/* Vortex English — editorial product system, 2026 */
:root {
  --v4-ink:#091427;
  --v4-muted:#5e718d;
  --v4-blue:#1468f3;
  --v4-blue-strong:#0758db;
  --v4-blue-soft:rgba(20, 104, 243, 0.08);
  --v4-coral:#ff654f;
  --v4-paper:#ffffff;
  --v4-canvas:#f8fafc;
  --v4-warm:#f8fafc;
  --v4-line:#e2e9f3;
  --v4-line-strong:#cdd9e8;
  --v4-night:#060d19;
  --v4-night-card:#0b1626;
  --v4-shadow:0 24px 70px rgba(12, 28, 56, .10);
  --v4-shadow-soft:0 12px 32px rgba(12, 28, 56, .06);
}

/* Shared product shell & Floating Island Header */
.premium-product-page,
.v4-public-page {
  background: var(--v4-canvas);
  color: var(--v4-ink);
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
}

/* Modern Floating Island Header */
.app-header,
.premium-product-page .app-header,
.v4-public-page .app-header {
  position: sticky;
  top: 14px;
  z-index: 100;
  width: min(1280px, calc(100% - 32px));
  min-height: 62px;
  margin: 14px auto 0;
  padding: 8px 14px 8px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-radius: 999px;
  border: 1px solid rgba(218, 228, 241, 0.9);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 32px -8px rgba(12, 28, 56, 0.08), 0 2px 6px -1px rgba(12, 28, 56, 0.03);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Brand Identity */
.app-brand,
.v4-public-page .app-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--v4-ink);
  font-family: 'Plus Jakarta Sans', 'DM Sans', sans-serif;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.025em;
  padding: 4px 6px;
  border-radius: 999px;
  transition: opacity 0.15s ease;
}
.app-brand:hover {
  opacity: 0.9;
}
.app-mark,
.premium-product-page .app-mark,
.v4-public-page .app-mark {
  height: 28px;
  width: auto;
  min-width: 38px;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
  border: none;
}
.app-mark img,
.app-mark svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.app-brand-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--v4-blue);
  background: rgba(20, 104, 243, 0.08);
  border: 1px solid rgba(20, 104, 243, 0.18);
  margin-left: 2px;
}

/* Navigation Links */
.app-nav,
.v4-public-page .app-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.app-nav a,
.v4-public-page .app-nav a {
  padding: 7px 14px;
  border-radius: 999px;
  color: #475569;
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.app-nav a:hover,
.v4-public-page .app-nav a:hover {
  color: var(--v4-ink);
  background: rgba(12, 28, 56, 0.05);
}
.app-nav a::after,
.v4-public-page .app-nav a::after {
  display: none !important;
  content: none !important;
}
.nav-badge {
  font-size: 9.5px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #1468f3, #4f46e5);
}

/* Right-side Actions & Theme Switch */
.app-actions,
.v4-public-page .app-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 0;
}
.app-header .theme-toggle,
.premium-product-page .theme-toggle,
.v4-public-page .theme-toggle {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(218, 228, 241, 0.9);
  border-radius: 50%;
  color: #475569;
  background: rgba(255, 255, 255, 0.8);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.app-header .theme-toggle:hover,
.premium-product-page .theme-toggle:hover,
.v4-public-page .theme-toggle:hover {
  border-color: #9bbef5;
  color: var(--v4-blue);
  background: #fff;
  transform: scale(1.06);
}
.app-header .theme-toggle .material-symbols-outlined {
  font-size: 18px;
}
.app-header .plain-link,
.v4-public-page .plain-link {
  padding: 7px 14px;
  border-radius: 999px;
  color: #475569;
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s ease;
}
.app-header .plain-link:hover,
.v4-public-page .plain-link:hover {
  color: var(--v4-ink);
  background: rgba(12, 28, 56, 0.05);
}
.app-header .button.primary,
.v4-public-page .button.primary {
  min-height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: linear-gradient(135deg, #1468f3, #2563eb);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 16px rgba(20, 104, 243, 0.32);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.app-header .button.primary:hover,
.v4-public-page .button.primary:hover {
  background: linear-gradient(135deg, #0758db, #1d4ed8);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(20, 104, 243, 0.42);
  filter: brightness(1.05);
}
.app-header .button.secondary {
  min-height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: #f1f5f9;
  color: var(--v4-ink);
  border: 1px solid rgba(218, 228, 241, 0.9);
}

.v4-shell { width:min(1320px,calc(100% - 64px)); margin-inline:auto; }
.v4-kicker { margin:0 0 14px; color:var(--v4-blue); font-size:11px; font-weight:800; letter-spacing:.14em; text-transform: uppercase; }

/* Hero Section */
.v4-hero { position: relative; padding:48px 0 68px; overflow: hidden; background: transparent; }
.v4-hero-glow { position: absolute; top: -100px; left: 50%; transform: translateX(-50%); width: 900px; height: 450px; border-radius: 50%; background: radial-gradient(ellipse at center, rgba(20, 104, 243, 0.08) 0%, rgba(241, 245, 249, 0.5) 50%, transparent 80%); filter: blur(50px); pointer-events: none; z-index: 0; }
.v4-hero-grid { position: relative; z-index: 1; display:grid; grid-template-columns:minmax(460px,.88fr) minmax(560px,1.12fr); align-items:center; gap:48px; min-height:540px; }

.v4-hero-badge { display:inline-flex; align-items:center; gap:8px; padding:5px 13px; border-radius:999px; font-size:11.5px; font-weight:750; letter-spacing:.02em; color:#1e40af; background:#eff6ff; border:1px solid #dbeafe; margin-bottom:18px; }
.v4-badge-pulse { width:7px; height:7px; border-radius:50%; background:#2563eb; box-shadow:0 0 0 0 rgba(37, 99, 235, 0.7); animation:v4-pulse 2.2s infinite; }
@keyframes v4-pulse { 0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7); } 70% { box-shadow: 0 0 0 7px rgba(37, 99, 235, 0); } 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); } }

.v4-hero-copy h1 { max-width:620px; margin:0; color:#0f172a; font-size:clamp(38px,3.5vw,50px); font-weight: 800; line-height:1.12; letter-spacing:-.035em; }
.v4-hero-gradient { color:var(--v4-blue); background:linear-gradient(135deg, #1468f3 20%, #3b82f6 90%); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.v4-hero-subtitle { max-width:540px; margin:18px 0 0; color:#475569; font-size:15.5px; line-height:1.65; font-weight: 450; }

.v4-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:26px; }
.v4-actions .button { min-height:48px; padding:0 22px; font-size:13.5px; font-weight:750; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius:10px; }
.v4-cta-primary { background:#1468f3; color:#fff; box-shadow:0 6px 18px rgba(20,104,243,.25); border:1px solid rgba(255,255,255,0.2); }
.v4-cta-primary:hover { background:#0d59db; transform:translateY(-1px); box-shadow:0 8px 22px rgba(20,104,243,.32); }
.v4-cta-primary .material-symbols-outlined { font-size: 18px; }
.v4-cta-secondary { background:#fff; color:#0f172a; border:1px solid #cbd5e1; box-shadow:0 2px 6px rgba(12,28,56,.04); }
.v4-cta-secondary:hover { border-color:#94a3b8; background:#f8fafc; transform:translateY(-1px); }
.v4-cta-secondary .material-symbols-outlined { font-size: 18px; color: #2563eb; }

.v4-trust-row { display:flex; align-items:center; flex-wrap:wrap; gap:22px; margin-top:30px; padding-top:20px; border-top:1px solid #e2e8f0; }
.v4-trust-item { display:inline-flex; align-items:center; gap:6px; color:#475569; font-size:12.5px; font-weight:600; }
.v4-trust-item strong { color:#0f172a; font-weight:800; }
.v4-trust-item .material-symbols-outlined { color:#2563eb; font-size:17px; }

/* Interactive Showcase */
.v4-hero-showcase { position:relative; width:100%; border-radius:12px; background:#fff; border:1px solid #cbd5e1; box-shadow:0 20px 45px -10px rgba(15,23,42,.12), 0 2px 8px rgba(0,0,0,.04); overflow:hidden; }
.v4-mock-browser { width:100%; display:flex; flex-direction:column; background:#fff; }
.v4-mock-topbar { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 14px; background:#0f172a; border-bottom:1px solid #1e293b; color:#fff; }
.v4-mock-dots { display:flex; gap:6px; }
.v4-mock-dots span { width:9px; height:9px; border-radius:50%; }
.v4-mock-dots span:nth-child(1) { background:#ff5f56; }
.v4-mock-dots span:nth-child(2) { background:#ffbd2e; }
.v4-mock-dots span:nth-child(3) { background:#27c93f; }
.v4-mock-tabs { display:flex; gap:4px; overflow-x:auto; }
.v4-mock-tab { display:inline-flex; align-items:center; gap:6px; padding:5px 12px; border:0; border-radius:6px; font-size:11px; font-weight:700; color:#94a3b8; background:transparent; cursor:pointer; transition:all 0.15s; }
.v4-mock-tab:hover { color:#fff; background:rgba(255,255,255,.08); }
.v4-mock-tab.active { color:#fff; background:#1e293b; box-shadow:0 2px 6px rgba(0,0,0,.2); }
.v4-mock-tab .material-symbols-outlined { font-size:14px; }
.v4-mock-badge { font-size:9px; font-weight:800; letter-spacing:.08em; color:#38bdf8; padding:3px 7px; border-radius:4px; background:rgba(56,189,248,.12); }

.v4-mock-body { display:none; padding:18px 20px; min-height:370px; position:relative; background:#fff; }
.v4-mock-body.active { display:block; }
.v4-mock-exam-header { display:flex; align-items:center; justify-content:space-between; padding-bottom:12px; border-bottom:1px solid #e2e8f0; margin-bottom:14px; }
.v4-mock-exam-title strong { display:block; font-size:13px; font-weight:800; color:#0f172a; }
.v4-mock-exam-title small { font-size:11px; color:#64748b; }
.v4-mock-timer { display:inline-flex; align-items:center; gap:6px; padding:4px 10px; border-radius:999px; background:#eff6ff; color:#2563eb; font-size:12px; font-weight:800; }
.v4-mock-timer .material-symbols-outlined { font-size:15px; }

.v4-mock-split-pane { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.v4-mock-passage-col { font-family:inherit; font-size:12px; line-height:1.65; color:#334155; padding:12px 14px; background:#f8fafc; border-radius:8px; border:1px solid #e2e8f0; }
.v4-mock-passage-col h4 { font-size:12.5px; font-weight:800; margin:0 0 8px; color:#0f172a; }
.v4-mock-passage-col p { margin:0 0 8px; }
.v4-mock-questions-col { display:flex; flex-direction:column; gap:8px; }
.v4-mock-q-card { padding:10px 12px; border:1px solid #e2e8f0; border-radius:8px; background:#fff; }
.v4-mock-q-num { display:inline-block; font-size:10px; font-weight:800; color:#2563eb; text-transform:uppercase; margin-bottom:4px; }
.v4-mock-q-card p { margin:0 0 8px; font-size:11px; line-height:1.45; color:#0f172a; font-weight:600; }
.v4-mock-options { display:flex; gap:6px; }
.v4-mock-opt { display:inline-flex; align-items:center; padding:3px 8px; border:1px solid #cbd5e1; border-radius:6px; font-size:10px; font-weight:700; color:#64748b; cursor:pointer; transition:all 0.15s; }
.v4-mock-opt input { display:none; }
.v4-mock-opt.active { border-color:#2563eb; background:#2563eb; color:#fff; }

.v4-mock-score-float { position:absolute; right:18px; bottom:14px; display:inline-flex; align-items:center; gap:10px; padding:8px 14px; border-radius:10px; background:rgba(15, 23, 42, 0.95); backdrop-filter:blur(10px); color:#fff; box-shadow:0 8px 24px rgba(0,0,0,.25); border:1px solid rgba(255,255,255,.15); }
.v4-mock-score-float .material-symbols-outlined { color:#10b981; font-size:22px; }
.v4-mock-score-float strong { display:block; font-size:12px; font-weight:800; }
.v4-mock-score-float small { display:block; font-size:10px; color:#93c5fd; }

/* Mock Listening */
.v4-mock-audio-pill { display:inline-flex; align-items:center; gap:6px; padding:4px 10px; border-radius:999px; background:#eff6ff; color:#2563eb; font-size:11px; font-weight:700; }
.v4-mock-audio-pill .material-symbols-outlined { font-size:15px; }
.v4-mock-audio-bar { display:flex; align-items:center; gap:12px; padding:12px 14px; border-radius:8px; background:#0f172a; color:#fff; margin-bottom:14px; }
.v4-mock-audio-bar .material-symbols-outlined { font-size:26px; color:#38bdf8; }
.v4-audio-waveform { display:flex; align-items:center; gap:3px; flex:1; height:24px; }
.v4-audio-waveform i { width:3px; height:12px; border-radius:2px; background:#38bdf8; opacity:.6; }
.v4-audio-waveform i:nth-child(odd) { height:18px; opacity:.9; }
.v4-audio-waveform i:nth-child(3n) { height:8px; }
.v4-mock-audio-bar span:last-child { font-size:11px; font-weight:700; color:#94a3b8; }
.v4-mock-form-q { padding:12px 14px; border:1px solid #e2e8f0; border-radius:8px; background:#f8fafc; }
.v4-mock-form-q h5 { margin:0 0 10px; font-size:12px; font-weight:800; color:#0f172a; }
.v4-mock-form-row { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:8px; font-size:11px; }
.v4-mock-form-row span { color:#64748b; }
.v4-mock-form-row input { height:28px; padding:0 8px; font-size:11px; font-weight:700; border-radius:5px; border:1px solid #cbd5e1; background:#fff; width:160px; color:#0f172a; }

/* Mock Analytics */
.v4-mock-analytics-head { display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }
.v4-mock-subkicker { font-size:9.5px; font-weight:800; letter-spacing:.08em; color:#2563eb; text-transform:uppercase; }
.v4-mock-analytics-head h4 { margin:4px 0 0; font-size:14px; font-weight:800; color:#0f172a; }
.v4-mock-delta-badge { display:inline-flex; padding:4px 9px; border-radius:6px; font-size:10px; font-weight:800; background:#dcfce7; color:#15803d; }
.v4-mock-stats-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:10px; margin-bottom:18px; }
.v4-mock-stat { padding:12px; border:1px solid #e2e8f0; border-radius:8px; background:#f8fafc; }
.v4-mock-stat span { display:block; font-size:10px; color:#64748b; font-weight:600; margin-bottom:4px; }
.v4-mock-stat strong { display:block; font-size:16px; font-weight:800; color:#0f172a; }
.v4-mock-stat small { display:block; font-size:9px; color:#2563eb; margin-top:2px; font-weight:700; }
.v4-mock-timeline-row { display:grid; grid-template-columns:repeat(4, 1fr); gap:8px; }
.v4-timeline-item { padding:8px; border:1px solid #e2e8f0; border-radius:6px; text-align:center; background:#fff; }
.v4-timeline-item span { display:block; font-size:9px; color:#64748b; }
.v4-timeline-item b { display:block; font-size:12px; font-weight:800; color:#0f172a; margin-top:2px; }
.v4-timeline-item.active { border-color:#2563eb; background:#eff6ff; }
.v4-timeline-item.active b { color:#2563eb; }

/* Bento Section */
.v4-bento-section { padding:84px 0 92px; background:#fff; border-top:1px solid var(--v4-line); }
.v4-section-head-centered { max-width:680px; margin:0 auto 48px; text-align:center; }
.v4-section-head-centered h2 { margin:0; font-size:clamp(32px,3.6vw,44px); font-weight:800; letter-spacing:-.045em; color:var(--v4-ink); }
.v4-section-head-centered p:not(.v4-kicker) { margin:14px 0 0; font-size:15px; line-height:1.6; color:var(--v4-muted); }
.v4-bento-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:16px; }
.v4-bento-card { display:flex; flex-direction:column; padding:32px 28px; border-radius:16px; border:1px solid var(--v4-line); background:#f8fafc; transition:all .2s ease; }
.v4-bento-card:hover { transform:translateY(-3px); border-color:#b3cbe8; box-shadow:0 16px 36px rgba(12,28,56,.07); }
.v4-bento-wide { grid-column:span 2; display:grid; grid-template-columns:1.15fr .85fr; gap:28px; align-items:center; }
.v4-bento-full { grid-column:1 / -1; }
.v4-bento-icon-box { width:44px; height:44px; display:grid; place-items:center; border-radius:11px; background:rgba(20,104,243,.1); color:var(--v4-blue); margin-bottom:18px; }
.v4-bento-icon-box .material-symbols-outlined { font-size:24px; }
.v4-bento-card h3 { margin:0 0 10px; font-size:20px; font-weight:800; letter-spacing:-.03em; color:var(--v4-ink); }
.v4-bento-card p { margin:0 0 16px; font-size:14px; line-height:1.55; color:var(--v4-muted); }
.v4-bento-list { list-style:none; padding:0; margin:16px 0 0; display:flex; flex-direction:column; gap:8px; font-size:13px; font-weight:600; color:#3b4d66; }
.v4-bento-list li { display:flex; align-items:center; gap:8px; }
.v4-bento-list .material-symbols-outlined { color:var(--v4-blue); font-size:16px; }
.v4-visual-pills-preview { display:flex; flex-wrap:wrap; gap:6px; padding:14px; border-radius:10px; background:#fff; border:1px solid var(--v4-line); margin-bottom:10px; }
.v4-pill-tag { width:28px; height:28px; display:grid; place-items:center; border-radius:6px; font-size:11px; font-weight:800; border:1px solid var(--v4-line); color:var(--v4-muted); background:#f8fafc; }
.v4-pill-tag.answered { background:#0c1c38; color:#fff; border-color:#0c1c38; }
.v4-pill-tag.current { border-color:var(--v4-blue); box-shadow:0 0 0 2px var(--v4-blue); }
.v4-visual-snippet { font-size:11.5px; line-height:1.5; color:var(--v4-muted); }
.v4-visual-snippet strong { color:var(--v4-ink); display:block; margin-bottom:2px; }

.v4-score-meter { margin-top:auto; padding:12px 14px; border-radius:8px; background:#fff; border:1px solid var(--v4-line); }
.v4-score-meter-bar { height:6px; border-radius:3px; background:linear-gradient(90deg, #10b981, #3b82f6); margin-bottom:8px; }
.v4-score-meter span { font-size:11px; font-weight:800; color:var(--v4-ink); }
.v4-stage-mini-tags { display:flex; flex-wrap:wrap; gap:6px; margin-top:auto; }
.v4-stage-mini-tags span { padding:4px 9px; border-radius:6px; font-size:10px; font-weight:800; background:#fff; border:1px solid var(--v4-line); color:var(--v4-blue); }

.v4-bento-split { display:flex; align-items:center; justify-content:space-between; gap:32px; width:100%; }
.v4-bento-actions .button { min-height:46px; padding:0 22px; font-size:13px; font-weight:800; white-space:nowrap; }

/* 3-Stage Path Section */
.v4-path-section { padding:88px 0; background:var(--v4-canvas); }
.v4-section-head { max-width:760px; }
.v4-section-head h2 { margin:0; color:var(--v4-ink); font-size:clamp(34px,3.8vw,48px); font-weight:800; line-height:1.06; letter-spacing:-.05em; }
.v4-section-head>p:last-child { margin:16px 0 0; color:var(--v4-muted); font-size:15px; line-height:1.62; }
.v4-path-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:42px; }
.v4-path-card { display:flex; flex-direction:column; padding:32px 28px; border:1px solid var(--v4-line); border-radius:16px; background:#fff; text-decoration:none; color:inherit; box-shadow:0 10px 28px rgba(28,54,91,.04); transition:.2s ease; }
.v4-path-card:hover { border-color:#9bbef5; transform:translateY(-4px); box-shadow:var(--v4-shadow-soft); }
.v4-path-card.featured { border-color:var(--v4-blue); background:linear-gradient(180deg, #f9fbff 0%, #ffffff 100%); box-shadow:0 12px 36px rgba(20,104,243,.08); }
.v4-path-badge { display:inline-block; font-size:10px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:var(--v4-blue); margin-bottom:16px; }
.v4-path-badge.featured { color:#fff; background:var(--v4-blue); padding:3px 8px; border-radius:5px; width:fit-content; }
.v4-path-card h3 { margin:0 0 10px; font-size:22px; font-weight:800; letter-spacing:-.035em; color:var(--v4-ink); }
.v4-path-card p { margin:0 0 18px; color:var(--v4-muted); font-size:13.5px; line-height:1.55; }
.v4-path-meta { display:flex; flex-direction:column; gap:6px; margin-bottom:22px; padding:12px 0; border-top:1px solid var(--v4-line); font-size:12px; font-weight:700; color:#43546f; }
.v4-path-meta span { display:inline-flex; align-items:center; gap:6px; }
.v4-path-meta .material-symbols-outlined { font-size:15px; color:var(--v4-blue); }
.v4-path-card em { margin-top:auto; color:var(--v4-blue); font-size:12.5px; font-style:normal; font-weight:800; }

/* Final CTA Section */
.v4-final-cta { padding:64px 0 74px; background:var(--v4-canvas); }
.v4-cta-box { display:flex; align-items:center; justify-content:space-between; gap:36px; padding:48px 52px; border-radius:20px; background:linear-gradient(135deg, #0a182d 0%, #11294c 100%); color:#fff; box-shadow:0 24px 60px rgba(8,20,38,.25); border:1px solid rgba(255,255,255,.12); }
.v4-cta-content .v4-kicker { color:#38bdf8; margin-bottom:8px; }
.v4-cta-content h2 { margin:0 0 10px; color:#fff; font-size:clamp(28px,3.2vw,38px); font-weight:800; letter-spacing:-.04em; }
.v4-cta-content p:not(.v4-kicker) { margin:0; color:#a9bcda; font-size:15px; line-height:1.6; max-width:560px; }
.v4-cta-button { background:#fff; color:var(--v4-blue); min-height:52px; padding:0 28px; font-size:14px; font-weight:800; border-radius:12px; box-shadow:0 10px 24px rgba(0,0,0,.2); display:inline-flex; align-items:center; gap:8px; }
.v4-cta-button:hover { background:#f0f6ff; transform:translateY(-2px); }

/* Footer */
.v4-footer { padding:56px 0 44px; border-top:1px solid var(--v4-line) !important; background:#fff !important; }
.v4-footer-inner { display:flex; justify-content:space-between; gap:48px; }
.v4-footer-brand { max-width:320px; }
.v4-footer-brand .app-brand { color:var(--v4-ink) !important; }
.v4-footer-brand p { margin:12px 0 0; font-size:13px; line-height:1.6; color:var(--v4-muted); }
.v4-footer-nav { display:flex; gap:52px; }
.v4-footer-nav div { display:flex; flex-direction:column; gap:10px; }
.v4-footer-nav strong { font-size:12px; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--v4-ink); margin-bottom:4px; }
.v4-footer-nav a { font-size:13px; color:var(--v4-muted) !important; text-decoration:none; transition:color 0.15s; }
.v4-footer-nav a:hover { color:var(--v4-blue) !important; }

/* Authenticated product navigation */
.member-layout { padding-left:236px; }
.member-sidebar { width:236px; padding:22px 14px 16px; color:#d0d8e5; border-right:1px solid #1b2b40; background:#0f172a; box-shadow:12px 0 38px rgba(5,16,32,.08); scrollbar-color:#293b54 transparent; }
.member-sidebar-top { padding:0 8px 20px; border-bottom:1px solid #202936; }
.member-sidebar-brand { gap:10px; color:#f5f7fa; font-size:12px; letter-spacing:-.015em; }
.member-sidebar-top .app-mark { width:34px; height:34px; border-radius:10px; box-shadow:none; }
.member-sidebar-nav { gap:4px; margin-top:22px; }
.member-nav-label { margin:18px 12px 6px; color:#617086; font-size:9px; font-weight:800; letter-spacing:.12em; text-transform:uppercase; }
.member-sidebar-nav a { min-height:44px; grid-template-columns:26px minmax(0,1fr); gap:10px; padding:0 12px; border:1px solid transparent; border-radius:9px; color:#9ba9bd; }
.member-sidebar-nav a strong { font-size:12px; font-weight:650; }
.member-sidebar-nav a>.material-symbols-outlined { color:#69778a; font-size:19px; }
.member-sidebar-nav a:hover { color:#f2f6fb; border-color:#1d3048; background:#0e1c2d; }
.member-sidebar-nav a[aria-current="page"] { color:#fff; border-color:#244d82; background:linear-gradient(90deg,#123765,#122743); box-shadow:inset 3px 0 0 #2b7cff,0 10px 26px rgba(1,9,22,.15); }
.member-sidebar-nav a[aria-current="page"]>.material-symbols-outlined { color:#4f91f7; font-variation-settings:'FILL' 0,'wght' 500; }
.member-sidebar-profile { grid-template-columns:34px minmax(0,1fr) 18px; margin-top:auto; padding:16px 8px 2px; color:inherit; border-top:1px solid #202936; }
.member-sidebar-profile:hover strong { color:#fff; }
.member-sidebar-profile strong { color:#eef2f7; font-size:11px; }
.member-sidebar-profile small { color:#738196; font-size:9px; }
.member-profile-arrow { color:#59677a; font-size:18px; }
.member-avatar { overflow:hidden; }
.member-avatar img { width:100%; height:100%; display:block; object-fit:cover; }

/* Materials Library */
.materials-shell { width:min(1180px,calc(100vw - 304px)); padding-top:20px; }
.library-header-compact { display:block; padding:0; border-bottom:none; margin-bottom:8px; }
.library-title { margin:0 0 6px; color:var(--v4-ink); font-size:clamp(24px,3vw,32px); line-height:1.15; letter-spacing:-.035em; font-weight:800; }
.library-subtitle { max-width:740px; margin:0; color:var(--v4-muted); font-size:14px; line-height:1.5; }

.materials-page .library-tabs,
.library-tabs {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 16px 0 14px;
  padding: 4px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  background: #f1f5f9;
  overflow-x: auto;
  scrollbar-width: none;
}
.materials-page .library-tabs::-webkit-scrollbar,
.library-tabs::-webkit-scrollbar {
  display: none;
}
.materials-page .library-tab,
.library-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 6px 14px;
  border: 0;
  border-radius: 8px;
  color: #64748b;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}
.materials-page .library-tab:hover,
.library-tab:hover {
  color: #0f172a;
  background: rgba(255, 255, 255, 0.5);
}
.materials-page .library-tab .tab-icon,
.library-tab .tab-icon {
  font-size: 16px;
  color: #64748b;
  transition: color 0.15s ease;
}
.materials-page .library-tab:hover .tab-icon,
.library-tab:hover .tab-icon {
  color: #0f172a;
}
.materials-page .library-tab[aria-pressed="true"],
.materials-page .library-tab[aria-selected="true"],
.library-tab[aria-pressed="true"],
.library-tab[aria-selected="true"] {
  color: #0f172a !important;
  background: #ffffff !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04) !important;
  font-weight: 600 !important;
}
.materials-page .library-tab[aria-pressed="true"] .tab-icon,
.library-tab[aria-pressed="true"] .tab-icon {
  color: #0f172a !important;
}

.materials-page .materials-toolbar,
.materials-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid #e2e8f0;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  margin-bottom: 14px;
}
.materials-page .search-field,
.search-field {
  flex: 1;
  min-width: 240px;
}
.materials-page .search-input-wrap,
.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.materials-page .search-icon,
.search-icon {
  position: absolute;
  left: 12px;
  color: #94a3b8;
  font-size: 18px;
  pointer-events: none;
}
.materials-page .search-input-wrap input,
.search-input-wrap input {
  width: 100%;
  min-height: 36px;
  padding: 0 34px 0 36px;
  border: 1px solid #e2e8f0;
  border-radius: 9px;
  font-size: 13px;
  color: #0f172a;
  background: #f8fafc;
  outline: 0;
  transition: all 0.15s ease;
}
.materials-page .search-input-wrap input:focus,
.search-input-wrap input:focus {
  background: #ffffff;
  border-color: #0f172a;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}
.materials-page .search-clear-btn,
.search-clear-btn {
  position: absolute;
  right: 8px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: #e2e8f0;
  color: #64748b;
  font-size: 14px;
  cursor: pointer;
}
.materials-page .search-clear-btn:hover,
.search-clear-btn:hover {
  background: #cbd5e1;
  color: #0f172a;
}

.materials-page .toolbar-controls-wrap,
.toolbar-controls-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.materials-page .skill-chips,
.materials-page .level-chips,
.skill-chips,
.level-chips {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: #f1f5f9;
  padding: 3px;
  border-radius: 9px;
  border: 1px solid #e2e8f0;
}
.materials-page .filter,
.filter {
  min-height: 28px;
  padding: 4px 11px;
  border-radius: 6px;
  border: 0 !important;
  background: transparent !important;
  font-size: 12px;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}
.materials-page .filter:hover,
.filter:hover {
  color: #0f172a;
  background: rgba(255, 255, 255, 0.4) !important;
}
.materials-page .filter[aria-pressed="true"],
.filter[aria-pressed="true"] {
  color: #0f172a !important;
  background: #ffffff !important;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08) !important;
  font-weight: 600 !important;
}

.materials-page .result-summary { display:flex; align-items:center; justify-content:space-between; gap:16px; margin:14px 2px 12px; }
.materials-page .result-count-wrap { display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.materials-page #resourceCount { color:var(--v4-muted); font-size:12px; font-weight:700; }
.materials-page .active-filter-tags { display:inline-flex; align-items:center; gap:6px; flex-wrap:wrap; }
.materials-page .active-filter-tag { display:inline-flex; align-items:center; gap:4px; padding:3px 8px; border-radius:6px; font-size:10px; font-weight:700; color:var(--v4-blue); background:rgba(20,104,243,.08); border:1px solid rgba(20,104,243,.18); }
.materials-page .active-filter-tag button { border:0; background:transparent; padding:0 2px; font-size:12px; font-weight:800; color:inherit; cursor:pointer; }
.materials-page .reset-filters-btn { border:0; background:none; padding:0; color:var(--v4-blue); font-size:11px; font-weight:800; cursor:pointer; text-decoration:none; }
.materials-page .reset-filters-btn:hover { text-decoration:underline; }

.materials-page .resource-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.materials-page .resource { position:relative; display:flex; min-height:280px; flex-direction:column; align-items:flex-start; padding:22px; border:1px solid var(--v4-line); border-radius:14px; background:#fff; box-shadow:0 4px 16px rgba(26,49,84,.03); transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.materials-page .resource:hover { transform:translateY(-2px); border-color:#bad2f3; box-shadow:var(--v4-shadow-soft); }
.materials-page .resource.is-completed { border-color:#a5deb6; background:linear-gradient(180deg,#f8fdfa 0%,#ffffff 100%); }
.materials-page .resource.is-locked { border-color:var(--v4-line); }

.materials-page .resource-completion { width:calc(100% + 44px); display:flex; align-items:center; gap:10px; margin:-22px -22px 14px; padding:9px 20px; color:#066946; background:rgba(32,164,113,.1); border-bottom:1px solid rgba(32,164,113,.2); }
.materials-page .resource-completion .material-symbols-outlined { flex:0 0 auto; color:#189c68; font-size:20px; }
.materials-page .completion-details strong { display:block; font-size:11px; font-weight:800; letter-spacing:.01em; }
.materials-page .completion-details small { display:block; margin-top:1px; color:#497a66; font-size:9px; font-weight:700; }

.materials-page .resource-badges { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:12px; }
.materials-page .resource-badge { padding:4px 8px; border-radius:6px; font-size:9px; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:#4f607a; background:#f0f4fa; }
.materials-page .resource-badge.primary { color:var(--v4-blue); background:rgba(20,104,243,.09); }
.materials-page .resource-badge.skill-reading { color:#0f58b6; background:#eaf2ff; }
.materials-page .resource-badge.skill-listening { color:#6a2fb4; background:#f3ecff; }
.materials-page .resource-badge.skill-writing { color:#b54e0c; background:#fff0e6; }
.materials-page .resource-badge.skill-speaking { color:#097e63; background:#e6f8f1; }
.materials-page .resource-badge.access-free { color:#0d6e45; background:#eaf8f0; border:1px solid #c4ebd6; }
.materials-page .resource-badge.access-premium { color:#6d4800; background:#fff7e2; border:1px solid #f6e3b2; }

.materials-page .resource-title { margin:0 0 8px; color:var(--v4-ink); font-size:18px; font-weight:800; line-height:1.25; letter-spacing:-.035em; }
.materials-page .resource-desc { margin:0 0 14px; color:var(--v4-muted); font-size:13px; line-height:1.52; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.materials-page .resource-facts { width:100%; display:flex; flex-wrap:wrap; gap:6px 14px; margin-top:auto; padding:10px 0 0; border-top:1px solid var(--v4-line); color:var(--v4-muted); font-size:11px; font-weight:700; }
.materials-page .resource-facts span { display:inline-flex; align-items:center; gap:5px; }
.materials-page .resource-facts .material-symbols-outlined { font-size:15px; color:var(--v4-blue); }

.materials-page .card-action-group { width:100%; display:flex; gap:8px; margin-top:12px; }
.materials-page .card-action-group .button { flex:1; min-height:38px; font-size:12px; padding:0 12px; }
.materials-page .resource .button { width:100%; min-height:38px; font-size:12px; margin-top:12px; }
.materials-page .resource-lock { display:inline-flex; align-items:center; justify-content:center; gap:6px; width:100%; min-height:38px; padding:0 14px; border:1px solid var(--v4-line-strong); border-radius:10px; color:#5b6d85; background:#f6f9fd; font-size:12px; font-weight:800; cursor:pointer; }
.materials-page .resource-lock:hover { border-color:var(--v4-blue); color:var(--v4-blue); background:#eff5ff; }
.materials-page .resource-lock .material-symbols-outlined { font-size:16px; color:#7e90a6; }

/* Skeleton loading & error states */
.materials-page .loading-state { grid-column:1 / -1; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.materials-page .loading-card { min-height:280px; padding:22px; border:1px solid var(--v4-line); border-radius:14px; background:#fff; overflow:hidden; }
.materials-page .loading-card span { display:block; height:12px; margin-bottom:12px; border-radius:6px; background:linear-gradient(90deg,#edf2f8 20%,#f7f9fc 50%,#edf2f8 80%); background-size:220% 100%; animation:library-shimmer 1.3s ease-in-out infinite; }
.materials-page .loading-card span:nth-child(1) { width:36%; height:18px; margin-bottom:18px; }
.materials-page .loading-card span:nth-child(2) { width:82%; height:22px; margin-bottom:16px; }
.materials-page .loading-card span:nth-child(3) { width:95%; }
.materials-page .loading-card span:nth-child(4) { width:65%; margin-top:auto; height:38px; border-radius:9px; }

.materials-page .library-empty, .materials-page .library-error { grid-column:1 / -1; display:grid; place-items:center; min-height:320px; padding:40px 24px; text-align:center; border:1px dashed var(--v4-line-strong); border-radius:16px; background:rgba(255,255,255,.75); }
.materials-page .library-empty-box { max-width:440px; display:flex; flex-direction:column; align-items:center; gap:8px; }
.materials-page .library-empty-icon { font-size:44px; color:var(--v4-muted); }
.materials-page .library-error-icon { font-size:44px; color:#c73b32; }
.materials-page .library-empty-box h2 { margin:0; color:var(--v4-ink); font-size:21px; font-weight:800; letter-spacing:-.035em; }
.materials-page .library-empty-box p { margin:0 0 10px; color:var(--v4-muted); font-size:13px; line-height:1.55; }

@keyframes library-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* Dashboard */
.product-dashboard { width:min(1180px,calc(100vw - 304px)); padding-top:22px; }
.product-dashboard .account-hero { margin-bottom:12px; padding:14px 16px; border-radius:13px; box-shadow:none; }
.account-status { display:inline-flex; align-items:center; gap:7px; margin-left:8px; padding:6px 9px; border:1px solid var(--v4-line); border-radius:7px; color:var(--v4-muted); font-size:9px; font-weight:800; text-transform:uppercase; }
.account-status i { width:6px; height:6px; border-radius:50%; background:#20a471; }
.product-dashboard .account-nav { width:max-content; min-width:430px; margin:0 0 24px; border-radius:11px; box-shadow:none; }
.product-dashboard .account-nav button { min-width:138px; }
.product-dashboard .dashboard-head-compact { margin-bottom:20px; }
.product-dashboard .dashboard-head-compact .page-title { max-width:680px; font-size:clamp(34px,4vw,44px); }
.dashboard-welcome { display:flex; align-items:center; gap:10px; margin-bottom:24px; }
.dashboard-welcome>.app-mark { width:38px; height:38px; flex:0 0 38px; border-radius:10px; box-shadow:none; }
.dashboard-welcome .account-name { font-size:14px; line-height:1.15; }
.dashboard-welcome .account-username { margin-top:3px; font-size:10px; }
.dashboard-welcome .account-status { margin-left:5px; }
.dashboard-signout { margin-left:auto; padding:7px 10px; border:1px solid var(--line); border-radius:9px; background:transparent; color:var(--muted); font:inherit; font-size:12px; font-weight:700; cursor:pointer; transition:border-color .2s ease,color .2s ease,background .2s ease; }
.dashboard-signout:hover { border-color:var(--blue); background:var(--blue-soft); color:var(--blue-dark); }
.product-dashboard .dashboard-stat-grid { gap:10px; }
.product-dashboard .dashboard-stat-grid .stat { min-height:118px; padding:18px; border-color:#d7e1ee; border-radius:13px; background:linear-gradient(180deg,#fff,#fbfdff); box-shadow:0 8px 24px rgba(24,50,87,.045); }
.product-dashboard .dashboard-stat-grid .stat::after { display:none; }
.product-dashboard .dashboard-stat-grid .stat span { color:var(--v4-muted); font-size:10px; }
.product-dashboard .dashboard-stat-grid .stat strong { font-size:27px; }
.dashboard-chart-grid { display:grid; grid-template-columns:minmax(0,1.45fr) minmax(300px,.55fr); gap:12px; margin:0 0 14px; }
.dashboard-chart-card { min-width:0; min-height:270px; padding:20px; border-radius:15px; box-shadow:none; }
.chart-card-head { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; }
.chart-card-head .page-kicker { margin-bottom:7px; }
.chart-card-head h2 { margin:0; color:var(--v4-ink); font-size:18px; letter-spacing:-.03em; }
.chart-insight { padding:6px 8px; border:1px solid var(--v4-line); border-radius:7px; color:var(--v4-muted); background:#f8fafc; font-size:9px; font-weight:800; white-space:nowrap; }
.chart-insight.positive { color:#087a52; border-color:#b9e2d2; background:#edf9f4; }
.chart-insight.negative { color:#b24747; border-color:#f0cccc; background:#fff4f4; }
.chart-frame { position:relative; min-height:190px; margin-top:10px; }
.chart-frame canvas { width:100%; height:190px; display:block; }
.chart-empty { position:absolute; inset:0; display:grid; place-items:center; margin:0; color:var(--v4-muted); font-size:11px; text-align:center; }
.outcome-visual { min-height:190px; display:flex; align-items:center; justify-content:center; gap:26px; padding-top:8px; }
.donut-frame { position:relative; width:150px; height:150px; flex:0 0 150px; }
.donut-frame canvas { width:150px; height:150px; display:block; }
.donut-value { position:absolute; inset:0; display:grid; place-content:center; text-align:center; pointer-events:none; }
.donut-value strong { color:var(--v4-ink); font-size:25px; line-height:1; letter-spacing:-.04em; }
.donut-value span { margin-top:4px; color:var(--v4-muted); font-size:9px; }
.outcome-legend { min-width:130px; display:grid; gap:11px; }
.outcome-legend>span { display:grid; grid-template-columns:8px minmax(0,1fr) auto; align-items:center; gap:7px; color:var(--v4-muted); font-size:10px; }
.outcome-legend i { width:8px; height:8px; border-radius:50%; }
.outcome-legend i.correct { background:#1f73ef; }
.outcome-legend i.incorrect { background:#d7dee8; }
.outcome-legend strong { color:var(--v4-ink); }
.outcome-legend small { color:var(--v4-muted); font-size:9px; line-height:1.45; }
.dashboard-priority-clean { grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr); }
.dashboard-priority-clean .compact-next,.focus-summary { min-height:220px; border-radius:15px; }
.dashboard-priority-clean .compact-next { background:#164f9e; }
.next-step-actions { display:flex; align-items:center; flex-wrap:wrap; gap:16px; }
.next-step-actions .text-link { color:#dbe9ff; }
.focus-summary { display:flex; flex-direction:column; padding:24px; }
.focus-summary h2 { margin:8px 0 0; font-size:22px; letter-spacing:-.035em; }
.focus-summary>p:not(.page-kicker) { margin:12px 0 20px; color:var(--v4-muted); font-size:12px; line-height:1.55; }
.focus-summary .text-link { width:max-content; margin-top:auto; padding:0; }
.focus-summary button.text-link { border:0; background:transparent; color:inherit; font:inherit; cursor:pointer; }
.google-security-notice { display:grid; grid-template-columns:42px minmax(0,1fr); gap:15px; align-items:start; padding:22px; }
.google-security-notice[hidden] { display:none; }
.google-security-notice>.material-symbols-outlined { display:grid; width:42px; height:42px; place-items:center; border-radius:11px; color:#1677e8; background:#edf5ff; }
.google-security-notice h2 { margin:1px 0 7px; color:var(--v4-ink); font-size:18px; }
.google-security-notice p { margin:0 0 12px; color:var(--v4-muted); font-size:12px; line-height:1.55; }
.product-dashboard .results-card,.product-dashboard .dashboard-library { border-radius:15px; box-shadow:none; }

/* 5-Column Stat Grid - Modern Glassmorphic Cards */
.account-stat-grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr) !important;
  gap: 16px;
  margin-bottom: 24px;
}
.stat {
  padding: 18px 20px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.04), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
  border-color: #cbd5e1;
}
.stat-overall-pred {
  border-color: rgba(37, 99, 235, 0.3) !important;
  background: linear-gradient(145deg, #ffffff 0%, #f0f7ff 100%) !important;
}
.premium-icon-wrap {
  background: rgba(37, 99, 235, 0.12) !important;
  color: #2563eb !important;
}

/* Question-Type Diagnostic Suite - World-Class Refinement */
.question-diagnostics-card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 20px !important;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  overflow: hidden;
}
.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.diagnostic-item {
  padding: 16px 18px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.2s ease;
}
.diagnostic-item:hover {
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 6px 18px -3px rgba(15, 23, 42, 0.06);
}
.diag-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.diag-label {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--v4-ink);
  line-height: 1.35;
}
.diag-pct {
  font-size: 14px;
  font-weight: 900;
  color: #2563eb;
  flex-shrink: 0;
}
.diag-track {
  height: 8px;
  border-radius: 999px;
  background: #e2e8f0;
  position: relative;
  overflow: visible;
  margin: 4px 0;
}
.diag-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.diag-fill.fill-warn {
  background: linear-gradient(90deg, #f59e0b, #ef4444);
}
.diag-fill.fill-good {
  background: linear-gradient(90deg, #10b981, #059669);
}
.diag-target-marker {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: #475569;
  border-radius: 2px;
  z-index: 2;
}
.diag-target-marker::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -2.5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #475569;
}
.diag-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 2px;
}
.diag-mistake-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  color: #64748b;
}
.diag-mistake-badge strong {
  color: var(--v4-ink);
  font-weight: 800;
}
.diag-status-tag {
  font-size: 10.5px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}
.diag-status-tag.tag-good {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}
.diag-status-tag.tag-mid {
  background: #fefce8;
  color: #854d0e;
  border: 1px solid #fef08a;
}
.diag-status-tag.tag-focus {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}
.diag-status-tag.tag-mastered {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

/* 4-Skill Matrix Modernization */
.skill-matrix-card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 20px !important;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.skill-matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.skill-matrix-item {
  padding: 20px 16px;
  border-radius: 16px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  transition: all 0.25s ease;
}
.skill-matrix-item:hover {
  background: #ffffff;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.06);
}

/* Dashboard Chart Cards & Heatmap */
.dashboard-chart-card {
  border-radius: 20px !important;
  border: 1px solid rgba(226, 232, 240, 0.9) !important;
  box-shadow: 0 10px 30px -4px rgba(15, 23, 42, 0.04) !important;
  background: #ffffff;
  padding: 24px;
}
.chart-insight {
  padding: 5px 10px;
  border: 1px solid var(--v4-line);
  border-radius: 8px;
  color: var(--v4-muted);
  background: #f8fafc;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}
.chart-insight.positive {
  color: #059669;
  border-color: #a7f3d0;
  background: #ecfdf5;
}
.chart-insight.negative {
  color: #dc2626;
  border-color: #fecaca;
  background: #fef2f2;
}

/* Locked Overlay for Free Students */
.diagnostics-locked-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 10;
}
.locked-card-box {
  max-width: 440px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.locked-card-box h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--v4-ink);
}
.locked-card-box p {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.5;
  color: #64748b;
}

@media (max-width: 1024px) {
  .account-stat-grid-5 {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .skill-matrix-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .diagnostic-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  .account-stat-grid-5 {
    grid-template-columns: 1fr !important;
  }
  .skill-matrix-grid {
    grid-template-columns: 1fr 1fr !important;
  }
  .diagnostic-grid {
    grid-template-columns: 1fr;
  }
}

/* Dark mode for skill matrix and activity */
html[data-theme="dark"] .skill-matrix-item {
  background: #0f172a !important;
  border-color: #1e293b !important;
}
html[data-theme="dark"] .diagnostic-item {
  background: #0f172a !important;
  border-color: #1e293b !important;
}
html[data-theme="dark"] .diag-track {
  background: #1e293b !important;
}
html[data-theme="dark"] .activity-bar-fill.empty-bar {
  background: #1e293b !important;
}

/* Skill Progress Navigation Bar */
.skill-progress-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.skill-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--v4-line);
  background: var(--v4-surface);
  color: var(--v4-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.skill-tab-btn:hover {
  color: var(--v4-ink);
  border-color: #cbd5e1;
}
.skill-tab-btn.active {
  background: var(--v4-blue);
  color: #ffffff;
  border-color: var(--v4-blue);
  box-shadow: 0 2px 8px rgba(20, 104, 243, 0.2);
}
html[data-theme="dark"] .skill-tab-btn {
  background: #0f172a;
  border-color: #1e293b;
  color: #94a3b8;
}
html[data-theme="dark"] .skill-tab-btn:hover {
  color: #f8fafc;
  border-color: #334155;
}
html[data-theme="dark"] .skill-tab-btn.active {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

/* Dark theme */
html[data-theme="dark"] .v4-public-page { color:#f4f7fb; background:var(--v4-night); }
html[data-theme="dark"] .v4-public-page .app-header { border-color:#1c2b42; color:#f4f7fb; background:rgba(6,13,25,.90); }
html[data-theme="dark"] .v4-public-page .app-brand,html[data-theme="dark"] .v4-public-page .plain-link { color:#f4f7fb; }
html[data-theme="dark"] .v4-public-page .app-nav a { color:#94a3b8; }
html[data-theme="dark"] .v4-public-page .app-nav a:hover { color:#38bdf8; }
html[data-theme="dark"] .v4-public-page .theme-toggle { color:#f4f7fb; border-color:#24354a; background:#0e1927; }
html[data-theme="dark"] .v4-hero { background:transparent; }
html[data-theme="dark"] .v4-hero-glow { background: radial-gradient(ellipse at center, rgba(20, 104, 243, 0.08) 0%, rgba(99, 102, 241, 0.03) 50%, transparent 80%); }
html[data-theme="dark"] .v4-hero-copy h1,html[data-theme="dark"] .v4-section-head h2 { color:#f4f7fb; }
html[data-theme="dark"] .v4-hero-copy>p:not(.v4-kicker),html[data-theme="dark"] .v4-section-head>p:last-child { color:#94a3b8; }
html[data-theme="dark"] .v4-public-page .v4-actions .button.secondary { color:#f4f7fb; border-color:#24354a; background:#0e1927; }
html[data-theme="dark"] .v4-hero-showcase { background:#0a1526; border-color:#1a2a40; box-shadow:0 24px 60px rgba(0,0,0,.5); }
html[data-theme="dark"] .v4-mock-body { background:#0a1526; }
html[data-theme="dark"] .v4-mock-exam-title strong { color:#f4f7fb; }
html[data-theme="dark"] .v4-mock-timer { background:#142744; color:#60a5fa; }
html[data-theme="dark"] .v4-mock-passage-col { background:#0d1a2d; border-color:#1e3049; color:#cbd5e1; }
html[data-theme="dark"] .v4-mock-passage-col h4 { color:#f4f7fb; }
html[data-theme="dark"] .v4-mock-q-card { background:#0d1a2d; border-color:#1e3049; }
html[data-theme="dark"] .v4-mock-q-card p { color:#f4f7fb; }
html[data-theme="dark"] .v4-mock-opt { background:#0a1526; border-color:#223752; color:#94a3b8; }
html[data-theme="dark"] .v4-mock-score-float { background:#061120; border-color:#1e3556; }
html[data-theme="dark"] .v4-mock-form-q { background:#0d1a2d; border-color:#1e3049; }
html[data-theme="dark"] .v4-mock-form-q h5 { color:#f4f7fb; }
html[data-theme="dark"] .v4-mock-form-row input { background:#0a1526; border-color:#223752; color:#f4f7fb; }
html[data-theme="dark"] .v4-mock-stat { background:#0d1a2d; border-color:#1e3049; }
html[data-theme="dark"] .v4-mock-stat strong { color:#f4f7fb; }
html[data-theme="dark"] .v4-timeline-item { background:#0d1a2d; border-color:#1e3049; }
html[data-theme="dark"] .v4-timeline-item b { color:#f4f7fb; }
html[data-theme="dark"] .v4-timeline-item.active { background:#132947; border-color:#2563eb; }
html[data-theme="dark"] .v4-bento-section { background:#070f1d; border-color:#1c2b42; }
html[data-theme="dark"] .v4-section-head-centered h2 { color:#f4f7fb; }
html[data-theme="dark"] .v4-bento-card { background:#0b1728; border-color:#1b2d45; }
html[data-theme="dark"] .v4-bento-card:hover { border-color:#274770; }
html[data-theme="dark"] .v4-bento-card h3 { color:#f4f7fb; }
html[data-theme="dark"] .v4-bento-list { color:#94a3b8; }
html[data-theme="dark"] .v4-visual-pills-preview { background:#07101e; border-color:#1b2d45; }
html[data-theme="dark"] .v4-pill-tag { background:#0c192c; border-color:#1f3554; color:#94a3b8; }
html[data-theme="dark"] .v4-pill-tag.answered { background:#e2e8f0; color:#07101e; border-color:#e2e8f0; }
html[data-theme="dark"] .v4-score-meter { background:#0d1a2d; border-color:#1e3049; }
html[data-theme="dark"] .v4-score-meter span { color:#f4f7fb; }
html[data-theme="dark"] .v4-stage-mini-tags span { background:#0d1a2d; border-color:#1e3049; color:#60a5fa; }
html[data-theme="dark"] .v4-path-section { background:#060c17; }
html[data-theme="dark"] .v4-path-card { background:#0a1526; border-color:#1a2a40; }
html[data-theme="dark"] .v4-path-card.featured { background:linear-gradient(180deg, #0f2038 0%, #0a1526 100%); border-color:#2563eb; }
html[data-theme="dark"] .v4-path-card h3 { color:#f4f7fb; }
html[data-theme="dark"] .v4-path-meta { border-color:#1a2a40; color:#94a3b8; }
html[data-theme="dark"] .v4-footer { color:#99a9bf !important; border-color:#1a2a40 !important; background:#060c17 !important; }
html[data-theme="dark"] .v4-footer-brand .app-brand { color:#f4f7fb !important; }
html[data-theme="dark"] .v4-footer-nav strong { color:#f4f7fb; }
html[data-theme="dark"] .v4-footer-nav a { color:#94a3b8 !important; }
html[data-theme="dark"] .v4-footer-nav a:hover { color:#38bdf8 !important; }
html[data-theme="dark"] .library-heading { border-color:#26364b; }
html[data-theme="dark"] .library-heading h1 { color:#f4f7fb; }
html[data-theme="dark"] .library-heading p:not(.page-kicker) { color:#a4b2c5; }
html[data-theme="dark"] .library-header-compact { border-color:#24354a; }
html[data-theme="dark"] .library-title { color:#f4f7fb; }
html[data-theme="dark"] .library-subtitle { color:#9bb0ca; }
html[data-theme="dark"] .materials-page .library-tabs { background:#0c1624; border-color:#1b2a3c; }
html[data-theme="dark"] .materials-page .library-tab { color:#8e9eaf; }
html[data-theme="dark"] .materials-page .library-tab:hover { color:#f4f7fb; background:#132235; }
html[data-theme="dark"] .materials-page .materials-toolbar { background:#0c1624; border-color:#1b2a3c; }
html[data-theme="dark"] .materials-page .search-input-wrap input { background:#070e17; border-color:#24354a; color:#f4f7fb; }
html[data-theme="dark"] .materials-page .search-clear-btn { background:#1b2a3c; color:#9bb0ca; }
html[data-theme="dark"] .materials-page .search-clear-btn:hover { background:#263c54; color:#fff; }
html[data-theme="dark"] .materials-page .filter { background:#070e17; border-color:#24354a; color:#a9b8cc; }
html[data-theme="dark"] .materials-page .filter:hover { border-color:#3b577a; color:#f4f7fb; }
html[data-theme="dark"] .materials-page .resource { background:#0e1927; border-color:#1b2a3d; color:#f4f7fb; }
html[data-theme="dark"] .materials-page .resource:hover { border-color:#28466e; }
html[data-theme="dark"] .materials-page .resource.is-completed { border-color:#1c523c; background:linear-gradient(180deg,#0d2119 0%,#0e1927 100%); }
html[data-theme="dark"] .materials-page .resource-completion { background:rgba(30,163,111,.14); border-color:rgba(30,163,111,.25); color:#7ce0b8; }
html[data-theme="dark"] .materials-page .completion-details small { color:#8cbfa8; }
html[data-theme="dark"] .materials-page .resource-title { color:#f4f7fb; }
html[data-theme="dark"] .materials-page .resource-desc { color:#9bb0ca; }
html[data-theme="dark"] .materials-page .resource-facts { border-color:#1b2a3d; color:#8e9ea7; }
html[data-theme="dark"] .materials-page .resource-badge { background:#162436; color:#a5b4c7; }
html[data-theme="dark"] .materials-page .resource-badge.access-free { background:#0f2b1e; color:#6ee7b7; border-color:#1b4d36; }
html[data-theme="dark"] .materials-page .resource-badge.access-premium { background:#2b200b; color:#fcd34d; border-color:#4d3810; }
html[data-theme="dark"] .materials-page .resource-lock { background:#101c2c; border-color:#24354a; color:#9ab0ca; }
html[data-theme="dark"] .materials-page .resource-lock:hover { background:#162942; border-color:var(--v4-blue); color:#fff; }
html[data-theme="dark"] .materials-page .loading-card { background:#0e1927; border-color:#1b2a3d; }
html[data-theme="dark"] .materials-page .loading-card span { background:linear-gradient(90deg,#162334 25%,#1e2f45 50%,#162334 75%); }
html[data-theme="dark"] .materials-page .library-empty, html[data-theme="dark"] .materials-page .library-error { background:rgba(14,25,39,.7); border-color:#24354a; }
html[data-theme="dark"] .materials-page .library-empty-box h2 { color:#f4f7fb; }

html[data-theme="dark"] .account-status { border-color:#2b3d54; color:#a9b7ca; }
html[data-theme="dark"] .chart-card-head h2,html[data-theme="dark"] .donut-value strong,html[data-theme="dark"] .outcome-legend strong { color:#f4f7fb; }
html[data-theme="dark"] .chart-insight { color:#a4b2c5; border-color:#2b3d54; background:#111c2b; }
html[data-theme="dark"] .chart-insight.positive { color:#8be0bd; border-color:#285844; background:#10291f; }
html[data-theme="dark"] .chart-insight.negative { color:#ffb0b0; border-color:#633c43; background:#2c171d; }
html[data-theme="dark"] .outcome-legend i.incorrect { background:#344258; }
html[data-theme="dark"] .google-security-notice h2 { color:#f4f7fb; }
html[data-theme="dark"] .google-security-notice>.material-symbols-outlined { color:#7bb0ff; background:#142744; }

@media (max-width:1200px) {
  .member-layout { padding-left:0; }
  .member-layout .page { width:min(100% - 40px,1180px); }
  .v4-shell { width:min(100% - 48px,1120px); }
  .v4-hero-grid { grid-template-columns:1fr 1.05fr; gap:36px; }
  .v4-hero-copy h1 { font-size:46px; }
}

@media (max-width:1000px) {
  .v4-hero-grid { grid-template-columns:1fr; }
  .v4-hero { padding-top:40px; }
  .v4-hero-copy { max-width:760px; }
  .v4-bento-grid { grid-template-columns:1fr 1fr; }
  .v4-bento-wide { grid-column:1 / -1; }
  .v4-footer-inner { flex-direction:column; gap:32px; }
}

@media (max-width:830px) {
  html, body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
    width: 100% !important;
  }

  .v4-public-page .app-header,
  .app-header {
    width: 100% !important;
    max-width: 100vw !important;
    margin: 0 !important;
    padding: 10px 16px !important;
    border-radius: 0 !important;
    position: sticky !important;
    top: 0 !important;
    box-sizing: border-box !important;
    border-left: none !important;
    border-right: none !important;
    border-top: none !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 8px !important;
  }

  .v4-public-page .app-brand,
  .app-brand {
    padding: 0 !important;
    font-size: 13.5px !important;
    flex-shrink: 0 !important;
  }

  .v4-public-page .theme-toggle,
  .app-header .theme-toggle {
    margin-left: auto !important;
    order: 2 !important;
    width: 36px !important;
    height: 36px !important;
    flex-shrink: 0 !important;
  }

  .v4-public-page .mobile-nav-toggle,
  .mobile-nav-toggle {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    order: 3 !important;
    min-width: 36px !important;
    height: 36px !important;
    padding: 0 10px !important;
    border-radius: 8px !important;
    border: 1px solid rgba(218, 228, 241, 0.9) !important;
    background: rgba(255, 255, 255, 0.8) !important;
    color: var(--v4-ink) !important;
    font-size: 12px !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    flex-shrink: 0 !important;
  }

  /* Hide Desktop Nav & Desktop Actions from Header row on Mobile */
  .v4-public-page .app-nav,
  .app-nav {
    display: none !important;
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid #e2e8f0 !important;
    box-shadow: 0 16px 36px rgba(12, 28, 56, 0.12) !important;
    padding: 16px 20px 20px !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
    box-sizing: border-box !important;
    z-index: 99 !important;
  }

  .v4-public-page .app-nav.open,
  .app-nav.open {
    display: flex !important;
    animation: mobileNavSlideDown 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
  }

  .v4-public-page .app-nav a,
  .app-nav a {
    padding: 10px 14px !important;
    border-radius: 10px !important;
    font-size: 14px !important;
    font-weight: 700 !important;
    color: #1e293b !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    background: #f8fafc !important;
    border: 1px solid #e2e8f0 !important;
    text-decoration: none !important;
  }

  .v4-public-page .app-nav a:hover,
  .app-nav a:hover {
    background: #eff6ff !important;
    color: #1468f3 !important;
    border-color: #bfdbfe !important;
  }

  .v4-public-page .app-actions,
  .app-actions {
    display: none !important;
  }

  /* Clean mobile hero section */
  .v4-hero {
    padding: 24px 0 40px !important;
    overflow: hidden !important;
    width: 100% !important;
    max-width: 100vw !important;
    box-sizing: border-box !important;
  }

  .v4-shell {
    width: 100% !important;
    max-width: 100vw !important;
    padding: 0 16px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
  }

  .v4-hero-grid {
    grid-template-columns: 1fr !important;
    min-height: auto !important;
    gap: 28px !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .v4-hero-copy {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .v4-hero-copy h1 {
    font-size: clamp(28px, 8vw, 38px) !important;
    line-height: 1.15 !important;
    word-break: break-word !important;
  }

  .v4-hero-subtitle {
    font-size: 14.5px !important;
    line-height: 1.6 !important;
    margin-top: 14px !important;
  }

  .v4-actions {
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
  }

  .v4-actions .button {
    width: 100% !important;
    box-sizing: border-box !important;
    justify-content: center !important;
  }

  .v4-mock-split-pane { grid-template-columns:1fr; }
  .v4-bento-grid { grid-template-columns:1fr; }
  .v4-bento-wide { grid-column:1 / -1; }
  .v4-bento-split { flex-direction:column; align-items:flex-start; }
  .v4-path-grid { grid-template-columns:1fr; }
  .v4-cta-box { flex-direction:column; align-items:flex-start; padding:32px 24px; }
  .v4-footer-nav { flex-wrap:wrap; gap:28px; }
  .materials-shell,.product-dashboard { width:min(100% - 28px,760px); }
  .library-heading { align-items:flex-start; flex-direction:column; gap:18px; }
  .library-heading .button { width:100%; }
  .materials-page .resource-list { grid-template-columns:1fr; }
  .materials-page .loading-state { grid-template-columns:1fr; }

  /* Mobile Authentication Layout */
  .auth-page .page {
    padding: 16px 12px 36px !important;
    width: 100% !important;
    max-width: 100vw !important;
  }

  .auth-layout {
    grid-template-columns: 1fr !important;
    border-radius: 18px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-shadow: 0 4px 16px rgba(18, 38, 76, 0.07) !important;
  }

  .auth-aside {
    display: none !important;
  }

  .auth-panel {
    padding: 24px 18px 28px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .auth-panel-inner {
    width: 100% !important;
    max-width: 100% !important;
  }

  .auth-title {
    font-size: 24px !important;
    letter-spacing: -0.03em !important;
  }

  .auth-role-selector {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }
}

@keyframes mobileNavSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width:560px) {
  .v4-hero { padding:36px 0 48px; }
  .v4-hero-copy h1 { font-size:32px; }
  .v4-hero-subtitle { font-size:14.5px; }
  .v4-actions { flex-direction:column; }
  .v4-actions .button { width:100%; }
  .v4-trust-row { gap:12px; }
  .v4-mock-body { padding:14px; min-height:auto; }
  .v4-mock-score-float { position:static; margin-top:14px; width:100%; justify-content:center; }
  .v4-mock-stats-grid { grid-template-columns:1fr; }
  .v4-mock-timeline-row { grid-template-columns:repeat(2, 1fr); }
  .v4-bento-section,.v4-path-section,.v4-final-cta { padding:52px 0; }
  .v4-section-head-centered h2,.v4-section-head h2 { font-size:28px; }
  .v4-cta-box h2 { font-size:24px; }
  .v4-cta-actions { width:100%; }
  .v4-cta-button { width:100%; justify-content:center; }
  .materials-page .materials-toolbar { grid-template-columns:1fr; gap:12px; padding:12px; }
  .materials-page .search-field { grid-column:auto; }
  .materials-page .filter-row { gap:4px; }
  .materials-page .filter { min-height:32px; padding:0 9px; font-size:10px; }
  .materials-page .card-action-group { flex-direction:column; }
  .product-dashboard .dashboard-stat-grid { grid-template-columns:1fr; }
  .product-dashboard .account-nav { width:100%; min-width:0; overflow-x:auto; scrollbar-width:none; }
  .product-dashboard .account-nav::-webkit-scrollbar { display:none; }
  .product-dashboard .account-nav button { min-width:112px; white-space:nowrap; }
  .dashboard-welcome { flex-wrap:wrap; }
  .dashboard-signout { margin-left:0; }
  .product-dashboard .dashboard-stat-grid .stat {
    min-height:auto;
    display:grid;
    grid-template-columns:1fr auto;
    align-items:end;
    gap:6px 14px;
  }
  .product-dashboard .dashboard-stat-grid .stat span:first-child { grid-column:1 / -1; }
  .product-dashboard .dashboard-stat-grid .stat strong { line-height:1; }
  .dashboard-chart-card { min-height:250px; padding:17px; }
  .chart-card-head { align-items:flex-start; flex-direction:column; gap:10px; }
  .outcome-visual { justify-content:flex-start; gap:18px; }
  .donut-frame,.donut-frame canvas { width:120px; height:120px; }
  .donut-frame { flex-basis:120px; }
  .account-status { order:4; margin:0; }
}

/* Guided start dialog ----------------------------------------------------- */
.onboarding {
  width:min(780px,calc(100% - 32px));
  max-height:calc(100dvh - 40px);
  margin:auto;
  padding:0;
  overflow:auto;
  color:var(--v4-ink);
  border:1px solid var(--v4-line);
  border-radius:24px;
  background:var(--v4-paper);
  box-shadow:0 34px 100px rgba(5,18,40,.28);
  font-family:"DM Sans",system-ui,-apple-system,sans-serif;
}

.onboarding::backdrop {
  background:rgba(6,15,28,.62);
  backdrop-filter:blur(8px);
}

.onboarding-top {
  min-height:78px;
  display:flex;
  align-items:center;
  gap:11px;
  padding:18px 24px;
  border-bottom:1px solid var(--v4-line);
}

.onboarding-top>.app-mark {
  width:38px;
  height:38px;
  flex:0 0 38px;
  border-radius:11px;
}

.onboarding-top>span:not(.app-mark) {
  color:var(--v4-ink);
  font-size:13px;
  font-weight:800;
  letter-spacing:-.025em;
}

.onboarding-skip {
  min-height:38px;
  margin-left:auto;
  padding:0 13px;
  color:var(--v4-muted);
  border:1px solid transparent;
  border-radius:9px;
  background:transparent;
  font:700 12px/1 "DM Sans",sans-serif;
  transition:border-color .16s ease,background .16s ease,color .16s ease;
}

.onboarding-skip:hover {
  color:var(--v4-ink);
  border-color:var(--v4-line);
  background:var(--v4-canvas);
}

.onboarding-step {
  display:none;
  padding:36px 38px 30px;
}

.onboarding-step.active {
  display:block;
  animation:onboarding-enter .2s ease-out;
}

@keyframes onboarding-enter {
  from { opacity:0; transform:translateY(6px); }
  to { opacity:1; transform:none; }
}

.onboarding-step .eyebrow {
  margin:0 0 11px;
  color:#ff6f61;
  font-size:10px;
  font-weight:800;
  letter-spacing:.12em;
}

.onboarding-step h2 {
  margin:0;
  color:var(--v4-ink);
  font-size:clamp(30px,4vw,40px);
  line-height:1.06;
  letter-spacing:-.055em;
}

.onboarding-step>p:not(.eyebrow) {
  margin:13px 0 0;
  color:var(--v4-muted);
  font-size:14px;
  line-height:1.55;
}

.onboarding-choices {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
  margin-top:28px;
}

.onboarding-choices button {
  min-width:0;
  min-height:132px;
  display:flex;
  align-items:flex-start;
  flex-direction:column;
  gap:9px;
  padding:19px;
  color:var(--v4-ink);
  border:1px solid var(--v4-line);
  border-radius:15px;
  background:var(--v4-paper);
  text-align:left;
  transition:transform .16s ease,border-color .16s ease,background .16s ease,box-shadow .16s ease;
}

.onboarding-choices button:hover {
  transform:translateY(-2px);
  border-color:#9bbcf0;
  box-shadow:0 12px 26px rgba(18,54,107,.08);
}

.onboarding-choices button.selected {
  border-color:var(--v4-blue);
  background:var(--v4-blue-soft);
  box-shadow:0 0 0 2px rgba(31,111,235,.12);
}

.onboarding-choices b {
  display:block;
  font-size:15px;
  line-height:1.22;
  letter-spacing:-.025em;
}

.onboarding-choices span {
  display:block;
  color:var(--v4-muted);
  font-size:12px;
  line-height:1.5;
}

.onboarding-footer {
  min-height:82px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:16px 24px;
  border-top:1px solid var(--v4-line);
  background:var(--v4-canvas);
}

.onboarding-progress {
  display:flex;
  flex:1;
  gap:7px;
}

.onboarding-progress i {
  width:42px;
  height:4px;
  border-radius:999px;
  background:#d9e2ee;
  transition:background .18s ease;
}

.onboarding-progress i.active {
  background:var(--v4-blue);
}

.onboarding-next {
  min-width:150px;
}

.onboarding-next span {
  font-size:15px;
}

html[data-theme="dark"] .onboarding {
  color:#f4f7fb;
  border-color:#26374d;
  background:#0e1927;
}

html[data-theme="dark"] .onboarding-top,
html[data-theme="dark"] .onboarding-footer {
  border-color:#26374d;
}

html[data-theme="dark"] .onboarding-footer {
  background:#0a1421;
}

html[data-theme="dark"] .onboarding-top>span:not(.app-mark),
html[data-theme="dark"] .onboarding-step h2,
html[data-theme="dark"] .onboarding-choices button {
  color:#f4f7fb;
}

html[data-theme="dark"] .onboarding-choices button {
  border-color:#26374d;
  background:#101c2b;
}

html[data-theme="dark"] .onboarding-choices button:hover {
  border-color:#42648d;
}

html[data-theme="dark"] .onboarding-choices button.selected {
  border-color:#4c8eff;
  background:#132a49;
}

html[data-theme="dark"] .onboarding-step>p:not(.eyebrow),
html[data-theme="dark"] .onboarding-choices span {
  color:#9eacc0;
}

@media (max-width:680px) {
  .onboarding {
    width:calc(100% - 20px);
    max-height:calc(100dvh - 20px);
    border-radius:20px;
  }

  .onboarding-top {
    min-height:66px;
    padding:14px 16px;
  }

  .onboarding-step {
    padding:27px 18px 24px;
  }

  .onboarding-step h2 {
    font-size:31px;
  }

  .onboarding-choices {
    grid-template-columns:1fr;
    gap:8px;
    margin-top:22px;
  }

  .onboarding-choices button {
    min-height:88px;
    justify-content:center;
    padding:15px 16px;
  }

  .onboarding-footer {
    min-height:74px;
    padding:12px 16px;
  }

  .onboarding-progress i {
    width:28px;
  }

  .onboarding-next {
    min-width:132px;
  }
}

/* ==========================================================================
   Authentication Pages (Login & Signup)
   ========================================================================== */
.auth-page .page {
  width: min(1040px, calc(100% - 48px));
  padding-block: 48px 64px;
}
.auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 36px;
  align-items: stretch;
  background: transparent;
  box-shadow: none;
  border: none;
}
.auth-page[data-auth-mode="signup"] .auth-layout {
  grid-template-columns: minmax(360px, 0.9fr) minmax(0, 1fr);
}
.auth-panel {
  display: flex;
  flex-direction: column;
  padding: 40px;
  border-radius: 20px;
  border: 1px solid var(--v4-line);
  background: #fff;
  box-shadow: 0 16px 48px rgba(12, 28, 56, 0.06);
}
.auth-panel-inner {
  max-width: 100%;
}
.auth-title {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--v4-ink);
}
.auth-aside {
  display: flex;
  flex-direction: column;
  padding: 40px;
  border-radius: 20px;
  background: linear-gradient(145deg, #09172c, #0e223f);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 20px 50px rgba(7, 18, 36, 0.22);
}
.auth-aside-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #e2edfb;
}
.auth-aside-badge .app-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--v4-blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
}
.auth-aside h2 {
  margin: 0 0 14px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: #fff;
}
.auth-aside > p {
  margin: 0 0 32px;
  font-size: 14px;
  line-height: 1.6;
  color: #a4b7d2;
}
.auth-benefits-list {
  list-style: none;
  padding: 0;
  margin: auto 0 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.auth-benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.auth-benefits-list .material-symbols-outlined {
  color: #38bdf8;
  font-size: 22px;
  margin-top: 2px;
  flex-shrink: 0;
}
.auth-benefits-list strong {
  display: block;
  font-size: 13.5px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2px;
}
.auth-benefits-list small {
  display: block;
  font-size: 12px;
  color: #8da4c4;
  line-height: 1.45;
}
.google-auth-button {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 20px;
  border-radius: 11px;
  border: 1px solid var(--v4-line);
  background: #fff;
  color: var(--v4-ink);
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  margin: 22px 0 16px;
  transition: all 0.2s ease;
}
.google-auth-button:hover {
  border-color: #abbfd6;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(12, 28, 56, 0.06);
}
.google-auth-button img {
  width: 18px;
  height: 18px;
}
.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 16px 0 22px;
  color: var(--v4-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--v4-line);
}
.auth-divider span {
  padding: 0 12px;
}
.auth-panel .form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.auth-panel .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--v4-ink);
}
.auth-panel .field small {
  font-size: 11px;
  font-weight: 500;
  color: var(--v4-muted);
}
.auth-panel .field input {
  min-height: 46px;
  padding: 0 14px;
  border-radius: 9px;
  border: 1px solid var(--v4-line);
  background: #fbfcfe;
  color: var(--v4-ink);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.15s ease;
}
.auth-panel .field input:focus {
  border-color: var(--v4-blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(20, 104, 243, 0.15);
  outline: none;
}
.auth-panel .password-wrap {
  position: relative;
  display: flex;
}
.auth-panel .password-wrap input {
  width: 100%;
  padding-right: 64px;
}
.auth-panel .password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  height: 32px;
  padding: 0 10px;
  border: none;
  background: transparent;
  color: var(--v4-muted);
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  border-radius: 6px;
}
.auth-panel .password-toggle:hover {
  color: var(--v4-ink);
  background: rgba(12, 28, 56, 0.05);
}
.auth-panel button[type="submit"] {
  min-height: 50px;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.auth-panel .consent {
  margin: 10px 0 0;
  font-size: 11px;
  color: var(--v4-muted);
  text-align: center;
}

/* ==========================================================================
   Courses Page
   ========================================================================== */
.courses-page .course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.courses-page .course-card {
  display: flex;
  flex-direction: column;
  padding: 34px 28px;
  border-radius: 18px;
  border: 1px solid var(--v4-line);
  background: #fff;
  box-shadow: 0 10px 30px rgba(12, 28, 56, 0.04);
  transition: all 0.2s ease;
}
.courses-page .course-card:hover {
  transform: translateY(-4px);
  border-color: #b0ccf2;
  box-shadow: var(--v4-shadow-soft);
}
.courses-page .course-card.ielts-card {
  border-color: var(--v4-blue);
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
  box-shadow: 0 14px 40px rgba(20, 104, 243, 0.08);
}
.courses-page .course-code {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--v4-blue);
  margin-bottom: 16px;
}
.courses-page .course-code.featured {
  color: #fff;
  background: var(--v4-blue);
  padding: 4px 9px;
  border-radius: 6px;
  width: fit-content;
}
.courses-page .course-card h2 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--v4-ink);
}
.courses-page .course-card p {
  margin: 0 0 20px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--v4-muted);
}
.courses-page .course-features {
  list-style: none;
  padding: 0;
  margin: 0 0 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--v4-line);
  padding-top: 18px;
}
.courses-page .course-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 650;
  color: #3b4d66;
}
.courses-page .course-features .material-symbols-outlined {
  color: var(--v4-blue);
  font-size: 16px;
  flex-shrink: 0;
}
.courses-page .course-card .button {
  margin-top: auto;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: 800;
  font-size: 13px;
}
.courses-page .course-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 48px;
  padding: 38px 42px;
  border-radius: 18px;
  background: linear-gradient(135deg, #09172c, #0e223f);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 20px 50px rgba(7, 18, 36, 0.22);
}
.courses-page .course-next .page-kicker {
  color: #38bdf8;
  margin-bottom: 6px;
}
.courses-page .course-next h2 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: #fff;
}
.courses-page .course-next p:not(.page-kicker) {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: #9eb2cf;
  max-width: 540px;
}
.courses-page .course-next .button.secondary {
  background: #fff;
  color: var(--v4-ink);
  min-height: 48px;
  padding: 0 24px;
  font-weight: 800;
  white-space: nowrap;
}

/* ==========================================================================
   Modern Practice Page & Skill Hub Design
   ========================================================================== */
.practice-shell {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 24px;
  padding-bottom: 64px;
}

.practice-page-heading {
  margin-bottom: 24px;
}

.practice-toolbar-unified {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 14px 20px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(12, 28, 56, 0.03);
  margin-bottom: 24px;
}

.practice-toolbar-col {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.practice-filter-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b;
}
.practice-filter-title .material-symbols-outlined {
  font-size: 17px;
  color: #1468f3;
}

.practice-toolbar-unified .stage-chips,
.practice-toolbar-unified .skill-chips {
  display: flex;
  gap: 3px;
  background: #f8fafc;
  padding: 3px;
  border-radius: 9px;
  border: 1px solid #e2e8f0;
}

.practice-page .filter {
  min-height: 32px;
  padding: 0 12px;
  border-radius: 7px;
  border: 0;
  background: transparent;
  font-size: 12px;
  font-weight: 700;
  color: #64748b;
  cursor: pointer;
  transition: all 0.15s ease;
}
.practice-page .filter:hover {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.04);
}
.practice-page .filter[aria-pressed="true"] {
  color: #1468f3;
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  font-weight: 800;
}

.practice-page .practice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.practice-page .skill-card {
  display: flex;
  flex-direction: column;
  padding: 26px 28px;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(12, 28, 56, 0.04);
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}
.practice-page .skill-card:hover {
  transform: translateY(-3px);
  border-color: #93c5fd;
  box-shadow: 0 14px 36px rgba(20, 104, 243, 0.08);
}

.skill-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  width: 100%;
}

.practice-page .skill-icon-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #1468f3;
  background: #eff6ff;
  width: fit-content;
}
.practice-page .skill-icon-pill .material-symbols-outlined {
  font-size: 15px;
}
.practice-page .skill-card-listening .skill-icon-pill { color: #0284c7; background: #e0f2fe; }
.practice-page .skill-card-writing .skill-icon-pill { color: #059669; background: #ecfdf5; }
.practice-page .skill-card-speaking .skill-icon-pill { color: #d97706; background: #fef3c7; }

.skill-badge-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}
.tag-reading { background: #eff6ff; color: #1468f3; border: 1px solid #bfdbfe; }
.tag-listening { background: #e0f2fe; color: #0284c7; border: 1px solid #bae6fd; }
.tag-writing { background: #ecfdf5; color: #059669; border: 1px solid #a7f3d0; }
.tag-speaking { background: #fef3c7; color: #b45309; border: 1px solid #fde68a; }

.practice-page .skill-card h2 {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #0f172a;
  line-height: 1.25;
}
.practice-page .skill-card p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.55;
  color: #64748b;
}

.skill-metric-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 10px 0;
  border-top: 1px solid #f1f5f9;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 16px;
  font-size: 11.5px;
  font-weight: 700;
  color: #475569;
  width: 100%;
}
.skill-metric-pills span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.skill-metric-pills .material-symbols-outlined {
  font-size: 15px;
  color: #1468f3;
}
.practice-page .skill-card-listening .skill-metric-pills .material-symbols-outlined { color: #0284c7; }
.practice-page .skill-card-writing .skill-metric-pills .material-symbols-outlined { color: #059669; }
.practice-page .skill-card-speaking .skill-metric-pills .material-symbols-outlined { color: #d97706; }

.practice-page .skill-features-snippet {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  font-size: 12px;
  font-weight: 700;
  color: #3b4d66;
}
.practice-page .skill-features-snippet span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.practice-page .skill-features-snippet .material-symbols-outlined {
  color: #1468f3;
  font-size: 15px;
}
.practice-page .skill-card-listening .skill-features-snippet .material-symbols-outlined { color: #0284c7; }
.practice-page .skill-card-writing .skill-features-snippet .material-symbols-outlined { color: #059669; }
.practice-page .skill-card-speaking .skill-features-snippet .material-symbols-outlined { color: #d97706; }

.skill-card-actions {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: auto;
}

/* Dark Theme for Practice Hub */
html[data-theme="dark"] .practice-toolbar-unified {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .practice-filter-title {
  color: #94a3b8;
}
html[data-theme="dark"] .practice-toolbar-unified .stage-chips,
html[data-theme="dark"] .practice-toolbar-unified .skill-chips {
  background: #070f1e;
  border-color: #1b2d45;
}
html[data-theme="dark"] .practice-page .filter {
  color: #94a3b8;
}
html[data-theme="dark"] .practice-page .filter:hover {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.05);
}
html[data-theme="dark"] .practice-page .filter[aria-pressed="true"] {
  color: #60a5fa;
  background: #1e293b;
}
html[data-theme="dark"] .practice-page .skill-card {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .practice-page .skill-card:hover {
  border-color: #3b82f6;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.4);
}
html[data-theme="dark"] .practice-page .skill-card h2 {
  color: #f8fafc;
}
html[data-theme="dark"] .practice-page .skill-card p {
  color: #94a3b8;
}
html[data-theme="dark"] .skill-metric-pills {
  border-color: #1b2d45;
  color: #94a3b8;
}
html[data-theme="dark"] .practice-page .skill-features-snippet {
  color: #94a3b8;
}

@media (max-width: 900px) {
  .practice-page .practice-grid {
    grid-template-columns: 1fr;
  }
  .practice-toolbar-unified {
    flex-direction: column;
    align-items: stretch;
  }
  .practice-toolbar-col {
    flex-direction: column;
    align-items: stretch;
  }
  .stage-chips, .skill-chips {
    overflow-x: auto;
  }
}

/* ==========================================================================
   Vocabulary Page
   ========================================================================== */
.vocabulary-page .vocabulary-page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--v4-line);
}
.vocabulary-page .vocabulary-summary {
  display: flex;
  gap: 12px;
}
.vocabulary-page .vocabulary-summary span {
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--v4-line);
  background: #fff;
  text-align: center;
  min-width: 90px;
}
.vocabulary-page .vocabulary-summary strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: var(--v4-ink);
}
.vocabulary-page .vocabulary-summary small {
  display: block;
  font-size: 10.5px;
  font-weight: 800;
  color: var(--v4-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.vocabulary-page .vocabulary-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
}
.vocabulary-page .vocabulary-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 480px;
}
.vocabulary-page .vocabulary-search .material-symbols-outlined {
  position: absolute;
  left: 12px;
  color: var(--v4-muted);
  font-size: 18px;
  pointer-events: none;
}
.vocabulary-page .vocabulary-search input {
  width: 100%;
  min-height: 42px;
  padding: 0 14px 0 38px;
  border-radius: 10px;
  border: 1px solid var(--v4-line);
  background: #fff;
  color: var(--v4-ink);
  font-size: 13.5px;
  font-family: inherit;
}
.vocabulary-page .vocabulary-filter {
  display: flex;
  gap: 6px;
}
.vocabulary-page .vocabulary-filter button {
  min-height: 38px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid var(--v4-line);
  background: #fff;
  color: var(--v4-muted);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}
.vocabulary-page .vocabulary-filter button:hover {
  border-color: #abbfd6;
  color: var(--v4-ink);
}
.vocabulary-page .vocabulary-filter button[aria-pressed="true"] {
  border-color: var(--v4-blue);
  background: var(--v4-blue);
  color: #fff;
}
.vocabulary-page .vocabulary-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}
.vocabulary-page .vocabulary-card {
  padding: 20px 24px;
  border-radius: 14px;
  border: 1px solid var(--v4-line);
  background: #fff;
  box-shadow: 0 4px 16px rgba(12, 28, 56, 0.03);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.vocabulary-page .vocabulary-word {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.vocabulary-page .vocabulary-word h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--v4-ink);
}
.vocabulary-page .vocabulary-word a {
  font-size: 12px;
  font-weight: 700;
  color: var(--v4-blue);
  text-decoration: none;
}
.vocabulary-page .vocabulary-context {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--v4-muted);
}
.vocabulary-page .vocabulary-context mark {
  background: rgba(20, 104, 243, 0.14);
  color: var(--v4-ink);
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 4px;
}
.vocabulary-page .vocabulary-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 4px;
}
.vocabulary-page .vocabulary-actions button {
  min-height: 32px;
  padding: 0 12px;
  border-radius: 6px;
  border: 1px solid var(--v4-line);
  background: #fff;
  color: var(--v4-ink);
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
}
.vocabulary-page .vocabulary-actions button.mastered {
  border-color: #10b981;
  background: #ecfdf5;
  color: #047857;
}
.vocabulary-page .vocabulary-actions .delete-word {
  padding: 0 6px;
  color: #94a3b8;
}
.vocabulary-page .vocabulary-actions .delete-word:hover {
  color: #ef4444;
}

/* ==========================================================================
   Lesson / Reader Page
   ========================================================================== */
.lesson-page .lesson-top-nav {
  margin-bottom: 20px;
}
.lesson-page .lesson-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--v4-blue);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(20, 104, 243, 0.08);
  transition: all 0.15s ease;
}
.lesson-page .lesson-back:hover {
  background: rgba(20, 104, 243, 0.15);
  transform: translateX(-2px);
}
.lesson-page .lesson-back .material-symbols-outlined {
  font-size: 16px;
}

/* ==========================================================================
   Dark Mode Overrides for Auth, Courses, Practice, Vocabulary & Lesson
   ========================================================================== */
html[data-theme="dark"] .auth-panel {
  background: #0b1728;
  border-color: #1b2d45;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}
html[data-theme="dark"] .auth-title {
  color: #f4f7fb;
}
html[data-theme="dark"] .google-auth-button {
  background: #0e1d32;
  border-color: #243a57;
  color: #f4f7fb;
}
html[data-theme="dark"] .google-auth-button:hover {
  border-color: var(--v4-blue);
  background: #122540;
}
html[data-theme="dark"] .auth-divider {
  color: #7b8fa8;
}
html[data-theme="dark"] .auth-divider::before, html[data-theme="dark"] .auth-divider::after {
  border-color: #1f334d;
}
html[data-theme="dark"] .auth-panel .field {
  color: #e2eaf5;
}
html[data-theme="dark"] .auth-panel .field input {
  background: #08111e;
  border-color: #1f334d;
  color: #f4f7fb;
}
html[data-theme="dark"] .auth-panel .field input:focus {
  border-color: var(--v4-blue);
  background: #0a1627;
}
html[data-theme="dark"] .auth-panel .password-toggle {
  color: #8fa2bc;
}
html[data-theme="dark"] .auth-panel .password-toggle:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
html[data-theme="dark"] .courses-page .course-card {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .courses-page .course-card.ielts-card {
  background: linear-gradient(180deg, #0f2038 0%, #0b1728 100%);
  border-color: var(--v4-blue);
}
html[data-theme="dark"] .courses-page .course-card h2 {
  color: #f4f7fb;
}
html[data-theme="dark"] .courses-page .course-features {
  border-color: #1b2d45;
}
html[data-theme="dark"] .courses-page .course-features li {
  color: #9eb2cf;
}
html[data-theme="dark"] .practice-page .practice-toolbar {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .practice-page .filter {
  background: #07101e;
  border-color: #1f334d;
  color: #9eb2cf;
}
html[data-theme="dark"] .practice-page .filter:hover {
  border-color: #3b577a;
  color: #fff;
}
html[data-theme="dark"] .practice-page .skill-card {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .practice-page .skill-card h2 {
  color: #f4f7fb;
}
html[data-theme="dark"] .practice-page .skill-features-snippet {
  border-color: #1b2d45;
  color: #9eb2cf;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-page-head {
  border-color: #1b2d45;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-summary span {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-summary strong {
  color: #f4f7fb;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-search input {
  background: #07101e;
  border-color: #1f334d;
  color: #f4f7fb;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-filter button {
  background: #07101e;
  border-color: #1f334d;
  color: #9eb2cf;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-card {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-word h2 {
  color: #f4f7fb;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-context mark {
  background: rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
}
html[data-theme="dark"] .vocabulary-page .vocabulary-actions button {
  background: #07101e;
  border-color: #1f334d;
  color: #9eb2cf;
}

/* ==========================================================================
   Student Command Center & Performance Dashboard
   ========================================================================== */
.product-dashboard {
  width: min(1200px, calc(100% - 36px));
  margin: 0 auto;
  padding: 32px 0 64px;
}
.dashboard-user-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--v4-line);
  box-shadow: 0 10px 30px rgba(12, 28, 56, 0.04);
  margin-bottom: 24px;
}
.dashboard-user-bar .dashboard-welcome {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 0;
}
.dashboard-user-bar .app-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 12px;
  font-size: 16px;
}
.dashboard-user-bar .user-meta {
  display: flex;
  flex-direction: column;
}
.dashboard-user-bar .account-name {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--v4-ink);
  letter-spacing: -0.02em;
}
.dashboard-user-bar .account-username {
  margin: 2px 0 0;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--v4-muted);
}
.dashboard-user-bar .account-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #059669;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  margin-left: 10px;
}
.dashboard-user-bar .account-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
}

/* Clean, Modest & Modern Premium Badge */
.dashboard-user-bar .account-status.is-premium,
.account-status.active,
.account-status.is-premium {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  margin-left: 10px;
  transition: all 0.2s ease;
}

html[data-theme="dark"] .dashboard-user-bar .account-status.is-premium,
html[data-theme="dark"] .account-status.is-premium {
  background: #1e293b;
  color: #f8fafc;
  border-color: #475569;
}

.vx-verified-badge {
  font-size: 15px;
  color: #0284c7;
  vertical-align: middle;
  margin-left: 3px;
}

/* Candidate Avatar styling */
.dashboard-user-bar .app-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  background: #0f172a;
  color: #ffffff;
  border: 1px solid #1e293b;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  transition: all 0.25s ease;
}

.dashboard-user-bar.is-premium .app-mark,
body.user-is-premium .dashboard-user-bar .app-mark {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  color: #ffffff;
  border: 1.5px solid #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
  font-weight: 800;
}

html[data-theme="dark"] .dashboard-user-bar.is-premium .app-mark,
html[data-theme="dark"] body.user-is-premium .dashboard-user-bar .app-mark {
  border-color: #334155;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* --- TELEGRAM-STYLE PROFILE WALLPAPER THEMES & STATUS BADGES --- */
.dashboard-user-bar {
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  padding: 16px 22px;
}

/* Telegram Doodles Pattern Wallpaper */
.dashboard-user-bar.wp-telegram_doodles {
  background: #0b1329 url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%2338bdf8' fill-opacity='0.10' fill-rule='evenodd'%3E%3Cpath d='M11 11h2v2h-2zm4 4h2v2h-2zm-8 8h2v2H7zm24-12h2v2h-2zm4 4h2v2h-2zm-8 8h2v2h-2zm24-12h2v2h-2zm4 4h2v2h-2zm-8 8h2v2h-2zm-32 32h2v2h-2zm4 4h2v2h-2zm-8 8h2v2H7zm24-12h2v2h-2zm4 4h2v2h-2zm-8 8h2v2h-2zm24-12h2v2h-2zm4 4h2v2h-2zm-8 8h2v2h-2z'/%3E%3C/g%3E%3C/svg%3E") !important;
  border-color: rgba(56, 189, 248, 0.25) !important;
  box-shadow: 0 12px 36px rgba(11, 19, 41, 0.45) !important;
}

/* Royal Sapphire Blue */
.dashboard-user-bar.wp-sapphire {
  background: linear-gradient(135deg, #061530 0%, #0d2757 50%, #1e40af 100%) !important;
  border-color: rgba(96, 165, 250, 0.3) !important;
  box-shadow: 0 12px 36px rgba(15, 39, 87, 0.35) !important;
}

/* Cyberpunk Neon Purple */
.dashboard-user-bar.wp-neon_purple {
  background: linear-gradient(135deg, #0f0a14 0%, #1e142e 50%, #2a1b40 100%) !important;
  border-color: rgba(192, 132, 252, 0.3) !important;
  box-shadow: 0 12px 36px rgba(46, 16, 101, 0.35) !important;
}

/* Emerald Luxury Green */
.dashboard-user-bar.wp-emerald {
  background: linear-gradient(135deg, #022119 0%, #064e3b 50%, #065f46 100%) !important;
  border-color: rgba(52, 211, 153, 0.3) !important;
  box-shadow: 0 12px 36px rgba(6, 78, 59, 0.35) !important;
}

/* Sunset Gold & Crimson */
.dashboard-user-bar.wp-sunset {
  background: linear-gradient(135deg, #2b0b08 0%, #54190c 45%, #9a3412 100%) !important;
  border-color: rgba(251, 146, 60, 0.3) !important;
  box-shadow: 0 12px 36px rgba(84, 25, 12, 0.35) !important;
}

/* Deep Galaxy Nebula */
.dashboard-user-bar.wp-galaxy {
  background: linear-gradient(135deg, #080a14 0%, #131438 40%, #2e1065 100%) !important;
  border-color: rgba(129, 140, 248, 0.3) !important;
  box-shadow: 0 12px 36px rgba(19, 20, 56, 0.35) !important;
}

/* Arctic Aurora Turquoise */
.dashboard-user-bar.wp-aurora {
  background: linear-gradient(135deg, #032422 0%, #0c4a45 50%, #0369a1 100%) !important;
  border-color: rgba(45, 212, 191, 0.3) !important;
  box-shadow: 0 12px 36px rgba(12, 74, 69, 0.35) !important;
}

/* Obsidian Velvet Dark */
.dashboard-user-bar.wp-obsidian {
  background: linear-gradient(135deg, #09090b 0%, #18181b 100%) !important;
  border-color: rgba(255, 255, 255, 0.15) !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5) !important;
}

/* Enhancements for All Wallpaper Themes */
.dashboard-user-bar[class*="wp-"]:not(.wp-default) {
  border-width: 1px !important;
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .account-name {
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .account-username {
  color: rgba(255, 255, 255, 0.8) !important;
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .app-mark {
  background: rgba(255, 255, 255, 0.16) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #ffffff !important;
  border: 1.5px solid rgba(255, 255, 255, 0.35) !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25) !important;
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .account-status.is-premium {
  background: rgba(255, 255, 255, 0.12) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.22) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12) !important;
}

/* User Action Buttons - Clean Luxury Glass & Solid */
.dashboard-user-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.vx-user-btn-glass,
.vx-user-btn-primary,
.vx-user-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 7px 14px;
  min-height: 38px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  box-sizing: border-box;
  line-height: 1;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.vx-user-btn-glass {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  color: #0f172a;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.vx-user-btn-glass:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.vx-user-btn-primary {
  background: #0f172a;
  border: 1px solid #0f172a;
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.15);
}
.vx-user-btn-primary:hover {
  background: #1e293b;
  border-color: #1e293b;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.22);
}

.vx-user-btn-ghost {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  color: #475569;
}
.vx-user-btn-ghost:hover {
  background: #fee2e2;
  border-color: #fecaca;
  color: #b91c1c;
  transform: translateY(-1px);
}

/* Glassmorphism Overrides when Wallpaper is Active */
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-glass,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .button.secondary {
  background: rgba(255, 255, 255, 0.14) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.22) !important;
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12) !important;
}
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-glass:hover,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .button.secondary:hover {
  background: rgba(255, 255, 255, 0.24) !important;
  border-color: rgba(255, 255, 255, 0.4) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2) !important;
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-primary,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .button.primary {
  background: #ffffff !important;
  border: 1px solid #ffffff !important;
  color: #0f172a !important;
  font-weight: 700 !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22) !important;
}
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-primary:hover,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .button.primary:hover {
  background: #f8fafc !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3) !important;
}

.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-ghost,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .dashboard-signout {
  background: rgba(255, 255, 255, 0.08) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.16) !important;
  color: rgba(255, 255, 255, 0.85) !important;
}
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .vx-user-btn-ghost:hover,
.dashboard-user-bar[class*="wp-"]:not(.wp-default) .dashboard-signout:hover {
  background: rgba(239, 68, 68, 0.22) !important;
  border-color: rgba(239, 68, 68, 0.45) !important;
  color: #fca5a5 !important;
  transform: translateY(-1px);
}

/* --- TELEGRAM STATUS BADGE BUTTON & ANIMATIONS --- */
.user-status-emoji-btn,
button#openStatusBadgeModalBtn {
  background: transparent !important;
  background-color: transparent !important;
  border: none !important;
  border-width: 0 !important;
  border-style: none !important;
  outline: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 0 !important;
  cursor: pointer;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
  text-decoration: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  transition: transform 0.2s ease;
}
.user-status-emoji-btn:hover,
button#openStatusBadgeModalBtn:hover {
  transform: translateY(-1px) scale(1.08) !important;
}

.tg-status-badge {
  display: inline-block;
  vertical-align: middle;
  line-height: 1;
  user-select: none;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.15));
  transition: filter 0.25s ease, transform 0.25s ease;
}

/* 1. Golden Star Animation - Smooth Shimmer */
@keyframes tgAnimStar {
  0%, 100% {
    transform: rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(245, 158, 11, 0.35)) brightness(1);
  }
  50% {
    transform: rotate(6deg);
    filter: drop-shadow(0 0 1px rgba(245, 158, 11, 0.15)) brightness(1.15);
  }
}
.tg-anim-star {
  animation: tgAnimStar 4.5s ease-in-out infinite;
}

/* 2. Flame / Fire Animation - Gentle Sway */
@keyframes tgAnimFire {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(249, 115, 22, 0.35));
  }
  30% {
    transform: translateY(-1px) rotate(-2deg);
    filter: drop-shadow(0 0 1px rgba(239, 68, 68, 0.15)) brightness(1.1);
  }
  70% {
    transform: translateY(-0.5px) rotate(2deg);
    filter: drop-shadow(0 0 1px rgba(249, 115, 22, 0.15)) brightness(1.05);
  }
}
.tg-anim-fire {
  animation: tgAnimFire 3.2s ease-in-out infinite;
}

/* 3. Lightning / Bolt Animation - Micro Gleam */
@keyframes tgAnimBolt {
  0%, 88%, 100% {
    transform: translateY(0);
    filter: drop-shadow(0 1px 2px rgba(234, 179, 8, 0.35)) brightness(1);
  }
  94% {
    transform: translateY(-0.8px);
    filter: drop-shadow(0 0 1px rgba(250, 204, 21, 0.15)) brightness(1.25);
  }
}
.tg-anim-bolt {
  animation: tgAnimBolt 3.5s ease-in-out infinite;
}

/* 4. Blue Diamond Animation - Crystal Refraction */
@keyframes tgAnimDiamond {
  0%, 100% {
    transform: translateY(0);
    filter: drop-shadow(0 1px 2px rgba(56, 189, 248, 0.35)) brightness(1);
  }
  35% {
    transform: translateY(-0.5px);
    filter: drop-shadow(0 0 1px rgba(56, 189, 248, 0.15)) brightness(1.2);
  }
  70% {
    transform: translateY(0);
    filter: drop-shadow(0 1px 2px rgba(56, 189, 248, 0.35)) brightness(1.05);
  }
}
.tg-anim-diamond {
  animation: tgAnimDiamond 4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* 5. Royal Crown Animation - Regal Sheen */
@keyframes tgAnimCrown {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(234, 179, 8, 0.35));
  }
  50% {
    transform: translateY(-0.8px) rotate(3deg);
    filter: drop-shadow(0 0 1px rgba(245, 158, 11, 0.15)) brightness(1.15);
  }
}
.tg-anim-crown {
  animation: tgAnimCrown 4s ease-in-out infinite;
}

/* 6. Blue Verified Check Animation - Clean Telegram Sheen */
@keyframes tgAnimVerified {
  0%, 100% {
    transform: translateY(0);
    filter: drop-shadow(0 1px 2px rgba(2, 132, 199, 0.35)) brightness(1);
  }
  50% {
    transform: translateY(-0.5px);
    filter: drop-shadow(0 0 1px rgba(2, 132, 199, 0.15)) brightness(1.15);
  }
}
.tg-anim-verified {
  animation: tgAnimVerified 4s ease-in-out infinite;
}

/* 7. Rocket Animation - Smooth Drift */
@keyframes tgAnimRocket {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(99, 102, 241, 0.35));
  }
  50% {
    transform: translate(0.5px, -1.2px) rotate(-3deg);
    filter: drop-shadow(0 0 1px rgba(99, 102, 241, 0.15)) brightness(1.12);
  }
}
.tg-anim-rocket {
  animation: tgAnimRocket 3.5s ease-in-out infinite;
}

/* 8. Sparkles Animation - Gentle Twinkle */
@keyframes tgAnimSparkle {
  0%, 100% {
    transform: rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(168, 85, 247, 0.35)) brightness(1);
  }
  50% {
    transform: rotate(20deg);
    filter: drop-shadow(0 0 1px rgba(192, 132, 252, 0.15)) brightness(1.2);
  }
}
.tg-anim-sparkle {
  animation: tgAnimSparkle 4.5s ease-in-out infinite;
}

/* 9. Trophy Animation - Soft Sheen */
@keyframes tgAnimTrophy {
  0%, 100% {
    transform: rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(251, 191, 36, 0.35));
  }
  50% {
    transform: rotate(-3deg);
    filter: drop-shadow(0 0 1px rgba(251, 191, 36, 0.15)) brightness(1.12);
  }
}
.tg-anim-trophy {
  animation: tgAnimTrophy 4s ease-in-out infinite;
}

/* 10. Graduate Cap Animation */
@keyframes tgAnimGraduate {
  0%, 100% {
    transform: rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(52, 211, 153, 0.35));
  }
  50% {
    transform: rotate(3deg);
    filter: drop-shadow(0 0 1px rgba(52, 211, 153, 0.15)) brightness(1.12);
  }
}
.tg-anim-graduate {
  animation: tgAnimGraduate 4s ease-in-out infinite;
}

/* 11. Target Animation */
@keyframes tgAnimTarget {
  0%, 100% {
    transform: translateY(0);
    filter: drop-shadow(0 1px 2px rgba(239, 68, 68, 0.35)) brightness(1);
  }
  50% {
    transform: translateY(-0.5px);
    filter: drop-shadow(0 0 1px rgba(239, 68, 68, 0.15)) brightness(1.15);
  }
}
.tg-anim-target {
  animation: tgAnimTarget 3.5s ease-in-out infinite;
}

/* 12. Cyber Gamer Animation */
@keyframes tgAnimGamer {
  0%, 100% {
    transform: rotate(0deg);
    filter: drop-shadow(0 1px 2px rgba(168, 85, 247, 0.35));
  }
  50% {
    transform: rotate(3deg);
    filter: drop-shadow(0 0 1px rgba(168, 85, 247, 0.15)) brightness(1.15);
  }
}
.tg-anim-gamer {
  animation: tgAnimGamer 4s ease-in-out infinite;
}

/* --- MODERN TOAST NOTIFICATIONS --- */
.vx-toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 999999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 440px;
  width: calc(100% - 48px);
}

.vx-toast {
  pointer-events: auto;
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1.5px solid #e2e8f0;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.14), 0 4px 12px rgba(0, 0, 0, 0.05);
  color: #0f172a;
  transform: translateY(-24px) scale(0.92);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  cursor: pointer;
}

.vx-toast.is-visible {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.vx-toast.is-hiding {
  transform: translateY(-16px) scale(0.92);
  opacity: 0;
}

.vx-toast-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
}

.vx-toast-icon-wrap span {
  font-size: 20px;
}

.vx-toast-content {
  flex: 1;
  min-width: 0;
}

.vx-toast-message {
  font-size: 13.5px;
  font-weight: 700;
  line-height: 1.45;
  color: #0f172a;
  word-break: break-word;
}

.vx-toast-close {
  background: transparent;
  border: 0;
  color: #94a3b8;
  font-size: 22px;
  line-height: 1;
  padding: 0 4px;
  cursor: pointer;
  transition: color 0.15s;
  flex-shrink: 0;
}
.vx-toast-close:hover {
  color: #0f172a;
}

.vx-toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3.5px;
  width: 100%;
  background: rgba(0, 0, 0, 0.1);
  animation: vxToastProgress linear forwards;
}

@keyframes vxToastProgress {
  from { width: 100%; }
  to { width: 0%; }
}

/* Success Toast */
.vx-toast-success {
  border-color: #86efac;
  background: rgba(255, 255, 255, 0.98);
}
.vx-toast-success .vx-toast-icon-wrap {
  background: #f0fdf4;
  color: #16a34a;
}
.vx-toast-success .vx-toast-progress {
  background: #22c55e;
}

/* Error Toast */
.vx-toast-error {
  border-color: #fca5a5;
  background: rgba(255, 255, 255, 0.98);
}
.vx-toast-error .vx-toast-icon-wrap {
  background: #fef2f2;
  color: #dc2626;
}
.vx-toast-error .vx-toast-progress {
  background: #ef4444;
}

/* Warning Toast */
.vx-toast-warning {
  border-color: #fde68a;
  background: rgba(255, 255, 255, 0.98);
}
.vx-toast-warning .vx-toast-icon-wrap {
  background: #fffbeb;
  color: #d97706;
}
.vx-toast-warning .vx-toast-progress {
  background: #f59e0b;
}

/* Info Toast */
.vx-toast-info {
  border-color: #93c5fd;
  background: rgba(255, 255, 255, 0.98);
}
.vx-toast-info .vx-toast-icon-wrap {
  background: #eff6ff;
  color: #2563eb;
}
.vx-toast-info .vx-toast-progress {
  background: #3b82f6;
}

/* Dark Mode Toasts */
html[data-theme="dark"] .vx-toast {
  background: rgba(15, 23, 42, 0.95);
  border-color: #334155;
  color: #f8fafc;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}
html[data-theme="dark"] .vx-toast-message {
  color: #f8fafc;
}
html[data-theme="dark"] .vx-toast-close:hover {
  color: #f8fafc;
}
html[data-theme="dark"] .vx-toast-success {
  border-color: #166534;
}
html[data-theme="dark"] .vx-toast-success .vx-toast-icon-wrap {
  background: #052e16;
}
html[data-theme="dark"] .vx-toast-error {
  border-color: #991b1b;
}
html[data-theme="dark"] .vx-toast-error .vx-toast-icon-wrap {
  background: #450a0a;
}
html[data-theme="dark"] .vx-toast-warning {
  border-color: #92400e;
}
html[data-theme="dark"] .vx-toast-warning .vx-toast-icon-wrap {
  background: #451a03;
}

.dashboard-user-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Dashboard Nav Tabs */
.product-dashboard .account-nav {
  display: flex;
  gap: 6px;
  padding: 6px;
  border-radius: 14px;
  background: rgba(226, 233, 243, 0.45);
  border: 1px solid var(--v4-line);
  margin-bottom: 28px;
  width: fit-content;
}
.product-dashboard .account-nav button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 18px;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--v4-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.product-dashboard .account-nav button:hover {
  color: var(--v4-ink);
}
.product-dashboard .account-nav button[aria-selected="true"] {
  background: #fff;
  color: var(--v4-blue);
  box-shadow: 0 4px 14px rgba(12, 28, 56, 0.08);
}
.product-dashboard .account-nav button .material-symbols-outlined {
  font-size: 17px;
}

/* 4 Core Stat Cards */
.product-dashboard .dashboard-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
.product-dashboard .dashboard-stat-grid .stat {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 22px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--v4-line);
  box-shadow: 0 8px 24px rgba(12, 28, 56, 0.03);
  transition: all 0.2s ease;
}
.product-dashboard .dashboard-stat-grid .stat:hover {
  transform: translateY(-2px);
  border-color: #abbfd6;
  box-shadow: var(--v4-shadow-soft);
}
.stat-icon-wrap {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(20, 104, 243, 0.08);
  color: var(--v4-blue);
}
.stat-tests .stat-icon-wrap { color: #0284c7; background: rgba(2, 132, 199, 0.09); }
.stat-reading-avg .stat-icon-wrap { color: #10b981; background: rgba(16, 185, 129, 0.09); }
.stat-reading-best .stat-icon-wrap { color: #f59e0b; background: rgba(245, 158, 11, 0.1); }
.stat-listening .stat-icon-wrap { color: #6366f1; background: rgba(99, 102, 241, 0.09); }
.stat-icon-wrap .material-symbols-outlined {
  font-size: 20px;
}
.stat-content {
  display: flex;
  flex-direction: column;
}
.stat-content span {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--v4-muted);
  margin-bottom: 4px;
}
.stat-content strong {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--v4-ink);
  line-height: 1.1;
}
.stat-content small {
  font-size: 11px;
  font-weight: 600;
  color: var(--v4-muted);
  margin-top: 4px;
}

/* Charts Grid */
.dashboard-chart-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
  gap: 20px;
  margin-bottom: 28px;
}
.dashboard-chart-card {
  padding: 26px 28px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--v4-line);
  box-shadow: 0 10px 30px rgba(12, 28, 56, 0.04);
}
.chart-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.chart-card-head h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--v4-ink);
  letter-spacing: -0.025em;
}
.chart-insight {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  color: var(--v4-muted);
  background: #f1f5f9;
}
.chart-insight.positive {
  color: #059669;
  background: #ecfdf5;
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.chart-frame {
  position: relative;
  min-height: 180px;
}
.chart-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--v4-muted);
  font-size: 13px;
  font-weight: 600;
  margin: 0;
}

/* Dark Mode for Student Command Center */
html[data-theme="dark"] .dashboard-user-bar {
  background: #0b1728;
  border-color: #1b2d45;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
html[data-theme="dark"] .dashboard-user-bar .account-name {
  color: #f4f7fb;
}
html[data-theme="dark"] .product-dashboard .account-nav {
  background: rgba(14, 28, 50, 0.6);
  border-color: #1b2d45;
}
html[data-theme="dark"] .product-dashboard .account-nav button[aria-selected="true"] {
  background: #1468f3;
  color: #fff;
  box-shadow: 0 4px 14px rgba(20, 104, 243, 0.35);
}
html[data-theme="dark"] .product-dashboard .dashboard-stat-grid .stat {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .stat-content strong {
  color: #f4f7fb;
}
html[data-theme="dark"] .dashboard-chart-card {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .chart-card-head h2 {
  color: #f4f7fb;
}

/* ==========================================================================
   Modern LMS Student Workspace Sidebar & Layout
   ========================================================================== */
/* ==========================================================================
   Modern LMS Student Workspace Sidebar & Layout (World-Class Redesign)
   ========================================================================== */
body.member-layout {
  padding-left: 264px !important;
  transition: padding-left 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}
body.member-layout.member-sidebar-collapsed {
  padding-left: 72px !important;
}

.member-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 264px;
  height: 100vh;
  height: 100dvh;
  z-index: 9999;
  display: flex !important;
  flex-direction: column;
  background: #ffffff;
  border-right: 1px solid rgba(226, 232, 240, 0.85);
  box-shadow: 2px 0 20px rgba(15, 23, 42, 0.03);
  padding: 0;
  transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  user-select: none;
}
body.member-sidebar-collapsed .member-sidebar {
  width: 72px;
}

/* Sidebar Top Brand Header */
.member-sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(241, 245, 249, 0.9);
  flex-shrink: 0;
}
.member-sidebar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  color: #0f172a;
  font-size: 14px;
  letter-spacing: -0.025em;
  overflow: hidden;
  white-space: nowrap;
}
.member-sidebar-brand .app-mark {
  height: 28px;
  width: auto;
  min-width: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  box-shadow: none;
}
.member-sidebar-brand .app-mark img,
.member-sidebar-brand .app-mark svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.member-brand-badge {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #1468f3;
  background: rgba(20, 104, 243, 0.08);
  border: 1px solid rgba(20, 104, 243, 0.16);
  padding: 1px 6px;
  border-radius: 6px;
}

.member-sidebar-collapse-btn {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  color: #64748b;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.15s ease;
}
.member-sidebar-collapse-btn:hover {
  background: #f1f5f9;
  color: #0f172a;
  border-color: #cbd5e1;
}
.member-sidebar-collapse-btn .material-symbols-outlined {
  font-size: 18px;
}

.member-sidebar-collapsed .member-sidebar-top {
  padding: 0 8px;
  justify-content: center;
}
.member-sidebar-collapsed .member-sidebar-brand {
  display: none !important;
}
.member-sidebar-collapsed .member-sidebar-collapse-btn {
  margin: 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

/* Sidebar Nav Body (Clean, Zero-clutter, Invisible Scrollbar) */
.member-sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.member-sidebar-nav::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.member-nav-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.member-nav-section-title {
  padding: 4px 10px 6px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94a3b8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.member-sidebar-collapsed .member-nav-section-title {
  display: none;
}

/* Modern Item Links (Title Case, Crisp, Balanced) */
.member-sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  padding: 6px 10px;
  border-radius: 8px;
  color: #475569;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-transform: none !important;
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  position: relative;
  border: 1px solid transparent;
}
.member-sidebar-nav a:hover {
  background: #f1f5f9;
  color: #0f172a;
}
.member-sidebar-nav a:hover .member-nav-icon {
  color: #0f172a;
}

/* Active State (Clean Linear / Stripe Minimalist Style) */
.member-sidebar-nav a[aria-current="page"] {
  background: #f1f5f9;
  color: #0f172a;
  font-weight: 600;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.member-sidebar-nav a[aria-current="page"] .member-nav-icon {
  color: #0f172a;
}

.member-nav-icon {
  font-size: 18px;
  flex: 0 0 18px;
  display: grid;
  place-items: center;
  color: #64748b;
  transition: color 0.15s ease;
}

.member-nav-label {
  font-size: 13px;
  font-weight: 500;
  text-transform: none !important;
  letter-spacing: -0.01em;
  color: inherit;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}
.member-sidebar-nav a[aria-current="page"] .member-nav-label {
  font-weight: 600;
}

.member-nav-badge {
  margin-left: auto;
  padding: 1.5px 6px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #1468f3, #06b6d4);
  color: #ffffff;
}

/* Collapsed Sidebar Mode Links */
.member-sidebar-collapsed .member-sidebar-nav a {
  width: 42px;
  height: 42px;
  margin: 3px auto;
  border-radius: 11px;
  justify-content: center;
  padding: 0;
  box-sizing: border-box;
}
.member-sidebar-collapsed .member-sidebar-nav a[aria-current="page"] {
  background: linear-gradient(135deg, #1468f3, #2563eb);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(20, 104, 243, 0.35);
}
.member-sidebar-collapsed .member-sidebar-nav a[aria-current="page"] .member-nav-icon {
  color: #ffffff;
}
.member-sidebar-collapsed .member-nav-label,
.member-sidebar-collapsed .member-nav-badge {
  display: none !important;
}

/* Premium Pro Card in Sidebar */
.member-sidebar-pro-card {
  margin-bottom: 10px;
  border-radius: 13px;
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: #ffffff;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  position: relative;
  text-align: left;
}

.member-sidebar-pro-card:hover {
  transform: translateY(-2px);
  border-color: rgba(250, 204, 21, 0.4);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.pro-card-collapsed-badge {
  display: none;
}

.pro-card-expanded-content {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pro-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.pro-star-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #facc15;
  background: rgba(250, 204, 21, 0.15);
  padding: 2px 6px;
  border-radius: 5px;
}

.pro-price-pill {
  font-size: 11px;
  font-weight: 800;
  color: #e2e8f0;
}

.pro-desc {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.4;
  color: #94a3b8;
}

.pro-action-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 11.5px;
  font-weight: 800;
  color: #38bdf8;
}

/* Collapsed Sidebar Mode Pro Badge */
.member-sidebar-collapsed .member-sidebar-pro-card {
  width: 42px;
  height: 42px;
  margin: 0 auto 10px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border: 1.5px solid rgba(250, 204, 21, 0.35);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.member-sidebar-collapsed .pro-card-expanded-content {
  display: none;
}

.member-sidebar-collapsed .pro-card-collapsed-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
}

.pro-card-collapsed-badge .pro-icon {
  font-size: 17px;
  color: #facc15;
}

.pro-card-collapsed-badge .pro-tag {
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: #facc15;
}

/* Sidebar Footer & Profile Card */
.member-sidebar-footer {
  padding: 10px 12px;
  border-top: 1px solid rgba(241, 245, 249, 0.9);
  flex-shrink: 0;
  background: #ffffff;
}

.member-sidebar-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 11px;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: all 0.15s ease;
}
.member-sidebar-profile:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}
.member-avatar {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  border-radius: 8px;
  background: #0f172a;
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.member-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.member-profile-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}
.member-profile-info strong {
  font-size: 13px;
  font-weight: 600;
  color: #0f172a;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.member-profile-info small {
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
}
.member-profile-info small.plan-premium {
  color: #b45309;
}
.member-profile-info small.plan-free {
  color: #64748b;
}
.member-profile-arrow {
  color: #94a3b8;
  font-size: 16px;
}
.member-sidebar-collapsed .member-profile-info,
.member-sidebar-collapsed .member-profile-arrow {
  display: none !important;
}
.member-sidebar-collapsed .member-sidebar-profile {
  justify-content: center;
  padding: 4px 0;
  background: transparent;
  border-color: transparent;
}

/* Mobile Drawer Overlay */
.member-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 15, 29, 0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: none;
  border: none;
}
.member-sidebar-open .member-sidebar-overlay {
  display: block;
}

.member-sidebar-toggle {
  display: none;
}

/* Dark Theme for Sidebar */
html[data-theme="dark"] .member-sidebar {
  background: #080f1d;
  border-color: rgba(30, 41, 59, 0.85);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
}
html[data-theme="dark"] .member-sidebar-top,
html[data-theme="dark"] .member-sidebar-footer {
  border-color: rgba(30, 41, 59, 0.8);
  background: #080f1d;
}
html[data-theme="dark"] .member-sidebar-brand {
  color: #f8fafc;
}
html[data-theme="dark"] .member-sidebar-collapse-btn {
  background: #0f172a;
  border-color: #334155;
  color: #94a3b8;
}
html[data-theme="dark"] .member-sidebar-collapse-btn:hover {
  background: #1e293b;
  color: #f8fafc;
}
html[data-theme="dark"] .member-sidebar-nav a {
  color: #94a3b8;
}
html[data-theme="dark"] .member-sidebar-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #f8fafc;
}
html[data-theme="dark"] .member-sidebar-nav a[aria-current="page"] {
  background: #1e293b;
  color: #f8fafc;
  border-color: #334155;
}
html[data-theme="dark"] .member-sidebar-nav a[aria-current="page"] .member-nav-icon {
  color: #f8fafc;
}
html[data-theme="dark"] .member-sidebar-profile {
  background: #0f172a;
  border-color: #1e293b;
}
html[data-theme="dark"] .member-profile-info strong {
  color: #f8fafc;
}

/* ==========================================================================
   Member Workspace Layout Rules (Hide Landing Header)
   ========================================================================== */
body.member-layout .app-header {
  display: none !important;
}

.member-mobile-bar {
  display: none;
}

/* Responsive breakpoint for Mobile Screens */
@media (max-width: 900px) {
  body.member-layout,
  body.member-layout.member-sidebar-collapsed {
    padding-left: 0 !important;
  }
  body.member-layout .member-mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 990;
    width: 100%;
    box-sizing: border-box;
  }
  html[data-theme="dark"] body.member-layout .member-mobile-bar {
    background: #080f1d;
    border-color: #1b2d45;
  }
  .member-mobile-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--v4-ink);
    font-weight: 800;
    font-size: 13.5px;
    letter-spacing: -0.02em;
  }
  html[data-theme="dark"] .member-mobile-brand {
    color: #f8fafc;
  }
  .member-mobile-brand .app-mark {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }
  .member-mobile-actions {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .member-theme-btn {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    color: #475569;
    cursor: pointer;
  }
  html[data-theme="dark"] .member-theme-btn {
    background: #0f172a;
    border-color: #1e293b;
    color: #f8fafc;
  }
  .member-mobile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1468f3, #0f52ba);
    color: #ffffff;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 12px;
    text-decoration: none;
    overflow: hidden;
  }
  .member-mobile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .member-sidebar {
    transform: translateX(-105%) !important;
    width: 280px !important;
    box-shadow: 10px 0 35px rgba(0, 0, 0, 0.25);
  }
  body.member-sidebar-open .member-sidebar {
    transform: translateX(0) !important;
  }
  .member-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(4px);
    z-index: 9998;
    display: none;
    border: none;
  }
  body.member-sidebar-open .member-sidebar-overlay {
    display: block !important;
  }
  .member-sidebar-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--v4-line);
    background: #ffffff;
    color: var(--v4-ink);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
  }
  html[data-theme="dark"] .member-sidebar-toggle {
    background: #0f172a;
    border-color: #1e293b;
    color: #f8fafc;
  }
}

/* ==========================================================================
   IELTS Pre-Flight Test Launch Modal
   ========================================================================== */
.test-launch-modal {
  position: fixed;
  inset: 0;
  z-index: 100005;
  display: none;
  place-items: center;
  padding: 16px;
  background: rgba(10, 22, 41, 0.7);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.test-launch-modal.show {
  display: grid;
  opacity: 1;
}
.test-launch-card {
  width: min(780px, calc(100% - 24px));
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px 36px;
  border-radius: 24px;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.95);
  box-shadow: 0 25px 60px -12px rgba(12, 28, 56, 0.25);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.test-launch-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--v4-line);
  padding-bottom: 16px;
}
.test-launch-header h2 {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 800;
  color: var(--v4-ink);
  letter-spacing: -0.025em;
}
.test-launch-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--v4-line);
  background: #f8fafc;
  color: #64748b;
  font-size: 20px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.15s ease;
}
.test-launch-close:hover {
  background: #f1f5f9;
  color: var(--v4-ink);
}

.test-launch-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.test-launch-section-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}
.test-launch-list {
  margin: 0;
  padding-left: 20px;
  color: #334155;
  font-size: 13.5px;
  line-height: 1.6;
}
.test-launch-note {
  padding: 14px 18px;
  border-radius: 12px;
  background: #f8fafc;
  border-left: 4px solid #f59e0b;
}
.test-launch-note .test-launch-list {
  color: #475569;
  font-size: 12.5px;
}

/* 2 Exam Mode Selection Cards */
.test-mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 4px;
}
.test-mode-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  border-radius: 16px;
  border: 2px solid #e2e8f0;
  background: #ffffff;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}
.test-mode-card:hover {
  border-color: #93c5fd;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(20, 104, 243, 0.06);
}
.test-mode-card.selected {
  border-color: #1468f3;
  background: #f8faff;
  box-shadow: 0 12px 30px rgba(20, 104, 243, 0.12);
}
.test-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
  width: fit-content;
}
.test-mode-badge.real {
  background: #fee2e2;
  color: #dc2626;
  border: 1px solid rgba(220, 38, 38, 0.2);
}
.test-mode-badge.practice {
  background: #e0f2fe;
  color: #0284c7;
  border: 1px solid rgba(2, 132, 199, 0.2);
}

.test-mode-card-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.test-mode-radio {
  width: 18px;
  height: 18px;
  accent-color: #1468f3;
  cursor: pointer;
}
.test-mode-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--v4-ink);
}
.test-mode-desc {
  margin: 0;
  font-size: 12.5px;
  color: #64748b;
  line-height: 1.5;
}

.test-launch-actions {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}
.test-launch-start-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1468f3, #0f52ba);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(20, 104, 243, 0.3);
  transition: all 0.2s ease;
}
.test-launch-start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(20, 104, 243, 0.4);
}

@media (max-width: 680px) {
  .test-mode-grid {
    grid-template-columns: 1fr;
  }
  .test-launch-card {
    padding: 24px 20px;
  }
}

/* Dark Mode for Pre-Flight Test Modal */
html[data-theme="dark"] .test-launch-card {
  background: #0b1728;
  border-color: #1b2d45;
  color: #f8fafc;
}
html[data-theme="dark"] .test-launch-header h2 {
  color: #f8fafc;
}
html[data-theme="dark"] .test-launch-close {
  background: #0f172a;
  border-color: #1e293b;
  color: #94a3b8;
}
html[data-theme="dark"] .test-launch-list {
  color: #94a3b8;
}
html[data-theme="dark"] .test-launch-note {
  background: #08101d;
}
html[data-theme="dark"] .test-mode-card {
  background: #080f1d;
  border-color: #1b2d45;
}
html[data-theme="dark"] .test-mode-card.selected {
  border-color: #1468f3;
  background: rgba(20, 104, 243, 0.1);
}
html[data-theme="dark"] .test-mode-card h3 {
  color: #f8fafc;
}
html[data-theme="dark"] .test-mode-desc {
  color: #94a3b8;
}

/* ==========================================================================
   Modern & Psychological Materials Library Design
   ========================================================================== */
.vx-top-notification-banner {
  background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 100%);
  color: #ffffff;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  box-shadow: 0 2px 10px rgba(79, 70, 229, 0.2);
}
.vx-top-notification-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 1200px;
}
.vx-top-notification-content .icon-gift {
  font-size: 18px;
  color: #fef08a;
}
.vx-top-notification-btn {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 4px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 11.5px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: all 0.15s ease;
  white-space: nowrap;
}
.vx-top-notification-btn:hover {
  background: #ffffff;
  color: #4f46e5;
}

.materials-shell {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 24px;
  padding-bottom: 64px;
}

/* Breadcrumbs */
.vx-breadcrumb-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: #64748b;
  margin-bottom: 20px;
  font-weight: 600;
}
.vx-breadcrumb-bar a {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.vx-breadcrumb-bar a:hover {
  color: var(--v4-blue);
}
.vx-breadcrumb-bar .sep {
  color: #cbd5e1;
}
.vx-breadcrumb-bar .current {
  color: var(--v4-ink);
  font-weight: 800;
}

/* Hero Motivation Banner Card */
.vx-hero-banner-card {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 1px solid #dbeafe;
  border-radius: 20px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
  box-shadow: 0 4px 20px rgba(20, 104, 243, 0.04);
  flex-wrap: wrap;
}
.vx-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: #e0e7ff;
  color: #4338ca;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.vx-hero-tag .material-symbols-outlined {
  font-size: 14px;
}
.vx-hero-banner-info h2 {
  font-size: clamp(20px, 2.5vw, 25px);
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 8px;
  letter-spacing: -0.03em;
}
.vx-hero-banner-info p {
  font-size: 13.5px;
  color: #475569;
  margin: 0;
  max-width: 620px;
  line-height: 1.55;
}
.vx-hero-unlock-btn {
  background: linear-gradient(135deg, #7c3aed 0%, #db2777 100%);
  color: #ffffff;
  border: 0;
  border-radius: 12px;
  padding: 12px 24px;
  font-size: 13.5px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.3);
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.vx-hero-unlock-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
}

/* Test Packs Hub Section */
.vx-test-packs-section {
  margin-bottom: 36px;
}
.vx-section-heading {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
}
.vx-test-packs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.vx-pack-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px rgba(12, 28, 56, 0.03);
}
.vx-pack-card:hover {
  transform: translateY(-3px);
  border-color: #93c5fd;
  box-shadow: 0 12px 28px rgba(20, 104, 243, 0.08);
}
.vx-pack-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.vx-pack-head h3 {
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
  margin: 0;
  letter-spacing: -0.02em;
}
.vx-pack-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 18px;
}
.vx-pack-icon .material-symbols-outlined {
  font-size: 20px;
}
.icon-listening {
  background: #fef9c3;
  color: #ca8a04;
}
.icon-reading {
  background: #dcfce7;
  color: #16a34a;
}
.icon-writing {
  background: #e0f2fe;
  color: #0284c7;
}
.icon-speaking {
  background: #fee2e2;
  color: #dc2626;
}
.vx-pack-card p {
  font-size: 12.5px;
  color: #64748b;
  line-height: 1.45;
  margin: 0 0 16px;
  min-height: 36px;
}
.vx-pack-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  font-weight: 700;
  color: #64748b;
  border-top: 1px solid #f1f5f9;
  padding-top: 12px;
  margin-top: auto;
}
.vx-pack-duration {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.vx-pack-duration .material-symbols-outlined {
  font-size: 14px;
}
.vx-pack-link {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: #1468f3;
  font-weight: 800;
}
.vx-pack-link .material-symbols-outlined {
  font-size: 16px;
}

@media (max-width: 1024px) {
  .vx-test-packs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .vx-test-packs-grid {
    grid-template-columns: 1fr;
  }
}

.library-header-compact {
  display: block;
  margin-bottom: 8px;
  border: none;
  padding: 0;
}
.library-header-copy {
  max-width: 100%;
}
.library-header-compact .page-kicker {
  color: var(--v4-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.library-title {
  margin: 0 0 6px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--v4-ink);
  line-height: 1.15;
}
.library-subtitle {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--v4-muted);
}
.vx-readiness-icon-wrap {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #eff6ff;
  color: #1468f3;
  display: grid;
  place-items: center;
  font-size: 20px;
}
.vx-readiness-icon-wrap .material-symbols-outlined {
  font-size: 22px;
}
.vx-readiness-text {
  display: flex;
  flex-direction: column;
}
.vx-readiness-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--v4-ink);
  margin-bottom: 5px;
}
.vx-readiness-title strong {
  font-weight: 800;
  color: #1468f3;
}
.vx-readiness-bar-track {
  width: 140px;
  height: 6px;
  border-radius: 99px;
  background: #e2e8f0;
  overflow: hidden;
  margin-bottom: 4px;
}
.vx-readiness-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #1468f3, #38bdf8);
  transition: width 0.5s ease;
}
.vx-readiness-sub {
  font-size: 10.5px;
  font-weight: 700;
  color: #64748b;
}

/* Segmented Category Tabs */
.library-tabs {
  display: flex;
  gap: 6px;
  padding: 6px;
  border-radius: 14px;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: 16px;
}
.library-tabs::-webkit-scrollbar {
  display: none;
}
.library-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 12.5px;
  font-weight: 700;
  color: #64748b;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.library-tab .tab-icon {
  font-size: 16px;
  color: #94a3b8;
  transition: color 0.15s ease;
}
.library-tab:hover {
  color: #0f172a;
  background: rgba(255, 255, 255, 0.6);
}
.library-tab:hover .tab-icon {
  color: #0f172a;
}
.library-tab[aria-pressed="true"] {
  color: #0f172a;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  font-weight: 800;
}
.library-tab[aria-pressed="true"] .tab-icon {
  color: #1468f3;
}

/* Unified Materials Toolbar */
.materials-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  background: #ffffff;
  box-shadow: 0 4px 18px rgba(12, 28, 56, 0.03);
  margin-bottom: 14px;
}
.search-field {
  flex: 1;
  min-width: 260px;
}
.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}
.search-input-wrap .search-icon {
  position: absolute;
  left: 13px;
  color: #94a3b8;
  font-size: 18px;
  pointer-events: none;
}
.search-input-wrap input {
  width: 100%;
  min-height: 40px;
  padding: 0 34px 0 38px;
  border-radius: 10px;
  border: 1px solid #cbd5e1;
  background: #f8fafc;
  font-size: 13px;
  color: #0f172a;
  font-family: inherit;
  transition: all 0.15s ease;
}
.search-input-wrap input:focus {
  background: #ffffff;
  border-color: #1468f3;
  box-shadow: 0 0 0 3px rgba(20, 104, 243, 0.12);
  outline: none;
}
.search-clear-btn {
  position: absolute;
  right: 10px;
  background: transparent;
  border: 0;
  color: #94a3b8;
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.search-clear-btn:hover {
  color: #0f172a;
}
.toolbar-controls-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.skill-chips, .level-chips {
  display: flex;
  gap: 3px;
  background: #f8fafc;
  padding: 3px;
  border-radius: 9px;
  border: 1px solid #e2e8f0;
}
.filter {
  min-height: 32px;
  padding: 0 11px;
  border-radius: 7px;
  border: 0;
  background: transparent;
  font-size: 11.5px;
  font-weight: 700;
  color: #64748b;
  cursor: pointer;
  transition: all 0.15s ease;
}
.filter:hover {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.04);
}
.filter[aria-pressed="true"] {
  color: #1468f3;
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  font-weight: 800;
}

/* Result summary bar */
.result-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 4px 16px;
  font-size: 12px;
  color: #64748b;
}
.result-count-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
#resourceCount {
  font-weight: 700;
  color: #334155;
}
.active-filter-tags {
  display: inline-flex;
  gap: 6px;
  flex-wrap: wrap;
}
.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 6px;
  background: #eff6ff;
  color: #1468f3;
  font-size: 11px;
  font-weight: 700;
  border: 1px solid #dbeafe;
}
.active-filter-tag button {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: #1468f3;
  cursor: pointer;
  line-height: 1;
}
.reset-filters-btn {
  font-size: 11.5px;
  font-weight: 700;
  color: #ef4444;
  cursor: pointer;
  background: none;
  border: none;
}
.reset-filters-btn:hover {
  text-decoration: underline;
}

/* Resource List Grid */
.resource-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

/* Clean, Psychological Resource Card */
.resource {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 22px 24px;
  box-shadow: 0 4px 18px rgba(12, 28, 56, 0.04);
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}
.resource:hover {
  transform: translateY(-3px);
  border-color: #93c5fd;
  box-shadow: 0 14px 34px rgba(20, 104, 243, 0.08);
}
.resource.is-completed {
  border-color: #86efac;
  border-left: 4px solid #16a34a;
  background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
  box-shadow: 0 4px 16px rgba(22, 163, 74, 0.06);
}

.resource-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  width: 100%;
}
.resource-skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #eff6ff;
  color: #1468f3;
}
.resource-skill-tag .material-symbols-outlined {
  font-size: 15px;
}
.resource-skill-tag.skill-listening {
  background: #e0f2fe;
  color: #0284c7;
}
.resource-skill-tag.skill-writing {
  background: #ecfdf5;
  color: #059669;
}
.resource-skill-tag.skill-speaking {
  background: #fef3c7;
  color: #d97706;
}

.resource-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3.5px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.resource-status-badge .material-symbols-outlined {
  font-size: 15px;
}
.resource-status-badge.free {
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
}
.resource-status-badge.premium {
  background: #fffbeb;
  color: #b45309;
  border: 1px solid #fde68a;
}
.resource-status-badge.completed {
  background: #dcfce7;
  color: #15803d;
  border: 1px solid #86efac;
  font-weight: 800;
  box-shadow: 0 1px 4px rgba(22, 163, 74, 0.12);
}

.resource-title {
  font-size: 19px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 6px;
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.resource-desc {
  font-size: 13px;
  color: #64748b;
  line-height: 1.5;
  margin: 0 0 14px;
}

.resource-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 10px 0;
  border-top: 1px solid #f1f5f9;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 18px;
  font-size: 11.5px;
  font-weight: 700;
  color: #475569;
  width: 100%;
}
.resource-facts span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.resource-facts .material-symbols-outlined {
  font-size: 15px;
  color: #1468f3;
}

/* Card Action Group - Standardized Universal Sizing */
.card-action-group {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: auto;
  align-items: center;
}
.vx-card-btn {
  flex: 1 1 0%;
  height: 42px !important;
  min-height: 42px !important;
  max-height: 42px !important;
  padding: 0 16px !important;
  border-radius: 10px !important;
  font-size: 13px !important;
  font-weight: 700 !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 6px !important;
  text-decoration: none !important;
  cursor: pointer !important;
  transition: all 0.15s ease !important;
  border: 0 !important;
  box-sizing: border-box !important;
  text-align: center !important;
  white-space: nowrap !important;
  line-height: 1 !important;
}
.vx-card-btn.full-width {
  width: 100% !important;
  flex: 1 1 100% !important;
}
.vx-card-btn .material-symbols-outlined {
  font-size: 16px !important;
}
.vx-btn-primary {
  background: #1468f3;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(20, 104, 243, 0.22);
  font-weight: 800;
}
.vx-btn-primary:hover {
  background: #0f54cb;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(20, 104, 243, 0.3);
  color: #ffffff;
}
.vx-btn-secondary {
  background: #ffffff;
  color: #334155;
  border: 1px solid #cbd5e1;
}
.vx-btn-secondary:hover {
  background: #f8fafc;
  border-color: #94a3b8;
  color: #0f172a;
}
.vx-btn-review {
  background: #f1f5f9;
  color: #0f172a;
  border: 1px solid #e2e8f0;
  font-weight: 700;
}
.vx-btn-review:hover {
  background: #e2e8f0;
  color: #0f172a;
}
.vx-btn-unlock {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #fbbf24;
  border: 1px solid #334155;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
}
.vx-btn-unlock:hover {
  background: #020617;
  border-color: #f59e0b;
  color: #fef08a;
  transform: translateY(-1px);
}
.full-width {
  width: 100%;
}

/* ==========================================================================
   Dark Theme for Modern Materials Library
   ========================================================================== */
html[data-theme="dark"] .library-readiness-pill {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .vx-readiness-icon-wrap {
  background: #122747;
  color: #60a5fa;
}
html[data-theme="dark"] .vx-readiness-title {
  color: #f8fafc;
}
html[data-theme="dark"] .vx-readiness-bar-track {
  background: #1e293b;
}
html[data-theme="dark"] .vx-readiness-sub {
  color: #94a3b8;
}
html[data-theme="dark"] .library-tabs {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .library-tab {
  color: #94a3b8;
}
html[data-theme="dark"] .library-tab:hover {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.05);
}
html[data-theme="dark"] .library-tab[aria-pressed="true"] {
  color: #f8fafc;
  background: #1e293b;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
html[data-theme="dark"] .library-tab[aria-pressed="true"] .tab-icon {
  color: #60a5fa;
}
html[data-theme="dark"] .materials-toolbar {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .search-input-wrap input {
  background: #070f1e;
  border-color: #1b2d45;
  color: #f8fafc;
}
html[data-theme="dark"] .search-input-wrap input:focus {
  background: #0b1728;
  border-color: #3b82f6;
}
html[data-theme="dark"] .skill-chips,
html[data-theme="dark"] .level-chips {
  background: #070f1e;
  border-color: #1b2d45;
}
html[data-theme="dark"] .filter {
  color: #94a3b8;
}
html[data-theme="dark"] .filter:hover {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.05);
}
html[data-theme="dark"] .filter[aria-pressed="true"] {
  color: #60a5fa;
  background: #1e293b;
}
html[data-theme="dark"] .resource {
  background: #0b1728;
  border-color: #1b2d45;
}
html[data-theme="dark"] .resource:hover {
  border-color: #3b82f6;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4);
}
html[data-theme="dark"] .resource.is-completed {
  border-color: #166534;
  border-left: 4px solid #22c55e;
  background: linear-gradient(180deg, #091a12 0%, #0b1728 100%);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
html[data-theme="dark"] .resource-status-badge.completed {
  background: #064e3b;
  color: #6ee7b7;
  border-color: #059669;
}
html[data-theme="dark"] .resource-title {
  color: #f8fafc;
}
html[data-theme="dark"] .resource-desc {
  color: #94a3b8;
}
html[data-theme="dark"] .resource-facts {
  border-color: #1b2d45;
  color: #94a3b8;
}
html[data-theme="dark"] .vx-btn-secondary {
  background: #0f172a;
  border-color: #334155;
  color: #e2e8f0;
}
html[data-theme="dark"] .vx-btn-secondary:hover {
  background: #1e293b;
  color: #ffffff;
}
html[data-theme="dark"] .vx-btn-review {
  background: #1e293b;
  border-color: #334155;
  color: #f8fafc;
}
html[data-theme="dark"] .active-filter-tag {
  background: #122747;
  border-color: #1b427d;
  color: #93c5fd;
}
html[data-theme="dark"] .active-filter-tag button {
  color: #93c5fd;
}

@media (max-width: 900px) {
  .resource-list {
    grid-template-columns: 1fr;
  }
  .materials-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .toolbar-controls-wrap {
    flex-direction: column;
    align-items: stretch;
  }
  .skill-chips, .level-chips {
    overflow-x: auto;
  }
}

/* Complete ad & promotion suppression for Premium candidates */
body.user-is-premium .vx-top-notification-banner,
html.user-is-premium .vx-top-notification-banner,
body.user-is-premium .vx-hero-banner-card,
html.user-is-premium .vx-hero-banner-card,
body.user-is-premium .member-sidebar-pro-card,
html.user-is-premium .member-sidebar-pro-card,
body.user-is-premium .upgrade-banner,
html.user-is-premium .upgrade-banner,
body.user-is-premium .vx-hero-unlock-btn,
body.user-is-premium #sidebarUpgradeBtn {
  display: none !important;
}








.app-mark-red {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: #E31837 !important;
  color: #ffffff !important;
  font-family: Arial, sans-serif !important;
  font-weight: 900 !important;
  font-size: 16px !important;
  border-radius: 6px !important;
  margin-right: 8px;
  letter-spacing: 0;
}

.app-mark img {
  /* Turn original logo into Official IELTS Red (#E31837) */
  filter: brightness(0) saturate(100%) invert(18%) sepia(85%) saturate(5451%) hue-rotate(346deg) brightness(97%) contrast(98%) !important;
  transform: scale(1.15); /* Make it slightly bigger and bolder */
}

/* ==========================================================================
   BRITISH HARMONY: BLUE (Brand) + RED (Action) + WHITE (Space)
   ========================================================================== */
.app-header,
.premium-product-page .app-header,
.v4-public-page .app-header {
  position: sticky;
  top: 0 !important;
  z-index: 100;
  width: 100% !important;
  max-width: 100% !important;
  min-height: 80px !important;
  margin: 0 !important;
  padding: 0 5% !important;
  background: #ffffff !important;
  border-bottom: 1px solid #eaeaea !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
}

.app-header .app-brand { color: #0f172a !important; font-weight: 900 !important; font-size: 20px !important; letter-spacing: -0.03em !important; }
.app-header .app-brand-badge { background: #E31837 !important; color: #ffffff !important; border: none !important; font-weight: 800 !important; }
.app-header .app-nav a { color: #0f172a !important; font-weight: 700 !important; font-size: 14px !important; text-transform: uppercase; letter-spacing: 0.02em; }
.app-header .app-nav a:hover, .app-header .app-nav a[aria-current="page"] { color: #1468f3 !important; background: transparent !important; }
.app-header .plain-link { color: #0f172a !important; font-weight: 700 !important; text-transform: uppercase; font-size: 14px !important; }
.app-header .plain-link:hover { color: #1468f3 !important; background: transparent !important; }
.app-header .theme-toggle { display: none !important; }

/* The Logo stays original Blue, but let's just restore any filter so it's original */
.app-mark img {
  filter: none !important;
  transform: scale(1.1);
}

/* Bold Action Buttons - RED */
.app-header .button.primary,
.v4-public-page .button.primary,
.v4-actions .button.primary {
  background: #E31837 !important;
  color: #ffffff !important;
  border-radius: 4px !important;
  font-weight: 800 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: none !important;
  border: none !important;
}
.app-header .button.primary:hover,
.v4-public-page .button.primary:hover,
.v4-actions .button.primary:hover {
  background: #bd102a !important;
  transform: translateY(-1px) !important;
}

/* Secondary Action Buttons - BLUE */
.v4-actions .button.secondary {
  background: #ffffff !important;
  color: #1468f3 !important;
  border: 2px solid #1468f3 !important;
  border-radius: 4px !important;
  font-weight: 800 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.v4-actions .button.secondary:hover {
  background: #f0f6ff !important;
}

/* Hero Section */
.v4-hero {
  position: relative !important;
  padding: 100px 0 120px !important;
  overflow: hidden !important;
  background: #ffffff !important;
}
.v4-hero-glow { display: none !important; }

.v4-hero-copy h1 {
  color: #0f172a !important; /* Deep Navy */
  font-family: system-ui, -apple-system, sans-serif !important;
  font-weight: 900 !important;
  font-size: clamp(42px, 5vw, 64px) !important;
  letter-spacing: -0.04em !important;
  line-height: 1.05 !important;
  text-transform: none !important;
}

.v4-hero-subtitle {
  color: #475569 !important;
  font-size: 18px !important;
  font-weight: 500 !important;
  line-height: 1.6 !important;
  margin-top: 24px !important;
}

/* Blue gradient text for the word 'Band 8.0+' */
.v4-hero-gradient {
  color: #1468f3 !important;
  background: none !important;
  -webkit-text-fill-color: #1468f3 !important;
}

.v4-trust-item, .v4-trust-item span { color: #0f172a !important; font-weight: 700 !important; }
.v4-trust-item .material-symbols-outlined { color: #E31837 !important; }

/* Small blue badge above heading */
.v4-hero-badge {
  color: #1468f3 !important;
  background: rgba(20, 104, 243, 0.1) !important;
  border: 1px solid rgba(20, 104, 243, 0.2) !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.1em !important;
  font-size: 11px !important;
  border-radius: 4px !important;
}
.v4-badge-pulse { background: #1468f3 !important; box-shadow: none !important; animation: none !important; }

/* Clean Showcase */
.v4-hero-showcase {
  border: 1px solid #eaeaea !important;
  box-shadow: 0 20px 40px rgba(0,0,0,0.08) !important;
  background: #ffffff !important;
  border-radius: 8px !important;
}
.v4-mock-topbar {
  background: #0f172a !important;
  border-bottom: none !important;
  border-radius: 8px 8px 0 0 !important;
}
.v4-mock-tab.active { color: #ffffff !important; border-bottom: 2px solid #E31837 !important; }
.v4-mock-score-float {
  background: #0f172a !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 6px !important;
}
.v4-mock-score-float .material-symbols-outlined { color: #4ade80 !important; }