/* ============================================================================
   W.H. Academy — Component Library
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target-min);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  font: var(--type-button-lg);
  border: 2px solid transparent;
  transition: transform var(--motion-quick) var(--ease-out), background-color var(--motion-quick) var(--ease-out), opacity var(--motion-quick) var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.btn--sm { min-height: 36px; padding: var(--space-2) var(--space-4); font: var(--type-button-md); }
.btn--lg { min-height: 52px; padding: var(--space-4) var(--space-6); }
.btn--full { width: 100%; }

.btn--primary { background: var(--color-brand-ink); color: #fff; }
.btn--primary:hover { background: var(--color-brand-ink-light); }
[data-theme="dark"] .btn--primary { background: var(--color-interactive); color: var(--neutral-950); }
[data-theme="dark"] .btn--primary:hover { background: var(--color-interactive-hover); }

.btn--secondary { background: transparent; border-color: var(--color-brand-ink); color: var(--color-brand-ink); }
.btn--secondary:hover { background: var(--color-brand-ink-tint); }
[data-theme="dark"] .btn--secondary { border-color: var(--color-interactive); color: var(--color-interactive); }
[data-theme="dark"] .btn--secondary:hover { background: var(--color-info-surface); }

.btn--tertiary { background: transparent; color: var(--color-brand-ink); padding-inline: var(--space-2); }
.btn--tertiary:hover { text-decoration: underline; }
[data-theme="dark"] .btn--tertiary { color: var(--color-interactive); }

.btn--destructive { background: var(--color-error); color: #fff; }
.btn--destructive:hover { filter: brightness(0.92); }

.btn--subject { background: var(--subject-accent, var(--color-brand-ink)); color: #fff; }

.btn--icon { padding: var(--space-2); border-radius: var(--radius-pill); min-width: var(--touch-target-min); }
.btn--icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; }

.btn__spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 700ms linear infinite; }
.btn[data-loading="true"] .btn__label { opacity: 0; }
.btn[data-loading="true"] { position: relative; }
.btn[data-loading="true"] .btn__spinner { position: absolute; }

/* ---- Cards ---- */
.card {
  background: var(--color-bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-card);
  padding: var(--space-4);
  transition: box-shadow var(--motion-quick) var(--ease-out), transform var(--motion-quick) var(--ease-out);
}
.card--interactive { cursor: pointer; }
.card--interactive:hover, .card--interactive:focus-visible { box-shadow: var(--elevation-raised); transform: translateY(-1px); }

.card--nav { border-left: 4px solid var(--subject-accent, var(--color-brand-ink)); display: flex; align-items: center; gap: var(--space-4); }
.card--nav__icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--subject-accent-tint, var(--color-brand-ink-tint)); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.card--nav__icon svg { width: 24px; height: 24px; stroke: var(--subject-accent, var(--color-brand-ink)); fill: none; }
.card--nav__body { flex: 1; min-width: 0; }
.card--nav__title { font: var(--type-h4); margin-bottom: 2px; }
.card--nav__meta { font: var(--type-body-sm); color: var(--color-text-secondary); }

.card--question { padding: var(--space-5); }
.card--stat { text-align: center; padding: var(--space-5); }
.card--stat__value { font: var(--type-h1); color: var(--color-brand-ink); display: block; }
[data-theme="dark"] .card--stat__value { color: var(--color-interactive); }
.card--stat__label { font: var(--type-caption); }

/* ---- Progress bar ---- */
.progress-bar { width: 100%; height: 8px; border-radius: var(--radius-pill); background: var(--neutral-200); overflow: hidden; }
[data-theme="dark"] .progress-bar { background: var(--color-border); }
.progress-bar__fill { height: 100%; background: var(--color-brand-ink); border-radius: var(--radius-pill); transition: width var(--motion-deliberate) var(--ease-out); }
[data-theme="dark"] .progress-bar__fill { background: var(--color-interactive); }

/* ---- Circular progress ring ---- */
.progress-ring { transform: rotate(-90deg); }
.progress-ring__bg { stroke: var(--neutral-200); }
.progress-ring__fill { stroke: var(--color-brand-ink); transition: stroke-dashoffset var(--motion-deliberate) var(--ease-out); stroke-linecap: round; }
[data-theme="dark"] .progress-ring__fill { stroke: var(--color-interactive); }

/* ---- Badges / Chips / Pills ---- */
.badge { display: inline-flex; align-items: center; gap: var(--space-1); padding: 2px var(--space-3); border-radius: var(--radius-xs); font: var(--type-caption); }
.badge--success { background: var(--color-success-surface); color: var(--color-success); }
.badge--error { background: var(--color-error-surface); color: var(--color-error); }
.badge--warning { background: var(--color-warning-surface); color: var(--color-warning); }
.badge--info { background: var(--color-info-surface); color: var(--color-info); }
.badge--neutral { background: var(--neutral-100); color: var(--color-text-secondary); }

.chip {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  font: var(--type-body-sm);
  min-height: var(--touch-target-min);
  background: var(--color-bg-surface);
}
.chip[aria-pressed="true"] { background: var(--color-brand-ink); border-color: var(--color-brand-ink); color: #fff; }

/* ---- Inputs ---- */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field__label { font: var(--type-body-sm); font-weight: 700; }
.field__hint { font: var(--type-caption); text-transform: none; letter-spacing: normal; }
.field__error { font: var(--type-body-sm); color: var(--color-error); display: flex; align-items: center; gap: var(--space-1); }

.input, .select, .textarea {
  min-height: var(--touch-target-min);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font: var(--type-body-md);
  width: 100%;
  transition: border-color var(--motion-quick) var(--ease-out);
}
.input::placeholder, .textarea::placeholder { color: var(--color-text-placeholder); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { border-color: var(--color-brand-ink); }
[data-theme="dark"] .input:focus-visible, [data-theme="dark"] .select:focus-visible { border-color: var(--color-interactive); }
.input[aria-invalid="true"], .textarea[aria-invalid="true"] { border-color: var(--color-error); }
.input--otp { text-align: center; font: var(--type-h2); letter-spacing: 0.3em; font-family: var(--font-mono); }
.input--pin { text-align: center; font: var(--type-h2); letter-spacing: 0.4em; font-family: var(--font-mono); }

.checkbox-row { display: flex; align-items: flex-start; gap: var(--space-3); }
.checkbox-row input[type="checkbox"] { width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--color-brand-ink); margin-top: 2px; }

/* ---- Toggle switch ---- */
.toggle { position: relative; display: inline-flex; align-items: center; width: 48px; height: 28px; }
.toggle input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.toggle__track { position: absolute; inset: 0; background: var(--neutral-300); border-radius: var(--radius-pill); transition: background var(--motion-quick) var(--ease-out); }
.toggle__thumb { position: absolute; top: 2px; left: 2px; width: 24px; height: 24px; background: #fff; border-radius: 50%; box-shadow: var(--elevation-card); transition: transform var(--motion-quick) var(--ease-out); }
.toggle input:checked + .toggle__track { background: var(--color-brand-ink); }
[data-theme="dark"] .toggle input:checked + .toggle__track { background: var(--color-interactive); }
.toggle input:checked ~ .toggle__thumb { transform: translateX(20px); }

/* ---- Tabs ---- */
.tabs { display: flex; border-bottom: 1px solid var(--color-border); overflow-x: auto; }
.tab {
  padding: var(--space-3) var(--space-4);
  font: var(--type-body-md); font-weight: 700;
  color: var(--color-text-secondary);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  min-height: var(--touch-target-min);
}
.tab[aria-selected="true"] { color: var(--color-brand-ink); border-bottom-color: var(--color-brand-ink); }
[data-theme="dark"] .tab[aria-selected="true"] { color: var(--color-interactive); border-bottom-color: var(--color-interactive); }

/* ---- Dialog / Modal ---- */
.dialog-backdrop {
  position: fixed; inset: 0;
  background: rgba(18,26,42,0.48);
  z-index: var(--z-overlay-backdrop);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--motion-deliberate) var(--ease-out);
}
.dialog-backdrop[data-open="true"] { opacity: 1; }
.dialog {
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--elevation-overlay);
  max-width: 480px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  padding: var(--space-6);
  z-index: var(--z-dialog);
  transform: translateY(12px) scale(0.98);
  opacity: 0;
  transition: transform var(--motion-deliberate) var(--ease-out), opacity var(--motion-deliberate) var(--ease-out);
}
.dialog-backdrop[data-open="true"] .dialog { transform: translateY(0) scale(1); opacity: 1; }
.dialog__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-4); }
.dialog__close { flex-shrink: 0; }
.dialog__actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); justify-content: flex-end; }
@media (max-width: 639px) {
  .dialog__actions { flex-direction: column-reverse; }
  .dialog__actions .btn { width: 100%; }
}

/* ---- Bottom sheet (mobile) ---- */
.bottom-sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--elevation-overlay);
  padding: var(--space-5);
  padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  z-index: var(--z-dialog);
  transform: translateY(100%);
  transition: transform var(--motion-deliberate) var(--ease-out);
  max-height: 85vh; overflow-y: auto;
}
.bottom-sheet[data-open="true"] { transform: translateY(0); }
.bottom-sheet__handle { width: 40px; height: 4px; border-radius: var(--radius-pill); background: var(--color-border-strong); margin: 0 auto var(--space-4); }

/* ---- Toast ---- */
.toast-region {
  position: fixed;
  top: var(--space-4);
  left: 50%; transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: var(--space-2);
  width: min(400px, calc(100vw - var(--space-8)));
}
@media (max-width: 639px) {
  .toast-region { bottom: calc(var(--space-9) + env(safe-area-inset-bottom, 0px)); top: auto; }
}
.toast {
  display: flex; align-items: center; gap: var(--space-3);
  background: var(--neutral-800);
  color: #fff;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-floating);
  animation: toast-in var(--motion-deliberate) var(--ease-out);
}
[data-theme="dark"] .toast { background: var(--color-bg-surface); border: 1px solid var(--color-border); }
.toast[data-leaving="true"] { animation: toast-out var(--motion-quick) var(--ease-in) forwards; }
.toast__icon { width: 20px; height: 20px; flex-shrink: 0; }
.toast__message { flex: 1; font: var(--type-body-sm); color: inherit; }
.toast--success .toast__icon { color: #6FBF83; }
.toast--error .toast__icon { color: #E5677B; }
.toast--info .toast__icon { color: #7398D0; }

/* ---- Tooltip ---- */
.tooltip { position: relative; }
.tooltip__bubble {
  position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: var(--neutral-800); color: #fff;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font: var(--type-caption); text-transform: none; letter-spacing: normal;
  white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity var(--motion-instant) var(--ease-out);
  z-index: var(--z-dropdown);
}
.tooltip:hover .tooltip__bubble, .tooltip:focus-within .tooltip__bubble { opacity: 1; }

/* ---- Skeleton loader ---- */
.skeleton { background: linear-gradient(90deg, var(--neutral-100) 25%, var(--neutral-200) 37%, var(--neutral-100) 63%); background-size: 400% 100%; border-radius: var(--radius-sm); animation: skeleton-shimmer 1.4s ease infinite; }
[data-theme="dark"] .skeleton { background: linear-gradient(90deg, #1B2438 25%, #232F48 37%, #1B2438 63%); background-size: 400% 100%; }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; background: var(--neutral-100); } }
.skeleton--text { height: 16px; margin-bottom: var(--space-2); }
.skeleton--title { height: 24px; width: 60%; margin-bottom: var(--space-3); }
.skeleton--card { height: 88px; }
.skeleton--avatar { width: 44px; height: 44px; border-radius: 50%; }

/* ---- Empty state ---- */
.empty-state { text-align: center; padding: var(--space-9) var(--space-4); color: var(--color-text-secondary); }
.empty-state__icon { width: 56px; height: 56px; margin: 0 auto var(--space-4); stroke: var(--color-border-strong); fill: none; }
.empty-state__title { font: var(--type-h4); color: var(--color-text-primary); margin-bottom: var(--space-2); }
.empty-state__action { margin-top: var(--space-5); }

/* ---- Error state ---- */
.error-state { text-align: center; padding: var(--space-9) var(--space-4); }
.error-state__icon { width: 56px; height: 56px; margin: 0 auto var(--space-4); stroke: var(--color-error); fill: none; }
.error-state__title { font: var(--type-h3); margin-bottom: var(--space-2); }
.error-state__message { color: var(--color-text-secondary); max-width: 48ch; margin-inline: auto; }
.error-state__actions { margin-top: var(--space-5); display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ---- Loading screen ---- */
.loading-screen {
  position: fixed; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-4);
  background: var(--color-bg-app);
  z-index: 2000;
}
.loading-screen__mark { font-family: var(--font-display); font-size: 32px; color: var(--color-brand-ink); letter-spacing: 0.02em; }
[data-theme="dark"] .loading-screen__mark { color: var(--color-interactive); }
.loading-spinner { width: 32px; height: 32px; border: 3px solid var(--color-border); border-top-color: var(--color-brand-ink); border-radius: 50%; animation: spin 700ms linear infinite; }
[data-theme="dark"] .loading-spinner { border-top-color: var(--color-interactive); }
@media (prefers-reduced-motion: reduce) { .loading-spinner { animation: spin 1400ms linear infinite; } }

/* ---- Avatar ---- */
.avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--color-brand-ink-tint); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--color-brand-ink); flex-shrink: 0; overflow: hidden; }
[data-theme="dark"] .avatar { background: var(--color-info-surface); color: var(--color-interactive); }
.avatar--lg { width: 64px; height: 64px; font-size: 22px; }

/* ---- Achievement / Certificate card ---- */
.achievement-card { text-align: center; padding: var(--space-4); border-radius: var(--radius-md); background: var(--color-bg-surface); box-shadow: var(--elevation-card); }
.achievement-card[data-locked="true"] { opacity: 0.55; filter: grayscale(1); }
.achievement-card__icon { width: 48px; height: 48px; margin: 0 auto var(--space-3); }
.achievement-card__title { font: var(--type-body-sm); font-weight: 700; }
.achievement-card__criteria { font: var(--type-caption); text-transform: none; letter-spacing: normal; }

/* ---- Streak flame ---- */
.streak-badge { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); border-radius: var(--radius-pill); background: var(--color-warning-surface); color: var(--color-warning); font-weight: 700; }
.streak-badge svg { width: 18px; height: 18px; }

/* ---- Table (responsive collapse) ---- */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: left; font: var(--type-caption); padding: var(--space-3); border-bottom: 2px solid var(--color-border); }
.data-table td { padding: var(--space-3); border-bottom: 1px solid var(--color-border); font: var(--type-body-sm); }
@media (max-width: 639px) {
  .data-table thead { display: none; }
  .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
  .data-table tr { margin-bottom: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-3); }
  .data-table td { border: none; padding: var(--space-1) 0; }
  .data-table td::before { content: attr(data-label); font-weight: 700; display: inline-block; min-width: 100px; }
}

/* ============================================================================
   GLASSMORPHISM + BRAND POLISH — added when the platform was rethemed to
   match the main W.H. Academy website. Frosted cards, gradient primary
   buttons, and the site's signature indigo glow.
   ========================================================================== */

.card,
.achievement-card,
.dialog,
.bottom-sheet {
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.85);
}
[data-theme="dark"] .card,
[data-theme="dark"] .achievement-card,
[data-theme="dark"] .dialog,
[data-theme="dark"] .bottom-sheet {
  border-color: var(--color-border);
}

.top-bar,
.sidebar {
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  background: rgba(255, 255, 255, 0.82);
}
[data-theme="dark"] .top-bar,
[data-theme="dark"] .sidebar {
  background: rgba(30, 27, 75, 0.82);
}

/* Primary button — the main site's indigo gradient + glow */
.btn--primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.42);
  border: none;
}
.btn--primary:hover {
  background: linear-gradient(135deg, #4f46e5, #3730a3);
  box-shadow: 0 8px 26px rgba(99, 102, 241, 0.52);
  transform: translateY(-1px);
}
[data-theme="dark"] .btn--primary { color: #fff; }

.btn--secondary {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(79, 70, 229, 0.35);
  color: var(--color-brand-ink);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--color-interactive);
}
[data-theme="dark"] .btn--secondary { background: rgba(129,140,248,0.08); }

/* Stat cards — the site's gradient numerals */
.card--stat__value {
  background: linear-gradient(135deg, #4f46e5, #0ea5e9);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}
[data-theme="dark"] .card--stat__value {
  background: linear-gradient(135deg, #818cf8, #38bdf8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Progress bar — gradient fill */
.progress-bar__fill {
  background: linear-gradient(90deg, #4f46e5, #0ea5e9);
}

/* Streak badge — the site's amber accent */
.streak-badge {
  background: linear-gradient(135deg, rgba(245,158,11,0.16), rgba(236,72,153,0.12));
  color: #b45309;
  border: 1px solid rgba(245, 158, 11, 0.28);
}

/* Recommendation / hero card — soft indigo wash */
#recommendation-card {
  background: linear-gradient(135deg, rgba(99,102,241,0.10), rgba(14,165,233,0.07));
  border: 1px solid rgba(79, 70, 229, 0.16);
}

/* Toast — light, on-brand, not near-black */
.toast {
  background: rgba(255, 255, 255, 0.94);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
[data-theme="dark"] .toast {
  background: rgba(30, 27, 75, 0.94);
  color: var(--color-text-primary);
}
.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon { color: var(--color-error); }
.toast--info .toast__icon { color: var(--color-interactive); }

/* Tooltip — match the toast's light treatment */
.tooltip__bubble {
  background: var(--neutral-950);
  color: #fff;
}

/* Section headings use the site's Playfair display face */
h1, h2 { letter-spacing: -0.015em; }
.section-display {
  font-family: var(--font-display);
  font-weight: 700;
}

/* Inputs — soft, glassy, indigo focus */
.input, .select, .textarea {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(55, 48, 163, 0.14);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.input:focus-visible, .select:focus-visible, .textarea:focus-visible {
  border-color: var(--color-interactive);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}
[data-theme="dark"] .input,
[data-theme="dark"] .select,
[data-theme="dark"] .textarea { background: rgba(30,27,75,0.55); }

/* Chip selected state */
.chip[aria-pressed="true"] {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  border-color: transparent;
  color: #fff;
}

/* Skeleton — light indigo shimmer, not grey */
.skeleton {
  background: linear-gradient(90deg, #e8ecff 25%, #f4f6ff 37%, #e8ecff 63%);
  background-size: 400% 100%;
}

/* ============================================================================
   My Subjects — gradient subject cards + colourful chapter list (dashboard).
   Per-subject colours come from inline vars --sc-primary / --sc-secondary.
   No color-mix() so it renders on every browser: depth comes from a diagonal
   light->dark overlay laid over the solid subject colour.
   ========================================================================== */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-4);
}
.subject-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-5) var(--space-4);
  border: none;
  border-radius: var(--radius-lg, 16px);
  cursor: pointer;
  text-align: left;
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(0, 0, 0, 0.24)), var(--sc-primary, #4f46e5);
  box-shadow: 0 10px 26px rgba(17, 24, 39, 0.16);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  overflow: hidden;
}
.subject-card::after {
  content: "";
  position: absolute;
  right: -30px; top: -30px;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}
.subject-card:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(17, 24, 39, 0.24); }
.subject-card__name { font-size: 1.15rem; font-weight: 800; line-height: 1.2; position: relative; }
.subject-card__count { font-size: 0.8rem; opacity: 0.92; position: relative; }
.subject-card__go { margin-top: var(--space-3); font-size: 0.82rem; font-weight: 700; opacity: 0.95; position: relative; }

.subject-chapters__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg, 16px);
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(0, 0, 0, 0.24)), var(--sc-primary, #4f46e5);
}
.subject-chapters__title { margin: 0; color: #fff; }
.subject-chapters__count { font-size: 0.82rem; opacity: 0.92; }

.chapter-list { display: flex; flex-direction: column; gap: var(--space-2); }
.chapter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md, 12px);
  border-left: 4px solid var(--sc-primary, #4f46e5);
  background: var(--sc-secondary, #eef2ff);
}
[data-theme="dark"] .chapter-item { background: rgba(255, 255, 255, 0.05); }
.chapter-item__label { font-weight: 600; flex: 1 1 12rem; }
.chapter-item__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }