/* Raj Exam Papers — light/dark theme layer. Base dark styles remain untouched. */

html[data-theme="dark"] {
  color-scheme: dark;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f7fb;
  --bg-soft: #eef3f9;
  --surface: rgba(255, 255, 255, .84);
  --surface-strong: #ffffff;
  --text: #172033;
  --muted: #5f6f86;
  --line: rgba(15, 23, 42, .12);
  --shadow: 0 24px 72px rgba(15, 23, 42, .12);
}

html[data-theme="light"] body {
  color: var(--text);
  background:
    radial-gradient(circle at 0 0, rgba(124, 58, 237, .12), transparent 34rem),
    radial-gradient(circle at 100% 0, rgba(37, 99, 235, .10), transparent 32rem),
    radial-gradient(circle at 52% 100%, rgba(124, 58, 237, .06), transparent 36rem),
    linear-gradient(180deg, #fbfcff 0%, #f4f7fb 48%, #eef3f9 100%);
}

html[data-theme="light"] body::before {
  opacity: .46;
  background-image:
    linear-gradient(rgba(15, 23, 42, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, .025) 1px, transparent 1px);
}

html[data-theme="light"] ::selection {
  color: #fff;
  background: rgba(109, 40, 217, .72);
}

/* Theme switch */
.theme-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--text);
  background: rgba(255, 255, 255, .07);
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}

html.js .theme-toggle { display: grid; }
.theme-toggle:hover { transform: translateY(-1px); background: rgba(255, 255, 255, .11); }
.theme-toggle:focus-visible { outline: 3px solid rgba(96, 165, 250, .38); outline-offset: 2px; }
.theme-toggle svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.theme-icon-sun, .theme-icon-moon { display: none; }
html[data-theme="dark"] .theme-icon-sun { display: block; }
html[data-theme="light"] .theme-icon-moon { display: block; }

html[data-theme="light"] .theme-toggle {
  color: #334155;
  background: rgba(255, 255, 255, .9);
  border-color: rgba(15, 23, 42, .12);
  box-shadow: 0 8px 24px rgba(15, 23, 42, .08);
}
html[data-theme="light"] .theme-toggle:hover { background: #fff; }

/* Header and navigation */
html[data-theme="light"] .site-header {
  background: linear-gradient(180deg, rgba(245, 247, 251, .98), rgba(245, 247, 251, .88), transparent);
}
html[data-theme="light"] .nav-shell {
  background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(255,255,255,.76));
  box-shadow: 0 18px 54px rgba(15, 23, 42, .10);
}
html[data-theme="light"] .desktop-nav {
  border-color: rgba(15, 23, 42, .08);
  background: rgba(15, 23, 42, .035);
}
html[data-theme="light"] .desktop-nav a:hover,
html[data-theme="light"] .desktop-nav a[aria-current="page"] {
  color: #172033;
  background: rgba(15, 23, 42, .07);
}
html[data-theme="light"] .menu-toggle {
  background: rgba(15, 23, 42, .045);
}
html[data-theme="light"] .mobile-nav {
  background: rgba(255,255,255,.98);
  box-shadow: var(--shadow);
}
html[data-theme="light"] .mobile-nav a:hover { background: rgba(15, 23, 42, .055); }

/* Buttons */
html[data-theme="light"] .btn:not(.btn-primary) {
  color: #263247;
  background: rgba(255,255,255,.88);
  border-color: rgba(15,23,42,.12);
}
html[data-theme="light"] .btn-secondary { background: rgba(255,255,255,.88); }
html[data-theme="light"] .btn-primary { color: #fff; }
html[data-theme="light"] .btn:hover { box-shadow: 0 14px 38px rgba(15, 23, 42, .12); }

/* Home content */
html[data-theme="light"] .eyebrow,
html[data-theme="light"] .hero-badge { color: #5b21b6; }
html[data-theme="light"] .hero-badge { background: rgba(109,40,217,.07); }
html[data-theme="light"] .gradient-text {
  background: linear-gradient(135deg, #4c1d95, #6d28d9 42%, #2563eb 78%, #0369a1);
  -webkit-background-clip: text;
  background-clip: text;
}
html[data-theme="light"] .lead { color: #52627a; }
html[data-theme="light"] .stat,
html[data-theme="light"] .hero-visual { background: rgba(255,255,255,.78); }
html[data-theme="light"] .hero-slide-stage {
  background: #e8edf5;
  box-shadow: inset 0 0 0 1px rgba(15,23,42,.08);
}
html[data-theme="light"] .section-head .eyebrow { color: #6d28d9; }
html[data-theme="light"] .card:hover { box-shadow: 0 22px 56px rgba(15,23,42,.12); }
html[data-theme="light"] .feature-card::after,
html[data-theme="light"] .contact-card a { color: #1d4ed8; }
html[data-theme="light"] .feature-icon { border-color: rgba(15,23,42,.10); }
html[data-theme="light"] .check-list li {
  color: #29364a;
  background: rgba(255,255,255,.78);
}
html[data-theme="light"] .cta {
  background: linear-gradient(135deg, rgba(124,58,237,.10), rgba(37,99,235,.08)), rgba(255,255,255,.86);
}

/* Route / legal pages */
html[data-theme="light"] .toc,
html[data-theme="light"] .content-card {
  background: rgba(255,255,255,.86);
  box-shadow: 0 12px 36px rgba(15,23,42,.055);
}
html[data-theme="light"] .toc a:hover {
  color: #172033;
  background: rgba(15,23,42,.055);
}
html[data-theme="light"] .content-card p,
html[data-theme="light"] .content-card li { color: #46566d; }
html[data-theme="light"] .notice {
  color: #1e3a5f;
  background: rgba(37,99,235,.075);
}
html[data-theme="light"] .form-shell {
  background:
    radial-gradient(circle at 0 0, rgba(124,58,237,.09), transparent 28rem),
    radial-gradient(circle at 100% 0, rgba(37,99,235,.08), transparent 26rem),
    linear-gradient(180deg, rgba(255,255,255,.98), rgba(246,249,253,.99));
  box-shadow: 0 24px 64px rgba(15,23,42,.10);
}
html[data-theme="light"] .form-toolbar {
  border-color: rgba(15,23,42,.10);
  background: linear-gradient(135deg, rgba(124,58,237,.07), rgba(37,99,235,.05)), rgba(255,255,255,.82);
}
html[data-theme="light"] .form-toolbar p { color: #5b6c83; }

/* Footer */
html[data-theme="light"] .footer-links a {
  color: #29364a;
  background: rgba(255,255,255,.78);
}

/* Feature dialog */
html[data-theme="light"] .feature-info-dialog {
  color: #172033;
  border-color: rgba(15,23,42,.12);
  background:
    radial-gradient(circle at 100% 0, rgba(37,99,235,.10), transparent 19rem),
    linear-gradient(180deg, #ffffff, #f4f7fb 65%, #eef3f9);
  box-shadow: 0 36px 100px rgba(15,23,42,.24);
}
html[data-theme="light"] .feature-info-dialog::backdrop { background: rgba(15,23,42,.42); }
html[data-theme="light"] .feature-dialog-close {
  color: #172033;
  border-color: rgba(15,23,42,.12);
  background: rgba(15,23,42,.05);
}
html[data-theme="light"] .feature-dialog-icon { border-color: rgba(15,23,42,.11); }
html[data-theme="light"] .feature-dialog-summary { color: #52627a; }
html[data-theme="light"] .feature-dialog-list li {
  color: #405169;
  border-color: rgba(15,23,42,.10);
  background: rgba(255,255,255,.82);
}
html[data-theme="light"] .feature-dialog-list li::before { color: #1d4ed8; }

/* SEO pages */
html[data-theme="light"] .seo-breadcrumb a { color: #1d4ed8; }
html[data-theme="light"] .seo-breadcrumb a:hover { color: #172033; }
html[data-theme="light"] .seo-breadcrumb-sep { color: rgba(15,23,42,.38); }
html[data-theme="light"] .seo-exam-card,
html[data-theme="light"] .seo-faq details,
html[data-theme="light"] .paper-year-group,
html[data-theme="light"] .paper-stats > div {
  background: rgba(255,255,255,.84);
}
html[data-theme="light"] .seo-exam-card:hover { background: #fff; }
html[data-theme="light"] .seo-exam-card strong,
html[data-theme="light"] .seo-faq summary,
html[data-theme="light"] .content-card strong { color: #172033; }
html[data-theme="light"] .seo-faq p { color: #46566d; }
html[data-theme="light"] .seo-disclaimer {
  color: #64748b;
  border-color: rgba(15,23,42,.10);
  background: rgba(255,255,255,.64);
}
html[data-theme="light"] .content-card a:not(.btn):not(.link-card):not(.seo-exam-card) {
  color: #1d4ed8;
  text-decoration-color: rgba(29,78,216,.35);
}
html[data-theme="light"] .paper-inventory-list li { background: rgba(15,23,42,.035); }
html[data-theme="light"] .paper-inventory-list li span { color: #29364a; }
html[data-theme="light"] .paper-inventory-list li strong { color: #1d4ed8; }

/* REET page-specific styles */
html[data-theme="light"] .reet-summary-card,
html[data-theme="light"] .reet-year-block,
html[data-theme="light"] .reet-info-box,
html[data-theme="light"] .reet-source-list a {
  background: rgba(255,255,255,.84) !important;
}
html[data-theme="light"] .reet-summary-card strong,
html[data-theme="light"] .reet-year-head h3,
html[data-theme="light"] .reet-table strong,
html[data-theme="light"] .reet-table caption { color: #172033 !important; }
html[data-theme="light"] .reet-year-date,
html[data-theme="light"] .reet-source-list a { color: #1d4ed8 !important; }
html[data-theme="light"] .reet-table th {
  color: #334155 !important;
  background: rgba(15,23,42,.045) !important;
}
html[data-theme="light"] .reet-table td,
html[data-theme="light"] .reet-info-box p { color: #46566d !important; }
html[data-theme="light"] .reet-note {
  color: #1e3a5f !important;
  background: rgba(96,165,250,.09) !important;
}
html[data-theme="light"] .reet-table caption { background: rgba(15,23,42,.035) !important; }

/* Keep branded purple hero cards readable in both themes. */
html[data-theme="light"] .page-hero-card,
html[data-theme="light"] .page-hero-card h1,
html[data-theme="light"] .page-hero-card .eyebrow,
html[data-theme="light"] .page-hero-card .meta-pill { color: #fff; }
html[data-theme="light"] .page-hero-card p { color: #eef2ff; }

@media (prefers-reduced-motion: reduce) {
  .theme-toggle { transition: none; }
}

/* PYQ DEEP LINK BUTTONS */
.paper-inventory-list li.paper-linked-item {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 10px 16px;
  align-items: center;
}
.paper-inventory-list li.paper-linked-item > span {
  align-self: center;
}
.paper-inventory-list li.paper-linked-item > strong {
  justify-self: end;
}
.paper-link-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 2px;
}
.paper-deep-link {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 12.5px;
  font-weight: 850;
  line-height: 1;
  text-decoration: none !important;
  white-space: nowrap;
  transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
  -webkit-tap-highlight-color: transparent;
}
.paper-deep-link svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.paper-deep-link:hover {
  transform: translateY(-1px);
}
.paper-deep-link:focus-visible {
  outline: 3px solid rgba(96,165,250,.42);
  outline-offset: 2px;
}
.paper-deep-link--pdf {
  color: #fecaca !important;
  border-color: rgba(248,113,113,.28);
  background: linear-gradient(180deg, rgba(239,68,68,.14), rgba(239,68,68,.08));
}
.paper-deep-link--pdf:hover {
  border-color: rgba(248,113,113,.46);
  background: linear-gradient(180deg, rgba(239,68,68,.20), rgba(239,68,68,.11));
  box-shadow: 0 10px 28px rgba(127,29,29,.14);
}
.paper-deep-link--attempt {
  color: #fff !important;
  border-color: rgba(124,58,237,.35);
  background: linear-gradient(135deg, #7c3aed, #5b21b6 52%, #2563eb);
  box-shadow: 0 8px 24px rgba(78,25,159,.20);
}
.paper-deep-link--attempt:hover {
  box-shadow: 0 12px 30px rgba(78,25,159,.30);
}
.reet-paper-links {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.reet-paper-links-title {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.reet-paper-link-list {
  display: grid;
  gap: 8px;
}
.reet-paper-link-row {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.035);
}
.reet-paper-link-name {
  min-width: 0;
  color: #eaf2ff;
  font-size: 13.5px;
  font-weight: 780;
}
.reet-paper-link-row .paper-link-actions {
  grid-column: auto;
  flex-wrap: nowrap;
  padding-top: 0;
}

html[data-theme="light"] .paper-deep-link--pdf {
  color: #b42318 !important;
  border-color: rgba(220,38,38,.20);
  background: rgba(254,242,242,.96);
}
html[data-theme="light"] .paper-deep-link--pdf:hover {
  border-color: rgba(220,38,38,.32);
  background: #fff1f2;
  box-shadow: 0 10px 24px rgba(127,29,29,.08);
}
html[data-theme="light"] .paper-deep-link--attempt {
  color: #fff !important;
}
html[data-theme="light"] .reet-paper-link-row {
  background: rgba(15,23,42,.035);
}
html[data-theme="light"] .reet-paper-link-name {
  color: #29364a;
}

@media (max-width: 720px) {
  .paper-inventory-list li.paper-linked-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .paper-inventory-list li.paper-linked-item > strong {
    justify-self: start;
  }
  .paper-link-actions {
    width: 100%;
  }
  .paper-deep-link {
    flex: 1 1 145px;
    min-width: 0;
  }
  .reet-paper-link-row {
    grid-template-columns: 1fr;
  }
  .reet-paper-link-row .paper-link-actions {
    grid-column: 1;
    flex-wrap: wrap;
  }
}