:root {
  --library-panel-bg: rgba(255, 255, 255, 0.97);
  --library-panel-border: rgba(15, 23, 42, 0.08);
  --library-panel-gradient: linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(241, 245, 249, 0.86));
  --library-panel-glow: rgba(15, 23, 42, 0.12);
  --library-shadow: 0 35px 80px rgba(15, 23, 42, 0.18);
  --library-hero-start: rgba(15, 23, 42, 0.92);
  --library-hero-end: rgba(14, 165, 233, 0.85);
  --library-shell-bg: rgba(248, 250, 252, 0.98);
  --library-shell-border: rgba(148, 163, 184, 0.35);
  --library-shell-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(243, 244, 246, 0.85));
  --library-shell-glow: rgba(15, 23, 42, 0.1);
  --library-shell-shadow: 0 25px 60px rgba(15, 23, 42, 0.15);
  --library-card-bg: linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(241, 245, 249, 0.96));
  --library-card-border: rgba(148, 163, 184, 0.25);
  --library-card-shadow: 0 25px 60px rgba(15, 23, 42, 0.14);
  --library-card-text-color: #0f172a;
  --library-card-subtext-color: rgba(15, 23, 42, 0.75);
  --library-card-link-color: #0f172a;
  --library-main-gradient: linear-gradient(165deg, rgba(255, 255, 255, 0.98), rgba(245, 247, 250, 0.88));
  --library-sticky-bg: linear-gradient(180deg, #fff 70%, rgba(255, 255, 255, 0));
  --library-body-gradient: radial-gradient(circle at top, #f8fafc 0%, #e2e8f0 45%, #ffffff 100%);
  --library-accent: #0ea5e9;
  --library-surface-text: #0f172a;
  --library-surface-subtext: rgba(15, 23, 42, 0.75);
  --library-sidebar-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.85));
  --library-sidebar-border: rgba(148, 163, 184, 0.35);
  --library-sidebar-shadow: 0 25px 60px rgba(15, 23, 42, 0.18);
  --library-sidebar-text: #0f172a;
  --library-sidebar-chip-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.9));
  --library-sidebar-chip-border: rgba(148, 163, 184, 0.35);
  --library-sidebar-chip-color: #0f172a;
  --library-sidebar-chip-shadow: 0 10px 25px rgba(15, 23, 42, 0.1);
  --library-sidebar-chip-active-bg: linear-gradient(135deg, #38bdf8, #0ea5e9);
  --library-sidebar-chip-active-color: #fff;
  --library-sidebar-chip-active-border: transparent;
  --library-sidebar-link-hover: #0ea5e9;
}

body[data-learning-page="css"] {
  --library-panel-bg: rgba(2, 15, 35, 0.95);
  --library-panel-border: rgba(34, 211, 238, 0.4);
  --library-panel-gradient: linear-gradient(150deg, rgba(4, 20, 52, 0.96), rgba(2, 44, 54, 0.92));
  --library-panel-glow: rgba(34, 211, 238, 0.3);
  --library-shadow: 0 45px 110px rgba(14, 165, 233, 0.35);
  --library-hero-start: rgba(1, 20, 41, 0.95);
  --library-hero-end: rgba(6, 182, 212, 0.9);
  --library-shell-bg: rgba(4, 24, 54, 0.85);
  --library-shell-border: rgba(56, 189, 248, 0.35);
  --library-shell-gradient: linear-gradient(175deg, rgba(2, 30, 63, 0.92), rgba(3, 15, 36, 0.9));
  --library-shell-glow: rgba(34, 211, 238, 0.35);
  --library-shell-shadow: 0 55px 120px rgba(14, 165, 233, 0.32);
  --library-card-bg: linear-gradient(145deg, rgba(8, 47, 73, 0.95), rgba(2, 6, 23, 0.92));
  --library-card-border: rgba(34, 211, 238, 0.45);
  --library-card-shadow: 0 35px 90px rgba(14, 165, 233, 0.4);
  --library-card-text-color: #e0f2fe;
  --library-card-subtext-color: rgba(224, 242, 254, 0.85);
  --library-card-link-color: #5eead4;
  --library-main-gradient: linear-gradient(170deg, rgba(3, 11, 25, 0.95), rgba(1, 9, 20, 0.92));
  --library-sticky-bg: linear-gradient(180deg, rgba(3, 15, 36, 0.98) 70%, rgba(3, 15, 36, 0));
  --library-body-gradient: radial-gradient(circle at 20% 10%, rgba(45, 212, 191, 0.35), transparent 45%), radial-gradient(circle at 80% 0%, rgba(6, 182, 212, 0.35), transparent 40%), #020818;
  --library-accent: #2dd4bf;
  --library-sidebar-bg: linear-gradient(170deg, rgba(2, 20, 41, 0.95), rgba(1, 9, 20, 0.95));
  --library-sidebar-border: rgba(45, 212, 191, 0.4);
  --library-sidebar-shadow: 0 55px 110px rgba(13, 148, 136, 0.35);
  --library-sidebar-text: #d5f5ff;
  --library-sidebar-chip-bg: linear-gradient(140deg, rgba(15, 23, 42, 0.9), rgba(8, 47, 73, 0.9));
  --library-sidebar-chip-border: rgba(34, 211, 238, 0.45);
  --library-sidebar-chip-color: #bae6fd;
  --library-sidebar-chip-shadow: 0 30px 55px rgba(0, 0, 0, 0.55);
  --library-sidebar-chip-active-bg: linear-gradient(135deg, #2dd4bf, #22d3ee);
  --library-sidebar-chip-active-color: #03263f;
  --library-sidebar-chip-active-border: rgba(45, 212, 191, 0.7);
  --library-sidebar-link-hover: #5eead4;
  --library-surface-text: #d7f9ff;
  --library-surface-subtext: rgba(222, 247, 253, 0.8);
}

body[data-learning-page="html"] {
  --library-panel-bg: rgba(34, 10, 22, 0.96);
  --library-panel-border: rgba(249, 115, 22, 0.45);
  --library-panel-gradient: linear-gradient(150deg, rgba(50, 7, 45, 0.96), rgba(76, 29, 149, 0.85));
  --library-panel-glow: rgba(251, 146, 60, 0.32);
  --library-shadow: 0 55px 120px rgba(147, 51, 234, 0.35);
  --library-hero-start: rgba(76, 29, 149, 0.95);
  --library-hero-end: rgba(249, 115, 22, 0.9);
  --library-shell-bg: rgba(33, 7, 36, 0.92);
  --library-shell-border: rgba(251, 146, 60, 0.45);
  --library-shell-gradient: linear-gradient(175deg, rgba(33, 7, 36, 0.95), rgba(120, 53, 15, 0.86));
  --library-shell-glow: rgba(234, 88, 12, 0.35);
  --library-shell-shadow: 0 55px 115px rgba(76, 29, 149, 0.4);
  --library-card-bg: linear-gradient(150deg, rgba(76, 29, 149, 0.92), rgba(120, 53, 15, 0.9));
  --library-card-border: rgba(251, 146, 60, 0.45);
  --library-card-shadow: 0 40px 95px rgba(124, 58, 237, 0.35);
  --library-card-text-color: #fff5f2;
  --library-card-subtext-color: rgba(255, 237, 213, 0.9);
  --library-card-link-color: #f97316;
  --library-main-gradient: linear-gradient(170deg, rgba(24, 4, 23, 0.96), rgba(51, 11, 32, 0.92));
  --library-sticky-bg: linear-gradient(180deg, rgba(39, 6, 26, 0.98) 70%, rgba(39, 6, 26, 0));
  --library-body-gradient: radial-gradient(circle at 15% 15%, rgba(249, 115, 22, 0.3), transparent 35%), radial-gradient(circle at 80% -10%, rgba(147, 51, 234, 0.35), transparent 45%), #1b0313;
  --library-accent: #fb923c;
  --library-sidebar-bg: linear-gradient(165deg, rgba(56, 14, 46, 0.94), rgba(99, 35, 3, 0.9));
  --library-sidebar-border: rgba(249, 115, 22, 0.5);
  --library-sidebar-shadow: 0 55px 110px rgba(99, 102, 241, 0.35);
  --library-sidebar-text: #fff7ed;
  --library-sidebar-chip-bg: linear-gradient(140deg, rgba(76, 29, 149, 0.85), rgba(120, 53, 15, 0.85));
  --library-sidebar-chip-border: rgba(249, 115, 22, 0.55);
  --library-sidebar-chip-color: #ffe4c4;
  --library-sidebar-chip-shadow: 0 30px 55px rgba(0, 0, 0, 0.55);
  --library-sidebar-chip-active-bg: linear-gradient(135deg, #f59e0b, #ec4899);
  --library-sidebar-chip-active-color: #2f050a;
  --library-sidebar-chip-active-border: rgba(251, 146, 60, 0.7);
  --library-sidebar-link-hover: #fed7aa;
  --library-surface-text: #fff7ed;
  --library-surface-subtext: rgba(255, 237, 213, 0.85);
}

body[data-learning-page="web-design"] {
  --library-panel-bg: rgba(18, 24, 40, 0.95);
  --library-panel-border: rgba(14, 116, 144, 0.35);
  --library-panel-gradient: linear-gradient(150deg, rgba(18, 24, 40, 0.95), rgba(8, 47, 73, 0.85));
  --library-panel-glow: rgba(79, 70, 229, 0.35);
  --library-shadow: 0 45px 90px rgba(14, 116, 144, 0.45);
  --library-hero-start: rgba(15, 23, 42, 0.95);
  --library-hero-end: rgba(124, 58, 237, 0.9);
  --library-shell-bg: rgba(15, 23, 42, 0.75);
  --library-shell-border: rgba(99, 102, 241, 0.35);
  --library-shell-gradient: linear-gradient(175deg, rgba(15, 23, 42, 0.9), rgba(8, 47, 73, 0.75));
  --library-shell-glow: rgba(56, 189, 248, 0.25);
  --library-shell-shadow: 0 45px 90px rgba(79, 70, 229, 0.35);
  --library-card-bg: linear-gradient(150deg, rgba(15, 23, 42, 0.9), rgba(30, 27, 75, 0.9));
  --library-card-border: rgba(129, 140, 248, 0.35);
  --library-card-shadow: 0 30px 80px rgba(56, 189, 248, 0.25);
  --library-card-text-color: #e2e8f0;
  --library-card-subtext-color: rgba(226, 232, 240, 0.8);
  --library-card-link-color: #38bdf8;
  --library-main-gradient: linear-gradient(170deg, rgba(22, 33, 62, 0.95), rgba(10, 12, 23, 0.85));
  --library-sticky-bg: linear-gradient(180deg, rgba(15, 23, 42, 0.95) 70%, rgba(15, 23, 42, 0));
  --library-body-gradient: radial-gradient(circle at 10% 10%, rgba(59, 130, 246, 0.35), transparent 45%), radial-gradient(circle at 85% 0%, rgba(79, 70, 229, 0.4), transparent 40%), #020617;
  --library-accent: #7c3aed;
  --library-sidebar-bg: linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(30, 27, 75, 0.92));
  --library-sidebar-border: rgba(129, 140, 248, 0.4);
  --library-sidebar-shadow: 0 45px 90px rgba(79, 70, 229, 0.45);
  --library-sidebar-text: #e0e7ff;
  --library-sidebar-chip-bg: linear-gradient(140deg, rgba(15, 23, 42, 0.85), rgba(17, 24, 39, 0.85));
  --library-sidebar-chip-border: rgba(129, 140, 248, 0.45);
  --library-sidebar-chip-color: #c7d2fe;
  --library-sidebar-chip-shadow: 0 25px 45px rgba(2, 6, 23, 0.6);
  --library-sidebar-chip-active-bg: linear-gradient(135deg, #38bdf8, #7c3aed);
  --library-sidebar-chip-active-color: #0f172a;
  --library-sidebar-chip-active-border: rgba(129, 140, 248, 0.65);
  --library-sidebar-link-hover: #38bdf8;
}

body.code-library-page {
  margin: 0;
  padding: 140px 0 90px;
  background: var(--library-body-gradient);
  color: white;
  overflow-x: hidden;
}

body.code-library-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(15, 23, 42, 0.18), transparent 40%);
  pointer-events: none;
  z-index: -1;
}

/* Override global section fade-in animation so cards stay visible on library pages */
body.code-library-page section {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}



.code-library-page .css-demo-container .info p,
.code-library-page .css-demo-container .info li,
.code-library-page .css-demo-container .info span {
  color: var(--library-card-subtext-color, #475569);
}

.code-library-page .library-main .description-text {
  color: #475569;
}

.library-hero {
  position: relative;
  max-width: 1100px;
  margin: 0 auto 32px;
  padding: 72px 28px 48px;
  text-align: center;
  color: #fff;
  width: 100%;
  box-sizing: border-box;
}

.library-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 30px;
  background: linear-gradient(130deg, var(--library-hero-start), var(--library-hero-end));
  filter: drop-shadow(0 35px 90px rgba(0, 0, 0, 0.45));
  z-index: 0;
}

.library-hero > * {
  position: relative;
  z-index: 1;
}

.library-hero h1 {
  font-size: clamp(2.6rem, 4vw, 3.8rem);
  margin: 0 0 12px;
}

.library-hero p {
  margin: 0 auto 22px;
  max-width: 720px;
  font-size: 1.1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
}

.library-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.library-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.15);
  font-weight: 600;
  letter-spacing: 0.03em;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  color: #fff;
}

.library-panel {
  max-width: 1250px;
  margin: 0 auto;
  background: var(--library-panel-gradient), var(--library-panel-bg);
  border-radius: 28px;
  padding: 48px 36px 60px;
  border: 1px solid var(--library-panel-border);
  box-shadow: var(--library-shadow), 0 0 60px var(--library-panel-glow);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  position: relative;
  overflow: visible;
  width: 100%;
  box-sizing: border-box;
}

.library-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 10% 10%, rgba(255, 255, 255, 0.12), transparent 40%), radial-gradient(circle at 90% 0%, rgba(255, 255, 255, 0.08), transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.library-panel::after {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 24px;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.library-panel__header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
}

.library-panel__header h2 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.library-panel__header p {
  margin: 0;
  color: white;
}

.library-panel__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: #0f172a;
}

.library-panel__meta button {
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.2);
  background: none;
  padding: 10px 20px;
  font-weight: 600;
  cursor: pointer;
  color: white
}

.library-search-row {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.library-search-input {
  flex: 1 1 320px;
}

.library-search-input input {
  width: 100%;
  padding: 16px 20px;
  border-radius: 18px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  background: #fff;
  font-size: 1rem;
}

.library-hint {
  margin: 0;
  color: white;
  font-size: 0.95rem;
}

.library-shell {
  margin-top: 36px;
  padding: 32px;
  border-radius: 26px;
  background: var(--library-shell-gradient), var(--library-shell-bg);
  border: 1px solid var(--library-shell-border);
  box-shadow: var(--library-shell-shadow), 0 0 55px var(--library-shell-glow);
  position: relative;
  overflow: visible;
  width: 100%;
  box-sizing: border-box;
}

.library-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.18), transparent 45%),
    radial-gradient(circle at 85% 0%, rgba(255, 255, 255, 0.12), transparent 50%);
  pointer-events: none;
}

.library-shell::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.6;
  pointer-events: none;
}

.library-grid {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 30px;
  width: 100%;
  box-sizing: border-box;
}

.library-sidebar,
#learnSidebar {
  position: -webkit-sticky;
  position: sticky;
  top: clamp(80px, 6vw, 140px);
  align-self: flex-start;
  background: var(--library-sidebar-bg);
  border-radius: 22px;
  border: 1px solid var(--library-sidebar-border);
  box-shadow: var(--library-sidebar-shadow);
  padding: 24px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  position: relative;
  color: var(--library-sidebar-text);
}

.library-sidebar a,
#learnSidebar a {
  color: inherit;
}

.library-sidebar::after,
#learnSidebar::after {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.4);
  opacity: 0.55;
  pointer-events: none;
}

.sidebar-topic-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.sidebar-topic-header h2 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--library-sidebar-text);
}

.sidebar-clear-topics {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: transparent;
  color: var(--library-sidebar-text);
  padding: 6px 14px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.2s ease, color 0.2s ease;
}

.sidebar-clear-topics:hover,
.sidebar-clear-topics:focus-visible {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.library-main {
  background: var(--library-main-gradient);
  border-radius: 24px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  padding: 32px;
  box-shadow: 0 35px 70px rgba(15, 23, 42, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  min-width: 0;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
}

.library-main::after {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.25);
  pointer-events: none;
}

.sticky-filter {
  position: sticky;
  top: 0;
  padding-bottom: 18px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
  background: var(--library-sticky-bg);
  z-index: 2;
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.4);
}

.code-library-page .section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-radius: 18px;
  margin: 28px 0 10px;
  background: #fff;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
  color: #0f172a;
}

.code-library-page .section-divider {
  height: 1px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.3);
  margin-bottom: 20px;
}

.code-library-page .topic-header {
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  margin: 18px 0 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  padding-bottom: 6px;
  scroll-margin-top: 120px;
}

.code-library-page .css-interactive-card,
.code-library-page .html-interactive-card,
.code-library-page .frosted-card {
  border-radius: 22px;
  border: 1px solid var(--library-card-border);
  background: var(--library-card-bg);
  color: var(--library-card-text-color);
  box-shadow: var(--library-card-shadow);
  padding: 26px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.code-library-page .css-interactive-card h1,
.code-library-page .css-interactive-card h2,
.code-library-page .css-interactive-card h3,
.code-library-page .css-interactive-card h4,
.code-library-page .css-interactive-card h5,
.code-library-page .css-interactive-card h6,
.code-library-page .html-interactive-card h1,
.code-library-page .html-interactive-card h2,
.code-library-page .html-interactive-card h3,
.code-library-page .html-interactive-card h4,
.code-library-page .html-interactive-card h5,
.code-library-page .html-interactive-card h6,
.code-library-page .frosted-card h1,
.code-library-page .frosted-card h2,
.code-library-page .frosted-card h3,
.code-library-page .frosted-card h4,
.code-library-page .frosted-card h5,
.code-library-page .frosted-card h6,
.code-library-page .css-interactive-card strong,
.code-library-page .html-interactive-card strong,
.code-library-page .frosted-card strong {
  color: var(--library-card-text-color);
}

.code-library-page .css-interactive-card p,
.code-library-page .css-interactive-card li,
.code-library-page .css-interactive-card span,
.code-library-page .css-interactive-card small,
.code-library-page .css-interactive-card label,
.code-library-page .html-interactive-card p,
.code-library-page .html-interactive-card li,
.code-library-page .html-interactive-card span,
.code-library-page .html-interactive-card small,
.code-library-page .html-interactive-card label,
.code-library-page .frosted-card p,
.code-library-page .frosted-card li,
.code-library-page .frosted-card span,
.code-library-page .frosted-card small,
.code-library-page .frosted-card label {
  color: var(--library-card-subtext-color);
}

.code-library-page .css-preview-section,
.code-library-page .html-preview-section,
.code-library-page .css-code-section,
.code-library-page .html-code-section {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(248, 250, 252, 0.92);
  padding: 20px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  color: var(--library-surface-text);
}

.code-library-page .css-preview-section h5,
.code-library-page .html-preview-section h5,
.code-library-page .css-code-section h5,
.code-library-page .html-code-section h5,
.code-library-page .css-code-section h6,
.code-library-page .html-code-section h6 {
  color: var(--library-surface-text);
}

.code-library-page .css-preview-section p,
.code-library-page .html-preview-section p,
.code-library-page .css-code-section p,
.code-library-page .html-code-section p,
.code-library-page .css-preview-section span,
.code-library-page .html-preview-section span,
.code-library-page .css-code-section span,
.code-library-page .html-code-section span,
.code-library-page .css-preview-section small,
.code-library-page .html-preview-section small,
.code-library-page .css-code-section small,
.code-library-page .html-code-section small {
  color: var(--library-surface-subtext);
}

.code-library-page .css-interactive-card .info a,
.code-library-page .html-interactive-card .info a,
.code-library-page .frosted-card .info a {
  color: var(--library-card-link-color);
  font-weight: 600;
}

.code-library-page .css-interactive-card .info a:hover,
.code-library-page .html-interactive-card .info a:hover,
.code-library-page .frosted-card .info a:hover {
  opacity: 0.85;
}

.code-library-page .css-live-preview,
.code-library-page .html-live-preview {
  min-height: 160px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: #f8fafc;
  padding: 22px;
  color: var(--library-surface-text);
  width: 100%;
  overflow-x: auto;
}

.code-library-page .css-live-preview p,
.code-library-page .css-live-preview span,
.code-library-page .css-live-preview small,
.code-library-page .css-live-preview label,
.code-library-page .html-live-preview p,
.code-library-page .html-live-preview span,
.code-library-page .html-live-preview small,
.code-library-page .html-live-preview label {
  color: var(--library-surface-subtext);
}

.code-library-page .css-live-preview *,
.code-library-page .html-live-preview * {
  max-width: 100% !important;
  box-sizing: border-box;
}

.code-library-page .css-live-preview img,
.code-library-page .css-live-preview video,
.code-library-page .css-live-preview canvas,
.code-library-page .css-live-preview iframe,
.code-library-page .html-live-preview img,
.code-library-page .html-live-preview video,
.code-library-page .html-live-preview canvas,
.code-library-page .html-live-preview iframe {
  height: auto;
}

.code-library-page .code-editor,
.code-library-page .html-code-editor {
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.3);
  background: #0f172a;
  color: #f8fafc;
  min-height: 140px;
  width: 100%;
  box-sizing: border-box;
}

.code-library-page .css-demo-container,
.code-library-page .html-demo-container {
  overflow-x: hidden;
}

.code-library-page .copy-btn {
  border-radius: 12px;
  border: none;
  padding: 10px 14px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--library-accent), #1d4ed8);
  color: #fff;
  box-shadow: 0 15px 30px rgba(37, 99, 235, 0.25);
}

.code-library-page .sidebar-program,
.code-library-page .sidebar-topic,
.code-library-page .practice-language-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--library-sidebar-chip-border);
  background: var(--library-sidebar-chip-bg);
  font-weight: 600;
  color: var(--library-sidebar-chip-color);
  margin: 6px 6px 10px 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: var(--library-sidebar-chip-shadow);
}

.code-library-page .sidebar-topic a {
  color: inherit !important;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.code-library-page .sidebar-topic a:hover,
.code-library-page .sidebar-topic a:focus {
  color: var(--library-sidebar-link-hover) !important;
  text-decoration: none;
}

.code-library-page .sidebar-program.active,
.code-library-page .sidebar-topic.active,
.code-library-page .sidebar-topic.active-topic,
.code-library-page .practice-language-btn.active {
  background: var(--library-sidebar-chip-active-bg);
  color: var(--library-sidebar-chip-active-color);
  border-color: var(--library-sidebar-chip-active-border);
  box-shadow: 0 15px 30px rgba(14, 165, 233, 0.35);
}

#learnPlaceholder,
.library-placeholder {
  padding: 32px;
  border-radius: 20px;
  border: 1px dashed rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.03);
  color: #475569;
  line-height: 1.6;
}

.library-mobile-rows {
  display: none;
  margin-bottom: 20px;
}

.library-mobile-rows .programs-row,
.library-mobile-rows .topics-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scroll-snap-type: x proximity;
}

.library-mobile-rows .sidebar-program,
.library-mobile-rows .sidebar-topic {
  scroll-snap-align: start;
}

.library-mobile-rows .sidebar-topic-clear {
  border: 1px dashed rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.08);
  color: var(--library-sidebar-text);
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 600;
  margin-right: 10px;
}

.library-mobile-rows .programs-row::-webkit-scrollbar,
.library-mobile-rows .topics-row::-webkit-scrollbar {
  display: none;
}

.library-mobile-toolbar {
  display: none;
  margin-bottom: 22px;
}

.library-mobile-toolbar .toolbar-btn {
  border: 1px solid var(--library-sidebar-chip-border);
  background: var(--library-sidebar-chip-bg);
  color: var(--library-sidebar-chip-color);
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: var(--library-sidebar-chip-shadow);
  transition: background 0.2s ease, transform 0.2s ease;
}

@media (max-width: 1024px) {
  .library-mobile-toolbar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 10px;
    align-items: center;
    padding: 12px 14px;
    border-radius: 18px;
    background: var(--library-panel-gradient);
    border: 1px solid var(--library-shell-border);
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.35);
    position: sticky;
    top: 82px;
    z-index: 6;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }

  .library-mobile-toolbar .toolbar-state {
    background: rgba(15, 23, 42, 0.25);
    border-color: rgba(255, 255, 255, 0.2);
  }
}

.library-mobile-toolbar .toolbar-btn:focus-visible {
  outline: 2px solid var(--library-accent);
  outline-offset: 3px;
}

.library-mobile-toolbar .toolbar-btn:active {
  transform: scale(0.98);
}

.library-mobile-toolbar .toolbar-state {
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  color: var(--library-sidebar-text);
  padding: 6px 10px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.12);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 1100px) {
  body.code-library-page {
    padding: 120px 16px 70px;
  }

  .library-panel,
  .library-hero {
    padding: 48px 20px;
  }

  .library-shell {
    padding: 26px 20px;
  }

  .library-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .library-sidebar,
  #learnSidebar {
    position: static;
    top: auto;
    max-height: none;
    overflow: visible;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.15);
  }

  .library-mobile-rows {
    display: block;
  }
}

@media (max-width: 900px) {
  body.code-library-page {
    padding: 110px 14px 60px;
  }

  .library-panel {
    padding: 40px 20px 48px;
  }

  .library-hero {
    padding: 60px 18px 36px;
    text-align: left;
  }

  .library-hero p {
    font-size: 1rem;
  }

  .library-shell {
    padding: 24px 18px;
  }

  .library-panel__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .library-panel__meta {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    color: inherit;
  }

  .library-search-row {
    flex-direction: column;
    align-items: stretch;
  }

  .library-search-input {
    flex: 1 1 auto;
  }

  .library-hint {
    width: 100%;
    font-size: 0.9rem;
  }
}

@media (max-width: 640px) {
  body.code-library-page {
    padding: 98px 12px 55px;
  }

  .library-panel__header h2 {
    font-size: 1.6rem;
  }

  .library-panel {
    padding: 32px 18px 40px;
  }

  .library-main {
    padding: 22px 16px;
  }

  .library-hero h1 {
    font-size: 2.1rem;
  }

  .library-hint {
    width: 100%;
    font-size: 0.85rem;
  }

  .library-panel__meta {
    flex-direction: column;
    align-items: stretch;
  }

  .library-panel__meta button,
  .library-search-row button,
  #libraryReset {
    width: 100%;
  }

  .library-mobile-toolbar {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .library-mobile-toolbar .toolbar-btn,
  .library-mobile-toolbar .toolbar-state {
    width: 100%;
    text-align: center;
  }

  .library-sidebar,
  #learnSidebar {
    display: none;
  }

  .library-mobile-rows {
    gap: 12px;
  }

  .library-mobile-rows .programs-row,
  .library-mobile-rows .topics-row {
    flex-wrap: nowrap;
  }

  .code-library-page .css-interactive-card,
  .code-library-page .html-interactive-card,
  .code-library-page .frosted-card {
    padding: 20px;
  }

  .code-library-page .css-live-preview,
  .code-library-page .html-live-preview {
    padding: 16px;
  }

  .code-library-page .code-editor,
  .code-library-page .html-code-editor {
    font-size: 0.9rem;
    min-height: 120px;
  }

  .code-library-page .copy-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  body.code-library-page {
    padding: 86px 10px 42px;
  }

  .library-hero {
    padding: 48px 16px 30px;
  }

  .library-panel__header h2 {
    font-size: 1.4rem;
  }

  .library-panel__header p {
    font-size: 0.95rem;
  }

  .library-search-input input {
    padding: 14px 16px;
  }

  .library-panel__meta span {
    font-size: 0.85rem;
  }

  .library-shell {
    padding: 20px 14px;
  }

  .code-library-page .css-interactive-card,
  .code-library-page .html-interactive-card,
  .code-library-page .frosted-card {
    padding: 18px;
  }
}

@media (max-width: 420px) {
  .library-panel__meta {
    gap: 6px;
  }

  .library-panel__meta span {
    text-align: left;
  }

  .library-panel__meta button {
    font-size: 0.9rem;
    padding: 12px;
  }

  .library-search-row {
    gap: 10px;
  }

  .library-hero p {
    font-size: 0.9rem;
  }
}