/* ============================================================
   Mentor Oogway dizayn tizimi — Adaptiv O'quv Platformasi
   ============================================================ */

:root {
  /* --- Mentor Oogway palitrasi --- */
  --bg:            #0A0E17;
  --panel:         #121826;
  --panel-hi:      #171F30;
  --border:        #263349;
  --border-hi:     #2DD4BF;

  --teal:          #2DD4BF;
  --teal-dark:     #0F766E;

  --white:         #F5F7FA;
  --gray:          #8A93A6;
  --gray-light:    #C7CEDB;

  --amber:         #FBBF24;
  --orange:        #FB923C;
  --red:           #F87171;
  --purple:        #A78BFA;

  /* --- Legacy aliases (kept so every template keeps working) --- */
  --surface:      var(--panel);
  --surface-2:    var(--panel-hi);
  --text:         var(--white);
  --text-muted:   var(--gray);
  --accent:       var(--teal);
  --accent-hover: #4EE2CF;
  --mastered:     var(--teal);
  --medium:       var(--amber);
  --weak:         var(--red);
  --new:          var(--gray);

  --radius-card: 14px;
  --radius-button: 9999px;
  --radius-badge: 9999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  --motion-hover: 150ms ease;
  --motion-transition: 250ms ease;

  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Inter', sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --motion-hover: 0ms;
    --motion-transition: 0ms;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.5;
  position: relative;
}

/* Xira nuqtali to'r + burchak glow — dekorativ, matnga xalaqit bermaydi */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: radial-gradient(#182238 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.55;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(480px circle at 8% -5%, color-mix(in srgb, var(--teal) 12%, transparent), transparent 60%),
    radial-gradient(480px circle at 100% 110%, color-mix(in srgb, var(--purple) 10%, transparent), transparent 60%);
  pointer-events: none;
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.5rem; }

p { color: var(--gray-light); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.kicker {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: var(--space-2);
}

a {
  color: var(--teal);
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

input, select, textarea {
  font-family: var(--font-body);
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--white);
  border-radius: 10px;
  padding: var(--space-2) var(--space-3);
}

label {
  color: var(--gray-light);
  font-size: 0.9rem;
}

/* ---------------- Header / brand ---------------- */

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--panel-hi);
  border: 1.5px solid var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  font-weight: 700;
  font-family: var(--font-display);
  flex-shrink: 0;
}

.brand-text .brand-name {
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.1;
}

.brand-text .brand-subtitle {
  color: var(--teal);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.app-topbar nav {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  color: var(--white);
  font-size: 1.2rem;
  line-height: 1;
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
}

.nav-link {
  color: var(--gray-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  transition: color var(--motion-hover), border-color var(--motion-hover), background var(--motion-hover);
}

.nav-link:hover {
  color: var(--white);
  border-color: var(--border);
}

.nav-link.active {
  color: var(--bg);
  background: var(--teal);
}

.nav-badge {
  display: inline-block;
  min-width: 18px;
  margin-left: var(--space-1);
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--red);
  color: var(--bg);
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
  vertical-align: middle;
}

.nav-search {
  margin-left: var(--space-2);
}

.nav-search input {
  background: var(--panel-hi);
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  color: var(--white);
  padding: var(--space-2) var(--space-3);
  font-size: 0.85rem;
  width: 180px;
}

.nav-search input:focus {
  outline: 2px solid var(--teal);
  border-color: var(--teal);
}

.app-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5);
}

/* ---------------- Cards ---------------- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-5);
}

.card-hi {
  background: var(--panel-hi);
  border-color: var(--border-hi);
}

.card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

/* ---------------- Buttons ---------------- */

.button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  background: var(--teal);
  color: #06201C;
  font-weight: 700;
  padding: var(--space-3) var(--space-5);
  text-decoration: none;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background var(--motion-hover), transform var(--motion-hover);
}

.button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.button-secondary {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--white);
}

.button-secondary:hover {
  border-color: var(--teal);
  background: transparent;
  color: var(--white);
}

.button-danger {
  background: transparent;
  border: 1.5px solid var(--red);
  color: var(--red);
}

.button-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.85rem;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ---------------- Badges / pills ---------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: var(--radius-badge);
  border: 1px solid currentColor;
  padding: 3px var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--panel-hi);
}

.badge-mastered, .badge-mustahkam { color: var(--teal); }
.badge-medium, .badge-orta        { color: var(--amber); }
.badge-weak, .badge-zaif          { color: var(--red); }
.badge-new, .badge-yangi          { color: var(--gray); }

[x-cloak] {
  display: none !important;
}

/* ---------------- Progress ---------------- */

.progress-ribbon {
  height: 10px;
  background: var(--panel-hi);
  border-radius: var(--radius-button);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.progress-ribbon-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal-dark), var(--teal));
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-button);
  position: relative;
  overflow: hidden;
}

.progress-ribbon-glow {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 24px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, white 55%, var(--teal)));
  filter: blur(2px);
  animation: progress-shimmer 1.6s ease-in-out infinite;
}

@keyframes progress-shimmer {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.9; }
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  color: var(--gray);
  font-size: 0.85rem;
  margin-top: var(--space-2);
}

/* ---------------- Stat tiles ---------------- */

.stat-tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-5);
  text-align: center;
}

.stat-tile .stat-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.75rem;
  color: var(--teal);
  line-height: 1;
}

.stat-tile.stat-weak .stat-number { color: var(--red); }
.stat-tile.stat-medium .stat-number { color: var(--amber); }
.stat-tile.stat-new .stat-number { color: var(--gray); }

.stat-tile .stat-label {
  margin-top: var(--space-2);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}

/* ---------------- Session runner / flashcards ---------------- */

.item-flag-slot {
  position: absolute;
  top: 0;
  right: 0;
}

.flag-button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--gray-light);
  border-radius: var(--radius-button);
  padding: var(--space-1) var(--space-3);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--motion-hover), color var(--motion-hover);
}

.flag-button:hover {
  border-color: var(--red);
  color: var(--red);
}

.flag-button.flag-active {
  border-color: var(--amber);
  color: var(--amber);
}

.flag-button.flag-hidden {
  display: inline-block;
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: var(--radius-button);
  padding: var(--space-1) var(--space-3);
  font-size: 0.85rem;
}

.item-surface {
  margin-top: var(--space-6);
  min-height: 40vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-5);
  background: var(--panel-hi);
  border: 1.5px solid var(--border-hi);
  border-radius: var(--radius-card);
  padding: var(--space-7) var(--space-5);
}

.item-front, .item-back {
  font-size: 1.4rem;
  font-weight: 600;
  max-width: 640px;
  color: var(--white);
}

.item-back {
  color: var(--gray-light);
  font-weight: 400;
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}

.grade-buttons {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

.grade-button {
  border-radius: var(--radius-button);
  border: 1.5px solid var(--border);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-weight: 700;
  cursor: pointer;
  color: var(--white);
  background: transparent;
  transition: background var(--motion-hover), border-color var(--motion-hover), transform var(--motion-hover);
}

.grade-button:hover {
  transform: translateY(-1px);
}

.grade-button-again { border-color: var(--red); color: var(--red); }
.grade-button-again:hover { background: color-mix(in srgb, var(--red) 14%, transparent); }
.grade-button-hard { border-color: var(--amber); color: var(--amber); }
.grade-button-hard:hover { background: color-mix(in srgb, var(--amber) 14%, transparent); }
.grade-button-good { border: none; background: var(--teal); color: #06201C; }
.grade-button-good:hover { background: var(--accent-hover); }

.kbd-hint {
  display: inline-block;
  margin-left: var(--space-1);
  padding: 0 5px;
  border-radius: 4px;
  border: 1px solid currentColor;
  opacity: 0.55;
  font-size: 0.72rem;
  font-family: var(--font-mono, monospace);
  vertical-align: middle;
}

.grade-button.grade-flash {
  animation: grade-flash-pulse 0.35s ease-out forwards;
}

.grade-button-again.grade-flash { animation-name: grade-flash-again; }
.grade-button-hard.grade-flash { animation-name: grade-flash-hard; }
.grade-button-good.grade-flash { animation-name: grade-flash-good; }

@keyframes grade-flash-again {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--red) 55%, transparent); transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { box-shadow: 0 0 0 14px transparent; background: var(--red); color: #2b0b0b; transform: scale(1); }
}

@keyframes grade-flash-hard {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--amber) 55%, transparent); transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { box-shadow: 0 0 0 14px transparent; background: var(--amber); color: #2b1d02; transform: scale(1); }
}

@keyframes grade-flash-good {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--teal) 55%, transparent); transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { box-shadow: 0 0 0 14px transparent; background: var(--teal); color: #06201C; transform: scale(1); }
}

.choice-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: 100%;
  max-width: 480px;
}

.choice-button {
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--panel);
  color: var(--white);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 500;
  transition: border-color var(--motion-hover), background var(--motion-hover);
}

.choice-button:hover {
  border-color: var(--teal);
}

.choice-button.choice-focused {
  border-color: var(--teal);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--teal) 45%, transparent);
}

.choice-correct {
  border-color: var(--teal);
  background: color-mix(in srgb, var(--teal) 14%, var(--panel));
}

.choice-incorrect {
  border-color: var(--red);
  background: color-mix(in srgb, var(--red) 14%, var(--panel));
}

.explanation {
  max-width: 480px;
  color: var(--gray-light);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}

/* ---------------- Mode select (session start) ---------------- */

.mode-select {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.mode-option {
  display: block;
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border);
  background: var(--panel);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  transition: border-color var(--motion-hover), background var(--motion-hover), transform var(--motion-hover);
}

.mode-option:hover {
  transform: translateY(-1px);
  border-color: var(--teal);
}

.mode-option input {
  display: none;
}

.mode-option .mode-title {
  color: var(--white);
  font-weight: 700;
  font-size: 1.05rem;
}

.mode-option .mode-desc {
  color: var(--gray);
  font-size: 0.85rem;
  margin-top: 4px;
}

.mode-option.selected {
  background: color-mix(in srgb, var(--teal) 16%, var(--panel));
  border-color: var(--teal);
}

.mode-option.selected .mode-title {
  color: var(--teal);
}

/* ---------------- Heatmap / topic cards ---------------- */

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.heatmap-cell {
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border);
  padding: var(--space-4);
  cursor: pointer;
  text-decoration: none;
  display: block;
  transition: transform var(--motion-hover), border-color var(--motion-hover);
}

.heatmap-cell:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
}

.heatmap-cell-title {
  color: var(--gray);
  font-size: 0.72rem;
  font-family: var(--font-mono);
}

.heatmap-cell-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--white);
  margin: 4px 0 var(--space-2);
  min-height: 2.4em;
}

.heatmap-cell-ratio {
  font-size: 1.3rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.heatmap-cell-caption {
  font-size: 0.68rem;
  color: var(--gray);
  margin-top: 2px;
}

.heatmap-cell-mustahkam { background: color-mix(in srgb, var(--teal) 16%, var(--panel)); }
.heatmap-cell-mustahkam .heatmap-cell-ratio { color: var(--teal); }
.heatmap-cell-orta      { background: color-mix(in srgb, var(--amber) 16%, var(--panel)); }
.heatmap-cell-orta .heatmap-cell-ratio { color: var(--amber); }
.heatmap-cell-zaif      { background: color-mix(in srgb, var(--red) 16%, var(--panel)); }
.heatmap-cell-zaif .heatmap-cell-ratio { color: var(--red); }
.heatmap-cell-yangi     { background: var(--panel); }
.heatmap-cell-yangi .heatmap-cell-ratio { color: var(--gray); }

.topic-card {
  border-radius: var(--radius-card);
  border: 1.5px solid var(--border);
  background: var(--panel);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  transition: border-color var(--motion-hover);
}

.topic-card:hover {
  border-color: var(--teal);
}

.topic-card .topic-number {
  color: var(--teal);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
}

.topic-card .topic-title {
  color: var(--white);
  font-weight: 600;
}

.topic-card .topic-meta {
  color: var(--gray);
  font-size: 0.8rem;
}

.mastery-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

.topic-list, .session-list {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.session-list li {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* ---------------- Activity calendar ---------------- */

.calendar-grid {
  display: flex;
  gap: 3px;
  margin-top: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.calendar-week {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.calendar-day {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--panel-hi);
}

.calendar-day.active {
  background: var(--teal);
}

.calendar-day.future {
  background: transparent;
}

.streak-tiles {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.streak-tiles .stat-tile {
  flex: 1;
}

/* ---------------- Leech list ---------------- */

.leech-list {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.leech-list li {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: var(--space-3) var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}

.leech-lapses {
  color: var(--red);
  font-weight: 700;
  white-space: nowrap;
}

/* ---------------- Leaderboard ---------------- */

.leaderboard-list {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.leaderboard-list li {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.leaderboard-rank {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--gray);
  width: 28px;
  text-align: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.leaderboard-list li.leaderboard-top3 .leaderboard-rank {
  color: var(--teal);
  font-size: 1.4rem;
}

.leaderboard-list li.leaderboard-me {
  border-color: var(--teal);
  background: color-mix(in srgb, var(--teal) 10%, var(--panel));
}

.leaderboard-user {
  flex: 1 1 140px;
  font-weight: 600;
  color: var(--gray-light);
}

.leaderboard-me-tag {
  color: var(--teal);
  font-weight: 700;
  font-size: 0.8rem;
}

.leaderboard-score {
  color: var(--teal);
  font-weight: 700;
  white-space: nowrap;
}

.leaderboard-stats {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
  color: var(--gray-light);
  font-size: 0.85rem;
}

/* ---------------- Search results ---------------- */

.search-results-group {
  margin-bottom: var(--space-5);
}

.search-results-group h3 {
  color: var(--teal);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.search-result-item {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-2);
  display: block;
  text-decoration: none;
  color: var(--gray-light);
}

.search-result-item:hover {
  border-color: var(--teal);
}

.search-result-item .result-title {
  color: var(--white);
  font-weight: 600;
}

.search-result-item .result-snippet {
  display: block;
  color: var(--gray);
  font-size: 0.85rem;
  margin-top: var(--space-1);
}

/* ---------------- Filter bar ---------------- */

.material-wrap {
  max-width: 760px;
  margin: 0 auto;
}

.material-content {
  line-height: 1.75;
  font-size: 1.05rem;
  color: var(--gray-light);
}

.material-content h1, .material-content h2, .material-content h3 {
  color: var(--white);
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}

.material-content h1:first-child, .material-content h2:first-child, .material-content h3:first-child {
  margin-top: 0;
}

.material-content p, .material-content li {
  line-height: 1.75;
}

.material-content strong {
  color: var(--white);
}

.material-content ul, .material-content ol {
  padding-left: 1.4em;
}

.material-content code {
  background: var(--panel-hi);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.material-content pre {
  background: #060A12;
  border: 1px solid var(--border);
  padding: var(--space-4);
  border-radius: 12px;
  overflow-x: auto;
}

.material-content pre code {
  background: none;
  padding: 0;
}

.material-content blockquote {
  border-left: 3px solid var(--teal);
  margin: 1em 0;
  padding-left: var(--space-4);
  color: var(--gray);
}

.code-block-wrap {
  position: relative;
  margin: var(--space-3) 0 var(--space-5);
}

.code-block {
  background: #060A12;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-4);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gray-light);
  white-space: pre;
  margin: 0;
}

.code-copy-btn {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  border-radius: var(--radius-button);
  border: 1px solid var(--border);
  background: var(--panel-hi);
  color: var(--gray-light);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px var(--space-3);
  cursor: pointer;
}

.code-copy-btn:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-4);
}

summary {
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '▾';
  color: var(--gray);
  font-size: 0.8rem;
}

details[open] summary::after {
  content: '▴';
}

.sticky-action-bar {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: color-mix(in srgb, var(--panel-hi) 92%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-card);
  padding: var(--space-4) var(--space-5);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.35);
  color: var(--gray-light);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

/* Long pill lists (e.g. the module filter with 20+ modules) scroll
   horizontally instead of wrapping into many rows and pushing the rest
   of the page down. */
.filter-bar-scroll {
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.filter-bar-scroll .filter-pill {
  flex-shrink: 0;
}

.filter-pill {
  border-radius: var(--radius-button);
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--gray-light);
  padding: var(--space-2) var(--space-4);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: border-color var(--motion-hover), background var(--motion-hover), color var(--motion-hover);
}

.filter-pill:hover {
  border-color: var(--teal);
  color: var(--white);
}

.filter-pill.active {
  background: var(--teal);
  border-color: var(--teal);
  color: #06201C;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }
  .app-topbar nav {
    display: none;
  }
  .app-topbar nav.nav-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    padding: var(--space-3) var(--space-4);
    gap: var(--space-2);
    z-index: 20;
  }
  .app-topbar nav.nav-open .nav-search {
    margin-left: 0;
  }
  .app-topbar nav.nav-open .nav-search input {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .app-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
  }
  .app-main {
    padding: var(--space-4) var(--space-3);
  }
  .item-surface {
    padding: var(--space-5) var(--space-3);
  }
}