/**
 * rhosocial ActiveRecord — Theme Lab · Core Extensions
 * ═══════════════════════════════════════════════════════════════════════
 * Additional components layered on top of core.css. All styles consume
 * the same CSS vocabulary (--fg, --accent, --radius, etc.), so every
 * theme picks them up automatically.
 *
 * Load order in themes.html:
 *   1. core.css           — base + defaults
 *   2. themes/*.css       — theme tokens + overrides
 *   3. core-extensions.css (THIS FILE) — extra components
 *   4. fonts/*.css        — font pack overrides (highest specificity)
 *
 * Sections:
 *   A. Dropdown (themed select replacement)
 *   B. Radio group
 *   C. Multi-select list
 *   D. Button group (segmented control)
 *   E. Striped table + grid showcase + RTL helper
 *   F. Feature-split section
 *   G. Pricing cards
 *   H. Feature comparison
 *   I. Login / auth card
 *   J. Album / photo grid
 *   K. Carousel (testimonials)
 *   L. Per-theme tweaks (only where really needed)
 */

/* ═══════════════════════════════════════════════════════════════
   A · DROPDOWN — themed replacement for <select>
   Used in the control bar for theme & font pickers.
   ═══════════════════════════════════════════════════════════════ */
.dropdown { position: relative; display: inline-flex; }

.dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 14px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 150ms ease;
  min-width: 170px;
  white-space: nowrap;
}
.dropdown-trigger:hover { border-color: var(--border-strong); }
.dropdown.is-open .dropdown-trigger { border-color: var(--accent); }

.dropdown-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.dropdown-value {
  color: var(--fg);
  font-weight: 500;
  margin-right: auto;
}
.dropdown-caret {
  width: 12px;
  height: 12px;
  color: var(--fg-muted);
  transition: transform 150ms ease;
  flex-shrink: 0;
}
.dropdown.is-open .dropdown-caret { transform: rotate(180deg); color: var(--accent); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 240px;
  max-height: 60vh;
  overflow-y: auto;
  padding: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  z-index: 110;
  display: none;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.dropdown-menu::-webkit-scrollbar { width: 6px; }
.dropdown-menu::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.dropdown.is-open .dropdown-menu { display: block; }

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--fg);
  text-align: left;
  background: transparent;
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  cursor: pointer;
  transition: background 100ms ease;
}
.dropdown-item:hover { background: var(--bg-2); }
.dropdown-item.is-active { background: var(--accent); color: var(--bg); }
.dropdown-item-label { flex: 1; }
.dropdown-item-kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-faint);
  letter-spacing: 0.04em;
  padding-left: 8px;
}
.dropdown-item.is-active .dropdown-item-kbd { color: rgba(255, 255, 255, 0.7); }


/* Section divider inside dropdown menu */
.dropdown-section {
  padding: 10px 12px 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

/* ═══════════════════════════════════════════════════════════════
   B · RADIO GROUP
   ═══════════════════════════════════════════════════════════════ */
.radio-group { display: flex; flex-direction: column; gap: 10px; }
.radio-group.is-horizontal { flex-direction: row; gap: 18px; }

.radio {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--fg);
  cursor: pointer;
  user-select: none;
}
.radio input {
  appearance: none;
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
}
.radio-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--border-strong);
  background: var(--bg);
  position: relative;
  flex-shrink: 0;
  transition: all 150ms ease;
}
.radio:hover .radio-dot { border-color: var(--accent); }
.radio input:checked + .radio-dot {
  border-color: var(--accent);
  background: var(--accent);
}
.radio input:checked + .radio-dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: var(--bg);
  border-radius: 50%;
}

/* ═══════════════════════════════════════════════════════════════
   C · MULTI-SELECT LIST (option-list)
   ═══════════════════════════════════════════════════════════════ */
.option-list {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-elevated);
}

.option-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 100ms ease;
}
.option-item:last-child { border-bottom: none; }
.option-item:hover { background: var(--bg-2); }
.option-item input {
  appearance: none;
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
}

.option-check {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1.5px solid var(--border-strong);
  background: var(--bg);
  flex-shrink: 0;
  position: relative;
  margin-top: 2px;
  transition: all 150ms ease;
}
.option-item input:checked + .option-check {
  background: var(--accent);
  border-color: var(--accent);
}
.option-item input:checked + .option-check::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 4px;
  height: 8px;
  border: solid var(--bg);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.option-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.option-title {
  font-size: 13px;
  color: var(--fg);
  font-weight: 500;
}
.option-desc {
  font-size: 11px;
  color: var(--fg-muted);
}
.option-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  padding: 2px 6px;
  border: 1px solid currentColor;
  border-radius: 4px;
  align-self: center;
}

/* ═══════════════════════════════════════════════════════════════
   D · BUTTON GROUP (segmented control)
   ═══════════════════════════════════════════════════════════════ */
.btn-group {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-elevated);
}
.btn-group-btn {
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
  border: none;
  border-right: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition: all 150ms ease;
}
.btn-group-btn:last-child { border-right: none; }
.btn-group-btn:hover { background: var(--bg-2); color: var(--fg); }
.btn-group-btn.is-active {
  background: var(--fg);
  color: var(--bg);
}

/* ═══════════════════════════════════════════════════════════════
   E · STRIPED TABLE + GRID SHOWCASE + RTL
   ═══════════════════════════════════════════════════════════════ */
.data-table.striped tbody tr:nth-child(even) { background: var(--bg-2); }
.data-table.striped tbody tr:hover { background: color-mix(in srgb, var(--accent) 8%, var(--bg-2)); }

.grid-showcase {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 6px;
}
.grid-cell {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  text-align: center;
}
.grid-cell.is-span-2 { grid-column: span 2; background: var(--accent); color: var(--bg); border-color: var(--accent); }
.grid-cell.is-span-3 { grid-column: span 3; background: var(--bg-elevated); border-color: var(--border-strong); color: var(--fg); }
.grid-cell.is-span-4 { grid-column: span 4; }
.grid-cell.is-span-6 { grid-column: span 6; background: var(--accent-2); color: var(--bg); border-color: var(--accent-2); }
.grid-cell.is-span-12 { grid-column: span 12; background: var(--fg); color: var(--bg); border-color: var(--fg); }

/* RTL support — applies to anything wrapped in [dir="rtl"] */
[dir="rtl"] .feature-num,
[dir="rtl"] .feature-title,
[dir="rtl"] .feature-desc { text-align: right; }
[dir="rtl"] .showcase-point { flex-direction: row-reverse; }
[dir="rtl"] .dropdown-menu { left: 0; right: auto; }

/* ═══════════════════════════════════════════════════════════════
   F · FEATURE-SPLIT SECTION (hero-style with visual)
   ═══════════════════════════════════════════════════════════════ */
.feature-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .feature-split { grid-template-columns: 1fr 1fr; gap: 60px; }
  .feature-split.is-reversed .feature-split-text { order: 2; }
}

.feature-split-text .section-label { margin-bottom: 14px; }
.feature-split-text .section-title { font-size: clamp(28px, 4vw, 44px); margin-bottom: 18px; max-width: 18ch; }
.feature-split-text .section-intro { margin-bottom: 24px; max-width: none; }

.feature-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 900px) {
  .feature-detail { grid-template-columns: 1fr 1fr; gap: 48px; }
}

.feature-detail-code [data-component="tabs-switcher"] {
  gap: 8px;
}

.feature-visual {
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}
.feature-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 25% 25%, rgba(255,255,255,0.35), transparent 60%);
}
.feature-visual::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -20%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, var(--accent-3), transparent 70%);
  opacity: 0.6;
}
.feature-visual-label {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 6px 12px;
  background: rgba(0,0,0,0.3);
  color: #fff;
  backdrop-filter: blur(8px);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 2;
}

/* ═══════════════════════════════════════════════════════════════
   G · PRICING CARDS (3-tier)
   ═══════════════════════════════════════════════════════════════ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  align-items: stretch;
}

.pricing-card {
  padding: 32px 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  transition: all 200ms ease;
}
.pricing-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.pricing-card.is-featured {
  border-color: var(--accent);
  border-width: 2px;
  background: color-mix(in srgb, var(--accent) 3%, var(--bg-elevated));
}

.pricing-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 14px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-tier {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.pricing-price {
  font-family: var(--font-display);
  color: var(--fg);
  line-height: 1;
}
.pricing-price .amount {
  font-size: 44px;
  font-weight: var(--display-weight);
  letter-spacing: var(--display-tracking);
}
.pricing-price .per {
  font-size: 13px;
  color: var(--fg-muted);
  margin-left: 6px;
  font-family: var(--font-body);
  font-weight: 400;
}
.pricing-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.5;
}

.pricing-features {
  list-style: none;
  padding: 18px 0 0;
  margin: 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--fg);
  line-height: 1.4;
}
.pricing-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  width: 16px;
}
.pricing-features li.is-disabled {
  color: var(--fg-faint);
}
.pricing-features li.is-disabled::before {
  content: '—';
  color: var(--fg-faint);
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
  margin-top: auto;
}

/* ═══════════════════════════════════════════════════════════════
   H · FEATURE COMPARISON TABLE
   ═══════════════════════════════════════════════════════════════ */
.feature-compare {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
}
.feature-compare table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.feature-compare th,
.feature-compare td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.feature-compare thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: var(--bg-2);
  text-align: center;
}
.feature-compare thead th:first-child { text-align: left; }
.feature-compare tbody td {
  text-align: center;
  color: var(--fg);
}
.feature-compare tbody td:first-child {
  text-align: left;
  font-weight: 500;
}
.feature-compare tbody tr:last-child td { border-bottom: none; }
.feature-compare tbody tr:hover { background: var(--bg-2); }
.feature-compare .col-featured {
  background: color-mix(in srgb, var(--accent) 4%, var(--bg-elevated));
}

.check-yes {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 11px;
  font-weight: 700;
}
.check-no {
  display: inline-block;
  color: var(--fg-faint);
  font-size: 14px;
  font-weight: 400;
}
.check-warn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}

/* ═══════════════════════════════════════════════════════════════
   I · LOGIN / AUTH CARD
   ═══════════════════════════════════════════════════════════════ */
.login-card {
  max-width: 420px;
  margin: 0 auto;
  padding: 36px 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.login-header { text-align: center; }
.login-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: var(--display-weight);
  letter-spacing: var(--display-tracking);
  color: var(--fg);
  margin-bottom: 6px;
}
.login-sub {
  font-size: 14px;
  color: var(--fg-muted);
}
.login-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}
.login-link {
  color: var(--accent);
  text-decoration: underline;
  font-size: 13px;
}
.login-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 4px 0;
  color: var(--fg-faint);
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.login-oauth {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.login-oauth .btn {
  width: 100%;
  justify-content: center;
}
.login-footer {
  text-align: center;
  font-size: 12px;
  color: var(--fg-muted);
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════════════════════
   J · ALBUM / PHOTO GRID
   ═══════════════════════════════════════════════════════════════ */
.album {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.album-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: transform 200ms ease;
}
.album-item:hover { transform: translateY(-3px); }
.album-thumb {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
}
.album-item:nth-child(6n+1) .album-thumb { background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.album-item:nth-child(6n+2) .album-thumb { background: linear-gradient(135deg, var(--accent-2), var(--accent-3)); }
.album-item:nth-child(6n+3) .album-thumb { background: linear-gradient(135deg, var(--accent-3), var(--accent)); }
.album-item:nth-child(6n+4) .album-thumb { background: linear-gradient(135deg, var(--fg), var(--accent)); }
.album-item:nth-child(6n+5) .album-thumb { background: linear-gradient(135deg, var(--accent), var(--fg)); }
.album-item:nth-child(6n+6) .album-thumb { background: linear-gradient(225deg, var(--accent-2), var(--accent-3)); }
.album-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.35), transparent 60%);
}
.album-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 10px;
  background: rgba(0,0,0,0.35);
  color: #fff;
  backdrop-filter: blur(4px);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.album-caption {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  gap: 8px;
}
.album-title { color: var(--fg); font-weight: 500; }
.album-meta { color: var(--fg-faint); font-family: var(--font-mono); flex-shrink: 0; }

/* ═══════════════════════════════════════════════════════════════
   K · CAROUSEL (horizontal scroll-snap)
   ═══════════════════════════════════════════════════════════════ */
.carousel {
  margin-left: calc(var(--section-x, 0px) * -1);
  margin-right: calc(var(--section-x, 0px) * -1);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 8px;
}
.carousel::-webkit-scrollbar { display: none; }
.carousel-track {
  display: flex;
  gap: 16px;
  padding: 8px clamp(20px, 5vw, 80px);
}
.carousel-card {
  flex: 0 0 340px;
  padding: 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: border-color 200ms ease, transform 200ms ease;
}
.carousel-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.carousel-quote {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: var(--display-tracking);
  color: var(--fg);
  flex: 1;
}
.carousel-quote::before {
  content: '"';
  font-size: 1.8em;
  line-height: 0;
  color: var(--accent);
  vertical-align: -0.2em;
  margin-right: 4px;
}

.carousel-author { display: flex; align-items: center; gap: 12px; }
.carousel-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  font-size: 13px;
  flex-shrink: 0;
}
.carousel-name { font-size: 13px; color: var(--fg); font-weight: 600; line-height: 1.3; }
.carousel-role { font-size: 11px; color: var(--fg-muted); font-family: var(--font-mono); letter-spacing: 0.04em; }

.carousel-controls {
  display: flex; gap: 6px;
  margin-top: 20px;
  justify-content: flex-end;
}
.carousel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-strong);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 150ms ease;
}
.carousel-dot.is-active { background: var(--accent); width: 24px; border-radius: 999px; }

/* ═══════════════════════════════════════════════════════════════
   L · PER-THEME TWEAKS
   Only the themes where default dropdown/components need personality.
   ═══════════════════════════════════════════════════════════════ */

/* Terminal — dashed dropdown borders, zero radius, phosphor glow */
[data-theme="terminal"] .dropdown-menu { border-style: dashed; border-radius: 0; box-shadow: 0 8px 24px rgba(0, 255, 156, 0.15); }
[data-theme="terminal"] .dropdown-trigger { border-radius: 0; }
[data-theme="terminal"] .dropdown-item { border-radius: 0; }
[data-theme="terminal"] .btn-group { border-radius: 0; border-style: dashed; }
[data-theme="terminal"] .pricing-card { border-style: dashed; border-radius: 0; }
[data-theme="terminal"] .login-card { border-style: dashed; border-radius: 0; }
[data-theme="terminal"] .carousel-card { border-style: dashed; border-radius: 0; }
[data-theme="terminal"] .radio-dot { border-radius: 0; }
[data-theme="terminal"] .option-check { border-radius: 0; }
[data-theme="terminal"] .feature-visual { border-radius: 0; }
[data-theme="terminal"] .album-thumb { border-radius: 0; }

/* Brutalist — hard offset shadows everywhere */
[data-theme="brutalist"] .dropdown-trigger { border: 2px solid var(--fg); box-shadow: 3px 3px 0 var(--fg); }
[data-theme="brutalist"] .dropdown-menu { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .dropdown-item { border-radius: 0; font-weight: 600; }
[data-theme="brutalist"] .btn-group { border: 3px solid var(--fg); box-shadow: 4px 4px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .btn-group-btn { border-right-width: 2px; }
[data-theme="brutalist"] .pricing-card { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .pricing-card.is-featured { background: var(--accent); box-shadow: 8px 8px 0 var(--fg); }
[data-theme="brutalist"] .login-card { border: 3px solid var(--fg); box-shadow: 8px 8px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .carousel-card { border: 3px solid var(--fg); box-shadow: 5px 5px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .feature-compare { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .radio-dot { border: 2px solid var(--fg); }
[data-theme="brutalist"] .option-check { border: 2px solid var(--fg); border-radius: 0; }
[data-theme="brutalist"] .feature-visual { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--fg); border-radius: 0; }
[data-theme="brutalist"] .album-thumb { border: 2px solid var(--fg); border-radius: 0; }

/* Matrix — neon glow on dropdown & active items */
[data-theme="matrix"] .dropdown-menu { box-shadow: 0 0 24px rgba(0, 255, 65, 0.3); border-radius: 0; }
[data-theme="matrix"] .dropdown-trigger { border-radius: 0; }
[data-theme="matrix"] .dropdown-item { border-radius: 0; font-family: var(--font-mono); text-transform: uppercase; font-size: 11px; letter-spacing: 0.08em; }
[data-theme="matrix"] .dropdown-item.is-active { box-shadow: 0 0 8px rgba(0, 255, 65, 0.5); }
[data-theme="matrix"] .btn-group { border-radius: 0; }
[data-theme="matrix"] .pricing-card { border-radius: 0; }
[data-theme="matrix"] .pricing-card.is-featured { box-shadow: 0 0 24px rgba(0, 255, 65, 0.2); }
[data-theme="matrix"] .login-card { border-radius: 0; box-shadow: 0 0 32px rgba(0, 255, 65, 0.15); }
[data-theme="matrix"] .carousel-card { border-radius: 0; }
[data-theme="matrix"] .radio-dot { border-radius: 0; }
[data-theme="matrix"] .option-check { border-radius: 0; }
[data-theme="matrix"] .feature-visual { border-radius: 0; }
[data-theme="matrix"] .album-thumb { border-radius: 0; }

/* Synthwave — magenta glow */
[data-theme="synthwave"] .dropdown-menu { box-shadow: 0 0 28px rgba(255, 43, 214, 0.25); }
[data-theme="synthwave"] .pricing-card.is-featured { box-shadow: 0 0 32px rgba(255, 43, 214, 0.3); }

/* Memphis — hard colorful offset shadows */
[data-theme="memphis"] .dropdown-trigger { border: 2px solid var(--fg); box-shadow: 3px 3px 0 var(--accent-2); }
[data-theme="memphis"] .dropdown-menu { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--accent); border-radius: 12px; }
[data-theme="memphis"] .btn-group { border: 2px solid var(--fg); box-shadow: 3px 3px 0 var(--fg); }
[data-theme="memphis"] .pricing-card { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--accent); }
[data-theme="memphis"] .pricing-card:nth-child(2) { box-shadow: 6px 6px 0 var(--accent-2); }
[data-theme="memphis"] .pricing-card:nth-child(3) { box-shadow: 6px 6px 0 var(--accent-3); }
[data-theme="memphis"] .login-card { border: 3px solid var(--fg); box-shadow: 8px 8px 0 var(--accent-3); }
[data-theme="memphis"] .feature-compare { border: 3px solid var(--fg); box-shadow: 6px 6px 0 var(--accent-2); }

/* Riso — paper + spot-ink shadow */
[data-theme="riso"] .dropdown-menu { border: 2px solid var(--fg); box-shadow: 4px 4px 0 var(--accent-2); border-radius: 4px; }
[data-theme="riso"] .dropdown-trigger { border: 2px solid var(--fg); box-shadow: 2px 2px 0 var(--accent); }

/* ═══════════════════════════════════════════════════════
   M · TABS SWITCHER — N-dimension tab switcher
   ═══════════════════════════════════════════════════════ */

[data-component="tabs-switcher"] {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tabs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 0;
}

.tabs-row:first-child {
  padding-top: 0;
}

.tabs-row .tab {
  padding: 6px 14px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 120ms ease;
}

.tabs-row .tab:hover {
  color: var(--fg);
  border-color: var(--border-strong);
}

.tabs-row .tab.is-active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.tabs-display {
  margin-top: 8px;
}

.tabs-display .code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.tabs-display .code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.tabs-display .code-lang {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
}

.tabs-display .code-body {
  padding: 12px 16px;
  overflow-x: auto;
  background: var(--code-bg);
}

.tabs-display .code-body pre,
.tabs-display .code-body code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--fg);
  background: transparent;
  margin: 0;
  padding: 0;
}

/* Override hljs colors to use CSS variables */
.tabs-display .hljs {
  background: transparent;
  color: var(--fg);
}

.tabs-display .hljs-keyword,
.tabs-display .hljs-selector-tag,
.tabs-display .hljs-built_in { color: var(--accent, #00ff88); }
.tabs-display .hljs-string,
.tabs-display .hljs-attr { color: var(--accent-2, #ff6b35); }
.tabs-display .hljs-number,
.tabs-display .hljs-literal { color: var(--accent-3, #ff00ff); }
.tabs-display .hljs-comment { color: var(--fg-muted); font-style: italic; }
.tabs-display .hljs-function { color: var(--fg); }
.tabs-display .hljs-class { color: var(--fg); }
.tabs-display .hljs-params { color: var(--fg); }
.tabs-display .hljs-variable,
.tabs-display .hljs-template-variable { color: var(--fg); }

.tabs-empty {
  padding: 24px;
  text-align: center;
  color: var(--fg-muted);
  font-size: 14px;
}

[data-theme="terminal"] .tabs-row .tab.is-active {
  background: #00ff88;
  border-color: #00ff88;
  color: #0d0d0d;
}

/* Component Architecture section */
.arch-comp-panels {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0 24px;
  align-items: start;
  margin-top: 48px;
}
@media (max-width: 900px) {
  .arch-comp-panels {
    grid-template-columns: 1fr;
    gap: 24px 0;
  }
  .arch-comp-connector { transform: rotate(90deg); }
}
.arch-comp-panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  background: var(--bg-elevated);
}
.arch-comp-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: 100px;
  background: var(--accent);
  color: var(--bg);
  margin-bottom: 10px;
}
.arch-comp-panel-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--fg);
}
.arch-comp-panel-desc {
  font-size: 0.88rem;
  color: var(--fg-muted);
  opacity: .8;
  margin: 0 0 16px;
  line-height: 1.55;
}
/* Connector column */
.arch-comp-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  gap: 6px;
  min-width: 80px;
}
.arch-comp-connector-arrow {
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1;
}
.arch-comp-connector-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--accent);
}
.arch-comp-connector-note {
  font-size: 0.68rem;
  color: var(--fg-muted);
  opacity: .7;
  text-align: center;
  margin-top: 4px;
  white-space: nowrap;
}
/* Notes row */
.arch-comp-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
@media (max-width: 700px) {
  .arch-comp-notes { grid-template-columns: 1fr; }
}
.arch-comp-note {
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.arch-comp-note-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--accent);
  margin-bottom: 6px;
}
.arch-comp-note-desc {
  font-size: 0.85rem;
  color: var(--fg);
  opacity: .85;
  line-height: 1.5;
  margin: 0;
}

/* Arch Comp CSS-native */
#arch-comp .arch-diagram {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  gap: 0;
  align-items: start;
}
@media (max-width: 680px) {
  #arch-comp .arch-diagram {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
  #arch-comp .arch-connector { transform: rotate(90deg); }
}
.arch-col-frame {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.arch-col-frame-header {
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.arch-col-frame-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.arch-col-frame-dot.async { background: var(--fg-muted); }
.arch-col-frame-title {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg);
}
.arch-col-frame-body {
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
@media (max-width: 480px) {
  .arch-col-frame-body { grid-template-columns: 1fr; }
}
.arch-subgroup {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.arch-subgroup-label {
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-align: center;
  margin-bottom: 2px;
}
.arch-subgroup.async .arch-subgroup-label {
  border-color: var(--fg-muted);
  color: var(--fg-muted);
}
.arch-node {
  position: relative;
  padding: 7px 10px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg-2);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--fg);
  line-height: 1.3;
  transition: border-color .18s, background .18s, transform .18s;
  opacity: 0;
  transform: translateY(14px);
}
.arch-node.is-root {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
  font-family: var(--font-body);
  font-size: 0.82rem;
}
.arch-subgroup.async .arch-node.is-root {
  background: var(--fg-muted);
  border-color: var(--fg-muted);
}
.arch-node:hover, .arch-node:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
  outline: none;
  z-index: 2;
}
.arch-subgroup.async .arch-node:hover {
  border-color: var(--fg-muted);
}
.arch-node.is-visible {
  animation: archNodeIn .38s ease forwards;
}
@keyframes archNodeIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
.arch-node.is-child::before {
  content: '';
  position: absolute;
  left: -10px; top: 50%;
  width: 8px; height: 1px;
  background: var(--border);
}
.arch-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 56px;
  gap: 20px;
  height: 100%;
}
.arch-conn-track {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.arch-conn-line {
  width: 2px;
  height: 28px;
  border-radius: 1px;
}
.arch-conn-line.sync  { background: var(--accent); }
.arch-conn-line.async { background: var(--fg-muted); }
.arch-conn-arrow {
  font-size: 1.1rem;
  line-height: 1;
}
.arch-conn-arrow.sync  { color: var(--accent); }
.arch-conn-arrow.async { color: var(--fg-muted); }
.arch-conn-label {
  font-family: var(--font-body);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}
.arch-conn-label.sync  { color: var(--accent); }
.arch-conn-label.async { color: var(--fg-muted); }
.arch-pairing {
  margin-top: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.arch-pairing-row {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  align-items: center;
  padding: 10px 20px;
  gap: 8px;
  transition: background .15s;
}
.arch-pairing-row:first-child {
  border-bottom: 1px solid var(--border);
}
.arch-pairing-row:hover { background: var(--bg-2); }
.arch-pairing-side {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 5px;
  text-align: center;
}
.arch-pairing-side.ar-sync, .arch-pairing-side.be-sync { background: var(--bg-2); color: var(--accent); border: 1px solid var(--accent); }
.arch-pairing-side.ar-async, .arch-pairing-side.be-async { background: var(--bg-2); color: var(--fg-muted); border: 1px solid var(--fg-muted); }
.arch-pairing-mid {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  opacity: .5;
}
.arch-pairing-mid.sync  { color: var(--accent); }
.arch-pairing-mid.async { color: var(--fg-muted); }
.arch-pairing-note {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--fg-muted);
  padding: 0 8px;
}
#arch-tip {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: opacity .14s ease;
  max-width: 280px;
  min-width: 180px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  box-shadow: 0 6px 24px rgba(0,0,0,.22);
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--fg);
}
#arch-tip.show { opacity: 1; }
#arch-tip .tip-name {
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 5px;
}
#arch-tip code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-2);
  padding: 1px 4px;
  border-radius: 3px;
}


[data-theme="terminal"] .tabs-row .tab.is-active
[data-theme="wireframe"] .dropdown-menu { border: 2px solid var(--fg); transform: rotate(-0.3deg); }
[data-theme="wireframe"] .dropdown-item { font-family: var(--font-body); font-weight: 700; letter-spacing: 0; text-transform: none; }

/* Newsprint — stark tabloid */
[data-theme="newsprint"] .dropdown-menu { border: 2px solid var(--fg); box-shadow: 4px 4px 0 var(--fg); border-radius: 0; }
[data-theme="newsprint"] .dropdown-trigger { border: 2px solid var(--fg); }
[data-theme="newsprint"] .dropdown-item { font-family: 'Archivo Black', sans-serif; text-transform: uppercase; }

/* Tokyo — IDE popup */
[data-theme="tokyo"] .dropdown-menu { border-radius: 0; box-shadow: 0 8px 32px rgba(0,0,0,0.5); }
[data-theme="tokyo"] .dropdown-trigger { border-radius: 4px; font-family: var(--font-mono); }

/* Blueprint — dashed technical dropdown */
[data-theme="blueprint"] .dropdown-trigger { border: 1px dashed var(--border-strong); border-radius: 0; }
[data-theme="blueprint"] .dropdown-menu { border: 1px dashed var(--accent); border-radius: 0; }

/* Noir — double hairline */
[data-theme="noir"] .dropdown-menu { border: 0.5px solid var(--accent); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }

/* Aurora — glass dropdown */
[data-theme="aurora"] .dropdown-menu { background: rgba(15, 15, 35, 0.85); backdrop-filter: blur(20px); border-color: rgba(255,255,255,0.15); }

/* Frutiger — glossy dropdown */
[data-theme="frutiger"] .dropdown-menu { background: linear-gradient(180deg, #fff, #EAF5FB); box-shadow: 0 8px 32px rgba(0,168,225,0.2); border-radius: 16px; }
[data-theme="frutiger"] .dropdown-trigger { background: linear-gradient(180deg, #fff, #EAF5FB); box-shadow: inset 0 1px 0 rgba(255,255,255,0.9); }

/* Candy — puffy shadow dropdown */
[data-theme="candy"] .dropdown-menu { box-shadow: 0 12px 36px rgba(255, 110, 199, 0.22); border-radius: 20px; }

/* Chalkboard — dashed chalk border */
[data-theme="chalkboard"] .dropdown-menu { border: 1.5px dashed var(--border-strong); }
[data-theme="chalkboard"] .dropdown-item { font-family: var(--font-body); font-weight: 700; letter-spacing: 0; text-transform: none; }

/* Anderson — pastel framed dropdown, centered text */
[data-theme="anderson"] .dropdown-menu { border: 1px solid var(--fg); }
[data-theme="anderson"] .dropdown-item { font-family: var(--font-display); font-style: italic; }

/* Sumi — subtle, keep it soft */
[data-theme="sumi"] .dropdown-item { font-family: var(--font-body); font-style: italic; }

/* Steel — metallic bezel */
[data-theme="steel"] .dropdown-menu { border-radius: 4px; box-shadow: 0 8px 32px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.06); }
[data-theme="steel"] .dropdown-item { font-family: var(--font-mono); }

/* Botanical — ornate */
[data-theme="botanical"] .dropdown-menu { border: 0.5px solid var(--accent); }
[data-theme="botanical"] .dropdown-item { font-family: var(--font-display); font-style: italic; }