/* ══════════════════════════════════════════════════════════════════
   VIUCraft URL Builder
   Two-panel tool: controls (left) + live preview (right). Matches the
   docs shell — uses the --docs-* variables defined in docs.css (loaded
   first). Blue → cyan accents, dark mode via the --docs-* overrides.
   All IDs come from the template; this only styles.
   ══════════════════════════════════════════════════════════════════ */

.url-builder-full-width { max-width: 100% !important; }
.url-builder {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 140px);
  min-height: 600px;
  border: 1px solid var(--docs-border-color);
  border-radius: var(--radius-lg);
  background: var(--docs-bg-primary);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* ───── toolbar ───── */
.url-builder-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem 1.1rem; background: var(--docs-bg-tertiary); border-bottom: 1px solid var(--docs-border-color); }
.url-builder-toolbar-left { display: flex; align-items: center; gap: 1rem; min-width: 0; }
.url-builder-title { display: flex; align-items: center; gap: 0.55rem; margin: 0; font-size: var(--font-size-base); font-weight: 700; color: var(--docs-text-primary); }
.url-builder-title i { color: var(--docs-accent); }
.url-builder-breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-size: var(--font-size-sm); color: var(--docs-text-muted); }
.url-builder-breadcrumb a { color: var(--docs-text-secondary); text-decoration: none; }
.url-builder-breadcrumb a:hover { color: var(--docs-accent-strong); }
.url-builder-breadcrumb-sep { opacity: 0.5; }
@media (max-width: 640px) { .url-builder-breadcrumb { display: none; } }
.url-builder-toolbar-right { display: flex; gap: 0.4rem; }
.url-builder-toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--docs-border-strong);
  background: var(--docs-bg-primary);
  color: var(--docs-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.url-builder-toolbar-btn:hover:not(:disabled) { background: var(--docs-accent-soft); color: var(--docs-accent-strong); border-color: var(--docs-accent-ring); }
.url-builder-toolbar-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.url-builder-toolbar-btn-reset:hover:not(:disabled) { color: var(--primary-red, #ef4444); border-color: rgba(239, 68, 68, 0.4); background: rgba(239, 68, 68, 0.08); }
@media (max-width: 640px) { .url-builder-toolbar-btn-label { display: none; } }

/* ───── panels ───── */
.url-builder-panels { display: flex; flex: 1; min-height: 0; }
.url-builder-panel { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.url-builder-panel-controls { flex: 0 0 44%; border-right: 1px solid var(--docs-border-color); }
.url-builder-panel-preview, .url-builder-panel-output { flex: 1; background: var(--docs-bg-secondary); }
.url-builder-panel-scroll { flex: 1; overflow-y: auto; padding: 1.1rem; min-height: 0; }
.url-builder-resize-handle { flex: 0 0 7px; cursor: col-resize; display: grid; place-items: center; background: var(--docs-bg-tertiary); border-right: 1px solid var(--docs-border-color); }
.url-builder-resize-handle-grip { width: 3px; height: 34px; border-radius: var(--radius-full); background: var(--docs-border-strong); transition: background var(--transition-fast); }
.url-builder-resize-handle:hover .url-builder-resize-handle-grip { background: var(--docs-accent); }
@media (max-width: 860px) {
  .url-builder-panels { flex-direction: column; }
  .url-builder-panel-controls { flex: none; border-right: none; border-bottom: 1px solid var(--docs-border-color); }
  .url-builder-resize-handle { display: none; }
}

/* ───── sections ───── */
.url-builder-section { margin-bottom: 1rem; border: 1px solid var(--docs-border-color); border-radius: var(--radius-md); background: var(--docs-bg-primary); overflow: hidden; }
#urlBuilderOpsSection { overflow: visible; }
#urlBuilderOpsSection .url-builder-section-header { border-radius: var(--radius-md) var(--radius-md) 0 0; position: relative; }
.url-builder-section-header { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; padding: 0.7rem 0.9rem; background: var(--docs-bg-tertiary); border-bottom: 1px solid var(--docs-border-color); }
.url-builder-section-header-toggle { cursor: pointer; }
.url-builder-section-title { display: flex; align-items: center; gap: 0.5rem; margin: 0; font-size: var(--font-size-sm); font-weight: 700; color: var(--docs-text-primary); }
.url-builder-section-title i { color: var(--docs-accent); }
.url-builder-section-chevron { color: var(--docs-text-muted); transition: transform var(--transition-base); }
.url-builder-section-header-toggle[aria-expanded="true"] .url-builder-section-chevron,
.url-builder-section.is-open .url-builder-section-chevron { transform: rotate(180deg); }
.url-builder-section-body { padding: 0.9rem; display: flex; flex-direction: column; gap: 0.85rem; }
.url-builder-hints-badge { font-size: 0.62rem; font-weight: 700; color: #fff; background: var(--primary-orange, #f59e0b); border-radius: var(--radius-full); padding: 0.1rem 0.45rem; margin-left: auto; margin-right: 0.5rem; }

/* image source tabs */
.url-builder-img-tabs, .url-builder-embed-tabs { display: flex; gap: 0.3rem; padding: 0.25rem; background: var(--docs-bg-tertiary); border-radius: var(--radius-md); }
.url-builder-img-tab, .url-builder-embed-tab {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.6rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--docs-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  font-family: var(--docs-mono);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.url-builder-img-tab.active, .url-builder-embed-tab.active { background: var(--docs-bg-primary); color: var(--docs-accent-strong); box-shadow: var(--shadow-sm); }
[data-theme="dark"] .url-builder-img-tab.active, [data-theme="dark"] .url-builder-embed-tab.active { color: #7dd3fc; }

/* fields */
.url-builder-field { display: flex; flex-direction: column; gap: 0.35rem; }
.url-builder-label { font-size: var(--font-size-xs); font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; color: var(--docs-text-muted); }
.url-builder-input {
  width: 100%;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--docs-input-border);
  background: var(--docs-input-bg);
  color: var(--docs-text-primary);
  padding: 0 0.8rem;
  font-size: var(--font-size-sm);
  font-family: var(--docs-mono);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.url-builder-input:focus { outline: none; border-color: var(--docs-accent); box-shadow: 0 0 0 4px var(--docs-accent-ring); }
.url-builder-input-group { display: flex; }
.url-builder-input-group .url-builder-input { flex: 1; border-radius: var(--radius-md) 0 0 var(--radius-md); }
.url-builder-input-addon { width: 42px; border: 1px solid var(--docs-input-border); border-left: none; border-radius: 0 var(--radius-md) var(--radius-md) 0; background: var(--docs-grad); color: #fff; cursor: pointer; }
.url-builder-placeholder-text { font-size: var(--font-size-xs); color: var(--docs-text-muted); margin: 0; display: flex; align-items: center; gap: 0.4rem; }

/* selected image chip */
.url-builder-img-selected { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem; border: 1px solid var(--docs-border-color); border-radius: var(--radius-md); background: var(--docs-bg-tertiary); }
.url-builder-img-selected-thumb { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--docs-bg-primary) center/cover; flex-shrink: 0; border: 1px solid var(--docs-border-color); }
.url-builder-img-selected-info { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.url-builder-img-selected-name { font-size: var(--font-size-sm); font-weight: 600; color: var(--docs-text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.url-builder-img-selected-meta { font-size: var(--font-size-xs); color: var(--docs-text-muted); }
.url-builder-img-change-btn { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.35rem 0.7rem; border: 1px solid var(--docs-border-strong); border-radius: var(--radius-md); background: var(--docs-bg-primary); color: var(--docs-text-secondary); font-size: var(--font-size-xs); font-weight: 600; cursor: pointer; }
.url-builder-img-change-btn:hover { color: var(--docs-accent-strong); border-color: var(--docs-accent-ring); }
.url-builder-img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); gap: 0.5rem; }

/* operations */
.url-builder-add-op-btn { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.35rem 0.7rem; border: 1px solid var(--docs-accent-ring); border-radius: var(--radius-md); background: var(--docs-accent-soft); color: var(--docs-accent-strong); font-size: var(--font-size-xs); font-weight: 700; cursor: pointer; transition: background var(--transition-fast); }
.url-builder-add-op-btn:hover { background: var(--docs-grad); color: #fff; border-color: transparent; }
[data-theme="dark"] .url-builder-add-op-btn { color: #7dd3fc; }
.url-builder-op-stack { display: flex; flex-direction: column; gap: 0.5rem; }
.url-builder-op-empty { padding: 0.5rem 0; }
.url-builder-op-item { display: flex; align-items: center; gap: 0.6rem; padding: 0.6rem 0.75rem; border: 1px solid var(--docs-border-color); border-radius: var(--radius-md); background: var(--docs-bg-tertiary); }
.url-builder-op-item-name { font-size: var(--font-size-sm); font-weight: 600; color: var(--docs-text-primary); }

/* format buttons */
.url-builder-format-btns { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.url-builder-format-btn { padding: 0.45rem 0.9rem; border: 1px solid var(--docs-border-strong); border-radius: var(--radius-md); background: var(--docs-bg-primary); color: var(--docs-text-secondary); font-size: var(--font-size-xs); font-weight: 700; cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast); }
.url-builder-format-btn:hover { border-color: var(--docs-accent-ring); }
.url-builder-format-btn.active { background: var(--docs-grad); color: #fff; border-color: transparent; }

/* ───── quality slider ───── */
.q-control {
  --q-accent: #2563eb;
  --q-accent-2: #06b6d4;
  --q-empty: rgba(15, 23, 42, 0.10);
  --q-h: 8px;
  --q-pct: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-top: 0.35rem;
}
[data-theme="dark"] .q-control { --q-empty: rgba(255, 255, 255, 0.13); }
.q-control[data-track="minimal"] { --q-h: 5px; }
.q-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.75rem; }
.q-label { font-size: var(--font-size-xs); font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; color: var(--docs-text-muted); margin: 0; }
.q-readout { display: flex; align-items: baseline; gap: 0.5rem; }
.q-value { font-family: var(--docs-mono); font-size: 1.15rem; font-weight: 700; line-height: 1; color: var(--docs-accent-strong); font-variant-numeric: tabular-nums; }
[data-theme="dark"] .q-control .q-value { color: #7dd3fc; }
.q-tier { font-size: var(--font-size-xs); font-weight: 600; color: var(--docs-text-muted); }
.q-slider { position: relative; padding: 0.55rem 0; }
.q-range {
  -webkit-appearance: none; appearance: none;
  display: block; width: 100%; height: 22px; margin: 0;
  background: transparent; cursor: pointer;
}
.q-range::-webkit-slider-runnable-track {
  height: var(--q-h); border-radius: var(--radius-full);
  background-color: var(--q-empty);
  background-image: linear-gradient(90deg, var(--q-accent), var(--q-accent-2));
  background-repeat: no-repeat;
  background-size: var(--q-pct) 100%;
}
.q-range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 2px solid var(--q-accent-2);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.32);
  margin-top: calc((var(--q-h) - 20px) / 2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.q-range:hover::-webkit-slider-thumb { transform: scale(1.1); }
.q-range:focus-visible::-webkit-slider-thumb { outline: none; box-shadow: 0 1px 3px rgba(15, 23, 42, 0.32), 0 0 0 6px var(--docs-accent-ring); }
.q-range::-moz-range-track { height: var(--q-h); border-radius: var(--radius-full); background: var(--q-empty); }
.q-range::-moz-range-progress { height: var(--q-h); border-radius: var(--radius-full); background: var(--q-accent-2); }
.q-range::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 2px solid var(--q-accent-2); box-shadow: 0 1px 3px rgba(15, 23, 42, 0.32); }
.q-range:focus-visible::-moz-range-thumb { box-shadow: 0 1px 3px rgba(15, 23, 42, 0.32), 0 0 0 6px var(--docs-accent-ring); }
.q-ticks { position: absolute; left: 10px; right: 10px; top: 50%; display: none; justify-content: space-between; pointer-events: none; }
.q-control[data-ticks="on"] .q-ticks { display: flex; }
.q-ticks span { width: 2px; height: 7px; border-radius: 2px; background: var(--docs-border-strong); transform: translateY(-50%); }
.q-bubble {
  position: absolute; top: -6px; left: 0;
  transform: translate(-50%, -100%);
  padding: 0.2rem 0.5rem; border-radius: var(--radius-md);
  background: var(--docs-text-primary); color: var(--docs-bg-primary);
  font-family: var(--docs-mono); font-size: 0.72rem; font-weight: 700;
  line-height: 1; white-space: nowrap; pointer-events: none;
  opacity: 0; transition: opacity var(--transition-fast);
  box-shadow: var(--shadow-md);
}
.q-bubble::after { content: ""; position: absolute; left: 50%; top: 100%; transform: translateX(-50%); border: 4px solid transparent; border-top-color: var(--docs-text-primary); }
.q-control[data-bubble="on"] .q-slider:hover .q-bubble,
.q-control[data-bubble="on"] .q-range:focus-visible ~ .q-bubble,
.q-control[data-bubble="on"].is-dragging .q-bubble { opacity: 1; }
.q-presets { display: none; gap: 0.4rem; flex-wrap: wrap; }
.q-control[data-chips="on"] .q-presets { display: flex; }
.q-preset {
  flex: 1; min-width: 0;
  padding: 0.4rem 0.5rem; border-radius: var(--radius-md);
  border: 1px solid var(--docs-border-strong); background: var(--docs-bg-primary);
  color: var(--docs-text-secondary); font-size: var(--font-size-xs); font-weight: 600;
  cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  display: flex; flex-direction: column; align-items: center; gap: 0.1rem;
}
.q-preset small { font-family: var(--docs-mono); font-size: 0.62rem; opacity: 0.7; font-weight: 500; }
.q-preset:hover { border-color: var(--docs-accent-ring); color: var(--docs-accent-strong); }
.q-preset.active { border-color: transparent; background: var(--docs-grad); color: #fff; }
.q-preset.active small { opacity: 0.85; }
.q-hint { font-size: var(--font-size-xs); color: var(--docs-text-muted); margin: 0; line-height: 1.5; }
.q-hint .q-est { font-family: var(--docs-mono); font-weight: 600; color: var(--docs-text-secondary); }

/* generated url */
.url-builder-url-output { padding: 0.85rem; border-radius: var(--radius-md); background: transparent; }
.url-builder-url-output .url-builder-placeholder-text { color: #6b7191; }
.url-builder-url-string { font-family: var(--docs-mono); font-size: 0.78rem; line-height: 1.6; color: #9fd0ff; word-break: break-all; }
.url-builder-url-copy-btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.4rem 0.8rem; border: none; border-radius: var(--radius-md); background: var(--docs-grad); color: #fff; font-size: var(--font-size-xs); font-weight: 700; cursor: pointer; }

/* embed output */
.url-builder-embed-output { padding: 0.85rem; border-radius: var(--radius-md); background: var(--docs-code-bg); font-family: var(--docs-mono); font-size: 0.76rem; line-height: 1.6; color: #cdd6f4; word-break: break-all; }
.url-builder-section-body-collapsible { gap: 0.85rem; }

/* hints */
.url-builder-hints-list { display: flex; flex-direction: column; gap: 0.5rem; }
.url-builder-hint { display: flex; gap: 0.5rem; padding: 0.6rem 0.75rem; border-radius: var(--radius-md); background: rgba(245, 158, 11, 0.1); border: 1px solid rgba(245, 158, 11, 0.25); font-size: var(--font-size-xs); color: var(--docs-text-secondary); }
.url-builder-hint i { color: var(--primary-orange, #f59e0b); }

/* ───── preview panel ───── */
.url-builder-viewport-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.6rem 0.9rem; background: var(--docs-bg-tertiary); border-bottom: 1px solid var(--docs-border-color); }
.url-builder-viewport-toggles { display: flex; gap: 0.2rem; padding: 0.2rem; background: var(--docs-bg-primary); border: 1px solid var(--docs-border-color); border-radius: var(--radius-md); }
.url-builder-viewport-btn { width: 34px; height: 30px; display: grid; place-items: center; border: none; border-radius: var(--radius-sm); background: transparent; color: var(--docs-text-secondary); cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast); }
.url-builder-viewport-btn.active { background: var(--docs-accent-soft); color: var(--docs-accent-strong); }
[data-theme="dark"] .url-builder-viewport-btn.active { color: #7dd3fc; }
.url-builder-viewport-info { font-size: var(--font-size-xs); color: var(--docs-text-muted); font-family: var(--docs-mono); }

.url-builder-preview-area { flex: 1; overflow: auto; padding: 1.5rem; display: grid; place-items: center; min-height: 0; }
.url-builder-preview-viewport { width: 100%; max-width: 100%; display: grid; place-items: center; }
.url-builder-preview-empty, .url-builder-preview-error { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: var(--docs-text-muted); padding: 2rem; }
.url-builder-preview-empty-icon, .url-builder-preview-error-icon { width: 60px; height: 60px; display: grid; place-items: center; border-radius: var(--radius-full); font-size: 1.5rem; margin-bottom: 1rem; }
.url-builder-preview-empty-icon { color: var(--docs-accent); background: var(--docs-accent-soft); }
.url-builder-preview-error-icon { color: var(--primary-red, #ef4444); background: rgba(239, 68, 68, 0.1); }
.url-builder-preview-empty h4, .url-builder-preview-error h4 { font-size: 1rem; font-weight: 700; color: var(--docs-text-secondary); margin: 0 0 0.4rem; }
.url-builder-preview-empty p, .url-builder-preview-error p { font-size: var(--font-size-sm); margin: 0; max-width: 320px; }
.url-builder-preview-img { max-width: 100%; max-height: 70vh; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); }
.url-builder-preview-retry-btn { margin-top: 1rem; display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 1rem; border: 1px solid var(--docs-border-strong); border-radius: var(--radius-md); background: var(--docs-bg-primary); color: var(--docs-text-secondary); font-size: var(--font-size-sm); font-weight: 600; cursor: pointer; }
.url-builder-preview-loading { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; color: var(--docs-text-muted); font-size: var(--font-size-sm); }
.url-builder-preview-spinner { width: 32px; height: 32px; border-radius: 50%; border: 3px solid var(--docs-border-strong); border-top-color: var(--docs-accent); animation: ubSpin 0.8s linear infinite; }
@keyframes ubSpin { to { transform: rotate(360deg); } }

/* size bar */
.url-builder-size-bar { display: flex; gap: 1.5rem; padding: 0.6rem 1rem; background: var(--docs-bg-tertiary); border-top: 1px solid var(--docs-border-color); }
.url-builder-size-item { display: flex; align-items: center; gap: 0.4rem; font-size: var(--font-size-xs); }
.url-builder-size-label { font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--docs-text-muted); }
.url-builder-size-value { font-family: var(--docs-mono); color: var(--docs-text-primary); }
.url-builder-size-savings { font-family: var(--docs-mono); font-weight: 700; color: var(--primary-green, #10b981); }

@media (prefers-reduced-motion: reduce) {
  .url-builder-preview-spinner { animation: none; }
}

/* ==========================================================================
   Share & State Persistence (E23-S06)
   ========================================================================== */

/* ---------- Share tooltip ---------- */
.url-builder-share-tooltip {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--neutral-900);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    z-index: 50;
    box-shadow: var(--shadow-md);
    animation: url-builder-tooltip-in 0.15s ease-out;
    pointer-events: none;
}

.url-builder-share-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    right: 12px;
    border: 6px solid transparent;
    border-bottom-color: var(--neutral-900);
}

.url-builder-share-tooltip-warning {
    display: block;
    margin-top: var(--space-4);
    font-size: 0.7rem;
    color: #fbbf24;
    font-weight: 400;
}

@keyframes url-builder-tooltip-in {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Shared link notice ---------- */
.url-builder-shared-notice {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8) var(--space-12);
    margin-bottom: var(--space-12);
    font-size: var(--font-size-xs);
    color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.08);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: var(--radius-sm);
}

.url-builder-shared-notice i {
    flex-shrink: 0;
}

/* ---------- Private image notice ---------- */
.url-builder-private-notice {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-24);
    text-align: center;
    color: var(--neutral-500);
}

.url-builder-private-notice i {
    font-size: 2rem;
    color: var(--neutral-300);
}

.url-builder-private-notice p {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* ---------- Dark mode ---------- */
[data-theme="dark"] .url-builder-share-tooltip {
    background: #e4e4e7;
    color: #0f0f23;
}

[data-theme="dark"] .url-builder-share-tooltip::before {
    border-bottom-color: #e4e4e7;
}

[data-theme="dark"] .url-builder-share-tooltip-warning {
    color: #d97706;
}

[data-theme="dark"] .url-builder-shared-notice {
    color: #7dd3fc;
    background: rgba(14, 165, 233, 0.12);
    border-color: rgba(14, 165, 233, 0.25);
}

[data-theme="dark"] .url-builder-private-notice {
    color: #71717a;
}

[data-theme="dark"] .url-builder-private-notice i {
    color: #3a3a4e;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .url-builder-share-tooltip {
        animation: none;
    }
}


/* ==========================================================================
   Image Selector & Operation Stack (E23-S02)
   ========================================================================== */

/* ---------- Screen reader only ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- Image source tabs ---------- */
.url-builder-img-tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--space-12);
    border-bottom: 1px solid var(--neutral-200);
}

.url-builder-img-tab {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-8) var(--space-16);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-500);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.url-builder-img-tab:hover:not(.active) {
    color: var(--neutral-700);
    background: var(--neutral-50);
}

.url-builder-img-tab.active {
    color: var(--docs-accent);
    border-bottom-color: var(--docs-accent);
}

.url-builder-img-tab i {
    font-size: 0.85em;
}

/* ---------- Tab panes ---------- */
.url-builder-img-tab-pane {
    padding-top: var(--space-4);
}

/* ---------- Form field styles ---------- */
.url-builder-field {
    margin-bottom: var(--space-8);
}

.url-builder-field:last-child {
    margin-bottom: 0;
}

.url-builder-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-600);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.url-builder-input-group {
    display: flex;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.url-builder-input-group:focus-within {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.url-builder-input {
    flex: 1;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-sm);
    color: var(--neutral-800);
    background: #fff;
    border: none;
    outline: none;
    min-width: 0;
    font-family: inherit;
}

.url-builder-input::placeholder {
    color: var(--neutral-400);
}

.url-builder-input-addon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    background: var(--neutral-50);
    border: none;
    border-left: 1px solid var(--neutral-200);
    color: var(--neutral-500);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.url-builder-input-addon:hover {
    background: var(--docs-accent);
    color: #fff;
    border-left-color: var(--docs-accent);
}

.url-builder-input-error {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 3px rgba(255, 86, 48, 0.15) !important;
}

/* ---------- URL preview ---------- */
.url-builder-img-url-preview {
    margin-top: var(--space-8);
}

.url-builder-img-url-preview-inner {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8);
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
}

.url-builder-img-url-preview-thumb {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.url-builder-img-url-preview-placeholder {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-100);
    border-radius: var(--radius-sm);
    color: var(--neutral-400);
    flex-shrink: 0;
}

.url-builder-img-url-preview-info {
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
}

/* ---------- Image grid ---------- */
.url-builder-img-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    min-height: 60px;
}

.url-builder-img-grid-item {
    display: flex;
    flex-direction: column;
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: #fff;
}

.url-builder-img-grid-item:hover {
    border-color: var(--neutral-300);
    box-shadow: var(--shadow-sm);
}

.url-builder-img-grid-item.selected {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.url-builder-img-grid-thumb {
    width: 100%;
    height: 80px;
    object-fit: cover;
    display: block;
}

.url-builder-img-grid-placeholder {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-100);
    color: var(--neutral-400);
    font-size: 1.5rem;
}

.url-builder-img-grid-info {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.url-builder-img-grid-name {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--neutral-700);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-builder-img-grid-dims {
    font-size: 0.6rem;
    color: var(--neutral-400);
}

/* ---------- Load more ---------- */
.url-builder-img-load-more {
    display: block;
    width: 100%;
    margin-top: var(--space-8);
    padding: var(--space-8);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--docs-accent);
    background: transparent;
    border: 1px dashed var(--neutral-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.url-builder-img-load-more:hover {
    background: rgba(14, 165, 233, 0.05);
    border-color: var(--docs-accent);
}

/* ---------- Selected image info bar ---------- */
.url-builder-img-selected {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    padding: var(--space-8);
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    margin-top: var(--space-8);
}

.url-builder-img-selected-thumb {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--neutral-100);
    color: var(--neutral-400);
    flex-shrink: 0;
}

.url-builder-img-selected-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.url-builder-img-selected-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.url-builder-img-selected-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--neutral-800);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-builder-img-selected-meta {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
}

.url-builder-img-change-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--neutral-500);
    background: transparent;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
}

.url-builder-img-change-btn:hover {
    color: var(--docs-accent);
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.05);
}

/* ---------- Operation dropdown ---------- */
.url-builder-op-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 30;
    width: 340px;
    max-height: 400px;
    overflow-y: auto;
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    margin-top: var(--space-4);
}

.url-builder-op-dropdown-search {
    position: sticky;
    top: 0;
    z-index: 1;
    display: block;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-sm);
    color: var(--neutral-800);
    background: var(--neutral-50);
    border: none;
    border-bottom: 1px solid var(--neutral-200);
    outline: none;
    font-family: inherit;
    box-sizing: border-box;
}

.url-builder-op-dropdown-search::placeholder {
    color: var(--neutral-400);
}

.url-builder-op-dropdown-search:focus {
    background: #fff;
}

.url-builder-op-dropdown-categories {
    padding: var(--space-4) 0;
}

.url-builder-op-dropdown-category {
    margin-bottom: 0;
}

.url-builder-op-dropdown-category-header {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-600);
    background: transparent;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: background var(--transition-fast);
    text-align: left;
}

.url-builder-op-dropdown-category-header:hover {
    background: var(--neutral-50);
}

.url-builder-op-dropdown-category-header i:first-child {
    width: 16px;
    text-align: center;
    color: var(--neutral-400);
    font-size: 0.8em;
}

.url-builder-op-dropdown-category-name {
    flex: 1;
}

.url-builder-op-dropdown-category-count {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--neutral-400);
    background: var(--neutral-100);
    padding: 1px 6px;
    border-radius: 10px;
}

.url-builder-op-dropdown-chevron {
    font-size: 0.65em;
    color: var(--neutral-400);
    transition: transform var(--transition-fast);
}

.url-builder-op-dropdown-chevron.collapsed {
    transform: rotate(-90deg);
}

.url-builder-op-dropdown-items {
    padding: 0 var(--space-4);
}

.url-builder-op-dropdown-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    padding-left: 36px;
    text-align: left;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.url-builder-op-dropdown-item:hover {
    background: rgba(14, 165, 233, 0.06);
}

.url-builder-op-dropdown-item-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-800);
}

.url-builder-op-dropdown-item-desc {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
    line-height: 1.3;
}

.url-builder-op-dropdown-empty {
    padding: var(--space-16);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
    font-style: italic;
}

/* ---------- Operation card ---------- */
.url-builder-op-card {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8) var(--space-12);
    margin-bottom: var(--space-4);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.url-builder-op-card:last-child {
    margin-bottom: 0;
}

.url-builder-op-card:hover {
    border-color: var(--neutral-300);
    box-shadow: var(--shadow-sm);
}

.url-builder-op-card-drag {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    color: var(--neutral-300);
    cursor: grab;
    flex-shrink: 0;
    border-radius: 2px;
    transition: color var(--transition-fast);
}

.url-builder-op-card-drag:hover {
    color: var(--neutral-500);
}

.url-builder-op-card-drag i {
    font-size: 0.75em;
}

.url-builder-op-card-order {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    background: var(--docs-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

.url-builder-op-card-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.url-builder-op-card-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--neutral-800);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.url-builder-op-card-name i {
    font-size: 0.8em;
    color: var(--neutral-400);
}

.url-builder-op-card-summary {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-builder-op-card-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    color: var(--neutral-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.url-builder-op-card-remove:hover {
    color: var(--danger-text);
    background: rgba(255, 86, 48, 0.08);
}

/* ---------- Drag states ---------- */
.url-builder-op-card.is-dragging {
    opacity: 0.4;
    border-style: dashed;
    border-color: var(--neutral-300);
}

.url-builder-op-card.drag-over-top {
    border-top: 2px solid var(--docs-accent);
}

.url-builder-op-card.drag-over-bottom {
    border-bottom: 2px solid var(--docs-accent);
}

.url-builder-op-card-touch-clone {
    box-shadow: var(--shadow-lg);
    border-color: var(--docs-accent);
}

/* ---------- Empty state ---------- */
.url-builder-op-empty {
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ---------- Stack actions ---------- */
.url-builder-op-stack-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: var(--space-8);
    margin-top: var(--space-4);
    border-top: 1px solid var(--neutral-100);
}

.url-builder-op-clear-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--danger-text);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.url-builder-op-clear-btn:hover {
    background: rgba(255, 86, 48, 0.08);
    border-color: rgba(255, 86, 48, 0.2);
}


/* ==========================================================================
   Image Selector & Operation Stack - Dark Mode (E23-S02)
   ========================================================================== */

/* Tabs */
[data-theme="dark"] .url-builder-img-tabs {
    border-bottom-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-tab {
    color: #71717a;
}

[data-theme="dark"] .url-builder-img-tab:hover:not(.active) {
    color: #a1a1aa;
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-tab.active {
    color: #7dd3fc;
    border-bottom-color: #7dd3fc;
}

/* Form fields */
[data-theme="dark"] .url-builder-label {
    color: #71717a;
}

[data-theme="dark"] .url-builder-input-group {
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-input-group:focus-within {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

[data-theme="dark"] .url-builder-input {
    background: #1a1a2e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-input::placeholder {
    color: #52567a;
}

[data-theme="dark"] .url-builder-input-addon {
    background: #13132b;
    border-left-color: #2a2a3e;
    color: #71717a;
}

[data-theme="dark"] .url-builder-input-addon:hover {
    background: var(--docs-accent);
    color: #fff;
    border-left-color: var(--docs-accent);
}

/* URL preview */
[data-theme="dark"] .url-builder-img-url-preview-inner {
    background: #13132b;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-url-preview-placeholder {
    background: #2a2a3e;
    color: #52567a;
}

[data-theme="dark"] .url-builder-img-url-preview-info {
    color: #71717a;
}

/* Image grid */
[data-theme="dark"] .url-builder-img-grid-item {
    border-color: #2a2a3e;
    background: #1a1a2e;
}

[data-theme="dark"] .url-builder-img-grid-item:hover {
    border-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-img-grid-item.selected {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

[data-theme="dark"] .url-builder-img-grid-placeholder {
    background: #2a2a3e;
    color: #52567a;
}

[data-theme="dark"] .url-builder-img-grid-name {
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-img-grid-dims {
    color: #52567a;
}

/* Load more */
[data-theme="dark"] .url-builder-img-load-more {
    color: #7dd3fc;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-load-more:hover {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--docs-accent);
}

/* Selected image */
[data-theme="dark"] .url-builder-img-selected {
    background: #13132b;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-selected-thumb {
    background: #2a2a3e;
    color: #52567a;
}

[data-theme="dark"] .url-builder-img-selected-name {
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-img-selected-meta {
    color: #52567a;
}

[data-theme="dark"] .url-builder-img-change-btn {
    color: #71717a;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-img-change-btn:hover {
    color: #7dd3fc;
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.1);
}

/* Operation dropdown */
[data-theme="dark"] .url-builder-op-dropdown {
    background: #1a1a2e;
    border-color: #2a2a3e;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .url-builder-op-dropdown-search {
    background: #13132b;
    border-bottom-color: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-op-dropdown-search::placeholder {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-dropdown-search:focus {
    background: #1a1a2e;
}

[data-theme="dark"] .url-builder-op-dropdown-category-header {
    color: #71717a;
}

[data-theme="dark"] .url-builder-op-dropdown-category-header:hover {
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-op-dropdown-category-header i:first-child {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-dropdown-category-count {
    color: #52567a;
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-op-dropdown-chevron {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-dropdown-item:hover {
    background: rgba(14, 165, 233, 0.1);
}

[data-theme="dark"] .url-builder-op-dropdown-item-name {
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-op-dropdown-item-desc {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-dropdown-empty {
    color: #52567a;
}

/* Operation cards */
[data-theme="dark"] .url-builder-op-card {
    background: #1a1a2e;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-op-card:hover {
    border-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-op-card-drag {
    color: #3a3a4e;
}

[data-theme="dark"] .url-builder-op-card-drag:hover {
    color: #71717a;
}

[data-theme="dark"] .url-builder-op-card-order {
    background: var(--docs-accent);
}

[data-theme="dark"] .url-builder-op-card-name {
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-op-card-name i {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-card-summary {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-card-remove {
    color: #3a3a4e;
}

[data-theme="dark"] .url-builder-op-card-remove:hover {
    color: var(--danger-text);
    background: rgba(255, 86, 48, 0.12);
}

/* Drag states dark */
[data-theme="dark"] .url-builder-op-card.is-dragging {
    border-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-op-card.drag-over-top {
    border-top-color: #7dd3fc;
}

[data-theme="dark"] .url-builder-op-card.drag-over-bottom {
    border-bottom-color: #7dd3fc;
}

[data-theme="dark"] .url-builder-op-card-touch-clone {
    border-color: var(--docs-accent);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Stack actions */
[data-theme="dark"] .url-builder-op-stack-actions {
    border-top-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-op-clear-btn:hover {
    background: rgba(255, 86, 48, 0.12);
    border-color: rgba(255, 86, 48, 0.25);
}


/* ==========================================================================
   Image Selector & Operation Stack - Responsive (E23-S02)
   ========================================================================== */

@media (max-width: 767px) {
    .url-builder-img-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .url-builder-op-dropdown {
        width: 280px;
    }

    .url-builder-img-selected {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .url-builder-img-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .url-builder-op-dropdown {
        width: 240px;
        max-height: 300px;
    }

    .url-builder-img-tab {
        font-size: var(--font-size-xs);
        padding: var(--space-4) var(--space-8);
    }
}


/* ==========================================================================
   Image Selector & Operation Stack - Reduced Motion (E23-S02)
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .url-builder-img-tab,
    .url-builder-input-group,
    .url-builder-input-addon,
    .url-builder-img-grid-item,
    .url-builder-img-load-more,
    .url-builder-img-change-btn,
    .url-builder-op-dropdown-category-header,
    .url-builder-op-dropdown-item,
    .url-builder-op-card,
    .url-builder-op-card-drag,
    .url-builder-op-card-remove,
    .url-builder-op-clear-btn,
    .url-builder-op-dropdown-chevron {
        transition: none;
    }
}


/* ==========================================================================
   Image Selector & Operation Stack - Focus / Accessibility (E23-S02)
   ========================================================================== */

.url-builder-img-tab:focus-visible,
.url-builder-input-addon:focus-visible,
.url-builder-img-grid-item:focus-visible,
.url-builder-img-load-more:focus-visible,
.url-builder-img-change-btn:focus-visible,
.url-builder-op-dropdown-search:focus-visible,
.url-builder-op-dropdown-category-header:focus-visible,
.url-builder-op-dropdown-item:focus-visible,
.url-builder-op-card-drag:focus-visible,
.url-builder-op-card-remove:focus-visible,
.url-builder-op-clear-btn:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}


/* ==========================================================================
   Parameter Controls & Live Preview (E23-S03)
   ========================================================================== */

/* ---------- Expanded Operation Card ---------- */
.url-builder-op-card.is-expanded {
    flex-wrap: wrap;
    box-shadow: var(--shadow-md);
    border-color: var(--neutral-300);
    z-index: 1;
    position: relative;
}

.url-builder-op-card-expand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    color: var(--neutral-400);
    font-size: 0.65em;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: auto;
}

.url-builder-op-card.is-expanded .url-builder-op-card-expand-icon {
    transform: rotate(180deg);
}

/* ---------- Parameter Panel Container ---------- */
.url-builder-op-params {
    width: 100%;
    padding: var(--space-12);
    border-top: 1px solid var(--neutral-200);
    background: var(--neutral-50);
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
    margin-top: var(--space-8);
}

.url-builder-op-params-empty {
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
    font-style: italic;
    text-align: center;
    padding: var(--space-8) 0;
    margin: 0;
}

.url-builder-op-params-reset {
    display: inline-block;
    align-self: flex-end;
    padding: var(--space-4) 0;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--neutral-500);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

.url-builder-op-params-reset:hover {
    color: var(--docs-accent);
}

/* ---------- Slider Component ---------- */
.url-builder-param-slider {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.url-builder-param-slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.url-builder-param-slider-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-600);
    display: block;
    margin-bottom: var(--space-4);
}

.url-builder-param-slider-header .url-builder-param-slider-label {
    margin-bottom: 0;
}

.url-builder-param-slider-value {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--docs-accent);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.url-builder-param-slider-row {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.url-builder-param-slider-range {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    flex: 1;
    height: 4px;
    background: var(--neutral-200);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.url-builder-param-slider-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--docs-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: box-shadow var(--transition-fast);
}

.url-builder-param-slider-range::-webkit-slider-thumb:hover {
    box-shadow: 0 1px 6px rgba(14, 165, 233, 0.4);
}

.url-builder-param-slider-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--docs-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.url-builder-param-slider-range::-moz-range-track {
    height: 4px;
    background: var(--neutral-200);
    border-radius: 2px;
    border: none;
}

.url-builder-param-slider-input {
    width: 72px;
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    color: var(--neutral-800);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    text-align: right;
    outline: none;
    transition: border-color var(--transition-fast);
    flex-shrink: 0;
}

.url-builder-param-slider-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.url-builder-param-slider-unit {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
    flex-shrink: 0;
    min-width: 18px;
}

/* ---------- Color Picker ---------- */
.url-builder-param-color {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.url-builder-param-color-row {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.url-builder-param-color-swatch {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 32px;
    height: 32px;
    border: 2px solid var(--neutral-200);
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
    background: none;
    flex-shrink: 0;
    overflow: hidden;
}

.url-builder-param-color-swatch::-webkit-color-swatch-wrapper {
    padding: 0;
}

.url-builder-param-color-swatch::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

.url-builder-param-color-swatch::-moz-color-swatch {
    border: none;
    border-radius: 50%;
}

.url-builder-param-color-swatch:hover {
    border-color: var(--docs-accent);
}

.url-builder-param-color-hex {
    width: 90px;
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    color: var(--neutral-800);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast);
}

.url-builder-param-color-hex:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

/* ---------- Dropdown ---------- */
.url-builder-param-dropdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.url-builder-param-select {
    display: block;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--neutral-800);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2371717a' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    margin-top: var(--space-4);
}

.url-builder-param-select:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.url-builder-param-select:hover {
    border-color: var(--neutral-300);
}

/* ---------- Text Input ---------- */
.url-builder-param-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.url-builder-param-text-input {
    display: block;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--neutral-800);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast);
    box-sizing: border-box;
}

.url-builder-param-text-input::placeholder {
    color: var(--neutral-400);
}

.url-builder-param-text-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

/* ---------- Size Bar Savings Colors ---------- */
.url-builder-size-savings-green {
    color: var(--success-text) !important;
}

.url-builder-size-savings-yellow {
    color: #d97706 !important;
}

.url-builder-size-savings-neutral {
    color: var(--neutral-500) !important;
}

.url-builder-size-dimensions {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
    margin-left: var(--space-4);
}


/* ==========================================================================
   Parameter Controls & Live Preview - Dark Mode (E23-S03)
   ========================================================================== */

/* Expanded card */
[data-theme="dark"] .url-builder-op-card.is-expanded {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    border-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-op-card-expand-icon {
    color: #52567a;
}

/* Parameter panel */
[data-theme="dark"] .url-builder-op-params {
    background: #13132b;
    border-top-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-op-params-empty {
    color: #52567a;
}

[data-theme="dark"] .url-builder-op-params-reset {
    color: #71717a;
}

[data-theme="dark"] .url-builder-op-params-reset:hover {
    color: #7dd3fc;
}

/* Slider */
[data-theme="dark"] .url-builder-param-slider-label {
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-param-slider-value {
    color: #7dd3fc;
}

[data-theme="dark"] .url-builder-param-slider-range {
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-param-slider-range::-webkit-slider-thumb {
    background: #7dd3fc;
    border-color: #1a1a2e;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .url-builder-param-slider-range::-moz-range-thumb {
    background: #7dd3fc;
    border-color: #1a1a2e;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .url-builder-param-slider-range::-moz-range-track {
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-param-slider-input {
    background: #1a1a2e;
    border-color: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-param-slider-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

[data-theme="dark"] .url-builder-param-slider-unit {
    color: #52567a;
}

/* Color picker */
[data-theme="dark"] .url-builder-param-color-swatch {
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-param-color-swatch:hover {
    border-color: var(--docs-accent);
}

[data-theme="dark"] .url-builder-param-color-hex {
    background: #1a1a2e;
    border-color: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-param-color-hex:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

/* Dropdown */
[data-theme="dark"] .url-builder-param-select {
    background-color: #1a1a2e;
    border-color: #2a2a3e;
    color: #e4e4e7;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2371717a' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
}

[data-theme="dark"] .url-builder-param-select:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

[data-theme="dark"] .url-builder-param-select:hover {
    border-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-param-select option {
    background: #1a1a2e;
    color: #e4e4e7;
}

/* Text input */
[data-theme="dark"] .url-builder-param-text-input {
    background: #1a1a2e;
    border-color: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-param-text-input::placeholder {
    color: #52567a;
}

[data-theme="dark"] .url-builder-param-text-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

/* Size savings */
[data-theme="dark"] .url-builder-size-savings-yellow {
    color: #fbbf24 !important;
}

[data-theme="dark"] .url-builder-size-savings-neutral {
    color: #71717a !important;
}

[data-theme="dark"] .url-builder-size-dimensions {
    color: #52567a;
}


/* ==========================================================================
   Parameter Controls & Live Preview - Responsive (E23-S03)
   ========================================================================== */

@media (max-width: 480px) {
    .url-builder-param-slider-row {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-4);
    }

    .url-builder-param-slider-input {
        width: 100%;
        text-align: left;
    }

    .url-builder-param-slider-unit {
        display: none;
    }

    .url-builder-param-color-row {
        flex-wrap: wrap;
    }

    .url-builder-param-color-hex {
        flex: 1;
    }
}


/* ==========================================================================
   Parameter Controls & Live Preview - Reduced Motion (E23-S03)
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .url-builder-param-slider-range,
    .url-builder-param-slider-input,
    .url-builder-param-color-swatch,
    .url-builder-param-color-hex,
    .url-builder-param-select,
    .url-builder-param-text-input,
    .url-builder-op-params-reset,
    .url-builder-op-card-expand-icon {
        transition: none;
    }

    .url-builder-param-slider-range::-webkit-slider-thumb {
        transition: none;
    }
}


/* ==========================================================================
   Parameter Controls & Live Preview - Focus / Accessibility (E23-S03)
   ========================================================================== */

.url-builder-param-slider-range:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-param-slider-input:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-param-color-swatch:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-param-color-hex:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-param-select:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-param-text-input:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-op-params-reset:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}


/* ==========================================================================
   URL Generation & Format Selection (E23-S04)
   ========================================================================== */

/* ---------- URL Display ---------- */
.url-builder-url-generated {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.url-builder-url-block {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.url-builder-url-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-8) var(--space-12);
    background: var(--neutral-50);
    border-bottom: 1px solid var(--neutral-200);
}

.url-builder-url-block-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-500);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.url-builder-url-block-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.url-builder-url-code {
    display: block;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-xs);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    line-height: 1.6;
    word-break: break-all;
    background: var(--neutral-50);
}

.url-builder-url-base {
    color: var(--neutral-500);
}

.url-builder-url-ops {
    color: var(--docs-accent);
}

.url-builder-url-file {
    color: #0d9488;
}

/* Copy button */
.url-builder-url-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--neutral-600);
    background: transparent;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.url-builder-url-copy-btn:hover {
    color: var(--docs-accent);
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.05);
}

.url-builder-url-copy-btn.is-copied {
    color: #059669;
    border-color: #059669;
    background: rgba(5, 150, 105, 0.05);
}

/* Test URL button */
.url-builder-url-test-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--neutral-600);
    background: transparent;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.url-builder-url-test-btn:hover {
    color: var(--docs-accent);
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.05);
}

.url-builder-url-test-btn.is-disabled {
    color: var(--neutral-300);
    border-color: var(--neutral-200);
    background: transparent;
    cursor: not-allowed;
    pointer-events: none;
}

/* ---------- Quality Slider ---------- */
.url-builder-quality-slider {
    margin-top: var(--space-12);
}

.url-builder-quality-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.url-builder-quality-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--neutral-600);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
}

.url-builder-quality-value {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--docs-accent);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.url-builder-quality-row {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.url-builder-quality-range {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    flex: 1;
    height: 4px;
    background: var(--neutral-200);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.url-builder-quality-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--docs-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: box-shadow var(--transition-fast);
}

.url-builder-quality-range::-webkit-slider-thumb:hover {
    box-shadow: 0 1px 6px rgba(14, 165, 233, 0.4);
}

.url-builder-quality-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--docs-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.url-builder-quality-range::-moz-range-track {
    height: 4px;
    background: var(--neutral-200);
    border-radius: 2px;
    border: none;
}

.url-builder-quality-input {
    width: 60px;
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-xs);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    color: var(--neutral-800);
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    text-align: right;
    outline: none;
    transition: border-color var(--transition-fast);
    flex-shrink: 0;
}

.url-builder-quality-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.url-builder-quality-note {
    margin: var(--space-4) 0 0;
    font-size: 0.7rem;
    color: var(--neutral-400);
    line-height: 1.4;
}

/* ---------- Output Info ---------- */
.url-builder-output-info {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    margin-top: var(--space-12);
    padding: var(--space-8) 0;
}

.url-builder-output-info-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
}

.url-builder-output-info-item i {
    font-size: 0.75rem;
    color: var(--neutral-400);
}

/* ---------- Copied Tooltip ---------- */
.url-builder-url-copied-tooltip {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--neutral-900);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    z-index: 50;
    box-shadow: var(--shadow-md);
    animation: url-builder-tooltip-in 0.15s ease-out;
    pointer-events: none;
}

.url-builder-url-copied-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-bottom-color: var(--neutral-900);
}


/* ==========================================================================
   URL Generation & Format Selection - Dark Mode (E23-S04)
   ========================================================================== */

[data-theme="dark"] .url-builder-url-block {
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-url-block-header {
    background: #13132b;
    border-bottom-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-url-block-label {
    color: #52567a;
}

[data-theme="dark"] .url-builder-url-code {
    background: #0f0f23;
}

[data-theme="dark"] .url-builder-url-base {
    color: #71717a;
}

[data-theme="dark"] .url-builder-url-ops {
    color: #7dd3fc;
}

[data-theme="dark"] .url-builder-url-file {
    color: #34d399;
}

[data-theme="dark"] .url-builder-url-copy-btn {
    color: #71717a;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-url-copy-btn:hover {
    color: #7dd3fc;
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.1);
}

[data-theme="dark"] .url-builder-url-copy-btn.is-copied {
    color: #34d399;
    border-color: #059669;
    background: rgba(5, 150, 105, 0.1);
}

[data-theme="dark"] .url-builder-url-test-btn {
    color: #71717a;
    border-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-url-test-btn:hover {
    color: #7dd3fc;
    border-color: var(--docs-accent);
    background: rgba(14, 165, 233, 0.1);
}

[data-theme="dark"] .url-builder-url-test-btn.is-disabled {
    color: #3a3a4e;
    border-color: #2a2a3e;
    background: transparent;
}

/* Quality slider dark mode */
[data-theme="dark"] .url-builder-quality-label {
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-quality-value {
    color: #7dd3fc;
}

[data-theme="dark"] .url-builder-quality-range {
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-quality-range::-webkit-slider-thumb {
    background: var(--docs-accent);
    border-color: #1a1a2e;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .url-builder-quality-range::-moz-range-thumb {
    background: var(--docs-accent);
    border-color: #1a1a2e;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .url-builder-quality-range::-moz-range-track {
    background: #2a2a3e;
}

[data-theme="dark"] .url-builder-quality-input {
    background: #0f0f23;
    border-color: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-quality-input:focus {
    border-color: var(--docs-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

[data-theme="dark"] .url-builder-quality-note {
    color: #52567a;
}

/* Output info dark mode */
[data-theme="dark"] .url-builder-output-info-item {
    color: #71717a;
}

[data-theme="dark"] .url-builder-output-info-item i {
    color: #52567a;
}

/* Copied tooltip dark mode */
[data-theme="dark"] .url-builder-url-copied-tooltip {
    background: #e4e4e7;
    color: #0f0f23;
}

[data-theme="dark"] .url-builder-url-copied-tooltip::before {
    border-bottom-color: #e4e4e7;
}


/* ==========================================================================
   URL Generation & Format Selection - Responsive (E23-S04)
   ========================================================================== */

@media (max-width: 480px) {
    .url-builder-url-code {
        font-size: 0.65rem;
    }

    .url-builder-url-block-header {
        flex-wrap: wrap;
        gap: var(--space-4);
    }

    .url-builder-url-block-actions {
        width: 100%;
    }

    .url-builder-quality-row {
        flex-wrap: wrap;
    }

    .url-builder-quality-range {
        flex: 1 1 100%;
    }

    .url-builder-quality-input {
        width: 52px;
    }

    .url-builder-output-info {
        flex-wrap: wrap;
        gap: var(--space-8);
    }
}


/* ==========================================================================
   URL Generation & Format Selection - Reduced Motion (E23-S04)
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .url-builder-url-copy-btn,
    .url-builder-url-test-btn,
    .url-builder-quality-range,
    .url-builder-quality-input,
    .url-builder-quality-range::-webkit-slider-thumb {
        transition: none;
    }

    .url-builder-url-copied-tooltip {
        animation: none;
    }
}


/* ==========================================================================
   URL Generation & Format Selection - Focus / Accessibility (E23-S04)
   ========================================================================== */

.url-builder-url-copy-btn:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-url-test-btn:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-quality-range:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-quality-input:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}


/* ==========================================================================
   Embed Code & Performance Hints (E23-S05)
   ========================================================================== */

/* ---------- Collapsible Sections ---------- */

.url-builder-section-header-toggle {
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast);
}

.url-builder-section-header-toggle:hover {
    background: var(--neutral-50);
}

.url-builder-section-chevron {
    font-size: 0.7em;
    color: var(--neutral-400);
    transition: transform var(--transition-fast);
    margin-left: auto;
}

.url-builder-section-header-toggle.is-expanded .url-builder-section-chevron {
    transform: rotate(180deg);
}

/* ---------- Embed Code: Alt Text ---------- */

.url-builder-embed-alt {
    margin-bottom: var(--space-12);
}

.url-builder-embed-alt .url-builder-input {
    width: 100%;
}

/* ---------- Embed Code: Tabs ---------- */

.url-builder-embed-tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--space-12);
    border-bottom: 2px solid var(--neutral-200);
}

.url-builder-embed-tab {
    flex: 1;
    padding: var(--space-8) var(--space-12);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    color: var(--neutral-500);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    text-align: center;
    white-space: nowrap;
}

.url-builder-embed-tab:hover {
    color: var(--neutral-700);
}

.url-builder-embed-tab.active {
    color: var(--docs-accent);
    border-bottom-color: var(--docs-accent);
}

/* ---------- Embed Code: Output ---------- */

.url-builder-embed-output {
    /* container for code + copy */
}

.url-builder-embed-code-wrap {
    position: relative;
}

.url-builder-embed-code {
    background: #0f172a;
    color: #e2e8f0;
    padding: var(--space-16);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: var(--font-size-xs);
    line-height: 1.6;
    margin: 0;
    white-space: pre;
    tab-size: 2;
}

.url-builder-embed-code code {
    background: none;
    padding: 0;
    font-size: inherit;
    color: inherit;
    font-family: inherit;
}

.url-builder-embed-code-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--space-8);
}

.url-builder-embed-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-12);
    background: var(--neutral-100);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    color: var(--neutral-600);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.url-builder-embed-copy-btn:hover {
    background: var(--neutral-200);
    color: var(--neutral-800);
}

.url-builder-embed-copy-btn.is-copied {
    background: #dcfce7;
    color: #16a34a;
    border-color: #86efac;
}

.url-builder-embed-note {
    margin: var(--space-8) 0 0;
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
    line-height: 1.5;
}

.url-builder-embed-note i {
    margin-right: var(--space-4);
    color: var(--neutral-400);
}

.url-builder-embed-note code {
    background: var(--neutral-100);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.9em;
}

/* ---------- Embed Code: Syntax Highlighting ---------- */

.url-builder-embed-tag {
    color: #60a5fa;
}

.url-builder-embed-attr {
    color: #7dd3fc;
}

.url-builder-embed-val {
    color: #34d399;
}

.url-builder-embed-punct {
    color: #6b7280;
}

/* ---------- Performance Hints: Badge ---------- */

.url-builder-hints-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--space-4);
    border-radius: 10px;
    background: var(--docs-accent);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    line-height: 1;
    margin-left: var(--space-8);
}

/* ---------- Performance Hints: List ---------- */

.url-builder-hints-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* ---------- Performance Hints: Individual Hint ---------- */

.url-builder-hint {
    display: flex;
    align-items: flex-start;
    gap: var(--space-12);
    padding: var(--space-12);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--neutral-300);
    background: var(--neutral-50);
}

.url-builder-hint-icon {
    flex-shrink: 0;
    width: 24px;
    text-align: center;
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.url-builder-hint-content {
    flex: 1;
    min-width: 0;
}

.url-builder-hint-text {
    font-size: var(--font-size-xs);
    color: var(--neutral-700);
    line-height: 1.5;
}

.url-builder-hint-text code {
    background: var(--neutral-100);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.9em;
}

/* Severity: info (blue) */
.url-builder-hint-info {
    border-left-color: #3b82f6;
    background: rgba(59, 130, 246, 0.05);
}

.url-builder-hint-info .url-builder-hint-icon {
    color: #3b82f6;
}

/* Severity: success (green) */
.url-builder-hint-success {
    border-left-color: #22c55e;
    background: rgba(34, 197, 94, 0.05);
}

.url-builder-hint-success .url-builder-hint-icon {
    color: #22c55e;
}

/* Severity: warning (orange/amber) */
.url-builder-hint-warning {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.url-builder-hint-warning .url-builder-hint-icon {
    color: #f59e0b;
}

/* ---------- Performance Hints: Action Link ---------- */

.url-builder-hint-action {
    display: inline;
    margin-top: var(--space-4);
    font-size: var(--font-size-xs);
    color: var(--docs-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.url-builder-hint-action:hover {
    color: #5f4fd6;
}

/* ---------- Performance Hints: Load Time ---------- */

.url-builder-hint-loadtime {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-8);
    margin-top: var(--space-4);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: var(--font-size-xs);
    color: var(--neutral-600);
}

.url-builder-hint-loadtime span {
    white-space: nowrap;
}

.url-builder-hint-loadtime small {
    color: var(--neutral-400);
    font-weight: 400;
}

.url-builder-hint-loadtime-sep {
    color: var(--neutral-300);
    user-select: none;
}

.url-builder-hint-loadtime-slow {
    color: #ea580c;
    font-weight: 600;
}


/* ==========================================================================
   Embed Code & Performance Hints - Dark Mode (E23-S05)
   ========================================================================== */

[data-theme="dark"] .url-builder-section-header-toggle:hover {
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .url-builder-section-chevron {
    color: #52567a;
}

/* Embed tabs dark */
[data-theme="dark"] .url-builder-embed-tabs {
    border-bottom-color: #2a2a3e;
}

[data-theme="dark"] .url-builder-embed-tab {
    color: #71717a;
}

[data-theme="dark"] .url-builder-embed-tab:hover {
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-embed-tab.active {
    color: #7dd3fc;
    border-bottom-color: #7dd3fc;
}

/* Embed code block dark */
[data-theme="dark"] .url-builder-embed-code {
    background: #0f0f23;
    color: #d1d5db;
}

/* Syntax colors adjusted for dark bg */
[data-theme="dark"] .url-builder-embed-tag {
    color: #60a5fa;
}

[data-theme="dark"] .url-builder-embed-attr {
    color: #c4b5fd;
}

[data-theme="dark"] .url-builder-embed-val {
    color: #6ee7b7;
}

[data-theme="dark"] .url-builder-embed-punct {
    color: #4b5563;
}

/* Embed copy button dark */
[data-theme="dark"] .url-builder-embed-copy-btn {
    background: #1a1a2e;
    border-color: #2a2a3e;
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-embed-copy-btn:hover {
    background: #2a2a3e;
    color: #e4e4e7;
}

[data-theme="dark"] .url-builder-embed-copy-btn.is-copied {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.3);
}

/* Embed note dark */
[data-theme="dark"] .url-builder-embed-note {
    color: #71717a;
}

[data-theme="dark"] .url-builder-embed-note i {
    color: #52567a;
}

[data-theme="dark"] .url-builder-embed-note code {
    background: #1a1a2e;
}

/* Hints badge dark */
[data-theme="dark"] .url-builder-hints-badge {
    background: var(--docs-accent);
}

/* Hints cards dark */
[data-theme="dark"] .url-builder-hint {
    background: rgba(255, 255, 255, 0.02);
    border-left-color: #3a3a4e;
}

[data-theme="dark"] .url-builder-hint-text {
    color: #a1a1aa;
}

[data-theme="dark"] .url-builder-hint-text code {
    background: #1a1a2e;
}

[data-theme="dark"] .url-builder-hint-info {
    border-left-color: #3b82f6;
    background: rgba(59, 130, 246, 0.08);
}

[data-theme="dark"] .url-builder-hint-success {
    border-left-color: #22c55e;
    background: rgba(34, 197, 94, 0.08);
}

[data-theme="dark"] .url-builder-hint-warning {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.08);
}

[data-theme="dark"] .url-builder-hint-action {
    color: #7dd3fc;
}

[data-theme="dark"] .url-builder-hint-action:hover {
    color: #c4b5fd;
}

[data-theme="dark"] .url-builder-hint-loadtime {
    color: #71717a;
}

[data-theme="dark"] .url-builder-hint-loadtime small {
    color: #52567a;
}

[data-theme="dark"] .url-builder-hint-loadtime-sep {
    color: #2a2a3e;
}

[data-theme="dark"] .url-builder-hint-loadtime-slow {
    color: #fb923c;
}


/* ==========================================================================
   Embed Code & Performance Hints - Focus / Accessibility (E23-S05)
   ========================================================================== */

.url-builder-embed-tab:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: -2px;
}

.url-builder-embed-copy-btn:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
}

.url-builder-section-header-toggle:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: -2px;
}

.url-builder-hint-action:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

.url-builder-embed-alt .url-builder-input:focus-visible {
    outline: 2px solid var(--docs-accent);
    outline-offset: -1px;
}


/* ==========================================================================
   Embed Code & Performance Hints - Reduced Motion (E23-S05)
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .url-builder-section-chevron,
    .url-builder-section-header-toggle,
    .url-builder-embed-tab,
    .url-builder-embed-copy-btn,
    .url-builder-hint-action {
        transition: none;
    }
}


/* ==========================================================================
   Embed Code & Performance Hints - Responsive (E23-S05)
   ========================================================================== */

@media (max-width: 480px) {
    .url-builder-embed-tabs {
        flex-wrap: wrap;
    }

    .url-builder-embed-tab {
        flex: 1 1 auto;
        min-width: 0;
    }

    .url-builder-embed-code {
        font-size: 0.65rem;
        padding: var(--space-12);
    }

    .url-builder-hint {
        padding: var(--space-8);
        gap: var(--space-8);
    }

    .url-builder-hint-loadtime {
        flex-direction: column;
        gap: var(--space-4);
    }

    .url-builder-hint-loadtime-sep {
        display: none;
    }
}