/* ═══════════════════════════════════════════════
   Rakubox — Dark Studio Workspace
   ═══════════════════════════════════════════════ */

:root {
  --bg-deep: #0b0b0e;
  --bg-surface: #131316;
  --bg-elevated: #1a1a1f;
  --bg-hover: #222228;
  --bg-active: #2a2a32;

  --border: #27272e;
  --border-subtle: #1e1e24;
  --border-focus: #3a3a44;

  --text-primary: #eae8e4;
  --text-secondary: #8a8694;
  --text-muted: #55525e;

  --accent: #d4962a;
  --accent-light: #e8ad42;
  --accent-subtle: rgba(212, 150, 42, 0.1);
  --accent-glow: rgba(212, 150, 42, 0.25);

  --success: #3ecf74;
  --success-subtle: rgba(62, 207, 116, 0.1);
  --danger: #ef5350;
  --danger-subtle: rgba(239, 83, 80, 0.08);

  --slot-empty: rgba(255, 0, 255, 0.3);
  --slot-empty-bg: rgba(255, 0, 255, 0.03);
  --slot-selected: #d4962a;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.12s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  --rail-width: 48px;
}

/* ─── Material Icons sizing ─── */
.material-icons-outlined {
  font-size: 20px;
  line-height: 1;
  vertical-align: middle;
}

.btn-icon {
  font-size: 16px !important;
}

.settings-nav-icon {
  font-size: 18px !important;
}

/* ─── Reset ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Grain Overlay ─── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ─── Layout ─── */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════
   Icon Rail
   ═══════════════════════════════════════════════ */
#icon-rail {
  width: var(--rail-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0;
  gap: 2px;
  flex-shrink: 0;
}

.rail-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  color: var(--text-muted);
}

.rail-btn::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 20px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  transition: transform var(--transition-base);
}

.rail-btn:hover {
  background: var(--bg-hover);
  color: var(--text-secondary);
}

.rail-btn.active {
  color: var(--accent);
  background: var(--accent-subtle);
}

.rail-btn.active::before {
  transform: translateY(-50%) scaleY(1);
}

.rail-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.rail-icon .material-icons-outlined {
  font-size: 20px;
}

/* Tooltip on hover */
.rail-btn::after {
  content: attr(title);
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%) scale(0.9);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 100;
}

.rail-btn:hover::after {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

/* ═══════════════════════════════════════════════
   Header
   ═══════════════════════════════════════════════ */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 48px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

header h1 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand-accent {
  color: var(--accent);
}

.header-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}

.header-actions-group {
  display: none;
  align-items: center;
  gap: 4px;
}

.header-actions-group.active {
  display: flex;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}

.btn svg { flex-shrink: 0; }

.btn--ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.btn--ghost:active {
  background: var(--bg-active);
  transform: scale(0.97);
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-deep);
  border-color: var(--accent);
  font-weight: 550;
}

.btn--primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
}

.btn--primary:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   Tool Pages
   ═══════════════════════════════════════════════ */
main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.tool-page {
  display: none;
  flex: 1;
  overflow: hidden;
}

.tool-page.active {
  display: flex;
}

/* ═══════════════════════════════════════════════
   Banner Tool — Sidebar
   ═══════════════════════════════════════════════ */
#banner-panel {
  width: 264px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

.panel-section {
  padding: 12px;
}

.panel-section--grow {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  background: var(--bg-hover);
  color: var(--text-secondary);
  padding: 1px 5px;
  border-radius: 8px;
  letter-spacing: 0;
  text-transform: none;
}

/* ─── Drop Zone ─── */
#drop-zone,
.thumb-drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 18px 12px;
  border: 1.5px dashed var(--border-focus);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

#drop-zone::before,
.thumb-drop-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-subtle), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

#drop-zone:hover,
.thumb-drop-zone:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

#drop-zone:hover::before,
.thumb-drop-zone:hover::before {
  opacity: 1;
}

#drop-zone.dragover,
.thumb-drop-zone.dragover {
  border-color: var(--accent);
  background: var(--bg-hover);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

#drop-zone.dragover::before,
.thumb-drop-zone.dragover::before {
  opacity: 1;
}

.drop-icon {
  color: var(--text-muted);
  transition: color var(--transition-base), transform var(--transition-base);
}

#drop-zone:hover .drop-icon,
.thumb-drop-zone:hover .drop-icon {
  color: var(--accent);
  transform: translateY(-1px);
}

#drop-zone p,
.thumb-drop-zone p {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.drop-sub {
  font-size: 10px;
  color: var(--text-muted);
  position: relative;
}

#file-input { display: none; }

/* ─── Type List ─── */
#type-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 0 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

#type-list::-webkit-scrollbar { width: 4px; }
#type-list::-webkit-scrollbar-track { background: transparent; }
#type-list::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

.empty-msg {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  padding: 24px 0;
}

/* ─── Type Items ─── */
.type-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  grid-template-rows: auto auto;
  gap: 1px 8px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  margin-bottom: 2px;
  transition: all var(--transition-fast);
  position: relative;
  cursor: pointer;
  border: 1px solid transparent;
  align-items: center;
}

.type-item:hover {
  background: var(--bg-elevated);
  border-color: var(--border);
}

.type-thumb-wrap {
  grid-row: 1;
  grid-column: 1;
  width: 48px;
  height: 34px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-thumb {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.type-thumb-empty {
  color: var(--text-muted);
  opacity: 0.4;
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-info {
  grid-row: 1;
  grid-column: 2;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.type-name {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.type-size {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.type-status {
  font-size: 9.5px;
  color: var(--text-muted);
}

.type-item.has-banner .type-status {
  color: var(--success);
}

.type-file-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.type-remove {
  grid-row: 1;
  grid-column: 3;
  width: 20px;
  height: 20px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-item:hover .type-remove {
  opacity: 1;
}

.type-remove:hover {
  background: var(--danger-subtle);
  color: var(--danger);
}

/* ═══════════════════════════════════════════════
   Banner Tool — Mockup Area
   ═══════════════════════════════════════════════ */
#mockup-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-deep);
}

#mockup-tabs {
  display: flex;
  gap: 2px;
  padding: 6px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-muted);
}

.tab-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.tab-btn.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 550;
  border-color: var(--border);
}

#mockup-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(212, 150, 42, 0.03), transparent 60%),
    var(--bg-deep);
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

#mockup-viewport::-webkit-scrollbar { width: 6px; height: 6px; }
#mockup-viewport::-webkit-scrollbar-track { background: transparent; }
#mockup-viewport::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

#mockup-container {
  position: relative;
  background: #fff;
  border-radius: 3px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.25),
    0 12px 40px rgba(0, 0, 0, 0.15);
  transition: box-shadow var(--transition-slow);
}

.mockup-image {
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  border-radius: 3px;
}

/* ─── Slot Overlays ─── */
.slot-overlay {
  position: absolute;
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
}

.slot-overlay.empty {
  outline: 1.5px dashed var(--slot-empty);
  outline-offset: -1.5px;
  background: var(--slot-empty-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-overlay.empty:hover {
  outline-color: #fff;
  outline-style: solid;
  background: rgba(255, 255, 255, 0.08);
}

.slot-overlay.filled {
  outline: none;
}

.slot-overlay.filled:hover {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  box-shadow: 0 0 0 3px var(--accent-glow);
  z-index: 10;
}

.slot-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: rgba(255, 0, 255, 0.5);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: 0.02em;
}

.slot-overlay.empty:hover .slot-label {
  color: #fff;
}

.slot-banner-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ─── Type Background Color ─── */
.type-bg-color {
  grid-row: 2;
  grid-column: 2 / -1;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 0;
}

.type-bg-label {
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.type-bg-color-picker {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border-focus);
  border-radius: 3px;
  padding: 0;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}

.type-bg-color-picker::-webkit-color-swatch-wrapper { padding: 1px; }
.type-bg-color-picker::-webkit-color-swatch { border: none; border-radius: 2px; }

.type-bg-hex-input {
  width: 62px;
  height: 18px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 0 4px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.type-bg-hex-input::placeholder { color: var(--text-muted); }
.type-bg-hex-input:focus { border-color: var(--accent); color: var(--text-primary); }

/* ─── Footer ─── */
#mockup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 14px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

#slot-info {
  font-size: 10.5px;
  color: var(--text-muted);
  font-weight: 450;
}

#scale-info {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

#scale-info svg { opacity: 0.5; }

/* ═══════════════════════════════════════════════
   Empty / Error States
   ═══════════════════════════════════════════════ */
.mockup-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  min-width: 400px;
  color: var(--text-muted);
  gap: 12px;
  padding: 40px;
}

.mockup-empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.mockup-empty p {
  font-size: 12px;
  text-align: center;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════
   Thumbnail Tool — Sidebar
   ═══════════════════════════════════════════════ */
#thumb-panel {
  width: 264px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

.thumb-preview-wrap {
  position: relative;
  padding-bottom: 56.25%;
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 100%;
}

.thumb-preview-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ─── Toggle Groups ─── */
.thumb-controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.thumb-toggle-group {
  display: flex;
  gap: 2px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 2px;
}

.thumb-toggle {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 5px 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.thumb-toggle:hover {
  color: var(--text-secondary);
}

.thumb-toggle.active {
  background: var(--bg-active);
  color: var(--text-primary);
  font-weight: 550;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.thumb-toggle svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.thumb-toggle.active svg {
  opacity: 1;
}

/* ─── Channel Info ─── */
.thumb-channel-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
}

.thumb-channel-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
}

.thumb-channel-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thumb-channel-subs {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 1px;
}

/* ─── Status ─── */
.thumb-status {
  font-size: 11px;
}

.thumb-status-loading {
  color: var(--text-muted);
}

.thumb-status-error {
  color: var(--danger);
}

.thumb-status-ok {
  color: var(--success);
}

/* ─── Tips ─── */
.thumb-tips {
  padding: 10px;
  border-radius: var(--radius-md);
  background: rgba(212, 150, 42, 0.06);
  border: 1px solid rgba(212, 150, 42, 0.12);
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.thumb-tips strong {
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.thumb-tips ul {
  padding-left: 14px;
  margin: 0;
}

.thumb-tips li {
  margin-bottom: 2px;
}

/* ═══════════════════════════════════════════════
   Thumbnail Tool — Preview Area
   ═══════════════════════════════════════════════ */
#thumb-preview {
  flex: 1;
  overflow: hidden;
  background: var(--bg-deep);
}

/* Loading state */
.thumb-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  color: var(--text-muted);
  font-size: 13px;
}

@keyframes thumbSpin {
  to { transform: rotate(360deg); }
}

.thumb-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: thumbSpin 0.8s linear infinite;
}

/* ─── YouTube Card Hover Effects ─── */
.yt-card:hover .yt-card-thumb {
  transform: scale(1.03) !important;
}

.yt-card:hover .yt-card-more {
  opacity: 1 !important;
}

/* ═══════════════════════════════════════════════
   Settings Page
   ═══════════════════════════════════════════════ */
#page-settings.active {
  display: flex;
}

/* Sidebar nav */
.settings-nav {
  width: 200px;
  flex-shrink: 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: none;
  background: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 12px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.settings-nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.settings-nav-item.active {
  background: var(--bg-active);
  color: var(--text-primary);
}

/* Content area */
.settings-content {
  flex: 1;
  padding: 28px 32px;
  overflow-y: auto;
  max-width: 560px;
}

.settings-section-header {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 24px;
}

.settings-group {
  margin-bottom: 24px;
}

.settings-group:last-child {
  margin-bottom: 0;
}

.settings-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.settings-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 12px;
}

.settings-status {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 14px;
}

.settings-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.settings-status-row + .settings-status-row {
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  padding-top: 8px;
}

.settings-status-key {
  font-size: 12px;
  color: var(--text-secondary);
}

.settings-status-val {
  font-size: 12px;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.settings-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-mono);
  margin-bottom: 10px;
  box-sizing: border-box;
  transition: border-color var(--transition-fast);
}

.settings-input:focus {
  outline: none;
  border-color: var(--accent);
}

.settings-input::placeholder {
  color: var(--text-muted);
}

.settings-btn-row {
  display: flex;
  gap: 8px;
}

.settings-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 8px 16px;
}

.settings-error {
  font-size: 12px;
  color: #f87171;
  margin-top: 10px;
  padding: 8px 12px;
  background: rgba(248, 113, 113, 0.08);
  border-radius: 6px;
}

.settings-success {
  font-size: 12px;
  color: #4ade80;
  margin-top: 10px;
  padding: 8px 12px;
  background: rgba(74, 222, 128, 0.08);
  border-radius: 6px;
}

/* ═══════════════════════════════════════════════
   Size Tool
   ═══════════════════════════════════════════════ */
#page-size.active {
  display: flex;
}

.size-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

.size-scroll::-webkit-scrollbar { width: 4px; }
.size-scroll::-webkit-scrollbar-track { background: transparent; }
.size-scroll::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

.size-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: flex-start;
}

.size-section {
  flex: 1;
  min-width: 220px;
}


.size-section-header {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0 12px 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.size-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.size-table th {
  text-align: left;
  padding: 6px 12px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.size-row {
  transition: background var(--transition-fast);
  cursor: pointer;
}

.size-row:hover {
  background: var(--bg-elevated);
}

.size-row:active {
  background: var(--bg-active);
}

.size-row.copied {
  background: var(--accent-subtle);
}

.size-row.copied .size-dim-mono {
  color: var(--accent);
}

.size-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 12px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1000;
}

.size-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.size-row td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.size-name-text {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
}

.size-dim-mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════
   Compress Tool
   ═══════════════════════════════════════════════ */
#page-compress.active {
  display: flex;
}

.comp-panel {
  width: 264px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

.comp-panel::-webkit-scrollbar { width: 4px; }
.comp-panel::-webkit-scrollbar-track { background: transparent; }
.comp-panel::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

/* ─── Drop Zone ─── */
.comp-drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 18px 12px;
  border: 1.5px dashed var(--border-focus);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.comp-drop-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-subtle), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.comp-drop-zone:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.comp-drop-zone:hover::before {
  opacity: 1;
}

.comp-drop-zone.dragover {
  border-color: var(--accent);
  background: var(--bg-hover);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.comp-drop-zone.dragover::before {
  opacity: 1;
}

.comp-drop-zone:hover .drop-icon {
  color: var(--accent);
  transform: translateY(-1px);
}

.comp-drop-zone p {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.comp-drop-zone .drop-sub {
  font-size: 10px;
  color: var(--text-muted);
  position: relative;
}

/* ─── Format Buttons ─── */
.comp-format-group {
  display: flex;
  gap: 2px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 2px;
}

.comp-format-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.comp-format-btn:hover {
  color: var(--text-secondary);
}

.comp-format-btn.active {
  background: var(--bg-active);
  color: var(--text-primary);
  font-weight: 550;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* ─── Quality Slider ─── */
.comp-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-active);
  outline: none;
  cursor: pointer;
}

.comp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.comp-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.comp-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

.comp-quality-val {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0;
  text-transform: none;
}

.comp-slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 9px;
  color: var(--text-muted);
}

/* ─── Summary ─── */
.comp-summary {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.comp-summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 11px;
  color: var(--text-secondary);
}

.comp-summary-val {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
}

.comp-summary-diff {
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  padding-top: 6px;
}

.comp-green {
  color: var(--success) !important;
}

.comp-red {
  color: var(--danger) !important;
}

/* ─── Action Buttons ─── */
.comp-action-btn {
  width: 100%;
  justify-content: center;
  padding: 8px 12px;
  font-size: 12px;
}

.btn--ghost.comp-action-btn {
  color: var(--text-muted);
}

.btn--ghost.comp-action-btn:hover {
  color: var(--text-primary);
}

/* ─── Main Area ─── */
.comp-main {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  background: var(--bg-deep);
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

.comp-main::-webkit-scrollbar { width: 6px; }
.comp-main::-webkit-scrollbar-track { background: transparent; }
.comp-main::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

.comp-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 300px;
  color: var(--text-muted);
  gap: 12px;
}

.comp-empty p {
  font-size: 12px;
}

/* ─── Card Grid ─── */
.comp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.comp-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
  position: relative;
}

.comp-card:hover {
  border-color: var(--border-focus);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.comp-card-preview {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}

.comp-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.comp-card-info {
  padding: 10px 12px;
}

.comp-card-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 4px;
}

.comp-card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  margin-bottom: 2px;
}

.comp-card-badge {
  font-size: 9px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.comp-badge-original {
  background: var(--bg-active);
  color: var(--text-secondary);
}

.comp-badge-output {
  background: var(--accent-subtle);
  color: var(--accent);
}

.comp-badge-kept {
  background: var(--bg-hover);
  color: var(--text-muted);
}

.comp-card-kept-note {
  font-size: 9px;
  color: var(--text-muted);
  margin-left: auto;
}

.comp-card.kept-original {
  border-color: var(--border);
  opacity: 0.7;
}

.comp-card-type {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
}

.comp-card-original {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  margin-left: auto;
}

.comp-card-result {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 0 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  font-size: 10px;
}

.comp-card-result-pending {
  color: var(--text-muted);
}

.comp-card-output {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
}

.comp-card-pct {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  margin-left: auto;
}

.comp-card.has-result {
  border-color: var(--border-focus);
}

.comp-card-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.6);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-fast);
  backdrop-filter: blur(4px);
}

.comp-card:hover .comp-card-remove {
  opacity: 1;
}

.comp-card-remove:hover {
  background: var(--danger);
  color: #fff;
}

/* ─── Processing State ─── */
.comp-card.processing .comp-card-preview img {
  opacity: 0.4;
}

.comp-card-spinner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.comp-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: compSpin 0.8s linear infinite;
}

@keyframes compSpin {
  to { transform: rotate(360deg); }
}

/* ─── Disabled State ─── */
.comp-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.comp-hint {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.4;
}

/* ─── Codec Badge ─── */
.comp-codec-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  font-size: 10px;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.comp-codec-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
}

.comp-codec-status.loaded {
  color: var(--success);
}

.comp-codec-status.failed {
  color: var(--danger);
}