/* ==========================================================================
   IMMERSIVE FOCUS STUDIO ENHANCEMENTS (GroupStudyTimer-Inspired)
   ========================================================================== */

/* 1. Dynamic Studio Background & Glass Dimmer */
.studio-bg-layer {
  position: fixed;
  top: -10vh;
  left: -5vw;
  right: -5vw;
  bottom: -15vh;
  width: 110vw;
  height: 125vh;
  height: 125dvh;
  min-height: 125%;
  z-index: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: background-image 0.4s ease, filter 0.3s ease;
  pointer-events: none;
  opacity: 1;
  will-change: transform;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  overflow: hidden;
}

.studio-bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  transform: translate(-50%, -50%) translateZ(0);
  -webkit-transform: translate(-50%, -50%) translateZ(0);
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.4s ease;
}

.studio-bg-video.hidden {
  display: none !important;
}

.studio-bg-yt-iframe {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100vw;
  height: 56.25vw;
  min-height: 100vh;
  min-width: 177.77vh;
  transform: translate(-50%, -50%) translateZ(0);
  -webkit-transform: translate(-50%, -50%) translateZ(0);
  pointer-events: none;
  z-index: 0;
  border: none;
}

.studio-bg-yt-iframe.hidden {
  display: none !important;
}

.studio-bg-dimmer {
  position: fixed;
  top: -10vh;
  left: -5vw;
  right: -5vw;
  bottom: -15vh;
  width: 110vw;
  height: 125vh;
  height: 125dvh;
  min-height: 125%;
  z-index: 1;
  background: rgba(0, 0, 0, 0.3);
  pointer-events: none;
  transition: background-color 0.3s ease;
  will-change: transform;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

body.has-custom-bg,
body.has-custom-bg .demo-page-body,
body.has-custom-bg .studio-app-layout {
  background: transparent !important;
}

/* Glassmorphism elevation when background wallpaper is active */
body.has-custom-bg .studio-card {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

body.has-custom-bg .metric-card {
  background: rgba(16, 20, 32, 0.62) !important;
  backdrop-filter: blur(20px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(190%) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3) !important;
}

[data-theme="light"] body.has-custom-bg .metric-card {
  background: rgba(255, 255, 255, 0.65) !important;
  backdrop-filter: blur(20px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(190%) !important;
  border: 1px solid rgba(255, 255, 255, 0.6) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08) !important;
}

body.has-custom-bg .hub-card,
body.has-custom-bg .calendar-card,
body.has-custom-bg .planner-card,
body.has-custom-bg .timeline-card,
body.has-custom-bg .analytics-chart-card {
  background: rgba(14, 18, 28, 0.65) !important;
  backdrop-filter: blur(24px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(190%) !important;
  border: 1px solid rgba(255, 255, 255, 0.14) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

body.has-custom-bg .studio-floating-topbar,
body.has-custom-bg .app-sidebar {
  background: rgba(12, 16, 26, 0.38) !important;
  backdrop-filter: blur(28px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(28px) saturate(200%) !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] body.has-custom-bg .hub-card,
[data-theme="light"] body.has-custom-bg .calendar-card,
[data-theme="light"] body.has-custom-bg .planner-card,
[data-theme="light"] body.has-custom-bg .timeline-card,
[data-theme="light"] body.has-custom-bg .analytics-chart-card {
  background: rgba(255, 255, 255, 0.68) !important;
  backdrop-filter: blur(24px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(190%) !important;
  border: 1px solid rgba(255, 255, 255, 0.6) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] body.has-custom-bg .studio-floating-topbar,
[data-theme="light"] body.has-custom-bg .app-sidebar {
  background: rgba(255, 255, 255, 0.45) !important;
  backdrop-filter: blur(28px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(28px) saturate(200%) !important;
  border: 1px solid rgba(255, 255, 255, 0.6) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
}

/* 2. Daily Motivational Quote Capsule */
.daily-quote-capsule {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.daily-quote-capsule:hover {
  border-color: var(--border-default);
  background: rgba(255, 255, 255, 0.07);
}

.quote-sparkle-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
}

.quote-text {
  font-style: italic;
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
  text-align: center;
}

.quote-refresh-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
}

.quote-refresh-btn svg {
  width: 14px;
  height: 14px;
}

.quote-refresh-btn:hover {
  color: var(--accent-blue);
  transform: rotate(90deg);
}

/* 3. Focus Audio & Ambience Player Bar */
.focus-audio-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition-fast);
}

.focus-audio-bar:hover {
  border-color: var(--border-default);
}

.audio-track-info {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.audio-equalizer-bars {
  display: flex;
  align-items: flex-end;
  gap: 2.5px;
  height: 14px;
  width: 14px;
  flex-shrink: 0;
}

.eq-bar {
  width: 3px;
  background: var(--text-muted);
  border-radius: 1px;
  height: 4px;
  transition: height 0.2s ease, background-color 0.2s ease;
}

.audio-equalizer-bars.is-playing .eq-bar {
  background: var(--accent-blue);
  animation: eq-bounce 1.2s infinite ease-in-out alternate;
}

.audio-equalizer-bars.is-playing .eq-bar:nth-child(1) {
  animation-delay: 0s;
}
.audio-equalizer-bars.is-playing .eq-bar:nth-child(2) {
  animation-delay: 0.3s;
}
.audio-equalizer-bars.is-playing .eq-bar:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes eq-bounce {
  0% { height: 3px; }
  50% { height: 14px; }
  100% { height: 6px; }
}

.audio-current-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-controls-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Custom Glassmorphic Track Picker UI */
.custom-audio-dropdown-wrap {
  position: relative;
  display: inline-flex;
}

.custom-audio-select-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card, rgba(20, 24, 36, 0.8));
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius-md, 10px);
  color: var(--text-primary, #ffffff);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 10px;
  cursor: pointer;
  outline: none;
  max-width: 175px;
  transition: all var(--transition-fast, 0.2s ease);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  white-space: nowrap;
}

.custom-audio-select-btn:hover,
.custom-audio-select-btn:focus-visible {
  border-color: var(--accent-blue, #3b82f6);
  background: var(--bg-card-hover, rgba(30, 36, 54, 0.9));
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
}

.custom-audio-btn-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
}

.custom-audio-btn-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.76rem;
  max-width: 110px;
}

.custom-audio-chevron {
  width: 13px;
  height: 13px;
  color: var(--text-muted, #71717a);
  flex-shrink: 0;
  transition: transform var(--transition-fast, 0.2s ease);
}

.custom-audio-select-btn[aria-expanded="true"] .custom-audio-chevron {
  transform: rotate(180deg);
}

/* Dropdown Menu Popup (Desktop & Mobile-Optimized) */
.custom-audio-menu {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 0;
  width: 285px;
  background: rgba(15, 19, 32, 0.96);
  backdrop-filter: blur(28px) saturate(190%);
  -webkit-backdrop-filter: blur(28px) saturate(190%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
  padding: 8px;
  z-index: 10005;
  display: flex;
  flex-direction: column;
  animation: audioPopupIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: bottom left;
}

[data-theme="light"] .custom-audio-menu {
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(0, 0, 0, 0.12);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.14), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

@keyframes audioPopupIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.custom-audio-menu.hidden {
  display: none !important;
}

.custom-audio-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px 8px;
  border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  margin-bottom: 6px;
}

.custom-audio-menu-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted, #94a3b8);
}

.custom-audio-menu-close {
  background: transparent;
  border: none;
  color: var(--text-muted, #71717a);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  border-radius: var(--radius-sm, 6px);
  transition: color var(--transition-fast, 0.15s ease);
}

.custom-audio-menu-close:hover {
  color: var(--text-primary, #ffffff);
}

.custom-audio-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 2px;
  scrollbar-width: thin;
}

.custom-audio-list::-webkit-scrollbar {
  width: 4px;
}

.custom-audio-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.custom-audio-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-md, 10px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary, #cbd5e1);
  cursor: pointer;
  text-align: left;
  width: 100%;
  box-sizing: border-box;
  transition: all var(--transition-fast, 0.15s ease);
}

.custom-audio-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary, #ffffff);
  transform: translateX(2px);
}

[data-theme="light"] .custom-audio-item:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-primary, #09090b);
}

.custom-audio-item.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.35);
  color: #60a5fa;
  font-weight: 600;
}

[data-theme="light"] .custom-audio-item.active {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.3);
  color: #2563eb;
}

.audio-item-emoji {
  font-size: 1.15rem;
  flex-shrink: 0;
}

.audio-item-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.audio-item-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: inherit;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-item-sub {
  font-size: 0.68rem;
  color: var(--text-muted, #71717a);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-item-check {
  width: 14px;
  height: 14px;
  color: #3b82f6;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--transition-fast, 0.15s ease);
}

.custom-audio-item.active .audio-item-check {
  opacity: 1;
}

.custom-audio-menu-divider {
  height: 1px;
  background: var(--border-subtle, rgba(255, 255, 255, 0.08));
  margin: 4px 0;
}

.custom-audio-item-custom {
  color: var(--text-primary, #ffffff);
}

.custom-audio-item-custom:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.25);
}

.audio-item-chevron {
  width: 14px;
  height: 14px;
  color: var(--text-muted, #71717a);
  flex-shrink: 0;
}

/* Mobile & Android Responsive Audio Picker */
@media (max-width: 768px) {
  .custom-audio-menu {
    position: fixed !important;
    bottom: 68px !important;
    left: 12px !important;
    right: 12px !important;
    width: auto !important;
    max-width: 390px !important;
    margin: 0 auto !important;
    max-height: 70vh !important;
    border-radius: 20px !important;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.1) !important;
    z-index: 100005 !important;
    transform-origin: bottom center !important;
  }
}

.audio-preset-select.hidden-audio-select {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.audio-play-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: #ffffff;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.audio-play-toggle-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.45);
}

.audio-play-toggle-btn svg {
  width: 14px;
  height: 14px;
}

.audio-volume-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.audio-vol-icon {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

.audio-vol-slider {
  width: 70px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  outline: none;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.audio-vol-slider:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(59, 130, 246, 0.4);
}

.audio-vol-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.5);
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.15s ease;
}

.audio-vol-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.5);
  cursor: pointer;
}

.audio-vol-slider::-webkit-slider-thumb:hover,
.audio-vol-slider:active::-webkit-slider-thumb {
  transform: scale(1.25);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.7);
}

/* 4. 4-Card Glanceable Status Metrics Grid */
.status-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-align: center;
  backdrop-filter: blur(8px);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.metric-card:hover {
  border-color: var(--border-default);
  transform: translateY(-1px);
}

.metric-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.metric-value {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metric-value.highlight-fire {
  color: #f59e0b;
}

/* 5. Studio Background Customizer Modal & Presets */
.bg-section-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.bg-preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(115px, 1fr));
  gap: 10px;
}

.bg-preset-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px;
  background: var(--bg-subtle);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.bg-preset-card:hover {
  border-color: var(--border-default);
  color: var(--text-primary);
}

.bg-preset-card.active {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
  color: var(--accent-blue);
}

.bg-preset-preview {
  width: 100%;
  height: 56px;
  border-radius: var(--radius-sm);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.2s ease, filter 0.2s ease;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.bg-preset-card:hover .bg-preset-preview {
  transform: scale(1.05);
}

.bg-preset-preview.default-bg {
  background: radial-gradient(circle at top right, #1f2438, #09090b);
}

.bg-preset-preview.lofi-bg {
  background-image: url("https://images.unsplash.com/photo-1518495973542-4542c06a5843?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.rain-bg {
  background-image: url("https://images.unsplash.com/photo-1515694346937-94d85e41e6f0?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.library-bg {
  background-image: url("https://images.unsplash.com/photo-1521587760476-6c12a4b040da?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.space-bg {
  background-image: url("https://images.unsplash.com/photo-1506703719100-a0f3a48c0f86?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.forest-bg {
  background-image: url("https://images.unsplash.com/photo-1448375240586-882707db888b?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.tokyo-bg {
  background-image: url("https://images.unsplash.com/photo-1503899036084-c55cdd92da26?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.sunset-bg {
  background-image: url("https://images.unsplash.com/photo-1495616811223-4d98c6e9c869?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.cafe-bg {
  background-image: url("https://images.unsplash.com/photo-1501339847302-ac426a4a7cbb?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.amoled-bg {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.bg-preset-preview.v-rain-bg {
  background-image: url("https://images.unsplash.com/photo-1515694346937-94d85e41e6f0?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview.v-space-bg {
  background-image: url("https://images.unsplash.com/photo-1506703719100-a0f3a48c0f86?q=80&w=320&auto=format&fit=crop");
}

.bg-preset-preview {
  position: relative;
}

.bg-video-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  padding: 2px 6px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 6px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #a78bfa;
  border: 1px solid rgba(167, 139, 250, 0.4);
  display: flex;
  align-items: center;
  gap: 3px;
  z-index: 2;
}

.bg-type-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  padding: 4px;
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.bg-type-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.bg-type-tab:hover {
  color: var(--text-primary);
}

.bg-type-tab.active {
  background: var(--bg-card);
  color: var(--accent-purple, #8b5cf6);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.bg-upload-zone {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: var(--bg-subtle);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-md);
}

.bg-upload-options-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.bg-url-input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.bg-url-preview-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-top: 4px;
  transition: all var(--transition-fast);
}

.bg-url-preview-card.is-valid {
  border-color: rgba(16, 185, 129, 0.45);
  background: rgba(16, 185, 129, 0.06);
}

.bg-url-preview-card.is-error {
  border-color: rgba(239, 68, 68, 0.45);
  background: rgba(239, 68, 68, 0.07);
}

.bg-url-preview-thumb-wrap {
  width: 64px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

.bg-url-preview-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bg-url-preview-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.bg-url-preview-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  flex: 1;
}

.bg-url-preview-status {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
}

.bg-url-preview-card.is-valid .bg-url-preview-status {
  color: #10b981;
}

.bg-url-preview-card.is-error .bg-url-preview-status {
  color: #ef4444;
}

.bg-url-preview-msg {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.yt-suggestions-label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 12px 0 6px;
}

.yt-suggestions-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.yt-suggestion-chip {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  padding: 4px 10px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.yt-suggestion-chip:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.bg-sliders-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.bg-slider-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bg-slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.modal-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  outline: none;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.modal-slider:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(59, 130, 246, 0.4);
}

.modal-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.5);
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.15s ease;
}

.modal-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.5);
  cursor: pointer;
}

.modal-slider::-webkit-slider-thumb:hover,
.modal-slider:active::-webkit-slider-thumb {
  transform: scale(1.25);
  box-shadow: 0 0 14px rgba(59, 130, 246, 0.7);
}