* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    width: 360px !important;
    min-width: 360px !important;
    max-width: 360px !important;
    min-height: 480px;
    background: #f8fafc;
    color: #1e293b;
    overflow-x: hidden;
    line-height: 1.5;
  }
  
  .app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  /* Header */
  .header {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 16px 20px;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.2);
  }
  
  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  
  .logo-icon {
    font-size: 20px;
  }
  
  .logo-text {
    font-size: 16px;
    font-weight: 600;
  }
  
  /* Power Toggle */
  .power-toggle {
    position: relative;
  }
  
  .toggle-input {
    display: none;
  }
  
  .toggle-label {
    display: block;
    width: 48px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
  }
  
  .toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  }
  
  .toggle-input:checked + .toggle-label {
    background: rgba(34, 197, 94, 0.3);
  }
  
  .toggle-input:checked + .toggle-label .toggle-slider {
    transform: translateX(20px);
    background: #22c55e;
  }
  
  /* Content */
  .content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  
  /* Cards */
  .status-card,
  .control-card {
    background: white;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.2s ease;
  }
  
  .control-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
  
  /* Status Card */
  .status-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
  }
  
  .status-icon {
    font-size: 18px;
  }
  
  .status-info {
    flex: 1;
  }
  
  .status-title {
    font-weight: 600;
    font-size: 14px;
    color: #1e293b;
  }
  
  .status-subtitle {
    font-size: 12px;
    color: #64748b;
  }
  
  .icon-btn {
    background: #f1f5f9;
    border: none;
    border-radius: 8px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
  }
  
  .icon-btn:hover {
    background: #e2e8f0;
    transform: rotate(180deg);
  }
  
  .video-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #f8fafc;
    border-radius: 8px;
    font-size: 12px;
    color: #64748b;
  }
  
  .indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #cbd5e1;
    transition: all 0.3s ease;
  }
  
  .indicator-dot.active {
    background: #22c55e;
    animation: pulse 2s infinite;
  }
  
  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }
  
  /* Card Headers */
  .card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-weight: 600;
    font-size: 14px;
  }
  
  .card-header.clickable {
    cursor: pointer;
    padding: 4px 0;
    transition: all 0.2s ease;
  }
  
  .card-header.clickable:hover {
    color: #6366f1;
  }
  
  .card-icon {
    font-size: 16px;
  }
  
  .card-title {
    flex: 1;
  }
  
  .expand-icon {
    font-size: 12px;
    transition: transform 0.3s ease;
  }
  
  .card-header.collapsed .expand-icon {
    transform: rotate(-90deg);
  }
  
  .card-content {
    max-height: 300px;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  
  .card-content.collapsed {
    max-height: 0;
  }
  
  /* Speed Display */
  .current-speed {
    text-align: center;
    margin-bottom: 20px;
  }
  
  .speed-value {
    font-size: 32px;
    font-weight: 700;
    color: #6366f1;
  }
  
  .speed-unit {
    font-size: 18px;
    color: #64748b;
    margin-left: 4px;
  }
  
  /* Speed Slider */
  .speed-slider-container {
    margin-bottom: 20px;
  }
  
  .speed-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #e2e8f0;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
  }
  
  .speed-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #6366f1;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
    transition: all 0.2s ease;
  }
  
  .speed-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
  }
  
  .speed-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #6366f1;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
  }
  
  .slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 11px;
    color: #64748b;
  }
  
  /* Quick Speed Buttons */
  .quick-speeds {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
  }
  
  .speed-preset {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 8px 4px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #475569;
  }
  
  .speed-preset:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
  }
  
  .speed-preset.active {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
  }
  
  /* Main Controls */
  .main-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }
  
  .control-btn {
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-weight: 500;
  }
  
  .control-btn.primary {
    background: #6366f1;
    color: white;
    width: 56px;
    height: 56px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  }
  
  .control-btn.primary:hover {
    background: #5b5bd6;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
  }
  
  .control-btn.secondary {
    background: #f8fafc;
    color: #475569;
    width: 48px;
    height: 48px;
    border: 1px solid #e2e8f0;
  }
  
  .control-btn.secondary:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
  }
  
  .control-icon {
    font-size: 20px;
  }
  
  .control-text {
    font-size: 10px;
  }
  
  /* Skip Options */
  .skip-options {
    display: flex;
    justify-content: center;
    gap: 8px;
  }
  
  .skip-btn {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #475569;
  }
  
  .skip-btn:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
  }
  
  /* Settings */
  .setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #f1f5f9;
  }
  
  .setting-row:last-child {
    border-bottom: none;
  }
  
  .setting-info {
    flex: 1;
  }
  
  .setting-label {
    font-weight: 500;
    font-size: 14px;
    color: #1e293b;
  }
  
  .setting-desc {
    font-size: 12px;
    color: #64748b;
  }
  
  .setting-control {
    margin-left: 16px;
  }
  
  .setting-toggle {
    display: none;
  }
  
  .toggle-label.mini {
    width: 36px;
    height: 20px;
    background: #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: block;
  }
  
  .toggle-label.mini .toggle-slider {
    width: 16px;
    height: 16px;
    top: 2px;
    left: 2px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  }
  
  .setting-toggle:checked + .toggle-label.mini {
    background: #6366f1;
  }
  
  .setting-toggle:checked + .toggle-label.mini .toggle-slider {
    transform: translateX(16px);
  }
  
  /* Keyboard Shortcuts */
  .shortcuts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .shortcut-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 8px;
    background: #f8fafc;
    border-radius: 8px;
    font-size: 11px;
  }
  
  kbd {
    background: #e2e8f0;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 10px;
    font-family: monospace;
    color: #374151;
    margin: 0 2px;
  }
  
  /* Footer */
  .footer {
    background: white;
    border-top: 1px solid #e2e8f0;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .footer-btn {
    background: none;
    border: none;
    color: #6366f1;
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
  }
  
  .footer-btn:hover {
    background: #f1f5f9;
  }
  
  .footer-info {
    font-size: 11px;
    color: #64748b;
  }
  
  /* Toast Notifications */
  .toast-container {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  .toast {
    background: #1e293b;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
  }
  
  .toast.show {
    transform: translateX(0);
    opacity: 1;
  }
  
  .toast.success {
    background: #22c55e;
  }
  
  .toast.error {
    background: #ef4444;
  }
  
  /* Animations */
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .control-card {
    animation: fadeIn 0.3s ease;
  }
  
  /* Responsive adjustments */
  @media (max-height: 600px) {
    .content {
      padding: 16px;
      gap: 12px;
    }
    
    .card-content {
      max-height: 200px;
    }
  }
  
  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 4px;
  }
  
  ::-webkit-scrollbar-track {
    background: #f1f5f9;
  }
  
  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 2px;
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
  }