/* PWA Update Banner */
      .pwa-update-banner {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        background: #1e293b;
        color: white;
        padding: 12px 20px;
        border-radius: 12px;
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        z-index: 10001;
        animation: slideUp 0.3s ease;
      }
      
      .pwa-update-content {
        display: flex;
        align-items: center;
        gap: 12px;
      }
      
      .pwa-update-btn {
        background: #22c55e;
        color: white;
        border: none;
        padding: 8px 16px;
        border-radius: 8px;
        font-weight: 600;
        cursor: pointer;
        transition: background 0.2s;
      }
      
      .pwa-update-btn:hover {
        background: #16a34a;
      }
      
      .pwa-update-close {
        background: transparent;
        border: none;
        color: #94a3b8;
        font-size: 20px;
        cursor: pointer;
        padding: 4px 8px;
      }
      
      /* Offline Indicator */
      #offline-indicator {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: linear-gradient(90deg, #ef4444, #dc2626);
        color: white;
        text-align: center;
        padding: 8px 16px;
        font-size: 13px;
        font-weight: 500;
        z-index: 10002;
        transform: translateY(-100%);
        transition: transform 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
      }
      
      #offline-indicator.visible {
        transform: translateY(0);
      }
      
      #offline-indicator.hidden {
        transform: translateY(-100%);
      }
      
      #offline-indicator svg {
        width: 16px;
        height: 16px;
      }
      
      /* Notification Toggle Button */
      .notification-toggle {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 12px 16px;
        background: #f8fafc;
        border: 1px solid #e2e8f0;
        border-radius: 10px;
        cursor: pointer;
        transition: all 0.2s;
        width: 100%;
        text-align: left;
      }
      
      .notification-toggle:hover {
        background: #f1f5f9;
      }
      
      .dark .notification-toggle {
        background: #1e293b;
        border-color: #334155;
      }
      
      .dark .notification-toggle:hover {
        background: #334155;
      }
      
      .notification-toggle[data-subscribed="true"] {
        border-color: #22c55e;
        background: rgba(34, 197, 94, 0.1);
      }
      
      .notification-toggle .notification-icon {
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #64748b;
      }
      
      .notification-toggle[data-subscribed="true"] .notification-icon {
        color: #22c55e;
      }
      
      .notification-toggle .notification-text {
        flex: 1;
        font-size: 14px;
        color: #334155;
      }
      
      .dark .notification-toggle .notification-text {
        color: #e2e8f0;
      }
      
      @keyframes slideUp {
        from {
          transform: translate(-50%, 100%);
          opacity: 0;
        }
        to {
          transform: translate(-50%, 0);
          opacity: 1;
        }
      }