@view-transition
    { navigation: auto; }
    body {
      box-sizing: border-box;
    }
    
    @keyframes slideIn {
      from {
        transform: translateX(400px);
        opacity: 0;
      }
      to {
        transform: translateX(0);
        opacity: 1;
      }
    }
    
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    
    .toast.show {
      display: block;
      animation: slideIn 0.3s ease;
    }
    
    .loading {
      display: inline-block;
      width: 16px;
      height: 16px;
      border: 2px solid #f3f3f3;
      border-top: 2px solid #3b82f6;
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
    .animate-spin {
        animation: spin 1s linear infinite;
    }