body {
      box-sizing: border-box;
    }
    
    .canary-gradient {
      background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #fbbf24 100%);
    }
    
    .form-container {
      backdrop-filter: blur(10px);
      background: rgba(255, 255, 255, 0.95);
    }
    
    .input-focus:focus {
      outline: none;
      border-color: #3b82f6;
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    
    .submit-button {
      background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
      transition: all 0.3s ease;
    }
    
    .submit-button:hover:not(:disabled) {
      background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
    }
    
    .submit-button:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }
    
    .success-message {
      animation: slideIn 0.5s ease-out;
    }
    
    @keyframes slideIn {
      from {
        opacity: 0;
        transform: translateY(-20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    .spinner {
      border: 3px solid rgba(255, 255, 255, 0.3);
      border-radius: 50%;
      border-top: 3px solid white;
      width: 20px;
      height: 20px;
      animation: spin 1s linear infinite;
    }
    
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }