.contact-form-container {
            max-width: 600px;
            margin: 0 auto;
            padding: 20px;
        }
        
        .error-message {
            color: #666666;
            font-size: 14px;
            margin-top: 5px;
        }
        
        .success-message {
            background-color: #333333;
            color: white;
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 2px rgba(0,0,0,0.3);
            animation: slideDown 0.5s ease-out;
            display: flex;
            justify-content: space-between;
            align-items: center;
            opacity: 1;
            transition: opacity 0.5s ease-out;
            border-left: 4px solid #666666;
        }
        
        .success-message.fade-out {
            opacity: 0;
        }
        
        .error-notification {
            background-color: #555555;
            color: white;
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 5px rgba(0,0,0,0.3);
            animation: slideDown 0.5s ease-out;
            display: flex;
            justify-content: space-between;
            align-items: center;
            opacity: 1;
            transition: opacity 0.5s ease-out;
            border-left: 4px solid #888888;
        }
        
        .error-notification.fade-out {
            opacity: 0;
        }
        
        .close-btn {
            background: none;
            border: none;
            color: white;
            font-size: 20px;
            cursor: pointer;
            padding: 0;
            margin-left: 15px;
            width: 25px;
            height: 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: background-color 0.3s;
        }
        
        .close-btn:hover {
            background-color: rgba(255,255,255,0.2);
        }
        
        @keyframes slideDown {
            from {
                transform: translateY(-100%);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .required {
            color: #666666;
        }
        
        .w3-input:focus {
            border-color: #333333 !important;
        }
        
        .w3-textarea:focus {
            border-color: #333333 !important;
        }
        
        .loading {
            opacity: 0.7;
            pointer-events: none;
        }
        
        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid #333333;
            border-radius: 50%;
            width: 20px;
            height: 20px;
            animation: spin 1s linear infinite;
            display: inline-block;
            margin-right: 10px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        html {
            scroll-behavior: smooth;
        }