* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #cccccc 0%, #eeeeee 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
            max-width: 600px;
            width: 100%;
            padding: 40px;
        }
        
        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
        }
        
        .form-section {
            margin-bottom: 30px;
        }
        
        .form-section h2 {
            color: #667eea;
            font-size: 1.2em;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #667eea;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 5px;
            color: #555;
            font-weight: bold;
        }
        
        label .required {
            color: red;
        }
        
        input[type="text"],
        input[type="email"],
        input[type="password"],
        input[type="tel"],
        select,
        textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 14px;
            transition: border-color 0.3s;
        }
        
        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
            border-color: #667eea;
        }
        
        textarea {
            resize: vertical;
            min-height: 80px;
        }
        
        .btn {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }
        
        .btn-secondary {
            background: #6c757d;
            color: white;
            margin-top: 10px;
        }
        
        .btn-secondary:hover {
            background: #5a6268;
        }
        
        .toggle-section {
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #ddd;
        }
        
        .toggle-btn {
            background: none;
            border: none;
            color: #667eea;
            cursor: pointer;
            font-size: 14px;
            text-decoration: underline;
        }
        
        .additional-info {
            display: none;
        }
        
        .additional-info.active {
            display: block;
        }
        
        .message {
            padding: 10px;
            border-radius: 5px;
            margin-bottom: 20px;
            text-align: center;
        }
        
        .message.success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }
        
        .message.error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }
        
        .links {
            text-align: center;
            margin-top: 20px;
        }
        
        .links a {
            color: #667eea;
            text-decoration: none;
        }
        
        .links a:hover {
            text-decoration: underline;
        }
        
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        
        @media (max-width: 600px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }