* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f5f5;
            min-height: 100vh;
            padding: 40px 20px;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            overflow: hidden;
        }

        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 40px;
            text-align: center;
        }

        .header h1 {
            font-size: 32px;
            margin-bottom: 10px;
        }

        .header p {
            font-size: 16px;
            opacity: 0.9;
        }

        .form-content {
            padding: 40px;
        }

        .section {
            margin-bottom: 40px;
        }

        .section:last-of-type {
            margin-bottom: 20px;
        }

        .section-title {
            font-size: 22px;
            color: #333;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid #667eea;
            display: inline-block;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group.full-width {
            grid-column: 1 / -1;
        }

        label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #555;
            margin-bottom: 8px;
        }

        label .required {
            color: #e74c3c;
        }

        input, select {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            transition: all 0.3s ease;
            font-family: inherit;
        }

        input:focus, select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        input.error {
            border-color: #e74c3c;
        }

        .error-message {
            color: #e74c3c;
            font-size: 13px;
            margin-top: 5px;
            display: none;
        }

        .error-message.show {
            display: block;
        }

        .submit-btn {
            width: 100%;
            padding: 16px;
            font-size: 18px;
            font-weight: 600;
            color: white;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            margin-top: 20px;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
        }

        .submit-btn:active {
            transform: translateY(0);
        }

        .success-message {
            background: #d4edda;
            color: #155724;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: none;
            border: 1px solid #c3e6cb;
        }

        .success-message.show {
            display: block;
        }

        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }

            .form-content {
                padding: 30px 20px;
            }

            .header {
                padding: 30px 20px;
            }

            .header h1 {
                font-size: 26px;
            }
        }