* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Times New Roman', Times, serif;
        }

        body {
            background: white;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .container {
            width: 100%;
            max-width: 900px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }

        .header {
            background: #1565c0;
            color: white;
            padding: 25px;
            text-align: center;
        }

        .header h1 {
            font-size: 28px;
            margin-bottom: 5px;
        }

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

        .form-container {
            padding: 30px;
        }

        .form-row {
            display: flex;
            flex-wrap: wrap;
            margin: 0 -10px;
        }

        .form-group {
            flex: 1 0 calc(50% - 20px);
            margin: 0 10px 20px;
            min-width: 250px;
        }

        .form-group.full-width {
            flex: 1 0 calc(100% - 20px);
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #1565c0;
        }

        input, select {
            width: 100%;
            padding: 14px;
            border: 2px solid #bbdefb;
            border-radius: 6px;
            font-size: 16px;
            transition: all 0.3s;
        }

        input:focus, select:focus {
            outline: none;
            border-color: #1565c0;
            box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.2);
        }

        .btn {
            background: #1565c0;
            color: white;
            border: none;
            padding: 16px 32px;
            font-size: 18px;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            display: block;
            margin: 20px auto 10px;
            transition: all 0.3s;
            width: 200px;
        }

        .btn:hover {
            background: #0d47a1;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(13, 71, 161, 0.3);
        }

        .required::after {
            content: " *";
            color: #e53935;
        }

        .message {
            padding: 15px;
            margin: 20px 0;
            border-radius: 5px;
            text-align: center;
            display: none;
        }

        .success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        @media (max-width: 768px) {
            .form-group {
                flex: 1 0 calc(100% - 20px);
            }
            
            .btn {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .header h1 {
                font-size: 24px;
            }
            
            .header {
                padding: 15px;
            }
            
            .form-container {
                padding: 20px;
            }
        }