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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

header h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

header h2 {
    font-size: 1.5em;
    font-weight: 400;
    margin-bottom: 20px;
    opacity: 0.95;
}

.intro {
    font-size: 1.05em;
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.95;
    text-align: left;
}

form {
    padding: 40px 30px;
}

.form-section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h3 {
    color: #667eea;
    font-size: 1.5em;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px solid #667eea;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    font-size: 1.05em;
}

.sub-label {
    font-weight: 500;
    color: #666;
    font-size: 0.95em;
    margin-top: 10px;
}

.required {
    color: #e74c3c;
    font-weight: bold;
}

input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1em;
    font-family: inherit;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

.radio-label,
.checkbox-label {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.radio-label:hover,
.checkbox-label:hover {
    background: #e9ecef;
    border-color: #667eea;
    transform: translateX(5px);
}

.radio-label input[type="radio"],
.checkbox-label input[type="checkbox"] {
    margin-right: 12px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #667eea;
}

.radio-label input[type="radio"]:checked,
.checkbox-label input[type="checkbox"]:checked {
    accent-color: #667eea;
}

.radio-label:has(input:checked),
.checkbox-label:has(input:checked) {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.form-actions {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid #f0f0f0;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 16px 50px;
    font-size: 1.2em;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

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

.thank-you {
    text-align: center;
    margin-top: 20px;
    font-size: 1.1em;
    color: #667eea;
    font-weight: 600;
}

/* Success and Error Messages */
.message {
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 1.1em;
    text-align: center;
    font-weight: 600;
}

.success-message {
    background: #d4edda;
    color: #155724;
    border: 2px solid #c3e6cb;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    border: 2px solid #f5c6cb;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        border-radius: 10px;
    }

    header {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 1.8em;
    }

    header h2 {
        font-size: 1.2em;
    }

    .intro {
        font-size: 0.95em;
    }

    form {
        padding: 30px 20px;
    }

    .form-section h3 {
        font-size: 1.3em;
    }

    .submit-btn {
        width: 100%;
        padding: 14px 30px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }

    header h2 {
        font-size: 1.1em;
    }

    .intro {
        font-size: 0.9em;
    }

    form {
        padding: 20px 15px;
    }

    .form-section h3 {
        font-size: 1.2em;
    }

    label {
        font-size: 1em;
    }

    .radio-label,
    .checkbox-label {
        padding: 10px 12px;
    }
}