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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f0f2f5;
    min-height: 100vh;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 900px;
    width: 100%;
    padding: 40px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

header h1 {
    color: #1a1a2e;
    font-size: 28px;
}

header p {
    color: #666;
    font-size: 16px;
}

.form-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #fafafa;
    border-radius: 8px;
    border: 1px solid #eaeaea;
}

.form-section h2 {
    color: #333;
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
    display: inline-block;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 15px;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

.form-group.full-width {
    flex: 0 0 100%;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #444;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

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

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.btn-submit {
    flex: 1;
    padding: 14px 24px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.btn-submit:hover {
    background: #0056b3;
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-reset {
    padding: 14px 24px;
    background: #f0f0f0;
    color: #555;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.btn-reset:hover {
    background: #e0e0e0;
}

.response-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    display: none;
    font-weight: 600;
}

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

.response-message.failure {
    display: block;
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

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

.response-details {
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    display: none;
    font-size: 14px;
    white-space: pre-wrap;
    word-break: break-all;
}

@media (max-width: 768px) {
    .container { padding: 20px; }
    .form-row { flex-direction: column; gap: 15px; }
    .form-group { min-width: 100%; }
    .form-actions { flex-direction: column; }
    .btn-submit, .btn-reset { width: 100%; }
}