* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.form-section {
    margin-bottom: 30px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #34495e;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus, select:focus, textarea:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.test-btn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s;
    width: 100%;
}

.test-btn:hover {
    background-color: #2980b9;
}

.test-btn:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.results-section {
    margin-top: 30px;
}

.result-card {
    background-color: #f8f9fa;
    border-radius: 6px;
    padding: 20px;
    border: 1px solid #e9ecef;
}

.result-item {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.result-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 5px;
}

.result-value {
    color: #212529;
}

.response-content {
    background-color: #e9ecef;
    padding: 15px;
    border-radius: 4px;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.status-success {
    color: #28a745;
}

.status-error {
    color: #dc3545;
}

.status-pending {
    color: #ffc107;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #3498db;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
}