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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.card h2 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.5em;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #888;
    font-size: 0.9em;
}

.form-group small a {
    color: #667eea;
    text-decoration: none;
}

.form-group small a:hover {
    text-decoration: underline;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.result-box {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    display: none;
    max-height: 500px;
    overflow-y: auto;
}

.result-box.show {
    display: block;
}

.result-box.success {
    border-left-color: #28a745;
    background: #d4edda;
}

.result-box.error {
    border-left-color: #dc3545;
    background: #f8d7da;
}

.result-box.warning {
    border-left-color: #ffc107;
    background: #fff3cd;
}

.result-box pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #dee2e6;
}

.result-header h3 {
    margin: 0;
    color: #333;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
}

.badge-success {
    background: #28a745;
    color: white;
}

.badge-error {
    background: #dc3545;
    color: white;
}

.badge-info {
    background: #17a2b8;
    color: white;
}

.latency-info {
    color: #6c757d;
    font-size: 0.9em;
    margin-top: 5px;
}

.code-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.code-table thead {
    background: #667eea;
    color: white;
}

.code-table th,
.code-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.code-table tbody tr:hover {
    background: #f8f9fa;
}

.code-table tbody tr.success {
    background: #d4edda;
}

.code-table tbody tr.success:hover {
    background: #c3e6cb;
}

footer {
    text-align: center;
    color: white;
    margin-top: 40px;
    padding: 20px;
}

footer a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    opacity: 0.9;
}

footer a:hover {
    opacity: 1;
    text-decoration: underline;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .card {
        padding: 15px;
    }
    
    .code-table {
        font-size: 0.9em;
    }
    
    .code-table th,
    .code-table td {
        padding: 8px;
    }
}