body {
    margin: 0;
    padding: 20px;
    font-family: system-ui, -apple-system, sans-serif;
    background-color: #fafafa;
    background-image: 
        linear-gradient(#e5e5e5 1px, transparent 1px),
        linear-gradient(90deg, #e5e5e5 1px, transparent 1px);
    background-size: 20px 20px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

#diagram {
    background: transparent;
    padding: 40px;
    min-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#graph-svg {
    max-width: 100%;
    height: auto;
}

/* Legend styles */
.legend {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin: 0 auto 30px;
    max-width: 1200px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.legend h2 {
    margin: 0 0 15px 0;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    text-align: left;
}

.legend-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.legend-item:hover {
    background-color: #f9fafb;
}

.legend-badge {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    flex-shrink: 0;
    border-width: 2px;
    border-style: solid;
}

.legend-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.legend-text strong {
    font-size: 13px;
    color: #1f2937;
}

.legend-examples {
    font-size: 11px;
    color: #6b7280;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Badge colors matching graphviz.tmpl */
.badge-database {
    background-color: #60a5fa;
    border-color: #2563eb;
}

.badge-cache {
    background-color: #fbbf24;
    border-color: #f59e0b;
}

.badge-proxy {
    background-color: #c084fc;
    border-color: #7c3aed;
}

.badge-auth {
    background-color: #7ed321;
    border-color: #417505;
}

.badge-messaging {
    background-color: #ff9800;
    border-color: #e65100;
}

.badge-monitoring {
    background-color: #f3f4f6;
    border-color: #9ca3af;
}

.badge-app {
    background-color: #ff6b6b;
    border-color: #c92a2a;
}

.badge-service {
    background-color: #d1d5db;
    border-color: #6b7280;
}

/* Legend sections */
.legend-section {
    margin-bottom: 25px;
}

.legend-section:last-child {
    margin-bottom: 0;
}

.legend-section h3 {
    margin: 0 0 12px 0;
    font-size: 14px;
    font-weight: 600;
    color: #4b5563;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Arrows legend */
.legend-arrows {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.legend-arrow-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.legend-arrow-item:hover {
    background-color: #f9fafb;
}

.legend-arrow-item svg {
    flex-shrink: 0;
}

.legend-arrow-item span {
    font-size: 13px;
    color: #1f2937;
}

.legend-arrow-item code {
    background-color: #f3f4f6;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .legend {
        padding: 15px;
        margin: 0 10px 20px;
    }
    
    .legend-grid {
        grid-template-columns: 1fr;
    }
    
    .legend h2 {
        font-size: 14px;
    }
    
    .legend-section h3 {
        font-size: 12px;
    }
    
    .legend-arrow-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}