:root {
            --primary: #2563eb;
            --secondary: #7c3aed;
            --dark: #1e293b;
            --light: #f8fafc;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --info: #3b82f6;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

/* Syntax highlighting - CRITICAL for code colors */
.keyword { color: #f472b6; }
.class { color: #60a5fa; }
.method { color: #34d399; }
.string { color: #fbbf24; }
.comment { color: #94a3b8; }
.number { color: #a78bfa; }

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #e2e8f0;
            line-height: 1.6;
            min-height: 100vh;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            padding: 3rem 2rem;
            border-radius: 20px;
            margin-bottom: 2rem;
            text-align: center;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
            opacity: 0.1;
        }
        
        .header-content {
            position: relative;
            z-index: 1;
        }
        
        h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: linear-gradient(to right, #fff, #c7d2fe);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        
        .subtitle {
            font-size: 1.3rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .tech-stack {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 2rem;
            flex-wrap: wrap;
        }
        
        .tech-badge {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 8px 20px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .content-grid {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 2rem;
            margin-top: 2rem;
        }
        
        .sidebar {
            background: rgba(30, 41, 59, 0.8);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 2rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            height: fit-content;
            position: sticky;
            top: 20px;
        }
        
        .sidebar h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .nav-list {
            list-style: none;
        }
        
        .nav-list li {
            margin-bottom: 12px;
        }
        
        .nav-list a {
            color: #cbd5e1;
            text-decoration: none;
            padding: 10px 15px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s ease;
        }
        
        .nav-list a:hover {
            background: rgba(59, 130, 246, 0.2);
            color: white;
            transform: translateX(5px);
        }
        
        .nav-list a.active {
            background: var(--primary);
            color: white;
            font-weight: 500;
        }
        
        .main-content {
            background: rgba(30, 41, 59, 0.8);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 2.5rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .section {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .section:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        .section-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 2rem;
        }
        
        .section-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(to right, #fff, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .card {
            background: rgba(15, 23, 42, 0.6);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--primary);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        
        .card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .card-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #fff;
            font-family: 'Courier New', monospace;
        }
        
        .access-badge {
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        .public { background: var(--success); }
        .private { background: var(--danger); }
        .protected { background: var(--warning); }
        
        .card-content {
            color: #cbd5e1;
        }
        
        .summary {
            background: rgba(16, 185, 129, 0.1);
            border-left: 3px solid var(--success);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 8px 8px 0;
        }
        
        .params {
            margin-top: 1rem;
            padding-left: 1.5rem;
        }
        
        .param-item {
            margin-bottom: 8px;
            display: flex;
            gap: 10px;
        }
        
        .param-name {
            color: var(--warning);
            font-weight: 500;
            font-family: 'Courier New', monospace;
            min-width: 100px;
        }
        
        .param-desc {
            color: #94a3b8;
        }
        
        .code-block {
            background: #0f172a;
            border-radius: 10px;
            padding: 1.5rem;
            margin-top: 1.5rem;
            overflow-x: auto;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .code-block pre {
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            line-height: 1.5;
            color: #e2e8f0;
        }
        
        .keyword { color: #f472b6; }
        .class { color: #60a5fa; }
        .method { color: #34d399; }
        .string { color: #fbbf24; }
        .comment { color: #94a3b8; }
        .number { color: #a78bfa; }
        
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        
        footer {
            margin-top: 3rem;
            text-align: center;
            padding: 2rem;
            color: #94a3b8;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            
            .sidebar {
                position: static;
            }
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
            
            .header {
                padding: 2rem 1rem;
            }
            
            .main-content {
                padding: 1.5rem;
            }
            
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        
        .copy-button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 1rem;
            transition: background 0.3s ease;
        }
        
        .copy-button:hover {
            background: #1d4ed8;
        }
        
        .diagram {
            background: rgba(15, 23, 42, 0.8);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }