// Shared navigation component - loaded automatically by other pages
if (!document.querySelector('.logo')) {
    document.head.innerHTML += `
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Orbitron:wght@700;900&display=swap" rel="stylesheet">
<style>
    :root {
        --bg-primary: #0a0e14;
        --bg-secondary: #151b24;
        --bg-card: #1a2332;
        --border-color: #2a3544;
        --text-primary: #e6edf3;
        --text-secondary: #8b949e;
        --text-muted: #6e7681;
        --accent-cyan: #00d9ff;
        --accent-electric: #00ffff;
        --accent-red: #ff4757;
        --accent-green: #2ecc71;
        --accent-yellow: #ffd93d;
        --glow-cyan: 0 0 20px rgba(0, 217, 255, 0.3);
        --glow-red: 0 0 20px rgba(255, 71, 87, 0.3);
        --glow-green: 0 0 20px rgba(46, 204, 113, 0.3);
    }

    [data-theme="light"] {
        --bg-primary: #f5f7fa;
        --bg-secondary: #ffffff;
        --bg-card: #ffffff;
        --border-color: #e1e4e8;
        --text-primary: #24292e;
        --text-secondary: #586069;
        --text-muted: #6a737d;
        --accent-cyan: #0366d6;
        --accent-electric: #005cc5;
        --accent-red: #d73a49;
        --accent-green: #28a745;
        --accent-yellow: #ffd33d;
        --glow-cyan: 0 0 10px rgba(3, 102, 214, 0.2);
        --glow-red: 0 0 10px rgba(215, 58, 73, 0.2);
        --glow-green: 0 0 10px rgba(40, 167, 69, 0.2);
    }

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

    body {
        background: var(--bg-primary);
        color: var(--text-primary);
        font-family: 'JetBrains Mono', monospace;
        font-size: 14px;
        line-height: 1.6;
        min-height: 100vh;
        overflow-x: hidden;
        display: flex;
        flex-direction: column;
    }

    /* Scan line effect */
    body::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0.05) 0px,
            rgba(0, 0, 0, 0.05) 1px,
            transparent 1px,
            transparent 2px
        );
        pointer-events: none;
        z-index: 9999;
        opacity: 0.3;
    }

    /* Animated gradient background */
    body::after {
        content: '';
        position: fixed;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(
            circle at 50% 50%,
            rgba(0, 217, 255, 0.03) 0%,
            transparent 50%
        );
        animation: rotateGradient 20s linear infinite;
        pointer-events: none;
        z-index: 0;
    }

    @keyframes rotateGradient {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 24px;
        position: relative;
        z-index: 1;
    }

    /* Header */
    header {
        background: var(--bg-secondary);
        border-bottom: 2px solid var(--accent-cyan);
        box-shadow: var(--glow-cyan);
        position: sticky;
        top: 0;
        z-index: 100;
        backdrop-filter: blur(10px);
    }

    nav {
        display: flex;
        align-items: center;
        gap: 32px;
        padding: 20px 0;
    }

    .logo {
        font-family: 'Orbitron', sans-serif;
        font-weight: 900;
        font-size: 28px;
        color: var(--accent-cyan);
        text-shadow: var(--glow-cyan);
        letter-spacing: 2px;
        text-decoration: none;
        position: relative;
        animation: glitch 3s infinite;
    }

    @keyframes glitch {
        0%, 90%, 100% { transform: translate(0); }
        91% { transform: translate(-2px, 1px); }
        92% { transform: translate(2px, -1px); }
        93% { transform: translate(-1px, 2px); }
    }

    .nav-links {
        display: flex;
        gap: 24px;
        align-items: center;
        flex: 1;
    }

    .nav-link {
        color: var(--text-secondary);
        text-decoration: none;
        font-weight: 500;
        text-transform: uppercase;
        font-size: 12px;
        letter-spacing: 1px;
        padding: 8px 16px;
        border: 1px solid transparent;
        border-radius: 4px;
        position: relative;
        overflow: hidden;
    }

    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    }

    .nav-link:hover::before {
        left: 100%;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--accent-cyan);
        border-color: var(--accent-cyan);
        box-shadow: var(--glow-cyan);
    }

    .docs-link {
        font-size: 11px;
        padding: 4px 10px;
        opacity: 0.6;
        margin-left: auto;
    }

    .docs-link:hover {
        opacity: 1;
    }

    /* Main content */
    main {
        padding: 40px 0;
        flex: 1 1 auto;
        display: flex;
        flex-direction: column;
    }

    /* Shared form styles */
    form {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    input[type="text"], input[type="email"], input[type="password"], select {
        padding: 10px 16px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        font-size: 14px;
        background: var(--bg-card);
        color: var(--text-primary);
        font-family: 'JetBrains Mono', monospace;
        transition: all 0.3s;
    }

    input[type="text"]:focus,
    input[type="email"]:focus,
    input[type="password"]:focus,
    select:focus {
        outline: none;
        border-color: var(--accent-cyan);
        box-shadow: var(--glow-cyan);
    }

    button {
        padding: 10px 20px;
        border: 1px solid var(--accent-cyan);
        border-radius: 4px;
        cursor: pointer;
        font-size: 14px;
        background: var(--bg-card);
        color: var(--accent-cyan);
        font-family: 'JetBrains Mono', monospace;
        font-weight: 500;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    button:hover {
        background: var(--accent-cyan);
        color: var(--bg-primary);
        box-shadow: var(--glow-cyan);
    }

    /* Checkbox */
    label {
        display: flex;
        gap: 8px;
        align-items: center;
        cursor: pointer;
        color: var(--text-secondary);
    }

    input[type="checkbox"] {
        appearance: none;
        width: 18px;
        height: 18px;
        border: 2px solid var(--border-color);
        border-radius: 3px;
        cursor: pointer;
        position: relative;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    input[type="checkbox"]:checked {
        background: var(--accent-cyan);
        border-color: var(--accent-cyan);
        box-shadow: var(--glow-cyan);
    }

    input[type="checkbox"]:checked::after {
        content: '✓';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        color: var(--bg-primary);
        font-size: 12px;
        font-weight: 700;
    }

    /* Table */
    table {
        width: 100%;
        background: var(--bg-card);
        border-collapse: collapse;
        margin: 0 auto;
        overflow: hidden;
        border-radius: 8px;
        border: 1px solid var(--border-color);
    }

    th, td {
        padding: 12px 15px;
        text-align: left;
        border-bottom: 1px solid var(--border-color);
    }

    th {
        background: var(--bg-secondary);
        color: var(--accent-cyan);
        font-weight: 700;
        text-transform: uppercase;
        font-size: 11px;
        letter-spacing: 1px;
    }

    tr:nth-child(even) {
        background: rgba(255, 255, 255, 0.02);
    }

    tr:hover {
        background: rgba(0, 217, 255, 0.05);
        transition: background-color 0.3s ease;
    }

    /* Links */
    a {
        color: var(--accent-cyan);
        text-decoration: none;
        position: relative;
        transition: color 0.3s;
    }

    a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 1px;
        background: var(--accent-cyan);
        transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    a:hover {
        color: var(--accent-electric);
    }

    a:hover::after {
        width: 100%;
    }

    /* Responsive */
    @media (max-width: 768px) {
        nav {
            gap: 16px;
            padding: 12px 0;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 20px;
            flex-shrink: 0;
        }

        .nav-links {
            order: 3;
            flex: 1 1 100%;
            gap: 8px;
            overflow-x: auto;
            overflow-y: hidden;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-bottom: 4px;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            flex-shrink: 0;
            font-size: 11px;
            padding: 6px 12px;
        }

        .docs-link {
            order: 2;
            margin-left: auto;
            flex-shrink: 0;
        }

        .theme-toggle {
            order: 1;
            flex-shrink: 0;
        }

        table, thead, tbody, th, td, tr {
            display: block;
        }

        th {
            display: none;
        }

        tr {
            margin-bottom: 10px;
            border-radius: 4px;
        }
    }

    /* Theme toggle */
    .theme-toggle {
        width: 48px;
        height: 48px;
        border: 1px solid var(--border-color);
        border-radius: 6px;
        background: var(--bg-card);
        color: var(--accent-cyan);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        margin-left: auto;
    }

    .theme-toggle:hover {
        background: var(--accent-cyan);
        color: var(--bg-primary);
        box-shadow: var(--glow-cyan);
        transform: rotate(180deg);
    }
</style>
`;

    document.body.innerHTML = `
<header>
    <div class="container">
        <nav>
            <span class="logo">GO2RTC</span>
            <div class="nav-links">
                <a href="index.html" class="nav-link">Streams</a>
                <a href="add.html" class="nav-link">Add Stream</a>
                <a href="config.html" class="nav-link">Config</a>
                <a href="log.html" class="nav-link">Logs</a>
                <a href="net.html" class="nav-link">Network</a>
            </div>
            <a href="https://github.com/AlexxIT/go2rtc" target="_blank" class="nav-link docs-link">docs</a>
            <button class="theme-toggle" id="theme-toggle" aria-label="Toggle theme">
                <span class="theme-icon">🌙</span>
            </button>
        </nav>
    </div>
</header>
` + document.body.innerHTML;

    // Mark active nav link
    const currentPage = location.pathname.split('/').pop() || 'index.html';
    document.querySelectorAll('.nav-links .nav-link').forEach(link => {
        if (link.getAttribute('href') === currentPage) {
            link.classList.add('active');
        }
    });

    // Theme management functions
    function initTheme() {
        const savedTheme = localStorage.getItem('theme');
        const systemPrefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
        const theme = savedTheme || (systemPrefersDark ? 'dark' : 'light');

        setTheme(theme);

        // Listen for system theme changes
        window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', (e) => {
            if (!localStorage.getItem('theme')) {
                setTheme(e.matches ? 'dark' : 'light');
            }
        });
    }

    function setTheme(theme) {
        const html = document.documentElement;
        const themeIcon = document.querySelector('.theme-icon');

        if (theme === 'light') {
            html.setAttribute('data-theme', 'light');
            if (themeIcon) themeIcon.textContent = '☀️';
        } else {
            html.removeAttribute('data-theme');
            if (themeIcon) themeIcon.textContent = '🌙';
        }
    }

    function toggleTheme() {
        const html = document.documentElement;
        const currentTheme = html.getAttribute('data-theme') === 'light' ? 'light' : 'dark';
        const newTheme = currentTheme === 'light' ? 'dark' : 'light';

        setTheme(newTheme);
        localStorage.setItem('theme', newTheme);
        window.dispatchEvent(new Event('themeChanged'));
    }

    // Initialize theme
    initTheme();

    // Theme toggle button handler
    document.getElementById('theme-toggle')?.addEventListener('click', toggleTheme);
}
