:root {
    /* Admin palette — slate + blue (matches AdminApp theme.ts) */
    --bg: #0f172a;           /* slate-900 */
    --bg-elev: #0f172a;
    --panel: #1e293b;        /* slate-800 */
    --border: #334155;       /* slate-700 */
    --text: #f1f5f9;         /* slate-100 */
    --muted: #94a3b8;        /* slate-400 */
    --faint: #64748b;        /* slate-500 */
    --accent: #3b82f6;       /* blue-500 */
    --accent-2: #2563eb;     /* blue-600 */
    --accent-soft: rgba(59,130,246,.15);
    --accent-border: rgba(59,130,246,.4);
    --code-bg: rgba(255,255,255,.06);
    --code-border: #334155;
    --shadow: 0 4px 16px rgba(0,0,0,.4);
    --radius: 12px;
    --radius-sm: 8px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
}

/* Topbar */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(15,23,42,.85);
    border-bottom: 1px solid var(--border);
}

.topbar__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.brand {
    color: var(--text);
    text-decoration: none;
    font-weight: 650;
    letter-spacing: .2px;
    font-size: 15px;
}

    .brand:hover {
        color: white;
    }

.topbar__nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 7px 12px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 14px;
    transition: color .15s, background .15s, border-color .15s;
}

    .topbar__nav a:hover {
        color: var(--text);
        border-color: var(--border);
        background: rgba(255,255,255,.04);
    }

    .topbar__nav a.active {
        color: #60a5fa; /* blue-400 */
        background: var(--accent-soft);
        border-color: var(--accent-border);
    }

/* Layout */
.page {
    padding: 24px 0 70px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 18px;
}

.markdown {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 32px;
}

    /* Typography */
    .markdown h1, .markdown h2, .markdown h3, .markdown h4 {
        line-height: 1.2;
        margin: 24px 0 12px;
        letter-spacing: -0.01em;
    }

    .markdown h1 {
        font-size: 32px;
        margin-top: 4px;
    }

    .markdown h2 {
        font-size: 22px;
        padding-top: 16px;
        border-top: 1px solid var(--border);
        color: var(--text);
    }

    .markdown h3 {
        font-size: 17px;
        color: var(--text);
    }

    .markdown p, .markdown li {
        color: var(--text);
        line-height: 1.65;
    }

    .markdown p {
        margin: 10px 0;
    }

    .markdown ul, .markdown ol {
        padding-left: 22px;
    }

    .markdown li {
        margin: 6px 0;
    }

    .markdown a {
        color: #60a5fa; /* blue-400 */
        text-decoration: none;
        border-bottom: 1px solid rgba(96,165,250,.35);
        transition: color .15s, border-color .15s;
    }

        .markdown a:hover {
            color: #93c5fd; /* blue-300 */
            border-bottom-color: rgba(147,197,253,.55);
        }

    /* Blockquote / callout */
    .markdown blockquote {
        margin: 14px 0;
        padding: 12px 16px;
        border-left: 3px solid var(--accent);
        background: var(--accent-soft);
        border-radius: 0 8px 8px 0;
        color: var(--muted);
    }

        .markdown blockquote p {
            margin: 0;
            color: var(--muted);
        }

    /* Code */
    .markdown code {
        font-family: var(--mono);
        font-size: .875em;
        background: var(--code-bg);
        border: 1px solid var(--code-border);
        padding: 2px 6px;
        border-radius: 6px;
        color: var(--text);
    }

    .markdown pre {
        background: #0f172a;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 14px 16px;
        overflow: auto;
    }

        .markdown pre code {
            background: transparent;
            border: 0;
            padding: 0;
            border-radius: 0;
            color: var(--text);
        }

    /* Tables */
    .markdown table {
        width: 100%;
        border-collapse: collapse;
        margin: 14px 0;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border);
        overflow: hidden;
    }

    .markdown th, .markdown td {
        padding: 10px 14px;
        border-bottom: 1px solid var(--border);
        vertical-align: top;
        font-size: 14px;
    }

    .markdown th {
        text-align: left;
        color: var(--muted);
        background: rgba(255,255,255,.03);
        font-size: 12px;
        text-transform: uppercase;
        letter-spacing: .06em;
    }

    .markdown tr:last-child td {
        border-bottom: 0;
    }

    .markdown tr:hover td {
        background: rgba(255,255,255,.025);
    }

    /* Horizontal rule */
    .markdown hr {
        border: 0;
        border-top: 1px solid var(--border);
        margin: 24px 0;
    }

/* Small screens */
@media (max-width: 640px) {
    .markdown {
        padding: 18px;
    }

        .markdown h1 {
            font-size: 26px;
        }
}

/* Layout with sidebar */
.layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 64px;
    align-self: start;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
}

.sidebar__inner {
    padding: 12px;
}

.sidebar__title {
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--faint);
    margin: 4px 8px 10px;
    font-weight: 600;
}

.sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    transition: color .15s, background .15s;
}

    .sidebar__link:hover {
        color: var(--text);
        background: rgba(255,255,255,.04);
    }

    .sidebar__link.active {
        color: #60a5fa; /* blue-400 */
        background: var(--accent-soft);
    }

.sidebar__sectionTitle {
    font-weight: 600;
}

.sidebar__children {
    margin-left: 6px;
    padding-left: 10px;
    border-left: 1px solid var(--border);
    display: none;
    padding-top: 2px;
}

.sidebar__section.open .sidebar__children {
    display: block;
}

.sidebar__child {
    margin-top: 2px;
    font-size: 13px;
    padding: 7px 10px;
}

@media (max-width: 980px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        top: auto;
    }
}