:root {
    --bg: #faf7f2;
    --surface: #ffffff;
    --surface-alt: #f3ede3;
    --border: #e6ddcc;
    --text: #2b2620;
    --text-muted: #6b6155;
    --accent: #b45309;
    --accent-strong: #92400e;
    --accent-soft: #fdecc8;
    --admin: #9f1239;
    --admin-soft: #fde3ea;
    --info: #1d6fa5;
    --info-soft: #dcecf7;
    --warn: #a15c00;
    --warn-soft: #fbe6c2;
    --ok: #2f7a3d;
    --ok-soft: #e0f2e2;
    --radius: 14px;
    --shadow: 0 8px 24px rgba(43, 38, 32, 0.08);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1c1814;
        --surface: #262019;
        --surface-alt: #2f2820;
        --border: #453a2c;
        --text: #f1ebe0;
        --text-muted: #b9ac97;
        --accent: #e8a33d;
        --accent-strong: #f3bd6c;
        --accent-soft: #3a2e17;
        --admin: #f18aa8;
        --admin-soft: #3a1c26;
        --info: #7cc0ef;
        --info-soft: #17293a;
        --warn: #f0b95c;
        --warn-soft: #3a2c11;
        --ok: #8fd39c;
        --ok-soft: #14281a;
        --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand-emoji { font-size: 22px; }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 38px;
    height: 34px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    cursor: pointer;
}
.nav-toggle span {
    display: block;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
}

.layout {
    display: flex;
    align-items: flex-start;
    max-width: 1280px;
    margin: 0 auto;
}

.sidebar {
    position: sticky;
    top: 57px;
    width: 300px;
    flex-shrink: 0;
    height: calc(100vh - 57px);
    overflow-y: auto;
    padding: 18px 14px 40px;
    border-right: 1px solid var(--border);
}

.nav-search input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
    margin-bottom: 16px;
}

.nav-group { margin-bottom: 18px; }
.nav-group-title {
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    padding: 0 8px 6px;
}
.nav-group-admin .nav-group-title { color: var(--admin); }

.sidebar ul { list-style: none; margin: 0; padding: 0; }
.nav-item a {
    display: block;
    padding: 8px 10px;
    border-radius: 10px;
    color: var(--text);
    font-size: 14.5px;
    font-weight: 600;
}
.nav-item a:hover { background: var(--surface-alt); text-decoration: none; }
.nav-item.active a {
    background: var(--accent-soft);
    color: var(--accent-strong);
}
.nav-group-admin .nav-item.active a {
    background: var(--admin-soft);
    color: var(--admin);
}
.nav-empty { padding: 8px; color: var(--text-muted); font-size: 14px; }

.content-wrap {
    flex: 1;
    min-width: 0;
    padding: 32px 40px 60px;
}

.content { max-width: 780px; }

.breadcrumb {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
}
.breadcrumb.admin { color: var(--admin); }

.content h1 {
    font-size: 30px;
    font-weight: 900;
    margin: 0 0 6px;
    letter-spacing: -0.02em;
}
.content .lede {
    font-size: 17px;
    color: var(--text-muted);
    margin: 0 0 28px;
}
.content h2 {
    font-size: 21px;
    font-weight: 800;
    margin: 34px 0 12px;
    padding-top: 6px;
    border-top: 1px solid var(--border);
}
.content h2:first-of-type { border-top: none; padding-top: 0; }
.content h3 {
    font-size: 17px;
    font-weight: 800;
    margin: 22px 0 8px;
}
.content p { margin: 0 0 14px; }
.content ul, .content ol { margin: 0 0 14px; padding-left: 22px; }
.content li { margin-bottom: 6px; }
.content strong { color: var(--text); }
.content code {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1px 6px;
    font-size: 13px;
    font-family: "Cascadia Code", Consolas, monospace;
}

.content table {
    width: 100%;
    border-collapse: collapse;
    margin: 4px 0 20px;
    font-size: 14.5px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.content th, .content td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.content th {
    background: var(--surface-alt);
    font-weight: 800;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--text-muted);
}
.content tr:last-child td { border-bottom: none; }

.callout {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius);
    margin: 0 0 20px;
    border: 1px solid var(--border);
}
.callout .callout-icon { font-size: 20px; line-height: 1.4; }
.callout p:last-child { margin-bottom: 0; }
.callout-info { background: var(--info-soft); border-color: color-mix(in srgb, var(--info) 35%, var(--border)); }
.callout-warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 35%, var(--border)); }
.callout-tip  { background: var(--ok-soft);   border-color: color-mix(in srgb, var(--ok) 35%, var(--border)); }
.callout-admin{ background: var(--admin-soft);border-color: color-mix(in srgb, var(--admin) 35%, var(--border)); }

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
}
.badge-on  { background: var(--ok-soft); color: var(--ok); }
.badge-off { background: var(--surface-alt); color: var(--text-muted); }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px 20px;
    margin-bottom: 20px;
}

.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    max-width: 780px;
    margin-top: 36px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    font-weight: 700;
}

.page-footer {
    max-width: 780px;
    margin-top: 40px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
}

@media (max-width: 900px) {
    .nav-toggle { display: flex; }
    .layout { position: relative; }
    .sidebar {
        position: fixed;
        top: 57px;
        left: 0;
        z-index: 15;
        width: 82vw;
        max-width: 320px;
        background: var(--bg);
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        box-shadow: var(--shadow);
    }
    .sidebar.open { transform: translateX(0); }
    .content-wrap { padding: 24px 18px 50px; }
}