/* ==========================================================================
   Docs layout
   ========================================================================== */

.docs-shell {
    display: grid;
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 0;
    max-width: 1180px;
    margin: 0 auto;
    align-items: start;
}

/* ---- sidebar ------------------------------------------------------ */

.docs-sidebar {
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
    padding: 28px 18px 60px 28px;
    border-right: 1px solid var(--border-faint);
    font-size: 13.5px;
}

.docs-search {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 9px 10px 9px 32px;
    margin-bottom: 22px;
    position: relative;
}
.docs-search:focus { outline: none; border-color: var(--accent-dim); }

.docs-search-wrap { position: relative; margin-bottom: 22px; }
.docs-search-wrap svg {
    position: absolute;
    left: 10px; top: 50%;
    transform: translateY(-50%);
    width: 14px; height: 14px;
    color: var(--text-faint);
    pointer-events: none;
}
.docs-search-wrap .docs-search { margin-bottom: 0; }
.docs-search-hint {
    position: absolute;
    right: 8px; top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--text-faint);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1px 5px;
    pointer-events: none;
}

.docs-part {
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 22px 0 8px;
}
.docs-part:first-child { margin-top: 0; }

.docs-nav-list { list-style: none; margin: 0 0 4px; padding: 0; }
.docs-nav-list li { margin: 0; }
.docs-nav-list a {
    display: block;
    padding: 5px 10px;
    border-radius: 3px;
    color: var(--text-dim);
    border-left: 2px solid transparent;
}
.docs-nav-list a:hover {
    text-decoration: none;
    color: var(--text);
    background: var(--surface);
}
.docs-nav-list a.is-active {
    color: var(--accent-strong);
    background: rgba(255, 138, 61, 0.08);
    border-left-color: var(--accent);
}
.docs-nav-list mark {
    background: var(--accent);
    color: var(--accent-ink);
    border-radius: 2px;
    padding: 0 1px;
}

/* ---- content -------------------------------------------------------- */

.docs-content {
    min-width: 0;
    max-width: 760px;
    padding: 44px 56px 120px;
}

.docs-content > .docs-part-heading {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 4.2em 0 0.4em;
    padding-top: 1.6em;
    border-top: 1px solid var(--border-faint);
}
.docs-content > .docs-part-heading:first-child { margin-top: 0; border-top: none; padding-top: 0; }

.docs-content h1.doc-title {
    font-size: 34px;
    margin-bottom: 0.3em;
}
.docs-doc-sub {
    color: var(--text-dim);
    font-size: 16.5px;
    max-width: 640px;
    margin-bottom: 2.6em;
}

.docs-content h2 {
    font-size: 25px;
    padding-top: 0.4em;
    margin-top: 2.6em;
    scroll-margin-top: 84px;
}
.docs-content h2 .chapter-no {
    color: var(--accent);
    margin-right: 0.35em;
}
.docs-content h3 {
    font-size: 19px;
    margin-top: 2em;
    scroll-margin-top: 84px;
}
.docs-content h4 {
    font-size: 15.5px;
    color: var(--accent-strong);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 1.8em;
    scroll-margin-top: 84px;
}

.docs-content h2 .anchor-link,
.docs-content h3 .anchor-link {
    opacity: 0;
    margin-left: 8px;
    font-size: 0.75em;
    color: var(--text-faint);
    transition: opacity 0.1s ease;
}
.docs-content h2:hover .anchor-link,
.docs-content h3:hover .anchor-link { opacity: 1; }

.docs-content p code,
.docs-content li code,
.docs-content td code { word-break: break-word; }

.docs-content strong { color: var(--text); }

.docs-section-divider {
    border: none;
    border-top: 1px dashed var(--border);
    margin: 2.6em 0;
}

.docs-mobile-bar {
    display: none;
}

@media (max-width: 860px) {
    .docs-shell { display: block; }
    .docs-sidebar {
        position: fixed;
        inset: 64px 0 0 0;
        z-index: 90;
        width: 82vw;
        max-width: 320px;
        background: var(--bg);
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        height: calc(100vh - 64px);
    }
    .docs-sidebar.is-open { transform: translateX(0); box-shadow: 20px 0 40px rgba(0,0,0,0.4); }
    .docs-content { padding: 32px 20px 100px; }
    .docs-mobile-bar {
        display: flex;
        align-items: center;
        gap: 10px;
        position: sticky;
        top: 64px;
        z-index: 80;
        background: var(--bg);
        border-bottom: 1px solid var(--border-faint);
        padding: 10px 20px;
    }
    .docs-mobile-bar button {
        background: var(--surface);
        border: 1px solid var(--border);
        color: var(--text);
        font-family: var(--font-mono);
        font-size: 12.5px;
        border-radius: 3px;
        padding: 7px 12px;
    }
    .docs-scrim {
        display: none;
        position: fixed; inset: 64px 0 0 0;
        background: rgba(0,0,0,0.5);
        z-index: 85;
    }
    .docs-scrim.is-open { display: block; }
}

/* prev/next pager */
.docs-pager {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 4em;
    padding-top: 2em;
    border-top: 1px solid var(--border-faint);
}
.docs-pager a {
    flex: 1;
    max-width: 48%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text-dim);
}
.docs-pager a:hover { border-color: var(--accent-dim); text-decoration: none; }
.docs-pager .pager-dir {
    display: block;
    font-family: var(--font-mono);
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    margin-bottom: 4px;
}
.docs-pager .pager-next { text-align: right; margin-left: auto; }
.docs-pager-title { color: var(--text); font-weight: 600; }