:root {
    --bg: #ffffff;
    --fg: #1f2328;
    --muted: #656d76;
    --border: #d0d7de;
    --accent: #0969da;
    --kbd-bg: #f6f8fa;
    --kbd-border: #afb8c1;
    --row-hover: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d1117;
        --fg: #e6edf3;
        --muted: #8b949e;
        --border: #30363d;
        --accent: #4493f8;
        --kbd-bg: #161b22;
        --kbd-border: #3d444d;
        --row-hover: #161b22;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem 4rem;
}

.page-head h1 {
    margin: 0 0 0.25rem;
    font-size: 1.7rem;
}

.intro {
    margin: 0 0 1.5rem;
    color: var(--muted);
}

/* Controls: search + platform filters, sticky on scroll */
.controls {
    position: sticky;
    top: 0;
    background: var(--bg);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    z-index: 1;
}

.search {
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-size: 1rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.search:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.6rem;
}

.filter {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    min-height: 40px;
}

.filter.is-active {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}

.empty {
    padding: 2rem 0;
    text-align: center;
    color: var(--muted);
}

.kb-section {
    margin-top: 2rem;
}

.kb-section h2 {
    font-size: 1.15rem;
    margin: 0 0 0.5rem;
}

.kb-table {
    width: 100%;
    border-collapse: collapse;
}

.kb-table th,
.kb-table td {
    text-align: left;
    padding: 0.55rem 0.6rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.kb-table th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--muted);
}

.kb-table tbody tr:hover {
    background: var(--row-hover);
}

.c-keys {
    white-space: nowrap;
}

.c-command code {
    color: var(--muted);
    font-size: 0.85rem;
}

kbd {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    font: 0.85rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    color: var(--fg);
    background: var(--kbd-bg);
    border: 1px solid var(--kbd-border);
    border-radius: 6px;
    box-shadow: inset 0 -1px 0 var(--kbd-border);
}

/* Mobile: turn each table row into a stacked card */
@media (max-width: 640px) {
    .kb-table,
    .kb-table tbody,
    .kb-table tr,
    .kb-table td {
        display: block;
        width: 100%;
    }

    .kb-table thead {
        display: none;
    }

    .kb-table tr {
        margin-bottom: 0.75rem;
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 0.5rem 0.75rem;
    }

    .kb-table td {
        border: 0;
        padding: 0.2rem 0;
    }

    .c-name {
        font-weight: 600;
    }
}

/* ---------------------------------------------------------------------------
   Site chrome: header, nav and the site-wide search box
   --------------------------------------------------------------------------- */

.site-head {
    position: sticky;
    top: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 1rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--fg);
    text-decoration: none;
}

.site-nav {
    display: flex;
    gap: 0.9rem;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
}

.site-nav a:hover {
    color: var(--fg);
}

.site-nav a.is-current {
    color: var(--fg);
    font-weight: 600;
}

.site-search {
    position: relative;
    margin-left: auto;
    width: min(24rem, 45vw);
}

/* Hero variant on the start page: full width, in the flow, not in the header. */
.site-search.is-hero {
    margin: 1.5rem auto 1.25rem;
    width: 100%;
    max-width: 34rem;
}

.site-search.is-hero .search {
    padding: 0.8rem 1rem;
    font-size: 1.05rem;
}

.search-results {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    right: 0;
    max-height: min(60vh, 28rem);
    overflow-y: auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgb(0 0 0 / 18%);
    z-index: 10;
    text-align: left;
}

.search-group {
    margin: 0;
    padding: 0.45rem 0.75rem 0.25rem;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--muted);
}

.search-hit {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.45rem 0.75rem;
    color: var(--fg);
    text-decoration: none;
}

.search-hit:hover,
.search-hit.is-active {
    background: var(--row-hover);
}

.search-hit-title {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-hit .search-hit-sub {
    flex: 0 0 auto;
    color: var(--muted);
    font-size: 0.85rem;
}

.search-hit-help .search-hit-sub {
    flex: 1 1 60%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-empty {
    margin: 0;
    padding: 0.75rem;
    color: var(--muted);
}

/* ---------------------------------------------------------------------------
   Start page
   --------------------------------------------------------------------------- */

.hero {
    text-align: center;
    padding: 1.5rem 0 2rem;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    margin: 0 0 0.4rem;
    font-size: 2.1rem;
}

.tagline {
    margin: 0 0 0.75rem;
    font-size: 1.1rem;
}

.hero .intro {
    max-width: 40rem;
    margin: 0 auto;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem;
}

.button {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--accent);
}

.button-primary {
    background: var(--accent);
    color: #fff;
}

.button-ghost {
    color: var(--accent);
    border-color: var(--border);
}

.button:hover {
    filter: brightness(1.08);
}

.note {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.topics h2 {
    margin: 2rem 0 1rem;
    font-size: 1.3rem;
}

.cards {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
}

.card {
    display: block;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--fg);
    text-decoration: none;
}

.card:hover {
    background: var(--row-hover);
    border-color: var(--accent);
}

.card h3 {
    margin: 0 0 0.35rem;
    font-size: 1.05rem;
}

.card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

/* ---------------------------------------------------------------------------
   Help article
   --------------------------------------------------------------------------- */

.breadcrumb {
    margin: 0 0 0.35rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--muted);
}

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

.subpages {
    margin: 0 0 2rem;
}

.subpages h2 {
    margin: 0 0 0.6rem;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--muted);
}

.toc {
    margin: 0 0 1.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.toc h2 {
    margin: 0 0 0.4rem;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--muted);
}

.toc ul {
    margin: 0;
    padding-left: 1.1rem;
}

.toc li {
    margin: 0.15rem 0;
}

.toc .toc-h3 {
    margin-left: 1rem;
    list-style: none;
}

.toc a,
.prose a,
.back a {
    color: var(--accent);
}

.prose {
    max-width: 46rem;
}

.prose h2 {
    margin: 2rem 0 0.6rem;
    font-size: 1.35rem;
    scroll-margin-top: 4rem;
}

.prose h3 {
    margin: 1.5rem 0 0.5rem;
    font-size: 1.1rem;
    scroll-margin-top: 4rem;
}

.prose p,
.prose li {
    margin: 0.6rem 0;
}

.prose code {
    padding: 0.1rem 0.35rem;
    background: var(--kbd-bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 0.9em;
}

.prose pre {
    overflow-x: auto;
    padding: 0.85rem 1rem;
    background: var(--kbd-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.prose pre code {
    padding: 0;
    background: none;
    border: 0;
}

.prose table {
    display: block;
    overflow-x: auto;
    width: 100%;
    border-collapse: collapse;
}

.prose th,
.prose td {
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.prose th {
    background: var(--kbd-bg);
}

.back {
    margin-top: 2.5rem;
}

/* The row the site-wide search linked to, so it stands out after the jump. */
.kb-row.is-targeted {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

/* The keybindings controls bar sits below the sticky site header. */
.controls {
    top: 3.1rem;
    z-index: 2;
}

@media (max-width: 640px) {
    .site-head {
        flex-wrap: wrap;
        gap: 0.5rem 1rem;
    }

    .site-search {
        order: 3;
        width: 100%;
        margin-left: 0;
    }

    .controls {
        top: 6.5rem;
    }

    .hero h1 {
        font-size: 1.6rem;
    }
}