* {
    box-sizing: border-box;
}

:root {
    --line: #e2e8f0;
    --surface: #ffffff;
    --soft: #f8fafc;
    --text: #18212f;
    --muted: #64748b;
    --accent: #1473c9;
    --header-h: 68px;
    --footer-h: 38px;
}

html,
body {
    height: 100%;
    margin: 0;
    background: var(--surface);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    overflow: hidden;
}

/* Header */

.marswiki-header {
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: 260px minmax(240px, 560px) 1fr;
    align-items: center;
    gap: 24px;
    height: var(--header-h);
    padding: 0 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
}

.marswiki-header__brand a {
    color: var(--text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
}

.marswiki-header__search input {
    width: 100%;
    padding: 10px 13px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--soft);
    font: inherit;
}

.marswiki-header__actions {
    justify-self: end;
}

.marswiki-header__actions button {
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #ffffff;
    color: #334155;
    cursor: pointer;
    font: inherit;
}

/* Three-panel application shell */

.marswiki-app-shell {
    display: grid;
    grid-template-columns: 270px minmax(0, 1fr) 290px;
    height: calc(100vh - var(--header-h) - var(--footer-h));
    min-height: 0;
    overflow: hidden;
}

.marswiki-left-panel,
.marswiki-right-panel {
    min-height: 0;
    padding: 22px 18px;
    overflow-y: auto;
    background: var(--soft);
}

.marswiki-left-panel {
    border-right: 1px solid var(--line);
}

.marswiki-right-panel {
    background: #ffffff;
    border-left: 1px solid var(--line);
}

.marswiki-main-panel {
    min-width: 0;
    min-height: 0;
    padding: 30px 48px 64px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Left documentation navigation */

.marswiki-panel-label {
    margin-bottom: 14px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.marswiki-tree-home,
.marswiki-tree-link {
    display: block;
    padding: 8px 9px;
    border-radius: 5px;
    color: #334155;
    font-size: 14px;
    text-decoration: none;
}

.marswiki-tree-home {
    margin-bottom: 10px;
    font-weight: 700;
}

.marswiki-tree-link:hover,
.marswiki-tree-link.is-active {
    background: #e8f2fb;
    color: #0f5f9f;
}

.marswiki-tree-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.marswiki-tree-list li {
    margin: 2px 0;
}

/* Sticky breadcrumb + page search */

.marswiki-breadcrumbs {
    position: sticky;
    top: -30px;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 52px;
    margin: -30px -48px 22px;
    padding: 0 48px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
}

.marswiki-breadcrumbs > a,
.marswiki-breadcrumbs > span {
    flex: 0 0 auto;
}

.marswiki-breadcrumbs a {
    color: var(--muted);
    text-decoration: none;
}

.marswiki-page-search {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    margin-left: auto;
}

.marswiki-page-search__field {
    width: 240px;
    min-width: 150px;
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 6px;
    outline: 0;
    background: var(--soft);
    color: var(--text);
    font: inherit;
    font-size: 13px;
    transition: width 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.marswiki-page-search__field:focus {
    width: 300px;
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(20, 115, 201, 0.14);
}

.marswiki-page-search__clear {
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #ffffff;
    color: #334155;
    cursor: pointer;
    font: inherit;
    font-size: 12px;
}

.marswiki-page-search__clear[hidden] {
    display: none;
}

.marswiki-page-search__status {
    min-width: 120px;
    color: var(--muted);
    font-size: 12px;
    white-space: nowrap;
}

.marswiki-page-search mark {
    padding: 0 0.08em;
    border-radius: 2px;
    background: #fff1a8;
    color: inherit;
}

.marswiki-page-search mark.marswiki-page-search__current {
    background: #f9bc4f;
}

/* Article */

.marswiki-article {
    display: block;
    width: 100%;
    max-width: none;
    margin: 0;
}

.marswiki-article__content {
    width: 100%;
    max-width: none;
    color: #334155;
    font-size: 16px;
    line-height: 1.75;
}

.marswiki-article h1 {
    margin: 0 0 24px;
    font-size: 34px;
    line-height: 1.18;
    letter-spacing: -0.025em;
}

.marswiki-article__content h2,
.marswiki-article__content h3,
.marswiki-article__content h4 {
    color: var(--text);
    line-height: 1.28;
    scroll-margin-top: 24px;
}

.marswiki-article__content h2 {
    margin: 42px 0 12px;
    font-size: 25px;
}

.marswiki-article__content h3 {
    margin: 30px 0 10px;
    font-size: 20px;
}

.marswiki-article__content h4 {
    margin: 24px 0 8px;
    font-size: 17px;
}

.marswiki-article__content p {
    margin: 0 0 17px;
}

.marswiki-article__content a {
    color: #0a66b3;
}

.marswiki-article__content table {
    width: 100%;
    margin: 22px 0;
    border-collapse: collapse;
    font-size: 14px;
}

.marswiki-article__content th,
.marswiki-article__content td {
    padding: 10px 11px;
    border: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.marswiki-article__content th {
    background: var(--soft);
    color: var(--text);
}

/* Full-width documentation screenshots */

.marswiki-article__content .wp-block-image,
.marswiki-article__content figure.wp-block-image,
.marswiki-article__content figure.wp-block-image.size-large,
.marswiki-article__content figure.wp-block-image.size-full {
    display: block;
    width: 100% !important;
    max-width: none !important;
    margin: 24px 0;
}

.marswiki-article__content .wp-block-image img,
.marswiki-article__content figure.wp-block-image img {
    display: block;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    margin: 0;
}

/* Right table of contents */

.marswiki-toc ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.marswiki-toc li {
    margin: 4px 0;
}

.marswiki-toc a {
    display: block;
    padding: 6px 4px;
    border-radius: 4px;
    color: #475569;
    font-size: 13px;
    line-height: 1.4;
    text-decoration: none;
}

.marswiki-toc a:hover {
    background: #f1f5f9;
    color: #0f5f9f;
}

.marswiki-toc__level-3 {
    padding-left: 12px;
}

.marswiki-toc__level-4 {
    padding-left: 24px;
}

.marswiki-empty {
    color: var(--muted);
    font-size: 13px;
}

/* Footer */

.marswiki-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--footer-h);
    padding: 0 20px;
    border-top: 1px solid var(--line);
    background: #ffffff;
    color: var(--muted);
    font-size: 12px;
}

.marswiki-fallback {
    max-width: 900px;
    margin: 60px auto;
    padding: 0 24px;
}

/* Tablet */

@media (max-width: 1000px) {
    .marswiki-app-shell {
        grid-template-columns: 230px minmax(0, 1fr);
    }

    .marswiki-right-panel {
        display: none;
    }

    .marswiki-main-panel {
        padding: 28px 32px;
    }

    .marswiki-breadcrumbs {
        top: -28px;
        margin: -28px -32px 22px;
        padding: 0 32px;
    }

    .marswiki-page-search__field {
        width: 190px;
    }

    .marswiki-page-search__field:focus {
        width: 230px;
    }

    .marswiki-page-search__status {
        display: none;
    }
}

/* Mobile */

@media (max-width: 720px) {
    body {
        overflow: auto;
    }

    .marswiki-header {
        position: sticky;
        top: 0;
        grid-template-columns: 1fr auto;
        min-height: 60px;
        height: auto;
        padding: 10px 14px;
    }

    .marswiki-header__search {
        display: none;
    }

    .marswiki-app-shell {
        display: block;
        min-height: calc(100vh - var(--footer-h));
        height: auto;
        overflow: visible;
    }

    .marswiki-left-panel {
        overflow: visible;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .marswiki-main-panel {
        padding: 24px 18px 42px;
        overflow: visible;
    }

    .marswiki-breadcrumbs {
        top: -24px;
        flex-wrap: wrap;
        min-height: 52px;
        margin: -24px -18px 20px;
        padding: 8px 18px;
    }

    .marswiki-page-search {
        flex: 1 0 100%;
        margin: 2px 0 0;
    }

    .marswiki-page-search__field,
    .marswiki-page-search__field:focus {
        width: 100%;
    }

    .marswiki-page-search__status {
        display: none;
    }

    .marswiki-footer {
        position: static;
    }

    .marswiki-article h1 {
        font-size: 29px;
    }
}

/* Desktop panel collapse arrows */

@media (min-width: 1001px) {
    .marswiki-app-shell {
        --marswiki-left-expanded: 270px;
        --marswiki-left-collapsed: 46px;
        --marswiki-right-expanded: 290px;
        --marswiki-right-collapsed: 46px;

        grid-template-columns:
            var(--marswiki-left-expanded)
            minmax(0, 1fr)
            var(--marswiki-right-expanded);

        transition: grid-template-columns 180ms ease;
    }

    .marswiki-app-shell:has(.marswiki-left-panel.is-collapsed) {
        grid-template-columns:
            var(--marswiki-left-collapsed)
            minmax(0, 1fr)
            var(--marswiki-right-expanded);
    }

    .marswiki-app-shell:has(.marswiki-right-panel.is-collapsed) {
        grid-template-columns:
            var(--marswiki-left-expanded)
            minmax(0, 1fr)
            var(--marswiki-right-collapsed);
    }

    .marswiki-app-shell:has(.marswiki-left-panel.is-collapsed):has(.marswiki-right-panel.is-collapsed) {
        grid-template-columns:
            var(--marswiki-left-collapsed)
            minmax(0, 1fr)
            var(--marswiki-right-collapsed);
    }

    .marswiki-left-panel,
    .marswiki-right-panel {
        position: relative;
        min-width: 0;
        overflow: visible;
    }

    .marswiki-panel-toggle {
        position: absolute;
        z-index: 200;
        top: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 40px;
        margin: 0;
        padding: 0 0 2px;
        border: 1px solid #94a3b8;
        border-radius: 5px;
        background: #ffffff;
        box-shadow: 0 1px 3px rgba(15, 23, 42, 0.16);
        color: #334155;
        cursor: pointer;
        font-family: Arial, sans-serif;
        font-size: 23px;
        font-weight: 400;
        line-height: 1;
        opacity: 0;
        transform: translateY(-50%);
        transition:
            opacity 150ms ease,
            background-color 150ms ease,
            border-color 150ms ease,
            color 150ms ease;
    }

    .marswiki-left-panel .marswiki-panel-toggle {
        right: -12px;
    }

    .marswiki-right-panel .marswiki-panel-toggle {
        left: -12px;
    }

    .marswiki-left-panel:hover .marswiki-panel-toggle,
    .marswiki-right-panel:hover .marswiki-panel-toggle,
    .marswiki-panel-toggle:hover,
    .marswiki-panel-toggle:focus-visible,
    .marswiki-left-panel.is-collapsed .marswiki-panel-toggle,
    .marswiki-right-panel.is-collapsed .marswiki-panel-toggle {
        opacity: 1;
    }

    .marswiki-panel-toggle:hover,
    .marswiki-panel-toggle:focus-visible {
        border-color: var(--accent);
        background: #e8f2fb;
        color: #0f5f9f;
        outline: none;
    }

    .marswiki-left-panel.is-collapsed,
    .marswiki-right-panel.is-collapsed {
        padding: 0;
        overflow: visible;
    }

    .marswiki-left-panel.is-collapsed > :not(.marswiki-panel-toggle),
    .marswiki-right-panel.is-collapsed > :not(.marswiki-panel-toggle) {
        display: none;
    }

    .marswiki-app-shell:has(.marswiki-left-panel.is-collapsed) .marswiki-main-panel,
    .marswiki-app-shell:has(.marswiki-right-panel.is-collapsed) .marswiki-main-panel {
        padding-left: 24px;
        padding-right: 24px;
    }
}

/* Prevent accidental horizontal scrolling in the article workspace */

.marswiki-app-shell,
.marswiki-main-panel,
.marswiki-article,
.marswiki-article__content {
    min-width: 0;
    max-width: 100%;
}

.marswiki-main-panel {
    overflow-x: hidden;
}

.marswiki-article__content figure,
.marswiki-article__content .wp-block-image,
.marswiki-article__content img,
.marswiki-article__content table {
    max-width: 100%;
}

/* Tables keep their content readable but never widen the page */
.marswiki-article__content .wp-block-table {
    max-width: 100%;
    overflow-x: auto;
}

.marswiki-article__content .wp-block-table table {
    width: 100%;
}