/* Metacircular Docs — clean technical document styling */

:root {
    --bg: #fafafa;
    --fg: #1a1a1a;
    --fg-muted: #555;
    --border: #ddd;
    --link: #1a56db;
    --link-hover: #0f3d91;
    --code-bg: #f0f0f0;
    --code-border: #ddd;
    --sidebar-bg: #f5f5f5;
    --sidebar-active: #e8e8e8;
    --max-width: 72rem;
    --content-width: 70ch;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--fg);
    background: var(--bg);
    line-height: 1.65;
}

a {
    color: var(--link);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Header / Breadcrumbs */

header {
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    background: #fff;
}

.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    font-size: 0.9rem;
}

.breadcrumb .sep {
    color: var(--fg-muted);
    margin: 0 0.25rem;
}

/* Main layout */

main {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    gap: 2rem;
    padding: 1.5rem;
    min-height: calc(100vh - 8rem);
}

/* Sidebar */

.sidebar {
    flex: 0 0 14rem;
    position: sticky;
    top: 1.5rem;
    align-self: flex-start;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
}

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

.sidebar li {
    margin: 0;
}

.sidebar li a {
    display: block;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--fg);
}

.sidebar li a:hover {
    background: var(--sidebar-bg);
    text-decoration: none;
}

.sidebar li.active a {
    background: var(--sidebar-active);
    font-weight: 600;
}

/* Content */

#content {
    flex: 1;
    min-width: 0;
    max-width: var(--content-width);
}

/* Index page */

.repo-list {
    display: grid;
    gap: 1rem;
}

.repo-card {
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
}

.repo-card h2 {
    margin: 0 0 0.25rem;
    font-size: 1.15rem;
}

.repo-card p {
    margin: 0 0 0.5rem;
    color: var(--fg-muted);
    font-size: 0.9rem;
}

.doc-count {
    font-size: 0.8rem;
    color: var(--fg-muted);
}

/* Repo page */

.repo-desc {
    color: var(--fg-muted);
    margin-bottom: 1.5rem;
}

.doc-list {
    list-style: none;
    padding: 0;
}

.doc-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.doc-list li:last-child {
    border-bottom: none;
}

/* Table of contents */

.toc {
    margin-bottom: 2rem;
    padding: 1rem 1.25rem;
    background: var(--sidebar-bg);
    border-radius: 6px;
    font-size: 0.9rem;
}

.toc summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.toc li {
    padding: 0.15rem 0;
}

.toc-h2 { padding-left: 0; }
.toc-h3 { padding-left: 1rem; }
.toc-h4 { padding-left: 2rem; }
.toc-h5 { padding-left: 3rem; }

/* Document content */

.doc-content {
    line-height: 1.7;
}

.doc-content h1 { font-size: 1.75rem; margin: 2rem 0 1rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; }
.doc-content h2 { font-size: 1.4rem; margin: 1.75rem 0 0.75rem; border-bottom: 1px solid var(--border); padding-bottom: 0.25rem; }
.doc-content h3 { font-size: 1.15rem; margin: 1.5rem 0 0.5rem; }
.doc-content h4 { font-size: 1rem; margin: 1.25rem 0 0.5rem; }

.doc-content h1:first-child { margin-top: 0; }

.doc-content p {
    margin: 0.75rem 0;
}

.doc-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--code-bg);
    padding: 0.15em 0.35em;
    border-radius: 3px;
}

.doc-content pre {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 6px;
    padding: 1rem;
    overflow-x: auto;
    line-height: 1.45;
    font-size: 0.875rem;
}

.doc-content pre code {
    background: none;
    padding: 0;
    border-radius: 0;
}

.doc-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.doc-content th, .doc-content td {
    border: 1px solid var(--border);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.doc-content th {
    background: var(--sidebar-bg);
    font-weight: 600;
}

.doc-content blockquote {
    margin: 1rem 0;
    padding: 0.5rem 1rem;
    border-left: 3px solid var(--border);
    color: var(--fg-muted);
}

.doc-content ul, .doc-content ol {
    padding-left: 1.5rem;
}

.doc-content li {
    margin: 0.25rem 0;
}

.doc-content img {
    max-width: 100%;
    height: auto;
}

.doc-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

/* Task list (GFM) */
.doc-content ul.contains-task-list {
    list-style: none;
    padding-left: 0;
}

/* Error page */

.error-page {
    text-align: center;
    padding: 3rem 0;
}

.error-page h1 {
    font-size: 3rem;
    color: var(--fg-muted);
}

/* Loading page */

.loading {
    text-align: center;
    padding: 5rem 0;
    color: var(--fg-muted);
}

/* Footer */

footer {
    border-top: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--fg-muted);
}

/* Responsive */

@media (max-width: 768px) {
    main {
        flex-direction: column;
        padding: 1rem;
    }

    .sidebar {
        position: static;
        flex: none;
        max-height: none;
    }

    #content {
        max-width: 100%;
    }
}