/* ============================================================
   monopole.tech -- Documentation Site
   Swiss-grid, minimalist technical documentation aesthetic
   ============================================================ */

:root {
    --color-bg: #ffffff;
    --color-text: #171717;
    --color-meta: #6b7280;
    --color-accent: #2563eb;
    --color-code-bg: #f5f5f5;
    --color-border: #e5e7eb;

    --color-info-bg: #dbeafe;
    --color-info-fg: #2563eb;
    --color-warn-bg: #fef3c7;
    --color-warn-fg: #d97706;
    --color-tip-bg: #d1fae5;
    --color-tip-fg: #059669;

    --font-display: 'Outfit', 'Geist Sans', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-code: 'Fira Code', 'JetBrains Mono', Menlo, Consolas, monospace;

    --sidebar-width: 260px;
    --toc-width: 220px;
    --content-max: 740px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    line-height: 1.75;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   Layout: 3-zone documentation grid
   ============================================================ */
.doc-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

@media (min-width: 1180px) {
    .doc-layout {
        grid-template-columns: var(--sidebar-width) 1fr var(--toc-width);
    }
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    border-right: 1px solid var(--color-border);
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-text);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--color-text);
    color: var(--color-bg);
    font-size: 14px;
    line-height: 1;
}

.brand-name {
    color: var(--color-text);
}

.brand-accent {
    color: var(--color-accent);
}

.sidebar-version {
    font-family: var(--font-code);
    font-size: 0.7rem;
    color: var(--color-meta);
    background: var(--color-code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

/* Search */
.sidebar-search {
    position: relative;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-search input {
    width: 100%;
    padding: 8px 36px 8px 12px;
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-text);
    transition: border-color 0.15s ease, background 0.15s ease;
}

.sidebar-search input::placeholder {
    color: var(--color-meta);
}

.sidebar-search input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg);
}

.search-kbd {
    position: absolute;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-code);
    font-size: 0.7rem;
    color: var(--color-meta);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 1px 6px;
    pointer-events: none;
}

/* Nav */
.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 18px;
}

.nav-section-title {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-meta);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 12px;
    margin-bottom: 4px;
}

.nav-list,
.nav-sublist {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: block;
    padding: 6px 12px;
    margin: 1px 0;
    font-size: 0.875rem;
    color: var(--color-text);
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.12s ease, color 0.12s ease;
    line-height: 1.45;
}

.nav-link:hover {
    background: var(--color-code-bg);
    color: var(--color-accent);
}

.nav-link.active {
    background: var(--color-info-bg);
    color: var(--color-accent);
    font-weight: 500;
}

.nav-sublist {
    margin-top: 2px;
    padding-left: 12px;
    border-left: 1px solid var(--color-border);
    margin-left: 12px;
}

.nav-link-sub {
    font-size: 0.825rem;
    color: var(--color-meta);
    padding: 4px 10px;
}

.nav-link-sub:hover {
    color: var(--color-accent);
}

.nav-link-sub.active {
    color: var(--color-accent);
    background: transparent;
    font-weight: 500;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.footer-link {
    font-size: 0.78rem;
    color: var(--color-meta);
    text-decoration: none;
    transition: color 0.12s ease;
}

.footer-link:hover {
    color: var(--color-accent);
}

/* ============================================================
   Main content
   ============================================================ */
.content {
    grid-column: 2;
    padding: 48px 56px 96px;
    min-width: 0;
}

@media (min-width: 1180px) {
    .content {
        grid-column: 2;
    }
}

.content-inner {
    max-width: var(--content-max);
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    font-size: 0.8rem;
    color: var(--color-meta);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--color-meta);
    text-decoration: none;
    transition: color 0.12s ease;
}

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

.breadcrumb-sep {
    color: var(--color-border);
    font-size: 0.9rem;
}

.breadcrumb-current {
    color: var(--color-text);
    font-weight: 500;
}

/* Article */
.doc-article {
    /* article container */
}

.article-header {
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.doc-article h1 {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 12px;
    color: var(--color-text);
}

.article-lede {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--color-meta);
    margin: 0 0 16px;
    font-weight: 400;
}

.article-meta {
    font-size: 0.78rem;
    color: var(--color-meta);
    display: flex;
    gap: 8px;
    align-items: center;
}

.meta-dot {
    color: var(--color-border);
}

/* Sections */
.doc-section {
    margin-bottom: 48px;
    scroll-margin-top: 32px;
}

.doc-article h2 {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.015em;
    margin: 0 0 16px;
    color: var(--color-text);
    scroll-margin-top: 32px;
}

.doc-article h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
    margin: 28px 0 10px;
    color: var(--color-text);
    scroll-margin-top: 32px;
}

.doc-article p {
    margin: 0 0 16px;
}

.doc-article a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s ease;
}

.doc-article a:hover {
    border-bottom-color: var(--color-accent);
}

.doc-article strong {
    font-weight: 600;
    color: var(--color-text);
}

/* Inline code */
.doc-article code {
    font-family: var(--font-code);
    font-size: 0.85em;
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--color-text);
}

/* Code blocks */
.code-block {
    margin: 20px 0 24px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--color-code-bg);
}

.code-header {
    background: var(--color-border);
    padding: 4px 12px;
    font-size: 0.75rem;
    border-radius: 6px 6px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-code);
}

.code-lang {
    color: var(--color-text);
    text-transform: lowercase;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.code-copy {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--color-meta);
    font-family: var(--font-code);
    font-size: 0.72rem;
    padding: 1px 8px;
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.code-copy:hover {
    background: var(--color-bg);
    color: var(--color-accent);
    border-color: var(--color-bg);
}

.code-copy.is-copied {
    color: var(--color-tip-fg);
    background: var(--color-tip-bg);
    border-color: var(--color-tip-bg);
}

.code-block pre {
    margin: 0;
    padding: 16px 18px;
    overflow-x: auto;
    background: var(--color-code-bg);
}

.code-block pre code {
    font-family: var(--font-code);
    font-size: 0.85rem;
    line-height: 1.7;
    background: transparent;
    border: none;
    padding: 0;
    color: var(--color-text);
    display: block;
    white-space: pre;
}

/* Callouts */
.callout {
    display: flex;
    gap: 12px;
    border-left: 3px solid;
    padding: 14px 16px;
    margin: 20px 0 24px;
    border-radius: 0 6px 6px 0;
    background: var(--color-code-bg);
}

.callout-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-code);
    font-size: 0.78rem;
    font-weight: 700;
    color: #ffffff;
    margin-top: 2px;
}

.callout-body {
    flex: 1;
    min-width: 0;
}

.callout-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.92rem;
    margin-bottom: 4px;
}

.callout-body p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.65;
}

.callout-info {
    border-left-color: var(--color-info-fg);
    background: var(--color-info-bg);
}

.callout-info .callout-icon {
    background: var(--color-info-fg);
}

.callout-info .callout-title {
    color: var(--color-info-fg);
}

.callout-warning {
    border-left-color: var(--color-warn-fg);
    background: var(--color-warn-bg);
}

.callout-warning .callout-icon {
    background: var(--color-warn-fg);
}

.callout-warning .callout-title {
    color: var(--color-warn-fg);
}

.callout-tip {
    border-left-color: var(--color-tip-fg);
    background: var(--color-tip-bg);
}

.callout-tip .callout-icon {
    background: var(--color-tip-fg);
}

.callout-tip .callout-title {
    color: var(--color-tip-fg);
}

.callout a {
    color: inherit;
    border-bottom: 1px solid currentColor;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin: 20px 0 24px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.doc-table thead {
    background: var(--color-code-bg);
}

.doc-table th {
    text-align: left;
    padding: 10px 14px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-meta);
    border-bottom: 1px solid var(--color-border);
}

.doc-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.doc-table tbody tr:last-child td {
    border-bottom: none;
}

.doc-table tbody tr:hover {
    background: var(--color-code-bg);
}

/* Article footer */
.article-footer {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.page-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

.page-nav-prev,
.page-nav-next {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 18px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-decoration: none;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.page-nav-prev {
    align-items: flex-start;
}

.page-nav-next {
    align-items: flex-end;
    text-align: right;
}

.page-nav-prev:hover,
.page-nav-next:hover {
    border-color: var(--color-accent);
    background: var(--color-bg);
}

.page-nav-label {
    font-size: 0.72rem;
    color: var(--color-meta);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
}

.page-nav-title {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.page-nav-prev:hover .page-nav-title,
.page-nav-next:hover .page-nav-title {
    color: var(--color-accent);
}

.article-credits {
    font-size: 0.78rem;
    color: var(--color-meta);
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

/* ============================================================
   Mini TOC (right rail)
   ============================================================ */
.toc {
    display: none;
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    overflow-y: auto;
    padding: 56px 28px 48px;
    border-left: 1px solid var(--color-border);
}

@media (min-width: 1180px) {
    .toc {
        display: block;
    }
}

.toc-title {
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-meta);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

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

.toc-link {
    display: block;
    font-size: 0.82rem;
    color: var(--color-meta);
    text-decoration: none;
    padding: 6px 10px;
    border-left: 2px solid transparent;
    margin-left: -2px;
    transition: color 0.12s ease, border-color 0.12s ease;
    line-height: 1.45;
}

.toc-link:hover {
    color: var(--color-text);
}

.toc-link.is-current {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    font-weight: 500;
}

.toc-divider {
    height: 1px;
    background: var(--color-border);
    margin: 20px 0;
}

.toc-meta {
    font-size: 0.78rem;
    color: var(--color-meta);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toc-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.toc-meta-row code {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--color-text);
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 1px 6px;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--color-tip-fg);
    background: var(--color-tip-bg);
    border-radius: 999px;
    padding: 2px 10px;
    font-weight: 500;
}

.status-pill::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-tip-fg);
    box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.18);
    animation: pulseDot 2.4s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.4); }
    50% { box-shadow: 0 0 0 4px rgba(5, 150, 105, 0); }
}

/* ============================================================
   Search filtering state
   ============================================================ */
.nav-link.is-hidden {
    display: none;
}

.nav-link mark {
    background: var(--color-warn-bg);
    color: var(--color-warn-fg);
    border-radius: 2px;
    padding: 0 2px;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 860px) {
    :root {
        --sidebar-width: 100%;
    }

    .doc-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .content {
        grid-column: 1;
        padding: 32px 24px 64px;
    }

    .page-nav {
        grid-template-columns: 1fr;
    }
}