:root,
[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0b0b12;
    --bg-sidebar: #0e0e17;
    --bg-code: #171722;
    --bg-pre: #12121c;
    --bg-pre-header: #1b1b28;
    --pre-text: #e8e8f2;
    --pre-header-text: #9d9db3;
    --topbar-bg: rgba(11, 11, 18, 0.85);
    --card-bg: #10101a;
    --text: #f0f0f6;
    --text-body: #c9c9d6;
    --text-muted: #9b9bb0;
    --text-faint: #66667c;
    --border: #23232f;
    --border-strong: #323244;
    --accent: #7c3aed;
    --accent-soft: rgba(124, 58, 237, 0.16);
    --accent-softer: rgba(124, 58, 237, 0.07);
    --accent-secondary: #a78bfa;
    --badge-ok-bg: rgba(34, 197, 94, 0.12);
    --badge-ok-border: rgba(34, 197, 94, 0.35);
    --badge-ok-text: #4ade80;
    --badge-off-bg: #171722;
    --badge-off-border: #23232f;
    --badge-off-text: #66667c;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 10px 32px -8px rgba(0, 0, 0, 0.6);
    --radius: 12px;
    --topbar-h: 62px;
    --sidebar-w: 288px;
    --toc-w: 220px;
    --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

[data-theme="light"] {
    color-scheme: light;
    --bg: #ffffff;
    --bg-sidebar: #fbfbfd;
    --bg-code: #f5f5f8;
    --bg-pre: #16161f;
    --bg-pre-header: #23232f;
    --pre-text: #e8e8f2;
    --pre-header-text: #9d9db3;
    --topbar-bg: rgba(255, 255, 255, 0.88);
    --card-bg: #ffffff;
    --text: #17171f;
    --text-body: #2c2c36;
    --text-muted: #6f6f80;
    --text-faint: #9b9bac;
    --border: #e8e8ef;
    --border-strong: #d9d9e3;
    --accent-soft: rgba(124, 58, 237, 0.08);
    --accent-softer: rgba(124, 58, 237, 0.04);
    --badge-ok-bg: rgba(22, 163, 74, 0.09);
    --badge-ok-border: rgba(22, 163, 74, 0.25);
    --badge-ok-text: #15803d;
    --badge-off-bg: #f5f5f8;
    --badge-off-border: #e8e8ef;
    --badge-off-text: #9b9bac;
    --shadow-sm: 0 1px 2px rgba(20, 20, 40, 0.05);
    --shadow-md: 0 6px 24px -8px rgba(20, 20, 40, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--topbar-h) + 24px);
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

a:hover {
    text-decoration: underline;
}

::selection {
    background: var(--accent-soft);
}

/* ---------- Topbar ---------- */

.topbar {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 0 22px;
    background: var(--topbar-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--text);
    font-weight: 700;
    font-size: 15.5px;
    white-space: nowrap;
}

.brand:hover {
    text-decoration: none;
}

#brand-logo {
    height: 26px;
    width: auto;
    display: none;
}

.brand-badge {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid var(--accent-soft);
    padding: 2px 8px;
    border-radius: 999px;
}

.menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 34px;
    height: 34px;
    padding: 7px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    cursor: pointer;
}

.menu-btn span {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
}

/* ---------- Theme toggle ---------- */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}

.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* ---------- Search ---------- */

.search {
    position: relative;
    flex: 1;
    max-width: 420px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-faint);
    pointer-events: none;
}

.search input {
    width: 100%;
    height: 38px;
    padding: 0 40px 0 34px;
    font-size: 13.5px;
    font-family: inherit;
    color: var(--text);
    background: var(--bg-code);
    border: 1px solid transparent;
    border-radius: 10px;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
}

.search input::placeholder {
    color: var(--text-faint);
}

.search input:focus {
    background: var(--bg);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.search kbd {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-faint);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 1px 6px;
    pointer-events: none;
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    max-height: 380px;
    overflow-y: auto;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 6px;
}

.search-result {
    display: block;
    padding: 9px 12px;
    border-radius: 8px;
    cursor: pointer;
}

.search-result:hover,
.search-result.selected {
    background: var(--accent-soft);
    text-decoration: none;
}

.search-result-title {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text);
}

.search-result-path {
    font-size: 11.5px;
    color: var(--text-faint);
    font-family: var(--mono);
}

.search-result-snippet {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 2px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-empty {
    padding: 14px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
}

/* ---------- Top nav ---------- */

.topnav {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
}

.topnav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 13.5px;
    font-weight: 500;
    white-space: nowrap;
}

.topnav-link:hover {
    color: var(--accent);
    text-decoration: none;
}

.locale-switch {
    display: flex;
    gap: 3px;
    padding: 3px;
    background: var(--bg-code);
    border-radius: 999px;
}

.locale-switch button {
    border: 0;
    background: transparent;
    padding: 5px 11px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-muted);
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.locale-switch button:hover {
    color: var(--text);
}

.locale-switch button.active {
    background: var(--accent);
    color: #fff;
}

/* ---------- Layout ---------- */

.layout {
    display: flex;
    padding-top: var(--topbar-h);
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    position: sticky;
    top: var(--topbar-h);
    height: calc(100vh - var(--topbar-h));
    overflow-y: auto;
    border-right: 1px solid var(--border);
    background: var(--bg-sidebar);
    padding: 22px 14px 56px;
    scrollbar-width: thin;
}

.sidebar-backdrop {
    display: none;
}

.nav-section {
    margin: 20px 0 4px;
}

.nav-section:first-child {
    margin-top: 0;
}

.nav-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 4px;
    padding: 0 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.nav-section-icon {
    font-size: 13px;
}

.nav-link {
    display: flex;
    align-items: center;
    position: relative;
    padding: 6.5px 10px;
    margin: 1px 0;
    border-radius: 8px;
    color: var(--text-body);
    font-size: 13.5px;
    line-height: 1.35;
    transition: background 0.12s, color 0.12s;
}

.nav-link:hover {
    background: var(--accent-softer);
    color: var(--accent);
    text-decoration: none;
}

.nav-link.active {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

.nav-link.active::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 6px;
    bottom: 6px;
    width: 3px;
    border-radius: 3px;
    background: var(--accent);
}

.nav-section-reference {
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.nav-link-reference {
    gap: 8px;
    font-weight: 600;
    color: var(--text);
}

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

.nav-link-reference .nav-section-icon {
    font-size: 14px;
}

.nav-link-ext {
    margin-left: auto;
    font-size: 11px;
    color: var(--text-faint);
    transition: color 0.12s;
}

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

/* ---------- Content ---------- */

.content {
    flex: 1;
    min-width: 0;
    padding: 36px clamp(24px, 5vw, 72px) 40px;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    color: var(--text-faint);
    margin-bottom: 18px;
    min-height: 18px;
}

.breadcrumbs .crumb-link {
    color: var(--text-muted);
}

.breadcrumbs .crumb-link:hover {
    color: var(--accent);
    text-decoration: none;
}

.breadcrumbs .crumb-sep {
    color: var(--border-strong);
}

.breadcrumbs .crumb-current {
    color: var(--text);
    font-weight: 600;
}

.page-grid {
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.page-state {
    color: var(--text-faint);
    font-size: 14px;
    padding: 24px 0;
}

/* ---------- TOC ---------- */

.toc {
    width: var(--toc-w);
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--topbar-h) + 36px);
    max-height: calc(100vh - var(--topbar-h) - 72px);
    overflow-y: auto;
    padding-right: 4px;
}

.toc:empty {
    display: none;
}

.toc-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 10px;
}

.toc a {
    display: block;
    padding: 4px 0 4px 14px;
    font-size: 12.5px;
    line-height: 1.5;
    color: var(--text-muted);
    border-left: 2px solid var(--border);
    transition: color 0.12s, border-color 0.12s;
}

.toc a:hover {
    color: var(--accent);
    text-decoration: none;
}

.toc a.level3 {
    padding-left: 26px;
    font-size: 12px;
}

.toc a.active {
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 600;
}

/* ---------- Footer ---------- */

.page-footer {
    max-width: 780px;
    margin-top: 72px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    gap: 18px;
}

.footer-links a {
    color: var(--text-muted);
}

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

/* ---------- Markdown ---------- */

.markdown-body {
    flex: 1;
    min-width: 0;
    max-width: 800px;
    line-height: 1.75;
    font-size: 15px;
}

.markdown-body h1 {
    font-size: 36px;
    line-height: 1.15;
    margin: 6px 0 18px;
    letter-spacing: -0.025em;
    background: linear-gradient(120deg, var(--text) 55%, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.markdown-body h1 + p {
    font-size: 16.5px;
    color: var(--text-muted);
    line-height: 1.7;
}

.markdown-body h2 {
    font-size: 23px;
    margin: 48px 0 14px;
    letter-spacing: -0.015em;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.markdown-body h3 {
    font-size: 17.5px;
    margin: 34px 0 10px;
}

.markdown-body h2 a.anchor,
.markdown-body h3 a.anchor {
    opacity: 0;
    margin-left: 8px;
    color: var(--accent);
    font-weight: 400;
    transition: opacity 0.15s;
}

.markdown-body h2:hover a.anchor,
.markdown-body h3:hover a.anchor {
    opacity: 1;
}

.markdown-body p {
    margin: 12px 0;
    color: var(--text-body);
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 24px;
    margin: 12px 0;
}

.markdown-body li {
    margin: 6px 0;
}

.markdown-body li::marker {
    color: var(--accent);
}

.markdown-body strong {
    font-weight: 650;
    color: var(--text);
}

.markdown-body code {
    font-family: var(--mono);
    font-size: 0.86em;
    background: var(--bg-code);
    border: 1px solid var(--border);
    padding: 1.5px 6px;
    border-radius: 6px;
    color: var(--accent-secondary);
}

.markdown-body pre {
    position: relative;
    margin: 0;
    padding: 16px 18px;
    background: var(--bg-pre);
    border-radius: 0 0 var(--radius) var(--radius);
    overflow-x: auto;
    line-height: 1.65;
}

.markdown-body pre code {
    background: transparent;
    border: 0;
    color: var(--pre-text);
    padding: 0;
    font-size: 12.75px;
}

.code-block {
    margin: 18px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-pre-header);
    padding: 7px 12px;
}

.code-lang {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--pre-header-text);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    border: 0;
    background: rgba(255, 255, 255, 0.07);
    color: #c8c8d8;
    font-size: 11px;
    font-weight: 600;
    padding: 3.5px 9px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

.markdown-body blockquote {
    margin: 20px 0;
    padding: 14px 18px;
    border-left: 3px solid var(--accent);
    background: var(--accent-softer);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.markdown-body blockquote p {
    margin: 4px 0;
    color: var(--text-body);
}

.table-wrap {
    overflow-x: auto;
    margin: 18px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.table-wrap table {
    margin: 0;
    border: 0;
    width: 100%;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 13.5px;
}

.markdown-body th,
.markdown-body td {
    border-bottom: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
    vertical-align: top;
}

.markdown-body th {
    background: var(--bg-code);
    font-weight: 650;
    font-size: 12.5px;
    letter-spacing: 0.02em;
    color: var(--text);
    white-space: nowrap;
}

.markdown-body tr:last-child td {
    border-bottom: 0;
}

.markdown-body td code {
    white-space: nowrap;
}

.markdown-body hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 40px 0;
}

.markdown-body img {
    max-width: 100%;
}

/* ---------- Cards (raw HTML in markdown) ---------- */

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
    margin: 22px 0;
}

.card {
    display: block;
    padding: 18px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.card:hover {
    text-decoration: none;
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    font-size: 19px;
    background: var(--accent-soft);
    border-radius: 10px;
    margin-bottom: 12px;
}

.card h3 {
    margin: 0 0 6px !important;
    font-size: 14.5px !important;
    color: var(--text);
    letter-spacing: 0 !important;
    border: 0 !important;
    padding: 0 !important;
}

.card p {
    margin: 0 !important;
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-muted) !important;
}

.card-arrow {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11.5px;
    font-weight: 650;
    padding: 2px 9px;
    border-radius: 999px;
    background: var(--badge-off-bg);
    border: 1px solid var(--badge-off-border);
    color: var(--badge-off-text);
    white-space: nowrap;
}

.badge.ok {
    background: var(--badge-ok-bg);
    border-color: var(--badge-ok-border);
    color: var(--badge-ok-text);
}

.badge.off {
    background: var(--badge-off-bg);
    color: var(--badge-off-text);
}

/* ---------- Currency chips ---------- */

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 18px 0;
}

.chip {
    font-family: var(--mono);
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: 0.03em;
    padding: 4px 13px;
    border-radius: 999px;
    background: var(--bg-code);
    border: 1px solid var(--border);
    color: var(--text-body);
    transition: border-color 0.15s, color 0.15s;
}

.chip:hover {
    border-color: var(--border-strong);
    color: var(--text);
}

.chip.primary {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

/* ---------- Responsive ---------- */

@media (max-width: 1240px) {
    .toc {
        display: none;
    }
}

@media (max-width: 960px) {
    .menu-btn {
        display: flex;
    }

    .topnav-link {
        display: none;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: var(--topbar-h);
        z-index: 90;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        box-shadow: var(--shadow-md);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-backdrop.open {
        display: block;
        position: fixed;
        inset: var(--topbar-h) 0 0 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 80;
    }

    .content {
        padding: 28px 20px 48px;
    }

    .markdown-body h1 {
        font-size: 30px;
    }

    .search kbd {
        display: none;
    }
}