:root {
    --bg: #0f172a;
    --bg-elev: #111827;
    --panel: #1f2937;
    --panel-2: #0b1220;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --brand: #7c3aed;
    --brand-2: #6366f1;
    --border: #334155;
    --accent: #22c55e;
    --danger: #ef4444;
    --code-bg: #0b1220;
    --code-border: #2b3545;
}

[data-theme="light"] {
    --bg: #f8fafc;
    --bg-elev: #ffffff;
    --panel: #f1f5f9;
    --panel-2: #eef2ff;
    --text: #0f172a;
    --muted: #475569;
    --brand: #7c3aed;
    --brand-2: #4f46e5;
    --border: #e2e8f0;
    --accent: #16a34a;
    --danger: #dc2626;
    --code-bg: #0b1220;
    /* keep code dark for contrast */
    --code-border: #1f2937;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    transition: background .2s ease, color .2s ease;
}

a {
    color: inherit;
}

button,
input {
    font-family: inherit;
}

.icon-btn,
.pill-btn,
.primary-btn {
    cursor: pointer;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    background: var(--brand-2);
    color: #fff;
    padding: .5rem .75rem;
    border-radius: .5rem;
    z-index: 10000;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem .75rem;
    background: var(--panel-2);
    border-bottom: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: baseline;
    gap: .5rem;
    font-weight: 700;
}

.logo {
    color: var(--brand-2);
}

.version {
    color: var(--muted);
    font-weight: 500;
    font-size: .85rem;
}

.top-actions {
    margin-left: auto;
    display: flex;
    gap: .5rem;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: .5rem;
    padding: .4rem .6rem;
}

.icon-btn:hover {
    background: var(--panel);
}

.pill-btn {
    background: var(--brand-2);
    border: none;
    color: #fff;
    padding: .4rem .8rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
}

.pill-btn:hover {
    filter: brightness(1.05);
}

.layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 48px);
    transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.layout.sidebar-collapsed {
    grid-template-columns: 0 1fr;
}

.sidebar {
    border-right: 1px solid var(--border);
    background: linear-gradient(180deg, var(--panel-2), var(--panel));
    overflow-y: auto;
    overflow-x: hidden;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.collapsed {
    opacity: 0;
    pointer-events: none;
}

.sidebar-inner {
    padding: 1rem;
}

.sidebar-section+.sidebar-section {
    margin-top: 1rem;
}

.sidebar-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-section h3 {
    margin: .5rem 0;
    font-size: .9rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--muted);
}

.collapse-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: .375rem;
    color: var(--muted);
    padding: 0 .4rem;
    height: 1.5rem;
    cursor: pointer;
}

.collapse-btn[aria-expanded="false"]::after {
    content: "+";
}

.collapse-btn[aria-expanded="true"]::after {
    content: "−";
}

.sticky-input {
    position: sticky;
    top: 0;
    padding: .5rem 0;
    background: linear-gradient(var(--panel), transparent 90%);
    z-index: 1;
}

.sticky-input input {
    width: 100%;
    padding: .5rem .75rem;
    border: 1px solid var(--border);
    border-radius: .5rem;
    background: var(--bg);
    color: var(--text);
}

.nav-list {
    list-style: none;
    padding: .25rem 0;
    margin: 0;
}

.nav-list li {
    margin: .2rem 0;
}

.nav-list a {
    display: flex;
    align-items: center;
    gap: .5rem;
    text-decoration: none;
    padding: .4rem .5rem;
    border-radius: .5rem;
    color: var(--text);
}

.nav-list a:hover {
    background: var(--panel-2);
}

.nav-list a.active {
    background: rgba(99, 102, 241, 0.18);
    border: 1px solid var(--brand-2);
}

.main {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.content-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev);
    position: sticky;
    top: 48px;
    z-index: 40;
}

.searchbar {
    display: flex;
    gap: .5rem;
}

.searchbar input {
    flex: 1;
    padding: .7rem .9rem;
    border: 1px solid var(--border);
    border-radius: .6rem;
    background: var(--bg);
    color: var(--text);
}

.primary-btn {
    background: var(--brand-2);
    color: white;
    border: none;
    padding: .7rem 1rem;
    border-radius: .6rem;
    font-weight: 600;
}

.primary-btn:hover {
    filter: brightness(1.05);
}

.breadcrumb ol {
    list-style: none;
    padding: .5rem 0 0;
    margin: 0;
    display: flex;
    gap: .4rem;
    color: var(--muted);
}

.breadcrumb a {
    color: var(--brand-2);
    text-decoration: none;
}

.content-wrap {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 2rem;
    padding: 1.25rem;
}

.content {
    max-width: 900px;
}

.content .section {
    margin-bottom: 2.5rem;
}

.section-header {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.section-header h1 {
    margin: 0;
    font-size: 2rem;
}

.copy-link-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    border-radius: .5rem;
    padding: .4rem .6rem;
    cursor: pointer;
}

.copy-link-btn:hover {
    color: var(--text);
    background: var(--panel);
}

.toc {
    position: sticky;
    top: 108px;
    height: calc(100vh - 140px);
    border-left: 1px solid var(--border);
    padding-left: 1rem;
    overflow: auto;
}

.toc h4 {
    margin: 0 0 .5rem 0;
    color: var(--muted);
    font-weight: 600;
}

#toc-list a {
    display: block;
    padding: .25rem 0;
    text-decoration: none;
    color: var(--muted);
}

#toc-list a.active {
    color: var(--brand-2);
    font-weight: 600;
}

.code-block {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: .75rem;
    padding: 1rem;
    margin: 1rem 0;
    position: relative;
    overflow-x: auto;
}

.code-actions {
    position: absolute;
    top: .5rem;
    right: .5rem;
    display: flex;
    gap: .5rem;
}

.code-actions button {
    background: rgba(255, 255, 255, .06);
    color: #e5e7eb;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: .375rem;
    padding: .2rem .4rem;
    font-size: .8rem;
}

.code-actions button:hover {
    background: rgba(255, 255, 255, .12);
}

.inline-code {
    background: rgba(99, 102, 241, .15);
    color: #fbbf24;
    padding: .15rem .35rem;
    border-radius: .35rem;
    font-family: "Fira Code", monospace;
}

.method-table,
.prop-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: var(--panel);
    border-radius: .6rem;
    overflow: hidden;
}

.method-table th,
.method-table td,
.prop-table th,
.prop-table td {
    padding: .75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.method-table th,
.prop-table th {
    background: var(--panel-2);
    text-align: left;
}

.examples-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.example-card {
    border: 1px solid var(--border);
    background: var(--panel);
    border-radius: .75rem;
    padding: 1rem;
    transition: transform .15s ease, box-shadow .15s ease;
}

.example-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .15);
}

.code-panel {
    position: fixed;
    right: -520px;
    top: 0;
    width: 520px;
    height: 100vh;
    background: var(--panel-2);
    border-left: 1px solid var(--border);
    transition: right .25s ease;
    z-index: 60;
    display: flex;
    flex-direction: column;
}

.code-panel.open {
    right: 0;
}

.code-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--border);
}

.close-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: .5rem;
    color: var(--text);
    padding: .3rem .6rem;
}

.code-panel-content {
    padding: 1rem;
    overflow: auto;
}

.search-dialog {
    width: min(940px, 92vw);
    border: none;
    border-radius: .75rem;
    padding: 0;
    background: var(--bg-elev);
    color: var(--text);
}

.search-dialog::backdrop {
    background: rgba(0, 0, 0, 0.55);
}

.search-dialog-inner {
    padding: 1rem;
    display: grid;
    gap: .75rem;
}

#search-dialog-input {
    width: 100%;
    padding: .8rem 1rem;
    border: 1px solid var(--border);
    border-radius: .6rem;
    background: var(--bg);
    color: var(--text);
}

#search-dialog-results {
    max-height: 60vh;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: .6rem;
}

.search-item {
    padding: .6rem .75rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.search-item[aria-selected="true"],
.search-item:hover {
    background: rgba(99, 102, 241, 0.18);
}

.search-hints {
    color: var(--muted);
    font-size: .85rem;
}

mark {
    background: rgba(251, 191, 36, 0.3);
    color: inherit;
    padding: 0.1rem 0.2rem;
    border-radius: 0.2rem;
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-result {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--panel);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.search-result:hover {
    background: var(--panel-2);
}

.search-result h4 {
    margin: 0 0 0.5rem 0;
    color: var(--brand-2);
}

.search-result p {
    margin: 0 0 0.5rem 0;
    color: var(--text);
}

.search-result small {
    color: var(--muted);
}

@media (max-width: 1024px) {
    .layout {
        grid-template-columns: 0 1fr;
    }

    .sidebar {
        position: fixed;
        z-index: 70;
        left: -300px;
        top: 48px;
        width: 280px;
        height: calc(100vh - 48px);
        transition: left .3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar.open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: -1;
        animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    @keyframes fadeIn {
        from { 
            opacity: 0; 
            backdrop-filter: blur(0px);
        }
        to { 
            opacity: 1; 
            backdrop-filter: blur(2px);
        }
    }

    .content-wrap {
        grid-template-columns: 1fr;
    }

    .toc {
        display: none;
    }
}