/* Page layout variables. Code/syntax variables in fe-highlight.css. */

/* Light mode (default) */
:root {
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --text: #1e293b;
    --text-muted: #64748b;
    --accent: #4f46e5;
    --accent-hover: #6366f1;
    --text-accent: #4f46e5;
    --border: #e2e8f0;
    --code-bg: var(--fe-code-bg);

    --hl-ref-bg: rgba(79, 70, 229, 0.08);
    --hl-def-bg: rgba(79, 70, 229, 0.15);
    --hl-def-underline: rgba(79, 70, 229, 0.4);
    --target-bg: rgba(79, 70, 229, 0.06);
}

/* Dark mode via OS preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #1e1e2e;
        --bg-secondary: #181825;
        --text: #cdd6f4;
        --text-muted: #9399b2;
        --accent: #89b4fa;
        --accent-hover: #b4d0fb;
        --text-accent: #89b4fa;
        --border: #313244;
        --code-bg: var(--fe-code-bg);

        --hl-ref-bg: rgba(99, 102, 241, 0.18);
        --hl-def-bg: rgba(99, 102, 241, 0.30);
        --hl-def-underline: rgba(99, 102, 241, 0.6);
        --target-bg: color-mix(in srgb, var(--accent) 10%, var(--bg-secondary));
    }
}

/* Dark mode via explicit toggle */
:root[data-theme="dark"] {
    --bg: #1e1e2e;
    --bg-secondary: #181825;
    --text: #cdd6f4;
    --text-muted: #9399b2;
    --accent: #89b4fa;
    --accent-hover: #b4d0fb;
    --text-accent: #89b4fa;
    --border: #313244;
    --code-bg: var(--fe-code-bg);

    --hl-ref-bg: rgba(99, 102, 241, 0.18);
    --hl-def-bg: rgba(99, 102, 241, 0.30);
    --hl-def-underline: rgba(99, 102, 241, 0.6);
    --target-bg: color-mix(in srgb, var(--accent) 10%, var(--bg-secondary));
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.doc-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.doc-sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 0.75rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header h1 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.sidebar-header h1 a {
    color: var(--accent);
    text-decoration: none;
}

#search {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    margin-bottom: 0.5rem;
}

#search-results {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.search-result {
    display: flex;
    gap: 0.5rem;
    padding: 0.25rem 0.5rem;
    background: var(--bg);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text);
    font-size: 0.875rem;
}

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

.sidebar-nav {
    margin-top: 1rem;
}

.sidebar-separator {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.75rem 0;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-module {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
}

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

.nav-items {
    list-style: none;
    margin-left: 1rem;
    margin-top: 0.25rem;
}

.nav-items li {
    margin: 0.25rem 0;
}

.nav-items a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-items a:hover {
    color: var(--text);
}

.nav-items li.current a {
    color: var(--accent);
    font-weight: 600;
}

/* Grouped navigation by kind */
.nav-groups {
    margin-left: 0.5rem;
    margin-top: 0.5rem;
}

.nav-kind-group {
    margin-bottom: 0.75rem;
}

.nav-kind-header {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    padding-left: 0.5rem;
}

.nav-kind-group .nav-items {
    margin-left: 0.5rem;
}

.doc-content {
    padding: 1.5rem 2rem;
    max-width: 900px;
}

/* Breadcrumb navigation */
.breadcrumb {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

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

.breadcrumb-link:hover {
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--text-muted);
    margin: 0 0.125rem;
}

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

.item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.item-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.item-header h1 {
    font-size: 1.75rem;
    margin: 0;
}

.src-link {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: none;
    font-family: "JetBrains Mono", "Fira Code", monospace;
}

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

.source-toggle {
    margin-top: 0.25rem;
}
.source-toggle summary {
    cursor: pointer;
    list-style: none;
}
.source-toggle summary::before {
    content: "\25b6\00a0";
    font-size: 0.7em;
    transition: transform 0.15s;
    display: inline-block;
}
.source-toggle[open] summary::before {
    transform: rotate(90deg);
}
.source-toggle fe-code-block {
    margin-top: 0.5rem;
}

/* Limit source view height for large items */
.source-toggle[open] fe-code-block {
    max-height: 70vh;
    overflow-y: auto;
}

.kind-badge {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: var(--border);
    color: var(--text-muted);
    text-transform: lowercase;
}

/* Light mode badges */
.kind-badge.struct { background: #dcfce7; color: #166534; }
.kind-badge.enum { background: #fef3c7; color: #92400e; }
.kind-badge.function, .kind-badge.fn { background: #dbeafe; color: #1e40af; }
.kind-badge.trait { background: #f3e8ff; color: #7e22ce; }
.kind-badge.module, .kind-badge.mod { background: #e0e7ff; color: #3730a3; }
.kind-badge.contract { background: #fed7aa; color: #9a3412; }
.kind-badge.type { background: #ccfbf1; color: #115e59; }
.kind-badge.const { background: #ede9fe; color: #5b21b6; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .kind-badge.struct { background: #2d4a3e; color: #7ee787; }
    :root:not([data-theme="light"]) .kind-badge.enum { background: #3d3a2d; color: #e7c77e; }
    :root:not([data-theme="light"]) .kind-badge.function,
    :root:not([data-theme="light"]) .kind-badge.fn { background: #2d3a4a; color: #7eb8e7; }
    :root:not([data-theme="light"]) .kind-badge.trait { background: #4a2d4a; color: #e77ee7; }
    :root:not([data-theme="light"]) .kind-badge.module,
    :root:not([data-theme="light"]) .kind-badge.mod { background: #2d2d4a; color: #9d7ee7; }
    :root:not([data-theme="light"]) .kind-badge.contract { background: #4a3d2d; color: #e7b87e; }
    :root:not([data-theme="light"]) .kind-badge.type { background: #2d4a4a; color: #7ee7e7; }
    :root:not([data-theme="light"]) .kind-badge.const { background: #3a2d4a; color: #b87ee7; }
}
:root[data-theme="dark"] .kind-badge.struct { background: #2d4a3e; color: #7ee787; }
:root[data-theme="dark"] .kind-badge.enum { background: #3d3a2d; color: #e7c77e; }
:root[data-theme="dark"] .kind-badge.function,
:root[data-theme="dark"] .kind-badge.fn { background: #2d3a4a; color: #7eb8e7; }
:root[data-theme="dark"] .kind-badge.trait { background: #4a2d4a; color: #e77ee7; }
:root[data-theme="dark"] .kind-badge.module,
:root[data-theme="dark"] .kind-badge.mod { background: #2d2d4a; color: #9d7ee7; }
:root[data-theme="dark"] .kind-badge.contract { background: #4a3d2d; color: #e7b87e; }
:root[data-theme="dark"] .kind-badge.type { background: #2d4a4a; color: #7ee7e7; }
:root[data-theme="dark"] .kind-badge.const { background: #3a2d4a; color: #b87ee7; }

/* Main item signature at top of page. The wrapper provides the visual
   box; the inner fe-code-block border is suppressed to avoid doubling. */
.signature-wrapper {
    display: flex;
    align-items: baseline;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    margin-bottom: 1rem;
    --fe-code-bg: transparent;
    --fe-code-border: transparent;
}

.signature-wrapper fe-code-block {
    flex: 1;
    margin: 0;
}

.signature-wrapper:hover .anchor {
    opacity: 1;
}

/* Type links in signatures and code blocks — underline indicates clickable,
   color is inherited from the syntax highlight class (hl-type, hl-type-builtin, etc.) */
.type-link {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-color: currentColor;
    cursor: pointer;
}

.type-link:hover {
    text-decoration-style: dashed;
}


.docs {
    margin-bottom: 1.25rem;
}

.docs p {
    margin-bottom: 1rem;
}

.docs code {
    background: var(--code-bg);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875em;
}

h2 {
    font-size: 1.25rem;
    margin: 1rem 0 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.members {
    display: grid;
    gap: 0.75rem;
}

.members dt {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.members dd {
    margin-left: 2rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

/* Children sections (Fields, Variants, Methods) */
.children-sections {
    margin-top: 1.25rem;
}

.children-section {
    margin-bottom: 1rem;
}

.children-section:last-child {
    margin-bottom: 0;
}

.item-list {
    list-style: none;
}

.item-list li {
    margin: 0.5rem 0;
}

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

.item-list a:hover {
    text-decoration: underline;
}

.not-found {
    text-align: center;
    padding: 4rem 2rem;
}

.not-found h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.not-found p {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.not-found code {
    background: var(--code-bg);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: "JetBrains Mono", "Fira Code", monospace;
}

.not-found-hint {
    font-size: 0.875rem;
    font-style: italic;
}

/* Implementations sections */
.implementations {
    margin-top: 1.25rem;
}

.inherent-impls,
.trait-impls {
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    margin-bottom: 1rem;
}

.inherent-impls h2,
.trait-impls h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.impl-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Impl block styling */
.impl-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0;
    margin-bottom: 0.75rem;
    border-left: 3px solid transparent;
}

.impl-block h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
}

.impl-block h3 a {
    color: var(--accent);
    text-decoration: none;
}

.impl-block h3 a:hover {
    text-decoration: underline;
}

.impl-block .signature {
    margin: 0;
    font-size: 0.85rem;
}

/* Rustdoc-inspired toggle/collapsible sections */
.toggle {
    margin-bottom: 0.75rem;
}

.toggle > summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
}

.toggle > summary::-webkit-details-marker {
    display: none;
}

.toggle > summary::before {
    content: '\25b6';
    flex-shrink: 0;
    width: 1rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    transition: transform 0.15s ease;
}

.toggle[open] > summary::before {
    transform: rotate(90deg);
}

/* Anchor links — uniform § link that appears on hover.
   Always inline, always the same size, placed after text content. */
.anchor {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.75em;
    margin-left: auto;
    opacity: 0;
    transition: opacity 0.15s;
}

.impl-block:hover .anchor,
.member-item:hover > .member-header .anchor,
.method-item:hover > summary .anchor,
.implementor-item:hover .anchor,
.item-header:hover .anchor,
h2:hover .anchor {
    opacity: 1;
}

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

.impl-block > summary {
    padding: 0.375rem 0.625rem;
    background: var(--bg-secondary);
    border-radius: 4px 4px 0 0;
}

.impl-block[open] > summary {
    border-bottom: 1px solid var(--border);
}

.impl-header {
    display: flex;
    align-items: baseline;
}

.impl-header h3 {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 600;
}

.impl-header code {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    color: var(--accent);
}

.impl-content {
    padding: 0.5rem 0.75rem;
}

fe-code-block.impl-signature {
    margin: 0 0 0.5rem 0;
    font-size: 0.85rem;
}

/* Method items within impl blocks */
.impl-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.method-item {
    padding: 0.375rem 0.625rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    border-left: 3px solid var(--border);
}

.method-item[open] > summary {
    border-bottom: 1px dashed var(--border);
}

.method-header {
    display: flex;
    align-items: baseline;
}

.method-header h4 {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 500;
}

.code-header code {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    color: var(--text);
}

.method-docblock {
    padding: 0.375rem 0.625rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Module items - rustdoc-style table layout */
.module-items {
    margin-top: 1rem;
}

.item-table {
    margin-bottom: 1.25rem;
}

.item-table h2 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.375rem;
    border-bottom: 1px solid var(--border);
}

.item-list {
    display: flex;
    flex-direction: column;
}

.item-row {
    display: grid;
    grid-template-columns: minmax(150px, max-content) 1fr;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border);
}

.item-row:last-child {
    border-bottom: none;
}

.item-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.item-name a:hover {
    text-decoration: underline;
}

.item-name code {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
}

.item-summary {
    color: var(--text-muted);
    font-size: 0.875rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Implementors section for traits */
.implementors {
    margin-top: 1.25rem;
}

.implementors h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.375rem;
    border-bottom: 1px solid var(--border);
}

.implementor-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.implementor-item {
    display: flex;
    align-items: baseline;
    padding: 0.375rem 0.625rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
}

.impl-go {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 0.5rem;
}

.impl-go:hover {
    color: var(--accent);
}

.implementor-item:target,
.implementor-item.is-target {
    border-color: var(--accent);
    background: var(--target-bg);
}

.implementor-sig {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    color: var(--text);
}

/* Recursive sidebar module tree */
.nav-module-tree {
    margin-bottom: 0.25rem;
}

.nav-module-tree > summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0;
}

.nav-module-tree > summary::-webkit-details-marker {
    display: none;
}

.nav-module-tree > summary::before {
    content: '\25b6';
    font-size: 0.6rem;
    color: var(--text-muted);
    transition: transform 0.15s ease;
    width: 0.75rem;
    flex-shrink: 0;
}

.nav-module-tree[open] > summary::before {
    transform: rotate(90deg);
}

.nav-module-tree > summary a {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
}

.nav-module-tree > summary a:hover {
    color: var(--accent);
}

.nav-module-tree > summary.current a {
    color: var(--accent);
}

.nav-module-content {
    margin-left: 0.5rem;
    padding-left: 0.5rem;
    border-left: 1px solid var(--border);
}

.nav-submodules {
    margin-top: 0.25rem;
}

/* Member items (fields, variants, methods) with anchors */
.member-list {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.member-item {
    padding: 0.375rem 0.625rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    border-left: 3px solid var(--border);
}

.member-header {
    display: flex;
    align-items: baseline;
}

.member-signature {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    color: var(--text);
}

.member-docs {
    margin-top: 0.375rem;
    padding-top: 0.375rem;
    border-top: 1px dashed var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}


/* ============================================================================
   Navigable items: consolidated hover / target / is-target highlighting.
   All items with a left border indicator share these rules. Individual
   base styles (border-left color, background) live with each component above.
   ============================================================================ */
.member-item:hover,
.method-item:hover,
.impl-block:hover {
    border-left-color: var(--accent);
}

.member-item:target,  .member-item.is-target,
.method-item:target,  .method-item.is-target,
.impl-block:target,   .impl-block.is-target {
    border-left-color: var(--accent);
    background: var(--target-bg);
}

/* Syntax highlighting rules live in fe-highlight.css (single source of truth).
   Both the static site and guide/Starlight import that file. */

/* <fe-code-block> custom element (light-DOM host style only).
   Internal shadow-DOM styles (.fe-code-block-wrapper, .fe-line-numbers,
   .fe-code-pre) are in fe-highlight.css — the single source of truth.
   Customize via CSS custom properties:
     --fe-code-bg, --fe-code-border, --fe-code-text,
     --fe-code-font, --fe-code-size, --fe-code-line-height */
fe-code-block {
    display: block;
    margin: 1rem 0;
}

/* <fe-search> custom element */
.fe-search-container {
    position: relative;
}

.fe-search-input {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 0.875rem;
}

.fe-search-results {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 0.25rem;
}

/* <fe-signature> custom element */
.fe-sig {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    white-space: pre;
    color: var(--text);
}

/* Old mobile menu styles removed — see fe-doc-viewer component styles below */

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.sidebar-backdrop.open {
    display: block;
}

/* Responsive: collapse sidebar on narrow viewports */
@media (max-width: 768px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }
    .doc-sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        width: 280px;
        z-index: 100;
        transition: left 0.2s ease;
    }
    .doc-sidebar.open {
        left: 0;
    }
    .doc-content {
        padding: 1rem;
        padding-top: 3rem;
    }
    .mobile-menu-btn {
        display: block;
    }
}

/* In-page section outline */
.page-outline {
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.outline-header {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
}

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

.outline-list li {
    margin: 0.125rem 0;
}

.outline-list a {
    display: block;
    padding: 0.125rem 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    border-left: 2px solid transparent;
    transition: color 0.15s, border-color 0.15s;
}

.outline-list a:hover {
    color: var(--text);
}

.outline-list a.active {
    color: var(--accent);
    border-left-color: var(--accent);
}

/* Outline hierarchy: indent impl blocks and methods */
.outline-list li.outline-level-1 {
    padding-left: 0.75rem;
}

.outline-list li.outline-level-1 a {
    font-size: 0.8rem;
}

.outline-list li.outline-level-2 {
    padding-left: 1.5rem;
}

.outline-list li.outline-level-2 a {
    font-size: 0.75rem;
    font-family: var(--font-mono, ui-monospace, monospace);
}

/* Doc sections (Examples, Panics, Safety, etc.) */
.doc-section {
    margin: 1rem 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.doc-section-badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-muted);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    width: 100%;
}

.doc-section-content {
    padding: 0.625rem 0.875rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

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

.doc-section-content p:last-child {
    margin-bottom: 0;
}

.doc-section-content code {
    background: var(--code-bg);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875em;
}

/* ============================================================================
   Focus Styles (keyboard accessibility)
   ============================================================================ */
:focus-visible {
    outline: 2px solid var(--accent-color, #4a90d9);
    outline-offset: 2px;
}
.nav-items a:focus-visible,
.outline-list a:focus-visible {
    outline-offset: -1px;
    border-radius: 4px;
}
.type-link:focus-visible {
    outline-offset: 0;
    border-radius: 2px;
}

/* ============================================================================
   <fe-doc-viewer> Component Styles
   ============================================================================ */

.fe-doc-viewer {
    display: block;
    min-height: 100vh;
}

.fe-doc-viewer-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.fe-doc-viewer-back {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.875rem;
}

.fe-doc-viewer-back:hover {
    text-decoration: underline;
}

.fe-doc-viewer-title {
    font-weight: 600;
    color: var(--text);
}

.fe-doc-viewer-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    height: calc(100vh - 3rem);
    width: 100%;
}

.fe-doc-viewer-sidebar {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    height: 100%;
    overflow-y: auto;
}

.fe-doc-viewer-sidebar .fe-doc-nav {
    border-right: none;
    height: auto;
    flex: 1;
    overflow-y: auto;
}

.fe-doc-viewer-content {
    padding: 1.5rem 2rem;
    overflow-y: auto;
    background: var(--bg);
}

.fe-doc-viewer-content > * {
    max-width: 900px;
}

fe-doc-viewer, .fe-doc-viewer {
    width: 100%;
}

.fe-doc-viewer-welcome {
    padding: 2rem;
}

.fe-doc-viewer-not-found {
    padding: 2rem;
    color: var(--text-muted);
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 0.5rem;
    right: 0.75rem;
    z-index: 1001;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 6px;
    border: none;
    background: var(--accent);
    color: white;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.sidebar-backdrop.open {
    display: block;
}

/* ============================================================================
   <fe-doc-nav> Component Styles
   ============================================================================ */

.fe-doc-nav {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 0.75rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.fe-doc-nav-search {
    margin-bottom: 0.75rem;
}

.fe-doc-nav-tree {
    margin-top: 0.5rem;
}

.fe-nav-module {
    margin-bottom: 0.25rem;
}

.fe-nav-module > summary {
    list-style: none;
    cursor: pointer;
}

.fe-nav-module > summary::-webkit-details-marker {
    display: none;
}

.fe-nav-module > summary::before {
    content: "\25b8\00a0";
    font-size: 0.7em;
    color: var(--text-muted);
}

.fe-nav-module[open] > summary::before {
    content: "\25be\00a0";
}

.fe-nav-mod-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.fe-nav-mod-name a {
    color: var(--text);
    text-decoration: none;
}

.fe-nav-mod-name a:hover {
    color: var(--accent);
}

.fe-nav-mod-name.current a {
    color: var(--accent);
}

.fe-nav-mod-content {
    margin-left: 0.75rem;
    padding-left: 0.5rem;
}

.fe-nav-kind-group {
    margin-bottom: 0.75rem;
}

.fe-nav-kind-header {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    padding-left: 0.25rem;
}

.fe-nav-items {
    list-style: none;
    margin: 0;
    padding: 0;
}

.fe-nav-items li {
    margin: 0.15rem 0;
}

.fe-nav-items a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.1rem 0.25rem;
    border-radius: 3px;
}

.fe-nav-items a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.fe-nav-items li.current a {
    color: var(--accent);
    font-weight: 600;
}

.fe-nav-badge {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    background: var(--border);
    color: var(--text-muted);
    text-transform: lowercase;
    flex-shrink: 0;
}

.fe-nav-badge.struct { background: #dcfce7; color: #166534; }
.fe-nav-badge.enum { background: #fef3c7; color: #92400e; }
.fe-nav-badge.fn { background: #dbeafe; color: #1e40af; }
.fe-nav-badge.trait { background: #f3e8ff; color: #7e22ce; }
.fe-nav-badge.mod { background: #e0e7ff; color: #3730a3; }
.fe-nav-badge.contract { background: #fed7aa; color: #9a3412; }
.fe-nav-badge.type { background: #ccfbf1; color: #115e59; }
.fe-nav-badge.const { background: #ede9fe; color: #5b21b6; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .fe-nav-badge.struct { background: #2d4a3e; color: #7ee787; }
    :root:not([data-theme="light"]) .fe-nav-badge.enum { background: #3d3a2d; color: #e7c77e; }
    :root:not([data-theme="light"]) .fe-nav-badge.fn { background: #2d3a4a; color: #7eb8e7; }
    :root:not([data-theme="light"]) .fe-nav-badge.trait { background: #4a2d4a; color: #e77ee7; }
    :root:not([data-theme="light"]) .fe-nav-badge.mod { background: #2d2d4a; color: #9d7ee7; }
    :root:not([data-theme="light"]) .fe-nav-badge.contract { background: #4a3d2d; color: #e7b87e; }
    :root:not([data-theme="light"]) .fe-nav-badge.type { background: #2d4a4a; color: #7ee7e7; }
    :root:not([data-theme="light"]) .fe-nav-badge.const { background: #3a2d4a; color: #b87ee7; }
}
:root[data-theme="dark"] .fe-nav-badge.struct { background: #2d4a3e; color: #7ee787; }
:root[data-theme="dark"] .fe-nav-badge.enum { background: #3d3a2d; color: #e7c77e; }
:root[data-theme="dark"] .fe-nav-badge.fn { background: #2d3a4a; color: #7eb8e7; }
:root[data-theme="dark"] .fe-nav-badge.trait { background: #4a2d4a; color: #e77ee7; }
:root[data-theme="dark"] .fe-nav-badge.mod { background: #2d2d4a; color: #9d7ee7; }
:root[data-theme="dark"] .fe-nav-badge.contract { background: #4a3d2d; color: #e7b87e; }
:root[data-theme="dark"] .fe-nav-badge.type { background: #2d4a4a; color: #7ee7e7; }
:root[data-theme="dark"] .fe-nav-badge.const { background: #3a2d4a; color: #b87ee7; }

/* Scroll offset for anchored elements (clears sticky headers) */
.member-item[id], .impl-block[id], .method-item[id], .children-section h2[id],
.implementor-item[id], #implementations, #trait-implementations, #implementors {
    scroll-margin-top: 1rem;
}

/* ============================================================================
   Responsive: mobile layout for new components
   ============================================================================ */

@media (max-width: 768px) {
    .fe-doc-viewer-layout {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 100vh;
    }
    .fe-doc-viewer-sidebar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        z-index: 1000;
        border-right: 1px solid var(--border);
    }
    .fe-doc-viewer-sidebar.open {
        display: flex;
    }
    .mobile-menu-btn {
        display: block;
    }
    .page-outline {
        display: none;
    }
    /* Prevent code blocks from blowing up on mobile */
    .fe-doc-viewer-content {
        overflow-x: hidden;
    }
    fe-code-block {
        max-width: 100%;
        overflow-x: auto;
    }
    .member-item, .impl-block, .method-item {
        overflow-x: auto;
    }
}