/* ============================================
   RESET & CUSTOM PROPERTIES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-elevated: #18181b;
    --bg-hover: rgba(255, 255, 255, 0.04);

    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.12);

    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-quaternary: #52525b;

    --accent-cyan: #22d3ee;
    --accent-purple: #a78bfa;
    --accent-green: #4ade80;

    --sidebar-width: 320px;
    --toc-width: 280px;
}

/* View Transitions */
@view-transition {
    navigation: auto;
}

/* Disable horizontal movement in view transitions - only allow vertical/opacity */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
}

/* Tree items - each has unique view-transition-name for position animation */
[data-layout="ontology"] > nav li {
    contain: layout;
}

/* Main content can crossfade */
[data-layout="ontology"] > main {
    view-transition-name: main-content;
}

::view-transition-old(main-content),
::view-transition-new(main-content) {
    animation-duration: 0.15s;
}

/* ============================================
   BASE LAYOUT
   ============================================ */
html {
    scroll-behavior: smooth;
}

[data-layout="ontology"] {
    background: var(--bg-primary);
    color: var(--text-secondary);
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--toc-width);
}

/* Subtle noise overlay */
[data-layout="ontology"]::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    background-repeat: repeat;
    opacity: 0.03;
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   MOBILE HEADER
   ============================================ */
[data-layout="ontology"] > header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    padding: 0 16px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 200;
    align-items: center;
    justify-content: space-between;
}

[data-layout="ontology"] > header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    background-repeat: repeat;
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

[data-layout="ontology"] > header > a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
}

[data-layout="ontology"] > header > a img {
    width: 24px;
    height: 24px;
}

[data-layout="ontology"] > header > button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.15s ease;
}

[data-layout="ontology"] > header > button:hover {
    background: var(--bg-hover);
}

[data-layout="ontology"] > header > button svg {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

/* ============================================
   LEFT SIDEBAR
   ============================================ */
[data-layout="ontology"] > nav {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    padding: 0 16px 20px 32px;
    border-right: 1px solid var(--border-subtle);
    background: var(--bg-primary);
    z-index: 100;
}

[data-layout="ontology"] > nav::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    background-repeat: repeat;
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

[data-layout="ontology"] > nav::-webkit-scrollbar {
    width: 0;
}

/* Hide close button on desktop */
[data-layout="ontology"] > nav > .sidebar-close-btn {
    display: none;
}

/* Sidebar logo/header link */
[data-layout="ontology"] > nav > a:first-of-type {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 16px 16px 0;
    margin: 0 -16px 4px -32px;
    padding-left: 32px;
    padding-right: 16px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    background: var(--bg-primary);
    z-index: 10;
}

[data-layout="ontology"] > nav > a:first-of-type img {
    width: 28px;
    height: 28px;
}

/* Thing link at top of sidebar */
[data-layout="ontology"] > nav > a.thing-link {
    display: block;
    padding: 6px 10px 6px 28px;
    margin-bottom: 2px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.15s ease;
}

[data-layout="ontology"] > nav > a.thing-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* Sidebar sections (for property pages) */
[data-layout="ontology"] > nav > section {
    margin-bottom: 24px;
}

[data-layout="ontology"] > nav > section > h2 {
    display: block;
    padding: 0 10px;
    margin-bottom: 8px;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-quaternary);
}

/* Sidebar tree */
[data-layout="ontology"] > nav > menu.tree,
[data-layout="ontology"] > nav > section > menu.tree {
    display: flex;
    flex-direction: column;
    list-style: none;
}

[data-layout="ontology"] > nav menu {
    display: flex;
    flex-direction: column;
    list-style: none;
}

[data-layout="ontology"] > nav li > a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    font-size: 13px;
    color: var(--text-tertiary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.15s ease;
}

[data-layout="ontology"] > nav li > a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

[data-layout="ontology"] > nav li > a[aria-current="page"] {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

[data-layout="ontology"] > nav .folder-icon {
    font-size: 8px;
    color: var(--text-quaternary);
    width: 12px;
    flex-shrink: 0;
}

/* Tree indentation (6px per level) */
[data-layout="ontology"] > nav li[data-depth="1"] > a { padding-left: 16px; }
[data-layout="ontology"] > nav li[data-depth="2"] > a { padding-left: 22px; }
[data-layout="ontology"] > nav li[data-depth="3"] > a { padding-left: 28px; }
[data-layout="ontology"] > nav li[data-depth="4"] > a { padding-left: 34px; }
[data-layout="ontology"] > nav li[data-depth="5"] > a { padding-left: 40px; }
[data-layout="ontology"] > nav li[data-depth="6"] > a { padding-left: 46px; }
[data-layout="ontology"] > nav li[data-depth="7"] > a { padding-left: 52px; }
[data-layout="ontology"] > nav li[data-depth="8"] > a { padding-left: 58px; }
[data-layout="ontology"] > nav li[data-depth="9"] > a { padding-left: 64px; }
[data-layout="ontology"] > nav li[data-depth="10"] > a { padding-left: 70px; }

/* ============================================
   MAIN CONTENT
   ============================================ */
[data-layout="ontology"] > main {
    grid-column: 2;
    padding: 20px 56px 120px;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

/* Breadcrumbs */
[data-layout="ontology"] > main .breadcrumbs {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

[data-layout="ontology"] > main .breadcrumbs nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-tertiary);
}

[data-layout="ontology"] > main .breadcrumbs a {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color 0.15s ease;
}

[data-layout="ontology"] > main .breadcrumbs a:hover {
    color: var(--accent-cyan);
}

[data-layout="ontology"] > main .breadcrumbs .separator {
    margin: 0 8px;
    color: var(--text-quaternary);
}

[data-layout="ontology"] > main .breadcrumbs [aria-current="page"] {
    color: var(--text-secondary);
}

[data-layout="ontology"] > main h1 {
    font-size: 40px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 12px;
}

[data-layout="ontology"] > main > p:first-of-type {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-tertiary);
    margin-bottom: 48px;
}

[data-layout="ontology"] > main > p a {
    color: var(--accent-cyan);
    text-decoration: none;
}

[data-layout="ontology"] > main > p a:hover {
    text-decoration: underline;
}

/* Inline code */
[data-layout="ontology"] code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
    padding: 2px 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--accent-cyan);
}

[data-layout="ontology"] > main h2 a {
    color: var(--accent-cyan);
    text-decoration: none;
}

[data-layout="ontology"] > main h2 a:hover {
    text-decoration: underline;
}

/* General link styles in article content */
[data-layout="ontology"] > main article a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color 0.15s ease;
}

[data-layout="ontology"] > main article a:hover {
    text-decoration: underline;
}

/* Links in lists */
[data-layout="ontology"] > main article ul a,
[data-layout="ontology"] > main article li a {
    color: var(--accent-cyan);
    text-decoration: none;
}

[data-layout="ontology"] > main article ul a:hover,
[data-layout="ontology"] > main article li a:hover {
    text-decoration: underline;
}

/* Section headers */
[data-layout="ontology"] > main h2 {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-top: 64px;
    margin-bottom: 20px;
    padding-top: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

[data-layout="ontology"] > main h2::before {
    content: '';
    width: 12px;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

[data-layout="ontology"] > main h2::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-subtle), transparent);
}

[data-layout="ontology"] > main > p:first-of-type + section h2 {
    margin-top: 0;
    padding-top: 0;
}

[data-layout="ontology"] > main > section:first-of-type h2 {
    margin-top: 0;
    padding-top: 0;
}

/* ============================================
   TABLES
   ============================================ */
[data-layout="ontology"] > main table {
    position: relative;
    width: 100%;
    margin-bottom: 8px;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
    z-index: 1;
}

[data-layout="ontology"] > main thead tr {
    background: var(--bg-elevated);
}

[data-layout="ontology"] > main th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-quaternary);
    border-bottom: 1px solid var(--border-subtle);
}

[data-layout="ontology"] > main tbody tr {
    transition: background 0.15s ease;
}

[data-layout="ontology"] > main tbody tr:hover {
    background: var(--bg-hover);
}

[data-layout="ontology"] > main td {
    padding: 14px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: top;
}

[data-layout="ontology"] > main tbody tr:last-child td {
    border-bottom: none;
}

/* Column styles */
[data-layout="ontology"] > main td:first-child {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent-cyan);
    white-space: nowrap;
}

[data-layout="ontology"] > main td:first-child a {
    color: inherit;
    text-decoration: none;
}

[data-layout="ontology"] > main td:first-child a:hover {
    text-decoration: underline;
}

[data-layout="ontology"] > main td:nth-child(2) {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--accent-purple);
}

[data-layout="ontology"] > main td:nth-child(2) a {
    display: block;
    color: inherit;
    text-decoration: none;
}

[data-layout="ontology"] > main td:nth-child(2) a:hover {
    text-decoration: underline;
}

[data-layout="ontology"] > main td:nth-child(3),
[data-layout="ontology"] > main td:nth-child(4) {
    color: var(--text-tertiary);
}

[data-layout="ontology"] > main td:nth-child(3) a,
[data-layout="ontology"] > main td:nth-child(4) a {
    color: inherit;
    text-decoration: none;
}

[data-layout="ontology"] > main td:nth-child(3) a:hover,
[data-layout="ontology"] > main td:nth-child(4) a:hover {
    text-decoration: underline;
}

/* Actions section - Result column */
[data-layout="ontology"] > main section[aria-labelledby="actions"] td:nth-child(3) {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--accent-green);
}

/* Events section - 2 columns only */
[data-layout="ontology"] > main section[aria-labelledby="events"] td:nth-child(2) {
    font-family: inherit;
    color: var(--text-tertiary);
}

/* Two-column tables where column 2 is Description (not types) */
[data-layout="ontology"] > main section[aria-labelledby="expected-types"] td:nth-child(2),
[data-layout="ontology"] > main section[aria-labelledby="used-on"] td:nth-child(2),
[data-layout="ontology"] > main section[aria-labelledby="subtypes"] td:nth-child(2),
[data-layout="ontology"] > main section[aria-labelledby="enum-values"] td:nth-child(2),
[data-layout="ontology"] > main section[aria-labelledby^="inherited-"] td:nth-child(2),
[data-layout="ontology"] > main section[aria-labelledby="core-types"] td:nth-child(2) {
    font-family: inherit;
    color: var(--text-tertiary);
}

/* Reset link display to inline in description columns and add link styling */
[data-layout="ontology"] > main section[aria-labelledby="expected-types"] td:nth-child(2) a,
[data-layout="ontology"] > main section[aria-labelledby="used-on"] td:nth-child(2) a,
[data-layout="ontology"] > main section[aria-labelledby="subtypes"] td:nth-child(2) a,
[data-layout="ontology"] > main section[aria-labelledby="enum-values"] td:nth-child(2) a,
[data-layout="ontology"] > main section[aria-labelledby^="inherited-"] td:nth-child(2) a,
[data-layout="ontology"] > main section[aria-labelledby="core-types"] td:nth-child(2) a,
[data-layout="ontology"] > main td:nth-child(3) a,
[data-layout="ontology"] > main td:nth-child(4) a {
    display: inline;
    color: var(--accent-cyan);
    text-decoration: none;
}

[data-layout="ontology"] > main section[aria-labelledby="expected-types"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main section[aria-labelledby="used-on"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main section[aria-labelledby="subtypes"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main section[aria-labelledby="enum-values"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main section[aria-labelledby^="inherited-"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main section[aria-labelledby="core-types"] td:nth-child(2) a:hover,
[data-layout="ontology"] > main td:nth-child(3) a:hover,
[data-layout="ontology"] > main td:nth-child(4) a:hover {
    text-decoration: underline;
}

/* ============================================
   RIGHT TOC
   ============================================ */
[data-layout="ontology"] > aside {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--toc-width);
    height: 100vh;
    padding: 0 32px 0 16px;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

[data-layout="ontology"] > aside > h2 {
    flex-shrink: 0;
    display: block;
    padding: 72px 0 16px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-quaternary);
    background: var(--bg-primary);
}

[data-layout="ontology"] > aside > menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding-bottom: 16px;
    list-style: none;
}

[data-layout="ontology"] > aside > menu > li > a {
    display: block;
    padding: 6px 0 6px 15px;
    font-size: 13px;
    color: var(--text-tertiary);
    text-decoration: none;
    border-left: 1px solid var(--border-subtle);
    transition: all 0.15s ease;
}

[data-layout="ontology"] > aside > menu > li > a:hover {
    color: var(--text-secondary);
}

[data-layout="ontology"] > aside > menu > li > a[aria-current="true"] {
    color: var(--text-primary);
    border-left-color: var(--accent-cyan);
}

/* ============================================
   PROMO/AD CARD
   ============================================ */
[data-layout="ontology"] > aside > article {
    flex-shrink: 0;
    margin: 0 0 20px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
}

[data-layout="ontology"] > aside > article > small {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    margin-bottom: 16px;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: var(--bg-primary);
    border-radius: 4px;
}

[data-layout="ontology"] > aside > article > strong {
    display: block;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-primary);
}

[data-layout="ontology"] > aside > article > p {
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-tertiary);
}

[data-layout="ontology"] > aside > article > a {
    display: block;
    width: 100%;
    margin-top: 16px;
    padding: 10px 12px;
    font-size: 12px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

[data-layout="ontology"] > aside > article > a:hover {
    opacity: 0.9;
}

/* ============================================
   THINGS DIRECTORY VIEW
   ============================================ */
[data-layout="ontology"] > main > section > div {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

[data-layout="ontology"] > main > section > div > article {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    transition: all 0.15s ease;
}

[data-layout="ontology"] > main > section > div > article:hover {
    border-color: var(--border-default);
    background: var(--bg-elevated);
}

[data-layout="ontology"] > main > section > div > article > a {
    display: flex;
    flex-direction: column;
    padding: 20px;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

[data-layout="ontology"] > main > section > div > article > a > span {
    font-size: 28px;
    margin-bottom: 12px;
}

[data-layout="ontology"] > main > section > div > article > a > header > h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

[data-layout="ontology"] > main > section > div > article > a > header > p {
    font-size: 13px;
    color: var(--text-tertiary);
    line-height: 1.5;
}

[data-layout="ontology"] > main > section > div > article > a > footer {
    display: flex;
    gap: 16px;
    margin-top: auto;
    padding-top: 16px;
}

[data-layout="ontology"] > main > section > div > article > a > footer > data {
    font-size: 12px;
    color: var(--text-quaternary);
}

/* Pagination */
[data-layout="ontology"] > main > nav[aria-label="Pagination"] a {
    color: var(--text-tertiary);
    text-decoration: none;
}

[data-layout="ontology"] > main > nav[aria-label="Pagination"] a:hover {
    color: var(--text-primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1280px) {
    [data-layout="ontology"] {
        grid-template-columns: var(--sidebar-width) 1fr;
    }
    [data-layout="ontology"] > aside {
        display: none;
    }
}

@media (max-width: 768px) {
    [data-layout="ontology"] {
        display: block;
    }

    [data-layout="ontology"] > header {
        display: flex;
    }

    [data-layout="ontology"] > nav {
        transform: translateX(-100%);
        z-index: 200;
    }

    [data-layout="ontology"] > nav.animate {
        transition: transform 0.3s ease;
    }

    [data-layout="ontology"] > nav.open {
        transform: translateX(0);
    }

    [data-layout="ontology"] > main {
        padding: 88px 20px 40px;
    }

    [data-layout="ontology"] > main h1 {
        font-size: 28px;
    }

    [data-layout="ontology"] > aside {
        display: block;
        position: static;
        width: 100%;
        height: auto;
        padding: 0 20px 40px;
        border: none;
    }

    [data-layout="ontology"] > aside > h2,
    [data-layout="ontology"] > aside > menu {
        display: none;
    }

    [data-layout="ontology"] > aside::before {
        content: '';
        display: block;
        height: 1px;
        margin-bottom: 32px;
        background: var(--border-subtle);
    }

    [data-layout="ontology"] > aside > article {
        display: block;
        margin: 0;
        padding: 20px;
    }

    [data-layout="ontology"] > aside > article > small {
        margin-bottom: 20px;
    }

    [data-layout="ontology"] > aside > article > strong {
        font-size: 20px;
    }

    [data-layout="ontology"] > aside > article > p {
        font-size: 14px;
        margin-top: 10px;
    }

    [data-layout="ontology"] > aside > article > a {
        margin-top: 20px;
        padding: 12px 16px;
        font-size: 14px;
    }
}