/* ===========================================
   CSS VARIABLES (Design Tokens)
   =========================================== */

:root {
    /* COLOR PALETTE */
    
    /* Core neutrals */
    --color-dark: #333;
    --color-muted: #666;
    --color-subtle: #999;
    --color-faint: #AAA;
    --color-bg-alt: #F2F2F2;
    
    /* Primary accent (links) */
    --color-link: #0066BB;
    --color-link-underline: #0066BB55;
    --color-link-underline-hover: #0066BBFF;
    --color-link-muted: #006699;  /* Darker blue for secondary links */
    
    /* Namespace/prefix colors */
    --color-dannet: #901a1e;
    --color-w3c: #55f;
    --color-meta: #019fa1;
    --color-ontolex: #df7300;
    --color-wordnet: #387111;
    
    /* OPACITY SCALE */
    --opacity-interactive: 0.8;       /* Default state for clickable elements */
    --opacity-interactive-hover: 1;   /* Hover state */
    --opacity-decorative: 0.33;       /* Decorative flourishes (h2 ornaments, brackets) */
    --opacity-muted: 0.6;             /* Language tags, subscripts */
    --opacity-overlay-light: 0.25;    /* Light overlay for hover states on dark backgrounds */
    --opacity-fullscreen-icon: 0.75;  /* Full-screen mode inverted icons */
    
    /* BORDERS */
    --border-opacity-normal: 0.67;
    --border-opacity-subtle: 0.33;
    --border-opacity-very-subtle: 0.1;

    --normal-border: 1px solid rgba(0,0,0,var(--border-opacity-normal));
    --subtle-border: 1px solid rgba(0,0,0,var(--border-opacity-subtle));
    --very-subtle-border: 1px solid rgba(0,0,0,var(--border-opacity-very-subtle));

    --border-radius-s: 2px;
    
    /* SHADOWS */
    --shadow-card-subtle: 0 0 4px rgba(0,0,0,0.25);
    --shadow-nav: 0 0 12px rgba(0,0,0,0.67);
    --shadow-heading: 0 8px 12px rgba(0,0,0,0.2);
    
    /* TYPOGRAPHY */
    --font-family: Georgia, serif;
    --letter-spacing-base: 0.2ch;
    --line-height-prose: 1.6;
    
    /* Font size scale */
    --font-size-xs: 12px;
    --font-size-s: 14px;
    --font-size-m: 16px;
    --font-size-m-l: 18px;  /* Bridge between medium and large */
    --font-size-m-xl: 20px; /* Another step toward large */
    --font-size-l: 24px;
    --font-size-xl: 32px;
    --font-size-xxl: 48px;
    
    /* CONTENT WIDTH */
    --content-max-width: 110ch;        /* Main article content */
    --content-max-width-narrow: 90ch;  /* Document-style articles */
    
    /* SPACING */
    --spacing-xxs: 2px;
    --spacing-xs: 4px;
    --spacing-s: 8px;
    --spacing-m: 12px;
    --spacing-l: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-prefix: 6px;
    
    /* TRANSITIONS */
    --transition-fast: 0.1s;
    --transition-base: 0.2s;
    --transition-slow: 0.33s;
    --transition-slower: 0.66s;
    
    /* BACKGROUNDS */
    --bg-texture: url(/images/exclusive-paper.png);
    --bg-dark: var(--color-dark) var(--bg-texture);
    
    /* INTERACTIVE ELEMENT SIZING */
    --icon-size: 32px;
    
    /* LAYOUT OFFSETS (for viewport calculations) */
    --layout-search-mobile-offset: 96px;       /* Approximate offset for mobile keyboard in search */
    --layout-search-horizontal-offset: 92px;   /* Left padding + icon area in search */
    --layout-fullscreen-header: 104px;         /* Header height in full-screen diagram mode */
    --layout-responsive-offset: 45px;          /* Additional offset at responsive breakpoint */
    
    /* Z-INDEX SCALE */
    --z-base: 1;
    --z-error: 10;
    --z-help: 66;
    --z-search: 99;
    --z-modal: 10000;
}


/* ===========================================
   KEYFRAME ANIMATIONS
   =========================================== */

@keyframes fade-in {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes point {
    from { transform: translateX(4px); }
    to { transform: translateX(0); }
}

/* Loading indicator - title letters pulse when fetching.
   62% of 1.6s = ~1s idle before pulse; matches letter-spacing transition delay. */
@keyframes title-pulse {
    0%, 62% { transform: scale(1); }
    75% { transform: scale(1.3); }
    88%, 100% { transform: scale(1); }
}


/* ===========================================
   BASE & RESET
   =========================================== */

/* Apply hyphenation to text-containing elements */
p,
h1, h2, h3,
td, th,
dt, dd,
li,
span.set__content,
span.prefix,
.qname {
    hyphens: auto;
}

html, body {
    padding: 0;
    margin: 0;
    height: 100%;
    background: #fff var(--bg-texture);
}

#app {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    color: var(--color-dark);
    font-family: var(--font-family);
    letter-spacing: var(--letter-spacing-base);
}

button {
    cursor: pointer;
}

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

/*  Dataset download links are styled with a prefixed icon.
    a.rdf-uri is purposefully left out as it would clash with the established
    use of < ... > to display these. */
a[href^="/export/"]:not(.rdf-uri)::before,
a[href^="/schema/"]:not(.rdf-uri)::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: middle;
    margin-right: 0.33em;

    /* Inherit the colour of the text. */
    background-color: currentColor;
    mask-image: url('/images/download.svg');
    mask-size: contain;
    mask-repeat: no-repeat;
}

/* TODO: span.set markup is inconsistent - sometimes inside <a>, sometimes not.
   Unifying this would allow a simpler selector (see rdf.cljc). */
a:hover,
a:hover span.set > * {
    text-decoration: underline;
}


/* ===========================================
   TYPOGRAPHY
   =========================================== */

p {
    line-height: var(--line-height-prose);
}

h1, h2, h3 {
    font-weight: normal;
    font-variant: small-caps;
    letter-spacing: var(--letter-spacing-base);
    filter: drop-shadow(var(--shadow-heading));
}

h1 {
    display: flex;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin: var(--spacing-m) auto var(--spacing-m) auto;
    word-break: normal;
}

h1 sub {
    font-size: 50%;
}

h1 sup {
    user-select: none;
    margin-left: 0.4ch;
    vertical-align: top;
    font-size: 60%;
    opacity: var(--opacity-muted);
    text-decoration: none;
}

h1 img {
    width: clamp(80px, 33vw, 420px);
}

h1 span.prefix {
    align-self: center;
    transition: background var(--transition-slower);
    margin: calc(-1 * var(--spacing-s)) var(--spacing-s) 0 0; /* Negative top pulls badge closer to heading */
    padding: var(--spacing-prefix) var(--spacing-m);
    border-radius: 3px;

    letter-spacing: var(--spacing-prefix);
    padding-right: var(--spacing-prefix); /* account for letter-spacing */
}

h2 {
    font-size: var(--font-size-xl);
    text-align: center;
    margin: var(--spacing-xxl) 0 var(--spacing-l) 0;
}

h2::before {
    content: "⊱ ";
    opacity: var(--opacity-decorative);
}

h2::after {
    content: " ⊰";
    opacity: var(--opacity-decorative);
}

h3 {
    font-size: var(--font-size-m-l);
    text-align: left;
    border-bottom: var(--subtle-border);
    margin: var(--spacing-xxl) 0 var(--spacing-m) 0;
    padding: 0 0 var(--spacing-xs) 0;
}

sub {
    font-size: 70%;
    opacity: var(--opacity-muted);
    text-decoration: none;
}

code {
    background: rgba(255,255, 255,0.67);
    color: black;
    text-shadow: none !important;
    padding: var(--spacing-xxs) var(--spacing-xs);
    border-radius: var(--border-radius-s);
    font-size: var(--font-size-s);
    font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
    font-weight: normal;
}

pre code {
    text-shadow: none !important;
    padding: 0;
    background: none;
    color: white;
}
pre {
    text-shadow: none !important;
    color: white;
    box-shadow:
      inset 0 0 4px rgba(255,255,255,0.33),
      0 0 4px rgba(0,0,0,0.25);
    background: rgba(0,0,0,0.85);
    padding: var(--spacing-m);
    margin: var(--spacing-xl);
    overflow: scroll;
    border-radius: var(--border-radius-s);
}

pre.message {
    color: black;
    background: transparent;
    padding: 0;
}

/* Definition lists */
dl {
    margin: 0;
    padding: 0;
}

dt {
    font-size: var(--font-size-m-l);
    font-weight: normal;
    padding: var(--spacing-m) var(--spacing-m) 0 var(--spacing-m);
    margin: 0;
    letter-spacing: var(--letter-spacing-base);
    font-variant: small-caps;
    word-break: normal;
}

dd {
    margin: var(--spacing-m) 0 var(--spacing-l) 0;
    padding: var(--spacing-s) var(--spacing-m) var(--spacing-m) var(--spacing-m);
    font-size: var(--font-size-s);
}

dd + dt {
    padding-top: var(--spacing-m);
}

dl.search-results dt .dannet * {
    color: var(--color-dark);
}

dl.search-results dt .set__content {
    font-size: var(--font-size-xl);
    text-align: left;
}

dl.search-results dt .set__content sub {
    font-size: var(--font-size-m);
}

dl.search-results > div {
    transition: transform var(--transition-fast);
    cursor: pointer;
    padding: var(--spacing-xl) var(--spacing-l);
    margin-bottom: var(--spacing-xxl);
    background-color: rgba(255, 255, 255, 1);
    border: var(--normal-border);
    box-shadow: var(--shadow-card-subtle);
}

dl.search-results > div:hover,
dl.search-results > div:focus-visible {
    transform: scale(102%);
}

/* Reset dt/dd spacing — handled by the wrapping div. */
dl.search-results dt {
    padding: 0;
    margin: 0;
}

/* Cancel global dd + dt rule inside result divs. */
dl.search-results dd + dt {
    padding-top: 0;
}

dl.search-results dd {
    padding: 0;
    margin: var(--spacing-l) 0 0 var(--spacing-m); /* reset global dd margins */
}

ul.synset-summary {
    line-height: 1.5;
    list-style-type: none;
    max-width: fit-content;
    padding:
        var(--spacing-xs)
        var(--spacing-xs)
        var(--spacing-xs)
        var(--spacing-l);
    font-size: var(--font-size-m);
    margin: 0;
    border-left: 6px solid var(--color-dannet);
}

/* TODO: look at fixing/normalizing the HTML structure requiring these weird CSS rules */
.rdf-resource ul.synset-summary { box-shadow: none; }
section.subentity:has(ul.synset-summary) {
    padding: var(--spacing-xl);
    background-color: rgba(255, 255, 255, 1);
    border: var(--normal-border);
    box-shadow: var(--shadow-card-subtle);
    margin: 0 auto;
}

ul.synset-summary> li:has(abbr.pos-label) {
    display: flex;
}

dl.search-results div:nth-child(5n+1) dd ul { border-left-color: var(--color-dannet); }
dl.search-results div:nth-child(5n+2) dd ul { border-left-color: var(--color-meta); }
dl.search-results div:nth-child(5n+3) dd ul { border-left-color: var(--color-ontolex); }
dl.search-results div:nth-child(5n+4) dd ul { border-left-color: var(--color-w3c); }
dl.search-results div:nth-child(5n+5) dd ul { border-left-color: var(--color-wordnet); }

/* Resets some for search results. */
dl.search-results dt .set__left-bracket,
dl.search-results dt .set__right-bracket,
dl.search-results a::after,
ul.synset-summary .set__left-bracket,
ul.synset-summary .set__right-bracket,
ul.synset-summary a::after {
    display: none;
}

/* Ordered lists */
ol {
    margin: 0;
}

ol,
ol.two-digits,
ol.two-digits + details > summary {
    padding-left: var(--spacing-l);
}

ol.three-digits,
ol.three-digits + details > summary {
    padding-left: var(--spacing-xl);
}

ol.four-digits,
ol.four-digits + details > summary {
    padding-left: var(--spacing-xxl);
}

ol.five-digits,
ol.five-digits + details > summary {
    padding-left: 52px;
}

li {
    padding: 0;
}

li + li {
    padding-top: 1.5ch;
}

li::marker {
    color: var(--color-subtle);
    font-size: var(--font-size-xs);
}

/* Details/summary (collapsible sections) */
details {
    margin: var(--spacing-s) 0 0 0;
    border-top: 1px solid transparent;
}

details summary {
    cursor: pointer;
    border-radius: var(--border-radius-s);
    color: rgba(0,0,0,var(--opacity-interactive));
    font-size: var(--font-size-xs);
    padding: var(--spacing-s) 0 var(--spacing-s) var(--spacing-xl);
}

details summary:hover {
    text-decoration: underline;
    text-underline-offset: var(--spacing-xs);
}

details[open] {
    border-top: var(--very-subtle-border);
    padding-bottom: var(--spacing-m);
}

summary + ol {
    margin-top: var(--spacing-m);
}

/* Subheadings and notes */
.subheading {
    text-align: center;
    font-size: var(--font-size-m-l);
    margin: var(--spacing-l) 0;
    color: var(--color-muted);
}

label.subheading {
    display: block;
}

label.subheading select {
    font-size: var(--font-size-m-l);
    padding: var(--spacing-xxs) var(--spacing-prefix);
}

p.note {
    text-align: center;
    font-style: italic;
    font-size: var(--font-size-s);
    margin: var(--spacing-l) 0 0 0;
    color: var(--color-muted);
}

p.note + p.note {
    margin-top: var(--spacing-s);
}

p.note strong {
    color: var(--color-dark);
    vertical-align: baseline;
    margin-right: var(--spacing-xs);
}


/* ===========================================
   LAYOUT
   =========================================== */

#content {
    flex-grow: 1;
    overflow-y: auto;

    padding: var(--spacing-m);

    /* Center content & footer horizontally. */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

#content.full-screen {
    padding: 0;
    background: white;
}

#content.full-screen hr {
    border-top: var(--subtle-border);
}

/* This essentially works like sharpening/emboss effect on non-white text. */
#content *:not(.prefix) {
    text-shadow: 1px 0px rgba(255,255,255,0.8);
}

main {
    display: flex;
    justify-content: center;
    flex-grow: 1;
}

/* For table to inherit. */
main > article {
    width: 100%;
}

article {
    max-width: var(--content-max-width);
}

article > section:last-child {
    margin-bottom: var(--spacing-m);
}

/* Document-style articles (e.g. about page) */
article.document {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: var(--content-max-width-narrow);
    font-size: var(--font-size-m-l);
}

article.document > div {
    padding: var(--spacing-m);
}

article.document > div > ul:first-child {
    display: flex;
    flex-direction: row;
    justify-content: center;

    list-style: none;
    padding: var(--spacing-l) var(--spacing-m);
    margin: 0 0 var(--spacing-xl) 0;
    gap: var(--spacing-l);

    border: var(--very-subtle-border);
    background: var(--bg-texture);
    border-radius: var(--border-radius-s);
}

article.document > div > ul:first-child li {
    padding: 0;
}

/* Cycle colours of the nav tabs above and lists of links. */
article.document > div > ul:first-child > li:nth-of-type(5n+1) a,
article.document > div > ul:not(:first-child) > li > a:nth-of-type(5n+1) {
    color: var(--color-w3c);
    text-decoration-color: var(--color-w3c);
}
article.document > div > ul:first-child > li:nth-of-type(5n+2) a,
article.document > div > ul:not(:first-child) > li > a:nth-of-type(5n+2) {
    color: var(--color-meta);
    text-decoration-color: var(--color-meta);
}
article.document > div > ul:first-child > li:nth-of-type(5n+3) a,
article.document > div > ul:not(:first-child) > li > a:nth-of-type(5n+3) {
    color: var(--color-ontolex);
    text-decoration-color: var(--color-ontolex);
}
article.document > div > ul:first-child > li:nth-of-type(5n+4) a,
article.document > div > ul:not(:first-child) > li > a:nth-of-type(5n+4) {
    color: var(--color-dannet);
    text-decoration-color: var(--color-dannet);
}
article.document > div > ul:first-child > li:nth-of-type(5n+5) a,
article.document > div > ul:not(:first-child) > li > a:nth-of-type(5n+5) {
    color: var(--color-wordnet);
    text-decoration-color: var(--color-wordnet);
}

/* Reset the cycle for single hyperlinks. */
article.document > div > ul:not(:first-child) > li > a:first-of-type:last-of-type {
    color: var(--color-link);
}

article.document h1 {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-xl);
}

article.document p {
    margin: 1.5em 0 1.5em 0;
}

article.document li > a {
    font-weight: bold;
}

article.document a {
    transition: text-decoration-color var(--transition-base);
    text-decoration: underline;
    text-decoration-color: var(--color-link-underline);
    text-underline-offset: var(--spacing-xs);
}

article.document a:hover {
    text-decoration-color: var(--color-link-underline-hover);
}

/* Styles affecting images in the root of the document. */
article.document > div > img,
article.document > div > p > img,
article.document > div > p > a > img {
    max-width: 80%;
    border: var(--subtle-border);
    box-shadow: var(--shadow-card-subtle);

    /* Centering */
    display: block;
    margin: 0 auto;
}

article.document ul {
    line-height: var(--line-height-prose);
    padding: 0 var(--spacing-xl);
}

article.document li {
    padding: 0 0 0 var(--spacing-s);
    margin: 0;
}

article.document li + li {
    padding-top: var(--spacing-s);
}

article.document li strong:first-child {
    text-transform: uppercase;
    margin-right: var(--spacing-xs);
}

article.document blockquote { margin: var(--spacing-xl) ;}
article.document blockquote p {
    padding: var(--spacing-l) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    border: var(--very-subtle-border);
    background: var(--bg-texture);
    border-radius: var(--border-radius-s);
}

article.document blockquote > p > strong:first-child {
    text-transform: uppercase;
}

article.search {
    width: fit-content;
}

/* Search results article */
article.search table.attr-val + table.attr-val {
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-l);
}

header.page-header,
footer.page-footer {
    text-align: center;
}

header.page-header {
    margin-bottom: var(--spacing-xl);
}

footer.page-footer {
    padding: var(--spacing-l) 0 var(--spacing-m) 0;
    margin-top: var(--spacing-s);
}

footer.page-footer p {
    font-size: var(--font-size-s);
    margin: var(--spacing-m);
}

hr {
    border: none;
    border-top: var(--subtle-border);
    width: 100%;
    margin: 0 0 var(--spacing-xl) 0;
}

aside.notes {
    margin-top: var(--spacing-xl);
}


/* ===========================================
   NAVIGATION
   =========================================== */

nav#main-nav {
    transition: background var(--transition-slow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-s);
    background: var(--bg-dark);
    box-shadow: var(--shadow-nav);
    border: 1px solid transparent;
    border-right: var(--normal-border);
    z-index: var(--z-base);
    gap: var(--spacing-s);
}

nav#main-nav a.title {
    /* letter-spacing transition has 1s delay to match loading animation */
    transition: opacity var(--transition-base), transform var(--transition-base), letter-spacing var(--transition-slow) ease-in-out 1s;
    color: white;
    user-select: none;
    writing-mode: vertical-rl;
    text-orientation: sideways;
    font-size: var(--font-size-l);
    line-height: var(--icon-size); /* centre align */
    margin: auto 0;
    font-variant: small-caps;
    justify-self: center;
    letter-spacing: 4px;
}

/* Shared styles for nav icons */
nav#main-nav .nav-icon {
    transition: opacity var(--transition-base), transform var(--transition-base);
    background-repeat: no-repeat;
    background-position: center;
}

nav#main-nav a.title:hover,
nav#main-nav a.title:focus-visible,
nav#main-nav .nav-icon:hover,
nav#main-nav .nav-icon:focus-visible {
    transform: scale(110%);
}

nav#main-nav a.title span {
    display: inline-block;
    color: inherit; /* Override namespace-specific colors */
}

nav#main-nav select.language {
    /* Remove default styling */
    color: transparent;
    border: none;
    appearance: none;

    cursor: pointer;
    width: var(--icon-size);
    height: var(--icon-size);
    font-size: var(--font-size-m-xl);
    background-image: url(/images/globe.svg);
    background-color: transparent;
    background-size: 28px; /* Compensates for internal SVG padding to match 26px visual size of other nav icons */
}

nav#main-nav a.sparql-link {
    cursor: pointer;
    width: var(--icon-size);
    height: var(--icon-size);
    background-image: url("/images/sparql-icon.svg");
    background-size: 26px;
}

nav#main-nav:has(search.search-active) a.sparql-link {
    margin-top: calc(var(--icon-size) + var(--spacing-m));
}

nav#main-nav button.synset-details {
    border: none;
    background-color: transparent;
    background-image: url("/images/minus.svg");
    background-size: 26px;
    width: var(--icon-size);
    height: var(--icon-size);
    padding: var(--spacing-xs);
}

nav#main-nav button.synset-details.toggled {
    background-image: url("/images/plus.svg");
}

nav#main-nav.full-screen {
    background: white;
    box-shadow: none;
}

/* Darken the icons in the nav bar in full-screen mode. */
nav#main-nav.full-screen a.title,
nav#main-nav.full-screen .nav-icon {
    filter: invert(1);
    opacity: var(--opacity-fullscreen-icon);
}

/* Loading indicator - animates title letters when fetching */
#content.fetching {
    cursor: progress;
}

/* nav precedes #content in DOM, so :has(~) checks following sibling state */
nav#main-nav:has(~ #content.fetching) a.title {
    letter-spacing: 8px;
}

nav#main-nav:has(~ #content.fetching) a.title span {
    animation: title-pulse 1.6s ease-in-out infinite;
}

/* Staggered animation delays create a wave effect across the 6 letters */
nav#main-nav:has(~ #content.fetching) a.title span:nth-child(2) { animation-delay: 0.1s; }
nav#main-nav:has(~ #content.fetching) a.title span:nth-child(3) { animation-delay: 0.2s; }
nav#main-nav:has(~ #content.fetching) a.title span:nth-child(4) { animation-delay: 0.3s; }
nav#main-nav:has(~ #content.fetching) a.title span:nth-child(5) { animation-delay: 0.4s; }
nav#main-nav:has(~ #content.fetching) a.title span:nth-child(6) { animation-delay: 0.5s; }


/* ===========================================
   SEARCH
   =========================================== */

search {
    display: flex;
    flex-direction: column;
    margin: -5px 0 0 -5px;
    padding: var(--spacing-xs);
    width: var(--icon-size);
    min-height: var(--icon-size); /* Tap target matches search icon */
    background: url(/images/search.svg) no-repeat 5px 5px / var(--icon-size);
    z-index: var(--z-search);
}

search.search-active {
    position: fixed;
    transition: background-color var(--transition-slow);
    background: rgba(0,0,0,0.66) url(/images/back.svg) no-repeat var(--spacing-m) 20px / 42px;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding-top: 16px;
}

search:not(.search-active) {
    cursor: pointer;
    transition: transform var(--transition-base);
}

search:not(.search-active):hover {
    opacity: var(--opacity-interactive-hover);
    transform: scale(110%);
}

search form {
    display: flex;
}

search input[role=combobox] {
    user-select: none;
    font-size: var(--font-size-m); /* >= 16px prevents iOS Safari from zooming on focus */
    color: white;
    border: none;
    border-radius: var(--border-radius-s);
    width: var(--icon-size);
    min-height: var(--icon-size); /* Ensures clickable area matches search icon size */
    padding: 0;
    opacity: 0;
}

search.search-active input[role=combobox] {
    flex-grow: 1;
    font-size: var(--font-size-xl);
    margin-left: 56px;
    color: var(--color-dark);
    opacity: 0.9;
    padding: var(--spacing-xxs) var(--spacing-s);
    position: sticky; /* Keeps search input visible at top when scrolling results */
    top: var(--spacing-s);
}

search input[type=submit] {
    transition: transform var(--transition-base);
    letter-spacing: 2px;
    margin: 0 var(--spacing-xs);
}

search.search-active input[type=submit] {
    display: revert; /* Unhide when search is active. */
    position: static;
    opacity: var(--opacity-interactive-hover);
    transition: color var(--transition-base);
    min-width: 64px;
    height: 52px;
    padding: 36px var(--spacing-m) 2px var(--spacing-m);
    font-size: var(--font-size-xs);
    border: none;
    color: rgba(255,255,255,var(--opacity-decorative));
    cursor: pointer;
    background: url(/images/search.svg) no-repeat center 2px / 36px 36px;
}

search.search-active input[type=submit]:hover {
    color: rgba(255,255,255,1);
}

search.search-active output {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    padding-bottom: var(--spacing-xxl); /* Avoid clipping final list element. */
}

search.search-active ul {
    display: block;
    animation: fade-in var(--transition-slow);
    margin: 0;
    /* almost 100 full screen of bottom padding (mobile keyboard fix) */
    padding: var(--spacing-s) 0 calc(100vh - var(--layout-search-mobile-offset)) 52px;
    overflow-y: auto;
    height: 100%;
}

/* larger dismiss area when no options are available */
search.search-active ul:empty {
    padding-bottom: 0;
}

search.search-active ul li {
    color: white;
    cursor: pointer;
    list-style-type: none;
    font-size: var(--font-size-m-xl);

    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;

    margin: 0 var(--spacing-xs);
    padding: var(--spacing-s);
    width: calc(100% - var(--layout-search-horizontal-offset));
}

search.search-active ul li:hover,
search.search-active ul li:focus-visible {
    background: rgba(255,255,255,var(--opacity-overlay-light));
}

/* Disable scrolling when search is focused (prevents iOS Firefox scroll issue) */
nav:has(search.search-active) ~ #content {
    overflow: hidden;
}

/* Darken the search icon in full-screen mode. */
nav.full-screen search:not(.search-active) {
    filter: invert(1);
    opacity: var(--opacity-fullscreen-icon);
}


/* ===========================================
   TABLES
   =========================================== */

article.document table,
table.attr-val,
table.sparql-results {
    font-size: var(--font-size-m);
    border-collapse: collapse;
    border: var(--normal-border);
    box-shadow: var(--shadow-card-subtle);
    width: 100%;
}

article.document table {
    width: fit-content;
    margin: 0 auto;
}

table.attr-val col:nth-child(2) {
    min-width: 12ch;
}

table.attr-val col:nth-child(3) {
    width: 80ch;
}

table.attr-val.attr-val--nested {
    border: var(--subtle-border);
    box-shadow: var(--shadow-card-subtle);
}

/* Border resets for inner tables */
table.attr-val.attr-val--nested td.attr-prefix,
table.attr-val.attr-val--nested td.attr-name {
    border-top: none;
    border-right: none;
}

td, th {
    padding: var(--spacing-m);
    vertical-align: top;
}

th {
    font-weight: bold;
    font-variant: small-caps;
    font-size: var(--font-size-m);
    border-bottom: var(--very-subtle-border);
    background:var(--bg-texture);
    text-align: left;
    text-shadow: none !important;
}

td.attr-prefix {
    padding-right: 0;
    text-align: right;
    width: 1px;
    white-space: nowrap;
}

td.attr-name {
    padding-left: 0;
    border-right: 1px solid rgba(0,0,0,var(--opacity-decorative));
}

td.attr-prefix,
td.attr-name {
    background: var(--bg-texture);
}

tr + tr td.attr-prefix,
tr + tr td.attr-name {
    border-top: var(--very-subtle-border);
}

tr:nth-child(odd),
tr tr:nth-child(even) {
    background-color: white;
}

tr:nth-child(even),
tr tr:nth-child(odd) {
    background-color: var(--color-bg-alt);
}

/* Fix alignment of prefix+name table cells with tall names, e.g. synsets. */
.attr-combo > span {
    vertical-align: top;
}

table.sparql-results {
    min-width: 100%;
    width: auto;
}

th.sparql-results__count,
td.sparql-results__count {
    text-align: right;
    width: 1%;
    white-space: nowrap;
}


/* ===========================================
   RDF & PREFIXES
   =========================================== */

.prefix {
    text-shadow: none;
}

span.prefix {
    background: var(--bg-dark);
    font-variant: small-caps;
    color: rgba(255,255,255,255);
    border-radius: var(--border-radius-s);
    border: var(--very-subtle-border);
    padding: var(--spacing-xxs) var(--spacing-prefix);
    margin-right: var(--spacing-prefix);

    letter-spacing: 1px;
    padding-right: 4px; /* account for letter-spacing */
}

span.prefix + a,
span.hidden + a {
    display: inline-block;
}

/* Truncatable prefix - shows ellipsis, expands on hover/focus */
span.prefix.truncatable {
    display: inline-block;
    max-width: 5ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: top;
    cursor: zoom-in;
}

span.prefix.truncatable:hover,
span.prefix.truncatable:focus {
    max-width: unset;
    overflow: visible;
    text-overflow: unset;
}

span.prefix.truncatable:focus-visible {
    outline: 2px solid var(--color-link);
    outline-offset: 1px;
}

span.prefix__sep {
    display: none;
}

/* Namespace-specific prefix colors */
.prefix.dannet,
nav#main-nav.prefix.dannet {
    background-color: var(--color-dannet);
}

.prefix.w3c,
nav#main-nav.prefix.w3c {
    background-color: var(--color-w3c);
}

.prefix.meta,
nav#main-nav.prefix.meta {
    background-color: var(--color-meta);
}

.prefix.ontolex,
nav#main-nav.prefix.ontolex {
    background-color: var(--color-ontolex);
}

.prefix.wordnet,
nav#main-nav.prefix.wordnet {
    background-color: var(--color-wordnet);
}

/* Namespace-specific text colors */
.dannet,
.dannet * {
    color: var(--color-dannet);
}

.w3c,
.w3c * {
    color: var(--color-w3c);
}

.meta,
.meta * {
    color: var(--color-meta);
}

.ontolex,
.ontolex * {
    color: var(--color-ontolex);
}

.wordnet,
.wordnet * {
    color: var(--color-wordnet);
}

/* Unknown namespace */
.prefix.unknown {
    background-color: white;
    border: 1px dashed var(--color-subtle);
    color: var(--color-subtle);
}

.unknown {
    color: var(--color-dark);
}

/* QName display */
.qname {
    display: inline-flex;
    /* TODO: doesn't center properly with multiline names + lang tag... */
    align-items: center;
}

.qname a .set {
    vertical-align: middle;
}

/* RDF URI display */
header > .rdf-uri {
    font-size: var(--font-size-s);
    font-style: italic;
}

header > .rdf-uri .rdf-uri__prefix,
header > .rdf-uri .rdf-uri__name {
    color: var(--color-link-muted);
}

header > .rdf-uri .rdf-uri__prefix {
    opacity: var(--opacity-muted);
}

header > .rdf-uri .rdf-uri__name {
    font-weight: bold;
}

.rdf-uri::before,
.rdf-uri::after {
    opacity: 0.3;
}

.rdf-uri::before {
    content: "<";
    margin-right: 2px;
}

.rdf-uri::after {
    content: ">";
    margin-left: 2px;
}

/* Language tags shown as superscript after lang-attributed elements. */
[lang]:not(footer, footer *, h1 span, article)::after {
    content: attr(lang);
    margin-left: 0.4ch;
    vertical-align: top;
    font-size: 60%;
    opacity: var(--opacity-muted);
    text-decoration: none;
    font-variant: small-caps;
}


/* ===========================================
   SYNSETS
   =========================================== */

.set__word {
    white-space: nowrap;
}

span.set {
    display: inline-flex;
    flex-basis: 100%;
    vertical-align: baseline;
}

.set__content {
    text-align: center;
    /* TODO: figure out a way to make ontotype big sets work better
             that doesn't rely on line-height being higher than 1
    */
    line-height: 1;
}

span.set__left-bracket,
span.set__right-bracket {
    min-width: 1ch;
    background-size: auto 100%;
    background-repeat: no-repeat;
    opacity: 0.4;
    transition: opacity var(--transition-fast);
}

span.set__left-bracket {
    background-image: url(/images/set-left.svg);
    background-position: left;
    margin-right: 0.5ch;
}

span.set__right-bracket {
    background-image: url(/images/set-right.svg);
    background-position: right;
    margin-left: 0.5ch;
}

span.marker {
    margin-right: var(--spacing-xs);
    color: var(--color-muted);
    cursor: help;
    vertical-align: baseline;
}


/* ===========================================
   RADIAL DIAGRAM
   =========================================== */

.synset-radial-container {
    transition: font-size var(--transition-base);
    padding: var(--spacing-m);
    height: 100%;

    background: white;
    border: var(--normal-border);
    box-shadow: var(--shadow-card-subtle);
}

#content.full-screen .synset-radial-container {
    border: none;
    box-shadow: none;
    display: flex;
    flex-direction: column;
}

#content.full-screen .radial-tree {
    flex-grow: 1;
}

#content.full-screen > main > article {
    max-width: none;
    width: fit-content;
    flex-grow: 1;
}

#content.full-screen footer.page-footer {
    padding: var(--spacing-xl) var(--spacing-m) var(--spacing-xxl) var(--spacing-m);
}

.synset-radial-container .synset-radial__header {
    display: flex;
    align-items: center;
    border-bottom: var(--subtle-border);
    padding: 0 0 var(--spacing-m) 0;
    margin-bottom: var(--spacing-m);
}

.synset-radial-container aside.synset-radial__metadata {
    display: flex;
    align-items: center;
    border-right: var(--subtle-border);
    margin: 0;
    padding-right: var(--spacing-m);
    max-width: 20vw;
}

#content:not(.full-screen) aside.synset-radial__metadata,
#content:not(.full-screen) footer.synset-radial__footer {
    display: none;
}

.synset-radial-container footer.synset-radial__footer {
    border-top: var(--subtle-border);
    margin-top: var(--spacing-m);
    padding-top: var(--spacing-l);
}

abbr.pos-label {
    color: var(--color-dark);
    font-variant: small-caps;
    font-weight: bold;
    padding: 0 var(--spacing-s) 0 0;
    margin-right: var(--spacing-m);
    border-right: var(--subtle-border);
}

.synset-radial-container .synset-radial__definition {
    margin: 0 auto;
    display: flex;
    align-items: center;
}

/* Radial tree layout */
.radial-tree {
    display: flex;
    align-items: stretch;
    height: 100%;
}

figure.radial-tree-diagram,
svg.radial-tree-diagram__svg {
    /* Always make sure the diagram is fully visible. */
    max-height: calc(80vh - var(--spacing-l));
}

figure.radial-tree-diagram {
    flex-grow: 1; /* Fix width in Safari. */
    text-align: center;
    display: flex;
}

svg.radial-tree-diagram__svg {
    /*  The viewBox keeps the diagram the same, but additional width allows for
        certain long labels to avoid clipping. */
    width: 100%;
}

#content.full-screen figure.radial-tree-diagram,
#content.full-screen svg.radial-tree-diagram__svg {
    /* Always make sure the diagram to is fully visible. */
    max-height: calc(100vh - var(--layout-fullscreen-header));
}

/* More targeted transitions - only animate colors, not font sizes */
figure.radial-tree-diagram * {
    transition: fill var(--transition-base), stroke var(--transition-base), opacity var(--transition-base);
}

/* Radial tree legend */
fieldset.radial-tree-legend {
    display: flex;
    flex-direction: column;
    justify-content: center;

    /* reset fieldset vals*/
    padding: 0;
    margin: 0;
    border: none;

    border-left: var(--subtle-border);
}

fieldset.radial-tree-legend > button.icon {
    align-self: flex-end;
}

fieldset.radial-tree-legend ul {
    min-width: fit-content;
    margin: auto 0;

    list-style: none;
    padding: 0 0 0 var(--spacing-m);

    font-variant: small-caps;
    font-size: var(--font-size-s);
}

fieldset.radial-tree-legend ul label {
    display: block;
    position: relative;
    cursor: pointer;
    user-select: none;
    padding: var(--spacing-prefix) 0 var(--spacing-prefix) var(--spacing-xl);
}

fieldset.radial-tree-legend ul li + li {
    margin-top: var(--spacing-xs);
}

fieldset.radial-tree-legend ul input[type=radio] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.radial-tree-legend__bullet {
    width: 10px;
    height: 10px;
    border-radius: var(--spacing-m);
    margin-right: 1ch;
    display: inline-block;
    align-self: center;
    transition: transform var(--transition-base), opacity var(--transition-base);

    position: absolute;
    top: 10px;
    left: var(--spacing-m);
    background-color: var(--color-bg-alt);
}

/* When ANY radio is checked, make unchecked ones appear inactive */
fieldset.radial-tree-legend ul:has(input[type=radio]:checked) input[type=radio]:not(:checked) ~ .radial-tree-legend__bullet {
    transform: scale(var(--opacity-decorative));
    opacity: var(--opacity-decorative);
}

fieldset.radial-tree-legend ul > li {
    border: 1px solid transparent;
    border-radius: var(--border-radius-s);
    padding: 0;
    margin-bottom: 1px;
}

fieldset.radial-tree-legend ul > li:hover {
    border: var(--subtle-border);
    cursor: pointer;
}

fieldset.radial-tree-legend ul > li:focus-within {
    border: 1px solid rgba(0,0,0,0.24);
}

/* Radial tree items (SVG text) */
.radial-item {
    text-underline-offset: 0.25ch;
    transition: font-size var(--transition-base);
    font-size: var(--font-size-m);
}

.radial-item--de-emphasized {
    opacity: 0.1;
}

.radial-item:not(.radial-item--subject):hover {
    text-decoration: underline;
    cursor: pointer;
}

/* Shared SVG text outline effect */
.svg-text-outlined {
    stroke: white;
    stroke-width: 6px;
    paint-order: stroke fill;
}

.radial-item--subject {
    /* Make the subject label easier to read in busy diagrams. */
    font-size: 40px;
}

/* Smaller font for subject labels when there are many long labels */
tspan.subject-label-small {
    font-size: 28px;
}

/* Subtle styling for bullet separators in subject labels */
tspan.subject-label-separator {
    opacity: var(--opacity-decorative);
}

/* Sense paragraph subscripts in radial labels */
tspan.sense-paragraph {
    font-size: 10px;
    fill: var(--color-faint);
}

/* Definition styling in radial diagram */
.definition-pos,
.definition-text {
    fill: var(--color-dark);
}

.definition-pos {
    font-weight: bold;
}

/* Word cloud items */
.word-cloud-item {
    filter: grayscale(1) opacity(var(--opacity-interactive));
    transition: filter var(--transition-base);
}

/* Only reveal colours when hovering parent SVG container. */
svg:hover .word-cloud-item {
    filter: grayscale(0) opacity(1);
}

.word-cloud-item:hover {
    text-decoration: underline;
    cursor: pointer;
}


/* ===========================================
   HYPERNYM CHAIN
   =========================================== */

ul.hypernym-chain {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

ul.hypernym-chain ul.hypernym-chain {
    padding-left: 1ch;
    margin: 0.8em 0;
}

.hypernym-chain--root li:first-child {
    margin-top: 0;
}

ul.hypernym-chain li::before {
    content: "↳";
    color: var(--color-dark);
    margin-right: 1ch;
    vertical-align: middle;
}

ul.hypernym-chain .set__left-bracket,
ul.hypernym-chain .set__right-bracket {
    display: none;
}

ul.hypernym-chain .set__content {
    text-align: left;
}

/* Subject item in hypernym chain - no arrow, styled as inactive */
ul.hypernym-chain > li.subject {
    color: var(--color-dark);
}

ul.hypernym-chain > li.subject::before {
    content: "";
    margin-right: 0;
}


/* ===========================================
   SPARQL EDITOR
   =========================================== */

.sparql-editor + output {
    display: block;
    margin-top: var(--spacing-xxl);
    overflow-x: auto;
}

.sparql-editor__input {
    display: flex;
    gap: var(--spacing-m);
}

.sparql-editor__buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-s);
}

.sparql-editor__buttons input[type=submit] {
    flex: 3;
}

.sparql-editor__buttons button {
    flex: 1;
}

.sparql-editor button,
.sparql-editor select,
.sparql-editor input[type=submit] {
    padding: var(--spacing-xs)  var(--spacing-s);
}

/* CodeMirror 6 editor */
.sparql-editor__input .cm-wrapper {
    flex-grow: 1;
    min-width: 0; /* Prevent flex child from expanding beyond container */
    min-height: 5em;
    display: flex;
    flex-direction: column;
    background: white;
    box-shadow: var(--shadow-card-subtle);
}

/* Before CM6 mounts, show a styled placeholder matching the editor appearance */
.sparql-editor__input .cm-wrapper:empty {
    border: var(--normal-border);
    border-radius: var(--border-radius-s);
    background: white;
    position: relative;
    overflow: hidden;
}

/* Fake gutter strip — mirrors .cm-gutters background and border-right */
.sparql-editor__input .cm-wrapper:empty::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 32px; /* approximate width of line-number + fold gutter */
    background: var(--color-bg-alt);
    border-right: 1px solid rgba(0, 0, 0, var(--border-opacity-subtle));
}

.sparql-editor__input .cm-wrapper .cm-editor {
    flex-grow: 1;
    border: var(--normal-border);
    border-radius: var(--border-radius-s);
    transition: border-color var(--transition-base),
                box-shadow var(--transition-base);
}

.sparql-editor__input .cm-wrapper .cm-editor.cm-focused {
    outline: none;
    border-color: var(--color-link);
    box-shadow: 0 0 0 1px var(--color-link);
}

.sparql-editor__input .cm-wrapper .cm-editor.cm-invalid {
    border-color: var(--color-dannet);
    box-shadow: 0 0 0 1px var(--color-dannet);
}

.cm-validation-error {
    color: white;
    background: black;
    box-shadow: inset 0 0 4px rgba(255,255,255,0.33);
    padding: var(--spacing-m);
    font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
    font-weight: normal;
    text-shadow: none !important;
    font-size: var(--font-size-s);
    white-space: pre-wrap;
}

.sparql-editor__input .cm-wrapper .cm-scroller {
    font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
    font-size: var(--font-size-s);
    line-height: 1.5;
    overflow-x: auto !important; /* Scroll horizontally instead of expanding the editor width */
}

.sparql-editor__input .cm-wrapper .cm-content {
    padding: var(--spacing-s) 0;
    color: var(--color-subtle); /* base colour for untagged tokens: { } . , ; etc. */
}

.sparql-editor__input .cm-wrapper .cm-gutters {
    background: var(--color-bg-alt);
    border-right: var(--subtle-border);
    color: var(--color-subtle);
    font-size: var(--font-size-xs);
}

/* TODO: this is work in progress, probably needs further adjustment */
/* SPARQL syntax highlighting via classHighlighter .tok-* classes */
.sparql-editor__input .tok-keyword      { color: var(--color-w3c); font-weight: bold; }
.sparql-editor__input .tok-variableName { color: var(--color-ontolex); }
.sparql-editor__input .tok-namespace    { color: var(--color-meta); }
.sparql-editor__input .tok-url          { color: var(--color-meta); } /* <IRI> literals */
.sparql-editor__input .tok-atom         { color: var(--color-wordnet); } /* QNames e.g. wn:foo */
.sparql-editor__input .tok-string       { color: var(--color-dark); }
.sparql-editor__input .tok-number,
.sparql-editor__input .tok-float,
.sparql-editor__input .tok-bool        { color: var(--color-dannet); }
.sparql-editor__input .tok-comment     { color: var(--color-subtle); font-style: italic; }
.sparql-editor__input .tok-annotation  { color: var(--color-meta); }
.sparql-editor__input .tok-typeName    { color: var(--color-ontolex); }

.sparql-editor__controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-m);
    margin-top: var(--spacing-m);
}

.sparql-pagination {
    display: flex;
    padding: var(--spacing-m) 0 0 0;
    gap: var(--spacing-m);
    justify-content: space-between;
}

.sparql-pagination__info {
    font-weight: bold;
}

label.distinct-select {
    margin-left: auto;
}

.sparql-progress {
    height: var(--spacing-s);
    margin-top: var(--spacing-xs);
    background: transparent;
}

#content.fetching .sparql-progress {
    background: var(--color-dannet);
    animation: sparql-fill 15s ease forwards;
}

@keyframes sparql-fill {
    from { transform: scaleX(0); transform-origin: left; }
    to   { transform: scaleX(1); transform-origin: left; }
}


/* ===========================================
   UTILITIES & MISCELLANEOUS
   =========================================== */

/* Used to hide prefixes. */
.hidden,
.hidden * {
    display: none;
}

.omitted {
    color: var(--color-faint);
    font-style: italic;
}

span.subtle {
    opacity: var(--opacity-decorative);
}

/* Generic icon button */
.icon {
    height: var(--icon-size);
    width: var(--icon-size);
    padding: var(--spacing-m);
    background-color: white;
    border: var(--subtle-border);
    border-radius: var(--border-radius-s);
}

.icon:hover,
.icon:focus-visible {
    border-color: var(--color-dark);
}

.icon.maximize,
.icon.minimize {
    background-position: center;
    background-repeat: no-repeat;
    background-size: 20px 20px;
    margin-bottom: var(--spacing-m);
}

.icon.maximize {
    background-image: url("/images/maximize.svg");
}

.icon.minimize {
    background-image: url("/images/minimize.svg");
}

/* Display options dropdown */
select.display-options {
    appearance: none;
    display: block;

    background: transparent url(/images/caret-down.svg) 0 center no-repeat;
    background-size: var(--font-size-s);
    border: none;
    padding: 0 0 0 16px;
    font-size: var(--font-size-s);

    color: black;
    cursor: pointer;
    opacity: 0.5;
}

select.display-options:hover,
select.display-options:focus-visible {
    opacity: var(--opacity-interactive-hover);
    text-decoration: underline;
}

* + select.display-options {
    margin-top: var(--spacing-s);
}

/* Help overlay (shown on wide screens) */
.help-overlay {
    opacity: 0;
    transition: opacity 1s;
    user-select: none;
}

.help-overlay__item {
    position: absolute;
    opacity: 0;
    transition: opacity var(--transition-fast) ease-in;
    animation: var(--transition-slow) ease-in infinite alternate point;
    text-transform: uppercase;
    left: 58px;
    z-index: var(--z-help);
    background: white;
    font-size: var(--font-size-xs);
    line-height: 1;
    padding: var(--spacing-xxs) var(--spacing-prefix) 0 var(--spacing-prefix);
    border-radius: var(--border-radius-s);
    border: 1px solid var(--color-faint);
    box-shadow: var(--shadow-card-subtle);
}

.help-overlay__item::before {
    content: "⭠";
    font-size: var(--font-size-l);
    vertical-align: middle;
    margin-right: var(--spacing-s);
}

nav:hover:has(search:not(.search-active)) ~ .help-overlay .help-overlay__item {
    opacity: 1;
}

/* Error boundary fallback */
details.render-error[open] {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    z-index: var(--z-modal);
    padding: 1em;
    margin: 0;
    overflow: auto;
    box-sizing: border-box;
}

details.render-error > summary {
    font-size: inherit;
    padding: 0;
}

/* Inline render error (red squiggly underline) */
span.render-error {
    text-decoration: underline wavy red;
    text-underline-offset: 5px;
    cursor: help;
}


/* ===========================================
   MEDIA QUERIES
   =========================================== */

/* --- Large screens (min-width, ascending) --- */

@media only screen and (min-width: 1200px) {
    /* Hide "fake" footer items until diagram view turns into single column view. */
    #content.full-screen aside.synset-radial__metadata .synset-radial__footer-item {
        display: none;
    }
    /* Make the fonts a bit bigger. */
    #content.full-screen fieldset.radial-tree-legend ul,
    #content.full-screen .synset-radial-container,
    #content.full-screen .synset-radial-container dd {
        font-size: var(--font-size-m);
    }
    #content.full-screen .radial-tree-legend__bullet {
        width: 14px;
        height: 14px;
        top: 10px;
        left: var(--spacing-s);
    }
    #content.full-screen fieldset.radial-tree-legend ul label {
        padding-left: var(--spacing-xl);
    }
    #content.full-screen fieldset.radial-tree-legend ul li + li {
        margin-top: var(--spacing-prefix);
    }
}

@media only screen and (min-width: 700px) {
    .help-overlay {
        opacity: 1;
    }
}

/* --- Small screens (max-width, descending) --- */

@media only screen and (max-width: 1200px) {
    .radial-tree {
        flex-direction: column;
        align-items: stretch;
    }
    fieldset.radial-tree-legend {
        border-left: none;
        border-top: var(--subtle-border);

        /* Place max/min icon below legend. */
        flex-direction: column-reverse;
    }
    fieldset.radial-tree-legend ul {
        columns: 3;
        margin: var(--spacing-m) auto 0 auto;
        padding: 0;
    }
    #content.full-screen aside.synset-radial__metadata {
        order: 3;
        border-right: none;
        border-top: var(--subtle-border);
        max-width: none;
        margin: 0;
        padding: var(--spacing-l) 0 0 0;
    }
    #content.full-screen figure.radial-tree-diagram,
    #content.full-screen svg.radial-tree-diagram__svg {
        max-height: calc(88vh - var(--layout-responsive-offset) - var(--spacing-l));
    }
    /* Remove real footer items once the metadata column becomes the footer. */
    #content.full-screen .synset-radial-container footer.synset-radial__footer {
        display: none;
    }
}

@media only screen and (max-width: 750px) {
    .synset-radial-container {
        font-size: var(--font-size-s);
    }
    fieldset.radial-tree-legend ul {
        columns: 2;
    }
}

/* Mobile view (minimalist) */
@media only screen and (max-width: 700px) {
    .sparql-editor__controls {
        justify-content: flex-end;
    }
    td.attr-name > [lang]:not(footer, h1 span, article)::after {
        content: "";
    }
    td {
        font-size: var(--font-size-s);
    }
    header > .rdf-uri,
    table.attr-val.attr-val--nested td {
        font-size: var(--font-size-xs);
    }
    table.attr-val.attr-val--nested col:nth-child(2) {
        min-width: 10ch;
    }
    .synset-radial-container .synset-radial__definition {
        flex-direction: column;
        margin: 0 auto 0 0;
    }
    .icon.maximize,
    .icon.minimize {
        align-self: flex-start;
    }

    /* Turn the nav bar horizontal on mobile. */
    .help-overlay {
        display: none;
    }
    #app {
        flex-direction: column;
    }
    nav#main-nav {
        flex-direction: row;
        border: 1px solid transparent;
        border-bottom: var(--normal-border);
    }
    nav#main-nav:has(search.search-active) a.sparql-link {
        margin-top: 0;
        margin-left: calc(var(--icon-size) + var(--spacing-s));
    }
    nav#main-nav a.title {
        writing-mode: initial;
        text-orientation: initial;
        margin: 0 auto;
    }
    article.document > div > ul:first-child  {
        gap: var(--spacing-m);
        font-size: var(--font-size-s);
    }
}

@media only screen and (max-width: 600px) {
    .radial-item:not(.radial-item--subject) {
        font-size: var(--font-size-m-l);
    }
}

@media only screen and (max-width: 500px) {
    p.note.desktop-only,
    td.attr-prefix > *,
    span.prefix:not(.independent) {
        display: none;
    }
    table.attr-val col:nth-child(2) {
        min-width: 10ch;
    }
    fieldset.radial-tree-legend ul {
        columns: 1;
    }
    .radial-item:not(.radial-item--subject) {
        font-size: var(--font-size-m-xl);
    }
}