:root {
  color-scheme: dark;
  --ground: #111310;
  --panel: #191c18;
  --raised: #22261f;
  --ink: #f2efe4;
  --muted: #b9b7ae;
  --line: #3c4237;
  --accent: #c7ff4a;
  --accent-ink: #0e1306;
  --focus: #8bc9ff;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ground); color: var(--ink); min-height: 100vh; }
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: 1rem; transform: translateY(-200%); z-index: 10; background: var(--accent); color: var(--accent-ink); padding: .7rem 1rem; }
.skip-link:focus { transform: none; }
.masthead { display: flex; justify-content: space-between; gap: 2rem; padding: clamp(1.5rem, 4vw, 4rem); border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 .5rem; color: var(--accent); font: 700 .78rem/1.2 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(2.6rem, 8vw, 7rem); line-height: .9; letter-spacing: -.06em; }
h1 span { color: var(--accent); }
.lede { max-width: 48rem; margin: 1.25rem 0 0; color: var(--muted); font-size: 1.05rem; line-height: 1.55; }
.summary { align-self: flex-end; display: grid; grid-template-columns: auto auto; gap: .1rem .45rem; font: .8rem/1.25 ui-monospace, monospace; color: var(--muted); }
.summary strong { color: var(--ink); font-size: 1.2rem; }
main { padding: 1.25rem clamp(1rem, 3vw, 3rem) 4rem; }
.controls { position: sticky; top: 0; z-index: 3; display: grid; grid-template-columns: minmax(14rem, 2fr) repeat(2, minmax(9rem, 1fr)) auto auto; gap: .75rem; align-items: end; padding: 1rem 0; background: color-mix(in srgb, var(--ground) 94%, transparent); backdrop-filter: blur(12px); }
.controls label { display: grid; gap: .35rem; color: var(--muted); font-size: .8rem; }
.controls input[type="search"], .controls select, .controls button { min-height: 2.8rem; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: .55rem .7rem; font: inherit; }
.favorite-toggle { grid-auto-flow: column; align-items: center; align-self: center; padding-top: 1.1rem; white-space: nowrap; }
.favorite-toggle input { width: 1.25rem; height: 1.25rem; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.status { min-height: 1.25rem; color: var(--muted); font-size: .85rem; }
.catalog { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.artifact-card { min-width: 0; padding: 1.2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--panel); }
.artifact-card:hover { background: var(--raised); }
.card-heading { display: flex; justify-content: space-between; gap: .75rem; }
.artifact-card h2 { margin: .35rem 0 .7rem; font-size: 1.2rem; line-height: 1.15; }
.meta-line { margin: 0; display: flex; gap: .45rem; flex-wrap: wrap; color: var(--muted); font: .7rem/1.2 ui-monospace, monospace; text-transform: uppercase; }
.meta-line span + span::before { content: "· "; }
.description { color: var(--muted); line-height: 1.5; min-height: 4.5em; }
.tags { display: flex; flex-wrap: wrap; gap: .35rem; min-height: 2rem; }
.tags span { border: 1px solid var(--line); padding: .18rem .38rem; font: .68rem/1.3 ui-monospace, monospace; color: var(--muted); }
.favorite { border: 0; background: transparent; color: var(--accent); min-width: 2.75rem; min-height: 2.75rem; font-size: 1.45rem; }
.actions { margin-top: 1rem; display: grid; gap: .75rem; }
.open { display: block; width: 100%; background: var(--accent); color: var(--accent-ink); text-align: center; text-decoration: none; font-weight: 800; padding: .72rem .9rem; }
.open[aria-disabled="true"] { opacity: .45; pointer-events: none; }
details { border-top: 1px solid var(--line); padding-top: .65rem; }
summary { cursor: pointer; color: var(--muted); }
.facts { display: grid; gap: .35rem; margin: .8rem 0 0; font-size: .75rem; }
.facts div { display: grid; grid-template-columns: 6.5rem 1fr; gap: .5rem; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.empty { text-align: center; padding: 4rem 1rem; color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
@media (max-width: 760px) {
  .masthead { display: block; }
  .summary { margin-top: 2rem; display: flex; gap: .4rem; align-items: baseline; }
  .controls { position: static; grid-template-columns: 1fr 1fr; }
  .search { grid-column: 1 / -1; }
  .favorite-toggle { padding-top: 0; }
}
@media (max-width: 460px) {
  .controls { grid-template-columns: 1fr; }
  .search { grid-column: auto; }
  .catalog { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

/* Compact masthead + provenance dashboard */
.masthead { display: grid; grid-template-columns: minmax(15rem, .95fr) minmax(37rem, 1.55fr); align-items: start; gap: clamp(1.25rem, 3vw, 3rem); padding: 1.2rem clamp(1rem, 3vw, 3rem) 1.15rem; }
.masthead-main { min-width: 0; }
.masthead-top { display: flex; gap: 1rem; justify-content: space-between; align-items: center; margin-bottom: .65rem; }
.eyebrow { margin: 0; letter-spacing: .09em; font-size: .69rem; }
.eyebrow-separator { color: var(--muted); padding: 0 .3rem; }
h1 { font-size: clamp(2.4rem, 4vw, 4.6rem); line-height: 1.03; letter-spacing: -.055em; }
.lede { margin: .5rem 0 0; font-size: .82rem; line-height: 1.5; max-width: 30rem; }
.overview { display: grid; gap: .8rem; align-content: center; min-width: 0; }
.overview-primary { display: grid; grid-template-columns: 1.45fr 1fr 1fr; gap: .7rem; }
.big-stat, .small-stat { min-width: 0; border-left: 1px solid var(--line); padding-left: .75rem; display: flex; flex-direction: column; gap: .1rem; }
.big-stat > strong { color: var(--accent); font-size: 1.9rem; font-weight: 750; line-height: 1; font-variant-numeric: tabular-nums; }
.small-stat > strong { font-size: 1.4rem; line-height: 1.15; font-variant-numeric: tabular-nums; }
.big-stat span, .small-stat span, .kind-summary-label { font: .69rem/1.4 ui-monospace, monospace; color: var(--muted); }
.big-stat span strong { color: var(--ink); }
.kind-summary { display: grid; gap: .28rem; }
.kind-summary-label { display: flex; justify-content: space-between; }
.kind-bar { display: flex; height: .45rem; overflow: hidden; background: var(--raised); }
.kind-bar > span { height: 100%; }
.kind-bar > span + span { border-left: 2px solid var(--ground); }
.kind-legend { display: flex; flex-wrap: wrap; gap: .3rem .7rem; color: var(--muted); font: .65rem/1.35 ui-monospace, monospace; }
.kind-legend span { display: inline-flex; gap: .35rem; align-items: center; }
.kind-legend i { display: inline-block; width: .52rem; height: .52rem; }
.release-meta { margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem .9rem; }
.release-meta div { display: grid; gap: .2rem; min-width: 0; }
.release-meta dt { color: var(--muted); font: .66rem ui-monospace, monospace; text-transform: uppercase; }
.release-meta dd { margin: 0; font-size: .76rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-variant-numeric: tabular-nums; }
.release-meta code { color: var(--accent); font: .74rem ui-monospace, monospace; }
.settings-menu { position: relative; flex: none; border: 0; padding: 0; z-index: 8; }
.settings-menu > summary { list-style: none; border: 1px solid var(--line); padding: .5rem .7rem; font: .76rem ui-monospace, monospace; color: var(--ink); white-space: nowrap; }
.settings-menu > summary::-webkit-details-marker { display: none; }
.settings-menu[open] > summary, .settings-menu > summary:hover { border-color: var(--accent); }
.settings-popover { position: absolute; z-index: 9; right: 0; top: calc(100% + .35rem); width: min(19rem, 88vw); padding: 1rem; border: 1px solid var(--line); background: var(--panel); box-shadow: 0 12px 35px #0008; display: grid; gap: .45rem; }
.settings-popover h2 { font-size: 1rem; margin: 0 0 .4rem; }
.settings-popover label { color: var(--muted); font-size: .75rem; }
.settings-popover select, .settings-popover button { width: 100%; min-height: 2.4rem; background: var(--ground); border: 1px solid var(--line); color: var(--ink); padding: .45rem; font: inherit; }
.settings-popover button { margin-top: .5rem; }
.settings-popover p { color: var(--muted); font-size: .72rem; margin: .3rem 0 0; }
.controls { grid-template-columns: minmax(12rem, 2fr) repeat(3, minmax(8rem, 1fr)) auto auto; }
.catalog[data-columns="wide"] { grid-template-columns: repeat(auto-fill, minmax(min(100%, 24rem), 1fr)); }
body[data-density="compact"] .artifact-card { padding: .8rem; }
body[data-density="compact"] .description { min-height: 0; line-height: 1.4; }
body[data-density="compact"] .tags { min-height: 0; }
body[data-density="compact"] .artifact-card h2 { font-size: 1.05rem; }
:root[data-theme="blue"] { --ground:#10151d; --panel:#18212d; --raised:#233144; --ink:#eff6ff; --muted:#b6c6dc; --line:#394a5f; --accent:#7ec8ff; --accent-ink:#091523; --focus:#f7d37a; color-scheme:dark; }
:root[data-theme="amber"] { --ground:#18140f; --panel:#211b13; --raised:#2e2417; --ink:#fbefdf; --muted:#cabbab; --line:#544333; --accent:#ffbe55; --accent-ink:#211306; --focus:#8fcfff; color-scheme:dark; }
:root[data-theme="mono"] { --ground:#111; --panel:#1c1c1c; --raised:#292929; --ink:#f7f7f7; --muted:#bdbdbd; --line:#494949; --accent:#ededed; --accent-ink:#151515; --focus:#8ecaff; color-scheme:dark; }
:root[data-theme="light"] { --ground:#f4f3ef; --panel:#fff; --raised:#ecebe6; --ink:#1d2728; --muted:#4d5d5e; --line:#c4cdca; --accent:#006b59; --accent-ink:#fff; --focus:#ad5b06; color-scheme:light; }
@media (max-width: 1100px) {
  .masthead { grid-template-columns: 1fr; gap: 1rem; }
  .overview { grid-template-columns: 1fr 1fr; align-items: start; }
  .release-meta { grid-column: 1 / -1; }
  .controls { grid-template-columns: minmax(12rem, 2fr) repeat(3, minmax(8rem, 1fr)); }
  .favorite-toggle { padding-top: 0; }
}
@media (max-width: 760px) {
  .masthead { padding: 1rem; }
  .overview { display: grid; grid-template-columns: 1fr; }
  .release-meta { grid-column: auto; grid-template-columns: 1fr 1fr; }
  .controls { grid-template-columns: 1fr 1fr; }
  .search { grid-column: 1 / -1; }
  .favorite-toggle { align-self: center; }
}
@media (max-width: 460px) {
  .controls { grid-template-columns: 1fr; }
  .search { grid-column: auto; }
  .release-meta { gap: .65rem; }
  .overview-primary { gap: .3rem; }
  .big-stat > strong { font-size: 1.5rem; }
  .small-stat > strong { font-size: 1.2rem; }
}