/* Apprentix.EU — site styles
   No build step. Plain CSS, custom properties, light + dark. */

:root {
  --ground: #f6f6f3;
  --surface: #ffffff;
  --sunken: #ecece7;
  --ink: #14181b;
  --muted: #5c6569;
  --faint: #8b9398;
  --line: #e1e1db;
  --line-strong: #c8c9c1;
  --accent: #0f6b63;
  --accent-ink: #0a4a44;
  --accent-soft: #e2f0ee;
  --on-accent: #ffffff;
  --amber: #a15c11;
  --amber-soft: #fbf0df;
  --shadow: 0 8px 28px rgba(20, 24, 27, .09);

  --display: "Newsreader", Georgia, serif;
  --body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --rail: 290px;
  --max: 1220px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #101413;
    --surface: #191e1d;
    --sunken: #0c100f;
    --ink: #e8ebe9;
    --muted: #a2aca8;
    --faint: #717c79;
    --line: #2a3230;
    --line-strong: #3d4845;
    --accent: #5fd4c4;
    --accent-ink: #9ae8dc;
    --accent-soft: #14302c;
    --on-accent: #101413;
    --amber: #e0a561;
    --amber-soft: #2e2416;
    --shadow: 0 8px 28px rgba(0, 0, 0, .5);
  }
}
:root[data-theme="dark"] {
  --ground: #101413;
  --surface: #191e1d;
  --sunken: #0c100f;
  --ink: #e8ebe9;
  --muted: #a2aca8;
  --faint: #717c79;
  --line: #2a3230;
  --line-strong: #3d4845;
  --accent: #5fd4c4;
  --accent-ink: #9ae8dc;
  --accent-soft: #14302c;
  --on-accent: #101413;
  --amber: #e0a561;
  --amber-soft: #2e2416;
  --shadow: 0 8px 28px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 15.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-ink); text-underline-offset: 2px; }
a:hover { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

button { font: inherit; color: inherit; cursor: pointer; }

h1, h2, h3 { margin: 0; text-wrap: balance; }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: 20px; }

.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--accent); color: var(--on-accent);
  padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- Header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}

.head-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 62px;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.28rem;
  letter-spacing: -.015em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.brand .x { color: var(--accent); }
.brand .eu {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--faint);
  margin-left: 4px;
  transform: translateY(-2px);
}

.site-nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .92rem;
  font-weight: 500;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }

/* ---------- Independent notice ---------- */

.indep {
  background: var(--amber-soft);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: .85rem;
}
.indep .wrap { padding-block: 8px; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.indep .tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--amber);
  font-weight: 600;
}
.indep p { margin: 0; color: var(--muted); }

/* ---------- Hero ---------- */

.hero { padding-block: 56px 40px; border-bottom: 1px solid var(--line); }
.hero h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  max-width: 16ch;
}
.hero .lede {
  margin: 18px 0 0;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 52ch;
  text-wrap: pretty;
}

.stats { display: flex; flex-wrap: wrap; gap: 30px; margin-top: 30px; }
.stat .n {
  font-family: var(--display);
  font-size: 1.9rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.stat .l { font-size: .8rem; color: var(--muted); margin-top: 4px; }

/* ---------- Sections ---------- */

.section { padding-block: 44px; }
.section > h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -.012em;
  margin-bottom: 6px;
}
.section > .sub { color: var(--muted); margin: 0 0 22px; max-width: 58ch; }

/* ---------- Dataset cards ---------- */

.ds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
}

.ds-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.ds-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.ds-card h3 { font-size: 1.12rem; font-weight: 700; line-height: 1.25; }
.ds-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.ds-card .meta {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 14px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .06em;
}

.ds-card.soon { opacity: .62; pointer-events: none; border-style: dashed; }

/* ---------- Explorer layout ---------- */

.explore {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  padding-block: 28px 100px;
}
@media (max-width: 900px) {
  .explore { grid-template-columns: 1fr; }
  .rail { position: static !important; }
}

.rail { position: sticky; top: 78px; display: flex; flex-direction: column; gap: 18px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
}
.panel h2 { font-size: .95rem; font-weight: 700; margin-bottom: 4px; }
.panel .hint { font-size: .82rem; color: var(--muted); margin: 0 0 12px; }

.search {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}
.search::placeholder { color: var(--faint); }

.fgroup + .fgroup { margin-top: 16px; }
.flabel {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 4px 11px;
  font-size: .8rem;
  color: var(--muted);
  transition: background .15s, color .15s, border-color .15s;
}
.chip:hover { border-color: var(--accent); color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}
.chip .n { opacity: .6; margin-left: 5px; font-variant-numeric: tabular-nums; }

.linkbtn {
  background: none; border: none; padding: 0;
  color: var(--accent-ink); font-size: .85rem;
}
.linkbtn:hover { text-decoration: underline; }

/* ---------- Results ---------- */

.results-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.results-head h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: -.015em;
}
.count { font-size: .88rem; color: var(--muted); font-variant-numeric: tabular-nums; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.card.picked { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

.card .group {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.card h3 { font-size: 1.02rem; font-weight: 700; line-height: 1.3; }
.card .sub { font-size: .85rem; color: var(--muted); font-style: italic; }

.facts { display: flex; flex-wrap: wrap; gap: 5px; }
.fact {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .04em;
  background: var(--sunken);
  border-radius: 5px;
  padding: 3px 7px;
  color: var(--muted);
  white-space: nowrap;
}
.fact.key { background: var(--accent-soft); color: var(--accent-ink); }

.card-actions { display: flex; gap: 8px; margin-top: auto; padding-top: 4px; }
.btn {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: .85rem;
  font-weight: 500;
  transition: background .15s, border-color .15s;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.empty { color: var(--muted); padding: 56px 0; text-align: center; }

/* ---------- Detail drawer ---------- */

.scrim {
  position: fixed; inset: 0;
  background: rgba(10, 14, 13, .55);
  opacity: 0; pointer-events: none;
  transition: opacity .2s;
  z-index: 40;
}
.scrim.show { opacity: 1; pointer-events: auto; }

.drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(580px, 100vw);
  background: var(--surface);
  border-left: 1px solid var(--line);
  transform: translateX(102%);
  transition: transform .25s ease;
  z-index: 50;
  overflow-y: auto;
  padding: 28px;
}
.drawer.show { transform: none; }
.drawer .close {
  position: absolute; top: 18px; right: 18px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 8px;
  width: 32px; height: 32px;
  font-size: 15px; line-height: 1;
}
.drawer .group { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-ink); }
.drawer h2 { font-family: var(--display); font-weight: 600; font-size: 1.7rem; margin: 6px 0 2px; padding-right: 44px; letter-spacing: -.015em; }
.drawer .sub { color: var(--muted); font-style: italic; }
.drawer .summary { margin: 16px 0 0; max-width: 60ch; }

.sec { margin-top: 22px; }
.sec > h3 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.kv { border-top: 1px solid var(--line); }
.kv .row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
}
@media (max-width: 520px) { .kv .row { grid-template-columns: 1fr; gap: 2px; } }
.kv .k { color: var(--muted); font-size: .84rem; }

.drawer .foot { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.provenance { margin-top: 18px; font-size: .8rem; color: var(--faint); max-width: 58ch; }

/* ---------- Compare tray + table ---------- */

.tray {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--surface);
  border-top: 2px solid var(--accent);
  transform: translateY(110%);
  transition: transform .25s ease;
  z-index: 30;
  box-shadow: var(--shadow);
}
.tray.show { transform: none; }
.tray .wrap { padding-block: 12px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.tray .label { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.slot {
  font-size: .85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--sunken);
  padding: 4px 11px;
}
.slot button { background: none; border: none; color: var(--muted); margin-left: 6px; padding: 0; }
.spacer { flex: 1; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  margin-top: 16px;
}
table.compare { border-collapse: separate; border-spacing: 0; width: 100%; font-size: .9rem; }
table.compare th, table.compare td {
  padding: 11px 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  min-width: 220px;
}
table.compare thead th { background: var(--sunken); font-weight: 700; }
table.compare thead .oc { display: block; font-weight: 400; font-size: .8rem; color: var(--muted); font-style: italic; }
table.compare tbody th { color: var(--muted); font-weight: 500; font-size: .82rem; }
table.compare th:first-child, table.compare td:first-child {
  position: sticky; left: 0; z-index: 2;
  background: var(--surface);
  min-width: 150px; max-width: 175px;
  border-right: 1px solid var(--line);
}
table.compare thead th:first-child { background: var(--sunken); }
table.compare tr.sect th {
  background: var(--sunken) !important;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  max-width: none;
  border-right: none;
}

.toggle { font-size: .85rem; color: var(--muted); display: flex; align-items: center; gap: 6px; cursor: pointer; }
.toggle input { accent-color: var(--accent); }

.viewbar { display: none; margin-bottom: 16px; gap: 10px; align-items: center; flex-wrap: wrap; }
.viewbar.show { display: flex; }

/* ---------- Footer ---------- */

.site-foot {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding-block: 32px 44px;
  margin-top: 40px;
}
.site-foot .wrap { display: grid; gap: 12px; }
.site-foot p { margin: 0; color: var(--muted); font-size: .88rem; max-width: 62ch; }
.site-foot .rowlinks { display: flex; gap: 18px; flex-wrap: wrap; font-size: .88rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}