/* steckbrief.de – eine Karteikarte pro Thema. Die Karte ist das Produkt,
   die Seite drumherum bleibt ruhig. Einziger Akzent: die rote Kopflinie
   einer echten Karteikarte. */

:root {
  --desk: #eef1f5;          /* Seitenhintergrund, der "Schreibtisch" */
  --paper: #ffffff;         /* Karte */
  --ink: #14181d;
  --ink-2: #3d454f;
  --ink-3: #6b7480;
  --rule: #d9dee5;
  --rule-soft: #eef0f3;
  --mark: #d6342c;          /* Rotlinie der Karteikarte */
  --focus: #1a5fb4;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 24, 29, .06), 0 6px 16px rgba(20, 24, 29, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --gutter: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --desk: #15181c;
    --paper: #1f2329;
    --ink: #eef1f5;
    --ink-2: #c5ccd6;
    --ink-3: #8e97a3;
    --rule: #343a42;
    --rule-soft: #2a2f36;
    --mark: #e5544c;
    --focus: #7cb2ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 16px rgba(0, 0, 0, .3);
  }
  .badge, .chip { filter: saturate(.85) brightness(.92); }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
}

a { color: inherit; }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--paper); padding: 8px 12px; border-radius: 6px;
}
.skip:focus { left: 8px; z-index: 10; }

/* ---------- Seitenrahmen ---------- */

.site-head, .site-main, .site-foot {
  width: min(100% - 2 * var(--gutter), 1120px);
  margin-inline: auto;
}

.site-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 0 8px;
}

.wordmark {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.wordmark span { color: var(--mark); }

.site-claim {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.95rem;
}

.site-foot {
  padding: 40px 0 32px;
  color: var(--ink-3);
  font-size: 0.85rem;
}
.site-foot p { margin: 0 0 8px; }
.site-foot nav { display: flex; gap: 20px; }

/* ---------- Intro / Filter ---------- */

.intro { padding: 24px 0 8px; max-width: 42rem; }
.intro h1 {
  margin: 0 0 8px;
  font-size: clamp(1.6rem, 1.1rem + 2.5vw, 2.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.intro p { margin: 0; color: var(--ink-2); font-size: 1.05rem; }

.crumbs { display: flex; gap: 8px; padding-top: 20px; font-size: 0.9rem; color: var(--ink-3); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.crumbs a + a::before { content: "/"; margin-right: 8px; color: var(--rule); }

.filter {
  display: flex;
  gap: 8px;
  padding: 20px 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.filter::-webkit-scrollbar { display: none; }

.chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-2);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.chip small { font-size: 0.75em; font-weight: 500; color: var(--ink-3); }
.chip.is-active {
  background: var(--badge-bg, var(--ink));
  color: var(--badge-fg, var(--paper));
  border-color: transparent;
}
.chip.is-active small { color: inherit; opacity: .75; }

/* ---------- Raster ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 16px;
  padding: 16px 0 0;
  align-items: start;
}
.grid-empty { grid-column: 1 / -1; color: var(--ink-3); margin: 24px 0; }
.grid-empty[hidden] { display: none; }

.card.is-hidden { display: none; }

/* ---------- Karte ---------- */

.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px 12px;
  overflow: hidden;
}
/* Rotlinie wie auf einer Karteikarte: knapp unter der Kopfzeile */
.card::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: var(--mark);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin: 4px 0 10px;
}
.card-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.25;
}
.card-title a { text-decoration: none; }
.card-title a:hover { text-decoration: underline; text-decoration-color: var(--mark); }
.card-icon { margin-right: 4px; }

.badge {
  flex: 0 0 auto;
  margin-top: 2px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-fg);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.card-summary {
  margin: 0 0 12px;
  font-size: 0.97rem;
  font-weight: 500;
  line-height: 1.4;
}

.card-facts {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--rule-soft);
  font-size: 0.87rem;
  color: var(--ink-2);
  line-height: 1.4;
}
.fact { margin: 0 0 6px; }
.fact:last-child { margin-bottom: 0; }
.fact dt { display: inline; font-weight: 700; color: var(--ink); }
.fact dt::after { content: ":"; }
.fact dd { display: inline; margin: 0 0 0 4px; }

.card-why {
  margin: 10px 0 0;
  padding-top: 8px;
  border-top: 1px dashed var(--rule);
  font-size: 0.82rem;
  color: var(--ink-2);
  line-height: 1.4;
}
.card-why strong { color: var(--ink); }

.card-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 0.72rem;
  color: var(--ink-3);
}

/* ---------- Einzelseite ---------- */

.solo { max-width: 520px; padding-top: 16px; }
.solo .card-title { font-size: 1.25rem; }

.related { padding-top: 32px; }
.related h2 { margin: 0; font-size: 1.1rem; font-weight: 700; }
.related .grid { padding-top: 12px; }

/* ---------- Textseiten ---------- */

.prose p { margin: 0 0 12px; }
.todo {
  padding: 10px 12px;
  border-left: 3px solid var(--mark);
  background: var(--paper);
  color: var(--ink-2);
}

@media (prefers-reduced-motion: no-preference) {
  .chip, .card-title a { transition: background-color .15s, color .15s; }
}

@media (max-width: 480px) {
  .site-head { flex-direction: column; gap: 2px; }
  .card { padding: 12px 14px 10px; }
}