:root {
  --bg: #f4f2ee;
  --fl: #ffffff;
  --fg: #1c1b19;
  --mute: #6d6a63;
  --linie: #1c1b19;
  --akzent: #8a3ffc;
  --luecke: 6px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121212; --fl: #1b1b1b; --fg: #ece9e3; --mute: #9a968e; --linie: #ece9e3; }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  display: grid; grid-template-rows: auto 1fr auto; min-height: 100dvh;
  background: var(--bg); color: var(--fg);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Helvetica Neue", system-ui, sans-serif;
}

/* ── NAV + Logo ───────────────────────────── */
.kopf {
  position: sticky; top: 0; z-index: 5;
  display: flex; gap: 12px; align-items: center;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1.5px solid var(--linie);
}
.nav {
  flex: 1; display: flex; align-items: center; gap: 4px; min-width: 0;
  border: 1.5px solid var(--linie); border-radius: 4px; padding: 4px 6px;
}
.marke { font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-right: auto; padding: 0 6px; }
.nav button {
  font: inherit; color: inherit; background: none; border: 0; cursor: pointer;
  padding: 6px 10px; border-radius: 3px;
}
.nav { position: relative; }
.punkte { display: flex; gap: 4px; }
.menue, .mobil { display: none; }
@media (max-width: 640px) {
  .menue { display: block; font-size: 20px; }
  .punkte {
    display: none; position: absolute; top: calc(100% + 6px); left: -1.5px; right: -1.5px;
    flex-direction: column; align-items: stretch; padding: 6px;
    background: var(--bg); border: 1.5px solid var(--linie); border-radius: 4px;
  }
  .nav.offen .punkte { display: flex; }
  .punkte button { text-align: left; padding: 10px 12px; }
  .mobil { display: inline; }
}
.nav button[aria-pressed="true"] { background: var(--fg); color: var(--bg); }
.nav button:hover:not([aria-pressed="true"]) { background: color-mix(in srgb, var(--fg) 10%, transparent); }
.logo {
  flex: none; width: 44px; height: 44px; display: grid; place-items: center;
  border: 1.5px solid var(--linie); border-radius: 4px;
  color: inherit; text-decoration: none; font-weight: 700;
}
.logo img { max-width: 34px; max-height: 34px; }

/* ── Bilder: Collage (unregelmäßig) ───────── */
main { padding: var(--luecke); }
.collage {
  display: grid; gap: var(--luecke);
  grid-template-columns: repeat(var(--spalten, 6), 1fr);
  grid-auto-rows: var(--zeile, 160px);
  grid-auto-flow: dense;
}
@media (max-width: 1100px) { .collage { --spalten: 4; --zeile: 150px; } }
@media (max-width: 640px)  { .collage { --spalten: 2; --zeile: 130px; } }
.kachel {
  position: relative; overflow: hidden; margin: 0; cursor: zoom-in;
  background: color-mix(in srgb, var(--fg) 8%, transparent); border-radius: 2px;
}
.kachel.b2 { grid-column: span 2; }
.kachel.h2 { grid-row: span 2; }
@media (max-width: 640px) { .kachel.b2.h2 { grid-column: span 2; grid-row: span 2; } }
.kachel img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: opacity 1.2s ease, transform 6s ease;
}
.kachel img.neu { opacity: 0; transform: scale(1.04); }
.kachel:hover img { transform: scale(1.02); }

/* ── Alle: Mauerwerk ──────────────────────── */
.alle { columns: 5 220px; column-gap: var(--luecke); }
.alle .kachel { display: block; margin: 0 0 var(--luecke); break-inside: avoid; }
.alle .kachel img { position: static; height: auto; }

/* ── FOOTER ───────────────────────────────── */
.fuss {
  display: flex; flex-wrap: wrap; gap: 6px 20px; justify-content: center;
  padding: 18px 16px calc(18px + env(safe-area-inset-bottom));
  border-top: 1.5px solid var(--linie); font-size: 14px; color: var(--mute);
}
.fuss a { color: inherit; }

/* ── Leuchtkasten ─────────────────────────── */
dialog {
  border: 0; padding: 0; margin: 0; width: 100vw; height: 100dvh; max-width: none; max-height: none;
  background: #000; color: #eee;
}
dialog::backdrop { background: #000; }
dialog img { width: 100%; height: 100%; object-fit: contain; display: block; }
dialog button {
  position: absolute; background: rgba(0,0,0,.45); color: #fff; border: 0; cursor: pointer;
  font-size: 28px; width: 48px; height: 48px; border-radius: 50%;
}
.lk-zu { top: calc(12px + env(safe-area-inset-top)); right: 12px; font-size: 20px; }
.lk-zurueck { left: 12px; top: 50%; translate: 0 -50%; }
.lk-vor { right: 12px; top: 50%; translate: 0 -50%; }
.lk-info { position: absolute; bottom: calc(8px + env(safe-area-inset-bottom)); left: 0; right: 0; text-align: center; margin: 0; font-size: 13px; opacity: .7; }

@media (prefers-reduced-motion: reduce) { .kachel img { transition: none; } }