/* ==========================================================================
   TRUE COLORS ART — felles identitet
   --------------------------------------------------------------------------
   Prinsipper (se README):
   · Rommet er fargeløst — fargen kommer fra verkene.
   · Tre stemmer i typografien: katalogen (IM Fell), leseren (Newsreader),
     arkivet (Courier Prime).
   · Én signalfarge (rød) for menneskelige merker: stempler, blyant, «du er her».
   · Verkene står stille. Det er lyset og den besøkende som beveger seg.
   ========================================================================== */

@font-face { font-family: "Fell"; src: url("../fonts/im-fell-english-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Fell"; src: url("../fonts/im-fell-english-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Leser"; src: url("../fonts/newsreader-latin-opsz-normal.woff2") format("woff2"); font-weight: 200 800; font-style: normal; font-display: swap; }
@font-face { font-family: "Leser"; src: url("../fonts/newsreader-latin-opsz-italic.woff2") format("woff2"); font-weight: 200 800; font-style: italic; font-display: swap; }
@font-face { font-family: "Arkiv"; src: url("../fonts/courier-prime-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Arkiv"; src: url("../fonts/courier-prime-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  /* materialer */
  --kalk: #e7e0d2;        /* kalket vegg */
  --kalk-skygge: #d6ccb9;
  --papir: #f0eadf;       /* arkivpapir */
  --blekk: #1b1714;       /* trykksverte */
  --blekk-2: #4a423b;
  --umbra: #2a211d;       /* kapellveggen */
  --gull: #b8913a;        /* bladgull */
  --messing: #9c7a3e;
  --morkerom: #110c0b;
  --signal: #b3261e;      /* stempel, blyant, «du er her» */
  --kryssfiner: #cbb48e;

  /* typografi */
  --f-katalog: "Fell", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --f-leser: "Leser", "Iowan Old Style", Georgia, serif;
  --f-arkiv: "Arkiv", "Courier New", Courier, monospace;

  /* bevegelse: tungt, rolig, aldri sprettende */
  --ease: cubic-bezier(.22,.61,.18,1);
  --ease-inn: cubic-bezier(.6,.02,.8,.35);

  /* korn — ett felles materiale for vegg og papir */
  --korn: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n' x='0' y='0' width='100%' height='100%'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 .55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  --flekker: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='900' height='900'><filter id='f' x='0' y='0' width='100%' height='100%'><feTurbulence type='fractalNoise' baseFrequency='.006' numOctaves='4' seed='7' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1.4 -.55'/></filter><rect width='100%' height='100%' filter='url(%23f)'/></svg>");
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--kalk);
  color: var(--blekk);
  font-family: var(--f-leser);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px dashed var(--signal); outline-offset: 4px; }
.sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.arkiv { font-family: var(--f-arkiv); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; line-height: 1.5; }

/* ---------- Ordmerket: som vinylbokstaver ved inngangen ---------- */
.ordmerke {
  position: fixed; z-index: 60; left: clamp(16px, 2.4vw, 36px); top: clamp(14px, 2.2vw, 30px);
  text-decoration: none; line-height: 1; color: var(--ordmerke-farge, var(--blekk));
  transition: color 1.2s var(--ease);
  display: grid; gap: .35rem;
}
.ordmerke b { font: 400 1.32rem/1 var(--f-katalog); letter-spacing: -.01em; }
.ordmerke b i { font-style: italic; }
.ordmerke span { font-family: var(--f-arkiv); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; opacity: .72; padding-left: .1rem; }

/* ---------- Skiltet: navigasjon som museets vegvisning ---------- */
.skilt {
  position: fixed; z-index: 60; right: clamp(16px, 2.4vw, 36px); top: clamp(14px, 2.2vw, 30px);
  background: var(--blekk); color: var(--kalk);
  font-family: var(--f-arkiv); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase;
  padding: .3rem 0; min-width: 11.5rem;
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 10px 24px -14px rgba(0,0,0,.6);
}
.skilt::before { /* skruer i hjørnene */
  content: ""; position: absolute; inset: 5px; pointer-events: none;
  background:
    radial-gradient(circle at 0 0, #6b645c 1.4px, transparent 2px) 0 0 / 100% 100% no-repeat,
    radial-gradient(circle at 100% 0, #6b645c 1.4px, transparent 2px) 0 0 / 100% 100% no-repeat,
    radial-gradient(circle at 0 100%, #6b645c 1.4px, transparent 2px) 0 0 / 100% 100% no-repeat,
    radial-gradient(circle at 100% 100%, #6b645c 1.4px, transparent 2px) 0 0 / 100% 100% no-repeat;
}
.skilt a, .skilt .her {
  display: grid; grid-template-columns: 1.4rem 1fr; align-items: center;
  padding: .42rem 1rem .42rem .8rem; text-decoration: none;
  border-top: 1px solid rgba(231,224,210,.12);
}
.skilt > :first-child { border-top: 0; }
.skilt a .pil { transition: transform .5s var(--ease); display: inline-block; }
.skilt a:hover .pil { transform: translateX(4px); }
.skilt a:hover { background: rgba(231,224,210,.06); }
.skilt .her { color: var(--gull); }
.skilt .her .pil { width: .5rem; height: .5rem; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 3px rgba(179,38,30,.25); }
.skilt-knapp { display: none; }

@media (max-width: 720px) {
  .ordmerke b { font-size: 1.08rem; }
  .skilt { min-width: 0; padding: 0; }
  .skilt-knapp {
    display: grid; grid-template-columns: auto auto; gap: .6rem; align-items: center;
    padding: .55rem .8rem; font-family: var(--f-arkiv); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--kalk);
  }
  .skilt-knapp i { font-style: normal; transition: transform .5s var(--ease); display: inline-block; }
  .skilt a, .skilt .her { display: none; }
  .skilt.apen a, .skilt.apen .her { display: grid; }
  .skilt.apen .skilt-knapp i { transform: rotate(180deg); }
}

/* ---------- Døråpningen: overgang mellom sidene ---------- */
.dor {
  position: fixed; inset: 0; z-index: 200; pointer-events: none; visibility: hidden;
}
.dor .gang { position: absolute; inset: 0; background: var(--blekk); clip-path: inset(50% 50% 50% 50%); }
.dor .blad { position: absolute; top: 0; bottom: 0; width: 50.5%; background: var(--blekk); }
.dor .blad.v { left: 0; box-shadow: inset -1px 0 0 rgba(184,145,58,.5); }
.dor .blad.h { right: 0; box-shadow: inset 1px 0 0 rgba(184,145,58,.5); }
.dor .blad { display: none; }

/* ut: døråpningen vokser fra der du trykket */
.dor.ut { visibility: visible; pointer-events: all; }
.dor.ut .gang { transition: clip-path .72s var(--ease-inn); clip-path: inset(0 0 0 0); }

/* inn: to dørblad glir fra hverandre */
html.dor-inn .dor { visibility: visible; }
html.dor-inn .dor .gang { display: none; }
html.dor-inn .dor .blad { display: block; }
html.dor-inn.dor-apner .dor .blad { transition: transform 1s var(--ease); }
html.dor-inn.dor-apner .dor .blad.v { transform: translateX(-101%); }
html.dor-inn.dor-apner .dor .blad.h { transform: translateX(101%); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}