/* ============================================================
   THE DIGITAL MUSEUM · design system
   Reference: Barbican / Tate wayfinding. Near-black hall,
   white ink, one curator red for wayfinding and action.
   Type: Gloock (plaque didone) + Archivo (signage grotesque).
   ============================================================ */

:root{
  --bg:        oklch(0.145 0.008 60);   /* dim gallery wall */
  --bg-deep:   oklch(0.11 0.006 60);    /* darker rooms */
  --surface:   oklch(0.185 0.009 65);   /* panels, slabs */
  --surface-2: oklch(0.225 0.01 70);    /* raised slabs */
  --line:      oklch(0.32 0.012 70 / .55);
  --line-soft: oklch(0.30 0.01 70 / .3);
  --ink:       oklch(0.955 0.006 80);   /* warm white */
  --ink-soft:  oklch(0.80 0.008 75);
  --ink-mute:  oklch(0.67 0.01 70);
  --red:       oklch(0.62 0.21 31);     /* curator red */
  --red-hover: oklch(0.68 0.21 33);
  --red-deep:  oklch(0.5 0.19 30);
  --spot:      oklch(0.97 0.03 85);     /* spotlight warm */

  --font-display:'Gloock', 'Times New Roman', serif;
  --font-body:'Archivo', system-ui, sans-serif;

  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --step-1: clamp(1.25rem, 1.15rem + 0.5vw, 1.55rem);
  --step-2: clamp(1.6rem, 1.4rem + 1vw, 2.2rem);
  --step-3: clamp(2.1rem, 1.7rem + 2vw, 3.4rem);
  --step-4: clamp(2.7rem, 2rem + 3.4vw, 5rem);

  --space-room: clamp(6rem, 5rem + 8vw, 12rem);
  --pad-x: clamp(1.25rem, 4vw, 4rem);

  /* z scale */
  --z-nav: 40;
  --z-overlay-backdrop: 60;
  --z-overlay: 61;
}

*{ box-sizing:border-box; margin:0; padding:0 }
html{ scroll-behavior:smooth }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto } }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:var(--step-0);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

::selection{ background:var(--red); color:var(--ink) }

h1,h2,h3{ text-wrap:balance }
img{ max-width:100%; height:auto; display:block }
a{ color:inherit }
button{ font:inherit; color:inherit; cursor:pointer; background:none; border:0 }

/* ---------- wayfinding: the room plaque system ---------- */
.room-plaque{
  display:inline-flex; align-items:center;
  border:1px solid var(--line);
  font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-soft); font-weight:500;
  margin-bottom:1.4rem; line-height:1; white-space:nowrap;
  padding-right:.9em;
}
.room-plaque b{
  display:flex; align-items:center;
  background:var(--red); color:var(--ink);
  font-weight:700; padding:.55em .7em; margin-right:.8em;
}

.room-chip{
  display:inline-block; background:var(--red); color:var(--ink);
  font-size:.7rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  padding:.45em .7em; margin-right:.75em;
}

/* ---------- shared ---------- */
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}

.skip-link{
  position:fixed; top:-4rem; left:1rem; z-index:100;
  background:var(--red); color:var(--ink); text-decoration:none;
  padding:.7em 1.1em; font-weight:600; transition:top .2s ease-out;
}
.skip-link:focus{ top:1rem }

.museum-button{
  display:inline-flex; align-items:center; gap:.6em;
  background:var(--red); color:var(--ink); text-decoration:none;
  font-weight:600; font-size:.95rem; letter-spacing:.02em;
  padding:.85em 1.5em; border:1px solid transparent;
  transition:background .18s cubic-bezier(.22,1,.36,1), transform .18s cubic-bezier(.22,1,.36,1);
}
.museum-button:hover{ background:var(--red-hover); transform:translateY(-2px) }
.museum-button:active{ transform:translateY(0) }
.museum-button:focus-visible{ outline:2px solid var(--spot); outline-offset:3px }

.ghost-button{
  display:inline-flex; align-items:center; gap:.6em;
  border:1px solid var(--line); color:var(--ink-soft); text-decoration:none;
  font-weight:500; font-size:.95rem; padding:.85em 1.5em;
  transition:border-color .18s ease-out, color .18s ease-out;
}
.ghost-button:hover{ border-color:var(--ink-soft); color:var(--ink) }
.ghost-button:focus-visible{ outline:2px solid var(--spot); outline-offset:3px }

.section-heading{
  display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between;
  gap:1.5rem 3rem; padding:0 var(--pad-x); margin-bottom:clamp(2.5rem,4vw,4rem);
}
.section-heading h2{ font-family:var(--font-display); font-weight:400; font-size:var(--step-3); letter-spacing:-.01em; max-width:18ch }
.heading-note{ max-width:44ch; color:var(--ink-mute); font-size:.98rem; align-self:flex-end }

section{ position:relative }

/* ---------- topbar ---------- */
.topbar{
  position:fixed; top:0; left:0; right:0; z-index:var(--z-nav);
  display:flex; align-items:center; justify-content:space-between;
  padding:.9rem var(--pad-x);
  background:linear-gradient(oklch(0.11 0.006 60 / .88), oklch(0.11 0.006 60 / .6) 70%, transparent);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.wordmark{ display:flex; align-items:center; gap:.75rem; text-decoration:none }
.wordmark-mark{
  width:.85rem; height:.85rem; background:var(--red); flex:none;
  transition:transform .3s cubic-bezier(.22,1,.36,1);
}
.wordmark:hover .wordmark-mark{ transform:rotate(45deg) }
.wordmark-text{
  font-weight:700; font-size:.8rem; letter-spacing:.16em; line-height:1.3;
  display:flex; flex-direction:column;
}
.wordmark-text i{
  font-family:var(--font-display); font-style:normal; font-weight:400;
  font-size:.72rem; letter-spacing:.05em; color:var(--ink-mute); text-transform:none;
}
.topbar nav{ display:flex; align-items:center; gap:clamp(.9rem,2vw,1.8rem) }
.topbar nav a{
  text-decoration:none; font-size:.86rem; font-weight:500; color:var(--ink-soft);
  transition:color .15s ease-out;
}
.topbar nav a:hover{ color:var(--ink) }
.topbar nav a.nav-cta{
  color:var(--ink); border:1px solid var(--red); padding:.5em 1em;
  transition:background .15s ease-out;
}
.topbar nav a.nav-cta:hover{ background:var(--red) }
.menu-button{ display:none; border:1px solid var(--line); padding:.5em 1em; font-size:.86rem }

@media (max-width: 860px){
  .menu-button{ display:block }
  .topbar nav{
    position:absolute; top:100%; right:var(--pad-x);
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--bg-deep); border:1px solid var(--line);
    min-width:14rem; display:none;
  }
  .topbar nav.is-open{ display:flex }
  .topbar nav a{ padding:.9em 1.2em; border-bottom:1px solid var(--line-soft) }
  .topbar nav a.nav-cta{ border:0; background:var(--red) }
}

/* ============================================================
   ROOM 1 · GALLERY HALL
   ============================================================ */
.hall-scroll{ height:520svh }
.hall-sticky{
  position:sticky; top:0; height:100svh; overflow:hidden;
  background:var(--bg-deep);
}
.hall-world, #museum-canvas{ position:absolute; inset:0; width:100%; height:100% }
#museum-canvas{ display:block; pointer-events:auto; touch-action:pan-y }
.hall-vignette{
  position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 90% 75% at 50% 45%, transparent 55%, oklch(0.08 0.005 60 / .75));
}
.hall-loading{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  background:var(--bg-deep); z-index:3;
  font-family:var(--font-display); font-size:var(--step-1); color:var(--ink-soft);
  transition:opacity .6s ease-out; letter-spacing:.02em;
}
.hall-loading.is-done{ opacity:0; pointer-events:none }

.hall-heading{
  position:absolute; top:calc(4.5rem + 2vh); left:var(--pad-x); z-index:2;
  max-width:34rem; pointer-events:none;
}
.hall-heading .room-plaque{ pointer-events:auto }
.hall-heading h1{
  font-family:var(--font-display); font-weight:400;
  font-size:var(--step-4); line-height:1.04; letter-spacing:-.015em;
  text-shadow:0 2px 30px oklch(0.08 0.005 60 / .8);
}
.hall-sub{
  margin-top:1rem; max-width:42ch; color:var(--ink-soft); font-size:1rem;
  text-shadow:0 1px 12px oklch(0.08 0.005 60 / .9);
}

.exhibit-caption{
  position:absolute; right:var(--pad-x); bottom:clamp(5.5rem, 12vh, 8rem); z-index:2;
  background:oklch(0.13 0.007 60 / .82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  padding:1.5rem 1.75rem; max-width:24rem;
  transition:opacity .35s ease-out, transform .35s cubic-bezier(.22,1,.36,1);
}
.exhibit-caption.is-walking{ opacity:0; transform:translateY(12px); pointer-events:none }
.caption-count{
  font-size:.75rem; font-weight:700; letter-spacing:.18em; color:var(--red);
}
.exhibit-caption h2{
  font-family:var(--font-display); font-weight:400; font-size:var(--step-2);
  margin:.35rem 0 .4rem;
}
.exhibit-caption p{ color:var(--ink-soft); font-size:.92rem; margin-bottom:1.1rem }

.hall-controls{
  position:absolute; left:50%; transform:translateX(-50%); bottom:2rem; z-index:2;
  display:flex; align-items:center; gap:1.1rem;
}
.hall-controls > button{
  width:2.9rem; height:2.9rem; border:1px solid var(--line);
  background:oklch(0.13 0.007 60 / .7); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  font-size:1.05rem; color:var(--ink-soft);
  transition:border-color .15s ease-out, color .15s ease-out, background .15s ease-out;
}
.hall-controls > button:hover:not(:disabled){ border-color:var(--red); color:var(--ink); background:oklch(0.18 0.01 60 / .8) }
.hall-controls > button:disabled{ opacity:.35; cursor:default }
.hall-controls > button:focus-visible{ outline:2px solid var(--spot); outline-offset:3px }
.hall-stops{ display:flex; gap:.55rem }
.hall-stops i{
  width:.5rem; height:.5rem; background:var(--line); transform:rotate(45deg);
  transition:background .2s ease-out, transform .2s ease-out;
}
.hall-stops i.is-current{ background:var(--red); transform:rotate(45deg) scale(1.35) }

.hall-instruction{
  position:absolute; left:var(--pad-x); bottom:2.2rem; z-index:2;
  display:flex; align-items:center; gap:.7rem;
  font-size:.82rem; letter-spacing:.06em; color:var(--ink-mute);
  transition:opacity .4s ease-out;
}
.hall-instruction.is-hidden{ opacity:0 }
.scroll-glyph{
  width:1.1rem; height:1.8rem; border:1px solid var(--line); border-radius:.6rem;
  position:relative;
}
.scroll-glyph::after{
  content:""; position:absolute; left:50%; top:.35rem; width:2px; height:.45rem;
  background:var(--red); transform:translateX(-50%);
  animation:scrollwheel 1.8s cubic-bezier(.45,0,.55,1) infinite;
}
@keyframes scrollwheel{
  0%{ transform:translate(-50%,0); opacity:1 }
  70%{ transform:translate(-50%,.55rem); opacity:0 }
  100%{ transform:translate(-50%,0); opacity:0 }
}
@media (prefers-reduced-motion: reduce){
  .scroll-glyph::after{ animation:none }
}

@media (max-width: 720px){
  .hall-heading{ right:var(--pad-x); max-width:none }
  .hall-heading h1{ font-size:var(--step-3) }
  .exhibit-caption{
    left:var(--pad-x); right:var(--pad-x); max-width:none;
    bottom:6.2rem; padding:1.1rem 1.25rem;
  }
  .hall-instruction{ display:none }
  .hall-controls{ bottom:1.4rem }
}

/* ---------- exhibit viewing room ---------- */
.exhibit-overlay{ position:fixed; inset:0; z-index:var(--z-overlay) }
.exhibit-overlay[hidden]{ display:none }
.overlay-backdrop{
  position:absolute; inset:0; z-index:0;
  background:oklch(0.07 0.005 60 / .85);
  backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  animation:fadein .3s ease-out;
}
.viewing-room{
  position:relative; z-index:1;
  width:min(96rem, calc(100vw - 2rem));
  height:calc(100svh - 2rem);
  margin:1rem auto;
  display:flex; flex-direction:column;
  background:var(--surface); border:1px solid var(--line);
  box-shadow:0 40px 120px oklch(0.05 0 0 / .65);
  animation:cardin .45s cubic-bezier(.22,1,.36,1);
}
@keyframes fadein{ from{ opacity:0 } }
@keyframes cardin{ from{ opacity:0; transform:translateY(20px) } }
@media (prefers-reduced-motion: reduce){
  .overlay-backdrop,.viewing-room{ animation:none }
}
.viewing-bar{
  display:flex; align-items:center; gap:1.5rem; flex-wrap:wrap;
  padding:.85rem 1.25rem;
  border-bottom:1px solid var(--line);
  background:var(--bg-deep);
}
.viewing-plaque{ display:flex; align-items:center; gap:1rem }
.overlay-count{ font-size:.75rem; font-weight:700; letter-spacing:.18em; color:var(--red) }
.viewing-plaque h3{ font-family:var(--font-display); font-weight:400; font-size:1.35rem; line-height:1.05 }
#overlay-category{ color:var(--ink-mute); font-size:.8rem }
.viewing-note{ color:var(--ink-soft); font-size:.85rem; max-width:34ch }
.viewing-actions{ display:flex; gap:.7rem; margin-left:auto }
.leave-button{ background:var(--red) }
.viewing-stage{
  position:relative; flex:1; min-height:0; background:var(--bg-deep);
}
.viewing-stage iframe{
  position:absolute; inset:0; width:100%; height:100%; border:0; background:#fff;
}
.stage-loading{
  position:absolute; inset:0; z-index:1;
  display:flex; align-items:center; justify-content:center;
  background:var(--bg-deep);
  font-family:var(--font-display); font-size:var(--step-1); color:var(--ink-soft);
  transition:opacity .5s ease-out;
}
.stage-loading.is-done{ opacity:0; pointer-events:none }
.stage-fallback{
  position:absolute; inset:0; display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  grid-template-rows:minmax(0,1fr);
  overflow:hidden;
}
.stage-fallback img{ width:100%; height:100%; min-height:0; object-fit:cover; object-position:top }
.stage-fallback-note{
  display:flex; flex-direction:column; justify-content:center; gap:1.2rem;
  padding:clamp(1.5rem,3vw,3rem); background:var(--surface); min-height:0;
}
.stage-fallback-note p{ color:var(--ink-soft); font-size:.95rem; max-width:38ch }
.stage-fallback-note .museum-button{ align-self:flex-start }
.reserved-drape{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:.6rem; color:var(--ink-mute);
  background:repeating-linear-gradient(-45deg, var(--bg-deep), var(--bg-deep) 14px, oklch(0.135 0.007 60) 14px, oklch(0.135 0.007 60) 28px);
}
.reserved-drape strong{
  font-family:var(--font-display); font-weight:400; font-size:var(--step-2); color:var(--ink-soft);
}
.overlay-hint{
  font-size:.75rem; color:var(--ink-mute); text-align:center;
  padding:.55rem 1rem; border-top:1px solid var(--line-soft); background:var(--bg-deep);
}
@media (max-width: 760px){
  .viewing-room{ width:calc(100vw - 1rem); height:calc(100svh - 1rem); margin:.5rem auto }
  .viewing-bar{ gap:.6rem; padding:.7rem .9rem }
  .viewing-note{ display:none }
  .viewing-actions{ width:100%; margin-left:0 }
  .viewing-actions > *{ flex:1; justify-content:center }
  .stage-fallback{ grid-template-columns:1fr; grid-template-rows:1fr auto }
}

/* ============================================================
   ROOM 2 · THE CURATOR
   ============================================================ */
.curator-room{
  display:grid; grid-template-columns: minmax(20rem, 4fr) 5fr;
  gap:clamp(2.5rem,5vw,6rem); align-items:center;
  padding:var(--space-room) var(--pad-x);
  background:linear-gradient(var(--bg-deep), var(--bg) 18%);
}
.curator-portrait{ position:relative; display:flex; justify-content:center }
.portrait-light{
  position:absolute; top:-18%; left:50%; transform:translateX(-50%);
  width:130%; aspect-ratio:1; pointer-events:none;
  background:radial-gradient(ellipse 50% 62% at 50% 30%, oklch(0.97 0.03 85 / .1), transparent 70%);
}
.portrait-frame{
  position:relative; width:min(22rem, 80vw);
  border:12px solid oklch(0.24 0.014 70);
  outline:1px solid oklch(0.42 0.03 75 / .6);
  box-shadow:0 30px 80px oklch(0.05 0 0 / .55);
  background:oklch(0.93 0.006 80); /* museum matting */
  padding:clamp(1rem, 2vw, 1.6rem);
}
.portrait-frame img{
  width:100%; aspect-ratio:4/5; object-fit:cover; object-position:50% 18%;
  filter:saturate(.97) contrast(1.02);
  box-shadow:inset 0 0 0 1px oklch(0.1 0.005 60 / .3);
}
.portrait-plaque{
  position:absolute; left:50%; bottom:-3.2rem; transform:translateX(-50%);
  background:var(--surface-2); border:1px solid var(--line);
  padding:.7rem 1.3rem; text-align:center; white-space:nowrap;
}
.portrait-plaque strong{ display:block; font-weight:700; font-size:.92rem; letter-spacing:.04em }
.portrait-plaque span{ display:block; font-size:.76rem; color:var(--ink-mute); margin-top:.15rem }

.curator-copy h2{
  font-family:var(--font-display); font-weight:400; font-size:var(--step-3);
  letter-spacing:-.01em; max-width:20ch; margin-bottom:1.3rem;
}
.curator-lede{ font-size:var(--step-1); line-height:1.5; color:var(--ink); max-width:56ch; margin-bottom:1rem; font-weight:350 }
.curator-copy > p:not(.curator-lede):not(.room-plaque){ color:var(--ink-soft); max-width:60ch }
.curator-proof{
  list-style:none; display:grid; grid-template-columns:repeat(auto-fit, minmax(11rem,1fr));
  gap:1px; background:var(--line-soft); border:1px solid var(--line-soft);
  margin:2rem 0;
}
.curator-proof li{ background:var(--bg); padding:1.1rem 1.2rem }
.curator-proof strong{
  display:block; font-family:var(--font-display); font-weight:400;
  font-size:var(--step-2); color:var(--ink); line-height:1.1;
}
.curator-proof span{ font-size:.82rem; color:var(--ink-mute) }
.curator-actions{ display:flex; flex-wrap:wrap; gap:.9rem }

@media (max-width: 900px){
  .curator-room{ grid-template-columns:1fr; padding-top:calc(var(--space-room) * .7) }
  .curator-portrait{ margin-bottom:3.5rem }
}

/* ============================================================
   ROOM 3 · PERMANENT COLLECTION
   ============================================================ */
.collection-hall{ padding:var(--space-room) 0 }
.collection-hall .section-heading{ padding:0 var(--pad-x) }
.rail-controls{ display:flex; gap:.6rem }
.rail-controls button{
  width:2.9rem; height:2.9rem; border:1px solid var(--line); color:var(--ink-soft);
  transition:border-color .15s ease-out, color .15s ease-out;
}
.rail-controls button:hover{ border-color:var(--red); color:var(--ink) }
.rail-controls button:focus-visible{ outline:2px solid var(--spot); outline-offset:3px }

.project-rail{
  display:flex; gap:clamp(1.2rem,2.5vw,2.2rem);
  overflow-x:auto; scroll-snap-type:x mandatory;
  padding:1.5rem var(--pad-x) 2.2rem;
  scrollbar-width:thin; scrollbar-color:var(--line) transparent;
}
.project-rail:focus-visible{ outline:2px solid var(--spot); outline-offset:-2px }
.project-frame{
  flex:none; width:min(26rem, 78vw); scroll-snap-align:center;
  text-align:left; position:relative; padding:0;
  transition:transform .3s cubic-bezier(.22,1,.36,1);
}
.project-frame:hover{ transform:translateY(-6px) }
.project-frame:focus-visible{ outline:2px solid var(--spot); outline-offset:6px }
.frame-light{
  position:absolute; top:-2.4rem; left:50%; transform:translateX(-50%);
  width:85%; height:5rem; pointer-events:none; opacity:0;
  background:radial-gradient(ellipse 60% 100% at 50% 0%, oklch(0.97 0.03 85 / .16), transparent 75%);
  transition:opacity .3s ease-out;
}
.project-frame:hover .frame-light,
.project-frame.is-active .frame-light{ opacity:1 }
.frame-window{
  display:block; border:8px solid oklch(0.26 0.012 70); outline:1px solid var(--line);
  background:var(--bg-deep); aspect-ratio:16/10; overflow:hidden;
  box-shadow:0 20px 50px oklch(0.05 0 0 / .45);
}
.frame-window img{ width:100%; height:100%; object-fit:cover; object-position:top; transition:transform 3.5s cubic-bezier(.19,1,.22,1) }
.project-frame:hover .frame-window img{ transform:translateY(-4%) }
.frame-plaque{
  display:flex; flex-direction:column; gap:.1rem;
  margin:1rem auto 0; width:fit-content; text-align:center;
  background:var(--surface); border:1px solid var(--line-soft); padding:.55rem 1.1rem;
}
.project-frame.is-active .frame-plaque{ border-color:var(--red) }
.frame-plaque strong{ font-size:.9rem; letter-spacing:.03em }
.frame-plaque small{ color:var(--ink-mute); font-size:.76rem }
.rail-instruction{ text-align:center; color:var(--ink-mute); font-size:.85rem; padding:0 var(--pad-x) }

.exhibit-study{
  display:grid; grid-template-columns: minmax(18rem,2fr) 3fr;
  gap:clamp(2rem,4vw,5rem); align-items:center;
  padding:clamp(3rem,5vw,5rem) var(--pad-x) 0;
}
.study-kicker{ font-size:.78rem; font-weight:700; letter-spacing:.16em; text-transform:uppercase; color:var(--red) }
.study-copy h3{ font-family:var(--font-display); font-weight:400; font-size:var(--step-3); margin:.4rem 0 .2rem; line-height:1.05; overflow-wrap:anywhere }
.study-category{ color:var(--ink-mute); margin-bottom:1rem }
.study-description{ color:var(--ink-soft); max-width:48ch; margin-bottom:1.4rem }
.discipline-list{
  list-style:none; display:flex; flex-wrap:wrap; gap:.5rem; margin-bottom:1.8rem;
}
.discipline-list li{
  border:1px solid var(--line); padding:.35em .8em; font-size:.8rem; color:var(--ink-soft);
}
.browser-object{
  border:1px solid var(--line); background:var(--surface);
  box-shadow:0 30px 80px oklch(0.05 0 0 / .5);
}
.browser-bar{
  display:flex; align-items:center; gap:.45rem; padding:.7rem 1rem;
  border-bottom:1px solid var(--line-soft);
}
.browser-bar i{ width:.6rem; height:.6rem; border-radius:50%; background:var(--line) }
.browser-bar span{ margin-left:.8rem; font-size:.78rem; color:var(--ink-mute); letter-spacing:.04em }
.browser-screen{ aspect-ratio:16/10; overflow:hidden; background:var(--bg-deep) }
.browser-screen img{ width:100%; height:100%; object-fit:cover; object-position:top }
@media (max-width: 900px){
  .exhibit-study{ grid-template-columns:1fr }
}

/* ============================================================
   ROOM 4 · SCREENING ROOM
   ============================================================ */
.screening-room{
  padding:var(--space-room) var(--pad-x);
  background:var(--bg-deep);
}
.screening-room .section-heading{ padding:0 }
.clip-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(17rem, 1fr));
  gap:clamp(1.5rem,3vw,2.5rem);
}
.clip-exhibit{ display:flex; flex-direction:column }
.clip-frame{
  border:1px solid var(--line); background:#000;
  aspect-ratio:9/16; overflow:hidden; max-height:34rem;
}
.clip-frame video{ width:100%; height:100%; object-fit:cover; display:block }
.clip-plaque{ padding:.9rem .2rem 0 }
.clip-plaque span{ font-size:.72rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--red) }
.clip-plaque h3{ font-family:var(--font-display); font-weight:400; font-size:1.25rem; margin:.25rem 0 .1rem }
.clip-plaque p{ font-size:.85rem; color:var(--ink-mute) }
@media (min-width: 1100px){
  .clip-grid{ grid-template-columns:repeat(4, 1fr) }
}

/* ============================================================
   ROOM 5 · RECORDS ROOM
   ============================================================ */
.records-room{
  padding:var(--space-room) var(--pad-x);
  display:grid; grid-template-columns: minmax(18rem, 2fr) 3fr;
  gap:clamp(2.5rem,5vw,5rem); align-items:end;
}
.records-copy h2{
  font-family:var(--font-display); font-weight:400; font-size:var(--step-3);
  max-width:16ch; margin-bottom:1rem; letter-spacing:-.01em;
}
.records-copy p{ color:var(--ink-soft); max-width:44ch }
.breakout-plaque{
  margin-top:2rem; border:1px solid var(--line); border-left:none; border-right:none;
  padding:1rem 0; display:flex; flex-direction:column; gap:.2rem;
}
.breakout-plaque b{ font-size:.75rem; font-weight:700; letter-spacing:.16em; text-transform:uppercase; color:var(--red) }
.breakout-plaque strong{ font-family:var(--font-display); font-weight:400; font-size:var(--step-2) }

.chart-installation{
  display:flex; align-items:flex-end; gap:clamp(.5rem,1.5vw,1.2rem);
  height:clamp(16rem, 30vw, 24rem);
  border-bottom:1px solid var(--line);
  padding:0 .5rem;
}
.chart-column{
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:flex-end;
  gap:.6rem; height:100%; min-width:0;
}
.chart-column i{
  width:100%; height:var(--h); min-height:3px;
  background:oklch(0.34 0.014 70);
  transition:height 1.1s cubic-bezier(.22,1,.36,1);
}
.chart-column.is-peak i{ background:var(--red) }
.chart-installation:not(.is-shown) .chart-column i{ height:3px }
@media (prefers-reduced-motion: reduce){
  .chart-installation:not(.is-shown) .chart-column i{ height:var(--h) }
  .chart-column i{ transition:none }
}
.chart-value{ font-size:.78rem; color:var(--ink-mute); white-space:nowrap }
.chart-column.is-peak .chart-value{ color:var(--ink); font-weight:600 }
.chart-column small{ font-size:.78rem; color:var(--ink-mute); padding-bottom:.5rem }

.metrics-wall{
  grid-column:1 / -1;
  display:grid; grid-template-columns:repeat(auto-fit, minmax(10rem,1fr));
  gap:1px; background:var(--line-soft); border:1px solid var(--line-soft);
  margin-top:clamp(3rem,5vw,4.5rem);
}
.metric{ background:var(--bg); padding:1.4rem 1.4rem 1.2rem; display:flex; flex-direction:column-reverse; gap:.2rem }
.metric dd{ font-family:var(--font-display); font-weight:400; font-size:var(--step-2); line-height:1.1 }
.metric dt{ font-size:.8rem; color:var(--ink-mute) }
.records-note{
  grid-column:1 / -1; margin-top:1.2rem;
  font-size:.85rem; color:var(--ink-mute); max-width:72ch;
}
@media (max-width: 900px){
  .records-room{ grid-template-columns:1fr; align-items:start }
}

/* ============================================================
   ROOM 6 · COMMISSIONS
   ============================================================ */
.commissions-wing{
  padding:var(--space-room) var(--pad-x);
  background:linear-gradient(var(--bg) 60%, var(--bg-deep));
}
.commissions-wing .section-heading{ padding:0 }
.commission-group{
  display:grid; grid-template-columns: minmax(14rem, 1fr) 3.2fr;
  gap:clamp(2rem,4vw,4rem);
  padding:clamp(2.5rem,4vw,4rem) 0;
  border-top:1px solid var(--line-soft);
}
.group-label h3{ font-family:var(--font-display); font-weight:400; font-size:var(--step-2); margin-bottom:.8rem }
.group-label p{ color:var(--ink-mute); font-size:.92rem; max-width:32ch }
.pedestal-row{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(15.5rem, 1fr));
  gap:clamp(1.2rem,2vw,2rem); align-items:end;
}
.price-pedestal{ position:relative; display:flex; flex-direction:column }
.price-slab{
  background:var(--surface); border:1px solid var(--line);
  padding:1.6rem 1.5rem 1.4rem; flex:1;
  transition:transform .25s cubic-bezier(.22,1,.36,1), border-color .25s ease-out;
}
.price-pedestal:hover .price-slab{ transform:translateY(-5px); border-color:var(--ink-mute) }
.price-featured .price-slab{ border-color:var(--red); background:var(--surface-2) }
.popular-label{
  position:absolute; top:-.85rem; left:1.2rem; z-index:1;
  background:var(--red); color:var(--ink); font-size:.7rem; font-weight:700;
  letter-spacing:.12em; text-transform:uppercase; padding:.4em .8em;
}
.price-slab h4{ font-size:1.02rem; font-weight:600; letter-spacing:.02em }
.price{ display:flex; align-items:baseline; gap:.45rem; margin:.7rem 0 .3rem }
.price strong{ font-family:var(--font-display); font-weight:400; font-size:2.1rem }
.price span{ color:var(--ink-mute); font-size:.85rem }
.plan-note{ color:var(--ink-soft); font-size:.88rem; margin-bottom:1rem; min-height:2.6em }
.price-slab ul{ list-style:none; display:flex; flex-direction:column; gap:.45rem }
.price-slab li{
  font-size:.87rem; color:var(--ink-soft); padding-left:1.1rem; position:relative;
}
.price-slab li::before{
  content:""; position:absolute; left:0; top:.52em;
  width:.4rem; height:.4rem; background:var(--red); transform:rotate(45deg);
}
.pedestal-base{
  height:.9rem; margin:0 .9rem;
  background:linear-gradient(oklch(0.23 0.01 70), oklch(0.16 0.008 65));
  border:1px solid var(--line-soft); border-top:none;
}
.price-featured .pedestal-base{ height:1.7rem }
.pricing-note{
  margin-top:2.5rem; color:var(--ink-mute); font-size:.92rem; max-width:72ch;
}
.pricing-note{ border-top:1px solid var(--line-soft); padding-top:1.5rem }
@media (max-width: 980px){
  .commission-group{ grid-template-columns:1fr }
}

/* ============================================================
   ROOM 7 · VISIT
   ============================================================ */
.visit-room{
  position:relative; overflow:hidden;
  padding:var(--space-room) var(--pad-x);
  background:var(--bg-deep);
  display:grid; grid-template-columns: minmax(18rem,1fr) minmax(20rem,1fr);
  gap:clamp(2.5rem,6vw,7rem); align-items:center;
}
.visit-light{
  position:absolute; top:-30%; left:15%; width:45rem; height:45rem; pointer-events:none;
  background:radial-gradient(circle at center, oklch(0.97 0.03 85 / .07), transparent 65%);
}
.visit-copy h2{
  font-family:var(--font-display); font-weight:400; font-size:var(--step-3);
  max-width:16ch; margin-bottom:1.1rem; letter-spacing:-.01em;
}
.visit-copy p{ color:var(--ink-soft); max-width:44ch; margin-bottom:1.6rem }
.visit-mail{
  font-family:var(--font-display); font-size:var(--step-1);
  text-decoration:none; border-bottom:2px solid var(--red); padding-bottom:.15em;
  transition:color .15s ease-out;
}
.visit-mail:hover{ color:var(--red-hover) }
.inquiry-table{
  position:relative; background:var(--surface); border:1px solid var(--line);
  padding:clamp(1.5rem,3vw,2.5rem); display:flex; flex-direction:column; gap:1.2rem;
}
.inquiry-table label{
  display:flex; flex-direction:column; gap:.45rem;
  font-size:.85rem; font-weight:600; letter-spacing:.03em; color:var(--ink-soft);
}
.inquiry-table input, .inquiry-table textarea{
  background:var(--bg-deep); border:1px solid var(--line); color:var(--ink);
  font:inherit; font-weight:400; padding:.75em .9em; resize:vertical;
  transition:border-color .15s ease-out;
}
.inquiry-table input:focus-visible, .inquiry-table textarea:focus-visible{
  outline:none; border-color:var(--red);
}
.inquiry-table .museum-button{ align-self:flex-start; border:0 }
.hp-field{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden }
.form-status{ font-size:.88rem; color:var(--ink-soft); min-height:1.2em; margin:0 }
.form-status.is-error{ color:var(--red-hover) }
@media (max-width: 900px){
  .visit-room{ grid-template-columns:1fr }
}

/* ---------- footer ---------- */
footer{
  padding:3rem var(--pad-x) 4rem;
  border-top:1px solid var(--line-soft);
  display:flex; flex-wrap:wrap; align-items:center; gap:1rem 3rem;
  background:var(--bg-deep);
}
footer p{ font-size:.8rem; color:var(--ink-mute) }
footer .wordmark{ margin-right:auto }

/* ---------- reveal on scroll ---------- */
.reveal{ opacity:1; transform:none }
@media (prefers-reduced-motion: no-preference){
  .reveal{
    opacity:0; transform:translateY(26px);
    transition:opacity .8s ease-out, transform .8s cubic-bezier(.22,1,.36,1);
  }
  .reveal.is-in{ opacity:1; transform:none }
}