/* =========================================================
   ZENTRIX · THE GALLERY — 3D walkthrough exhibition
   ========================================================= */

:root {
  --ink:        #0d0d0f;
  --ink-soft:   #16161a;
  --bone:       #ece7dc;
  --bone-soft:  rgba(236, 231, 220, 0.66);
  --bone-mute:  rgba(236, 231, 220, 0.4);
  --brass:      #c7964a;
  --brass-lt:   #e0bb78;
  --accent:     #D6FF3F;
  --accent-soft:rgba(214, 255, 63, 0.3);

  --display: "Fraunces", Georgia, serif;
  --sans:    "Archivo", Helvetica, Arial, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, Menlo, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body.gallery {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--bone);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; padding: 0; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--ink); }

/* ── AMBIENT ── */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 90;
  opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .8 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.vignette {
  position: fixed; inset: 0; pointer-events: none; z-index: 91;
  background: radial-gradient(ellipse 100% 80% at 50% 50%, transparent 50%, rgba(0,0,0,.55) 100%);
}

#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 1; display: block; cursor: grab; }
#gl.grabbing { cursor: grabbing; }
#gl.pointing { cursor: pointer; }

/* ── LOADING ── */
.loading {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at center, #1a1a1f 0%, #0d0d0f 100%);
  transition: opacity 0.6s ease;
}
.loading.is-done { opacity: 0; pointer-events: none; }
.loading-inner { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.loading-lbl { font-family: var(--mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--bone-mute); }
.loading-status { font-family: var(--display); font-size: 26px; color: var(--bone); }
.loading-bar { width: 280px; height: 2px; background: rgba(255,255,255,0.07); overflow: hidden; }
.lb-fill { display: block; height: 100%; width: 0%; background: var(--accent); box-shadow: 0 0 8px var(--accent-soft); transition: width 0.2s ease; }

/* ── INTRO GATE ── */
.intro {
  position: fixed; inset: 0; z-index: 150;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.8s ease;
}
.intro[hidden] { display: none; }
.intro.is-hidden { opacity: 0; pointer-events: none; }
.intro-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 45%, rgba(28,28,34,0.4) 0%, rgba(13,13,15,0.85) 100%);
  backdrop-filter: blur(2px);
}
.intro-content { position: relative; z-index: 2; text-align: center; max-width: 620px; padding: 40px; }
.intro-eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--brass-lt); }
.intro-title { font-family: var(--display); font-weight: 400; font-size: clamp(64px, 9vw, 128px); line-height: 0.95; letter-spacing: -0.02em; margin: 18px 0 0; color: var(--bone); }
.intro-sub { font-family: var(--sans); font-size: 17px; line-height: 1.6; color: var(--bone-soft); margin: 24px auto 36px; max-width: 460px; }
.enter-btn {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase;
  background: var(--accent); color: var(--ink); font-weight: 600;
  padding: 16px 28px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 10px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s ease;
  box-shadow: 0 10px 40px -10px var(--accent-soft);
}
.enter-btn:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 16px 50px -10px var(--accent-soft); }
.intro-hint { display: block; margin-top: 22px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-mute); }

/* ── HUD ── */
.hud {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  padding: 18px 26px;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--bone-soft);
  background: linear-gradient(0deg, rgba(13,13,15,0.8) 0%, transparent 100%);
  opacity: 0; pointer-events: none; transition: opacity 0.6s ease;
}
.hud.is-on { opacity: 1; pointer-events: auto; }
.hud-left, .hud-right { display: flex; align-items: center; gap: 12px; }
.hud-right { justify-content: flex-end; }
.hud-center { text-align: center; }
.hud-id { color: var(--bone); font-weight: 600; }
.hud-sep { color: rgba(236,231,220,.2); }
.hud-hint { color: var(--bone-mute); }
.hud-hint kbd { font-family: var(--mono); font-size: 9px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.13); border-radius: 4px; padding: 2px 6px; color: var(--bone-soft); margin: 0 2px; }
.hud-btn { font-family: var(--mono); font-size: 9px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-soft); border: 1px solid rgba(236,231,220,0.16); padding: 7px 12px; border-radius: 999px; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s ease; }
.hud-btn:hover { color: var(--accent); border-color: var(--accent-soft); }

/* ── HOVER LABEL ── */
.hover-label {
  position: fixed; z-index: 70; pointer-events: none;
  transform: translate(-50%, calc(-100% - 16px));
  padding: 9px 13px; border-radius: 8px;
  background: rgba(13,13,15,0.92); backdrop-filter: blur(6px);
  border: 1px solid rgba(199,150,74,0.3);
  display: flex; flex-direction: column; gap: 3px;
  opacity: 0; transition: opacity 0.15s ease;
  min-width: 180px;
}
.hover-label.is-on { opacity: 1; }
.hl-num { font-family: var(--mono); font-size: 9px; letter-spacing: 0.22em; color: var(--brass-lt); }
.hl-name { font-family: var(--display); font-size: 18px; color: var(--bone); }
.hl-meta { font-family: var(--mono); font-size: 10px; color: var(--bone-mute); }

/* ── DETAIL PANEL ── */
.panel {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 120;
  width: 380px; max-width: 90vw;
  background: rgba(18,18,22,0.94); backdrop-filter: blur(16px);
  border-left: 1px solid rgba(199,150,74,0.2);
  padding: 64px 34px 34px;
  display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 0.5s var(--ease);
  box-shadow: -20px 0 60px -20px rgba(0,0,0,0.6);
}
.panel[hidden] { display: none; }
.panel.is-open { transform: translateX(0); }
.panel-close { position: absolute; top: 22px; right: 22px; width: 34px; height: 34px; border: 1px solid rgba(236,231,220,0.18); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--bone-soft); transition: all 0.2s; }
.panel-close:hover { color: var(--accent); border-color: var(--accent); }
.panel-num { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; color: var(--brass-lt); }
.panel-name { font-family: var(--display); font-weight: 600; font-size: 40px; line-height: 1.0; letter-spacing: -0.02em; margin: 12px 0 14px; color: var(--bone); }
.panel-vibe { font-family: var(--display); font-style: italic; font-size: 17px; line-height: 1.5; color: var(--bone-soft); margin: 0 0 26px; }
.panel-meta { display: flex; flex-direction: column; gap: 0; border-top: 1px solid rgba(236,231,220,0.1); }
.pm-row { display: grid; grid-template-columns: 96px 1fr; gap: 12px; padding: 13px 0; border-bottom: 1px solid rgba(236,231,220,0.1); align-items: baseline; }
.pm-k { font-family: var(--mono); font-size: 9px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-mute); }
.pm-v { font-family: var(--sans); font-size: 13.5px; color: var(--bone); }
.pm-link { font-family: var(--mono); font-size: 12px; color: var(--brass-lt); text-decoration: underline; text-decoration-color: rgba(199,150,74,0.3); }
.pm-link:hover { color: var(--accent); }
.panel-enter { margin-top: 28px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; background: var(--accent); color: var(--ink); font-weight: 600; padding: 15px 22px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; transition: transform 0.2s ease; }
.panel-enter:hover { transform: translateY(-2px) scale(1.02); }
.panel-nav { margin-top: auto; padding-top: 24px; display: flex; align-items: center; justify-content: space-between; }
.pn-btn { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--bone-soft); transition: color 0.2s; }
.pn-btn:hover { color: var(--accent); }
.pn-pos { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; color: var(--bone-mute); }

/* ── MODAL ── */
.modal { position: fixed; inset: 0; z-index: 220; display: flex; align-items: center; justify-content: center; padding: 36px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(8,8,10,0.94); backdrop-filter: blur(12px); opacity: 0; transition: opacity 0.35s ease; }
.modal.is-open .modal-backdrop { opacity: 1; }
.modal-card { position: relative; z-index: 2; width: 100%; max-width: 1340px; height: 100%; display: flex; flex-direction: column; background: var(--ink-soft); border: 1px solid rgba(199,150,74,0.18); border-radius: 12px; overflow: hidden; box-shadow: 0 40px 100px -20px rgba(0,0,0,0.7); transform: translateY(20px) scale(0.98); opacity: 0; transition: transform 0.5s var(--ease), opacity 0.4s ease; }
.modal.is-open .modal-card { transform: translateY(0) scale(1); opacity: 1; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid rgba(255,255,255,0.07); }
.mh-left { display: flex; align-items: baseline; gap: 12px; }
.mh-name { font-family: var(--display); font-weight: 600; font-size: 20px; color: var(--bone); }
.mh-meta { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; color: var(--bone-mute); }
.mh-right { display: flex; align-items: center; gap: 8px; }
.mh-btn { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-soft); border: 1px solid rgba(255,255,255,0.14); padding: 8px 14px; border-radius: 999px; display: inline-flex; align-items: center; gap: 8px; transition: all 0.2s; }
.mh-btn:hover { color: var(--bone); border-color: var(--bone-mute); }
.mh-cta { background: var(--accent); color: var(--ink); border-color: var(--accent); font-weight: 600; }
.mh-cta:hover { color: var(--ink); }
.mh-close { width: 32px; height: 32px; padding: 0; justify-content: center; }
.mh-close:hover { border-color: var(--accent); color: var(--accent); }
.modal-frame { flex: 1; background: #fff; }
.modal-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

/* ── MOBILE 2D FALLBACK ── */
.mobile { display: none; }
@media (max-width: 1024px), (pointer: coarse) {
  body.gallery > .grain, body.gallery > .vignette, body.gallery > #gl,
  body.gallery > .loading, body.gallery > .intro, body.gallery > .hud,
  body.gallery > .hover-label, body.gallery > .panel, body.gallery > .modal { display: none !important; }
  body.gallery { overflow-y: auto; }
  .mobile { display: block; padding: 0 0 60px; }
}
.mobile-head { padding: 56px 24px 32px; text-align: center; }
.mobile-eyebrow { font-family: var(--mono); font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--brass-lt); }
.mobile-head h1 { font-family: var(--display); font-weight: 600; font-size: 40px; letter-spacing: -0.02em; margin: 12px 0; color: var(--bone); }
.mobile-head p { font-family: var(--sans); font-size: 14px; line-height: 1.6; color: var(--bone-soft); max-width: 32ch; margin: 0 auto; }
.mobile-grid { display: grid; grid-template-columns: 1fr; gap: 18px; padding: 0 18px; }
.m-card { background: var(--ink-soft); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; overflow: hidden; }
.m-card-img { aspect-ratio: 16/10; background: #222; overflow: hidden; }
.m-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.m-card-body { padding: 16px 18px 18px; }
.m-card-num { font-family: var(--mono); font-size: 9px; letter-spacing: 0.2em; color: var(--brass-lt); }
.m-card-name { font-family: var(--display); font-weight: 600; font-size: 22px; margin: 6px 0 4px; color: var(--bone); }
.m-card-meta { font-family: var(--mono); font-size: 11px; color: var(--bone-mute); margin-bottom: 12px; }
.m-card-link { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.mobile-foot { text-align: center; padding: 40px 24px 0; }
.mobile-foot a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-soft); }