/* ═══════════════════════════════════════════════════════════════════════
   OPUS·5 — showcase hub
   Deliberately quiet. Ten loud worlds sit inside it, so the frame around
   them is near-monochrome and gets out of the way.
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  --ink:   #0a0a0c;
  --ink2:  #121216;
  --paper: #e9e6df;
  --grey:  #86868f;
  --hair:  #24242a;
  --spark: #ff5b3a;

  --f-d: 'Instrument Serif', Georgia, serif;
  --f-b: 'Inter Tight', system-ui, sans-serif;
  --f-m: 'JetBrains Mono', ui-monospace, monospace;

  --gut: clamp(1.15rem, 4vw, 4.5rem);
  --stack: clamp(5.5rem, 13vh, 10rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--f-b);
  font-weight: 300;
  line-height: 1.65;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

#gl-bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; }

canvas, img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-weight: 400; line-height: 1.02; }
:focus-visible { outline: 2px solid var(--spark); outline-offset: 3px; }

.sp-w { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: 0.12em; }
.sp-wi { display: inline-block; }
[data-reveal] { opacity: 0; transform: translateY(1rem); }

.kick {
  font-family: var(--f-m); font-size: 0.6875rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--grey); margin-bottom: 1.25rem;
}
.kick.light { color: #86868f; }
.h2 { font-family: var(--f-d); font-size: clamp(2rem, 5.5vw, 4.5rem); letter-spacing: -0.01em; }
.body { max-width: 46ch; color: #e9e6dfb3; }

/* ─────────────────────────────────────────────────────────────── chrome */

.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1.5rem;
  padding: 1.1rem var(--gut);
  background: linear-gradient(#0a0a0ce6, transparent);
  transition: transform 0.55s var(--ease), opacity 0.4s var(--ease);
}
.top.is-away { transform: translateY(-130%); opacity: 0; }
.top__m { font-family: var(--f-d); font-size: 1.2rem; letter-spacing: 0.14em; padding: 0.3rem 0; }
.top__m span { color: var(--spark); }
.top__s {
  justify-self: center; font-family: var(--f-m); font-size: 0.625rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--grey);
}
.top__c {
  justify-self: end; font-family: var(--f-m); font-size: 0.625rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--grey);
  padding: 0.4rem 0; transition: color 0.3s;
}
.top__c:hover { color: var(--paper); }

/* ───────────────────────────────────────────────────────────────── hero */

.hero {
  min-height: 100svh; padding: 8rem var(--gut) 4rem;
  display: grid; align-content: center;
}
.hero__h {
  font-family: var(--f-d);
  font-size: clamp(3rem, 11vw, 10rem); line-height: 0.92; letter-spacing: -0.035em;
}
.hero__h .ln { display: block; overflow: hidden; }
.hero__h .ln > span { display: block; }
.hero__h em { font-style: italic; color: var(--spark); }
.hero__s { margin-top: 2rem; max-width: 48ch; color: #e9e6dfb8; font-size: clamp(1rem, 1.15vw, 1.15rem); }

.hero__stats {
  margin-top: clamp(2.5rem, 6vh, 4rem);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
  border-top: 1px solid var(--hair); padding-top: 1.5rem;
}
.hero__stats > div { display: grid; gap: 0.3rem; }
.hero__stats b { font-family: var(--f-d); font-size: clamp(1.9rem, 3.4vw, 3rem); font-weight: 400; }
.hero__stats span {
  font-family: var(--f-m); font-size: 0.625rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--grey);
}

/* ──────────────────────────────────────────────────────────────── index */

.index { padding: var(--stack) var(--gut); }
.index__head { margin-bottom: clamp(2.5rem, 6vh, 4rem); }
.index__note { margin-top: 1rem; color: var(--grey); font-size: 0.9rem; }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1.5rem, 3vw, 3rem); }

.card { display: grid; gap: 1.1rem; }
.card__f {
  position: relative; aspect-ratio: 3 / 2; overflow: hidden;
  background: var(--ink2); border: 1px solid var(--hair);
  transition: transform 0.7s var(--ease), border-color 0.7s var(--ease), box-shadow 0.7s var(--ease);
}
.card:hover .card__f {
  transform: translateY(-8px);
  border-color: #3a3a44;
  box-shadow: 0 40px 70px -40px #000000cc;
}

.card__img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.1s var(--ease), filter 0.7s var(--ease);
  filter: saturate(0.88) brightness(0.94);
}
.card:hover .card__img { transform: scale(1.035); filter: saturate(1) brightness(1); }

/* the live preview only mounts on hover, so ten WebGL sites never boot at once */
.card__live {
  position: absolute; inset: 0; border: 0; opacity: 0;
  transition: opacity 0.6s var(--ease); pointer-events: none;
}
.card__live.is-on { opacity: 1; }

.card__no {
  position: absolute; top: 0.85rem; left: 0.9rem; z-index: 3;
  font-family: var(--f-m); font-size: 0.625rem; letter-spacing: 0.16em;
  color: #fff; mix-blend-mode: difference;
}
.card__go {
  position: absolute; right: 0.85rem; bottom: 0.85rem; z-index: 3;
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.9rem; background: #0a0a0ce6; border: 1px solid #ffffff2e;
  font-family: var(--f-m); font-size: 0.5625rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--paper);
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}
.card:hover .card__go { opacity: 1; transform: translateY(0); }

.card__l { display: grid; gap: 0.35rem; }
.card__t { font-family: var(--f-d); font-size: clamp(1.4rem, 2.4vw, 2.1rem); letter-spacing: -0.005em; }
.card__d { font-size: 0.9rem; color: #e9e6dfa3; max-width: 46ch; }
.card__tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.5rem; }
.card__tags span {
  font-family: var(--f-m); font-size: 0.5625rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--grey);
  border: 1px solid var(--hair); padding: 0.2rem 0.5rem;
}

/* ────────────────────────────────────────────────────────────────── how */

.how { background: var(--ink2); border-top: 1px solid var(--hair); padding: var(--stack) var(--gut); }
.how__g { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); }
.how__h { font-family: var(--f-d); font-size: clamp(1.8rem, 4vw, 3.2rem); max-width: 14ch; }
.how__c { display: grid; gap: 1.25rem; align-content: start; }
.how__f { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 1rem 0 0; }
.how__f div { border-top: 1px solid var(--hair); padding-top: 0.85rem; display: grid; gap: 0.3rem; }
.how__f dt { font-family: var(--f-m); font-size: 0.5625rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--grey); }
.how__f dd { margin: 0; font-size: 0.9375rem; }

/* ──────────────────────────────────────────────────────────────── close */

.close { padding: var(--stack) var(--gut); display: grid; gap: 1.5rem; justify-items: start; }
.close__h { font-family: var(--f-d); font-size: clamp(1.9rem, 5vw, 4.2rem); max-width: 20ch; }
.close__cta {
  display: inline-flex; align-items: center; gap: 0.85rem;
  padding: 0.9rem 1.9rem; border: 1px solid var(--paper);
  font-family: var(--f-m); font-size: 0.625rem; letter-spacing: 0.16em; text-transform: uppercase;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
.close__cta:hover { background: var(--paper); color: var(--ink); }
.close__cta svg { transition: transform 0.4s var(--ease); }
.close__cta:hover svg { transform: translateX(5px); }

/* ───────────────────────────────────────────────────────────────── foot */

.foot {
  border-top: 1px solid var(--hair); padding: 2rem var(--gut) 3rem;
  display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  font-family: var(--f-m); font-size: 0.5625rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--grey);
}

/* ─────────────────────────────────────────────────────────── responsive */

@media (max-width: 900px) {
  .top { grid-template-columns: auto auto; }
  .top__s { display: none; }
  .grid { grid-template-columns: 1fr; }
  .how__g { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .how__f { grid-template-columns: 1fr; }
  .foot { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}