/* ============================================================
   04 · DUST — room stylesheet
   A photograph as a hundred thousand particles.
   ============================================================ */

@font-face {
  font-family: 'Fraunces Var';
  src: url('/vendor/fonts/Fraunces-Variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Newsreader Var';
  src: url('/vendor/fonts/Newsreader-Variable.woff2') format('woff2');
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Newsreader Var';
  src: url('/vendor/fonts/Newsreader-Italic-Variable.woff2') format('woff2');
  font-weight: 200 800;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk Var';
  src: url('/vendor/fonts/SpaceGrotesk-Variable.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter Var';
  src: url('/vendor/fonts/Inter-Variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #08070a;
  --bg-soft: #0d0b0d;
  --fg: #f2ece1;
  --muted: #9a9184;
  --muted-dim: #5f594f;
  --accent: #c69a63;
  --rule: rgba(242, 236, 225, 0.12);
}

* { box-sizing: border-box; }

/* always-present text alternative for the particle-rendered photographs
   (the canvas is aria-hidden and the <img> fallback is display:none in the
   default particle mode, so its alt never reaches the a11y tree) */
.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;
}

html {
  background: var(--bg);
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter Var', system-ui, sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- background canvas + vignette ---------- */

#gl {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
  background: var(--bg);
}

body.reduced-motion #gl { display: none; }

.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(8,7,10,0) 0%, rgba(8,7,10,0) 42%, rgba(8,7,10,0.55) 82%, rgba(8,7,10,0.92) 100%),
    linear-gradient(rgba(8,7,10,0.5) 0%, rgba(8,7,10,0) 12%, rgba(8,7,10,0) 88%, rgba(8,7,10,0.6) 100%);
}

/* ---------- chrome ---------- */

.chrome {
  position: fixed;
  top: 0;
  z-index: 5;
  padding: 1.4rem 1.6rem;
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  pointer-events: auto;
  transition: color 0.25s ease;
  mix-blend-mode: normal;
}
.chrome--index { left: 0; }
.chrome--index:hover { color: var(--fg); }
.chrome--room { right: 0; }

/* ---------- scroll progress rail ---------- */

.progress-rail {
  position: fixed;
  right: 1.7rem;
  top: 4.6rem;
  bottom: 2.4rem;
  width: 1px;
  background: var(--rule);
  z-index: 5;
  transform-origin: top;
}
.progress-rail__fill {
  position: absolute;
  top: 0; left: -1px;
  width: 3px;
  height: 100%;
  background: var(--accent);
  opacity: 0.65;
  transform: scaleY(0);
  transform-origin: top;
  will-change: transform;
}
@media (max-width: 760px) { .progress-rail { display: none; } }

/* ---------- layout shell ---------- */

main {
  position: relative;
  z-index: 2;
}

section { position: relative; }

/* ---------- hero ---------- */

.hero {
  height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1.5rem;
}
.hero__kicker {
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.1rem;
}
.hero__title {
  font-family: 'Fraunces Var', serif;
  font-optical-sizing: auto;
  font-weight: 340;
  font-variation-settings: 'opsz' 144, 'SOFT' 20;
  font-size: clamp(3.4rem, 13vw, 8.5rem);
  line-height: 0.92;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.hero__sub {
  font-family: 'Newsreader Var', serif;
  font-style: italic;
  font-weight: 340;
  font-size: clamp(1rem, 2vw, 1.28rem);
  color: var(--muted);
  max-width: 34ch;
  margin: 1.4rem 0 0;
}
.hero__cue {
  position: absolute;
  bottom: 2.6rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted-dim);
  animation: cue-bob 2.6s ease-in-out infinite;
}
@keyframes cue-bob {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.55; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__cue { animation: none; opacity: 0.7; }
}

/* ---------- movements ---------- */

.movement {
  height: 340vh;
}
.movement--face { height: 360vh; }

.movement__sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1.6rem;
  overflow: hidden;
}

.movement__eyebrow {
  position: absolute;
  top: 5.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-dim);
  margin: 0;
}

.movement__caption {
  position: absolute;
  bottom: 12svh;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Newsreader Var', serif;
  font-style: italic;
  font-weight: 380;
  font-size: clamp(1.2rem, 2.6vw, 1.85rem);
  color: var(--fg);
  max-width: 26ch;
  margin: 0;
  opacity: 0;
  text-shadow: 0 2px 24px rgba(0,0,0,0.6);
}

.movement__place {
  position: absolute;
  bottom: 8.2svh;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-dim);
  margin: 0;
  opacity: 0;
}

.fallback-photo {
  display: block;
  max-width: min(80vw, 760px);
  max-height: 58svh;
  width: auto;
  height: auto;
  object-fit: contain;
  opacity: 0;
  box-shadow: 0 40px 100px rgba(0,0,0,0.55);
}
body.js-active .fallback-photo { display: none; }
body.reduced-motion .fallback-photo { display: block; }

/* ---------- notes ---------- */

.notes {
  background: var(--bg);
  padding: 7rem 1.6rem 6rem;
  max-width: 980px;
  margin: 0 auto;
}
.notes__kicker {
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-dim);
  margin: 0 0 0.6rem;
}
.notes__title {
  font-family: 'Fraunces Var', serif;
  font-weight: 360;
  font-variation-settings: 'opsz' 60;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0 0 3.2rem;
  color: var(--fg);
}
.notes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.6rem 2.8rem;
  border-top: 1px solid var(--rule);
  padding-top: 2.6rem;
}
.notes__grid h3 {
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9rem;
  font-weight: 500;
}
.notes__grid p {
  font-family: 'Newsreader Var', serif;
  font-weight: 340;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
}
@media (max-width: 760px) {
  .notes__grid { grid-template-columns: 1fr; gap: 2.2rem; }
}

.notes__return {
  margin-top: 4rem;
}
.notes__return a {
  font-family: 'Space Grotesk Var', sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.2rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.notes__return a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- mobile tuning ---------- */

@media (max-width: 480px) {
  .movement { height: 280vh; }
  .movement--face { height: 300vh; }
  .movement__caption { font-size: 1.15rem; bottom: 14svh; max-width: 22ch; }
  .movement__eyebrow { top: 4.4rem; }
  .fallback-photo { max-width: 90vw; max-height: 50svh; }
}