/* ————————————————————————————————————————————————
   THE KEIGHLEY — design system
   near-black #0a0a0a · bone #f4f1ea · film-amber #e8a33d
———————————————————————————————————————————————— */

:root {
  --bg: #0a0a0a;
  --bone: #f4f1ea;
  --bone-dim: rgba(244, 241, 234, 0.62);
  --bone-faint: rgba(244, 241, 234, 0.34);
  --amber: #e8a33d;
  --amber-dim: rgba(232, 163, 61, 0.55);
  --display: "Bebas Neue", "Arial Narrow", sans-serif;
  --body: "Inter", -apple-system, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  background: var(--bg);
  color: var(--bone);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ————— fixed 3D layer ————— */

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}

#vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 42%, transparent 42%, rgba(0, 0, 0, 0.55) 100%);
}

/* ————— scroll progress ————— */

#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 2px;
  background: var(--amber);
  z-index: 60;
  pointer-events: none;
}

/* ————— type ————— */

.display {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 0.92;
  text-transform: uppercase;
  color: var(--bone);
}

h1.display { font-size: clamp(4.2rem, 14.5vw, 13rem); }
h2.display { font-size: clamp(2.6rem, 7.5vw, 6.5rem); }

.kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.42em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}

.subhead {
  font-size: clamp(1rem, 1.9vw, 1.45rem);
  font-weight: 400;
  color: var(--bone-dim);
  max-width: 34ch;
  margin-top: 1.6rem;
}

.body-copy {
  font-size: clamp(0.98rem, 1.45vw, 1.22rem);
  color: var(--bone-dim);
  max-width: 46ch;
  margin-top: 1.8rem;
}

.body-copy strong, .body-copy em { color: var(--bone); font-style: normal; }

.caption {
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: var(--bone-faint);
  text-transform: uppercase;
  margin-top: 2.2rem;
}

.mono { font-family: var(--mono); }

/* ————— layout / panels ————— */

main { position: relative; z-index: 10; pointer-events: none; }
main section { pointer-events: none; }
main a, main blockquote { pointer-events: auto; }

.panel {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 6vw;
}

.panel.tall { min-height: 200vh; align-items: flex-start; }
.panel.tall .panel-inner { position: sticky; top: 0; min-height: 100vh; display: flex; flex-direction: column; justify-content: center; }

.panel.xl { min-height: 340vh; display: block; padding: 0; }

.panel.quiet { min-height: 130vh; }

.panel-inner { width: 100%; }

.hero-inner {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 9vh;
}

.side-right { max-width: 560px; margin-left: auto; }
.side-left  { max-width: 560px; margin-right: auto; }
.center { max-width: 780px; margin: 0 auto; text-align: left; }

/* sticky head for the exploded section */
.sticky-head {
  position: sticky;
  top: 0;
  padding: 10vh 6vw 0;
  z-index: 11;
}
.sticky-head .caption { margin-top: 0.9rem; }

/* ————— scroll cue ————— */

.scroll-cue {
  margin-top: 7vh;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.4em;
  color: var(--bone-faint);
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.scroll-cue span {
  display: block;
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--amber), transparent);
  animation: cue-drop 2.2s ease-in-out infinite;
}
@keyframes cue-drop {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ————— exploded labels + leader lines ————— */

#labels {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
}

#leader-svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.part-label {
  position: absolute;
  width: min(270px, 40vw);
  padding: 0 0 0 0.9rem;
  border-left: 1px solid var(--amber);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.45s ease, transform 0.45s ease, background-color 0.25s ease;
  will-change: opacity, transform;
}
.part-label.on { opacity: 1; transform: translateY(0); }
.part-label.hot { background: rgba(232, 163, 61, 0.08); }

.part-label h4 {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.45rem;
}
.part-label p {
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--bone-dim);
}

/* ————— weight readout ————— */

.weight-readout {
  margin-top: 3rem;
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
}
#weight-num {
  font-size: clamp(3.4rem, 8vw, 6.5rem);
  line-height: 1;
  color: var(--amber);
  font-weight: 500;
}
.weight-unit {
  font-size: 0.66rem;
  letter-spacing: 0.3em;
  color: var(--bone-faint);
}

/* ————— pull quote / stats ————— */

.pull-quote {
  font-family: var(--display);
  font-size: clamp(1.7rem, 4.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--bone);
  border-left: 2px solid var(--amber);
  padding-left: 1.6rem;
  margin: 4.5rem 0;
}
.pull-quote cite {
  display: block;
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--amber);
  margin-top: 1.1rem;
  text-transform: uppercase;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.4rem;
  margin-top: 5rem;
  padding-top: 2.4rem;
  border-top: 1px solid rgba(244, 241, 234, 0.14);
}
.stat-num {
  display: block;
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  color: var(--amber);
  font-weight: 500;
  white-space: nowrap;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-faint);
  margin-top: 0.7rem;
  line-height: 1.5;
}

/* ————— end card ————— */

.end-card {
  font-size: clamp(3.4rem, 11vw, 10rem);
  margin-top: 9rem;
  color: var(--bone);
}

#keighley .body-copy { color: var(--bone-dim); }

/* ————— webgl fallback ————— */

#webgl-fallback {
  position: fixed;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: flex-end;
  padding: 8vh 6vw;
  background: var(--bg);
  pointer-events: none;
}
#webgl-fallback[hidden] { display: none; }
#webgl-fallback h2 { font-family: var(--display); font-size: clamp(3rem, 10vw, 8rem); line-height: 0.95; }
#webgl-fallback p { max-width: 46ch; color: var(--bone-dim); margin-top: 1rem; font-size: 0.9rem; }

/* ————— responsive ————— */

@media (max-width: 760px) {
  .panel { padding: 0 7vw; }
  .side-right, .side-left, .center { max-width: 100%; }
  .stats { grid-template-columns: 1fr; gap: 1.8rem; }
  .part-label { width: min(210px, 52vw); }
  .part-label p { font-size: 0.72rem; }
  .pull-quote { padding-left: 1.1rem; margin: 3.2rem 0; }
}

/* ————— reduced motion ————— */

@media (prefers-reduced-motion: reduce) {
  .scroll-cue span { animation: none; }
  .part-label { transition: opacity 0.2s linear; transform: none; }
  .part-label.on { transform: none; }
}