:root {
  --ink: #f4f1ea;
  --ink-dim: rgba(244, 241, 234, 0.6);
  --gold: #c9a96a;
  --bg: #07070a;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  height: 100vh;
}

#webgl {
  position: fixed;
  inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  display: block;
}

.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.8rem 3rem;
}
.brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem; letter-spacing: 0.14em;
  color: var(--ink);
}
.brand span { color: var(--gold); font-style: italic; margin-left: 0.2em; }

.scene-nav { display: flex; gap: 0.6rem; }
.nav-btn {
  width: 44px; height: 44px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.03);
  color: var(--ink-dim);
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem; letter-spacing: 0.08em;
  cursor: pointer;
  border-radius: 50%;
  transition: all 0.5s cubic-bezier(.2,.8,.2,1);
  backdrop-filter: blur(8px);
}
.nav-btn:hover { border-color: var(--gold); color: var(--gold); }
.nav-btn.active {
  background: var(--gold); color: var(--bg);
  border-color: var(--gold);
  box-shadow: 0 0 18px rgba(201,169,106,0.4);
}

.caption {
  position: fixed;
  left: 3rem; bottom: 7.5rem;
  z-index: 10;
  max-width: 30rem;
  opacity: 0;
}
.cap-eyebrow {
  font-size: 0.7rem; letter-spacing: 0.42em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1rem; font-weight: 500;
}
.cap-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300; line-height: 1.05;
  font-size: clamp(2rem, 4vw, 3.4rem);
  margin-bottom: 1.2rem;
}
.cap-title em { color: var(--gold); font-style: italic; font-weight: 400; }
.cap-body {
  font-size: 0.98rem; line-height: 1.7;
  color: var(--ink-dim);
}

.deck {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 10;
  padding: 1.4rem 3rem 1.8rem;
  background: linear-gradient(to top, rgba(7,7,10,0.85), transparent);
}
.deck-inner {
  display: flex; align-items: center; gap: 1.6rem;
  max-width: 720px; margin: 0 auto;
}
.deck-label {
  font-size: 0.64rem; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--ink-dim); white-space: nowrap;
}
.controls { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.ctrl {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
  color: var(--ink-dim);
  font-family: 'Inter', sans-serif;
  font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.4s cubic-bezier(.2,.8,.2,1);
  backdrop-filter: blur(8px);
}
.ctrl svg { opacity: 0.7; }
.ctrl:hover { border-color: var(--gold); color: var(--gold); }
.ctrl:hover svg { opacity: 1; }
.ctrl.active {
  border-color: var(--gold); color: var(--gold);
  background: rgba(201,169,106,0.08);
}

.loader {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 100;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.loader.done { opacity: 0; visibility: hidden; }
.loader-mark {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.8rem; letter-spacing: 0.18em;
  color: var(--ink); margin-bottom: 2rem;
}
.loader-bar {
  width: 200px; height: 1px;
  background: rgba(255,255,255,0.12);
  overflow: hidden;
}
.loader-bar span {
  display: block; height: 100%; width: 0%;
  background: var(--gold);
  transition: width 0.3s ease;
}

.hint {
  position: fixed; right: 3rem; bottom: 7.5rem;
  z-index: 10;
  font-size: 0.64rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--ink-dim);
  text-align: right;
  opacity: 0;
}
.hint .key {
  display: inline-block; padding: 2px 8px; margin: 0 2px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 3px; color: var(--gold);
}

@media (max-width: 768px) {
  .topbar { padding: 1.2rem 1.4rem; }
  .caption { left: 1.4rem; bottom: 9rem; max-width: 85%; }
  .deck { padding: 1rem 1.4rem 1.2rem; }
  .deck-inner { gap: 0.8rem; }
  .deck-label { display: none; }
  .ctrl span { display: none; }
  .ctrl { padding: 0.7rem 0.9rem; }
  .hint { display: none; }
}