/* GAIA cinematic homepage layer. Loaded on index.html only. */

/* ---------- film grain (3%) ---------- */
.grain {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none; opacity: 0.03;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 160px 160px;
}

/* ---------- cinematic story ---------- */
#cine {
  position: relative;
  background: #06131a;
  color: #e6f2ee;
}
#cine-bg {
  position: sticky; top: 0; height: 100vh; width: 100%; z-index: 0; overflow: hidden;
}
#globe-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.globe-fallback {
  position: absolute; inset: 0; display: none;
  background:
    radial-gradient(42% 44% at 50% 46%, rgba(13,158,118,0.35), rgba(13,158,118,0) 70%),
    radial-gradient(70% 70% at 50% 50%, rgba(9,40,45,0.6), #06131a 75%);
}
.globe-fallback::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(13,158,118,0.5) 1px, transparent 1.4px);
  background-size: 14px 14px; opacity: 0.18;
  -webkit-mask-image: radial-gradient(42% 44% at 50% 46%, #000 40%, transparent 72%);
          mask-image: radial-gradient(42% 44% at 50% 46%, #000 40%, transparent 72%);
}
html.no-globe #globe-canvas { display: none; }
html.no-globe .globe-fallback { display: block; }

#cine-panels { position: relative; z-index: 1; margin-top: -100vh; }
/* Solid ground so the sticky teal globe can't bleed behind post-story content
   (was making the teal .section-label vanish over the particles). */
#post-story { position: relative; z-index: 2; background: #06131a; }
.cine-panel {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 6vh 6vw; position: relative;
}

/* headline with per-line mask reveal */
.cine-title {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600;
  font-size: clamp(2.4rem, 9vw, 8rem); line-height: 0.98; letter-spacing: -0.025em;
  color: #eafaf4; margin: 0; text-shadow: 0 2px 60px rgba(13,158,118,0.25);
}
.cine-line { display: block; overflow: hidden; }
.cine-line span { display: block; will-change: transform; }
.cine-hero-sub {
  margin-top: 1.6rem; max-width: 640px; font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: rgba(230,242,238,0.72); line-height: 1.6;
}
.cine-scroll-hint {
  position: absolute; bottom: 2.2rem; left: 50%; transform: translateX(-50%);
  font-family: 'Space Grotesk', sans-serif; text-transform: uppercase; letter-spacing: 0.3em;
  font-size: 0.66rem; color: rgba(230,242,238,0.5);
}

/* chapter blocks */
.ch-kicker {
  font-family: 'Space Grotesk', sans-serif; text-transform: uppercase; letter-spacing: 0.28em;
  font-size: 0.72rem; color: #6fd4be; margin-bottom: 1rem;
}
.ch-stat {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; line-height: 0.9;
  font-size: clamp(3.4rem, 13vw, 11rem); color: #0D9E76;
  text-shadow: 0 4px 80px rgba(13,158,118,0.4);
}
.ch-label { margin-top: 0.6rem; font-size: clamp(1.1rem, 2vw, 1.6rem); color: #d7ede7; }
.ch-note { margin-top: 0.8rem; max-width: 520px; color: rgba(230,242,238,0.6); font-size: 0.95rem; line-height: 1.6; }

/* chapter c — scatter */
#ch3-scatter { width: min(560px, 84vw); height: min(360px, 52vh); margin-top: 1.4rem; }
.ch3-axis { display: flex; justify-content: space-between; width: min(560px, 84vw); margin-top: 0.4rem;
  font-family: 'Space Grotesk', sans-serif; font-size: 0.7rem; color: rgba(230,242,238,0.5); }

/* chapter d — bars */
.divide-bars { display: flex; gap: clamp(1.5rem, 6vw, 4rem); align-items: flex-end; margin-top: 1.6rem; }
.divide-col { display: flex; flex-direction: column; align-items: center; }
.divide-col .cap { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: clamp(1.3rem, 3vw, 1.8rem); color: #eafaf4; margin-bottom: 0.5rem; }
.divide-col .track { width: clamp(72px, 12vw, 130px); height: min(240px, 38vh); display: flex; align-items: flex-end; }
.divide-col .fill {
  width: 100%; height: 0%; border-radius: 10px 10px 0 0;
  background: linear-gradient(180deg, #14c795, #0D9E76);
  box-shadow: 0 0 40px -6px rgba(13,158,118,0.5); transition: height 0.12s linear;
}
.divide-col .who { margin-top: 0.7rem; font-size: 0.84rem; color: rgba(230,242,238,0.65); }

/* ---------- micro-interactions (homepage) ---------- */
.btn { transition: transform 0.18s ease, box-shadow 0.18s ease; }
.btn:hover {
  transform: scale(1.03);
  box-shadow: 0 0 0 1px rgba(13,158,118,0.55), 0 10px 34px -10px rgba(13,158,118,0.6);
}
nav { transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease; }
nav.scrolled { background: rgba(6,19,26,0.85); backdrop-filter: blur(12px); box-shadow: 0 1px 0 rgba(0,0,0,0.05); }

/* occupation-exposure toggle (Task 1) */
.occ-toggle { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid var(--border); border-radius: 999px; background: var(--card); }
.occ-toggle-btn {
  font: inherit; font-size: 0.82rem; font-weight: 600; cursor: pointer; border: 0; background: none;
  color: var(--muted); padding: 0.45rem 1rem; border-radius: 999px; transition: background 0.18s, color 0.18s;
}
.occ-toggle-btn:hover { color: var(--text); }
.occ-toggle-btn.active { background: #0D9E76; color: #fff; }
.occ-loading { color: var(--faint); font-size: 0.85rem; padding: 0.5rem 0; }
/* animate exposure bars in */
#occ-extremes .occ-bar-fill, #occ-familiar .occ-bar-fill { transition: width 0.9s cubic-bezier(0.16,1,0.3,1); }

/* Hero band: top-10 E1+E2 (Tasks 6 & 7) */
.e1e2-band .section-inner { max-width: 1000px; }
.e1e2-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; }
.vintage-badge {
  font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; white-space: nowrap;
  color: #0D9E76; background: rgba(13,158,118,0.1); border: 1px solid rgba(13,158,118,0.3);
  border-radius: 999px; padding: 0.35rem 0.85rem; margin-top: 0.3rem;
}
.e1e2-chart-card { position: relative; background: #0A1628; border-radius: 16px; padding: 1.4rem; margin-top: 1.4rem; box-shadow: 0 14px 40px -18px rgba(10,22,40,0.5); }
.e1e2-chart-wrap { position: relative; height: 440px; }
.gaia-dl-btn {
  position: absolute; top: 1rem; right: 1rem; z-index: 2; cursor: pointer;
  font: inherit; font-size: 0.72rem; font-weight: 600; color: #C7D3E0;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); border-radius: 8px; padding: 0.35rem 0.7rem;
  transition: background 0.15s, color 0.15s;
}
.gaia-dl-btn:hover { background: rgba(13,158,118,0.2); color: #fff; }
.e1e2-mean { margin-top: 1rem; font-size: 0.9rem; font-weight: 600; color: var(--text); }
.e1e2-source { font-size: 0.72rem; color: var(--faint); margin-top: 0.3rem; }

/* Research built on GAIA (Task 3) */
.rbg-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem; margin-top: 1.5rem; }
.rbg-card {
  display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 1.6rem; text-decoration: none; color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.rbg-card:hover { transform: translateY(-4px); border-color: #0D9E76; box-shadow: 0 16px 40px -16px rgba(13,158,118,0.4); }
.rbg-card .tag {
  align-self: flex-start; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: #0D9E76; background: rgba(13,158,118,0.1); border-radius: 999px; padding: 0.25rem 0.7rem;
}
.rbg-card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.2rem; line-height: 1.25; color: var(--text); margin: 0.9rem 0 0.5rem; }
.rbg-card > p { color: var(--muted); font-size: 0.9rem; line-height: 1.6; margin: 0; flex: 1; }
.rbg-highlight {
  display: flex; flex-direction: column; gap: 0.2rem; margin: 1.1rem 0 0.9rem;
  padding: 0.9rem 1.1rem; border-radius: 12px; background: var(--surface); border-left: 3px solid #0D9E76;
}
.rbg-stat { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.6rem; color: #0D9E76; line-height: 1; }
.rbg-cap { font-size: 0.78rem; color: var(--muted); }
.rbg-link { color: #0D9E76; font-weight: 600; font-size: 0.85rem; margin-top: 0.2rem; }

/* reveals */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .cine-line span { transform: none !important; }
  #cine-bg { position: relative; }
  #cine-panels { margin-top: 0; }
}