/* =====================================================================
   EmergentBiome / MethaNet - "Deep Field"
   luminous structure emerging from near-black; instrument-grade; cinematic.
   ===================================================================== */
@import url("vendor/fonts/fonts.css");

:root {
  --bg-base: #06090D;
  --bg-panel: #0C1218;
  --bg-elevated: #121A22;
  --hairline: #1B2730;
  --text-primary: #EAF2F2;
  --text-muted: #8A9BA5;
  --emergence: #2FE3C2;     /* EmergentBiome - platform */
  --methane-a: #FF8A4C;     /* MethaNet - application */
  --methane-b: #FF5C3A;
  --attested: #86F0E0;
  --eco-rumen: #FF6F91;
  --eco-wetland: #9DE24A;
  --eco-mangrove-msm: #38D0FF;
  --eco-mangrove-futian: #6E7BFF;

  --methane-grad: linear-gradient(90deg, var(--methane-a), var(--methane-b));
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --header-h: 56px;
  --footer-h: 30px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }
.smallcaps {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.66rem;
  color: var(--text-muted);
}
::selection { background: rgba(47, 227, 194, 0.25); color: #fff; }

/* ---------- HEADER LOCKUP ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h); z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 40px);
  background: linear-gradient(180deg, rgba(6, 9, 13, 0.92), rgba(6, 9, 13, 0.55));
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.lockup { display: flex; align-items: center; gap: 12px; min-width: 0; }
.lockup__glyph { width: 26px; height: 26px; flex: none; filter: drop-shadow(0 0 7px rgba(47, 227, 194, 0.55)); }
.lockup__text { display: flex; flex-direction: column; line-height: 1.05; min-width: 0; }
.lockup__brand { font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em; white-space: nowrap; }
.lockup__brand .plat { color: var(--text-primary); }
.lockup__brand .sep { color: var(--text-muted); margin: 0 6px; font-weight: 400; }
.lockup__brand .app {
  background: var(--methane-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lockup__tag { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.06em; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header__right { display: flex; align-items: center; gap: 16px; }
.header__meta { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-muted); text-align: right; white-space: nowrap; }
.header__meta .dot { color: var(--emergence); }
.header__cta { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.04em; color: var(--text-primary); text-decoration: none; border: 1px solid var(--hairline); border-radius: 999px; padding: 7px 14px; white-space: nowrap; transition: border-color 0.3s var(--ease), color 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.header__cta:hover, .header__cta:focus-visible { border-color: var(--emergence); color: var(--emergence); box-shadow: 0 0 14px -2px rgba(47, 227, 194, 0.5); outline: none; }
@media (max-width: 720px) { .header__meta { display: none; } .lockup__tag { display: none; } .header__cta { font-size: 0.58rem; padding: 6px 11px; } }

/* CTA buttons (closing) */
.closing__cta { max-width: 1080px; margin: 36px auto 0; display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 600; font-size: 0.98rem; text-decoration: none; padding: 14px 22px; border-radius: 4px; transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease); }
.btn--primary { color: #0A0F12; background: var(--methane-grad); box-shadow: 0 10px 34px -10px rgba(255, 92, 58, 0.6); }
.btn--primary:hover, .btn--primary:focus-visible { transform: translateY(-2px); box-shadow: 0 16px 44px -10px rgba(255, 92, 58, 0.8); outline: none; }
.btn--ghost { color: var(--text-primary); border: 1px solid var(--hairline); background: rgba(12, 18, 24, 0.5); }
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--emergence); color: var(--emergence); outline: none; }
.closing__reportnote { max-width: 1080px; margin: 14px auto 0; font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); }
.closing__reportnote a { color: var(--emergence); text-decoration: none; }

/* ---------- SCENE PROGRESS RAIL ---------- */
.rail { position: fixed; right: clamp(10px, 2.4vw, 26px); top: 50%; transform: translateY(-50%); z-index: 55; display: flex; flex-direction: column; gap: 14px; }
.rail__item { display: flex; align-items: center; gap: 9px; justify-content: flex-end; cursor: pointer; background: none; border: 0; padding: 12px 6px; min-height: 44px; }
.rail__num { font-family: var(--font-mono); font-size: 0.58rem; color: var(--text-muted); opacity: 0; transition: opacity 0.3s var(--ease); }
.rail__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--hairline); border: 1px solid #2a3a46; transition: all 0.35s var(--ease); }
.rail__item[aria-current="true"] .rail__dot { background: var(--emergence); border-color: var(--emergence); box-shadow: 0 0 10px rgba(47, 227, 194, 0.8); transform: scale(1.25); }
.rail__item[aria-current="true"] .rail__num, .rail__item:hover .rail__num { opacity: 1; color: var(--text-primary); }
.rail__item:focus-visible, .rail__item:focus { outline: 2px solid var(--emergence); outline-offset: 4px; border-radius: 4px; }
@media (max-width: 720px) { .rail { display: none; } }

/* ---------- SCENE / SCROLLYTELLING ---------- */
main { position: relative; z-index: 1; }
.scene { position: relative; }
.scene__stage {
  position: sticky; top: 0; height: 100vh; width: 100%; overflow: hidden;
  display: grid; place-items: stretch;
}
.scene__canvas { position: absolute; inset: 0; }
.scene__canvas canvas { display: block; width: 100% !important; height: 100% !important; }

/* copy overlay */
.scene__overlay {
  position: absolute; z-index: 3; pointer-events: none;
  inset: var(--header-h) clamp(16px, 5vw, 64px) calc(var(--footer-h) + 18px) clamp(16px, 5vw, 64px);
  display: flex; align-items: var(--copy-v, flex-end); justify-content: var(--copy-h, flex-start);
}
.copy {
  pointer-events: auto; max-width: min(540px, 86vw);
  background: linear-gradient(180deg, rgba(12, 18, 24, 0.62), rgba(12, 18, 24, 0.34));
  border: 1px solid var(--hairline); border-left: 2px solid var(--accent, var(--emergence));
  border-radius: 3px; padding: 20px 22px 22px;
  backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.9);
}
.copy__kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.copy__kicker .smallcaps { color: var(--accent, var(--emergence)); }
.copy__num { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-muted); letter-spacing: 0.05em; }
.copy__headline {
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem); line-height: 1.08; margin-bottom: 12px;
  /* display headlines should not catch accidental drag / triple-click selection:
     a fully-selected headline reads as a stray teal block on the dark theme */
  -webkit-user-select: none; user-select: none;
}
.copy__body { color: #C7D3D8; font-size: clamp(0.95rem, 1.4vw, 1.05rem); line-height: 1.55; }
.copy__readout { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px 18px; }
.readout { display: flex; flex-direction: column; gap: 2px; }
.readout__v { font-family: var(--font-mono); font-weight: 500; font-size: 1.05rem; color: var(--text-primary); font-variant-numeric: tabular-nums; }
.readout__v.accent { color: var(--accent, var(--emergence)); }
.readout__k { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }

/* data-honesty badge */
.badge { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 8px; border-radius: 999px; border: 1px solid; }
.badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.badge.real { color: var(--attested); border-color: rgba(134, 240, 224, 0.4); background: rgba(134, 240, 224, 0.06); }
.badge.illus { color: var(--text-muted); border-color: var(--hairline); background: rgba(138, 155, 165, 0.05); }

/* scroll hint on first scene */
.scrollhint { position: absolute; left: 50%; bottom: calc(var(--footer-h) + 18px); transform: translateX(-50%); z-index: 4; display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--text-muted); font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.18em; text-transform: uppercase; animation: floaty 2.4s ease-in-out infinite; }
.scrollhint svg { width: 16px; height: 16px; }
@keyframes floaty { 0%,100% { transform: translateX(-50%) translateY(0); opacity: 0.7; } 50% { transform: translateX(-50%) translateY(5px); opacity: 1; } }

/* ---------- HERO INTRO (scene 0 title) ---------- */
.hero { position: relative; height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: var(--header-h) 20px var(--footer-h); }
.hero__canvas { position: absolute; inset: 0; z-index: 0; }
.hero__inner { position: relative; z-index: 2; max-width: 860px; }
.hero__eyebrow { margin-bottom: 22px; }
.hero__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.4rem, 7vw, 5rem); line-height: 1.0; letter-spacing: -0.02em; -webkit-user-select: none; user-select: none; }
.hero__title .app { background: var(--methane-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__sub { margin: 22px auto 0; max-width: 620px; color: #C7D3D8; font-size: clamp(1rem, 1.7vw, 1.2rem); line-height: 1.5; }
.hero__defs { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero__def { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-muted); border: 1px solid var(--hairline); border-radius: 3px; padding: 8px 12px; background: rgba(12, 18, 24, 0.4); }
.hero__def b { color: var(--text-primary); font-weight: 500; }
.hero__def .plat { color: var(--emergence); }
.hero__def .app { color: var(--methane-a); }
@media (max-width: 560px) {
  .hero__defs { margin-top: 22px; gap: 8px; }
  .hero__def { width: 100%; max-width: 390px; font-size: 0.61rem; }
}

/* ---------- CLOSING / ASK ---------- */
.closing { position: relative; padding: clamp(60px, 12vh, 140px) clamp(20px, 6vw, 80px) calc(var(--footer-h) + 60px); border-top: 1px solid var(--hairline); background: radial-gradient(120% 90% at 50% 0%, rgba(18, 26, 34, 0.6), var(--bg-base)); }
.closing__grid { max-width: 1080px; margin: 0 auto; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 820px) { .closing__grid { grid-template-columns: 1fr; } }
.ask__title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 3.6vw, 2.4rem); line-height: 1.1; margin-bottom: 16px; }
.ask__title .accent { color: var(--emergence); }
.ask__body { color: #C7D3D8; font-size: 1.02rem; line-height: 1.6; margin-bottom: 14px; }
.ask__points { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.ask__points li { display: flex; gap: 11px; align-items: baseline; color: #C7D3D8; font-size: 0.95rem; }
.ask__points li::before { content: ""; width: 6px; height: 6px; margin-top: 6px; border-radius: 50%; background: var(--methane-a); flex: none; box-shadow: 0 0 8px var(--methane-a); }
.factsheet { border: 1px solid var(--hairline); border-radius: 4px; background: rgba(12, 18, 24, 0.55); padding: 22px; }
.factsheet h3 { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 16px; }
.factsheet__row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--hairline); }
.factsheet__row:last-child { border-bottom: 0; }
.factsheet__k { color: var(--text-muted); font-size: 0.86rem; }
.factsheet__v { font-family: var(--font-mono); font-variant-numeric: tabular-nums; color: var(--text-primary); font-size: 0.92rem; text-align: right; }
.factsheet__v .in-progress { color: var(--methane-a); }
.terminology { max-width: 1080px; margin: clamp(42px, 7vw, 72px) auto 0; }
.terminology__intro { display: grid; grid-template-columns: minmax(210px, 0.65fr) minmax(0, 1.35fr); column-gap: clamp(24px, 5vw, 64px); align-items: end; margin-bottom: 20px; }
.terminology__intro .smallcaps { grid-column: 1; color: var(--emergence); margin-bottom: 7px; }
.terminology__intro h3 { grid-column: 1; font-family: var(--font-display); font-size: clamp(1.35rem, 2.6vw, 1.85rem); line-height: 1.12; }
.terminology__intro p { grid-column: 2; grid-row: 1 / span 2; color: var(--text-muted); max-width: 650px; line-height: 1.55; }
.terminology__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--hairline); border-radius: 4px; overflow: hidden; background: var(--hairline); gap: 1px; }
.terminology__item { min-width: 0; padding: 18px 20px; background: rgba(12, 18, 24, 0.94); }
.terminology__item dt { display: flex; align-items: baseline; gap: 10px; min-width: 0; margin-bottom: 7px; }
.terminology__term { flex: none; color: var(--attested); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.04em; }
.terminology__full { min-width: 0; color: var(--text-primary); font-family: var(--font-display); font-weight: 600; overflow-wrap: anywhere; }
.terminology__item dd { color: var(--text-muted); font-size: 0.86rem; line-height: 1.5; overflow-wrap: anywhere; }
@media (max-width: 720px) {
  .terminology__intro { grid-template-columns: 1fr; }
  .terminology__intro .smallcaps, .terminology__intro h3, .terminology__intro p { grid-column: 1; grid-row: auto; }
  .terminology__intro p { margin-top: 12px; }
  .terminology__grid { grid-template-columns: 1fr; }
  .terminology__item dt { align-items: flex-start; flex-direction: column; gap: 2px; }
}
.contact { margin-top: 26px; text-align: center; color: var(--text-muted); font-family: var(--font-mono); font-size: 0.72rem; }
.contact a { color: var(--emergence); text-decoration: none; }
.contact a:hover { text-decoration: underline; }

/* ---------- PERSISTENT CLAIM STRIP (footer) ---------- */
.claimbar {
  position: fixed; bottom: 0; left: 0; right: 0; height: var(--footer-h); z-index: 60;
  display: flex; align-items: center; gap: 10px; padding: 0 clamp(14px, 4vw, 40px);
  background: rgba(8, 11, 15, 0.94); border-top: 1px solid var(--hairline);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-muted); letter-spacing: 0.02em;
}
.claimbar__tag { color: var(--attested); border: 1px solid rgba(134, 240, 224, 0.35); border-radius: 3px; padding: 2px 6px; flex: none; }
.claimbar__text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.claimbar__date { margin-left: auto; flex: none; color: var(--text-muted); }
@media (max-width: 720px) { .claimbar__date { display: none; } .claimbar { font-size: 0.55rem; } }

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  .scrollhint { animation: none; }
  .scene__stage { /* sticky still works; JS renders a single static frame */ }
  .rail__num, .rail__dot, .rail__item[aria-current="true"] .rail__dot { transition: none; }
  * { scroll-behavior: auto; }
}

/* ---------- responsive copy placement ---------- */
@media (max-width: 720px) {
  .scene__overlay { inset: var(--header-h) 12px calc(var(--footer-h) + 12px) 12px; align-items: flex-end; justify-content: center; }
  .copy { max-width: 100%; padding: 16px 16px 18px; }
  .copy__headline { font-size: 1.35rem; }
}

/* utility: visually hidden (a11y) */
.vh { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.noscript { position: fixed; inset: 0; display: grid; place-items: center; background: var(--bg-base); z-index: 100; padding: 40px; text-align: center; color: var(--text-muted); font-family: var(--font-mono); }

/* accessible skip-to-scene nav - off-screen until a link receives keyboard focus */
.skip-nav { position: fixed; top: 8px; left: 8px; z-index: 200; display: flex; flex-direction: column; gap: 6px; }
.skip-nav a { position: absolute; left: -9999px; top: 0; background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--emergence); border-radius: 4px; padding: 10px 14px; font-family: var(--font-mono); font-size: 0.72rem; text-decoration: none; white-space: nowrap; }
.skip-nav a:focus { position: static; left: auto; outline: 2px solid var(--emergence); outline-offset: 2px; }