/* ═══════════════════════════════════════════════════════════
   react-native-nitro-godot — marketing site
   cyan  = JS / React Native thread
   magenta = Godot thread
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #050508;
  --bg-2: #0a0a0f;
  --panel: rgba(16, 16, 26, 0.55);
  --line: rgba(120, 130, 200, 0.14);
  --text: #e8e9f2;
  --text-dim: #9497ab;
  --cyan: #00f0ff;
  --magenta: #ff2d95;
  --purple: #8b5cf6;
  --cyan-dim: rgba(0, 240, 255, 0.12);
  --magenta-dim: rgba(255, 45, 149, 0.12);
  --font-display: "Syne", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 32px; --s6: 48px; --s8: 64px; --s12: 96px;
  --r: 14px;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

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

/* subtle noise */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--cyan); color: #03060a; }

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); margin-bottom: var(--s3); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }

a { color: inherit; text-decoration: none; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 var(--s3); position: relative; z-index: 2; }

.grad {
  background: linear-gradient(100deg, var(--cyan) 10%, var(--purple) 55%, var(--magenta) 95%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.hl-c { color: var(--cyan); }
.hl-m { color: var(--magenta); }

.dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  vertical-align: middle; margin-right: 2px;
}
.dot-cyan { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.dot-magenta { background: var(--magenta); box-shadow: 0 0 8px var(--magenta); }

/* ── eyebrow / labels ─────────────────────────────────── */
.eyebrow {
  font-size: 0.72rem; letter-spacing: 0.22em; color: var(--text-dim);
  margin-bottom: var(--s3); display: flex; align-items: center; gap: 10px;
}
.eyebrow-sep { color: var(--purple); margin: 0 4px; }
.tick { width: 24px; height: 1px; background: var(--cyan); box-shadow: 0 0 6px var(--cyan); display: inline-block; }
.tick-magenta { background: var(--magenta); box-shadow: 0 0 6px var(--magenta); }

/* ── glass panels ─────────────────────────────────────── */
.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* ── buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 10px;
  font-weight: 600; font-size: 0.95rem;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.25s, background 0.25s, border-color 0.25s;
  will-change: transform;
  cursor: pointer;
}
.btn-sm { padding: 9px 16px; font-size: 0.8rem; }
.btn-primary {
  background: linear-gradient(100deg, var(--cyan), #26c9ff);
  color: #03060a;
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.35), inset 0 0 0 1px rgba(255,255,255,0.25);
}
.btn-primary:hover { box-shadow: 0 0 44px rgba(0, 240, 255, 0.55), inset 0 0 0 1px rgba(255,255,255,0.35); }
.btn-ghost {
  border: 1px solid rgba(150, 165, 235, 0.42);
  background: rgba(255,255,255,0.02);
  color: var(--text);
}
.btn-ghost:hover { border-color: rgba(0, 240, 255, 0.45); box-shadow: 0 0 18px rgba(0, 240, 255, 0.12); }

/* ── nav ──────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--s4);
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 5, 8, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; letter-spacing: 0.04em; }
.nav-links { display: flex; gap: var(--s3); }
.nav-links a {
  font-size: 0.82rem; color: var(--text-dim); letter-spacing: 0.03em;
  transition: color 0.2s, text-shadow 0.2s;
}
.nav-links a:hover { color: var(--cyan); text-shadow: 0 0 12px rgba(0, 240, 255, 0.6); }

/* ── boot overlay ─────────────────────────────────────── */
.boot {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s;
}
.boot.done { opacity: 0; visibility: hidden; pointer-events: none; }
.boot-inner { display: flex; flex-direction: column; align-items: center; gap: var(--s3); width: min(320px, 80vw); }
.boot-rings { position: relative; width: 64px; height: 44px; }
.boot-rings span {
  position: absolute; top: 2px; width: 40px; height: 40px; border-radius: 50%;
  border: 2px solid var(--cyan); opacity: 0.9;
  animation: bootPulse 1.2s ease-in-out infinite;
}
.boot-rings span:last-child {
  left: 24px; border-color: var(--magenta); animation-delay: 0.6s;
}
@keyframes bootPulse { 0%, 100% { transform: scale(1); opacity: 0.9; } 50% { transform: scale(0.85); opacity: 0.5; } }
.boot-log { font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.05em; min-height: 1.2em; }
.boot-bar { width: 100%; height: 2px; background: rgba(255,255,255,0.07); border-radius: 2px; overflow: hidden; }
.boot-bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 10px var(--cyan);
  transition: width 0.3s ease;
}

/* ── hero ─────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#threadCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-glow {
  position: absolute; width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,240,255,0.07), rgba(139,92,246,0.05) 40%, transparent 70%);
  pointer-events: none; transform: translate(-50%, -50%);
  left: 50%; top: 50%;
  will-change: transform;
}
.scanlines {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(0,0,0,0.12) 3px 4px);
}
.hero-content { position: relative; z-index: 3; text-align: center; padding: 120px var(--s3) var(--s8); max-width: 900px; }
.hero-title {
  font-size: clamp(2.6rem, 7.5vw, 5.4rem);
  font-weight: 800;
  margin-bottom: var(--s3);
  text-wrap: balance;
}
.hero-sub {
  color: var(--text-dim); font-size: clamp(1rem, 1.6vw, 1.18rem);
  max-width: 620px; margin: 0 auto var(--s4); text-wrap: pretty;
}
.hero .eyebrow { justify-content: center; }
.hero-ctas { display: flex; gap: var(--s2); justify-content: center; flex-wrap: wrap; margin-bottom: var(--s6); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s2);
  border-top: 1px solid var(--line); padding-top: var(--s4);
}
.stat-n {
  display: block; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, var(--text), var(--text-dim));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-l { font-size: 0.72rem; color: var(--text-dim); letter-spacing: 0.06em; text-transform: uppercase; }

.scroll-hint {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: 0.62rem; letter-spacing: 0.3em; color: var(--text-dim);
}
.scroll-line { width: 1px; height: 34px; background: linear-gradient(180deg, var(--cyan), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%,100% { opacity: 0.3; transform: scaleY(0.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ── sections ─────────────────────────────────────────── */
.section { padding: var(--s12) 0; position: relative; }
.section-tight { padding: var(--s6) 0; }
.lede { color: var(--text-dim); max-width: 640px; margin-bottom: var(--s6); font-size: 1.05rem; }

/* ── thread lane table ────────────────────────────────── */
.lane-table {
  display: grid; grid-template-columns: 1fr 220px 1fr;
  overflow: hidden;
}
.lane { padding: var(--s4); }
.lane-js { border-right: 1px solid var(--line); }
.lane-godot { border-left: 1px solid var(--line); }
.lane-head {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.78rem; letter-spacing: 0.14em; margin-bottom: var(--s3);
}
.lane-js .lane-head { color: var(--cyan); }
.lane-godot .lane-head { color: var(--magenta); }
.lane-hz { margin-left: auto; color: var(--text-dim); font-size: 0.7rem; }
.lane ul { list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: 0.78rem; }
.lane li { padding-left: 22px; position: relative; color: var(--text-dim); }
.lane li.ok::before { content: "▸"; position: absolute; left: 0; color: var(--cyan); }
.lane-godot li.ok::before { color: var(--magenta); }
.lane li.no { color: #b09aa4; text-decoration: line-through; text-decoration-color: rgba(255,45,149,0.5); }
.lane li.no::before { content: "✕"; position: absolute; left: 0; color: var(--magenta); }
.lane-js li.no { color: #93aab3; text-decoration-color: rgba(0,240,255,0.4); }
.lane-js li.no::before { color: var(--cyan); }

.lane-bridge {
  display: flex; flex-direction: column; justify-content: center; gap: 18px;
  padding: var(--s4) var(--s2);
  background: rgba(139, 92, 246, 0.04);
}
.bridge-pipe {
  position: relative; height: 2px; border-radius: 2px;
  background: rgba(255,255,255,0.08);
  overflow: visible;
}
.bridge-pipe::after {
  content: ""; position: absolute; top: -1.5px; width: 22px; height: 5px; border-radius: 3px;
  animation: pipeFlow 2.4s linear infinite;
}
.pipe-out::after   { background: var(--magenta); box-shadow: 0 0 10px var(--magenta); animation-direction: reverse; }
.pipe-in::after    { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation-delay: 0.4s; }
.pipe-touch::after { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation-delay: 1.1s; }
.pipe-cam::after   { background: var(--purple); box-shadow: 0 0 10px var(--purple); animation-direction: reverse; animation-delay: 0.8s; }
@keyframes pipeFlow { from { left: -10%; } to { left: 100%; } }
.pipe-label {
  position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  font-size: 0.58rem; letter-spacing: 0.1em; color: var(--text-dim); white-space: nowrap;
}

/* ── feature grid ─────────────────────────────────────── */
.grid { display: grid; gap: var(--s2); }
.feat-grid { grid-template-columns: repeat(4, 1fr); }
.card {
  padding: var(--s4) var(--s3);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.35s, box-shadow 0.35s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(0,240,255,0.08), transparent 45%);
  transition: opacity 0.35s; pointer-events: none;
}
.card.in { transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.35s, box-shadow 0.35s; }
.card:hover { transform: translateY(-4px); border-color: rgba(0, 240, 255, 0.28); box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 24px rgba(0,240,255,0.06); }
.card:hover::before { opacity: 1; }
.card-glyph {
  font-size: 1.4rem; color: var(--cyan); margin-bottom: var(--s2);
  text-shadow: 0 0 16px rgba(0, 240, 255, 0.6);
}
.card:nth-child(even) .card-glyph { color: var(--magenta); text-shadow: 0 0 16px rgba(255, 45, 149, 0.6); }
.card:nth-child(even):hover { border-color: rgba(255, 45, 149, 0.28); box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 24px rgba(255,45,149,0.06); }
.card:nth-child(even)::before { background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(255,45,149,0.08), transparent 45%); }
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.85rem; color: var(--text-dim); }
.card .mono { font-size: 0.78em; color: var(--text); }

/* ── fps panel ────────────────────────────────────────── */
.fps-panel {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--s6);
  padding: var(--s6);
  border-color: rgba(255, 45, 149, 0.18);
  align-items: center;
}
.fps-copy p { color: var(--text-dim); margin-bottom: var(--s3); }
.fps-demo {
  background: rgba(3, 3, 6, 0.7); border: 1px solid var(--line); border-radius: 10px;
  padding: var(--s3); font-size: 0.82rem;
}
.fps-row { display: flex; gap: 12px; align-items: baseline; padding: 6px 0; }
.fps-key { color: var(--text-dim); min-width: 120px; }
.fps-val { font-size: 1.3rem; font-variant-numeric: tabular-nums; }
.fps-val.c { color: var(--cyan); text-shadow: 0 0 12px rgba(0,240,255,0.5); }
.fps-val.m { color: var(--magenta); text-shadow: 0 0 12px rgba(255,45,149,0.5); }
.fps-note { font-size: 0.66rem; color: #8a8fa8; margin-left: auto; }
.fps-src { margin-top: var(--s2); padding-top: var(--s2); border-top: 1px dashed var(--line); font-size: 0.7rem; color: var(--purple); }
.fps-caveat { margin-top: 10px; font-size: 0.66rem; color: #8a8fa8; line-height: 1.5; }

/* ── code blocks ──────────────────────────────────────── */
.code-cols { display: grid; grid-template-columns: minmax(280px, 0.8fr) 1.2fr; gap: var(--s2); align-items: start; }
.code-block { overflow: hidden; }
.code-wide { max-width: 780px; }
.code-head {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 18px; font-size: 0.7rem; letter-spacing: 0.08em; color: var(--text-dim);
  border-bottom: 1px solid var(--line);
}
.code-dots { display: flex; gap: 6px; }
.code-dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.12); }
.code-dots i:first-child { background: rgba(255,45,149,0.55); }
.code-dots i:nth-child(2) { background: rgba(139,92,246,0.55); }
.code-dots i:last-child { background: rgba(0,240,255,0.55); }
.code-block pre { padding: var(--s3); overflow-x: auto; font-size: 0.8rem; line-height: 1.7; }
.code-bare { background: rgba(3,3,6,0.7); border: 1px solid var(--line); border-radius: 10px; }
.code-bare pre { padding: var(--s3); }

/* token colors */
.t-k  { color: var(--magenta); }
.t-s  { color: #a7f3d0; }
.t-c  { color: #8a8fa8; font-style: italic; }
.t-fn { color: var(--cyan); }
.t-o  { color: var(--purple); }
.t-m  { color: var(--magenta); }

/* ── api reference ────────────────────────────────────── */
.api-groups { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4) var(--s2); }
.api-group-title { font-size: 0.72rem; letter-spacing: 0.18em; color: var(--text-dim); margin-bottom: var(--s2); display: flex; align-items: center; gap: 8px; }
.api-rows { overflow: hidden; }
.api-row {
  display: grid; grid-template-columns: 240px 1fr; gap: var(--s2);
  padding: 14px 18px; border-bottom: 1px solid var(--line);
  transition: background 0.2s;
  align-items: baseline;
}
.api-row:last-child { border-bottom: none; }
.api-row:hover { background: rgba(0, 240, 255, 0.03); }
.api-row code { font-size: 0.76rem; color: var(--cyan); word-break: break-word; }
.api-row p { font-size: 0.8rem; color: var(--text-dim); }
.api-row p .mono { font-size: 0.9em; color: var(--text); }

/* ── bridge flow strip ────────────────────────────────── */
.bridge-flow {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  margin-top: var(--s4); font-size: 0.7rem; letter-spacing: 0.04em;
  color: var(--text-dim);
}
.bf { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,0.02); }
.bf-cyan { color: var(--cyan); border-color: rgba(0,240,255,0.35); }
.bf-magenta { color: var(--magenta); border-color: rgba(255,45,149,0.35); }
.bf-arrow { color: var(--purple); }

/* ── build panel ──────────────────────────────────────── */
.build-panel {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--s6);
  padding: var(--s6); align-items: center;
}
.build-panel p { color: var(--text-dim); }
.build-panel .mono { font-size: 0.85em; color: var(--text); }

/* ── outro ────────────────────────────────────────────── */
.outro { padding: var(--s12) 0 calc(var(--s12) + var(--s6)); text-align: center; position: relative; overflow: hidden; }
.outro::before {
  content: ""; position: absolute; left: 50%; bottom: -240px; transform: translateX(-50%);
  width: 900px; height: 480px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(139,92,246,0.12), rgba(0,240,255,0.05) 45%, transparent 70%);
  pointer-events: none;
}
.outro-wrap { position: relative; }
.outro-title { font-size: clamp(2.4rem, 6vw, 4.4rem); margin-bottom: var(--s4); }

/* ── footer ───────────────────────────────────────────── */
.footer { border-top: 1px solid var(--line); padding: var(--s4) 0; }
.footer-wrap {
  display: flex; flex-wrap: wrap; gap: var(--s2) var(--s4);
  justify-content: space-between; align-items: center;
  font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.04em;
}
.footer-wrap nav { display: flex; gap: var(--s3); }
.footer-wrap a:hover { color: var(--cyan); }

/* ── reveal animation ─────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  clip-path: inset(0 0 12% 0);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), clip-path 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--rd, 0s);
  will-change: transform, opacity;
}
.reveal.in { opacity: 1; transform: none; clip-path: inset(0 0 0 0); }

/* ── responsive ───────────────────────────────────────── */
@media (max-width: 1020px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .api-groups { grid-template-columns: 1fr; }
  .code-cols { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav-links { display: none; }
  .lane-table { grid-template-columns: 1fr; }
  .lane-js { border-right: none; border-bottom: 1px solid var(--line); }
  .lane-godot { border-left: none; border-top: 1px solid var(--line); }
  .lane-bridge { flex-direction: row; flex-wrap: wrap; gap: 26px 18px; padding: var(--s3); }
  .bridge-pipe { flex: 1 1 40%; }
  .fps-panel, .build-panel { grid-template-columns: 1fr; padding: var(--s4); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: var(--s3) var(--s2); }
  .api-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 520px) {
  .feat-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .hero .eyebrow { font-size: 0.6rem; letter-spacing: 0.14em; gap: 6px; }
}

@media (forced-colors: active) {
  .grad, .stat-n { -webkit-text-fill-color: currentColor; background: none; color: CanvasText; }
}

/* ── accessibility ────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; clip-path: none; transition: none; }
  .bridge-pipe::after, .scroll-line, .boot-rings span { animation: none; }
  .boot { display: none; }
  .card, .card.in, .btn, .nav, .nav-links a, .api-row { transition: none; }
  .card::before { transition: none; }
}