:root {
  color-scheme: dark;
  --bg: #06050d;
  --bg2: #0c0a18;
  --panel: rgba(18, 15, 34, 0.72);
  --line: rgba(255, 255, 255, 0.09);
  --fg: #ecebf5;
  --muted: #a3a1b8;
  --magenta: #ff00a8;
  --cyan: #00e5ff;
  --orange: #ff7a3d;
  --accent: var(--magenta);
  --display: "Unbounded Variable", "Space Grotesk Variable", system-ui, sans-serif;
  --body: "Space Grotesk Variable", system-ui, sans-serif;
  --mono: "JetBrains Mono Variable", ui-monospace, monospace;
  --gutter: clamp(16px, 5vw, 72px);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 400 18px/1.55 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
a { color: var(--cyan); text-underline-offset: 3px; }
a:hover { color: #fff; }
code { font: 500 0.88em var(--mono); color: #fff; background: rgba(255, 255, 255, 0.07); padding: 0.1em 0.4em; border-radius: 6px; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.04; margin: 0; }
h2 { font-size: clamp(30px, 5vw, 60px); }
.neon {
  background: linear-gradient(92deg, var(--magenta) 0%, #ff5cc4 35%, var(--cyan) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.eyebrow { font: 600 13px/1 var(--mono); letter-spacing: 0.18em; text-transform: uppercase; color: var(--cyan); margin: 0 0 18px; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter); pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 5, 13, 0.85) 0%, rgba(6, 5, 13, 0.5) 60%, rgba(6, 5, 13, 0) 100%);
}
.nav > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font: 700 17px var(--display); letter-spacing: -0.01em; }
.logo { width: 30px; height: 30px; display: block; }
.nav nav { display: flex; gap: 4px; padding: 5px; border-radius: 999px; background: rgba(8, 7, 18, 0.55); border: 1px solid var(--line); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.nav nav a { color: var(--fg); text-decoration: none; font-size: 14px; font-weight: 500; padding: 7px 14px; border-radius: 999px; }
.nav nav a:hover { background: rgba(255, 255, 255, 0.08); }
.nav nav .nav-gh { background: #fff; color: #0a0814; }
.nav nav .nav-gh:hover { background: var(--cyan); color: #0a0814; }

/* ---------- buttons ---------- */
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 15px 24px; border-radius: 999px;
  font: 600 16px var(--body); text-decoration: none; transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--magenta); color: #fff; box-shadow: 0 10px 40px -10px var(--magenta); }
.btn-primary:hover { color: #fff; box-shadow: 0 14px 50px -8px var(--magenta); }
.btn-ghost { color: #fff; border: 1px solid rgba(255, 255, 255, 0.25); background: rgba(255, 255, 255, 0.04); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: var(--cyan); color: #fff; }
.btn-kofi { background: var(--orange); color: #1a1000; box-shadow: 0 10px 40px -12px var(--orange); }
.btn-kofi:hover { color: #1a1000; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-end; padding: 120px var(--gutter) clamp(72px, 12vh, 140px); overflow: hidden; isolation: isolate; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transform: scale(1.04); }
.hero-shade {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(6, 5, 13, 0.55) 0%, rgba(6, 5, 13, 0) 28%, rgba(6, 5, 13, 0.1) 52%, rgba(6, 5, 13, 0.92) 88%, var(--bg) 100%),
    radial-gradient(120% 80% at 0% 100%, rgba(6, 5, 13, 0.85) 0%, rgba(6, 5, 13, 0) 60%);
}
.hero-copy { max-width: 820px; }
.hero h1 { font-size: clamp(30px, 10.8vw, 116px); line-height: 0.98; letter-spacing: -0.035em; text-shadow: 0 4px 40px rgba(0, 0, 0, 0.5); }
.hero h1 .neon { text-shadow: none; filter: drop-shadow(0 0 28px rgba(255, 0, 168, 0.35)); }
.lede { font-size: clamp(18px, 1.8vw, 22px); color: #dcdbe8; max-width: 560px; margin: 26px 0 34px; }
.hero-facts { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 28px; padding: 0; margin: 40px 0 0; font-size: 15px; color: var(--muted); }
.hero-facts b { color: #fff; font: 700 15px var(--mono); margin-right: 4px; }
.hero-facts sup a { color: var(--muted); text-decoration: none; }
.scroll-cue { position: absolute; right: var(--gutter); bottom: clamp(72px, 12vh, 140px); width: 26px; height: 44px; border: 2px solid rgba(255, 255, 255, 0.35); border-radius: 14px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: #fff; animation: cue 1.8s infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- showcase: a sticky stage, cards slide past as you scroll ---------- */
.showcase { position: relative; height: 700vh; /* set by main.js from the track width */ }
.stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; display: flex; flex-direction: column; justify-content: center; }
.stage::before {
  content: ""; position: absolute; inset: 0; z-index: -1; transition: background 0.6s;
  background: radial-gradient(60% 55% at 50% 55%, color-mix(in srgb, var(--accent) 22%, transparent) 0%, transparent 70%);
}
.stage-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; padding: 0 var(--gutter); margin-bottom: clamp(20px, 4vh, 44px); }
.stage-head h2 { font-size: clamp(26px, 3.6vw, 48px); }
.stage-count { font: 600 15px var(--mono); color: var(--muted); margin: 0; white-space: nowrap; }
.stage-count #cur { color: #fff; }
.track { display: flex; gap: clamp(18px, 3vw, 44px); padding: 0 var(--gutter); will-change: transform; }
.card { flex: 0 0 min(72vw, 128vh); margin: 0; transition: opacity 0.4s; }
.card-media { position: relative; aspect-ratio: 16 / 9; border-radius: clamp(12px, 1.4vw, 22px); overflow: hidden; background: #000 center / cover no-repeat;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.08); transform-origin: 50% 60%; }
.card-media video { display: block; width: 100%; height: 100%; object-fit: cover; }
.card-media::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06); pointer-events: none; }
.card figcaption { display: grid; grid-template-columns: auto 1fr; gap: 4px 22px; align-items: baseline; padding: clamp(16px, 2.4vh, 26px) 4px 0; }
.card .num { font: 600 14px var(--mono); color: var(--c, var(--magenta)); grid-row: span 2; padding-top: 6px; }
.card h3 { font-size: clamp(24px, 3vw, 40px); }
.card .tag { font: 600 11px/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--c, var(--magenta)); margin-left: 12px; vertical-align: middle; position: relative; top: -0.3em; }
.card p { margin: 0; color: var(--muted); font-size: clamp(15px, 1.35vw, 18px); max-width: 62ch; }
.progress { margin: clamp(20px, 4vh, 40px) var(--gutter) 0; height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; }
.progress span { display: block; height: 100%; width: 100%; transform-origin: 0 50%; transform: scaleX(0); background: linear-gradient(90deg, var(--magenta), var(--cyan), var(--orange)); }

.also { text-align: center; color: var(--muted); margin: clamp(40px, 8vh, 90px) var(--gutter) 0; font-size: 17px; }
.also b { color: #fff; font-weight: 600; }

/* ---------- generic sections ---------- */
main > section:not(.hero):not(.showcase) { max-width: var(--max); margin: 0 auto; padding: clamp(80px, 14vh, 160px) var(--gutter) 0; }
.section-head { max-width: 760px; margin-bottom: clamp(32px, 5vh, 56px); }
.section-head p:not(.eyebrow) { color: var(--muted); margin: 20px 0 0; }
.fine { color: var(--muted); font-size: 15px; margin: 22px 0 0; }

/* ---------- live ---------- */
.player { border-radius: 24px; overflow: hidden; background: var(--panel); border: 1px solid var(--line); box-shadow: 0 40px 120px -50px rgba(0, 229, 255, 0.35); }
.screen { position: relative; aspect-ratio: 16 / 9; background: #000 url("img/cosmic-cliffs.jpg") center / cover; }
.screen canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.start {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  border: 0; cursor: pointer; color: #fff; font: 600 16px var(--body); background: radial-gradient(closest-side, rgba(6, 5, 13, 0.55), rgba(6, 5, 13, 0.15));
}
.start-ring { width: 84px; height: 84px; border-radius: 50%; background: var(--magenta); position: relative; box-shadow: 0 0 0 0 rgba(255, 0, 168, 0.6); animation: ping 2s infinite; }
.start-ring::after { content: ""; position: absolute; left: 34px; top: 27px; border-style: solid; border-width: 15px 0 15px 24px; border-color: transparent transparent transparent #fff; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(255, 0, 168, 0.55); } 100% { box-shadow: 0 0 0 34px rgba(255, 0, 168, 0); } }
.start:hover .start-ring { background: #ff3dbd; }
.start[hidden] { display: none; }
.controls { padding: 20px clamp(16px, 2.4vw, 28px) 24px; display: grid; gap: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: 500 14px var(--body); color: var(--fg); background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.chip:hover { border-color: rgba(255, 255, 255, 0.3); }
.chip[aria-checked="true"] { background: #fff; color: #0a0814; border-color: #fff; }
.live-desc { margin: 0; color: var(--muted); font-size: 16px; min-height: 1.55em; }
.tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tool { font: 500 14px var(--body); color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; cursor: pointer; display: inline-flex; align-items: center; gap: 10px; }
.tool:hover { border-color: var(--cyan); }
.tool[aria-pressed="false"] { color: var(--muted); }
.tool.range input { accent-color: var(--magenta); width: 120px; }
.live-error { padding: 40px; text-align: center; color: var(--muted); }

/* ---------- features ---------- */
.grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; }
.grid li { background: var(--bg); padding: 30px 28px 32px; }
.grid h3 { font-size: 19px; letter-spacing: -0.01em; margin-bottom: 12px; }
.grid li:nth-child(3n+1) h3 { color: var(--magenta); }
.grid li:nth-child(3n+2) h3 { color: var(--cyan); }
.grid li:nth-child(3n) h3 { color: var(--orange); }
.grid p { margin: 0; color: var(--muted); font-size: 16px; }

/* ---------- perf ---------- */
.table-wrap { overflow-x: auto; border-radius: 22px; border: 1px solid var(--line); background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: 17px; }
th, td { text-align: left; padding: 18px 26px; border-bottom: 1px solid var(--line); }
tbody tr:last-child > * { border-bottom: 0; }
thead th { font: 600 12px var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
thead small { text-transform: none; letter-spacing: 0; }
tbody th { font-weight: 500; }
td b { font: 700 19px var(--mono); color: #fff; margin-right: 10px; }
td small { color: var(--muted); font-size: 14px; }
td code { white-space: nowrap; }
tbody tr:nth-child(2) td b { color: var(--magenta); }

/* ---------- code ---------- */
.code { position: relative; background: #0b0918; border: 1px solid var(--line); border-radius: 18px; margin-top: 16px; }
.code pre { margin: 0; padding: 24px 26px; overflow-x: auto; font: 500 14.5px/1.7 var(--mono); }
.code code { background: none; padding: 0; color: #e7e6f3; font: inherit; }
.code .c { color: #6f6c8a; }
.code .k { color: var(--cyan); }
.code .u { color: var(--magenta); }
.copy { position: absolute; top: 12px; right: 12px; font: 600 12px var(--mono); color: var(--fg); background: rgba(255, 255, 255, 0.07); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.copy:hover { border-color: var(--cyan); }
.copy.done { color: var(--cyan); }

/* ---------- write ---------- */
.write > * { min-width: 0; }
.write { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(28px, 5vw, 70px); align-items: center; }
.write-copy p:not(.eyebrow) { color: var(--muted); margin: 22px 0 30px; }
.write .code { margin: 0; box-shadow: 0 40px 100px -50px rgba(255, 0, 168, 0.45); }

/* ---------- ko-fi ---------- */
.kofi { padding-bottom: clamp(80px, 14vh, 160px); }
.kofi-card {
  position: relative; overflow: hidden; border-radius: 28px; padding: clamp(36px, 6vw, 80px);
  background:
    linear-gradient(115deg, rgba(10, 6, 20, 0.92) 30%, rgba(10, 6, 20, 0.55) 100%),
    url("img/cosmic-cliffs.jpg") 70% 30% / cover;
  border: 1px solid rgba(255, 122, 61, 0.25);
  box-shadow: 0 40px 120px -60px rgba(255, 122, 61, 0.6);
}
.kofi-card h2 { max-width: 760px; font-size: clamp(28px, 4.4vw, 54px); }
.kofi-card h2 .neon { background-image: linear-gradient(92deg, var(--orange), #ff3f7a 50%, var(--magenta)); }
.kofi-card > p:not(.fine) { max-width: 620px; color: #d6d4e4; margin: 24px 0 32px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 36px var(--gutter) 48px; color: var(--muted); font-size: 14px; text-align: center; }
.foot p { margin: 6px auto; max-width: 900px; }
.foot a { color: var(--fg); }

/* ---------- phone ---------- */
@media (max-width: 760px) {
  body { font-size: 17px; }
  .nav { padding: 12px 16px; }
  .nav nav a:not(.nav-gh) { display: none; }
  .hero { padding: 100px 16px 64px; }
  .hero-bg { object-position: 38% 50%; }
  .scroll-cue { display: none; }
  .btn { padding: 14px 20px; font-size: 15px; }
  .card { flex-basis: 84vw; }
  .card-media { aspect-ratio: 1 / 1; max-height: 52svh; width: 100%; }
  .card figcaption { grid-template-columns: 1fr; }
  .card .num { grid-row: auto; padding: 0; }
  .card .tag { display: block; margin: 8px 0 0; top: 0; }
  .stage-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .write { grid-template-columns: 1fr; }
  .code pre { font-size: 12.5px; padding: 20px 18px; }
  th, td { padding: 14px 16px; font-size: 15px; }
  td b { font-size: 16px; display: block; margin: 0 0 2px; }
  .grid li { padding: 24px 20px; }
}

/* ---------- reduced motion: no scroll-jacked stage, no autoplay ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .showcase { height: auto !important; }
  .stage { position: static; height: auto; overflow: visible; padding-top: clamp(80px, 14vh, 160px); }
  .stage-count, .progress, .scroll-cue { display: none; }
  .track { flex-direction: column; transform: none !important; gap: 56px; max-width: var(--max); margin: 0 auto; }
  .card { flex-basis: auto; opacity: 1 !important; }
  .card-media { transform: none !important; }
  .start-ring, .scroll-cue span { animation: none; }
  .btn:hover { transform: none; }
}