/* ===== Forge · forgecharts.net ===== */
:root {
  --bg: #0a0a0b;
  --bg-soft: #101013;
  --panel: #131316;
  --line: #26262c;
  --line-soft: #1c1c21;
  --text: #ececf0;
  --muted: #9a9aa6;
  --dim: #6a6a76;
  --fire: #ff8a1e;
  --fire-2: #ffb23e;
  --ember: #ff5722;
  --radius: 16px;
  --maxw: 1180px;
  --shadow: 0 30px 80px -30px rgba(0,0,0,.85);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  background: var(--bg); color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.55; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== BACKGROUND / PARALLAX ===== */
.bg-forge { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-layer { position: absolute; inset: -20% 0; will-change: transform; }
.bg-glow {
  background:
    radial-gradient(680px 460px at 78% 4%, rgba(255,138,30,.18), transparent 60%),
    radial-gradient(720px 560px at 10% 12%, rgba(255,87,34,.11), transparent 60%),
    radial-gradient(1000px 800px at 50% 116%, rgba(53,208,224,.05), transparent 60%);
}
.bg-grid {
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 46px 46px; opacity: .6;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}

/* scroll progress bar */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--fire-2), var(--ember)); z-index: 100;
  box-shadow: 0 0 12px rgba(255,138,30,.6);
}

/* ===== REVEAL ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto; padding: 16px 24px;
}
.nav::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to bottom, rgba(10,10,11,.7), rgba(10,10,11,0));
  border-bottom: 1px solid transparent; backdrop-filter: blur(0px);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.nav.stuck::after { background: rgba(10,10,11,.82); border-bottom-color: var(--line-soft); backdrop-filter: blur(14px); }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 0 0 1px var(--line), 0 6px 20px -6px rgba(255,138,30,.5); }
.brand-name { font-weight: 800; letter-spacing: .22em; font-size: 15px; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--muted); font-size: 14.5px; font-weight: 500; transition: color .18s; }
.nav-links a:hover { color: var(--text); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 15px; border-radius: 12px; padding: 12px 22px;
  cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s, color .2s;
  border: 1px solid transparent; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-fire { background: linear-gradient(135deg, var(--fire-2), var(--ember)); color: #1a0e02; box-shadow: 0 12px 30px -10px rgba(255,120,30,.6); }
.btn-fire:hover { box-shadow: 0 16px 44px -10px rgba(255,120,30,.78); }
.btn-line { border-color: var(--line); color: var(--text); background: rgba(255,255,255,.02); }
.btn-line:hover { border-color: var(--fire); color: var(--fire-2); }
.btn-ghost { padding: 9px 16px; border: 1px solid var(--line); color: var(--text); font-size: 14px; }
.btn-ghost:hover { border-color: var(--fire); color: var(--fire-2); }

/* ===== HERO ===== */
.hero {
  position: relative; max-width: var(--maxw); margin: 0 auto;
  padding: 76px 24px 56px;
  display: grid; grid-template-columns: 1.05fr 1.1fr; gap: 48px; align-items: center;
}
.eyebrow {
  display: inline-block; font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: .18em; text-transform: uppercase; color: var(--fire-2);
  padding: 6px 12px; border: 1px solid rgba(255,138,30,.28); border-radius: 999px;
  background: rgba(255,138,30,.06); margin-bottom: 22px;
}
.hero h1 { font-size: clamp(38px, 5.4vw, 64px); line-height: 1.03; font-weight: 900; letter-spacing: -.025em; margin-bottom: 20px; }
.fire { background: linear-gradient(120deg, var(--fire-2), var(--ember)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 18.5px; color: var(--muted); max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; color: var(--dim); font-size: 13.5px; font-family: 'JetBrains Mono', monospace; }
.hero-meta .dot { color: var(--line); }
.hero-shot { will-change: transform; }

.shot-frame { position: relative; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #000; box-shadow: var(--shadow); }
.shot-frame img { width: 100%; }
.shot-badge {
  position: absolute; top: 12px; left: 12px; font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--fire-2);
  padding: 5px 10px; border: 1px solid rgba(255,138,30,.3); border-radius: 999px;
  background: rgba(10,10,11,.72); backdrop-filter: blur(6px);
}
.scroll-hint {
  position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
  color: var(--dim); font-size: 14px; animation: bob 1.8s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%,0);} 50% { transform: translate(-50%,7px);} }

/* ===== CHIPS ===== */
.chips {
  max-width: var(--maxw); margin: 6px auto 0; padding: 22px 24px;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
}
.chips span {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--muted);
  padding: 7px 13px; border: 1px solid var(--line-soft); border-radius: 999px; background: var(--panel);
}

/* ===== SECTIONS ===== */
.section { max-width: var(--maxw); margin: 0 auto; padding: 92px 24px; }
.section-head { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.section-head p { color: var(--muted); font-size: 17px; margin-top: 14px; }

/* ===== GRID CARDS ===== */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 24px;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(255,138,30,.35); box-shadow: 0 20px 50px -24px rgba(255,120,30,.4); }
.card-icon {
  width: 44px; height: 44px; display: grid; place-items: center; font-size: 20px;
  border-radius: 11px; margin-bottom: 16px; color: var(--fire-2);
  background: rgba(255,138,30,.09); border: 1px solid rgba(255,138,30,.2);
}
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* ===== SCROLLYTELLING ===== */
.story { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 60px; }
.story-inner { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.story-intro { margin-bottom: 30vh; }
.story-intro .eyebrow { margin-bottom: 16px; }
.story-intro h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.story-intro p { color: var(--muted); font-size: 17px; margin-top: 14px; }

.step {
  min-height: 62vh; display: flex; flex-direction: column; justify-content: center;
  opacity: .32; transition: opacity .4s ease; padding: 10px 0;
}
.step.active { opacity: 1; }
.step-num { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--fire-2); letter-spacing: .1em; }
.step h3 { font-size: clamp(22px, 3vw, 30px); font-weight: 800; margin: 8px 0 12px; letter-spacing: -.01em; }
.step p { color: var(--muted); font-size: 16.5px; max-width: 420px; }
.step.active h3 { background: linear-gradient(120deg, #fff, var(--fire-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.story-figure { height: 100%; }
.story-sticky { position: sticky; top: 96px; height: min(64vh, 560px); }
.story-sticky .shot-frame { height: 100%; }
.story-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center;
  opacity: 0; transform: scale(1.04); transition: opacity .6s ease, transform .8s ease;
}
.story-img.active { opacity: 1; transform: scale(1); }

/* ===== SHOWCASE ===== */
.showcase { display: flex; flex-direction: column; gap: 44px; }
.show-row { display: grid; grid-template-columns: 0.8fr 1.3fr; gap: 36px; align-items: center; }
.show-row.reverse { grid-template-columns: 1.3fr 0.8fr; }
.show-row.reverse .show-text { order: 2; }
.show-text h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.show-text p { color: var(--muted); font-size: 16px; max-width: 380px; }
.show-img { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #000; box-shadow: var(--shadow); will-change: transform; }

/* ===== DOWNLOAD ===== */
.download .dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 820px; margin: 0 auto; }
.dl-card {
  display: flex; flex-direction: column; gap: 6px; align-items: flex-start;
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  transition: transform .18s, border-color .2s, box-shadow .2s;
}
a.dl-card:hover { transform: translateY(-3px); border-color: var(--fire); box-shadow: 0 20px 50px -24px rgba(255,120,30,.45); }
.dl-os { font-size: 18px; font-weight: 700; }
.dl-arch { color: var(--muted); font-size: 14px; font-family: 'JetBrains Mono', monospace; }
.dl-btn { margin-top: 12px; font-weight: 600; font-size: 14.5px; color: var(--fire-2); padding: 9px 16px; border: 1px solid rgba(255,138,30,.3); border-radius: 10px; background: rgba(255,138,30,.06); }
.dl-card.soon { opacity: .5; }
.dl-card.soon .dl-btn { color: var(--dim); border-color: var(--line); background: transparent; }
.dl-note { text-align: center; color: var(--dim); font-size: 14px; margin-top: 26px; }

/* ===== FOOTER ===== */
.footer {
  max-width: var(--maxw); margin: 40px auto 0; padding: 40px 24px 64px;
  border-top: 1px solid var(--line-soft);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 10px; box-shadow: 0 0 0 1px var(--line); }
.footer-brand strong { display: block; letter-spacing: .2em; font-size: 14px; }
.footer-brand span { color: var(--dim); font-size: 13px; font-family: 'JetBrains Mono', monospace; }
.footer-legal { color: var(--dim); font-size: 12.5px; max-width: 560px; text-align: right; }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .hero-copy { text-align: center; }
  .lede { margin-left: auto; margin-right: auto; }
  .hero-cta, .hero-meta { justify-content: center; }
  .hero-shot { order: 2; }
  .scroll-hint { display: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .story-inner { grid-template-columns: 1fr; }
  .story-intro { margin-bottom: 8px; }
  .story-figure { order: -1; position: sticky; top: 72px; z-index: 1; }
  .story-sticky { position: static; height: 40vh; }
  .step { min-height: 40vh; }
  .show-row, .show-row.reverse { grid-template-columns: 1fr; }
  .show-row.reverse .show-text { order: 0; }
  .show-text { text-align: center; }
  .show-text p { margin: 0 auto; }
  .download .dl-grid { grid-template-columns: 1fr; }
  .footer { flex-direction: column; text-align: center; }
  .footer-legal { text-align: center; }
}
@media (max-width: 560px) {
  .nav-links a:not(.btn) { display: none; }
  .grid { grid-template-columns: 1fr; }
}