/* Helmy, on the web.
   The app's own black and its mascot's warmth: one quiet ground, one warm
   accent, Helmy itself where a picture of a feature would be. */

:root {
  --ground: #000000;
  --ground-2: #0a0a0a;
  --card: #0f0f0f;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.15);
  --ink: #f5f5f3;
  --muted: rgba(245, 245, 243, 0.6);
  --faint: rgba(245, 245, 243, 0.45);
  --accent: #f2a36b;
  --accent-deep: #e0864a;
  --accent-glow: rgba(242, 163, 107, 0.18);

  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --body: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;

  --gutter: clamp(20px, 5vw, 64px);
  --max: 1200px;
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p a { color: var(--accent); }
p a:hover { text-decoration: underline; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0;
}
h1 { font-size: clamp(48px, 7vw, 92px); }
h2 { font-size: clamp(32px, 4.4vw, 56px); }
h3 { font-size: clamp(20px, 2vw, 24px); letter-spacing: -0.02em; line-height: 1.25; }
p { margin: 0; }

.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.center { text-align: center; margin-inline: auto; }
.lead { font-size: clamp(16px, 1.35vw, 19px); line-height: 1.62; color: var(--muted); max-width: 620px; }
.accent { color: var(--accent); }
.eyebrow { font-size: 12.5px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); }

/* A fine grain over everything, so black reads as a surface, not a hole. */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 100; opacity: 0.05;
  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='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* Reveal on scroll (web/reveal.js adds .in). */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* Buttons. */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; line-height: 1; transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s; cursor: pointer; }
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-accent { background: var(--accent); color: #1a1008; }
.btn-accent:hover { background: #f6b384; }
.btn-light { background: var(--ink); color: #000; }
.btn-ghost { background: rgba(255,255,255,0.07); color: var(--ink); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn.disabled { opacity: 0.55; cursor: default; transform: none; }

/* The bar at the top. */
/* Clear at the top of the page, so the hero runs up behind it. Once the page
   scrolls, a blurred dark bar, with a fade below it rather than an edge. */
.nav { position: sticky; top: 0; z-index: 50; transition: background 0.25s ease, backdrop-filter 0.25s ease; }
.nav::after { content: ""; position: absolute; left: 0; right: 0; top: 100%; height: 28px; pointer-events: none;
  background: linear-gradient(to bottom, rgba(5,5,5,0.9), rgba(5,5,5,0)); opacity: 0; transition: opacity 0.25s ease; }
.nav.scrolled { background: rgba(5,5,5,0.9); -webkit-backdrop-filter: blur(24px) saturate(140%); backdrop-filter: blur(24px) saturate(140%); }
.nav.scrolled::after { opacity: 1; }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.brand img { border-radius: 7px; }
.links { display: flex; gap: 24px; margin-left: auto; font-size: 14.5px; color: var(--muted); }
.links a:hover { color: var(--ink); }
@media (max-width: 720px) { .links { display: none; } .nav .btn { margin-left: auto; } }

/* The opening. */
/* Under the bar, not below it: its glow runs up behind the bar's fade, so
   there is no edge where one ends and the other begins. */
.hero { position: relative; margin-top: -64px; padding: calc(clamp(56px, 9vw, 120px) + 64px) 0 40px; overflow: hidden; }
.glow-field { position: absolute; inset: 0 -10% auto; height: 860px; pointer-events: none;
  background: radial-gradient(600px 380px at 72% 30%, var(--accent-glow), transparent 70%),
              radial-gradient(500px 300px at 20% 10%, rgba(120,140,255,0.08), transparent 70%); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 40px; align-items: center; }
.hero .copy { display: flex; flex-direction: column; gap: 22px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.cta.center { justify-content: center; }
.note { font-size: 14px; color: var(--faint); }
.hero-art { position: relative; justify-self: center; }
.mascot { width: clamp(220px, 26vw, 320px); height: auto; filter: drop-shadow(0 24px 48px rgba(242,163,107,0.25)); animation: float 6s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-12px) rotate(-1.5deg); } }
.shot-wrap { margin-top: clamp(48px, 7vw, 88px); }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
}

/* A Mac window, and a phone, round screenshots. */
.mac { margin: 0; position: relative; border-radius: 2.2% / 3.4%; overflow: hidden; border: 1px solid var(--line-strong);
  background: #111; box-shadow: 0 40px 120px rgba(0,0,0,0.7), 0 0 0 1px rgba(0,0,0,0.6), 0 0 80px var(--accent-glow); }
.mac img { width: 100%; height: auto; }
.phone { margin: 0 auto; width: min(300px, 80%); border-radius: 44px; overflow: hidden; border: 10px solid #111;
  box-shadow: 0 0 0 1.5px #333, 0 40px 100px rgba(0,0,0,0.7), 0 0 80px var(--accent-glow); }
.phone img { width: 100%; height: auto; }

/* The tools it works through. */
.works { padding: 56px 0 24px; display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center; }
.works-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.works-chip { display: flex; align-items: center; gap: 9px; padding: 10px 16px; border-radius: 999px;
  background: var(--card); font-weight: 500; font-size: 15px; }
.works-chip img { filter: invert(1); opacity: 0.9; }
.works-dot { width: 14px; height: 14px; border-radius: 3px; background: var(--ink); }
.works p { max-width: 640px; }

/* A feature: words and a picture, side by side. */
.feature { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 88px); align-items: center; padding: 40px 0; }
.feature.flip .feature-copy { order: 2; }
.feature-copy { display: flex; flex-direction: column; gap: 18px; }
.points { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.points li { position: relative; padding-left: 26px; color: var(--ink); }
.points li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 12px; height: 2px; background: var(--accent); border-radius: 2px; }
@media (max-width: 860px) {
  .feature { grid-template-columns: 1fr; }
  .feature.flip .feature-copy { order: 0; }
}

/* Helmy, holding what a feature is about. */
.pose { position: relative; display: grid; place-items: center; padding: 24px; }
.pose-glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, var(--accent-glow), transparent 70%); }
.pose img { position: relative; width: clamp(220px, 26vw, 320px); height: auto; }

/* The marks between sections (from Funnier's kit). */
.divider { display: grid; place-items: center; color: rgba(255,255,255,0.22); padding: 24px 0; }
.divider svg { width: var(--w); height: auto; }

/* Approvals. */
.approvals { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(32px, 6vw, 88px); align-items: center; padding: 56px 0; }
.stat { padding: 32px; border-radius: var(--radius); background: var(--card); display: grid; gap: 12px; }
.stat-number { font-family: var(--display); font-weight: 800; font-size: clamp(72px, 10vw, 128px); line-height: 0.9; letter-spacing: -0.05em; color: var(--accent); }
.approvals-copy { display: flex; flex-direction: column; gap: 18px; }
.ask-card { padding: 18px 20px; border-radius: 14px; background: #141414; display: grid; gap: 14px; max-width: 460px; }
.ask-q { font-weight: 600; }
.ask-buttons { display: flex; gap: 8px; }
.ask-buttons .btn { cursor: default; }
@media (max-width: 860px) { .approvals { grid-template-columns: 1fr; } }

/* Getting it. */
.get { display: flex; flex-direction: column; align-items: center; gap: 22px; text-align: center; padding: 48px 0 96px; }
.get-mascot { width: 180px; height: auto; }

/* Other pages. */
.page-head { padding-top: clamp(64px, 9vw, 120px); padding-bottom: 32px; display: flex; flex-direction: column; gap: 18px; }
.releases { display: grid; gap: 28px; padding-bottom: 96px; }
.release { padding: 24px; border-radius: var(--radius); background: var(--card); }
.release ul { margin: 12px 0 0; padding-left: 18px; color: var(--muted); }

/* The foot. */
.footer { padding: 40px 0 56px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 24px 40px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 14.5px; }
.footer-links a:hover { color: var(--ink); }

/* Open source. */
.open { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(32px, 6vw, 88px); align-items: center; padding: 40px 0; }
.open-copy { display: flex; flex-direction: column; gap: 18px; }
@media (max-width: 860px) { .open { grid-template-columns: 1fr; } }

/* Download: the latest release's files, grouped by system. */
.download { max-width: 860px; padding-top: clamp(64px, 9vw, 112px); padding-bottom: 96px; display: flex; flex-direction: column; gap: 28px; }
.download-head { display: flex; align-items: center; justify-content: center; gap: 18px; }
.download-head img { border-radius: 15px; }
.download-head h1 { font-size: clamp(36px, 5vw, 56px); }
.download-version { text-align: center; color: var(--faint); font-size: 14px; }
.download-version a:hover { color: var(--ink); }
.download-system { display: grid; gap: 14px; margin-top: 12px; }
.download-system h2 { font-size: 20px; letter-spacing: -0.01em; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 12px; }
.download-card { display: flex; align-items: center; gap: 14px; padding: 18px 20px; border-radius: 14px; background: var(--card); transition: background 0.2s ease, transform 0.2s ease; }
.download-card:hover { background: #1b1b1b; transform: translateY(-1px); }
.download-card img { border-radius: 8px; flex: none; }
.download-name { font-weight: 600; }
.download-meta { color: var(--faint); font-size: 14px; }