/* Shared by index.html (landing) and demo.html. Page-specific styles live in landing.css / demo.css. */
:root {
  --bg: #0d1012;
  --card: #111518;
  --card-2: #161b1f;
  --line: #252a2e;
  --line-2: #33393e;
  --text: #ededed;
  --text-2: #b9bdc1;
  --muted: #80868c;
  --cream: #f9f5ea;
  --cream-ink: #0e1113;
  --sent: #4fc13e;
  --sent-soft: rgba(79, 193, 62, .16);
  --found: #8c7dff;
  --grad: linear-gradient(259deg, #187e08 -13.86%, #2d1ab9 71.58%);
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --nav-h: 68px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--bg); scroll-padding-top: calc(var(--nav-h) + 8px); }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--text); font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
button, select, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--cream); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.display {
  font: 300 clamp(48px, 7.8125vw, 80px)/1.02 var(--serif); letter-spacing: -0.02em; color: var(--cream);
  margin: 0; text-wrap: balance; font-optical-sizing: auto;
}
.h2 { font: 300 clamp(32px, 4vw, 48px)/1.08 var(--serif); letter-spacing: -0.015em; color: var(--cream); margin: 0; text-wrap: balance; }
.lead { font-size: clamp(16px, 1.4vw, 18px); line-height: 1.6; color: var(--text-2); margin: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer;
  background: var(--cream); color: var(--cream-ink); border: 1px solid var(--cream); border-radius: 6px;
  padding: 10px 20px; font: 500 16px/1.35 var(--sans); text-decoration: none; transition: background .2s, color .2s;
}
.btn:hover { background: transparent; color: var(--cream); }
.btn.ghost { background: transparent; color: var(--cream); border-color: var(--line-2); }
.btn.ghost:hover { border-color: var(--cream); }
.btn.sm { padding: 7px 14px; font-size: 14px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* sticky nav, translucent like the reference */
.nav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); }
.nav::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(rgba(13, 16, 18, .78) 0%, rgba(13, 16, 18, .5) 70%, rgba(13, 16, 18, 0) 100%);
}
.nav .wrap { position: relative; height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--cream);
  font: 500 19px/1 var(--sans); letter-spacing: -0.01em; }
.brand svg { width: 20px; height: 20px; }
.nav .links { margin-left: auto; display: flex; gap: 28px; font-size: 14px; }
.nav .links a { text-decoration: none; opacity: .8; transition: opacity .2s; }
.nav .links a:hover { opacity: 1; }
@media (max-width: 720px) { .nav .links { display: none; } .nav .btn { margin-left: auto; } }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }