:root {
  --ink: #0e0f12;
  --paper: #f5f2ec;
  --moss: #3f6e52;
  --clay: #c9663b;
  --sky: #7fa8d9;
  --line: rgba(245, 242, 236, 0.14);
  --dim: rgba(245, 242, 236, 0.6);
  --faint: rgba(245, 242, 236, 0.45);
}

* { box-sizing: border-box; }
html, body { margin: 0; }

body {
  background: var(--ink);
  color: var(--paper);
  font: 16px/1.55 "Space Grotesk", system-ui, sans-serif;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px 72px;
}

header { width: min(880px, 100%); margin-bottom: 32px; }
header .eyebrow {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 10px;
}
header h1 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 500;
  font-size: clamp(34px, 5.4vw, 52px);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
header p { margin: 0; color: var(--dim); max-width: 60ch; }
header code { color: var(--sky); font-size: 0.9em; }

/* ---- demo stage ------------------------------------------------------- */

.stage {
  position: relative;
  width: min(880px, 100%);
  cursor: crosshair;
  touch-action: none;
  overflow: hidden;
}

.card-clip { border-radius: 18px; overflow: hidden; }
.card { background: var(--paper); color: var(--ink); border-radius: 18px; overflow: hidden; }
.card .band {
  height: 110px;
  background:
    radial-gradient(120px 90px at 18% 30%, var(--clay) 0%, transparent 70%),
    radial-gradient(160px 110px at 55% 80%, var(--sky) 0%, transparent 70%),
    radial-gradient(220px 130px at 88% 20%, var(--moss) 0%, transparent 75%),
    repeating-linear-gradient(90deg, #14161a 0 22px, #1c1f24 22px 44px);
}
.card .body { padding: 26px 30px 30px; }
.card h2 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 500;
  font-size: 30px;
  margin: 0 0 10px;
}
.card p { margin: 0 0 16px; max-width: 62ch; color: #34373d; }
.card a { color: var(--clay); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.chips span {
  font-size: 13px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid #d8d2c6;
  color: #44484f;
}
.chips span.fill { background: var(--moss); border-color: var(--moss); color: var(--paper); }

.bars { display: flex; gap: 10px; align-items: flex-end; height: 72px; }
.bars i { flex: 1; border-radius: 6px 6px 2px 2px; display: block; }
.bars i:nth-child(1) { height: 38%; background: #d8d2c6; }
.bars i:nth-child(2) { height: 62%; background: var(--sky); }
.bars i:nth-child(3) { height: 46%; background: #d8d2c6; }
.bars i:nth-child(4) { height: 88%; background: var(--clay); }
.bars i:nth-child(5) { height: 70%; background: var(--moss); }
.bars i:nth-child(6) { height: 54%; background: #d8d2c6; }

/* ---- controls ---------------------------------------------------------- */

.controls {
  width: min(880px, 100%);
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.controls label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: rgba(245, 242, 236, 0.65);
}
.controls label b { color: var(--paper); font-weight: 500; }
.controls output { color: var(--sky); }
input[type="range"] { accent-color: var(--clay); width: 100%; }
input[type="color"] {
  width: 100%;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: none;
  cursor: pointer;
}

/* ---- segmented control demo ------------------------------------------- */

.seg-demo {
  position: relative;            /* the glass surface overlay anchors here */
  width: min(880px, 100%);
  margin-top: 44px;
  color: var(--dim);
}
.seg-demo h3 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 500;
  font-size: 24px;
  color: var(--paper);
  margin: 0 0 8px;
}
.seg-demo p { margin: 0 0 18px; max-width: 70ch; }

.segmented {
  position: relative;
  display: flex;
  max-width: 460px;
  padding: 6px;
  border-radius: 999px;
  /* a textured track gives the lens something worth refracting */
  background:
    radial-gradient(60% 150% at 12% 50%, rgba(201, 102, 59, 0.55), transparent 60%),
    radial-gradient(60% 150% at 50% 50%, rgba(127, 168, 217, 0.5), transparent 60%),
    radial-gradient(60% 150% at 88% 50%, rgba(63, 110, 82, 0.6), transparent 62%),
    #15171c;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.seg {
  flex: 1;
  appearance: none;
  border: 0;
  background: none;
  font: inherit;
  font-weight: 500;
  color: var(--dim);
  padding: 11px 8px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s;
}
.seg.is-active { color: var(--paper); }

/* ---- scrolling glass-nav demo ----------------------------------------- */

.scroll-demo {
  position: relative;
  width: min(880px, 100%);
  margin-top: 44px;
  color: var(--dim);
}
.scroll-demo h3 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 500;
  font-size: 24px;
  color: var(--paper);
  margin: 0 0 8px;
}
.scroll-demo > p { margin: 0 0 18px; max-width: 70ch; }
.scroll-demo .note { font-size: 13px; color: var(--faint); margin: 16px 0 0; }
.scroll-demo code { color: var(--sky); font-size: 0.9em; }

.page-frame {
  position: relative;
  max-width: 520px;
  height: 440px;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px var(--line), 0 14px 40px rgba(0, 0, 0, 0.32);
}
.page-scroll {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--paper);
  color: #2a2d33;
}
.page-inner { padding: 88px 24px 48px; }
.page-inner h4 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-size: 28px;
  color: #16181c;
  margin: 0 0 12px;
}
.page-inner h5 {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 24px 0 8px;
}
.page-inner p { margin: 0 0 14px; color: #3a3d44; }
.page-inner .block {
  height: 116px;
  border-radius: 12px;
  margin: 18px 0;
  display: flex;
  align-items: flex-end;
  padding: 14px 16px;
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-size: 22px;
  color: #fff;
  font-weight: 500;
}
.block-a { background: linear-gradient(120deg, #3f6e52, #7fa8d9); }
.block-b { background: linear-gradient(120deg, #c9663b, #6b3f8f); }
.block-c { background: linear-gradient(120deg, #234e70, #3f6e52); }

.glass-nav {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  pointer-events: none;
  color: #15171c;
}
.glass-nav .brand { font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }
.glass-nav .navlinks { display: flex; gap: 16px; }
.glass-nav .navlinks a {
  pointer-events: auto;
  color: #15171c;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.glass-nav .navlinks a:hover { color: var(--clay); }

/* ---- prose ------------------------------------------------------------- */

.prose { width: min(880px, 100%); margin-top: 44px; color: var(--dim); }
.prose h3 {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 500;
  font-size: 24px;
  color: var(--paper);
  margin: 0 0 8px;
}
.prose p { margin: 0 0 14px; max-width: 70ch; }
.prose code { color: var(--sky); font-size: 0.9em; }

footer {
  width: min(880px, 100%);
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--faint);
}
footer a { color: var(--sky); }