/* ============================================================
   hush One — soft-UI instrument panel
   One pale slab, light from upper-left, one warm amber accent.
   ============================================================ */

/* ---------- fonts ---------- */
@font-face {
  font-family: 'Nunito';
  font-style: normal;
  font-weight: 200 1000;
  font-display: swap;
  src: url('../fonts/nunito-var.woff2') format('woff2');
}
@font-face {
  font-family: 'Nunito';
  font-style: italic;
  font-weight: 200 1000;
  font-display: swap;
  src: url('../fonts/nunito-var-italic.woff2') format('woff2');
}
@font-face {
  font-family: 'DSEG7';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dseg7-classic.woff2') format('woff2');
}
@font-face {
  font-family: 'DSEG7';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/dseg7-classic-bold.woff2') format('woff2');
}

/* ---------- theme tokens ---------- */
:root {
  --font-ui: 'Nunito', -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-lcd: 'DSEG7', 'Nunito', monospace;

  /* the single warm accent — the LED color of the whole product */
  --accent: #e8893c;
  --accent-deep: #8f551d;
  --accent-ink: #4a2c10;
  --accent-glow: rgba(232, 137, 60, .55);
  --accent-soft: rgba(232, 137, 60, .16);
  --lcd: #e8a05a;
  --lcd-dim: rgba(120, 100, 80, .24);

  --spring: cubic-bezier(.32, 1.65, .48, 1);
  --ease-out: cubic-bezier(.22, .9, .3, 1);

  --warm: .6;               /* set live by the warmth slider 0..1 */
  --glow-op: .5;

  --nav-h: 72px;
  --radius-slab: 46px;
}

/* bone — warm chalk (default) */
:root, :root[data-theme='bone'] {
  --bg: #e6e1d7;
  --bg-hi: #ece8df;
  --bg-lo: #dcd6c9;
  --well: #ded8cb;
  --ink: #4c473c;
  --ink-soft: #5f594c;
  --ink-faint: #68604f;
  --sh-d: rgba(158, 148, 126, .55);
  --sh-d-deep: rgba(140, 130, 108, .65);
  --sh-d-hair: rgba(140, 130, 108, .30);
  --sh-l: rgba(255, 255, 255, .80);
  --sh-l-soft: rgba(255, 255, 255, .48);
  --edge-hi: rgba(255, 255, 255, .65);
  --edge-lo: rgba(120, 110, 88, .10);
  --grad-hi: #eae6dd;
  --grad-lo: #ddd7ca;
  color-scheme: light;
}

/* slate — cool fog */
:root[data-theme='slate'] {
  --bg: #dee2e9;
  --bg-hi: #e5e8ef;
  --bg-lo: #d4d9e1;
  --well: #d6dae2;
  --ink: #41464f;
  --ink-soft: #565d68;
  --ink-faint: #5a636f;
  --sh-d: rgba(139, 149, 168, .55);
  --sh-d-deep: rgba(120, 131, 152, .65);
  --sh-d-hair: rgba(120, 131, 152, .30);
  --sh-l: rgba(255, 255, 255, .82);
  --sh-l-soft: rgba(255, 255, 255, .5);
  --edge-hi: rgba(255, 255, 255, .65);
  --edge-lo: rgba(96, 106, 128, .10);
  --grad-hi: #e3e6ec;
  --grad-lo: #d5dae2;
  --lcd: #e8a05a;
  --lcd-dim: rgba(90, 100, 118, .24);
}

/* sage — dried herb */
:root[data-theme='sage'] {
  --bg: #dde3d7;
  --bg-hi: #e4e9df;
  --bg-lo: #d3d9cb;
  --well: #d5dbd0;
  --ink: #434b3f;
  --ink-soft: #586251;
  --ink-faint: #5c6653;
  --sh-d: rgba(139, 152, 128, .55);
  --sh-d-deep: rgba(120, 134, 108, .65);
  --sh-d-hair: rgba(120, 134, 108, .30);
  --sh-l: rgba(255, 255, 255, .80);
  --sh-l-soft: rgba(255, 255, 255, .48);
  --edge-hi: rgba(255, 255, 255, .62);
  --edge-lo: rgba(98, 112, 88, .10);
  --grad-hi: #e2e7dc;
  --grad-lo: #d4dacc;
}

/* blush — faded rose */
:root[data-theme='blush'] {
  --bg: #eadfdd;
  --bg-hi: #f0e6e4;
  --bg-lo: #e1d5d2;
  --well: #e3d8d5;
  --ink: #4e4344;
  --ink-soft: #635558;
  --ink-faint: #6d5f61;
  --sh-d: rgba(168, 138, 136, .52);
  --sh-d-deep: rgba(150, 118, 116, .62);
  --sh-d-hair: rgba(150, 118, 116, .28);
  --sh-l: rgba(255, 255, 255, .78);
  --sh-l-soft: rgba(255, 255, 255, .46);
  --edge-hi: rgba(255, 255, 255, .6);
  --edge-lo: rgba(122, 94, 92, .10);
  --grad-hi: #eee4e2;
  --grad-lo: #e2d6d3;
  --lcd-dim: rgba(120, 96, 94, .24);
}

/* ---------- shadow grammar (light: upper-left) ---------- */
:root {
  --raise-xs: -3px -3px 7px var(--sh-l), 3px 3px 7px var(--sh-d);
  --raise-sm: -5px -5px 11px var(--sh-l), 5px 5px 11px var(--sh-d);
  --raise-md: -9px -9px 18px var(--sh-l), 9px 9px 18px var(--sh-d);
  --raise-lg: -18px -18px 38px var(--sh-l), 18px 18px 38px var(--sh-d);
  --raise-xl: -26px -26px 54px var(--sh-l), 26px 26px 54px var(--sh-d);
  --raise-xs-h: -4px -4px 9px var(--sh-l), 5px 6px 12px var(--sh-d);
  --raise-sm-h: -7px -7px 15px var(--sh-l), 8px 10px 20px var(--sh-d);
  --press-sm: inset -3px -3px 7px var(--sh-l), inset 3px 3px 7px var(--sh-d-deep);
  --press-md: inset -5px -5px 11px var(--sh-l), inset 5px 5px 11px var(--sh-d-deep);
  --press-lg: inset -8px -8px 16px var(--sh-l), inset 8px 8px 16px var(--sh-d-deep);
  --edge: inset 1px 1px 1px var(--edge-hi), inset -1px -1px 1px var(--edge-lo);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 500;
  color: var(--ink);
  background: var(--bg);
  background-image: radial-gradient(120% 90% at 50% 0%, var(--bg-hi) 0%, var(--bg) 55%, var(--bg-lo) 130%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background-color .5s ease;
  overflow-x: hidden;
}
::selection { background: var(--accent-soft); color: var(--accent-ink); }

img, svg { display: block; }
main { position: relative; z-index: 1; }
button { font: inherit; color: inherit; }
a { color: inherit; }

:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 12px;
}

.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 100;
  background: var(--bg-hi); color: var(--ink);
  padding: 10px 18px; border-radius: 14px; text-decoration: none;
  box-shadow: var(--raise-sm); transition: top .25s var(--ease-out);
}
.skip-link:focus-visible { top: 14px; }

/* warm lamp glow cast by the device’s light-warmth slider */
.page-glow {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(58% 42% at 50% -4%, rgba(255, 176, 96, calc(.30 * var(--warm))) 0%, rgba(255, 176, 96, 0) 70%);
  transition: opacity .4s ease;
}

/* ---------- shared type ---------- */
.eyebrow {
  margin: 0 0 10px;
  font-size: 12px; font-weight: 800;
  letter-spacing: .28em; text-transform: uppercase;
  color: var(--ink-faint);
}
h1, h2, h3 { font-weight: 800; letter-spacing: -.01em; }
.sec-head { max-width: 660px; margin: 0 auto 46px; text-align: center; padding: 0 20px; }
.sec-head h2 { font-size: clamp(28px, 4.4vw, 44px); margin: 0 0 14px; }
.sec-sub { margin: 0; font-size: clamp(15px, 1.8vw, 18px); line-height: 1.65; color: var(--ink-soft); }

/* engraved (letterpress) text — for labels etched into the slab */
.etch, .ctl-label, .slider-val, .foot-etch {
  color: var(--ink-faint);
  text-shadow: 0 1px 0 var(--edge-hi);
}
.ctl-label {
  font-size: 11px; font-weight: 800;
  letter-spacing: .18em; text-transform: uppercase;
}

/* ---------- LED — the one warm accent ---------- */
.led {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--well);
  box-shadow: var(--press-sm);
  transition: background .3s ease, box-shadow .3s ease;
}
.led.on {
  background: radial-gradient(circle at 34% 30%, #ffd9ae, var(--accent) 62%);
  box-shadow:
    0 0 6px 1px var(--accent-glow),
    0 0 16px 3px rgba(232, 137, 60, .30),
    inset -1px -1px 2px rgba(255,255,255,.5),
    inset 1px 1px 2px rgba(140, 80, 20, .4);
}
.led.breathing { animation: led-breathe 3.6s ease-in-out infinite; }
/* the active preset's LED pulses softly — the channel is alive */
.preset[aria-pressed='true'] .preset-led,
.led.on.pulsing {
  background: radial-gradient(circle at 34% 30%, #ffd9ae, var(--accent) 62%);
  animation: led-pulse 2.4s ease-in-out infinite;
}
@keyframes led-pulse {
  0%, 100% { box-shadow: 0 0 5px 1px var(--accent-glow), 0 0 12px 2px rgba(232,137,60,.24), inset -1px -1px 2px rgba(255,255,255,.5), inset 1px 1px 2px rgba(140,80,20,.4); }
  50% { box-shadow: 0 0 8px 2px var(--accent-glow), 0 0 22px 6px rgba(232,137,60,.38), inset -1px -1px 2px rgba(255,255,255,.5), inset 1px 1px 2px rgba(140,80,20,.4); }
}
@keyframes led-breathe {
  0%, 100% { background: var(--well); box-shadow: var(--press-sm); }
  50% {
    background: radial-gradient(circle at 34% 30%, #ffd9ae, var(--accent) 62%);
    box-shadow: 0 0 7px 1px var(--accent-glow), 0 0 18px 4px rgba(232,137,60,.28),
      inset -1px -1px 2px rgba(255,255,255,.5), inset 1px 1px 2px rgba(140,80,20,.4);
  }
}

/* ---------- generic soft button ---------- */
.soft-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 26px; border: 0; border-radius: 18px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  color: var(--ink); font-weight: 800; font-size: 15px;
  text-decoration: none; cursor: pointer; user-select: none;
  box-shadow: var(--raise-sm), var(--edge);
  transition: box-shadow .22s var(--ease-out), transform .22s var(--spring),
              background .4s ease, color .3s ease;
}
.soft-btn:hover { transform: translateY(-2px); box-shadow: var(--raise-sm-h), var(--edge); }
.soft-btn:active, .soft-btn.pressed {
  transform: translateY(1px) scale(.985);
  box-shadow: var(--press-sm), var(--edge);
}
.soft-btn.primary {
  background: linear-gradient(150deg, #f5a35c, var(--accent) 55%, #d9772c);
  color: var(--accent-ink);
  text-shadow: 0 1px 0 rgba(255, 255, 255, .35);
  box-shadow: var(--raise-sm), var(--edge);
}
.soft-btn.primary:hover { box-shadow: var(--raise-sm-h), var(--edge), 0 0 18px rgba(232,137,60,.30); }
.soft-btn.primary:active {
  box-shadow: var(--press-sm), inset 0 2px 6px rgba(140, 80, 20, .45);
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky; top: 14px; z-index: 50;
  padding: 0 18px; margin-top: 14px;
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; height: var(--nav-h);
  display: flex; align-items: center; gap: 26px;
  padding: 0 14px 0 26px;
  border-radius: 22px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  transition: box-shadow .4s ease, background .5s ease;
}
.nav.scrolled .nav-inner { box-shadow: var(--raise-md), var(--edge); }
.wordmark {
  font-size: 22px; font-weight: 800; letter-spacing: -.02em;
  text-decoration: none; color: var(--ink);
}
.wordmark-one { color: var(--accent-deep); font-weight: 800; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-link {
  position: relative;
  padding: 9px 15px; border-radius: 12px;
  font-size: 14px; font-weight: 700; text-decoration: none;
  color: var(--ink-soft);
  transition: color .2s ease, box-shadow .25s var(--spring), background .25s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active {
  color: var(--ink);
  box-shadow: var(--press-sm);
  background: var(--well);
}
.nav-cta { padding: 11px 20px; font-size: 14px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  max-width: 900px; margin: 0 auto;
  padding: clamp(70px, 11vh, 120px) 24px 40px;
  text-align: center;
}
.hero-halo {
  position: absolute; left: 50%; top: 46%;
  width: min(560px, 88vw); aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.halo-ring {
  position: absolute; inset: 0; border-radius: 50%;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-xl), var(--edge);
  opacity: .55;
}
.halo-ring::after {
  content: ''; position: absolute; inset: 11%;
  border-radius: 50%; background: var(--bg);
  box-shadow: var(--press-md);
}
.halo-dot {
  position: absolute; left: 50%; top: 9%; width: 12px; height: 12px;
  margin-left: -6px; border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #ffd9ae, var(--accent) 62%);
  box-shadow: 0 0 8px 1px var(--accent-glow), 0 0 20px 4px rgba(232,137,60,.3);
  animation: led-breathe 3.6s ease-in-out infinite;
}
.hero-title {
  position: relative;
  margin: 0;
  font-size: clamp(56px, 11vw, 116px);
  line-height: .95; letter-spacing: -.045em;
}
.hero-one { color: var(--accent-deep); }
.tagline {
  position: relative;
  max-width: 560px; margin: 26px auto 0;
  font-size: clamp(16px, 2vw, 19px); line-height: 1.7;
  color: var(--ink-soft);
}
.hero-cta {
  position: relative;
  display: flex; flex-wrap: wrap; gap: 16px; justify-content: center;
  margin-top: 38px;
}
.scroll-cue {
  position: relative;
  display: inline-flex; flex-direction: column; align-items: center; gap: 10px;
  margin-top: 58px; text-decoration: none;
}
.cue-pill {
  width: 30px; height: 50px; border-radius: 999px;
  background: var(--well);
  box-shadow: var(--press-sm);
  display: flex; justify-content: center; padding-top: 8px;
}
.cue-nub {
  width: 10px; height: 14px; border-radius: 999px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-xs);
  animation: cue-slide 2.2s var(--ease-out) infinite;
}
@keyframes cue-slide {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(16px); opacity: .2; }
  100% { transform: translateY(0); opacity: 0; }
}
.cue-text { font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-faint); text-shadow: 0 1px 0 var(--edge-hi); }

/* ============================================================
   THE SLAB — device faceplate
   ============================================================ */
.panel-section { padding: clamp(60px, 9vw, 110px) 20px 20px; }
.slab-wrap { max-width: 1020px; margin: 0 auto; }
.slab {
  position: relative;
  border-radius: var(--radius-slab);
  padding: clamp(22px, 3.6vw, 44px);
  background: linear-gradient(152deg, var(--grad-hi) 0%, var(--bg) 46%, var(--grad-lo) 100%);
  box-shadow: var(--raise-lg), var(--edge);
  transition: background .5s ease, box-shadow .5s ease;
}
.slab::before { /* fine molded rim */
  content: ''; position: absolute; inset: 10px;
  border-radius: calc(var(--radius-slab) - 10px);
  box-shadow: inset 0 1px 0 var(--edge-hi), inset 0 -1px 0 var(--edge-lo);
  pointer-events: none;
}

.slab-top {
  display: flex; align-items: center; gap: 18px;
  padding: 2px 8px 22px;
}
.brand-etch { font-size: 15px; font-weight: 800; letter-spacing: .5em; }
.model-etch { font-size: 11px; font-weight: 700; letter-spacing: .3em; margin-left: auto; }
.standby-led { flex: none; }

.slab-grid {
  display: grid;
  grid-template-columns: minmax(300px, 380px) 1fr;
  gap: clamp(24px, 4vw, 54px);
  align-items: center;
}

/* ---------- dial ---------- */
.dial-block { display: flex; flex-direction: column; align-items: center; gap: 22px; }
.dial-frame {
  position: relative;
  width: min(320px, 72vw); aspect-ratio: 1;
  border-radius: 50%;
  display: grid; place-items: center;
}
.dial-arc {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    conic-gradient(from 225deg, var(--accent) calc(var(--p, .4) * 270deg), rgba(0,0,0,0) 0deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 9px), #000 calc(100% - 8px));
          mask: radial-gradient(farthest-side, transparent calc(100% - 9px), #000 calc(100% - 8px));
  opacity: .9;
}
.dial-ticks { position: absolute; inset: 0; border-radius: 50%; }
.tick {
  position: absolute; left: 50%; top: 50%;
  width: 3px; height: 9px; margin-left: -1.5px;
  border-radius: 2px;
  background: var(--ink-faint); opacity: .5;
  transform-origin: 50% 0;
}
.tick.major { width: 4px; height: 13px; margin-left: -2px; }
.tick.lit { background: var(--accent); opacity: 1; box-shadow: 0 0 5px var(--accent-glow); }

.dial {
  position: relative;
  width: 76%; aspect-ratio: 1; border-radius: 50%;
  cursor: grab; touch-action: none;
  outline-offset: 6px;
}
.dial:active { cursor: grabbing; }
.dial-cap {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    repeating-conic-gradient(from 0deg,
      rgba(255,255,255,.045) 0deg 2deg, rgba(0,0,0,.028) 2deg 4deg),
    linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-md), var(--edge);
  will-change: transform;
}
.dial-face {
  position: absolute; inset: 30%; border-radius: 50%;
  background: linear-gradient(145deg, var(--grad-lo), var(--grad-hi));
  box-shadow: var(--press-sm);
  pointer-events: none;
}
.dial-pointer {
  position: absolute; left: 50%; top: 7%;
  width: 12px; height: 30px; margin-left: -6px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--grad-lo), var(--grad-hi));
  box-shadow: var(--press-sm);
}
.dial-pointer::after {
  content: ''; position: absolute; left: 50%; top: 6px;
  width: 4px; height: 10px; margin-left: -2px;
  border-radius: 4px; background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
}
.dial:hover .dial-cap { box-shadow: var(--raise-md), var(--edge), 0 0 0 1px var(--sh-l-soft); }
.dial.grabbing .dial-cap { box-shadow: var(--raise-sm), var(--edge); }

/* readout */
.readout { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.lcd-well {
  position: relative;
  min-width: 178px; padding: 14px 22px 12px;
  border-radius: 20px;
  background: linear-gradient(160deg, #cfc9ba, var(--well) 40%, var(--well));
  box-shadow: var(--press-md);
  display: flex; align-items: baseline; justify-content: center; gap: 6px;
}
.lcd-ghost, .lcd {
  font-family: var(--font-lcd); font-size: 34px; font-weight: 400;
  letter-spacing: .02em;
}
.lcd-ghost { position: absolute; left: 22px; top: 14px; color: var(--lcd-dim); }
.lcd {
  position: relative;
  color: var(--lcd);
  text-shadow: 0 0 10px rgba(232, 137, 60, .45);
  transition: color .3s ease, text-shadow .3s ease;
}
.lcd-unit { font-family: var(--font-ui); font-size: 15px; font-weight: 800; color: var(--ink-faint); text-shadow: 0 1px 0 var(--edge-hi); }
.readout-sub { font-size: 11px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-faint); text-shadow: 0 1px 0 var(--edge-hi); }

/* ---------- controls column ---------- */
.controls-col { display: flex; flex-direction: column; gap: clamp(24px, 3vw, 38px); }

.toggle-row {
  display: flex; flex-wrap: wrap; gap: clamp(14px, 2vw, 26px);
  justify-content: space-between;
}
.toggle-ctl { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.toggle {
  position: relative; width: 98px; height: 56px;
  border: 0; border-radius: 999px; padding: 0;
  background: transparent; cursor: pointer;
}
.toggle-track {
  position: absolute; inset: 0; border-radius: 999px;
  background: var(--well);
  box-shadow: var(--press-md);
  transition: box-shadow .3s ease, background .3s ease;
}
.toggle-puck {
  position: absolute; top: 7px; left: 7px;
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  display: grid; place-items: center;
  transition: transform .34s var(--spring), box-shadow .3s ease;
}
.puck-ico svg { width: 20px; height: 20px; stroke: var(--ink-faint); stroke-width: 2.1; fill: none; stroke-linecap: round; stroke-linejoin: round; transition: stroke .25s ease; }
.toggle:hover .toggle-puck { box-shadow: var(--raise-sm-h), var(--edge); }
.toggle:active .toggle-puck { transform: scale(.92); box-shadow: var(--raise-xs), var(--edge); }
.toggle[aria-checked='true'] .toggle-puck { transform: translateX(42px); }
.toggle[aria-checked='true']:active .toggle-puck { transform: translateX(42px) scale(.92); }
.toggle[aria-checked='true'] .puck-ico svg { stroke: var(--accent-deep); }
.toggle[aria-checked='true'] .toggle-track {
  box-shadow: var(--press-md), inset -14px 0 22px -14px var(--accent-glow);
}
.toggle-led { margin-top: 2px; }

/* ---------- sliders ---------- */
.slider-stack { display: flex; flex-direction: column; gap: clamp(18px, 2.4vw, 28px); }
.slider-ctl { display: flex; flex-direction: column; gap: 4px; }
.slider-head { display: flex; align-items: baseline; justify-content: space-between; padding: 0 4px; }
.slider-val { font-size: 13px; font-weight: 800; font-variant-numeric: tabular-nums; }

.slider {
  --v: 50%;
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 44px; margin: 0;
  background: transparent; cursor: pointer;
  touch-action: pan-y;
}
.slider::-webkit-slider-runnable-track {
  height: 18px; border-radius: 999px;
  background:
    linear-gradient(90deg, var(--accent-soft) var(--v), rgba(0,0,0,0) var(--v)),
    var(--well);
  box-shadow: var(--press-md);
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 32px; height: 32px; margin-top: -7px;
  border: 0; border-radius: 50%;
  background:
    radial-gradient(circle at 50% 42%, rgba(255,255,255,.0) 44%, rgba(0,0,0,.03) 60%),
    linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  transition: transform .18s var(--spring), box-shadow .2s ease;
}
.slider::-moz-range-track {
  height: 18px; border-radius: 999px;
  background: var(--well);
  box-shadow: var(--press-md);
}
.slider::-moz-range-progress {
  height: 18px; border-radius: 999px;
  background: var(--accent-soft);
}
.slider::-moz-range-thumb {
  width: 32px; height: 32px; border: 0; border-radius: 50%;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  transition: transform .18s var(--spring), box-shadow .2s ease;
}
.slider:hover::-webkit-slider-thumb { box-shadow: var(--raise-sm-h), var(--edge); }
.slider:active::-webkit-slider-thumb { transform: scale(.88); box-shadow: var(--raise-xs), var(--edge); }
.slider:hover::-moz-range-thumb { box-shadow: var(--raise-sm-h), var(--edge); }
.slider:active::-moz-range-thumb { transform: scale(.88); box-shadow: var(--raise-xs), var(--edge); }

/* ---------- presets ---------- */
.preset-block { margin-top: clamp(26px, 4vw, 44px); }
.preset-head {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 2px 14px;
  padding: 0 8px 14px;
}
.preset-note { font-size: 12px; font-weight: 700; color: var(--ink-faint); }
.preset-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 20px);
}
.preset {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 18px 10px 16px;
  border: 0; border-radius: 26px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  cursor: pointer; user-select: none;
  transition: box-shadow .2s var(--ease-out), transform .18s var(--spring);
}
.preset:hover { transform: translateY(-2px); box-shadow: var(--raise-sm-h), var(--edge); }
.preset:active { transform: translateY(1px) scale(.97); box-shadow: var(--press-sm), var(--edge); }
.preset-ico svg { width: 26px; height: 26px; stroke: var(--ink-soft); stroke-width: 1.9; fill: none; stroke-linecap: round; stroke-linejoin: round; transition: stroke .25s ease; }
.preset-name { font-size: 13px; font-weight: 800; letter-spacing: .02em; }
.preset-led { width: 8px; height: 8px; }
.preset[aria-pressed='true'] {
  transform: translateY(1px);
  box-shadow: var(--press-md), var(--edge);
  background: linear-gradient(145deg, var(--grad-lo), var(--grad-hi));
}
.preset[aria-pressed='true'] .preset-ico svg { stroke: var(--accent-deep); }
.preset[aria-pressed='true'] .preset-name { color: var(--accent-deep); }

/* ---------- slab foot ---------- */
.slab-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: 16px 10px 0;
}
.foot-etch { font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.status-line { font-size: 13px; font-weight: 700; color: var(--ink-soft); text-align: right; }

.panel-note {
  max-width: 560px; margin: 34px auto 0; text-align: center;
  font-size: 14px; line-height: 1.6; color: var(--ink-faint);
}

/* ---------- powered-off ---------- */
.slab[data-powered='false'] .dial,
.slab[data-powered='false'] .slider,
.slab[data-powered='false'] .preset,
.slab[data-powered='false'] .toggle:not(#tgl-power) {
  cursor: default;
}
.slab[data-powered='false'] .dial-cap {
  box-shadow: var(--press-sm);
  background: linear-gradient(145deg, var(--grad-lo), var(--grad-hi));
}
.slab[data-powered='false'] .lcd { color: var(--lcd-dim); text-shadow: none; }
.slab[data-powered='false'] .lcd-unit { opacity: .5; }
.slab[data-powered='false'] .dial-arc { opacity: .25; }
.slab[data-powered='false'] .tick.lit { background: var(--ink-faint); box-shadow: none; opacity: .5; }
.slab[data-powered='false'] .toggle:not(#tgl-power) .toggle-track,
.slab[data-powered='false'] .preset,
.slab[data-powered='false'] .slider::-webkit-slider-runnable-track {
  box-shadow: var(--press-sm);
}
.slab[data-powered='false'] .toggle:not(#tgl-power) .toggle-puck,
.slab[data-powered='false'] .slider::-webkit-slider-thumb {
  box-shadow: var(--raise-xs);
}
.slab[data-powered='false'] .slider::-moz-range-thumb { box-shadow: var(--raise-xs); }
.slab[data-powered='false'] .slider::-moz-range-track { box-shadow: var(--press-sm); }
.slab[data-powered='false'] .slider { opacity: .7; }
.slab[data-powered='false'] .preset-ico svg { opacity: .55; }
.slab[data-powered='false'] .toggle:not(#tgl-power) .puck-ico svg { opacity: .55; }

/* night mode — display and LEDs soften */
.slab.night .lcd { text-shadow: 0 0 6px rgba(232,137,60,.3); filter: brightness(.82); }
.slab.night .led.on { box-shadow: 0 0 4px 1px var(--accent-glow), inset -1px -1px 2px rgba(255,255,255,.5), inset 1px 1px 2px rgba(140,80,20,.4); }
.slab.night .dial-arc { opacity: .65; }

/* ============================================================
   FEATURES
   ============================================================ */
.features { padding: clamp(80px, 11vw, 140px) 20px 0; }
.card-grid {
  max-width: 1080px; margin: 0 auto;
  display: grid; gap: clamp(18px, 2.6vw, 30px);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.card {
  padding: clamp(24px, 3vw, 34px);
  border-radius: 32px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-md), var(--edge);
  transition: box-shadow .3s var(--ease-out), transform .3s var(--spring), background .5s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--raise-lg), var(--edge); }
.card-ico {
  width: 58px; height: 58px; border-radius: 19px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--grad-lo), var(--grad-hi));
  box-shadow: var(--press-sm);
  margin-bottom: 20px;
}
.card-ico svg { width: 26px; height: 26px; stroke: var(--accent-deep); stroke-width: 1.9; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { margin: 0; font-size: 14.5px; line-height: 1.65; color: var(--ink-soft); }

/* ============================================================
   FINISHES
   ============================================================ */
.variants { padding: clamp(80px, 11vw, 140px) 20px 0; }
.variant-row {
  max-width: 760px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
}
.variant {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 22px 10px 18px; border: 0; border-radius: 28px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-sm), var(--edge);
  cursor: pointer;
  transition: box-shadow .2s var(--ease-out), transform .18s var(--spring);
}
.variant:hover { transform: translateY(-2px); box-shadow: var(--raise-sm-h), var(--edge); }
.variant:active { transform: translateY(1px) scale(.97); }
.variant[aria-checked='true'] {
  box-shadow: var(--press-md), var(--edge);
  background: linear-gradient(145deg, var(--grad-lo), var(--grad-hi));
}
.variant[aria-checked='true'] .variant-name { color: var(--accent-deep); }
.variant-disc {
  width: 54px; height: 54px; border-radius: 50%;
  box-shadow: var(--raise-xs), var(--edge);
}
.disc-bone  { background: linear-gradient(145deg, #ece8df, #ddd7cb); }
.disc-slate { background: linear-gradient(145deg, #e5e8ef, #d4d9e1); }
.disc-sage  { background: linear-gradient(145deg, #e4e9df, #d3d9cb); }
.disc-blush { background: linear-gradient(145deg, #f0e6e4, #e1d5d2); }
.variant-name { font-size: 15px; font-weight: 800; }
.variant-sub { font-size: 11.5px; font-weight: 700; color: var(--ink-faint); margin-top: -6px; }

/* ============================================================
   SPECS
   ============================================================ */
.specs { padding: clamp(80px, 11vw, 140px) 20px 0; }
.spec-well {
  max-width: 820px; margin: 0 auto;
  border-radius: 34px; padding: clamp(8px, 2vw, 18px);
  background: var(--well);
  box-shadow: var(--press-lg);
}
.spec-list { margin: 0; }
.spec-row {
  display: grid; grid-template-columns: minmax(120px, 200px) 1fr;
  gap: 18px; align-items: baseline;
  padding: 17px clamp(16px, 3vw, 30px);
  border-bottom: 1px solid var(--sh-d-hair);
  box-shadow: 0 1px 0 var(--sh-l-soft);
}
.spec-row:last-child { border-bottom: 0; box-shadow: none; }
.spec-row dt {
  font-size: 11.5px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-faint); text-shadow: 0 1px 0 var(--edge-hi);
}
.spec-row dd { margin: 0; font-size: 15px; font-weight: 600; line-height: 1.55; color: var(--ink); }

/* ============================================================
   PRE-ORDER
   ============================================================ */
.preorder { padding: clamp(80px, 11vw, 140px) 20px 0; }
.preorder-card {
  position: relative;
  max-width: 720px; margin: 0 auto;
  border-radius: 38px; padding: clamp(26px, 4vw, 44px);
  background: linear-gradient(150deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-lg), var(--edge);
}
.preorder-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  margin-bottom: 28px;
}
.preorder-head h2 { margin: 0; font-size: clamp(26px, 3.6vw, 36px); }
.price-well {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 14px 22px; border-radius: 22px;
  background: var(--well); box-shadow: var(--press-md);
}
.price { font-size: 26px; font-weight: 800; color: var(--accent-deep); }
.price-sub { font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); }

.preorder-form { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field-finish { grid-column: 1 / -1; }
.field label, .field-label {
  font-size: 11px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-faint); text-shadow: 0 1px 0 var(--edge-hi); padding-left: 6px;
}
.well-input {
  height: 52px; padding: 0 18px;
  border: 0; border-radius: 16px;
  background: var(--well); color: var(--ink);
  font: inherit; font-weight: 600;
  box-shadow: var(--press-md);
  transition: box-shadow .25s ease;
}
.well-input::placeholder { color: var(--ink-faint); opacity: .75; }
.well-input:focus-visible { outline: none; box-shadow: var(--press-md), 0 0 0 2px var(--accent); }
.finish-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 10px 20px; border: 0; border-radius: 999px;
  background: linear-gradient(145deg, var(--grad-hi), var(--grad-lo));
  box-shadow: var(--raise-xs), var(--edge);
  font-size: 13px; font-weight: 800; color: var(--ink-soft);
  cursor: pointer;
  transition: box-shadow .2s ease, transform .18s var(--spring), color .2s ease;
}
.chip:hover { transform: translateY(-1px); box-shadow: var(--raise-xs-h), var(--edge); }
.chip[aria-checked='true'] {
  box-shadow: var(--press-sm);
  background: var(--well); color: var(--accent-deep);
}
.reserve-btn { grid-column: 1 / -1; justify-content: center; padding: 17px; font-size: 16px; }
.reserve-btn.busy { opacity: .7; pointer-events: none; }
.form-note { grid-column: 1 / -1; margin: 0; text-align: center; font-size: 13px; color: var(--ink-faint); }
.form-note.error { color: #a8503c; }

.preorder-done { text-align: center; padding: 12px 0 4px; }
.preorder-done h3 { font-size: 30px; margin: 16px 0 8px; }
.preorder-done p { margin: 0 auto 22px; max-width: 420px; color: var(--ink-soft); line-height: 1.6; }
.done-led { margin: 0 auto; width: 14px; height: 14px; animation: led-breathe 3.6s ease-in-out infinite; }
.ref { font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }

/* ============================================================
   FOOTER
   ============================================================ */
.foot {
  max-width: 720px; margin: 0 auto; text-align: center;
  padding: clamp(70px, 10vw, 120px) 20px 60px;
}
.foot-mark { font-size: 26px; }
.foot-note { margin: 18px 0 22px; font-size: 13.5px; line-height: 1.7; color: var(--ink-faint); }
.foot-links { display: flex; justify-content: center; gap: 8px; }

/* ============================================================
   REVEAL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); }
.reveal.in {
  opacity: 1; transform: none;
  transition: opacity .8s var(--ease-out), transform .8s var(--spring);
}

/* ============================================================
   RESPONSIVE — restack, never shrink
   ============================================================ */
@media (max-width: 900px) {
  .slab-grid { grid-template-columns: 1fr; gap: 34px; }
  .dial-frame { width: min(300px, 74vw); }
  .controls-col { max-width: 480px; margin: 0 auto; width: 100%; }
  .toggle-row { justify-content: center; gap: clamp(20px, 6vw, 44px); }
  .nav-links { display: none; }
  .nav-inner { height: 62px; }
}
@media (max-width: 620px) {
  .preset-row { grid-template-columns: 1fr 1fr; }
  .variant-row { grid-template-columns: 1fr 1fr; }
  .preorder-form { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 4px; padding: 15px clamp(14px, 4vw, 22px); }
  .slab { border-radius: 34px; }
  .slab::before { border-radius: 24px; }
  .hero { padding-top: 56px; }
  .scroll-cue { margin-top: 40px; }
  .foot-etch { display: none; }
  .slab-foot { justify-content: center; }
}
@media (max-width: 380px) {
  .preset-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .toggle-row { gap: 12px; }
  .toggle { width: 86px; height: 50px; }
  .toggle-puck { width: 36px; height: 36px; }
  .toggle[aria-checked='true'] .toggle-puck { transform: translateX(36px); }
  .toggle[aria-checked='true']:active .toggle-puck { transform: translateX(36px) scale(.92); }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .15s !important;
  }
  .led.breathing, .halo-dot, .done-led { animation: none; }
  .reveal { opacity: 1; transform: none; }
}