/* autorestage.com — the public site.
 *
 * Every value here comes from DESIGN.md. Reference a token, never a literal;
 * if a value is missing from the tokens below, it belongs in DESIGN.md first.
 *
 * The posture: the product IS car photography, so the photographs carry the
 * page and the chrome steps out of the way. Near-black floor, one warm accent
 * borrowed from the lighting in the studio sets we generate, zero-radius CTAs
 * because a rectangle reads engineered and a pill reads consumer-tech.
 *
 * No framework and no build step. The whole page is four files. */

:root {
  color-scheme: dark;

  /* ── colour ─────────────────────────────────────────────────────── */
  --canvas:    oklch(6.5% 0.004 265);
  --surface-1: oklch(10.5% 0.006 265);
  --surface-2: oklch(15% 0.008 265);
  --hairline:  oklch(24% 0.008 265);
  --ink:       oklch(96% 0.004 90);
  --ink-dim:   oklch(72% 0.008 265);
  --ink-mute:  oklch(55% 0.01 265);
  --accent:    oklch(78% 0.16 78);

  /* ── type ───────────────────────────────────────────────────────── */
  --serif: 'Instrument Serif', ui-serif, Georgia, serif;
  --sans:  'Geist', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono:  'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --display-xl: clamp(3rem, 1.1rem + 7.6vw, 7.5rem);
  --display-lg: clamp(1.9rem, 1rem + 3.1vw, 3.4rem);
  --title:      clamp(1.05rem, .95rem + .35vw, 1.25rem);
  --lede:       clamp(1.02rem, .96rem + .35vw, 1.2rem);
  --body:       clamp(1rem, .96rem + .2vw, 1.09rem);

  /* ── space: base 4px, every value a multiple ────────────────────── */
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px;
  --s5: 20px; --s6: 28px; --s7: 40px; --s8: 64px; --s9: 96px;
  --gut: clamp(1.25rem, .6rem + 2.6vw, 4.5rem);
  --section: clamp(4.5rem, 2.6rem + 7vw, 11rem);

  /* ── shape ──────────────────────────────────────────────────────── */
  --r-none: 0px;
  --r-xl:   14px;
  --r-full: 9999px;

  /* ── motion: shared with the console, and not per-component ─────── */
  --ease-out:    cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --press:  120ms;
  --fast:   160ms;
  --normal: 220ms;
  --slow:   320ms;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: var(--body)/1.62 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Two soft washes so the black reads as a room rather than a void. Fixed and
   non-interactive: this is atmosphere, not an element. */
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(120% 70% at 62% -10%, oklch(30% 0.03 78 / .42), transparent 62%),
    radial-gradient(90% 60% at 10% 108%, oklch(24% 0.02 250 / .34), transparent 64%);
}

main, header, footer { position: relative; z-index: 1; }

h1, h2 {
  font-family: var(--serif);
  font-weight: 400;          /* never bold the serif -- its own contrast does that */
  letter-spacing: -0.015em;
}
h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; }

a { color: inherit; }

.skip {
  position: absolute; left: -9999px; top: 0; padding: var(--s3) var(--s5);
  background: var(--ink); color: var(--canvas); z-index: 99;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ── header ─────────────────────────────────────────────────────────── */

.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s6); padding: var(--s6) var(--gut) var(--s5);
}
.mark { font-family: var(--serif); font-size: 1.3rem; text-decoration: none; }
.mark span { color: var(--ink-mute); }
.top nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.top nav a {
  font-size: .875rem; color: var(--ink-dim); text-decoration: none;
  transition: color var(--fast) var(--ease-out);
}
.top nav a:hover { color: var(--ink); }
.cta-sm {
  border: 1px solid var(--hairline); padding: var(--s2) var(--s4);
  transition: border-color var(--normal) var(--ease-out),
              background var(--normal) var(--ease-out),
              color var(--normal) var(--ease-out);
}
.cta-sm:hover { border-color: var(--ink); background: var(--ink); color: var(--canvas) !important; }
.cta-sm:active { transform: scale(0.97); }

@media (max-width: 560px) { .top nav a:not(.cta-sm) { display: none; } }

/* ── hero ───────────────────────────────────────────────────────────── */

.hero {
  display: grid; align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
  gap: clamp(2rem, 4vw, 5rem);
  padding: clamp(2rem, 1rem + 4vw, 6rem) var(--gut) var(--section);
}
@media (max-width: 880px) { .hero { grid-template-columns: 1fr; } }

/* The one place the site uses uppercase. 0.16em tracking is what makes a small
   caps label read machined rather than shouted -- under that it just looks
   like shrunken body copy. */
.eyebrow {
  margin: 0 0 var(--s5);
  font-size: .74rem; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-mute);
}

h1 { margin: 0 0 var(--s6); font-size: var(--display-xl); line-height: .92; }
h1 em { font-style: italic; color: var(--accent); }

.lede { margin: 0 0 var(--s7); max-width: 34ch; font-size: var(--lede); color: var(--ink-dim); }

.actions { display: flex; flex-wrap: wrap; gap: var(--s3); margin-bottom: var(--s6); }

/* Zero radius: the rectangle IS the posture. White fill, never the accent --
   a coloured CTA competes with the cars, which are the actual subject. */
.btn {
  display: inline-block; padding: var(--s3) var(--s6);
  border: 1px solid var(--ink); border-radius: var(--r-none);
  background: var(--ink); color: var(--canvas);
  font-family: var(--sans); font-weight: 600; font-size: .95rem;
  text-decoration: none;
  transition: transform var(--fast) var(--ease-out),
              background var(--fast) var(--ease-out),
              border-color var(--fast) var(--ease-out);
}
.btn:hover { transform: translateY(-2px); background: var(--accent); border-color: var(--accent); }
.btn:active { transform: scale(0.97); }

.btn.ghost { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn.ghost:hover { background: transparent; color: var(--ink); border-color: var(--ink); transform: translateY(-2px); }

.fineprint { margin: 0; font-size: .82rem; color: var(--ink-mute); }

.hero-fig { margin: 0; }
.hero-fig img {
  width: 100%; height: auto; display: block;
  border-radius: var(--r-xl);
  box-shadow: 0 30px 80px -30px oklch(0% 0 0 / .9), 0 0 0 1px var(--hairline);
}
.hero-fig figcaption {
  margin-top: var(--s4); font-size: .8rem; color: var(--ink-mute); max-width: 42ch;
}

/* ── section furniture ──────────────────────────────────────────────── */

.sec-head { max-width: 62ch; margin: 0 auto clamp(2rem, 4vw, 3.5rem); text-align: center; }
.sec-head h2 { margin: 0 0 var(--s4); font-size: var(--display-lg); line-height: 1.06; }
.sec-sub { margin: 0; color: var(--ink-dim); font-size: .97rem; }

.work, .does, .api, .end { padding: 0 var(--gut) var(--section); }

/* ── before / after ─────────────────────────────────────────────────── */

.ba {
  position: relative; max-width: 1040px; margin: 0 auto; aspect-ratio: 16 / 9;
  border-radius: var(--r-xl); overflow: hidden;
  box-shadow: 0 0 0 1px var(--hairline);
  --pos: 50%;
  touch-action: pan-y;
}
.ba-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.ba-clip { position: absolute; inset: 0; clip-path: inset(0 0 0 var(--pos)); }
.ba-bar {
  position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px;
  background: oklch(96% 0 0 / .9); pointer-events: none;
}
.ba-grip {
  position: absolute; top: 50%; left: 50%; translate: -50% -50%;
  width: 42px; height: 42px; border-radius: var(--r-full);
  background: oklch(96% 0 0 / .95);
  box-shadow: 0 4px 18px oklch(0% 0 0 / .5);
}
.ba-grip::before, .ba-grip::after {
  content: ''; position: absolute; top: 50%; translate: 0 -50%; border: 5px solid transparent;
}
.ba-grip::before { left: var(--s2);  border-right-color: var(--canvas); }
.ba-grip::after  { right: var(--s2); border-left-color:  var(--canvas); }

/* The range IS the control -- invisible, full-bleed, and therefore keyboard,
   touch and screen-reader native. Painting a div and bolting ARIA onto it
   reimplements, badly, what this already does. */
.ba-range {
  position: absolute; inset: 0; width: 100%; height: 100%; margin: 0;
  opacity: 0; cursor: ew-resize; appearance: none; background: transparent;
}
.ba-range::-webkit-slider-thumb { appearance: none; width: 46px; height: 100%; }
.ba-range::-moz-range-thumb { width: 46px; height: 100%; border: 0; }
.ba-range:focus-visible ~ .ba-bar { box-shadow: 0 0 0 2px var(--accent); }

.ba-tag {
  position: absolute; bottom: var(--s4); padding: var(--s1) var(--s3);
  border-radius: var(--r-full);
  font-size: .7rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase;
  background: oklch(10% 0 0 / .62); backdrop-filter: blur(6px);
  color: var(--ink); pointer-events: none;
}
.ba-tag-l { left: var(--s4); }
.ba-tag-r { right: var(--s4); }

/* ── bento ──────────────────────────────────────────────────────────── */

.bento {
  display: grid; gap: var(--s4); max-width: 1140px; margin: 0 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
@media (max-width: 900px) { .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 580px) { .bento { grid-template-columns: 1fr; } }

.cell {
  background: linear-gradient(170deg, var(--surface-2), var(--surface-1));
  border: 1px solid var(--hairline); border-radius: var(--r-xl);
  padding: clamp(20px, 2.2vw, 30px);
  transition: border-color var(--normal) var(--ease-out),
              transform var(--normal) var(--ease-out);
}
.cell:hover { border-color: oklch(36% 0.01 265); transform: translateY(-3px); }
.cell h3 { margin: 0 0 var(--s3); font-size: var(--title); }
.cell p { margin: 0; color: var(--ink-dim); font-size: .94rem; }

/* Two columns AND two rows: spanning only columns left a tall image beside one
   short card and a column of dead black under it. */
.cell.wide {
  grid-column: span 2; grid-row: span 2;
  display: grid; grid-template-rows: auto auto 1fr; gap: var(--s5); align-content: start;
}
.cell.wide img {
  width: 100%; height: 100%; object-fit: cover; display: block; min-height: 0;
  border-radius: 9px; box-shadow: 0 0 0 1px var(--hairline);
}
@media (max-width: 900px) { .cell.wide { grid-row: span 1; } }
@media (max-width: 580px) { .cell.wide { grid-column: span 1; } }

/* ── api ────────────────────────────────────────────────────────────── */

.api {
  display: grid; gap: clamp(2rem, 4vw, 4rem); align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  max-width: 1140px; margin: 0 auto;
}
@media (max-width: 900px) { .api { grid-template-columns: 1fr; } }

.api h2 { margin: 0 0 var(--s4); font-size: var(--display-lg); line-height: 1.08; }
.api-copy p { color: var(--ink-dim); max-width: 46ch; }

.ticks { list-style: none; margin: var(--s5) 0 0; padding: 0; }
.ticks li {
  position: relative; padding-left: var(--s6); margin-bottom: var(--s2);
  color: var(--ink-dim); font-size: .93rem;
}
.ticks li::before {
  content: ''; position: absolute; left: var(--s1); top: .62em;
  width: 9px; height: 5px;
  border-left: 1.6px solid var(--accent); border-bottom: 1.6px solid var(--accent);
  rotate: -45deg;
}

.code {
  margin: 0; padding: clamp(18px, 2vw, 26px); overflow-x: auto;
  background: var(--surface-1); border: 1px solid var(--hairline);
  border-radius: var(--r-xl);
  font: .84rem/1.75 var(--mono); color: var(--ink-dim);
  white-space: pre; tab-size: 2;
}
.code .c { color: var(--ink-mute); }
.code .s { color: var(--accent); }

/* ── end ────────────────────────────────────────────────────────────── */

.end { text-align: center; }
.end h2 { margin: 0 0 var(--s3); font-size: var(--display-lg); }
.end p { margin: 0 0 var(--s6); color: var(--ink-dim); }

.foot {
  display: flex; flex-wrap: wrap; gap: var(--s3) var(--s6);
  align-items: baseline; justify-content: space-between;
  padding: var(--s6) var(--gut); border-top: 1px solid var(--hairline);
  font-size: .84rem; color: var(--ink-mute);
}
.foot p { margin: 0; }
.foot .mark { font-size: 1rem; }

/* ── motion off ─────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
  .btn:hover, .btn.ghost:hover, .cell:hover { transform: none; }
}