/* ==========================================================================
   Base — reset, document rhythm, layout primitives, accessibility helpers
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

body {
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--paper);
  background: var(--void);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100dvh;
}

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }

/* Components below set `display` on classes, which outranks the user-agent
   `[hidden] { display: none }` rule. Make the attribute authoritative so
   toggling `el.hidden` always works. */
[hidden] { display: none !important; }

input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

a {
  color: var(--gold);
  text-decoration-color: color-mix(in srgb, var(--gold) 38%, transparent);
  text-underline-offset: 0.22em;
  transition: color var(--dur-1) var(--ease-out);
}
a:hover { color: var(--gold-lit); text-decoration-color: currentColor; }

h1, h2, h3, h4 { line-height: 1.06; font-weight: 600; letter-spacing: -0.028em; text-wrap: balance; }
h1 { font-size: var(--step-6); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }
p  { text-wrap: pretty; }

ul, ol { padding-left: 1.15em; }

::selection { background: var(--gold); color: var(--on-gold); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: var(--r-sm); }

/* --- Scrollbar: a hairline, like the rest of the drawing ------------------ */
@supports selector(::-webkit-scrollbar) {
  ::-webkit-scrollbar { width: 9px; height: 9px; }
  ::-webkit-scrollbar-track { background: var(--ink); }
  ::-webkit-scrollbar-thumb { background: var(--gold-deep); border: 3px solid var(--ink); border-radius: var(--r-pill); }
  ::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }
}
html { scrollbar-color: var(--gold-deep) var(--ink); scrollbar-width: thin; }

/* --- Layout primitives ---------------------------------------------------- */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.container--wide { width: min(100% - 2.5rem, var(--container-wide)); }
.container--narrow { width: min(100% - 2.5rem, 720px); }

.section { padding-block: clamp(5rem, 11vw, 10rem); position: relative; }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--alt { background: var(--ink); }

.grid { display: grid; gap: var(--sp-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

@media (min-width: 1040px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* --- Text utilities -------------------------------------------------------- */
.eyebrow {
  display: inline-flex; align-items: baseline; gap: 0.7em;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow::before { content: "❯"; color: var(--gold-dim); font-size: 0.85em; }

.lede { font-size: var(--step-1); color: var(--paper-2); max-width: 60ch; line-height: 1.55; }
.muted { color: var(--paper-2); }
.mono { font-family: var(--font-mono); }
.gold { color: var(--gold); }

.rule { height: 1px; background: var(--line); border: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: 0; left: 50%; translate: -50% -150%;
  z-index: 400; padding: 0.7rem 1.4rem;
  background: var(--gold); color: var(--on-gold);
  font-weight: 600;
  transition: translate var(--dur-2) var(--ease-out);
}
.skip-link:focus-visible { translate: -50% 0; }

/* --- Reduced motion --------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}