/* ============================================================
   base.css — reset, typography, layout utilities
   Royal Marble — Neo-Brutalist Trust Ledger
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Photocopy grain overlay — subtle, brutalist */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.045;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}

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

a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); text-decoration-thickness: 2px; }
a:focus-visible { outline: var(--focus); outline-offset: var(--focus-offset); }

button { font: inherit; cursor: pointer; }
button:focus-visible, [tabindex]:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: var(--focus);
  outline-offset: var(--focus-offset);
  box-shadow: var(--focus-ring);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400; /* Archivo Black is single weight */
  line-height: var(--lh-tight);
  letter-spacing: var(--track-tight);
  margin: 0;
  text-wrap: balance;
}
p { margin: 0 0 var(--s-4) 0; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 var(--s-4) 0; padding-left: 1.1em; }
li + li { margin-top: var(--s-1); }

strong, b { font-weight: 700; }
em { font-style: italic; }

/* ---------- Layout utilities ---------- */
.container { width: var(--maxw); margin: 0 auto; }
.container-wide { width: var(--maxw-wide); margin: 0 auto; }

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 82vh;
  border-bottom: 2px solid var(--border);
}
.split-section > .pane {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(var(--s-6), 4vw, var(--s-9));
  min-width: 0;
}
.split-section > .pane.media { padding: 0; position: relative; overflow: hidden; }
.split-section > .pane.media img {
  width: 100%; height: 100%; object-fit: cover; min-height: 82vh;
  filter: grayscale(0.55) contrast(1.18) brightness(0.92);
}
/* Alternator: even sections flip media to the right via order in pages/components */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10000;
  background: var(--ink);
  color: var(--on-ink);
  padding: var(--s-3) var(--s-5);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  text-decoration: none;
  border: 2px solid var(--ink);
}
.skip-link:focus { left: var(--s-3); top: var(--s-3); }

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

/* ---------- Section labels / stamps ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink);
  display: inline-block;
  border: 2px solid var(--ink);
  padding: 4px 10px;
  background: var(--surface-raise);
  margin-bottom: var(--s-5);
}

.lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--text); max-width: 52ch; }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--dur) steps(3,end), transform var(--dur) steps(3,end); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .split-section { grid-template-columns: 1fr; min-height: auto; }
  .split-section > .pane { min-height: auto; padding: var(--s-6) var(--s-5); }
  .split-section > .pane.media { min-height: 50vh; order: -1 !important; }
  .split-section > .pane.media img { min-height: 50vh; }
}