/* ============================================================
   423 Foundations — Base layer
   Lightweight, opt-in element defaults. Kept minimal so it can
   sit under product CSS without fighting it. Components style
   themselves; this just sets sane document-level defaults and
   a few reusable type-style helper classes.
   ============================================================ */

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-base);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Tabular figures for any data context */
.ds-tnum { font-feature-settings: "tnum" 1; font-variant-numeric: tabular-nums; }

/* ---- Type-style helpers ------------------------------------ */
.ds-display {
  font-family: var(--font-brand);
  font-weight: var(--weight-medium);
  font-size: var(--text-8xl);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tightest);
}
.ds-h1 {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
}
.ds-h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
}
.ds-h3 {
  font-family: var(--font-heading);
  font-weight: var(--weight-semibold);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}
.ds-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}
.ds-body-sm {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}
.ds-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
}
.ds-overline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}
.ds-mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}