/* ============================================================
   BASE — Drum Sheet Store
   Light foundational element styles. Applies the type system,
   canvas background and sensible resets so specimens/components
   render correctly. Kept deliberately un-opinionated.
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  font-weight: var(--font-weight-regular);
  font-feature-settings: var(--font-features);
  color: var(--text-primary);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Headings: weight 600, tightened tracking scales with size.
   (Reset margins — layout owns spacing.) */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-heading);
}
h1 { font-size: var(--text-display);    line-height: var(--leading-display);    letter-spacing: var(--tracking-display); }
h2 { font-size: var(--text-heading-lg); line-height: var(--leading-heading-lg); letter-spacing: var(--tracking-heading-lg); }
h3 { font-size: var(--text-heading);    line-height: var(--leading-heading);    letter-spacing: var(--tracking-heading); }
h4 { font-size: var(--text-heading-sm); line-height: var(--leading-heading-sm); letter-spacing: normal; }

p { margin: 0; }

/* Links — monochrome; underline on hover only. */
a {
  color: var(--text-link);
  text-decoration: none;
}
a:hover {
  color: var(--color-onyx);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Monospace helper for technical annotations / tabular numerals */
.ds-mono {
  font-family: var(--font-mono);
  font-feature-settings: "zero";
  font-variant-numeric: tabular-nums;
}

::selection {
  background: var(--color-ink);
  color: var(--color-paper-white);
}