/* ============================================================
   Strivetech AI — Base layer
   Element defaults built on the tokens. Opt-in: consumers get
   sensible dark-canvas defaults the moment they link styles.css.
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  font-weight: var(--fw-regular);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-optical-sizing: auto;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--text-heading);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

a { color: var(--link); text-decoration: none; transition: color var(--dur-fast) var(--ease-standard); }
a:hover { color: var(--link-hover); }

/* The brand's signature serif-display treatment */
.display {
  font-family: var(--font-display);
  font-weight: var(--fw-regular);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
  color: var(--text-heading);
}
.display em, .serif-italic {
  font-style: italic;
  color: var(--accent);
}

/* Mono eyebrow — the "// LABEL" device used throughout the brand */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--text-eyebrow);
}

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

:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--radius-xs); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--ink-200); border-radius: var(--radius-pill); border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-300); }