/*
 * Base styles — typography defaults, layout primitives, link behavior.
 * Page-level and component styles compose on top of this.
 */

html {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 100%;
  font-feature-settings: "ss01", "cv02", "cv11";  /* Inter stylistic sets */
  font-variant-numeric: tabular-nums;
}

body {
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-body);
}

/* ---- Headlines (serif, Fraunces, optical-size aware) ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: var(--weight-regular);
  line-height: var(--leading-tight);
  color: var(--color-ink);
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-display);
  font-variation-settings: "opsz" 100, "SOFT" 30;
}

h2 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-headline);
  font-variation-settings: "opsz" 60, "SOFT" 40;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

h3 {
  font-size: var(--text-2xl);
  letter-spacing: var(--tracking-headline);
  font-variation-settings: "opsz" 36, "SOFT" 50;
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: var(--text-xl);
  letter-spacing: 0;
  font-variation-settings: "opsz" 24, "SOFT" 50;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

/* ---- Display utilities (huge numbers, hero text) -------------- */
.display-monument {
  font-family: var(--font-serif);
  font-size: var(--text-monument);
  font-weight: var(--weight-regular);
  line-height: 0.9;
  letter-spacing: var(--tracking-monument);
  font-variation-settings: "opsz" 144, "SOFT" 20;
  font-variant-numeric: tabular-nums lining-nums;
}

.display-hero {
  font-family: var(--font-serif);
  font-size: var(--text-display);
  font-weight: var(--weight-regular);
  line-height: 0.95;
  letter-spacing: var(--tracking-display);
  font-variation-settings: "opsz" 100, "SOFT" 25;
  font-variant-numeric: tabular-nums lining-nums;
}

/* ---- Eyebrow labels ------------------------------------------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}

/* ---- Body text ------------------------------------------------ */
.prose {
  max-width: var(--measure-prose);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink);
}

.prose > * + * {
  margin-top: var(--space-4);
}

.prose p {
  text-wrap: pretty;
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-ink-muted);
  font-weight: var(--weight-regular);
}

.muted {
  color: var(--color-ink-muted);
}

.subtle {
  color: var(--color-ink-subtle);
}

/* ---- Links ---------------------------------------------------- */
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--color-accent-hover);
}

a.unstyled {
  color: inherit;
  text-decoration: none;
}

/* ---- Mono ----------------------------------------------------- */
code,
kbd,
samp,
.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: var(--tracking-mono);
}

code {
  background: var(--color-bg-sunken);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
}

pre {
  background: var(--color-bg-sunken);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

pre code {
  background: transparent;
  padding: 0;
}

/* ---- Rules ---------------------------------------------------- */
hr {
  border: 0;
  border-top: var(--rule-hair);
  margin: var(--space-7) 0;
}

hr.strong {
  border-top: var(--rule-strong);
}

/* ---- Layout containers --------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-page);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: var(--container-narrow); }
.container--text   { max-width: var(--container-text); }
.container--wide   { max-width: var(--container-wide); }

/* ---- Grid (12-col asymmetric) -------------------------------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--space-5);
  row-gap: var(--space-6);
}

/* Common spans — use these instead of arbitrary column math in templates. */
.col-span-12 { grid-column: span 12; }
.col-span-8  { grid-column: span 8; }
.col-span-6  { grid-column: span 6; }
.col-span-5  { grid-column: span 5; }
.col-span-4  { grid-column: span 4; }
.col-span-3  { grid-column: span 3; }

@media (max-width: 768px) {
  .grid-12 > [class*="col-span-"] { grid-column: span 12; }
}

/* ---- Spacing utilities (sparingly) --------------------------- */
.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }
.stack-xl > * + * { margin-top: var(--space-8); }

.section {
  padding-block: clamp(var(--space-8), 10vw, var(--space-11));
}

/* ---- Skip-link (accessibility) ------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-ink);
  color: var(--color-bg);
  padding: var(--space-3) var(--space-4);
  z-index: 1000;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-4);
}