/* ============================================================
   IA Humana — Base layer
   Element defaults + a few brand primitives (glass, eyebrow).
   ============================================================ */

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

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

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-weight: var(--weight-regular);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
  color: var(--text-1);
  text-wrap: balance;
}

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

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

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

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

code, kbd, samp { font-family: var(--font-mono); font-size: 0.92em; }

/* ---- Brand primitives ---- */

/* Frosted glass surface */
.ia-glass {
  background: var(--glass-bg);
  border: var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-highlight);
}

/* Mono eyebrow / kicker */
.ia-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--accent);
}

/* Subtle dotted/grid backdrop used on dark sections */
.ia-grid-bg {
  background-image: radial-gradient(rgba(240, 240, 240, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
}