/* ============================================================
   iBBricks · Base / reset / utilities
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 12px);
}

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

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  color: var(--text-strong);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 0.4em;
  font-weight: var(--fw-bold);
}

p { margin: 0 0 1em; }

a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg, video { max-width: 100%; display: block; }

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

ul { margin: 0; }

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

::selection { background: var(--blue-200); color: var(--ink); }

/* ─── Layout helpers ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section { padding-block: var(--space-10); }

.eyebrow {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ─── Brick studs accent ──────────────────────────────────────── */
.brick-studs {
  display: inline-flex;
  gap: 3px;
}
.brick-studs > i {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor; opacity: 0.6; display: block;
}

/* ─── Stud-grid backdrop (hero / contact / CTA) ───────────────── */
.stud-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, var(--neutral-200) 1px, transparent 0);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 40%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 40%, transparent 75%);
  opacity: 0.7;
  pointer-events: none;
}

/* ─── Accessibility ───────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--blue-600);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-md) 0;
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
}
.skip-link:focus { left: 0; text-decoration: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Fade-in on scroll ───────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.fade-in.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in { opacity: 1; transform: none; }
}