/* ============================================================
   Apertool AI — Base: reset, typography, layout primitives
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

h1, h2, h3 { color: var(--ink-2); line-height: var(--lh-snug); letter-spacing: var(--tracking-tight); font-weight: 600; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p { color: var(--muted); }

/* ---- Layout primitives ---- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--space-5); }
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: var(--section-y); }
.section--wash { background: var(--bg-2); }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: var(--space-3);
}

.section__head { max-width: 64ch; margin-bottom: var(--space-7); }
.section__head--center { margin-inline: auto; text-align: center; }
.lead { font-size: var(--fs-lead); color: var(--muted); line-height: var(--lh-snug); }

.gradient-text {
  background: linear-gradient(115deg, var(--accent-strong) 0%, var(--accent) 48%, var(--coral) 108%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--accent-strong); /* fallback */
}

/* ---- Accessibility helpers ---- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--space-4); top: -3rem;
  background: var(--accent-strong); color: #fff;
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
  z-index: 1000; transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus { top: var(--space-4); text-decoration: none; }

:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Honeypot field — visually & semantically hidden from humans */
.hp-field {
  position: absolute !important;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}