/* ==========================================================================
   NominaHQ — Base: reset, typography, layout, motion, i18n visibility
   ========================================================================== */

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

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

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

img, picture, svg { display: block; max-width: 100%; }
a { color: var(--text-link); text-decoration: none; }

h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); }
p  { max-width: 68ch; }

/* ---- Layout primitives ---- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding-inline: var(--space-6); }
.section { padding-block: var(--space-20); }
.section--tight { padding-block: var(--space-12); }
.bg-secondary { background: var(--surface-secondary); }
.bg-tertiary  { background: var(--surface-tertiary); }
.bg-blue-soft { background: var(--nomina-blue-50); }
.bg-dark { background: var(--surface-dark); color: var(--text-inverse); }

.eyebrow {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--nomina-blue);
  margin-bottom: var(--space-4);
}
.section-head { max-width: 720px; margin-bottom: var(--space-12); }
.section-head h2 { margin-bottom: var(--space-4); }
.section-head p { font-size: var(--text-lg); color: var(--text-tertiary); }
.lead { font-size: var(--text-lg); color: var(--text-secondary); }

.grid { display: grid; gap: var(--space-6); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (min-width: 1024px) {
  h1 { font-size: var(--text-5xl); }
  h2 { font-size: var(--text-4xl); }
  .section { padding-block: var(--space-32); }
  .section--tight { padding-block: var(--space-16); }
}

@media (max-width: 1023px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* ---- Skip link / a11y ---- */
.skip-link {
  position: absolute; left: -999px; top: var(--space-2);
  background: var(--nomina-blue); color: #fff; padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md); z-index: 200;
}
.skip-link:focus { left: var(--space-2); }
:focus-visible { outline: 2px solid var(--nomina-blue); outline-offset: 2px; }

/* ---- Bilingual visibility (default Spanish) ---- */
html[lang="es"] .lang-en { display: none !important; }
html[lang="en"] .lang-es { display: none !important; }

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 600ms var(--ease-out-expo), transform 600ms var(--ease-out-expo);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-stagger > * {
  opacity: 0; transform: translateY(16px);
  transition: opacity 400ms var(--ease-out-expo), transform 400ms var(--ease-out-expo);
}
.reveal-stagger.visible > * { opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(1){ transition-delay: 0ms; }
.reveal-stagger.visible > *:nth-child(2){ transition-delay: 80ms; }
.reveal-stagger.visible > *:nth-child(3){ transition-delay: 160ms; }
.reveal-stagger.visible > *:nth-child(4){ transition-delay: 240ms; }
.reveal-stagger.visible > *:nth-child(5){ transition-delay: 320ms; }
.reveal-stagger.visible > *:nth-child(6){ transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
}