/* ==========================================================================
   SURESTIA — Base / Reset / Tipografía
   ========================================================================== */

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

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

@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;
    scroll-behavior: auto !important;
  }
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy-900);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-4);
  font-weight: 600;
}

h1 { font-size: var(--fs-3xl); font-weight: 700; }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }

p { margin: 0 0 var(--space-4); color: var(--color-text-body); }

a {
  color: var(--color-navy-700);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-gold-700); }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; }

input, textarea, select {
  font-family: inherit;
  font-size: var(--fs-base);
}

/* Foco visible accesible en toda la navegación por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--color-gold-500);
  color: var(--color-navy-950);
}

/* Utilidad accesible: oculta visualmente pero deja disponible a lectores de pantalla */
.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;
}

.skip-link {
  position: absolute;
  left: 0; top: -60px;
  background: var(--color-navy-900);
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  z-index: 1000;
  transition: top var(--transition-fast);
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { top: 0; color: var(--color-white); }