/* ============================================================
   css/base.css
   Reset, tipografia base, utilidades y accesibilidad.
   ============================================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

ul, ol {
  list-style: none;
}

a {
  color: var(--navy-700);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover {
  color: var(--gold-dark);
}

/* Foco visible (accesibilidad) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.18;
  color: var(--navy-900);
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.45rem); }

p { margin-bottom: 1rem; }

strong { font-weight: 600; }

address { font-style: normal; }

/* Iconos (sprite) */
.icon {
  width: 1.1em;
  height: 1.1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

/* ---------- Enlace para saltar al contenido ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 200;
  padding: .75rem 1.25rem;
  background: var(--navy-800);
  color: var(--white);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
  color: var(--white);
}

/* ---------- Utilidades ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.text-center { text-align: center; }

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

/* Textura de puntos (sello de pasaporte) */
.dot-pattern {
  background-image: radial-gradient(rgba(255,255,255,.16) 1.4px, transparent 1.4px);
  background-size: 22px 22px;
}

.dot-pattern--dark {
  background-image: radial-gradient(rgba(11, 44, 73, .12) 1.4px, transparent 1.4px);
  background-size: 22px 22px;
}

/* Lineas de vuelo (elemento distintivo) */
.flight-lines {
  position: relative;
  pointer-events: none;
}

/* Scroll reveal — contenido visible siempre; animacion solo con JS */
.reveal {
  opacity: 1;
  transform: none;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(var(--reveal-y, 20px)) scale(.985);
  transition: opacity .5s ease, transform .5s ease;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Accesibilidad / tipografia ---------- */
@media (min-width: 60rem) {
  body { font-size: 1.125rem; }
}