/* Reset y estilos base */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@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;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

p {
  max-width: 70ch;
  color: var(--text-secondary);
}

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

@media (min-width: 1280px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (min-width: 1536px) {
  .container {
    padding-inline: var(--space-10);
  }
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

/* Secciones */
.section {
  position: relative;
  padding-block: clamp(3.5rem, 8vw, 7rem);
  overflow: hidden;
}

.section-white { background: var(--color-white); }
.section-foam { background: var(--color-foam); }
.section-bone { background: var(--color-bone); }
.section-sky { background: var(--color-sky-soft); }
.section-warm { background: var(--color-bone); }
.section-accent { background: var(--color-sky-soft); }

/* Utilidades tipográficas */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 2px;
  background: var(--color-sky);
}

.text-balance {
  text-wrap: balance;
}

/* Visuales comunes */
.card {
  background: var(--surface);
  border: var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* Tarjeta premium compartida: profundidad en dos capas + hover con elevación.
   Solo transform / box-shadow / border-color para no recalcular layout. */
.card-3d {
  background: var(--surface);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition:
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
  will-change: transform;
}

.card-3d:hover,
.card-3d:focus-within {
  transform: translateY(-4px) scale(1.008);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-sky);
}

/* Firma visual: línea de recorrido */
.route {
  display: flex;
  align-items: center;
  height: 12px;
  margin-top: var(--space-4);
}

.route__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 2px solid var(--color-sky);
  background: var(--color-white);
  flex: none;
}

.route__dot--fill {
  background: var(--color-sky);
}

.route__seg {
  height: 2px;
  background: var(--color-sky);
  width: 54px;
  flex: none;
}

.route__seg--dash {
  background: repeating-linear-gradient(90deg, var(--color-mist) 0 6px, transparent 6px 12px);
  width: 38px;
}

.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-pearl), transparent);
  border: none;
}

.divider-left {
  width: 4rem;
  height: 2px;
  background: var(--color-sky);
  border: none;
  margin-block: var(--space-4);
}

/* Imágenes */
.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame {
  padding: var(--space-2);
  background: var(--color-white);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

/* Foco visible */
:focus-visible {
  outline: 2px solid var(--color-dark);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-dark);
  color: var(--color-white);
  z-index: 9999;
  border-radius: var(--radius-md);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Helpers */
.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;
}

/* Detalles decorativos */
.dot-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image: radial-gradient(var(--color-sky) 1px, transparent 1px);
  background-size: 24px 24px;
}

.line-accent {
  position: absolute;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-sky), transparent);
  opacity: 0.25;
  pointer-events: none;
}

.glass-card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

/* Scrollbar refinada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bone);
}

::-webkit-scrollbar-thumb {
  background: var(--color-mist);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-dark);
}

/* ===== Grano anti-banding (ronda 16) =====
   Dither de 1px a opacidad bajísima sobre las secciones con rampas
   largas de degradé: a simple vista no se ve, pero rompe los escalones
   de color en pantallas grandes. Va como ::after del propio fondo,
   bajo cualquier contenido posicionado con z-index. */
.hero::after,
.anden::after,
.page-hero--marea::after,
.revista-noche::after,
.stats-editorial::after,
#nosotros::after,
#objetivos::after,
#comision-directiva::after,
#empresas-asociadas::after,
.section-accent::after,
.ediciones::after,
.section--library::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.05) 0.5px, transparent 0.6px),
    radial-gradient(rgba(36, 49, 58, 0.05) 0.5px, transparent 0.6px);
  background-size: 3px 3px, 5px 5px;
  background-position: 0 0, 1px 2px;
}

/* ===== Ronda 21: feedback táctil propio, sin flash nativo de WebKit ===== */
a,
button,
[role="button"],
input,
select,
label,
summary {
  -webkit-tap-highlight-color: transparent;
}

/* Ronda 24.3: antialiasing coherente sobre fondos claros */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}