/* ============================================================
   EAJ · Base / reset / utilidades
   ============================================================ */

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

html { scroll-behavior: smooth; }
html:focus-within { scroll-behavior: auto; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-texto);
  background: var(--color-fondo);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0 0 var(--sp-4);
  font-weight: 700;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p { margin: 0 0 var(--sp-4); }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-primario); }

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

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

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

/* --- Utilidades de layout --- */
.contenedor {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

.seccion {
  padding-block: var(--sp-24);
  position: relative;
}

.seccion--oscura {
  background: var(--negro-teatral);
  color: var(--blanco-escenico);
}

.seccion--clara {
  background: var(--blanco-escenico);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primario);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
  display: inline-block;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--color-texto-sec);
  max-width: var(--maxw-lectura);
}

.seccion--oscura .lead { color: rgba(245, 240, 232, 0.78); }

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-body);
  border-radius: var(--radio);
  transition: transform var(--duracion-rapida) var(--ease-teatro),
              background var(--duracion-rapida) ease,
              color var(--duracion-rapida) ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn--primario {
  background: var(--rojo-rosa);
  color: var(--blanco-escenico);
}
.btn--primario:hover { background: #a30c25; color: var(--blanco-escenico); }

.btn--secundario {
  background: transparent;
  color: inherit;
  border: 2px solid currentColor;
}
.btn--secundario:hover { color: var(--rojo-rosa); border-color: var(--rojo-rosa); }

.btn--oscuro {
  background: var(--negro-teatral);
  color: var(--blanco-escenico);
}
.btn--oscuro:hover { background: var(--gris-carbon); color: var(--blanco-escenico); }

/* --- Accesibilidad --- */
.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;
}

:focus-visible {
  outline: 3px solid var(--rojo-rosa);
  outline-offset: 3px;
}

/* --- Scroll reveal (controlado por main.js) --- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity var(--duracion-lenta) var(--ease-teatro),
              transform var(--duracion-lenta) var(--ease-teatro);
  will-change: opacity, transform;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal--spotlight {
  filter: brightness(0.35);
  transition: opacity var(--duracion-lenta) var(--ease-teatro),
              transform var(--duracion-lenta) var(--ease-teatro),
              filter var(--duracion-lenta) ease;
}
.reveal--spotlight.visible {
  filter: brightness(1);
}

/* Prefers reduced motion: desactivar todo */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal, .reveal--spotlight {
    opacity: 1 !important; transform: none !important; filter: none !important;
  }
}