/* Reset ligero + escenario del hero */

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

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

body {
  margin: 0;
  padding: clamp(6px, 0.7vw, 12px);
  background: var(--color-page);
  color: var(--color-cream);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
p,
figure,
ul,
ol,
dl,
dd {
  margin: 0;
}

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

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

/* Los atributos width/height del HTML reservan espacio y evitan CLS, pero no
   deben mandar sobre el ancho de CSS: sin esto la imagen sale deformada. */
img {
  height: auto;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

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

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Salto al contenido: primer tabulador de la pagina */
.skip-link {
  position: absolute;
  z-index: 20;
  top: var(--space-4);
  left: var(--space-4);
  padding: 0.7em 1.3em;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-size: var(--text-sm);
  font-weight: 800;
  transform: translate3d(0, -180%, 0);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.skip-link:focus-visible {
  transform: none;
}

/* --- El escenario: tarjeta redondeada con el cielo de marca --- */
.stage {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--radius-stage);
  background:
    radial-gradient(118% 80% at 50% 2%, oklch(46% 0.16 258 / 0.92) 0%, transparent 60%),
    linear-gradient(
      180deg,
      var(--color-sky-top) 0%,
      var(--color-sky-mid) 54%,
      var(--color-sky-bottom) 100%
    );
}

.stage--full {
  min-height: calc(100svh - clamp(12px, 1.4vw, 24px));
}

/* Grano sutil: da atmosfera y mata el banding del degradado */
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  opacity: 0.28;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

.stage__layout {
  position: relative;
  z-index: 3;
  display: grid;
  /* minmax(0, 1fr) y no `auto`: una columna auto se dimensiona a max-content y
     el carrusel de tarjetas estiraria toda la pagina fuera del viewport. */
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  min-height: inherit;
  padding: clamp(0.75rem, 0.4rem + 1vw, 1.25rem) var(--gutter) var(--gutter);
}

/* Entrada escalonada. Es una animacion CSS, no una clase que ponga el JS:
   si el script falla, el contenido igual se ve. */
.reveal {
  animation: reveal-in var(--duration-slow) var(--ease-out-expo) both;
  animation-delay: var(--reveal-delay, 0ms);
}

@keyframes reveal-in {
  from {
    opacity: 0;
    transform: translate3d(0, 18px, 0);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Aparicion al hacer scroll (secciones bajo el hero). Sin JS quedan visibles:
   la clase `is-in` la pone el observer, y `no-js` nunca la necesita. */
.rise {
  opacity: 1;
}

.js .rise {
  opacity: 0;
  transform: translate3d(0, 26px, 0);
  transition:
    opacity var(--duration-slow) var(--ease-out-expo),
    transform var(--duration-slow) var(--ease-out-expo);
  transition-delay: var(--rise-delay, 0ms);
}

.js .rise.is-in {
  opacity: 1;
  transform: none;
}

@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;
  }

  .reveal {
    animation: none;
  }

  .js .rise {
    opacity: 1;
    transform: none;
  }
}