/* ATHENIS — base: reset, tipografía, botones, accesibilidad */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--carbon);
  color: var(--marmol);
  font-family: var(--fuente-texto);
  font-size: var(--t-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }

h1, h2, h3 {
  font-family: var(--fuente-titulo);
  font-weight: 800;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--t-hero); }
h2 { font-size: var(--t-seccion); }
h3 { font-size: 1.05rem; }

p { margin: 0; max-width: 62ch; }

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

button { font: inherit; color: inherit; }

/* Foco visible en todo elemento interactivo */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--dorado);
  outline-offset: 3px;
  border-radius: 2px;
}

.salta-al-contenido {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  z-index: 200;
  background: var(--dorado);
  color: var(--carbon);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  border-radius: var(--radio);
  clip-path: inset(50%);
  pointer-events: none;
}
.salta-al-contenido:focus {
  clip-path: none;
  pointer-events: auto;
}

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

/* ---- Estructura ---- */

.seccion { padding: var(--sec-y) var(--gutter); }
.contenedor { max-width: var(--ancho); margin: 0 auto; }

.seccion--oscura {
  background: var(--carbon);
  color: var(--marmol);
  border-top: 1px solid var(--linea-oscura);
}
.seccion--clara {
  background: var(--marmol);
  color: var(--carbon);
  border-top: 1px solid var(--linea-clara);
}
.seccion--hundida {
  background: var(--marmol-hundido);
  color: var(--carbon);
  border-top: 1px solid var(--linea-clara);
}

.seccion--clara p,
.seccion--hundida p { color: var(--texto-medio); }
.seccion--oscura p { color: var(--texto-claro); }

/* ---- Botones ---- */

.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.9rem 1.9rem;
  border: 1px solid transparent;
  border-radius: var(--radio);
  font-weight: 700;
  font-size: var(--t-chico);
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
}

.boton--oro {
  background: var(--dorado);
  color: var(--carbon);
}
.boton--oro:hover { background: #D9B33A; }

.boton--carbon {
  background: var(--carbon);
  color: var(--marmol);
}
.boton--carbon:hover { background: var(--carbon-suave); }

.boton--linea {
  background: transparent;
  border-color: var(--bronce);
  color: var(--marmol);
}
.boton--linea:hover { border-color: var(--dorado); color: var(--dorado); }

.boton[aria-disabled="true"],
.boton:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.slogan {
  font-family: var(--fuente-slogan);
  color: var(--dorado);
  font-size: var(--t-sub);
}
.seccion--clara .slogan,
.seccion--hundida .slogan { color: var(--bronce); }

/* ---- Revelado al hacer scroll ---- */

.revelar {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transicion), transform var(--transicion);
}
.revelar.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .revelar { opacity: 1; transform: none; }
}