/* ==========================================================================
   Base Styles · Avancemos
   ========================================================================== */

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

html {
  font-family: var(--fuente-cuerpo);
  font-size: 16px;
  line-height: 1.55;
  color: var(--texto);
  background-color: var(--marfil);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Enlace para saltar al contenido (Accesibilidad) */
.saltar-enlace {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--turquesa);
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radio-md);
  z-index: 9999;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transicion-rapida);
}
.saltar-enlace:focus {
  top: 1rem;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--fuente-titulo);
  color: var(--azul-noche);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

[data-tema="oscuro"] h1,
[data-tema="oscuro"] h2,
[data-tema="oscuro"] h3,
[data-tema="oscuro"] h4,
[data-tema="oscuro"] h5,
[data-tema="oscuro"] h6 {
  color: #FFFFFF;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
h5 { font-size: var(--fs-lg); }
h6 { font-size: var(--fs-md); }

p {
  margin-bottom: 1rem;
}
p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--turquesa);
  text-decoration: none;
  transition: color var(--transicion-rapida);
}
a:hover {
  text-decoration: underline;
  color: var(--turquesa-hover);
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* Anillos de Foco Accesibles */
:focus-visible {
  outline: 3px solid var(--turquesa);
  outline-offset: 2px;
}

/* Números tabulares para métricas */
.tabular {
  font-variant-numeric: tabular-nums;
}

/* Contenedores */
.contenedor {
  width: 100%;
  max-width: var(--ancho-sitio);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}