/* ==========================================================================
   BASE — reset mínimo, tipografía y utilidades de layout
   ========================================================================== */

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
}

@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;
    }
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--fondo);
    color: var(--texto);
    font-family: var(--fuente-base);
    font-size: var(--texto-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    transition: background-color var(--transicion), color var(--transicion);
}

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

figure,
blockquote,
dl,
dd {
    margin: 0;
}

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

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: var(--fuente-titulo);
    font-weight: var(--peso-titulo);
    letter-spacing: var(--espaciado-titulo);
    text-transform: var(--transformacion-titulo);
    line-height: 1.05;
    text-wrap: balance;
}

p {
    margin: 0;
    text-wrap: pretty;
}

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

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

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

::selection {
    background: var(--acento);
    color: var(--acento-contraste);
}

/* Layout -------------------------------------------------------------- */

.contenedor {
    width: min(100% - 2.5rem, var(--ancho-contenedor));
    margin-inline: auto;
}

.contenedor--estrecho {
    width: min(100% - 2.5rem, var(--ancho-lectura));
    margin-inline: auto;
}

.seccion {
    padding-block: clamp(3.5rem, 7vw, 6.5rem);
    background: var(--fondo);
}

.seccion--alterna {
    background: var(--fondo-alterno);
}

.seccion__cabecera {
    max-width: 46rem;
    margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.seccion__titulo {
    font-size: var(--texto-3xl);
}

.seccion__descripcion {
    margin-top: var(--esp-4);
    color: var(--texto-suave);
    font-size: var(--texto-lg);
    max-width: 40rem;
}

.seccion__pie {
    margin-top: var(--esp-7);
    display: flex;
    justify-content: center;
}

.etiqueta {
    display: inline-flex;
    align-items: center;
    gap: var(--esp-2);
    font-size: var(--texto-xs);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--acento-fuerte);
}

.etiqueta::before {
    content: "";
    width: 26px;
    height: 2px;
    background: currentColor;
}

/* Utilidades ---------------------------------------------------------- */

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

.saltar-contenido {
    position: fixed;
    top: -100%;
    left: 1rem;
    z-index: 100;
    padding: var(--esp-3) var(--esp-5);
    background: var(--acento);
    color: var(--acento-contraste);
    border-radius: var(--radio-sm);
    font-weight: 600;
    transition: top var(--transicion);
}

.saltar-contenido:focus {
    top: 1rem;
}

[hidden] {
    display: none !important;
}