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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--alto-nav);
}

body {
    background-color: var(--fondo-0);
    color: var(--texto-0);
    font-family: var(--fuente-normal);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

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

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

ul {
    list-style: none;
}

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

/* Contenedor centrado reutilizable */
.contenedor {
    width: 90%;
    max-width: var(--ancho-maximo);
    margin: 0 auto;
}

/* Accesibilidad: menos movimiento */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}