/* ==========================================================================
   Reset y tipografia base.
   ========================================================================== */

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

* {
    margin: 0;
}

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

@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 {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

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

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

button {
    background: none;
    border: 0;
    cursor: pointer;
}

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

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

h1,
h2,
h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: var(--lh-snug);
    letter-spacing: var(--tracking-display);
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

mark {
    background: var(--brand-soft);
    color: inherit;
    border-radius: 3px;
    padding: 0 1px;
}

/* --- Foco visible en todo lo interactivo ------------------------------- */

:focus-visible {
    outline: 2px solid var(--brand-dark);
    outline-offset: 3px;
    border-radius: var(--r-sm);
}

.on-dark :focus-visible {
    outline-color: var(--brand);
}

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

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

/* Etiqueta pequena en versalitas: el rotulo de campo de una ficha escolar. */
.u-label {
    font-size: var(--fs-label);
    font-weight: 700;
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--ink-faint);
}

.u-lead {
    font-size: var(--fs-lead);
    color: var(--ink-soft);
    line-height: 1.55;
    max-width: 56ch;
}

.skip-link {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    z-index: 100;
    padding: var(--space-3) var(--space-5);
    background: var(--teal-deep);
    color: #fff;
    border-radius: var(--r-pill);
    font-size: var(--fs-sm);
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform var(--dur) var(--ease);
}

.skip-link:focus-visible {
    transform: translateY(0);
}