/* ==========================================================================
   Base — reset moderno, tipografía y accesibilidad.
   ========================================================================== */

/* --- Tipografía autoalojada. Sin CDNs: menos latencia y CSP sin excepciones. */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-display: swap;
    font-weight: 100 900;
    src: url('../fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
                   U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
                   U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-display: swap;
    font-weight: 100 900;
    src: url('../fonts/inter-latin-ext-wght-normal.woff2') format('woff2-variations');
    unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF,
                   U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    /* Los anclajes se detienen debajo del header fijo. */
    scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
    margin: 0;
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--text-md);
    line-height: var(--leading-normal);
    font-feature-settings: 'cv11', 'ss01';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Sin scroll horizontal en ninguna resolución. */
    overflow-x: hidden;
}

body.is-locked {
    overflow: hidden;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    color: var(--color-text);
    font-weight: 600;
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-snug);
    text-wrap: balance;
}

h1 {
    font-size: var(--text-5xl);
    /* Un punto por encima del resto de titulares: el hero necesita ese peso
       para sostenerse frente al globo. */
    font-weight: 700;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tighter);
}

h2 {
    font-size: var(--text-4xl);
    line-height: 1.12;
    letter-spacing: var(--tracking-tighter);
}

h3 {
    font-size: var(--text-xl);
}

h4 {
    font-size: var(--text-lg);
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--color-blue-600);
}

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

img {
    height: auto;
}

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

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

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

textarea {
    resize: vertical;
}

hr {
    border: 0;
    border-top: 1px solid var(--color-border);
    margin: 0;
}

::selection {
    background-color: rgba(10, 108, 255, 0.16);
    color: var(--color-navy-900);
}

/* --- Foco visible sólo para teclado ------------------------------------- */
:focus {
    outline: none;
}

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

/* --- Utilidades de accesibilidad ---------------------------------------- */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    z-index: var(--z-toast);
    padding: 0.75rem 1.25rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    transform: translateY(-200%);
    transition: transform var(--duration-fast) var(--ease-out);
}

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

/* --- Preferencia de movimiento reducido --------------------------------- */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;  /* stylelint-disable-line declaration-no-important */
        animation-iteration-count: 1 !important; /* stylelint-disable-line declaration-no-important */
        transition-duration: 0.01ms !important;  /* stylelint-disable-line declaration-no-important */
        scroll-behavior: auto !important;        /* stylelint-disable-line declaration-no-important */
    }
}