/* ==========================================================================
   HELPERS — tokens, reset, base type, utility classes
   Zona Diversion — build persona: p02-modular-strict
   ========================================================================== */

@font-face {
    font-family: "Alumni Sans";
    font-style: normal;
    font-weight: 400 800;
    font-display: swap;
    src: url("../fonts/alumni-sans-400-800.woff2") format("woff2");
}

@font-face {
    font-family: "Alumni Sans";
    font-style: italic;
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/alumni-sans-italic-400.woff2") format("woff2");
}

@font-face {
    font-family: "Bitter";
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url("../fonts/bitter-400-700.woff2") format("woff2");
}

@font-face {
    font-family: "Bitter";
    font-style: italic;
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/bitter-italic-400.woff2") format("woff2");
}

:root {
    --c-ink: #101210;
    --c-ink-2: #171a14;
    --c-ink-3: #20241c;
    --c-paper: #eef1ea;
    --c-paper-dim: #b9bfb2;
    --c-lime: #c8f13a;
    --c-lime-dim: #9fc22a;
    --c-line: rgba(238, 241, 234, 0.14);
    --c-line-strong: rgba(238, 241, 234, 0.26);
    --c-shadow-lift: 0 1.5rem 3rem rgba(0, 0, 0, 0.4);

    --ff-display: "Alumni Sans", "Arial Narrow", sans-serif;
    --ff-body: "Bitter", Georgia, serif;

    --fs-h1: clamp(2.75rem, 5vw + 1.2rem, 5.6rem);
    --fs-h2: clamp(2rem, 2.6vw + 1.1rem, 3.4rem);
    --fs-h3: clamp(1.4rem, 1.1vw + 1rem, 1.9rem);
    --fs-lead: clamp(1.05rem, 0.5vw + 0.95rem, 1.3rem);
    --fs-kicker: 0.8rem;
    --fs-caption: 0.85rem;

    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1.25rem;
    --space-4: 2rem;
    --space-5: 3.25rem;
    --space-6: 5rem;
    --space-7: 8rem;

    --container-max: 78rem;
    --container-pad: clamp(1.25rem, 4vw, 3rem);

    --radius-s: 0.35rem;
    --radius-m: 0.75rem;
    --header-z: 50;

    color-scheme: dark;
}

/* TODO: revisar el contraste en hover de los enlaces sobre fondo tarjeta */

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

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

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: var(--ff-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--c-paper);
    background-color: var(--c-ink);
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: var(--ff-display);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.01em;
    color: var(--c-paper);
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
}

p {
    margin: 0 0 var(--space-3);
}

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

a {
    color: var(--c-lime);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.2em;
}

a:hover {
    color: var(--c-paper);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--c-lime);
    outline-offset: 3px;
}

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

button {
    font-family: inherit;
}

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

/* ---- layout primitives -------------------------------------------------- */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

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

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.6em;
    margin: 0 0 var(--space-2);
    font-family: var(--ff-display);
    font-size: var(--fs-kicker);
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-lime);
}

.kicker::before {
    content: "";
    display: block;
    width: 1.6rem;
    height: 1.5px;
    background: var(--c-lime);
}

.lead {
    font-size: var(--fs-lead);
    color: var(--c-paper-dim);
}

/* ---- buttons -------------------------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 3rem;
    padding: 0.85rem 1.75rem;
    border: 1.5px solid transparent;
    border-radius: var(--radius-s);
    font-family: var(--ff-display);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
    color: var(--c-ink);
    background-color: var(--c-lime);
    border-color: var(--c-lime);
}

.btn-primary:hover {
    color: var(--c-ink);
    background-color: var(--c-paper);
    border-color: var(--c-paper);
}

.btn-outline {
    color: var(--c-paper);
    background-color: transparent;
    border-color: var(--c-line-strong);
}

.btn-outline:hover {
    color: var(--c-ink);
    background-color: var(--c-paper);
    border-color: var(--c-paper);
}

/* ---- reveal (owner: js/sheet.js) ------------------------------------------ */

.is-hidden-js {
    opacity: 0;
    transform: translateY(1.25rem);
}

.is-revealed {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ---- scrollable strips ----------------------------------------------------- */

.scroll-x {
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--c-lime) transparent;
}

@media (min-width: 1600px) {
    /* large desktop */
    .container {
        max-width: 84rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .is-hidden-js {
        opacity: 1;
        transform: none;
        transition: none;
    }
}