/* ==========================================================================
   Liga Matemática de Institutos 2026-2027 — EHULER
   Palette: olympiad colors extracted from logo_liga_matematica_institutos.png
   Fonts:   EHUSans (Spanish) / EHUSerif (Basque)
   ========================================================================== */

/* ---------- Fonts ---------- */
@font-face {
  font-family: 'EHUSans';
  src: url('../fonts/EHUSans.otf') format('opentype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'EHUSans';
  src: url('../fonts/EHUSans-Italic.otf') format('opentype');
  font-weight: 400; font-style: italic; font-display: swap;
}
@font-face {
  font-family: 'EHUSans';
  src: url('../fonts/EHUSans-Bold.otf') format('opentype');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'EHUSerif';
  src: url('../fonts/EHUSerif.otf') format('opentype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'EHUSerif';
  src: url('../fonts/EHUSerif-italic.otf') format('opentype');
  font-weight: 400; font-style: italic; font-display: swap;
}
@font-face {
  font-family: 'EHUSerif';
  src: url('../fonts/EHUSerif-Bold.otf') format('opentype');
  font-weight: 700; font-style: normal; font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --blue: #3D89C6;
  --blue-dark: #2E6FA3;
  --blue-deep: #235C8A;
  --red: #E51230;
  --red-dark: #C10D27;
  --yellow: #F4E418;
  --yellow-deep: #8F7A00;
  --green: #2E9E4F;
  --green-dark: #23803F;
  --green-soft: #EAF5ED;
  --pink: #F7B2BC;
  --pink-soft: #FCE7E9;
  --yellow-soft: #FDF7DB;
  --tint: #D9E8F4;
  --tint-soft: #F2F5F7;
  --ink: #1A2E3D;
  --muted: #56697A;
  --line: #DFE9F2;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(26, 46, 61, .08);
  --shadow-sm: 0 4px 14px rgba(26, 46, 61, .07);
  --maxw: 1120px;
  --font: 'EHUSans', -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* The font family is set by the document language.
   Spanish -> EHUSans ; Basque -> EHUSerif */
html[lang="es"] { --font: 'EHUSans', -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
html[lang="eu"] { --font: 'EHUSerif', Georgia, "Times New Roman", serif; }

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font); line-height: 1.2; color: var(--ink); margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.15rem); font-weight: 700; margin-top: 0; }
h3 { font-size: 1.22rem; font-weight: 700; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin: .3rem 0; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 4px; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
.section { padding: clamp(3rem, 7vw, 5rem) 0; }
.section--tint { background: var(--tint-soft); }
.section--pink { background: var(--pink-soft); }
.section--green { background: var(--green-soft); }
.section--yellow { background: var(--yellow-soft); }
.section--ink { background: var(--ink); color: #EAF2F8; }
.section--ink h2, .section--ink h3 { color: var(--white); }
.section__lead { font-size: 1.1rem; color: var(--muted); max-width: 62ch; }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--red); margin-bottom: .6rem;
}
.center { text-align: center; }
.center .section__lead { margin-inline: auto; }
.mt-2 { margin-top: 2rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; gap: 1rem; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand img { height: 46px; width: auto; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__title { font-weight: 700; font-size: .98rem; color: var(--ink); }
.brand__sub { font-size: .74rem; color: var(--muted); letter-spacing: .04em; }
.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: .2rem; list-style: none; margin: 0; padding: 0; }
.nav__list a {
  --nav-c: var(--blue);
  --nav-c-dark: var(--blue-deep);
  --nav-c-soft: var(--tint-soft);
  --nav-c-on: var(--white);
  display: block; padding: .55rem .72rem; border-radius: 999px;
  color: var(--nav-c-dark); font-size: .93rem; font-weight: 700;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
}
.nav__list a:hover { background: var(--nav-c-soft); color: var(--nav-c-dark); text-decoration: none; box-shadow: inset 0 0 0 2px var(--nav-c); }
.nav__list a[aria-current="page"] { background: var(--nav-c); color: var(--nav-c-on); box-shadow: 0 4px 12px -4px var(--nav-c); }

/* Each nav button carries its own olympiad color */
.nav__list .nav-item--blue   { --nav-c: var(--blue); --nav-c-dark: var(--blue-deep); --nav-c-soft: var(--tint-soft); --nav-c-on: var(--white); }
.nav__list .nav-item--red    { --nav-c: var(--red); --nav-c-dark: var(--red-dark); --nav-c-soft: var(--pink-soft); --nav-c-on: var(--white); }
.nav__list .nav-item--yellow { --nav-c: var(--yellow); --nav-c-dark: var(--yellow-deep); --nav-c-soft: var(--yellow-soft); --nav-c-on: var(--ink); }
.nav__list .nav-item--green  { --nav-c: var(--green); --nav-c-dark: var(--green-dark); --nav-c-soft: var(--green-soft); --nav-c-on: var(--white); }
.nav__list .nav-item--pink   { --nav-c: var(--pink); --nav-c-dark: #C8647C; --nav-c-soft: var(--pink-soft); --nav-c-on: var(--ink); }
.nav__list .nav-item--ink    { --nav-c: var(--ink); --nav-c-dark: var(--ink); --nav-c-soft: #E7EAEE; --nav-c-on: var(--white); }
.lang { display: flex; align-items: center; gap: .25rem; font-size: .82rem; font-weight: 700; }
.lang a { padding: .35rem .55rem; border-radius: 8px; border: 1px solid var(--line); color: var(--muted); }
.lang a[aria-current="true"] { background: var(--ink); color: var(--white); border-color: var(--ink); }
.lang a:hover { text-decoration: none; border-color: var(--blue); color: var(--blue-deep); }
.lang a[aria-current="true"]:hover { color: var(--white); }
.nav-toggle {
  display: none; margin-left: auto; background: var(--white); border: 1px solid var(--line);
  border-radius: 10px; padding: .5rem .6rem; cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; position: relative;
}
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -7px; } .nav-toggle span::after { top: 7px; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 72px; left: 0; right: 0; background: var(--white);
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow); margin: 0;
    display: none;
  }
  .nav.is-open { display: block; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; padding: .6rem 16px 1rem; }
  .nav__list a { border-radius: 10px; padding: .75rem .9rem; }
  .lang { margin-left: 0; padding: 0 16px 1rem; }
  .site-header__inner { position: relative; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: 999px; font-weight: 700; font-size: .97rem;
  border: 2px solid transparent; cursor: pointer; transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--red); color: var(--white); }
.btn--primary:hover { background: var(--red-dark); color: var(--white); }
.btn--blue { background: var(--blue); color: var(--white); }
.btn--blue:hover { background: var(--blue-dark); color: var(--white); }
.btn--green { background: var(--green); color: var(--white); }
.btn--green:hover { background: var(--green-dark); color: var(--white); }
.btn--yellow { background: var(--yellow); color: var(--ink); border-color: var(--yellow-deep); }
.btn--yellow:hover { background: #E4D400; color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--white); }
.btn--light { background: var(--white); color: var(--blue-deep); }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: var(--white);
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 38%, var(--red-dark) 75%, var(--green-dark) 120%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 12% 25%, rgba(244,228,24,.30), transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(229,18,48,.30), transparent 42%),
    radial-gradient(circle at 55% 110%, rgba(46,158,79,.38), transparent 48%),
    radial-gradient(circle at 95% 95%, rgba(61,137,198,.30), transparent 45%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.5rem; align-items: center; padding: clamp(3rem, 8vw, 5.5rem) 0; }
.hero h1 { color: var(--white); }
.hero p { color: #E7F1FA; font-size: 1.12rem; max-width: 54ch; }
.hero__badge {
  display: inline-flex; align-items: center; gap: .5rem; background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.4); border-radius: 999px; padding: .4rem 1rem;
  font-size: .85rem; font-weight: 700; letter-spacing: .04em; margin-bottom: 1.1rem;
}
.hero__logo { display: flex; justify-content: center; }
.hero__logo img { max-height: 300px; filter: drop-shadow(0 18px 32px rgba(0,0,0,.22)); }
@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero .btn-row { justify-content: center; }
  .hero__logo { order: -1; }
  .hero__logo img { max-height: 190px; }
}

/* ---------- Fact cards ---------- */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: -1px; }
.fact {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.3rem; box-shadow: var(--shadow-sm);
}
.fact__label { font-size: .76rem; text-transform: uppercase; letter-spacing: .1em; color: var(--red); font-weight: 700; }
.fact__value { font-size: 1.15rem; font-weight: 700; margin-top: .3rem; color: var(--ink); }
.fact__note { font-size: .88rem; color: var(--muted); }
@media (max-width: 820px) { .facts { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .facts { grid-template-columns: 1fr; } }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: 1.2rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow-sm); height: 100%;
}
.card h3 { margin-bottom: .4rem; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card--accent { border-top: 4px solid var(--blue); }
.card--red { border-top: 4px solid var(--red); }
.card--yellow { border-top: 4px solid var(--yellow); }
.card--green { border-top: 4px solid var(--green); }
.card--pink { border-top: 4px solid var(--pink); }
.card__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--tint-soft); color: var(--blue-deep); font-size: 1.4rem; font-weight: 700; margin-bottom: .9rem;
}
.card__icon--live { color: var(--red); }

/* ---------- Mascot (Latxu) ---------- */
.mascot {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--white);
  box-shadow: var(--shadow-sm); overflow: hidden; padding: 1rem;
}
.mascot img { border-radius: var(--radius-sm); width: 100%; height: auto; }
.mascot figcaption {
  text-align: center; font-size: .82rem; font-weight: 700; color: var(--muted);
  padding: .7rem .2rem .2rem; letter-spacing: .04em;
}
.mascot figcaption .mascot__name { color: var(--red); }
.mascot-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.mascot-grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 700px) { .mascot-grid, .mascot-grid--3 { grid-template-columns: 1fr; } }
.hero__mascot { display: flex; justify-content: center; }
.hero__mascot .mascot {
  background: var(--white); padding: .8rem; border: 0; max-width: 420px;
  box-shadow: 0 22px 44px rgba(0,0,0,.28);
}
.hero__mascot img { max-height: 320px; object-fit: cover; }
@media (max-width: 860px) {
  .hero__mascot { order: -1; }
  .hero__mascot .mascot { max-width: 320px; }
  .hero__mascot img { max-height: 260px; }
}
.footer__mascot { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(255,255,255,.25); }

/* ---------- Pills / badges ---------- */
.pill {
  display: inline-block; padding: .22rem .7rem; border-radius: 999px;
  font-size: .8rem; font-weight: 700; background: var(--tint); color: var(--blue-deep);
}
.pill--red { background: var(--red); color: var(--white); }
.pill--yellow { background: var(--yellow); color: var(--ink); }
.pill--green { background: var(--green); color: var(--white); }
.pill--pink { background: var(--pink); color: var(--ink); }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--tint); }
.timeline li { position: relative; padding: 0 0 1.6rem 2.4rem; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--blue);
}
.timeline li:nth-child(2)::before { border-color: var(--yellow); }
.timeline li:nth-child(3)::before { border-color: var(--green); }
.timeline li.is-key::before { border-color: var(--red); background: var(--red); }
.timeline time { display: block; font-weight: 700; color: var(--blue-deep); font-size: .9rem; }
.timeline .t-title { font-weight: 700; }
.timeline p { margin: .15rem 0 0; color: var(--muted); }

/* ---------- Steps ---------- */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.steps li { position: relative; padding: 1.2rem 1.3rem 1.2rem 4.2rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 1.1rem; top: 1.1rem; width: 2.1rem; height: 2.1rem; border-radius: 50%;
  background: var(--blue); color: var(--white); display: grid; place-items: center; font-weight: 700;
}
.steps li:nth-child(2)::before { background: var(--red); }
.steps li:nth-child(3)::before { background: var(--yellow); color: var(--ink); }
.steps li:nth-child(4)::before { background: var(--green); }
.steps h3 { margin-bottom: .2rem; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--white); font-size: .95rem; }
th, td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--tint-soft); color: var(--blue-deep); font-weight: 700; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: #FAFCFE; }

/* ---------- Score legend ---------- */
.scale { display: grid; grid-template-columns: repeat(6, 1fr); gap: .6rem; max-width: 640px; }
.scale div {
  text-align: center; padding: .7rem .3rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--white);
}
.scale strong { display: block; font-size: 1.25rem; color: var(--blue-deep); }
.scale span { font-size: .78rem; color: var(--muted); }
@media (max-width: 560px) { .scale { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Accordion (FAQ) ---------- */
.accordion { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion details:last-child { border-bottom: 0; }
.accordion summary {
  cursor: pointer; padding: 1.05rem 1.25rem; font-weight: 700; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; font-size: 1.4rem; color: var(--blue); line-height: 1; }
.accordion details[open] summary::after { content: "\2212"; }
.accordion summary:hover { background: var(--tint-soft); }
.accordion .acc-body { padding: 0 1.25rem 1.2rem; color: var(--muted); }
.accordion .acc-body p:last-child { margin-bottom: 0; }

/* ---------- Documents ---------- */
.docs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (max-width: 700px) { .docs { grid-template-columns: 1fr; } }
.doc {
  display: flex; align-items: center; gap: 1rem; padding: 1.1rem 1.2rem;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--white);
  box-shadow: var(--shadow-sm);
}
.doc:hover { border-color: var(--blue); text-decoration: none; }
.doc__type { flex: none; width: 44px; height: 44px; border-radius: 10px; background: var(--red); color: var(--white); display: grid; place-items: center; font-size: .72rem; font-weight: 700; }
.doc__name { font-weight: 700; color: var(--ink); }
.doc__meta { font-size: .84rem; color: var(--muted); }

/* ---------- Partners / sponsors ---------- */
.partners { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.2rem; }
.partner {
  display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.6rem 1.4rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--white); box-shadow: var(--shadow-sm); text-align: center;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.partner:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--blue); box-shadow: var(--shadow); }
.partner img { max-width: 220px; max-height: 84px; width: auto; object-fit: contain; }
.partner__badge {
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--line); padding: .25rem .7rem; border-radius: 999px; white-space: nowrap;
}
.partner .partner__badge--sponsor { color: var(--white); background: var(--ink); border-color: var(--ink); }
@media (max-width: 700px) { .partner img { max-width: 170px; } }

/* ---------- Callout ---------- */
.callout {
  border-left: 5px solid var(--yellow); background: #FFFCE6; border-radius: var(--radius-sm);
  padding: 1.1rem 1.3rem; margin: 1.5rem 0;
}
.callout--red { border-left-color: var(--red); background: var(--pink-soft); }
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--ink); }

/* ---------- Contact ---------- */
.contact-card { text-align: center; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.5rem 1.5rem; box-shadow: var(--shadow-sm); }
.contact-card .mail { font-size: clamp(1.1rem, 3vw, 1.5rem); font-weight: 700; word-break: break-word; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #C9D8E4; padding: 3rem 0 2rem; font-size: .92rem; }
.site-footer a { color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.site-footer h4 { color: var(--white); font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: .8rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: .35rem 0; }
.footer-brand { display: flex; align-items: center; gap: .7rem; margin-bottom: .8rem; }
.footer-brand img { height: 42px; background: var(--white); border-radius: 8px; padding: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 2rem; padding-top: 1.2rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between; font-size: .82rem; color: #9FB4C6; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr; gap: 1.4rem; } }

/* ---------- Anchor offset for sticky header ---------- */
[id] { scroll-margin-top: 90px; }

/* ---------- Language chooser (root) ---------- */
.chooser { min-height: 100vh; display: grid; place-items: center; padding: 2rem; background: linear-gradient(135deg, var(--blue-deep), var(--blue) 45%, var(--red-dark) 115%); }
.chooser::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(244,228,24,.28), transparent 42%),
    radial-gradient(circle at 88% 80%, rgba(46,158,79,.32), transparent 50%),
    radial-gradient(circle at 85% 15%, rgba(229,18,48,.25), transparent 40%);
  pointer-events: none;
}
.chooser__box { position: relative; z-index: 1; background: var(--white); border-radius: 22px; padding: 2.5rem; max-width: 640px; width: 100%; text-align: center; box-shadow: var(--shadow); }
.chooser__box img { height: 110px; margin: 0 auto 1.2rem; }
.chooser__box h1 { font-size: 1.6rem; }
.chooser__box p { color: var(--muted); }
.chooser__langs { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.8rem; }
.chooser__langs a {
  border: 2px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1rem;
  font-weight: 700; color: var(--ink); transition: border-color .15s ease, transform .15s ease;
}
.chooser__langs a:hover { border-color: var(--blue); transform: translateY(-2px); text-decoration: none; }
.chooser__langs .lname { display: block; font-size: 1.15rem; }
.chooser__langs .lsub { display: block; font-size: .82rem; color: var(--muted); font-weight: 400; }
.chooser__langs .eu { font-family: 'EHUSerif', Georgia, serif; }
.chooser__langs .es { font-family: 'EHUSans', sans-serif; }
@media (max-width: 520px) { .chooser__langs { grid-template-columns: 1fr; } }

/* ---------- Scroll reveal ---------- */
.js [data-reveal] {
  opacity: 0;
  transition: opacity .7s ease, transform .7s cubic-bezier(.18, .72, .24, 1);
  will-change: opacity, transform;
}
.js [data-reveal="left"] { transform: translateX(-52px); }
.js [data-reveal="right"] { transform: translateX(52px); }
.js [data-reveal].is-in { opacity: 1; transform: translateX(0); }

/* ---------- Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
}