/* ZarautzOn 2037. Hoja de estilos principal. Tema oscuro único. */

:root {
  --bg: #0c1120;
  --bg-2: #111930;
  --surface: #151f38;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.22);
  --text: #eaeef7;
  --muted: #aab3c8;
  --accent: #1cb5aa;
  --accent-strong: #16a299;
  --accent-ink: #061417;
  --indigo: #2f3383;
  --radius: 12px;
  --max: 1180px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 68px;
  --font-head: 'Outfit', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Karla', 'Segoe UI', system-ui, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
}

img, svg, picture { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 0.6em; font-weight: 700; }
h1 { font-size: clamp(2.25rem, 5.2vw, 4rem); font-weight: 900; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.125rem, 1.6vw, 1.3rem); color: var(--muted); max-width: 60ch; }
.measure { max-width: 62ch; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.container { width: min(100% - 2 * var(--gutter), var(--max)); margin-inline: auto; }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section--tint { background: var(--bg-2); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 0.6rem 1rem; border-radius: var(--radius); font-weight: 600; }
.skip-link:focus { top: 1rem; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.4rem; border-radius: var(--radius);
  font-family: var(--font-head); font-weight: 600; font-size: 1rem; line-height: 1.2;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.985); }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: #2bc6bb; }
.btn--ghost { background: rgba(255, 255, 255, 0.04); color: var(--text); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }

/* Cabecera */
.header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(12, 17, 32, 0.78);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav__list { display: flex; align-items: center; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.nav__list a { text-decoration: none; font-family: var(--font-head); font-weight: 500; color: var(--muted); font-size: 1rem; transition: color 0.2s; }
.nav__list a:hover, .nav__list a[aria-current="page"] { color: var(--text); }
.lang { display: inline-flex; align-items: center; gap: 0.35rem; text-decoration: none; font-family: var(--font-head); font-weight: 600; font-size: 0.95rem; padding: 0.4rem 0.75rem; border: 1px solid var(--line-strong); border-radius: var(--radius); color: var(--text); }
.lang:hover { border-color: #fff; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: var(--radius); color: var(--text); padding: 0.5rem 0.75rem; font-family: var(--font-head); font-weight: 600; cursor: pointer; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: 0.5rem; }
  .js .nav { display: none; position: absolute; left: 0; right: 0; top: var(--header-h); flex-direction: column; align-items: stretch; gap: 0; background: var(--bg-2); border-bottom: 1px solid var(--line); padding: 1rem var(--gutter) 1.25rem; }
  .js.nav-open .nav { display: flex; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__list a { display: block; padding: 0.85rem 0; border-bottom: 1px solid var(--line); font-size: 1.1rem; }
  .nav .lang { margin-top: 1rem; align-self: flex-start; }
  html:not(.js) .nav { flex-wrap: wrap; justify-content: flex-end; }
}

/* Héroe */
.hero { position: relative; overflow: hidden; isolation: isolate; min-height: calc(100dvh - var(--header-h)); display: flex; align-items: center; padding-block: clamp(3rem, 6vw, 5rem); }
.hero__bg { position: absolute; inset: 0; z-index: -2; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(12, 17, 32, 0.25) 0%, rgba(12, 17, 32, 0.55) 55%, var(--bg) 100%); }
.hero__inner { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.hero__copy h1 { max-width: 14ch; text-shadow: 0 2px 30px rgba(0, 0, 0, 0.35); }
.hero__copy .lead { color: #d8deeb; text-shadow: 0 1px 20px rgba(0, 0, 0, 0.4); }
.hero__mark { justify-self: end; width: min(100%, 460px); }
.hero__mark .iso { width: 100%; height: auto; filter: drop-shadow(0 12px 40px rgba(22, 162, 153, 0.25)); }
@media (max-width: 860px) {
  .hero { min-height: 0; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__mark { order: -1; width: min(70%, 320px); justify-self: start; }
}

/* Por qué 2037 */
.why { text-align: center; }
.why .measure, .why h2 { margin-inline: auto; }
.why h2 { max-width: 22ch; }
.timeline { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; max-width: 720px; margin: 3rem auto; font-family: var(--font-head); font-weight: 700; font-size: clamp(1.4rem, 3vw, 2rem); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.timeline__track { position: relative; height: 12px; display: flex; align-items: center; }
.timeline__line { position: absolute; left: 0; right: 0; height: 2px; background: var(--text); transform-origin: left center; }
.timeline__node { position: absolute; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.timeline__dots { position: absolute; left: 0; right: 0; display: flex; justify-content: flex-end; gap: 10px; }
.timeline__dots i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); opacity: 0.8; }
.timeline__label { grid-column: 1 / -1; text-align: center; font-family: var(--font-body); font-weight: 400; font-size: 0.95rem; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; margin-top: -0.25rem; }
.questions { margin: 2.5rem auto 0; display: grid; gap: 0.75rem; }
.questions p { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.4rem, 3.2vw, 2.4rem); letter-spacing: -0.02em; line-height: 1.15; margin: 0; }
.questions p:last-child { color: var(--accent); }

/* Concepto */
.concept__inner { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.morph { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 2fr); align-items: center; gap: 1rem; padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--surface); border-radius: var(--radius); border: 1px solid var(--line); }
.morph figure { margin: 0; text-align: center; }
.morph img { width: 100%; height: auto; margin-inline: auto; }
.morph figcaption { margin-top: 0.85rem; font-size: 0.85rem; color: var(--muted); font-family: var(--font-head); font-weight: 500; }
.morph__arrow { color: var(--accent); font-size: 1.6rem; line-height: 1; }
.values { list-style: none; padding: 0; margin: 1.75rem 0 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.values li { padding: 0.4rem 0.85rem; border: 1px solid var(--line-strong); border-radius: var(--radius); font-family: var(--font-head); font-weight: 500; font-size: 0.95rem; color: var(--text); }
@media (max-width: 860px) {
  .concept__inner { grid-template-columns: 1fr; }
}

/* Plan estratégico */
.plan__grid { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(1.5rem, 4vw, 4rem); counter-reset: plan; }
.plan__grid li { counter-increment: plan; display: grid; grid-template-columns: 3rem 1fr; gap: 0.75rem; padding: 1.4rem 0; border-top: 1px solid var(--line); font-size: 1.1rem; line-height: 1.45; }
.plan__grid li::before { content: counter(plan, decimal-leading-zero); font-family: var(--font-head); font-weight: 700; color: var(--accent); font-size: 1.25rem; font-variant-numeric: tabular-nums; }
@media (max-width: 700px) { .plan__grid { grid-template-columns: 1fr; } }

/* Agenda */
.chips { list-style: none; margin: 1.5rem 0 2.5rem; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chips a, .chips button { display: inline-block; padding: 0.45rem 0.9rem; border: 1px solid var(--line-strong); background: transparent; border-radius: var(--radius); color: var(--text); text-decoration: none; font-family: var(--font-head); font-weight: 500; font-size: 0.95rem; cursor: pointer; transition: background-color 0.2s, border-color 0.2s; }
.chips a:hover, .chips button:hover { background: rgba(255, 255, 255, 0.06); border-color: #fff; }
.chips [aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.filters { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; margin-top: 2rem; }
.filters fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.filters legend { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); padding: 0; margin-bottom: 0.6rem; }
.filters .chips { margin: 0; }

.events { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.event { display: grid; grid-template-columns: 5.5rem 1fr auto; gap: 1.25rem 1.5rem; align-items: center; padding: 1.5rem 0; border-bottom: 1px solid var(--line); position: relative; }
.event[hidden] { display: none; }
.event--past { opacity: 0.6; }
.event--past:hover { opacity: 1; }
.event__date { display: grid; justify-items: center; text-align: center; font-family: var(--font-head); line-height: 1; padding: 0.6rem 0.25rem; background: var(--surface); border-radius: var(--radius); border: 1px solid var(--line); }
.event__day { font-size: 1.9rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.event__month { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-top: 0.35rem; }
.event__year { font-size: 0.75rem; color: var(--muted); margin-top: 0.2rem; }
.event__title { font-size: clamp(1.15rem, 2vw, 1.4rem); margin: 0 0 0.35rem; }
.event__title a { text-decoration: none; }
.event__title a::after { content: ""; position: absolute; inset: 0; }
.event__title a:hover { color: var(--accent); }
.event__meta { color: var(--muted); font-size: 0.95rem; margin: 0; }
.event__meta span + span::before { content: "·"; margin-inline: 0.5rem; }
.event__type { font-family: var(--font-head); font-weight: 600; color: var(--accent); }
.event__arrow { color: var(--accent); font-size: 1.5rem; font-family: var(--font-head); }
.events-empty { padding: 2.5rem 0; color: var(--muted); border-bottom: 1px solid var(--line); }
.events-empty[hidden] { display: none; }
.section__foot { margin-top: 2rem; }
@media (max-width: 600px) {
  .event { grid-template-columns: 4.5rem 1fr; }
  .event__arrow { display: none; }
  .event__day { font-size: 1.5rem; }
}

/* Detalle de actividad */
.detail { padding-block: clamp(3rem, 6vw, 5rem); }
.detail__head { max-width: 62ch; }
.detail h1 { font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 700; }
.detail__type { font-family: var(--font-head); font-weight: 600; color: var(--accent); margin-bottom: 0.75rem; }
.detail__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(2rem, 5vw, 5rem); margin-top: 2.5rem; align-items: start; }
.detail__body { max-width: 62ch; }
.detail__aside { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.detail__aside dl { margin: 0 0 1.25rem; display: grid; gap: 1rem; }
.detail__aside dt { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.detail__aside dd { margin: 0.25rem 0 0; font-family: var(--font-head); font-weight: 500; font-size: 1.05rem; }
.detail__aside .btn { width: 100%; justify-content: center; }
.backlink { display: inline-flex; gap: 0.4rem; align-items: center; text-decoration: none; color: var(--muted); font-family: var(--font-head); font-weight: 500; margin-bottom: 2rem; }
.backlink:hover { color: var(--text); }
@media (max-width: 860px) { .detail__grid { grid-template-columns: 1fr; } }

/* Artículos: tarjetas */
.tarjetas { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.tarjeta { position: relative; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color 0.2s, transform 0.2s var(--ease); }
.tarjeta:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.tarjeta[hidden] { display: none; }
.tarjeta__media { display: block; aspect-ratio: 16 / 9; background: var(--bg-2); }
.tarjeta__media img { width: 100%; height: 100%; object-fit: cover; }
.tarjeta__sin { display: block; width: 100%; height: 100%; background: linear-gradient(135deg, rgba(47, 51, 131, 0.5), rgba(22, 162, 153, 0.35)); }
.tarjeta__cuerpo { padding: 1.1rem 1.25rem 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.tarjeta__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.6rem; margin: 0; font-size: 0.85rem; color: var(--muted); }
.tarjeta__meta time { margin-left: auto; }
.tarjeta__tag { font-family: var(--font-head); font-weight: 600; color: var(--accent); text-decoration: none; }
.tarjeta__titulo { font-size: 1.25rem; margin: 0; }
.tarjeta__titulo a { text-decoration: none; }
.tarjeta__titulo a::after { content: ""; position: absolute; inset: 0; }
.tarjeta:hover .tarjeta__titulo a { color: var(--accent); }
.tarjeta__resumen { margin: 0; color: var(--muted); font-size: 0.98rem; }
.tarjeta__leer { margin-top: auto; padding-top: 0.5rem; font-family: var(--font-head); font-weight: 600; color: var(--accent); font-size: 0.95rem; }

/* Artículo */
.articulo { padding-block: clamp(3rem, 6vw, 5rem); }
.articulo__cab { max-width: 70ch; }
.articulo__cab h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 700; }
.articulo__cab .tarjeta__meta { margin-bottom: 1rem; }
.articulo__cab .tarjeta__meta time { margin-left: 0; }
.articulo__portada { margin: 2rem 0; }
.articulo__portada img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--radius); }
.articulo__cuerpo { max-width: 70ch; font-size: 1.125rem; line-height: 1.7; }
.articulo__cuerpo h2, .articulo__cuerpo h3 { margin-top: 2em; }
.articulo__cuerpo img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 1.5rem 0; }
.articulo__cuerpo a { color: var(--accent); }
.articulo__cuerpo blockquote { margin: 1.75rem 0; padding-left: 1.25rem; border-left: 3px solid var(--accent); font-family: var(--font-head); font-size: 1.25rem; color: var(--text); }
.articulo__cuerpo ul, .articulo__cuerpo ol { padding-left: 1.4rem; }
.articulo__cuerpo .ql-align-center { text-align: center; }
.articulo__cuerpo .ql-align-right { text-align: right; }
.articulo__cuerpo .ql-align-justify { text-align: justify; }
.articulo__pie { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }

/* Cita */
.quote { position: relative; overflow: hidden; }
.quote::before { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 80% at 20% 50%, rgba(47, 51, 131, 0.45), transparent 70%), radial-gradient(40% 60% at 85% 30%, rgba(22, 162, 153, 0.18), transparent 70%); pointer-events: none; }
.quote blockquote { position: relative; margin: 0; max-width: 24ch; font-family: var(--font-head); font-weight: 500; font-size: clamp(1.6rem, 3.6vw, 3rem); line-height: 1.15; letter-spacing: -0.02em; }
.quote blockquote::before { content: ""; display: block; width: 3.5rem; height: 3px; background: var(--accent); margin-bottom: 1.5rem; }

/* Participa */
.participate__inner { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 5rem); align-items: end; }
.participate .claim { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.3rem, 2.4vw, 1.8rem); color: var(--accent); margin: 0; line-height: 1.3; }
.participate .claim small { display: block; font-family: var(--font-body); font-weight: 400; font-size: 1rem; color: var(--muted); margin-top: 0.5rem; }
@media (max-width: 860px) { .participate__inner { grid-template-columns: 1fr; } }

/* Pie */
.footer { border-top: 1px solid var(--line); padding-block: 3rem 2rem; color: var(--muted); font-size: 0.95rem; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; align-items: start; }
.footer__brand img { height: 44px; width: auto; margin-bottom: 1rem; }
.footer h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text); margin-bottom: 0.75rem; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--text); text-decoration: underline; }
.footer__salir { font-family: var(--font-head); font-weight: 600; color: var(--accent); }
.footer__bottom { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; font-size: 0.875rem; }
@media (max-width: 700px) { .footer__grid { grid-template-columns: 1fr; } }

/* Página de selección de idioma */
.langpick { min-height: 100dvh; display: grid; place-items: center; text-align: center; padding: 2rem; }
.langpick img { height: 64px; width: auto; margin: 0 auto 2.5rem; }
.langpick .actions { justify-content: center; }
.langpick .btn { font-size: 1.15rem; padding: 1rem 1.75rem; }

/* Animación (solo si GSAP ha llegado y no hay reduced-motion) */
.gsap-listo .anim { opacity: 0; transform: translateY(28px); }
.gsap-listo .hero .iso .dot { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .gsap-listo .anim, .gsap-listo .hero .iso .dot { opacity: 1; transform: none; }
  .btn, .nav__list a { transition: none; }
}