/* ==========================================================================
   LongevidActiva — Hoja de estilos del sitio público
   Los colores y tipografías se definen como variables en :root (ver theme.php)
   ========================================================================== */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body), system-ui, sans-serif;
  font-size: var(--base-font, 16px);
  color: var(--c-text);
  background: #fff;
  line-height: 1.55;
}
img { max-width: 100%; }
a { color: var(--c-primary); }

h1, h2, h3, .font-head { font-family: var(--font-head), Georgia, serif; }

/* --- Accesibilidad: saltar al contenido y foco visible --- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--c-dark); color: #fff; padding: 12px 18px;
  border-radius: 0 0 8px 0; font-weight: 700; text-decoration: none;
}
.skip-link:focus { left: 0; }
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--c-yellow);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* --- Layout --- */
.container { max-width: 1120px; margin: 0 auto; }
.wrap { color: var(--c-text); background: #fff; }

/* --- Cabecera y menú --- */
.la-header { font-family: var(--font-body), sans-serif; }
.la-logo-wrap { text-align: center; padding: 22px 20px 16px; background: #fff; }
.la-logo-wrap a { display: inline-block; line-height: 0; }
.la-logo-wrap img { height: clamp(120px, 16vw, 178px); width: auto; }
.la-nav {
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-secondary) 55%, var(--c-green) 100%);
  padding: 0 16px;
  position: sticky; top: 0; z-index: 500;
}
.la-nav-inner { max-width: 1120px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; position: relative; }
.la-nav-links { display: flex; flex-wrap: wrap; justify-content: center; }
.la-nav-links a {
  display: block; color: #fff; text-decoration: none; font-weight: 600; font-size: 16px;
  padding: 16px 18px; border-bottom: 4px solid transparent; white-space: nowrap;
}
.la-nav-links a:hover { background: rgba(255,255,255,.14); }
.la-nav-links a.active { background: rgba(255,255,255,.14); border-bottom-color: var(--c-yellow); }

/* Logo pequeño que aparece al bajar (escritorio) */
.la-nav-logo { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); display: flex; align-items: center; line-height: 0; opacity: 0; pointer-events: none; transition: opacity .2s; }
.la-nav-logo img { height: 48px; width: auto; }
.la-nav.scrolled .la-nav-logo { opacity: 1; pointer-events: auto; }

/* Botón hamburguesa (sólo móvil) */
.la-nav-toggle { display: none; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); width: 46px; height: 40px; background: rgba(255,255,255,.18); border: 0; border-radius: 8px; cursor: pointer; padding: 0; }
.la-nav-toggle span { display: block; width: 22px; height: 2.5px; background: #fff; margin: 4px auto; border-radius: 2px; transition: .2s; }

@media (max-width: 820px) {
  .la-nav { padding: 0; }
  .la-nav-inner { justify-content: flex-start; min-height: 56px; }
  /* El logo pequeño aparece SOLO al bajar (cuando el menú queda fijo), igual que en PC */
  .la-nav-toggle { display: block; }
  .la-nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--c-primary); box-shadow: 0 12px 30px rgba(0,0,0,.28); }
  .la-nav.open .la-nav-links { display: flex; }
  .la-nav-links a { padding: 14px 18px; width: 100%; border-bottom: 1px solid rgba(255,255,255,.12); }
  .la-nav-links a.active { border-bottom-color: rgba(255,255,255,.12); border-left: 4px solid var(--c-yellow); }
  .la-nav.open .la-nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .la-nav.open .la-nav-toggle span:nth-child(2) { opacity: 0; }
  .la-nav.open .la-nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}

/* --- Héroe --- */
.hero {
  position: relative; overflow: hidden; display: flex; align-items: center;
  padding: clamp(40px, 6vw, 76px) 24px; color: #fff;
  min-height: clamp(330px, 42vw, 460px);
}
.hero.hero-tall { min-height: clamp(400px, 48vw, 540px); }
.hero.hero-gradient { background: linear-gradient(118deg, var(--c-primary) 0%, var(--c-secondary) 50%, var(--c-green) 100%); min-height: auto; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 35%; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(20,59,72,.93) 0%, rgba(31,110,126,.74) 46%, rgba(91,160,46,.24) 100%);
}
.hero-inner { max-width: 1120px; margin: 0 auto; position: relative; width: 100%; }
.eyebrow { font-weight: 700; font-size: 14px; letter-spacing: 2.5px; text-transform: uppercase; opacity: .92; margin-bottom: 14px; }
.hero h1 { font-weight: 800; font-size: clamp(32px, 4.8vw, 52px); line-height: 1.1; margin: 0 0 18px; }
.hero p { font-size: clamp(18px, 2.2vw, 21px); line-height: 1.55; opacity: .96; margin: 0; max-width: 660px; }

/* --- Secciones genéricas --- */
.section { padding: clamp(44px, 6vw, 72px) 24px; }
.section.soft { background: var(--c-soft); }
.section.white { background: #fff; }
.section h2 { font-weight: 700; font-size: clamp(24px, 3.4vw, 32px); margin: 0 0 16px; color: var(--c-heading); }
.lead { font-size: clamp(17px, 2vw, 19px); line-height: 1.7; color: #46585d; margin: 0 0 20px; max-width: 660px; }
.watermark {
  position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
  height: min(340px, 80%); opacity: .08; mix-blend-mode: multiply; pointer-events: none;
}

/* --- Tarjetas de contenido --- */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card {
  background: var(--c-soft); border-radius: 18px; padding: 28px;
  border-top: 5px solid var(--card-accent, var(--c-secondary));
}
.card h3 { font-weight: 700; font-size: 20px; margin: 0 0 9px; color: var(--c-text); }
.card p { font-size: 16px; line-height: 1.55; color: var(--c-muted); margin: 0; }

/* --- Bloque de dos columnas texto + imagen --- */
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; align-items: center; }
.split p { font-size: clamp(17px, 2vw, 19px); line-height: 1.7; color: #46585d; }
.split strong { color: var(--c-heading); }
.media-ph {
  height: 300px; border-radius: 20px; display: flex; align-items: center; justify-content: center;
  background: repeating-linear-gradient(45deg, #e6efe7, #e6efe7 11px, #dde8de 11px, #dde8de 22px);
  font-family: monospace; font-size: 12px; color: #9aa99c;
}

/* --- Banner destacado --- */
.banner { padding: clamp(44px, 5vw, 64px) 24px; background: linear-gradient(120deg, var(--c-primary), var(--c-secondary)); color: #fff; }
.banner-box { background: rgba(255,255,255,.1); border-radius: 20px; padding: clamp(28px, 4vw, 44px); max-width: 760px; }
.banner-box h2 { color: #fff; margin: 0 0 12px; font-size: clamp(22px, 3vw, 28px); }
.banner-box p { font-size: clamp(17px, 2vw, 19px); line-height: 1.65; margin: 0; opacity: .95; }

/* --- Rejilla de secciones (home) --- */
.sec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.sec-card {
  text-decoration: none; background: #fff; border-radius: 16px; padding: 26px;
  box-shadow: 0 3px 14px rgba(30,94,114,.07); border-top: 5px solid var(--card-accent); display: block;
}
.sec-card .num {
  width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 17px; color: #fff; margin-bottom: 16px;
  background: var(--card-accent);
}
.sec-card h3 { font-weight: 700; font-size: 20px; margin: 0 0 9px; color: var(--c-text); }
.sec-card p { font-size: 16px; line-height: 1.5; color: var(--c-muted); margin: 0; }

/* --- Rejilla de entradas del blog --- */
.posts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 26px; }
.post-card {
  text-decoration: none; display: block; background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 3px 16px rgba(30,94,114,.08); color: inherit;
}
.post-card:hover { box-shadow: 0 6px 22px rgba(30,94,114,.16); }
.post-card .thumb { width: 100%; height: 230px; display: block; object-fit: cover; object-position: center 30%; }
.post-card .body { padding: 22px; }
.cat-label { display: inline-block; font-weight: 700; font-size: 12px; letter-spacing: .7px; text-transform: uppercase; margin-bottom: 10px; }
.post-card h3 { font-weight: 700; font-size: 19px; line-height: 1.32; margin: 0 0 8px; color: var(--c-text); }
.post-card .excerpt { font-size: 15.5px; line-height: 1.5; color: var(--c-muted); margin: 0; }

/* --- Lista compacta de entradas (home / relacionadas) --- */
.latest-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); gap: 22px; }
.latest-item { text-decoration: none; display: flex; gap: 16px; align-items: flex-start; color: inherit; }
.latest-item.boxed { background: #fff; border-radius: 14px; padding: 16px; }
.latest-item img { width: 132px; height: 100px; border-radius: 12px; flex-shrink: 0; object-fit: cover; }
.latest-item.boxed img { width: 120px; height: 90px; border-radius: 10px; }
.latest-item h3 { font-weight: 600; font-size: 17px; line-height: 1.32; margin: 0; color: var(--c-text); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.section-head a { font-weight: 600; font-size: 16px; color: var(--c-green); text-decoration: none; }

/* --- Artículo individual --- */
.article { padding: clamp(32px, 5vw, 56px) 24px; }
.article-body { max-width: 760px; margin: 0 auto; }
.article-body img { border-radius: 14px; height: auto; display: inline-block; vertical-align: top; }
.article-body img + img, .legal-body img + img { margin-left: 14px; }
.article-body::after, .legal-body::after { content: ""; display: table; clear: both; }
.article-body img.img-left, .legal-body img.img-left { float: left; margin: 6px 20px 14px 0; }
.article-body img.img-right, .legal-body img.img-right { float: right; margin: 6px 0 14px 20px; }
.article-body img.img-center, .legal-body img.img-center { display: block; margin: 16px auto; }
@media (max-width: 560px) {
  .article-body img.img-left, .article-body img.img-right,
  .legal-body img.img-left, .legal-body img.img-right {
    float: none; display: block; width: 100% !important; margin: 14px 0;
  }
}
.article-body h2 { font-size: clamp(22px, 3vw, 28px); color: var(--c-heading); margin: 32px 0 12px; }
.article-body p { font-size: 18px; line-height: 1.75; color: #3c4b50; margin: 0 0 18px; }
.article-hero-img { width: 100%; max-height: 420px; object-fit: cover; border-radius: 16px; margin: 0 0 28px; }

/* Imágenes ampliables (lightbox) */
.article-body img.zoomable, .article-hero-img.zoomable, .legal-body img.zoomable { cursor: zoom-in; transition: filter .15s; }
.article-body img.zoomable:hover, .article-hero-img.zoomable:hover, .legal-body img.zoomable:hover { filter: brightness(.93); }
.la-lightbox {
  position: fixed; inset: 0; z-index: 1000; background: rgba(8,22,27,.93);
  display: none; align-items: center; justify-content: center; padding: 24px; cursor: zoom-out;
}
.la-lightbox.open { display: flex; }
.la-lightbox img { max-width: 92vw; max-height: 90vh; width: auto; height: auto; border-radius: 10px; box-shadow: 0 24px 70px rgba(0,0,0,.55); cursor: default; }
.la-lb-close {
  position: absolute; top: 14px; right: 18px; width: 46px; height: 46px; border: 0; border-radius: 50%;
  background: rgba(255,255,255,.16); color: #fff; font-size: 28px; line-height: 1; cursor: pointer;
}
.la-lb-close:hover { background: rgba(255,255,255,.32); }
@media (max-width: 600px) { .la-lightbox { padding: 12px; } .la-lb-close { top: 8px; right: 10px; } }
.meta { color: var(--c-muted); font-size: 15px; margin: 0 0 6px; }
.btn-back { display: inline-block; margin-top: 28px; color: var(--c-primary); font-weight: 600; text-decoration: none; }

/* --- Documentos legales --- */
.legal { padding: clamp(32px, 5vw, 56px) 24px; }
.legal-body { max-width: 800px; margin: 0 auto; }
.legal-body h2 { font-size: 22px; color: var(--c-heading); margin: 28px 0 10px; }
.legal-body p { font-size: 17px; line-height: 1.7; color: #3c4b50; margin: 0 0 14px; }

/* --- Pie de página --- */
.la-footer { background: var(--c-dark); color: #bcd3d6; font-family: var(--font-body), sans-serif; }
.la-footer .footer-grid { max-width: 1120px; margin: 0 auto; padding: 48px 24px 36px; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 34px; }
.la-footer .brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.la-footer .brand img { height: 66px; width: auto; }
.la-footer .brand span { font-family: var(--font-head); font-weight: 800; font-size: 20px; }
.la-footer .brand .b1 { color: #fff; }
.la-footer .brand .b2 { color: var(--c-lime); }
.la-footer p { font-size: 15.5px; line-height: 1.6; margin: 0; opacity: .85; max-width: 300px; }
.la-footer .col-title { font-family: var(--font-head); font-weight: 700; font-size: 15px; color: #fff; margin-bottom: 14px; letter-spacing: .5px; }
.la-footer .links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; font-size: 15.5px; }
.la-footer .links a { color: #bcd3d6; text-decoration: none; }
.la-footer .links a:hover { color: #fff; text-decoration: underline; }
.social-btn { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 16px; background: rgba(255,255,255,.1); padding: 12px 20px; border-radius: 30px; }
.social-btn svg { flex-shrink: 0; }
.social-btn.instagram { background: linear-gradient(45deg,#F58529 0%,#DD2A7B 45%,#8134AF 75%,#515BD4 100%); box-shadow: 0 6px 18px rgba(221,42,123,.35); }
.social-btn.instagram:hover { filter: brightness(1.06); transform: translateY(-1px); }

/* Banda de entidad colaboradora (logo de la universidad sobre fondo claro) */
.footer-partner { background: #fff; }
.footer-partner .inner { max-width: 1120px; margin: 0 auto; padding: 26px 24px; display: flex; align-items: center; justify-content: center; gap: 26px; flex-wrap: wrap; }
.footer-partner .partner-text { color: #46585d; font-size: 16px; font-weight: 600; letter-spacing: .3px; }
.footer-partner .partner-logos { display: flex; align-items: center; justify-content: center; gap: 32px; flex-wrap: wrap; }
.footer-partner img { height: 92px; width: auto; display: block; }
@media (max-width: 520px) {
  .footer-partner .inner { flex-direction: column; gap: 14px; }
  .footer-partner img { height: 72px; }
}
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); }
.footer-bottom .inner { max-width: 1120px; margin: 0 auto; padding: 18px 24px; font-size: 14px; opacity: .8; display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; }
.footer-bottom a { color: #bcd3d6; text-decoration: none; }
.footer-bottom a:hover { text-decoration: underline; }

/* --- Gestor de consentimiento de cookies --- */
.la-consent {
  position: fixed; inset: 0; z-index: 950;
  background: rgba(12,30,37,.55); display: flex; align-items: flex-end; justify-content: center;
  padding: 16px;
}
.la-consent[hidden] { display: none; }
.la-consent-box {
  background: #fff; color: var(--c-text); width: 100%; max-width: 720px;
  border-radius: 18px; box-shadow: 0 20px 60px rgba(12,30,37,.35);
  padding: clamp(22px, 3vw, 30px); max-height: 90vh; overflow: auto;
}
.la-consent-box h2 { font-family: var(--font-head); font-size: 21px; margin: 0 0 12px; color: var(--c-heading); }
.la-consent-box p { margin: 0 0 16px; font-size: 16px; line-height: 1.55; }
.la-consent-box a { color: var(--c-primary); font-weight: 600; }
.la-consent-prefs { border-top: 1px solid var(--c-soft); margin-bottom: 16px; }
.la-consent-cat {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid #eef3f1;
}
.la-consent-cat strong { display: block; font-size: 16px; }
.la-consent-cat span { color: var(--c-muted); font-size: 14px; line-height: 1.4; }
.la-consent-cat .la-always { color: var(--c-green); font-weight: 700; font-size: 14px; white-space: nowrap; }
.la-consent-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.la-consent-actions .btn { flex: 0 1 auto; }

/* Interruptor (switch) accesible */
.la-switch { position: relative; display: inline-block; width: 50px; height: 28px; flex-shrink: 0; cursor: pointer; }
.la-switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.la-switch span { position: absolute; inset: 0; background: #c9d6d3; border-radius: 28px; transition: background .2s; }
.la-switch span::before { content: ""; position: absolute; left: 3px; top: 3px; width: 22px; height: 22px; background: #fff; border-radius: 50%; transition: transform .2s; box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.la-switch input:checked + span { background: var(--c-green); }
.la-switch input:checked + span::before { transform: translateX(22px); }
.la-switch input:focus-visible + span { outline: 3px solid var(--c-yellow); outline-offset: 2px; }

@media (max-width: 560px) {
  .la-consent { align-items: stretch; }
  .la-consent-actions { justify-content: stretch; }
  .la-consent-actions .btn { flex: 1 1 100%; }
}
.btn {
  font-family: var(--font-body), sans-serif; font-weight: 700; font-size: 15px; cursor: pointer;
  border: 0; border-radius: 30px; padding: 12px 22px; text-decoration: none; display: inline-block;
}
.btn-primary { background: var(--c-green); color: #fff; }
.btn-ghost { background: #eef4f3; color: var(--c-text); }

@media (max-width: 600px) {
  .footer-bottom .inner { flex-direction: column; }
}