/* ============================================================
   responsive.css — Mobile-first adjustments
   Breakpoints: 640px (mobile/tablet), 980px (tablet/desktop)
   ============================================================ */

/* -------------------- Hasta 979px: comportamiento tablet/mobile -------------------- */
@media (max-width: 979px) {
  .featured-grid { grid-template-columns: 1fr; }
  .latest-layout { grid-template-columns: 1fr; }
  .latest-sidebar { order: -1; }
  .most-read-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 16px; }
  .trending-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: 1fr; }
}

/* -------------------- Hasta 639px: mobile -------------------- */
@media (max-width: 639px) {
  body { font-size: 15px; }

  .header-date { display: none; }
  .header-top-right { gap: 8px; }
  .social-icons--sm { display: none; }
  .menu-btn { display: inline-flex; }

  .nav-trending-link { display: none !important; }
  .nav-list { padding: 0 4px; }
  .nav-list a { padding: 10px 10px; font-size: 0.8rem; }

  .trending-inner { padding: 8px 12px; }
  .trending-label { font-size: 0.68rem; }

  .card--main .card-title { font-size: 1.3rem; }
  .card--main .card-excerpt { font-size: 0.95rem; }

  .card--side { flex-direction: row; }
  .card--side .card-img-link { width: 96px; }

  .latest-grid { grid-template-columns: 1fr; }
  .card--list .card-img-link { width: 100px; }
  .card--list .card-title--sm { font-size: 0.92rem; }

  .trending-grid { grid-template-columns: 1fr; }

  .most-read-list { grid-template-columns: 1fr; }

  .article-header h1 { font-size: 1.5rem; }
  .article-excerpt { font-size: 1rem; }
  .article-body { font-size: 1rem; }

  .author-box { flex-direction: column; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  /* Evitar scroll horizontal accidental */
  html, body { max-width: 100%; overflow-x: hidden; }
}

/* -------------------- Footer grid -------------------- */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 24px;
  padding: 36px 16px 24px;
}
.footer-col h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 10px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.footer-col a { color: var(--color-gray-muted); font-size: 0.88rem; }
.footer-col a:hover { color: var(--color-accent); }
.footer-brand p { color: var(--color-gray-muted); font-size: 0.85rem; max-width: 320px; margin: 8px 0 14px; }
.site-footer { background: var(--color-gray-light); border-top: 1px solid var(--color-gray-border); margin-top: 20px; }
.footer-bottom { border-top: 1px solid var(--color-gray-border); padding: 14px 16px; }
.footer-bottom .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px; }
.footer-bottom p { margin: 0; font-size: 0.78rem; color: var(--color-gray-muted); }

@media (max-width: 639px) {
  .footer-grid { grid-template-columns: 1fr 1fr; padding: 28px 16px 18px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* -------------------- Menú mobile colapsable -------------------- */
@media (max-width: 639px) {
  .main-nav { display: none; }
  .main-nav.is-open { display: block; }
}