.site-header nav, .site-footer .container { max-width: 1000px; margin: 0 auto; padding: .5rem 1rem; }

.skip-link {
  position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { position: static; width: auto; height: auto; padding: .5rem 1rem; background: #fde68a; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}

.alert { padding: .5rem .75rem; border-radius: .375rem; margin: .5rem 0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #dcfce7; color: #14532d; border: 1px solid #bbf7d0; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; padding: 0; margin: 0; }
.cards > .card { list-style: none; }
.card article { border: 1px solid var(--border); border-radius: .75rem; padding: 1rem; background: #fff; height: 100%; display: flex; flex-direction: column; gap: .5rem; }
.card .meta { color: var(--muted); font-size: .95rem; }

.pagination { display: flex; gap: .5rem; padding: 0; }
.pagination li { list-style: none; }
.pagination a, .pagination strong { display: inline-block; padding: .5rem .75rem; border: 1px solid var(--border); border-radius: .5rem; text-decoration: none; color: inherit; font-size: 1rem; min-height: 44px; }

.footer-links { display: flex; gap: 1rem; list-style: none; padding: 0; }
footer-links a { text-decoration: none; }

/* Horizontal scroll row for chips */
.scroll-row { display: flex; gap: .5rem; overflow-x: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; padding: .25rem 0 .5rem; list-style: none; margin: 0; }
.scroll-row > li { flex: 0 0 auto; }
.scroll-row::-webkit-scrollbar { height: 8px; }
.scroll-row::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* Category chip */
.chip { display: inline-block; padding: .5rem .75rem; border-radius: 999px; border: 1px solid var(--border); background: #fff; color: inherit; text-decoration: none; white-space: nowrap; }
.chip:hover { background: #f3f4f6; }
.chip:focus-visible { outline: 2px solid #2563eb; outline-offset: 2px; }

/* Mobile-first filters stack */
.filters .flex { flex-direction: column; align-items: stretch; }
.filters .form-field, .filters input, .filters select, .filters button { width: 100%; }

/* Responsive enhancements */
@media (min-width: 640px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}
@media (min-width: 768px) {
  .container { padding-left: 1.25rem; padding-right: 1.25rem; }
  .filters .flex { flex-direction: row; align-items: center; }
  .filters .form-field, .filters input, .filters select, .filters button { width: auto; }
}