:root { --card: #f6f7f9; --line: rgba(127,127,127,.28); }
@media (prefers-color-scheme: dark) { :root { --card: #1e2128; } }

main.wide { max-width: 72rem; padding-top: 2.5rem; }
.back { display: inline-block; margin-bottom: 1.5rem; color: var(--muted); text-decoration: none; }
.back:hover { color: var(--accent); }

.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; margin-bottom: .75rem; }
.hero .lead { max-width: 42rem; margin: 0 0 1rem; }
.meta { color: var(--muted); font-size: .95rem; margin: 0; }

.toolbar { position: static; top: 0; z-index: 5; background: var(--bg); padding: 1rem 0 .75rem; margin-top: 1.5rem; border-bottom: 1px solid var(--line); }
.search { width: 100%; padding: .7rem 1rem; font: inherit; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.chip { font: inherit; font-size: .9rem; padding: .3rem .8rem; color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.count { margin: .75rem 0 0; color: var(--muted); font-size: .9rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1rem; margin: 1.5rem 0 2rem; }
.card { display: flex; flex-direction: column; gap: .5rem; padding: 1.1rem 1.1rem 1rem; background: var(--card); border: 1px solid var(--line); border-radius: 12px; color: inherit; text-decoration: none; transition: transform .15s, border-color .15s; }
.card:hover, .card:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
.card[hidden] { display: none; }
.card h2 { margin: 0; font-size: 1.1rem; color: var(--fg); display: flex; justify-content: space-between; gap: .5rem; align-items: baseline; }
.card h2 .go { color: var(--accent); font-weight: 400; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; line-height: 1.5; flex: 1; }
.tags { display: flex; gap: .4rem; flex-wrap: wrap; font-size: .78rem; }
.tag { padding: .1rem .5rem; border-radius: 6px; background: rgba(127,127,127,.15); color: var(--muted); }
.tag.cat { color: var(--accent); background: rgba(193,95,60,.12); }

.empty { text-align: center; color: var(--muted); padding: 3rem 0; }
.sources { color: var(--muted); font-size: .9rem; border-top: 1px solid var(--line); padding-top: 1rem; }

@media (max-width: 30rem) { main.wide { padding-top: 1.5rem; } .grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .card { transition: none; } .card:hover { transform: none; } }
@media (min-width: 48rem) { .toolbar { position: sticky; } }