:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --accent: #c2410c;
  --border: #e5e7eb;
  --chip: #eef0f3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #181b21;
    --text: #e8eaed;
    --muted: #9aa0a8;
    --accent: #fb923c;
    --border: #2a2e36;
    --chip: #232730;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  max-width: 720px;
  margin: 0 auto;
  padding-bottom: env(safe-area-inset-bottom);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(12px + env(safe-area-inset-top)) 16px 10px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
.topbar h1 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.logo { color: var(--accent); }

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  cursor: pointer;
}
.icon-btn:active { transform: rotate(90deg); }
.icon-btn.spinning { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 16px 10px;
  scrollbar-width: none;
  position: sticky;
  top: 58px;
  background: var(--bg);
  z-index: 10;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
}
.tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.topicbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 16px 10px;
  scrollbar-width: none;
}
.topicbar::-webkit-scrollbar { display: none; }

.topic-badge {
  display: inline-block;
  background: var(--chip);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 2px 8px;
  border-radius: 999px;
  margin-right: 6px;
  margin-top: 6px;
}
.score-badge {
  background: var(--accent);
  color: #fff;
}

.searchbar { padding: 0 16px 6px; display: flex; align-items: center; gap: 10px; }
#searchInput {
  flex: 1;
  padding: 10px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  outline: none;
}
#searchInput:focus { border-color: var(--accent); }

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  padding: 4px;
}

.archivebar {
  margin: 0 16px 12px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.archivebar-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.archivebar-row.chips { gap: 8px; }
.chip {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.archivebar-row label {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.archivebar-row input[type="date"] {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 0.85rem;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.archive-stats { font-size: 0.78rem; color: var(--muted); }

.feed { padding: 0 16px; display: flex; flex-direction: column; gap: 12px; }

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  text-decoration: none;
  color: inherit;
}
.card:active { opacity: 0.7; }

.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.75rem;
}
.source {
  background: var(--chip);
  color: var(--accent);
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
}
.time { color: var(--muted); }

.card h2 { font-size: 1rem; font-weight: 650; line-height: 1.35; }
.card p {
  margin-top: 6px;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-with-img { display: grid; grid-template-columns: 1fr 92px; gap: 12px; }
.thumb {
  width: 92px;
  height: 92px;
  object-fit: cover;
  border-radius: 10px;
  background: var(--chip);
}

.status {
  text-align: center;
  color: var(--muted);
  padding: 48px 16px;
  font-size: 0.95rem;
}

.foot {
  text-align: center;
  color: var(--muted);
  font-size: 0.75rem;
  padding: 18px 16px 28px;
}