* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  color: #222;
  background: #fafafa;
}

header {
  background: #1a2b4a;
  color: #fff;
  padding: 1rem 2rem;
}
header h1 { margin: 0; font-size: 1.4rem; }
header h1 a { color: #fff; text-decoration: none; }
header .tagline { margin: 0.25rem 0 0; opacity: 0.85; font-size: 0.9rem; }

main { max-width: 960px; margin: 2rem auto; padding: 0 1rem; }

footer {
  max-width: 960px;
  margin: 2rem auto 1rem;
  padding: 0 1rem;
  color: #666;
  font-size: 0.85rem;
}

.filter {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.filter .row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 0.5rem;
}
.filter label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: #444;
}
.filter input, .filter select {
  padding: 0.35rem 0.5rem;
  border: 1px solid #ccc;
  border-radius: 3px;
  font-size: 0.9rem;
  min-width: 180px;
}
.filter button {
  background: #1a2b4a;
  color: #fff;
  padding: 0.45rem 0.9rem;
  border: none;
  border-radius: 3px;
  cursor: pointer;
}
.filter .reset {
  padding: 0.45rem 0.9rem;
  color: #666;
  text-decoration: none;
}

.summary { color: #555; margin: 0.5rem 0 1rem; }
.error { color: #b00; }

.papers { list-style: none; padding: 0; margin: 0; }
.paper {
  background: #fff;
  border: 1px solid #e3e3e3;
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}
.paper h2 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.paper h2 a { color: #1a2b4a; text-decoration: none; }
.paper h2 a:hover { text-decoration: underline; }
.paper .meta { margin: 0 0 0.35rem; font-size: 0.8rem; color: #666; display: flex; gap: 0.75rem; flex-wrap: wrap; }
.paper .meta .cat { color: #1a2b4a; font-weight: 600; }
.paper .pdf-badge {
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.paper .pdf-badge.local { background: #d8f0d8; color: #1a5a1a; }
.paper .pdf-badge.remote { background: #f0e6d8; color: #8a5a1a; }
.paper .authors { margin: 0 0 0.5rem; font-size: 0.9rem; color: #333; }
.paper .abstract { margin: 0 0 0.5rem; font-size: 0.9rem; color: #444; }
.paper .abstract b { background: #ffe88a; padding: 0 0.15rem; border-radius: 2px; }
.paper .links { margin: 0; font-size: 0.85rem; }

.pager {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin: 1.5rem 0;
}
.pager a {
  padding: 0.4rem 0.9rem;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 3px;
  text-decoration: none;
  color: #1a2b4a;
}
.pager span { padding: 0.4rem 0.9rem; color: #555; }

.empty { color: #888; font-style: italic; padding: 1rem; }