:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --border: #dcdcdc;
  --accent: #2b5d8f;
  --chip-bg: #eef2f7;
  --chip-fg: #2b5d8f;
  --chip-bg-alt: #f2eee7;
  --chip-fg-alt: #8f5d2b;
  --card-bg: #fafafa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8e8e8;
    --muted: #a0a0a0;
    --border: #33363c;
    --accent: #7fb0e8;
    --chip-bg: #1f2a38;
    --chip-fg: #7fb0e8;
    --chip-bg-alt: #302a1f;
    --chip-fg-alt: #e8b07f;
    --card-bg: #1a1d22;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0 auto;
  max-width: 920px;
  padding: 2rem 1.25rem 4rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

header h1 {
  font-size: 1.9rem;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 0;
}

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

.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
  margin: 1.25rem 0;
}

.stats-bar strong {
  color: var(--fg);
  font-size: 1.05rem;
}

.caveat {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  color: var(--muted);
  margin: 1.25rem 0;
}

.caveat strong {
  color: var(--fg);
}

.caveat-details {
  margin: 1.25rem 0;
}

.caveat-details summary {
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.caveat-details summary:hover {
  color: var(--accent);
}

.journals-legend {
  margin: 1.25rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  padding: 0.9rem 1.1rem;
}

.journals-legend summary {
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg);
}

.journals-legend summary:hover {
  color: var(--accent);
}

.journals-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.3rem 1.2rem;
  margin-top: 0.9rem;
  font-size: 0.85rem;
}

.journal-entry strong {
  color: var(--accent);
  margin-right: 0.35rem;
}

.journal-entry {
  color: var(--muted);
}

.controls {
  margin: 1.5rem 0;
}

.search-wrap {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

#search-box {
  width: 100%;
  padding: 0.85rem 1.1rem 0.85rem 2.7rem;
  font-size: 1.05rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--fg);
  box-shadow: 0 1px 3px color-mix(in srgb, var(--fg) 8%, transparent);
}

#search-box::placeholder {
  color: var(--muted);
}

#search-box:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}

#search-box:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.control-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

#sort-select {
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.85rem;
}

.year-input {
  width: 5.5rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.85rem;
}

.clear-filters-btn {
  margin-left: auto;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.8rem;
  cursor: pointer;
}

.clear-filters-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.load-more-btn {
  display: block;
  width: 100%;
  margin: 0.5rem 0 1.5rem;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--accent);
  font-size: 0.9rem;
  cursor: pointer;
}

.load-more-btn:hover {
  border-color: var(--accent);
}

.loading-state,
.error-state {
  color: var(--muted);
  padding: 2rem 0;
  text-align: center;
}

.error-state a {
  color: var(--accent);
}

.facets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.facet-group h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin: 0 0 0.4rem;
}

.facet-options {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.35rem;
  max-height: 9rem;
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
}

.facet-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.8rem;
  cursor: pointer;
  user-select: none;
  color: var(--muted);
  background: var(--bg);
}

.facet-chip input {
  margin: 0;
}

.facet-chip.active {
  background: var(--chip-bg);
  color: var(--chip-fg);
  border-color: var(--chip-fg);
}

.meta-bar {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}

.result-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin-bottom: 0.9rem;
  background: var(--card-bg);
}

.result-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.result-card h3 a {
  color: var(--fg);
  text-decoration: none;
}

.result-card h3 a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.result-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.result-desc {
  font-size: 0.92rem;
  color: var(--fg);
  margin: 0.4rem 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.tag-chip {
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--chip-fg);
}

.tag-chip.data-type {
  background: var(--chip-bg-alt);
  color: var(--chip-fg-alt);
}

.result-doi {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
  text-decoration: none;
}

.result-doi:hover {
  color: var(--accent);
  text-decoration: underline;
}

footer {
  margin-top: 3rem;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.maintainer-card {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
  padding: 1.1rem 1.3rem;
  margin-top: 1rem;
}

.maintainer-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.maintainer-name {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
}

.maintainer-role {
  margin: 0 0 0.7rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.4;
}

.maintainer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.maintainer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
  color: var(--fg);
  text-decoration: none;
  background: var(--bg);
}

.maintainer-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.footer-note {
  margin: 0;
}

@media (max-width: 480px) {
  .maintainer-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .maintainer-links {
    justify-content: center;
  }
}

.empty-state {
  color: var(--muted);
  padding: 2rem 0;
  text-align: center;
}