:root {
  --bg: #fafaf7;
  --fg: #1c1b18;
  --muted: #6c685f;
  --accent: #8c2f1b;
  --accent-bg: #f7e7d8;
  --rule: #d8d3c4;
  --warn: #b34a14;
  --ok: #316b3a;
  --kbd: #e8e3d4;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: ui-serif, "Iowan Old Style", "Source Serif Pro", Georgia, serif;
  line-height: 1.5;
}
header {
  border-bottom: 1px solid var(--rule);
  background: #fff;
}
.bar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.6rem 1.2rem;
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
}
.brand {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--fg);
  text-decoration: none;
}
nav a {
  margin-right: 1rem;
  color: var(--muted);
  text-decoration: none;
}
nav a:hover { color: var(--accent); }

main {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1.2rem;
}
footer {
  max-width: 1100px;
  margin: 3rem auto 1.5rem;
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
  align-items: center;
}
.filters input[type=search],
.filters select,
.filters button {
  padding: 0.4rem 0.6rem;
  font: inherit;
  border: 1px solid var(--rule);
  background: #fff;
  border-radius: 3px;
}
.filters input[type=search] { flex: 1 1 240px; }
.filters button {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  cursor: pointer;
}
.filters .reset {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.count { color: var(--muted); margin: 0.5rem 0 1rem; }

.records {
  list-style: none;
  margin: 0;
  padding: 0;
}
.records li {
  border-bottom: 1px solid var(--rule);
  padding: 0.7rem 0;
}
.records .title {
  display: block;
  color: var(--fg);
  font-weight: 600;
  text-decoration: none;
  font-size: 1.05rem;
}
.records .title:hover { color: var(--accent); }
.records .meta,
.records .authors {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 0.2rem;
}
.records .meta span { margin-right: 0.3rem; }
.records .meta .journal { font-style: italic; }
.records .meta .doi { font-family: ui-monospace, monospace; font-size: 0.82rem; }

.status {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  font-size: 0.78rem;
  background: var(--kbd);
  color: var(--fg);
}
.status-downloaded { background: #d6e8d8; color: var(--ok); }
.status-failed     { background: #f4d8c5; color: var(--warn); }
.status-paywalled  { background: #ece9dd; color: var(--muted); }
.status-pending    { background: #ece9dd; color: var(--muted); }

.badge.oa {
  display: inline-block;
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  background: var(--accent-bg);
  color: var(--accent);
}

.pagination {
  margin: 1.5rem 0;
  display: flex;
  gap: 1rem;
  align-items: baseline;
  color: var(--muted);
}

.detail h1 {
  margin: 0.5rem 0 0.2rem;
  font-size: 1.6rem;
}
.detail .byline { color: var(--muted); margin-top: 0; }
.detail h2 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--accent);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.2rem;
}
table.bibliographic {
  border-collapse: collapse;
  width: 100%;
}
table.bibliographic th {
  text-align: left;
  width: 12rem;
  vertical-align: top;
  color: var(--muted);
  font-weight: 400;
  padding: 0.25rem 0.5rem 0.25rem 0;
}
table.bibliographic td {
  padding: 0.25rem 0;
  vertical-align: top;
}

table.urls {
  width: 100%;
  font-size: 0.88rem;
  border-collapse: collapse;
}
table.urls th, table.urls td {
  padding: 0.3rem 0.4rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  text-align: left;
}

ul.terms { list-style: none; padding: 0; margin: 0; }
ul.terms li {
  display: inline-block;
  margin: 0.2rem 0.4rem 0.2rem 0;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  font-size: 0.85rem;
}
.tier-label {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.7rem;
  padding: 0 0.3rem;
  border-radius: 2px;
  margin-right: 0.3rem;
  letter-spacing: 0.05em;
}

.pdf-preview {
  width: 100%;
  height: 80vh;
  border: 1px solid var(--rule);
  background: #fff;
}
a.pdf-link {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.3rem 0.8rem;
  text-decoration: none;
  border-radius: 3px;
}

/* Dashboard */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin: 1rem 0 2rem;
}
.kpi {
  background: #fff;
  border: 1px solid var(--rule);
  padding: 0.8rem 1rem;
  border-radius: 4px;
}
.kpi .n {
  font-size: 1.6rem;
  font-weight: 600;
  font-feature-settings: "tnum";
}
.kpi .l {
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.kpi.warn .n { color: var(--warn); }
.kpi.mute .n { color: var(--muted); }

table.bars {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}
table.bars th, table.bars td {
  padding: 0.2rem 0.5rem;
  vertical-align: middle;
  font-weight: 400;
}
table.bars th {
  text-align: right;
  width: 9rem;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
table.bars .n {
  text-align: right;
  width: 4rem;
  font-feature-settings: "tnum";
  color: var(--muted);
}
table.bars .bar {
  display: block;
  height: 0.7rem;
  margin: 0;
  background: var(--accent);
  border-radius: 2px;
  min-width: 2px;
}

code { font-family: ui-monospace, monospace; font-size: 0.85em; }