:root {
  --fg: #1a1a1a;
  --muted: #666;
  --border: #d8d8d8;
  --accent: #1f4e8c;
  --bg: #fafafa;
  --card: #fff;
  --warn: #a04a00;
  --err: #b12a2a;
  --ok: #246c2a;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  margin: 0;
  line-height: 1.5;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem; }

header {
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
header .wrap { display: flex; align-items: center; gap: 0.9rem; padding: 1rem 1.5rem; }
header h1 { margin: 0; font-size: 1.3rem; }
header h1 a { color: inherit; text-decoration: none; }
header h1 a:hover { color: var(--accent); }
header nav { margin-left: auto; display: flex; gap: 1rem; align-items: center; }
header a { color: var(--accent); text-decoration: none; font-weight: 500; }
header a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; }
h2 { border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; margin-top: 2rem; }

code, .mono {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.ran {
  display: inline-block;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  padding: 0.1rem 0.4rem;
  background: #eef3f8;
  border-radius: 3px;
  color: var(--accent);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
}
th, td { padding: 0.55rem 0.7rem; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #f2f2f2; font-weight: 600; }
tbody tr:hover { background: #f7f7f7; cursor: pointer; }
tbody tr:last-child td { border-bottom: none; }

form label { display: block; margin-top: 0.9rem; font-weight: 500; }
form input[type=text],
form input[type=number],
form input[type=email],
form textarea {
  width: 100%;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: inherit;
  font-size: 1rem;
}
form textarea { min-height: 4rem; font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 0.92rem; }

button, .btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
}
button.secondary { background: #666; }
button.danger { background: var(--err); }
button:hover { opacity: 0.9; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}

.muted { color: var(--muted); font-size: 0.9em; }
.error { color: var(--err); }
.ok { color: var(--ok); }
.warn { color: var(--warn); }

.pair-row {
  display: grid;
  grid-template-columns: 6rem 5rem 1fr auto;
  gap: 0.5rem;
  margin: 0.4rem 0;
  align-items: center;
}
.pair-row input { padding: 0.35rem 0.45rem; }

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 8px;
  background: #eee;
  font-size: 0.8em;
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

.controls {
  display: flex;
  gap: 0.6rem;
  margin: 0.8rem 0 1rem;
  align-items: center;
  flex-wrap: wrap;
}
.controls input[type=search], .controls select {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--card);
}
.controls input[type=search] { flex: 1 1 14rem; min-width: 12rem; }
#count { margin-left: auto; }

th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { background: #e8e8e8; }
th .sort-ind { display: inline-block; width: 0.9em; color: var(--muted); font-size: 0.85em; }
th.sort-active .sort-ind { color: var(--fg); }

pre {
  background: #f4f4f4;
  padding: 0.6rem 0.8rem;
  border-radius: 3px;
  overflow-x: auto;
  font-size: 0.85em;
}

.rev-line {
  display: grid;
  grid-template-columns: 4.5rem 1fr 1fr;
  gap: 0.4rem 0.8rem;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 0.3rem 0;
  border-bottom: 1px dotted var(--border);
}
.rev-line.skipped { color: var(--muted); }

.submission { scroll-margin-top: 1rem; transition: box-shadow 0.2s; }
.submission.highlighted { box-shadow: 0 0 0 2px var(--accent); }
.submission-head { display: flex; align-items: baseline; gap: 0.8rem; margin: 0 0 0.5rem; }
.submission-title { display: inline-flex; align-items: baseline; gap: 0.4rem; font-weight: 600; }
.submission-title .anchor { color: var(--accent); font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 0.95em; text-decoration: none; }
.submission-title .anchor:hover { text-decoration: underline; }
.submission-date { margin-left: auto; font-size: 0.85em; }

.submission.invalidated .submission-title,
.submission.invalidated .sub-label,
.submission.invalidated .rev-line > span:nth-child(2) {
  text-decoration: line-through;
}
.submission.invalidated { opacity: 0.85; }
.submission.invalidated .inv-icon { text-decoration: none; display: inline-block; }
.submission.invalidated .review-line { text-decoration: none; }

.inv-icon {
  color: var(--err);
  text-decoration: none;
  font-size: 1.1em;
  cursor: help;
  margin-left: 0.1rem;
}
.inv-icon:hover { opacity: 0.8; }

.sub-label { margin: 0.8rem 0 0.3rem; font-size: 0.88em; font-weight: 600; }
.sub-label.muted { font-weight: 500; }
.action-row { margin-top: 0.6rem; font-size: 0.88em; }
.review-line { margin-top: 0.6rem; font-size: 0.88em; }

.badge-update { background: #dfe8f2; color: var(--accent); }
.badge-invalidation { background: #f5d9d9; color: var(--err); }
.badge-status-approved { background: #dcecd8; color: var(--ok); }
.badge-status-pending { background: #f4e8c1; color: var(--warn); }
.badge-status-rejected { background: #eee; color: var(--muted); }

.kind-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.kind-tabs label {
  margin: 0;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  border-radius: 3px 3px 0 0;
  border: 1px solid transparent;
  font-weight: 500;
}
.kind-tabs input[type=radio] { display: none; }
.kind-tabs label:has(input:checked) {
  background: var(--card);
  border-color: var(--border);
  border-bottom-color: var(--card);
  color: var(--accent);
  margin-bottom: -1px;
}