:root {
  --bg: #0b0d10;
  --bg-elev: #14181d;
  --bg-elev-2: #1c2128;
  --border: #2a313a;
  --border-soft: #1f242b;
  --fg: #e6edf3;
  --fg-dim: #9aa4b2;
  --muted: #6f7a89;
  --accent: #6ad0ff;
  --accent-2: #7ce38b;
  --warn: #f0c674;
  --bad: #ff6b6b;
  --good: #5fdc92;
  --added-bg: rgba(95, 220, 146, 0.18);
  --added-fg: #b6f1cb;
  --removed-bg: rgba(255, 107, 107, 0.18);
  --removed-fg: #ffc4c4;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.brand h1 {
  font-family: var(--font-mono);
  font-size: 20px;
  margin: 0;
  letter-spacing: -0.5px;
}
.brand .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 12px var(--good);
}
.tagline {
  color: var(--fg-dim);
  font-size: 13px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  background: var(--accent);
  color: #04121b;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.ghost {
  background: transparent;
  color: var(--fg-dim);
  border: 1px solid var(--border);
}
.btn.ghost:hover { color: var(--fg); border-color: var(--accent); }

.muted { color: var(--muted); }
.small { font-size: 12px; }

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 0 16px;
}
.tab {
  background: transparent;
  color: var(--fg-dim);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  letter-spacing: 0.5px;
}
.tab:hover { color: var(--fg); }
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.panel-header h2 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
}
.filters { display: flex; gap: 8px; flex-wrap: wrap; }

select, input[type="text"] {
  background: var(--bg-elev);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 7px 10px;
  font-family: var(--font-sans);
  font-size: 13px;
}
select:focus, input:focus { outline: none; border-color: var(--accent); }

/* ---- Stats strip ---- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}
.stat-card {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 14px 16px;
}
.stat-card .label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.stat-card .value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  margin-top: 4px;
  color: var(--fg);
}
.stat-card .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ---- Changes list ---- */
.changes-list { display: flex; flex-direction: column; gap: 10px; }
.change-week {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 14px;
  margin-bottom: 6px;
  border-bottom: 1px dashed var(--border-soft);
  padding-bottom: 4px;
}
.change-card {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  transition: border-color 0.1s;
}
.change-card:hover { border-color: var(--accent); }
.change-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.change-vendor {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}
.change-doc { color: var(--fg-dim); font-size: 13px; }
.change-when { color: var(--muted); font-size: 12px; }
.change-deltas {
  display: flex; gap: 10px; font-family: var(--font-mono); font-size: 12px;
}
.change-deltas .add { color: var(--good); }
.change-deltas .rem { color: var(--bad); }
.change-summary { color: var(--fg-dim); font-size: 13px; }
.empty { padding: 30px; text-align: center; color: var(--muted); }

/* ---- Catalog table ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border-soft); border-radius: 8px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  vertical-align: middle;
}
th {
  background: var(--bg-elev);
  color: var(--fg-dim);
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}
th:hover { color: var(--accent); }
tbody tr:hover { background: var(--bg-elev); }

.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: inline-block;
}
.badge.ok { background: rgba(95, 220, 146, 0.12); color: var(--good); border-color: rgba(95, 220, 146, 0.3); }
.badge.pending { background: rgba(240, 198, 116, 0.12); color: var(--warn); border-color: rgba(240, 198, 116, 0.3); }
.badge.broken { background: rgba(255, 107, 107, 0.12); color: var(--bad); border-color: rgba(255, 107, 107, 0.3); }
.badge.unsupported { background: rgba(106, 208, 255, 0.08); color: var(--accent); border-color: rgba(106, 208, 255, 0.25); }

td a.row-action {
  color: var(--accent);
  font-size: 12px;
  margin-right: 8px;
}

/* ---- Document viewer ---- */
.doc-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 18px;
}
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
}
.doc-main {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 16px;
  min-height: 400px;
}
.doc-sidebar {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 16px;
  max-height: 720px;
  overflow-y: auto;
}
.doc-sidebar h3 {
  margin: 0 0 10px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.doc-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 10px;
  margin-bottom: 10px;
}
.doc-diff-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--muted);
}
.doc-body {
  white-space: pre-wrap;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg);
  word-wrap: break-word;
  max-height: 600px;
  overflow-y: auto;
  padding-right: 8px;
}
.doc-body .added {
  background: var(--added-bg);
  color: var(--added-fg);
  padding: 1px 2px;
  border-radius: 2px;
}
.doc-body .removed {
  background: var(--removed-bg);
  color: var(--removed-fg);
  padding: 1px 2px;
  border-radius: 2px;
  text-decoration: line-through;
}
.doc-body .skip {
  color: var(--muted);
  font-style: italic;
}

.version-list { list-style: none; margin: 0; padding: 0; }
.version-list li {
  padding: 8px 10px;
  border-bottom: 1px dashed var(--border-soft);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.version-list li:hover { background: var(--bg-elev-2); }
.version-list li.active {
  background: rgba(106, 208, 255, 0.08);
  border-left: 2px solid var(--accent);
}
.version-date { font-family: var(--font-mono); font-size: 12px; color: var(--fg); }
.version-meta { font-size: 11px; color: var(--muted); }

/* ---- About ---- */
.about { max-width: 720px; }
.about h2 { font-family: var(--font-mono); font-size: 20px; }
.about h3 { font-family: var(--font-mono); font-size: 14px; margin-top: 24px; color: var(--accent); }
.about p { color: var(--fg-dim); }
.about ul { color: var(--fg-dim); padding-left: 18px; }

/* ---- Footer ---- */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  margin-top: 40px;
  flex-wrap: wrap;
  gap: 8px;
}