:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #fff;
  --ink: #1b2533;
  --muted: #66758a;
  --line: #dce2ea;
  --blue: #2364d8;
  --green: #178349;
  --amber: #9b5a00;
  --red: #b42318;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.35;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 2px; font-size: 18px; letter-spacing: 0; }
h2 { font-size: 14px; letter-spacing: 0; }
h3 { font-size: 13px; letter-spacing: 0; }

button, select {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 8px 10px;
}

button {
  cursor: pointer;
  color: var(--blue);
  font-weight: 650;
}

main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 20px 28px;
}

.session, .toolbar, .tabs, .links {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.toolbar {
  margin-bottom: 16px;
}

.tabs button.active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.panel, .metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.panel {
  padding: 14px;
  margin-bottom: 16px;
  overflow: hidden;
}

.panel.danger {
  border-color: #f2b8b5;
  background: #fff8f7;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.metric {
  min-height: 78px;
  padding: 12px;
}

.metric .label, .muted {
  color: var(--muted);
}

.metric .value {
  margin-top: 6px;
  font-size: 24px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
}

.scroll-panel {
  max-height: 68vh;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 8px 7px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #fafbfc;
  color: var(--muted);
  font-size: 12px;
}

tr:last-child td { border-bottom: 0; }
a { color: var(--blue); text-decoration: none; font-weight: 620; }
.link-button {
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--blue);
}
.row-title { font-weight: 650; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
.story-row { cursor: pointer; }
.story-row:hover td { background: #f7faff; }

.status {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: #eef2f7;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.ok { background: #e8f5ee; color: var(--green); }
.warn { background: #fff3df; color: var(--amber); }
.bad { background: #ffe9e7; color: var(--red); }
.blue { background: #eaf1ff; color: var(--blue); }

.diff-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.diff-item, .detail-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fafbfc;
}

.diff-before { color: var(--red); margin-bottom: 6px; }
.diff-after { color: var(--green); }

.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  justify-content: flex-end;
  background: rgba(15, 23, 42, .38);
}

.modal[hidden], [hidden] { display: none !important; }

.modal-panel {
  width: min(920px, 100%);
  height: 100%;
  background: var(--panel);
  box-shadow: -18px 0 36px rgba(15, 23, 42, .18);
  display: flex;
  flex-direction: column;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.modal-body {
  padding: 16px;
  overflow: auto;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr);
  gap: 14px;
}

.detail-box {
  margin-top: 10px;
}

@media (max-width: 820px) {
  .topbar, .toolbar, .session { align-items: stretch; flex-direction: column; }
  .metrics, .split, .detail-grid { grid-template-columns: 1fr; }
  select { width: 100%; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; }
  .tabs button { white-space: nowrap; }
}