:root {
  --bg: #f8f8f6;
  --bg-inset: #f0f0ed;
  --surface: #ffffff;
  --text: #1c1c1a;
  --text-2: #4a4a46;
  --muted: #7a7a74;
  --border: #e2e2de;
  --accent: #2754c5;
  --accent-light: #eef2fb;
  --good: #16874a;
  --good-bg: #edf7f0;
  --warn: #b45309;
  --warn-bg: #fef6ea;
  --bad: #c42b2b;
  --bad-bg: #fceeed;
  --focus: #1c1c1a;
  --font: 'DM Sans', system-ui, -apple-system, sans-serif;
  --mono: 'DM Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  min-height: 100vh;
}
button, select, input { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Shell ===== */

#app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Top bar ===== */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-left {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.topbar-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.topbar-subtitle {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.topbar-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.control-inline {
  display: flex;
  align-items: center;
  gap: 6px;
}
.control-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}
#scenarioSelect {
  padding: 5px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.82rem;
  outline: none;
  max-width: 280px;
}
#scenarioSelect:focus { border-color: var(--accent); }

.segmented {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-radius: 5px;
  overflow: hidden;
}
.seg-btn {
  padding: 4px 10px;
  border: none;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 500;
  transition: background 80ms ease, color 80ms ease;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.active {
  background: var(--accent);
  color: #fff;
}

.legend-toggle {
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 500;
}
.legend-toggle:hover { color: var(--text); border-color: #ccc; }
.legend-toggle[aria-expanded="true"] { background: var(--bg-inset); color: var(--text); }

.legend-drawer { border-bottom: 1px solid var(--border); background: var(--surface); }
.legend-drawer[hidden] { display: none; }
.legend-inner {
  display: flex;
  gap: 20px;
  padding: 6px 32px 8px;
}
.legend-row {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.75rem;
}
.legend-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.legend-dot.ok { background: var(--good); }
.legend-dot.warn { background: var(--warn); }
.legend-dot.bad { background: var(--bad); }
.legend-dot.focus { background: var(--focus); border: 2px solid var(--border); }

/* ===== Scenario strip ===== */

.scenario-strip {
  display: flex;
  gap: 4px;
  padding: 6px 32px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.chip {
  flex-shrink: 0;
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 80ms ease, background 80ms ease;
}
.chip:hover { color: var(--text); background: var(--bg-inset); }
.chip.active {
  color: var(--accent);
  background: var(--accent-light);
  font-weight: 600;
}

/* ===== View tabs ===== */

.view-tabs {
  display: flex;
  gap: 0;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
}
.tab-btn {
  padding: 8px 14px;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 80ms ease;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* ===== Main ===== */

.main-panel {
  flex: 1;
  padding: 24px 32px 60px;
}

/* ===== Banner ===== */

.top-banner {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.top-banner h2 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.01em; }
.top-banner p { color: var(--muted); font-size: 0.88rem; margin-top: 2px; }
.banner-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
}
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.75rem;
}
.banner-badge .dot { width: 6px; height: 6px; border-radius: 50%; }
.banner-badge.healthy { background: var(--good-bg); color: var(--good); }
.banner-badge.healthy .dot { background: var(--good); }
.banner-badge.availability { background: var(--bad-bg); color: var(--bad); }
.banner-badge.availability .dot { background: var(--bad); }
.banner-badge.performance { background: var(--warn-bg); color: var(--warn); }
.banner-badge.performance .dot { background: var(--warn); }
.banner-badge.quality { background: var(--accent-light); color: var(--accent); }
.banner-badge.quality .dot { background: var(--accent); }
.banner-stat { color: var(--muted); font-size: 0.82rem; }

.main-view { display: grid; gap: 24px; }

/* ===== Eyebrow ===== */

.eyebrow, .mini-label {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.68rem;
  color: var(--muted);
  font-weight: 600;
}

/* ===== Pipeline — minimal strip ===== */

.pipeline-wrap, .inference-wrap {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.pipeline, .inference-pipeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  min-width: min-content;
}

.pipeline-node, .inference-node {
  position: relative;
  padding: 10px 16px;
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  border-bottom: 2px solid transparent;
  transition: background 80ms ease, border-color 80ms ease;
  flex: 1 1 0;
  min-width: 100px;
}
.pipeline-node + .pipeline-node,
.inference-node + .inference-node {
  border-left: 1px solid var(--border);
}
.pipeline-node::after, .inference-node::after { display: none; }

.pipeline-node:hover, .inference-node:hover {
  background: var(--bg-inset);
}
.node-kicker {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 2px;
}
.node-title { font-size: 0.82rem; margin: 0; font-weight: 600; }
.node-copy { display: none; }
.node-state {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.state-ok { background: var(--good); }
.state-warn { background: var(--warn); }
.state-bad { background: var(--bad); }
.state-focus { box-shadow: 0 0 0 2px var(--accent); background: var(--accent); }

.pipeline-node.affected, .inference-node.affected {
  background: var(--bad-bg);
}
.pipeline-node.selected, .inference-node.selected {
  border-bottom-color: var(--accent);
  background: var(--accent-light);
}
.pipeline-node.healthy-glow, .inference-node.healthy-glow {}

/* ===== Pipeline container ===== */

.pipeline-section {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
}
.pipeline-section-header {
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-inset);
}

/* ===== Detail panel (appears on click) ===== */

.detail-panel {
  padding: 20px 0;
}
.detail-panel h3 { font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; }
.detail-panel p { color: var(--text-2); }
.detail-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}
.detail-title { margin: 0 0 4px; }
.detail-sub { color: var(--muted); margin: 0; font-size: 0.85rem; }
.detail-chip {
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--muted);
}
.detail-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.detail-mini {
  padding: 0;
}
.detail-mini h4 {
  margin: 0 0 4px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}
.detail-mini p { margin: 0; font-size: 0.88rem; color: var(--text-2); }
.detail-mini ul { margin: 0; padding-left: 16px; color: var(--text-2); font-size: 0.88rem; }
.detail-mini li { margin-bottom: 3px; }

/* ===== Grids ===== */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-auto { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.subgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }

/* ===== Section headings ===== */

.section-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

/* ===== Hero / info cards ===== */

.hero-card {
  padding: 0 0 20px;
  border-bottom: 1px solid var(--border);
}
.hero-card h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.hero-card p { color: var(--muted); margin: 0; font-size: 0.88rem; }

.section-card {
  padding: 0;
}
.info-card {
  padding: 0;
}
.card-title { margin: 0 0 4px; font-size: 0.88rem; font-weight: 600; }
.card-copy { color: var(--muted); margin: 0; font-size: 0.85rem; }

/* ===== Pills ===== */

.pill-row { display: flex; flex-wrap: wrap; gap: 4px; }
.pill {
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  font-size: 0.75rem;
  color: var(--muted);
}
.pill.strong { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }

.checklist { margin: 0; padding-left: 18px; color: var(--text-2); font-size: 0.88rem; }
.checklist li { margin-bottom: 4px; }

/* ===== Trace ===== */

.trace-panel { display: grid; gap: 16px; }
.trace-card {
  padding: 0;
}
.trace-card .mini-label { margin-bottom: 8px; }
.trace-row {
  display: grid;
  grid-template-columns: 110px 1fr 50px;
  gap: 8px;
  align-items: center;
  margin-bottom: 4px;
}
.trace-label { font-size: 0.82rem; }
.trace-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--bg-inset);
  overflow: hidden;
}
.trace-fill { height: 100%; border-radius: 3px; }
.trace-ms {
  font-size: 0.75rem;
  color: var(--muted);
  text-align: right;
  font-family: var(--mono);
}

/* ===== Metrics ===== */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.metric-card {
  padding: 12px;
  border: none;
  border-radius: 0;
  background: var(--surface);
  cursor: pointer;
  transition: background 80ms ease;
  text-align: left;
}
.metric-card:hover { background: var(--bg-inset); }
.metric-card.selected { background: var(--accent-light); }
.metric-top { display: flex; justify-content: space-between; gap: 6px; align-items: center; margin-bottom: 4px; }
.metric-name { font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
.metric-value { font-size: 1.15rem; font-weight: 700; font-family: var(--mono); }
.metric-baseline { color: var(--muted); font-size: 0.72rem; }
.metric-group-title { margin: 0 0 6px; font-size: 0.85rem; font-weight: 600; }
.sparkline { width: 100%; height: 28px; }
.sparkline path.line { fill: none; stroke-width: 2; }
.sparkline path.area { opacity: 0.08; }

.dashboard-panel {
  padding: 0;
}

.kpi-strip { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 12px; }
.kpi-box { min-width: 0; }
.kpi-label { color: var(--muted); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
.kpi-value { font-size: 1rem; font-weight: 700; margin-top: 2px; }
.kpi-sub { color: var(--muted); font-size: 0.75rem; }

/* ===== Incidents / Cases / Glossary ===== */

.incident-grid, .case-grid, .glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.incident-card, .case-card, .glossary-card {
  padding: 14px;
  border: none;
  border-radius: 0;
  background: var(--surface);
  cursor: pointer;
  transition: background 80ms ease;
  text-align: left;
}
.incident-card:hover, .case-card:hover, .glossary-card:hover { background: var(--bg-inset); }
.incident-card.selected, .case-card.selected, .glossary-card.selected { background: var(--accent-light); }
.incident-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: start;
  margin-bottom: 4px;
}
.incident-org { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); font-weight: 600; }
.incident-date { color: var(--muted); font-size: 0.75rem; }
.incident-title { margin: 0 0 4px; font-size: 0.88rem; font-weight: 600; }
.incident-copy { color: var(--muted); font-size: 0.82rem; margin: 0; }
.incident-tags, .filter-row { display: flex; flex-wrap: wrap; gap: 4px; }
.filter-row { margin-bottom: 12px; }
.filter-btn {
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  transition: border-color 80ms ease, color 80ms ease;
}
.filter-btn:hover { color: var(--text); border-color: #ccc; }
.filter-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
.ghost-btn {
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.75rem;
}

.search-bar {
  width: 100%;
  padding: 6px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.search-bar:focus { border-color: var(--accent); outline: none; }
.search-bar::placeholder { color: var(--muted); }

.dual-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.answer-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: 4px;
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
}
.answer-box.hidden { display: none; }
.quote {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-2);
}

.section-stack { display: grid; gap: 24px; }
.empty-state {
  padding: 20px;
  border: 1px dashed var(--border);
  color: var(--muted);
}

/* ===== Dismissible hint ===== */

.hint-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--accent-light);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: 4px;
  font-size: 0.82rem;
  color: var(--text-2);
}
.hint-bar button {
  margin-left: auto;
  padding: 2px 6px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
}
.hint-bar button:hover { color: var(--text); }

/* ===== Responsive ===== */

@media (max-width: 900px) {
  .grid-2, .subgrid, .dual-panel { grid-template-columns: 1fr; }
  .topbar, .scenario-strip, .view-tabs, .main-panel, .legend-inner { padding-left: 16px; padding-right: 16px; }
  .grid-3 { grid-template-columns: 1fr; }
  .detail-list { grid-template-columns: 1fr; }
}