:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #d9e2ec;
  --text: #102a43;
  --muted: #52606d;
  --blue: #2f6fed;
  --blue-soft: rgba(47, 111, 237, 0.16);
  --teal: #1f9d8b;
  --teal-soft: rgba(31, 157, 139, 0.18);
  --amber: #d9822b;
  --amber-soft: rgba(217, 130, 43, 0.18);
  --violet: #7c5cff;
  --violet-soft: rgba(124, 92, 255, 0.18);
  --danger: #d64545;
  --shadow: 0 16px 40px rgba(16, 42, 67, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: linear-gradient(180deg, #eef4fb 0%, var(--bg) 100%);
  color: var(--text);
}
.shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px;
}
.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
  align-items: end;
}
.eyebrow {
  font: 500 12px "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--blue);
  margin-bottom: 12px;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.05;
}
.hero-copy {
  margin: 0;
  max-width: 820px;
  color: var(--muted);
  font-size: 1.02rem;
}
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.meta-card, .card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.meta-card {
  padding: 18px;
}
.meta-label {
  display: block;
  font: 500 11px "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 8px;
}
.card { padding: 20px; }
.toolbar {
  margin-bottom: 18px;
}
.control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 600;
}
select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
}
.toolbar-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: .94rem;
}
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.kpi {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.kpi-label {
  color: var(--muted);
  font-size: .82rem;
  margin-bottom: 10px;
}
.kpi-value {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.kpi-sub {
  color: var(--muted);
  font-size: .88rem;
}
.layout-grid {
  display: grid;
  grid-template-columns: 1.35fr .95fr;
  gap: 18px;
}
.chart-card-wide { grid-row: span 1; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 16px;
}
.section-head h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
}
.pill {
  font: 500 11px "IBM Plex Mono", monospace;
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  white-space: nowrap;
}
.chart-wrap {
  position: relative;
  height: 420px;
}
.chart-wrap.compact {
  height: 320px;
}
.weight-row {
  margin-bottom: 16px;
}
.weight-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  font-size: .92rem;
}
.weight-bar {
  height: 10px;
  border-radius: 999px;
  background: #e9eef5;
  overflow: hidden;
}
.weight-fill {
  height: 100%;
  border-radius: 999px;
}
.metric-list {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.metric-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--muted);
}
.metric-item strong { color: var(--text); }
.table-wrap {
  max-height: 370px;
  overflow: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 11px 10px;
  border-bottom: 1px solid #e8eef4;
  text-align: left;
  font-size: .92rem;
}
th {
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
  background: var(--surface);
}
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 700;
}
.badge.spike { background: rgba(214, 69, 69, 0.12); color: var(--danger); }
.badge.dip { background: rgba(124, 92, 255, 0.12); color: var(--violet); }
.empty-state {
  color: var(--muted);
  padding: 14px 0;
}
@media (max-width: 1100px) {
  .hero, .layout-grid, .control-grid, .kpi-grid, .hero-meta {
    grid-template-columns: 1fr;
  }
  .shell { padding: 20px; }
}