:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #17202a;
  --muted: #627083;
  --line: #d9dee7;
  --soft: #eef3f7;
  --accent: #0f766e;
  --accent-dark: #0b4f4b;
  --blue: #3157d5;
  --orange: #c76a1a;
  --red: #b42318;
  --purple: #7047d8;
  --good: #137333;
  --warn: #9a5b00;
}

* {
  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;
}

.app-header {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(520px, 1.2fr);
  gap: 32px;
  align-items: end;
  padding: 30px 36px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.eyebrow,
.section-kicker {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  margin-bottom: 4px;
  font-size: 34px;
  line-height: 1.05;
}

h2 {
  margin-bottom: 8px;
  font-size: 20px;
}

h3 {
  margin-bottom: 8px;
  font-size: 14px;
}

.subtitle {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

main {
  padding: 24px 36px 42px;
}

.header-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr)) minmax(190px, 1.1fr);
  gap: 12px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

select {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--ink);
  padding: 9px 11px;
  font: inherit;
}

.export-meta {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
}

.export-meta span:nth-child(2) {
  color: var(--blue);
  font-weight: 800;
}

button {
  min-height: 36px;
  border: 1px solid var(--accent);
  border-radius: 7px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.summary-panel,
.panel,
.kpi-card,
.caveat-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.summary-panel {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 22px;
  margin-bottom: 18px;
}

.summary-copy {
  margin-bottom: 0;
  color: #2f3a48;
  font-size: 18px;
  line-height: 1.55;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.kpi-card {
  padding: 16px;
  min-height: 132px;
}

.kpi-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.kpi-card strong {
  display: block;
  margin-top: 9px;
  font-size: 29px;
  line-height: 1.05;
}

.kpi-card small {
  display: block;
  margin-top: 9px;
  color: var(--muted);
  line-height: 1.35;
}

.panel {
  padding: 20px;
  margin-bottom: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.panel p {
  color: var(--muted);
  margin-bottom: 0;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.stacked-bar {
  display: flex;
  overflow: hidden;
  width: 100%;
  height: 28px;
  margin: 18px 0;
  border-radius: 999px;
  background: var(--soft);
}

.bar-organic {
  background: var(--accent);
}

.bar-paid {
  background: var(--blue);
}

.metric-list,
.metric-card-grid,
.funnel-list,
.channel-list {
  display: grid;
  gap: 10px;
}

.metric-list.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-row,
.metric-card,
.funnel-step,
.channel-row,
.llm-source-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfd;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.metric-row span,
.metric-card span,
.funnel-step span,
.channel-row span,
.llm-source-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.metric-row strong,
.metric-card strong,
.funnel-step strong,
.channel-row strong,
.llm-source-row strong {
  display: block;
  margin-top: 5px;
  font-size: 20px;
}

.metric-card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.progress {
  height: 7px;
  overflow: hidden;
  margin-top: 9px;
  border-radius: 99px;
  background: var(--soft);
}

.progress > div {
  height: 100%;
  background: var(--accent);
}

.funnel-step {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
}

.channel-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

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

.llm-total {
  margin-bottom: 12px;
}

.llm-total strong {
  display: block;
  font-size: 28px;
}

.refresh-help {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.mini-chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.mini-chart-grid > div {
  min-height: 232px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fbfcfd;
}

canvas {
  display: block;
  width: 100%;
  max-height: 190px;
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.source-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fbfcfd;
}

.source-card h3 {
  font-size: 17px;
}

.status-success {
  color: var(--good);
}

.status-warning {
  color: var(--warn);
}

.caveat-panel {
  padding: 16px 18px;
}

.caveat-panel summary {
  cursor: pointer;
  color: var(--accent-dark);
  font-weight: 800;
}

.caveat-panel ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .app-header,
  .summary-panel,
  .two-column,
  .mini-chart-grid {
    grid-template-columns: 1fr;
  }

  .header-controls,
  .kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-header,
  main {
    padding-left: 18px;
    padding-right: 18px;
  }

  .header-controls,
  .kpi-grid,
  .metric-list.compact,
  .metric-card-grid,
  .source-grid {
    grid-template-columns: 1fr;
  }
}