:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #eef1f4;
  --text: #1d2329;
  --muted: #69727d;
  --border: #d7dde3;
  --border-strong: #b9c2cc;
  --blue: #1f6fb2;
  --blue-soft: #e3f0fb;
  --green: #177245;
  --green-soft: #e4f4ec;
  --red: #b3261e;
  --red-soft: #fae7e5;
  --yellow: #8a5d00;
  --yellow-soft: #fff4d7;
  --focus: #254f87;
  --shadow: 0 10px 26px rgba(28, 36, 45, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid rgba(37, 79, 135, 0.28);
  outline-offset: 2px;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(16px, 4vw, 40px);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1;
}

h2 {
  font-size: 18px;
}

.status-line {
  margin: 0;
  color: var(--muted);
  text-align: right;
  max-width: 520px;
}

main {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 22px clamp(14px, 3vw, 34px) 32px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.metric {
  min-height: 86px;
  padding: 15px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric-value {
  display: block;
  margin-bottom: 4px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.metric-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.metric-value.good {
  color: var(--green);
}

.metric-value.bad {
  color: var(--red);
}

.metric-value.info {
  color: var(--blue);
}

.workspace {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 8px 8px 0;
  background: var(--surface-muted);
  border-bottom: 1px solid var(--border);
}

.tab {
  min-height: 42px;
  padding: 0 16px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-bottom: 3px solid transparent;
  font-weight: 700;
}

.tab:hover {
  color: var(--text);
}

.tab.is-active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.panel {
  display: none;
}

.panel.is-active {
  display: block;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  border-bottom: 1px solid var(--border);
}

.subtle {
  margin: 4px 0 0;
  color: var(--muted);
}

.toolbar-actions,
.legend-actions,
.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.mode-button,
.plain-button,
.filter-button {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.mode-button {
  border-color: transparent;
  background: transparent;
}

.mode-button.is-active,
.filter-button.is-active {
  color: #ffffff;
  background: var(--blue);
  border-color: var(--blue);
}

.plain-button:hover,
.filter-button:hover,
.mode-button:hover {
  border-color: var(--border-strong);
}

.chart-shell {
  padding: 18px;
}

.chart-area {
  position: relative;
  width: 100%;
  min-height: 440px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfcfd;
  overflow: hidden;
}

#historyChart {
  display: block;
  width: 100%;
  height: 440px;
}

.axis-line,
.grid-line {
  stroke: #dce2e8;
  stroke-width: 1;
}

.axis-text {
  fill: var(--muted);
  font-size: 12px;
}

.chart-line {
  fill: none;
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.chart-point {
  stroke: #ffffff;
  stroke-width: 1.5;
}

.empty-state {
  min-height: 120px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 30px;
  color: var(--muted);
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  background: #fbfcfd;
}

.legend {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px 14px;
  padding: 16px 0 4px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  min-height: 30px;
  padding: 4px 0;
  color: var(--text);
  background: transparent;
  border: 0;
  text-align: left;
  font-size: 12px;
}

.legend-item.is-hidden {
  color: var(--muted);
  opacity: 0.55;
}

.legend-swatch {
  width: 24px;
  height: 3px;
  border-radius: 999px;
  flex: 0 0 auto;
}

.legend-actions {
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.search-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.search-input {
  width: min(320px, 100%);
  min-height: 38px;
  padding: 0 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.table-summary {
  min-height: 43px;
  padding: 12px 18px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 1120px;
  border-collapse: collapse;
}

th,
td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  background: #fbfcfd;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  white-space: nowrap;
}

tbody tr:hover td {
  background: #fbfcfd;
}

.rank-col,
.rank-cell {
  width: 48px;
  color: var(--muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.sort-button {
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  font: inherit;
  text-transform: inherit;
}

.sort-button.is-sorted {
  color: var(--blue);
}

.sort-button.is-sorted::after {
  content: attr(data-direction);
  margin-left: 5px;
  color: var(--blue);
}

.producer-name {
  display: block;
  font-weight: 800;
}

.producer-meta {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.badge,
.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.badge.active {
  color: var(--green);
  background: var(--green-soft);
}

.badge.standby {
  color: var(--muted);
  background: var(--surface-muted);
}

.status-pill.pass {
  color: var(--green);
  background: var(--green-soft);
}

.status-pill.fail {
  color: var(--red);
  background: var(--red-soft);
}

.status-pill.none {
  color: var(--muted);
  background: var(--surface-muted);
}

.latency {
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.latency.fast {
  color: var(--green);
}

.latency.slow {
  color: var(--red);
}

.latency.none {
  color: var(--muted);
}

.numeric {
  font-variant-numeric: tabular-nums;
}

.error-list {
  max-width: 330px;
  color: var(--red);
  font-size: 12px;
  white-space: normal;
}

.table-empty {
  padding: 44px;
  color: var(--muted);
  text-align: center;
}

.app-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 18px clamp(16px, 4vw, 40px) 28px;
  color: var(--muted);
  font-size: 13px;
}

.app-footer a {
  font-weight: 700;
}

@media (max-width: 1100px) {
  .metrics {
    grid-template-columns: repeat(3, minmax(150px, 1fr));
  }
}

@media (max-width: 760px) {
  .app-header,
  .toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-line {
    text-align: left;
  }

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

  .toolbar-actions {
    width: 100%;
  }

  .segmented {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
  }

  .mode-button {
    width: 100%;
  }

  .chart-area,
  #historyChart {
    min-height: 360px;
    height: 360px;
  }
}

@media (max-width: 480px) {
  .metrics {
    grid-template-columns: 1fr;
  }

  .metric {
    min-height: 74px;
  }

  .filter-group,
  .search-input {
    width: 100%;
  }

  .filter-button {
    flex: 1 1 135px;
  }

}