:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151a21;
  --panel-soft: #1d2430;
  --line: #2d3645;
  --text: #edf3f8;
  --muted: #8d9aa8;
  --good: #2fb66d;
  --warn: #e0a93f;
  --bad: #f05b50;
  --accent: #38a3d1;
  --accent-soft: #15394a;
  --cyan: #38c7d3;
  --chart-grid: #2a3340;
  --chart-blue: #55a6ff;
  --chart-fill: #2d6cdf;
  --hot: #f45b69;
  --warm: #f7b955;
  --nominal: #2fd38a;
  --cold: #42c7ff;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

body.light {
  color-scheme: light;
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-soft: #eef3f7;
  --line: #d7e0e8;
  --text: #13202d;
  --muted: #667483;
  --good: #168450;
  --warn: #a86800;
  --bad: #c53a32;
  --accent: #17789c;
  --accent-soft: #e2f3f8;
  --cyan: #0aa7b4;
  --chart-grid: #d7e0e8;
  --chart-blue: #1d70cf;
  --chart-fill: #2c7be5;
  --hot: #cf313f;
  --warm: #bb7a07;
  --nominal: #168450;
  --cold: #177cc4;
  --shadow: 0 14px 34px rgba(19, 32, 45, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 38px;
  border: 0;
  border-radius: 7px;
  padding: 0 15px;
  background: var(--accent);
  color: #fff;
  font-weight: 760;
  cursor: pointer;
  transition: background 120ms ease, filter 120ms ease, transform 120ms ease;
}

button:hover {
  filter: brightness(1.08);
}

button:active {
  transform: translateY(1px);
}

button.secondary {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
}

button.danger {
  background: var(--bad);
}

input,
select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0 10px;
  background: var(--panel-soft);
  color: var(--text);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 163, 209, 0.18);
}

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

h1 {
  font-size: 23px;
  font-weight: 780;
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  color: var(--text);
  font-size: 13px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h3 {
  color: var(--accent);
  font-size: 14px;
  font-weight: 760;
  text-align: center;
  letter-spacing: 0;
}

.app {
  width: min(100vw - 28px, 1840px);
  margin: 0 auto;
  padding: 14px 0 24px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto minmax(240px, 1fr);
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.brand,
.top-actions,
.split-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
  padding: 5px;
}

.brand p,
.muted {
  color: var(--muted);
}

.top-actions {
  justify-content: flex-end;
}

.page-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.nav-button {
  min-height: 34px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
}

.nav-button.active {
  background: var(--accent);
  color: #fff;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-weight: 700;
}

.theme-toggle input {
  width: 17px;
  min-height: 17px;
}

.badge,
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 11px;
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.badge.good,
.pill.good {
  color: #fff;
  background: var(--good);
  border-color: var(--good);
}

.badge.bad,
.pill.bad {
  color: #fff;
  background: var(--bad);
  border-color: var(--bad);
}

.system-strip {
  display: grid;
  grid-template-columns: 120px 140px 130px minmax(260px, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}

.strip-item {
  display: grid;
  gap: 4px;
  min-height: 58px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.strip-item span,
.metric-grid span,
.target-grid span,
.lockout-list span,
.mini-stats span,
.status-lines,
.debug-line span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 730;
}

.strip-item span {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.strip-item strong {
  overflow: hidden;
  font-size: 15px;
  font-weight: 760;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--accent);
  opacity: 0.75;
}

.panel-head,
.pack-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.dashboard-shell {
  display: grid;
  grid-template-columns: minmax(620px, 1.05fr) minmax(520px, 0.95fr);
  grid-template-areas:
    "pack cells"
    "pack health"
    "nodes nodes";
  gap: 14px;
  width: 100%;
  margin: 18px 0 0;
  align-items: stretch;
}

.pack-hero {
  grid-area: pack;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 520px;
  place-items: center;
}

.pack-title {
  width: 100%;
  align-self: start;
  margin-bottom: 0;
}

.cell-summary {
  grid-area: cells;
}

.health-summary {
  grid-area: health;
}

.node-summary {
  grid-area: nodes;
}

.soc-ring {
  display: grid;
  place-items: center;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--panel) 0 56%, transparent 57%),
    conic-gradient(var(--good) var(--soc-angle, 0deg), var(--panel-soft) 0deg);
  box-shadow: inset 0 0 0 1px var(--line), 0 0 32px rgba(47, 182, 109, 0.14);
}

.soc-ring.large {
  width: clamp(220px, 18vw, 300px);
  height: clamp(220px, 18vw, 300px);
}

.soc-ring div {
  display: grid;
  place-items: center;
}

.soc-ring span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 780;
}

.soc-ring strong {
  margin-top: 8px;
  font-size: clamp(48px, 5vw, 76px);
  font-weight: 780;
  line-height: 1;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  width: 100%;
}

.metric-grid.primary {
  grid-template-columns: repeat(5, minmax(118px, 1fr));
}

.metric-grid div,
.target-grid div,
.mini-stats div,
.debug-line {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  background: var(--panel-soft);
}

.metric-grid strong,
.target-grid strong,
.mini-stats strong {
  display: block;
  overflow: hidden;
  margin-top: 7px;
  color: var(--text);
  font-size: clamp(21px, 1.75vw, 30px);
  font-weight: 760;
  line-height: 1.06;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cell-extremes {
  display: grid;
  gap: 13px;
}

.stat-line {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) auto auto;
  align-items: baseline;
  gap: 12px;
}

.stat-line span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 730;
}

.stat-line strong {
  font-size: clamp(30px, 3vw, 44px);
  font-weight: 360;
  line-height: 1;
  white-space: nowrap;
}

.stat-line em {
  min-width: 28px;
  color: var(--muted);
  font-size: 15px;
  font-style: normal;
  text-align: right;
}

.target-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.lockout-list {
  display: grid;
  gap: 9px;
}

.lockout-list div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: minmax(720px, 1.45fr) minmax(360px, 0.55fr);
  gap: 14px;
}

.heatmap-panel,
.order-panel {
  grid-column: 1 / -1;
}

.chart-panel {
  display: grid;
  gap: 12px;
}

.chart-box {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #10161d;
}

body.light .chart-box {
  background: #f7fafc;
}

.chart-box canvas {
  display: block;
  width: 100%;
  height: 260px;
  max-width: 100%;
}

.heatmap-box {
  position: relative;
}

.heatmap-box canvas {
  height: min(54vh, 560px);
  min-height: 420px;
  cursor: crosshair;
  border-radius: 6px;
}

.heat-tooltip {
  position: absolute;
  z-index: 10;
  min-width: 168px;
  pointer-events: none;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 10px 12px;
  background: #0f141b;
  color: var(--text);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.38);
  transform: translate(12px, -50%);
}

body.light .heat-tooltip {
  background: #ffffff;
}

.heat-tooltip strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 13px;
}

.heat-tooltip span {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.heat-tooltip b {
  color: var(--text);
  font-weight: 760;
}

.temp-legend {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.temp-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.temp-legend span::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: currentColor;
}

.temp-legend .cold {
  color: var(--cold);
}

.temp-legend .nominal {
  color: var(--nominal);
}

.temp-legend .warm {
  color: var(--warm);
}

.temp-legend .hot {
  color: var(--hot);
}

.order {
  display: grid;
  grid-template-columns: repeat(16, minmax(42px, 1fr));
  gap: 6px;
}

.order-slot {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 7px 4px;
  text-align: center;
  background: var(--panel-soft);
}

.order-slot span {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.order-slot strong {
  display: block;
  margin-top: 4px;
}

.debug-grid {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(280px, 360px) minmax(520px, 1fr);
  gap: 14px;
  align-items: start;
}

.connection,
.bnode-panel,
.raw-panel {
  display: grid;
  gap: 10px;
}

.status-lines {
  display: grid;
  gap: 5px;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.button-grid button:nth-child(5) {
  grid-column: span 2;
}

.debug-line strong {
  display: block;
  margin-top: 6px;
  word-break: break-word;
}

.raw-log {
  height: min(62vh, 620px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #0b0f14;
  color: #e8edf2;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  line-height: 1.35;
}

body.light .raw-log {
  background: #111820;
}

.log-row {
  display: grid;
  grid-template-columns: 72px 34px 1fr;
  gap: 8px;
}

.log-row .tx {
  color: #8fd6ff;
}

.log-row .rx {
  color: #a9f0c8;
}

.log-row .error {
  color: #ffaaa5;
}

.command-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.error-text {
  min-height: 18px;
  color: var(--bad);
  font-size: 13px;
}

@media (max-width: 1180px) {
  .topbar,
  .dashboard-shell,
  .telemetry-grid,
  .debug-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    justify-items: stretch;
  }

  .top-actions {
    justify-content: space-between;
  }

  .dashboard-shell {
    grid-template-areas:
      "pack"
      "cells"
      "health"
      "nodes";
  }

  .pack-hero {
    min-height: auto;
    gap: 22px;
  }

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

  .heatmap-panel,
  .order-panel {
    grid-column: auto;
  }
}

@media (max-width: 760px) {
  .app {
    width: min(100vw - 12px, 1840px);
  }

  .system-strip,
  .metric-grid.primary,
  .target-grid,
  .mini-stats {
    grid-template-columns: 1fr;
  }

  .strip-item.wide {
    grid-column: auto;
  }

  .page-nav {
    overflow-x: auto;
    justify-content: flex-start;
  }

  .brand {
    align-items: flex-start;
  }

  .soc-ring.large {
    width: 220px;
    height: 220px;
  }

  .stat-line {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .stat-line em {
    text-align: left;
  }

  .order {
    grid-template-columns: repeat(4, minmax(42px, 1fr));
  }
}