:root {
  color-scheme: light;
  --bg: #eef4f8;
  --panel: #ffffff;
  --ink: #102a43;
  --muted: #5d7285;
  --line: #cbdbe7;
  --navy: #0b2945;
  --brand-blue: #2c91c4;
  --brand-orange: #f47a22;
  --green: #13784a;
  --green-bg: #edfdf4;
  --red: #bf3030;
  --red-bg: #fff0f0;
  --blue: #255edb;
  --amber: #a7650f;
  --amber-bg: #fff7e8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  padding: 14px 20px;
  background: linear-gradient(110deg, #081d31, #123e60);
  border-bottom: 3px solid var(--brand-orange);
  box-shadow: 0 4px 14px rgba(8, 29, 49, .18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  margin-right: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 18px;
  border-radius: 999px;
  color: #c9dce9;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: all .15s ease;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .18);
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .18);
  border-color: rgba(255, 255, 255, .35);
}

.nav-link.active {
  color: #081d31;
  background: #f47a22;
  border-color: #f47a22;
  box-shadow: 0 2px 8px rgba(244, 122, 34, .4);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand img {
  width: 112px;
  height: 48px;
  object-fit: contain;
}

.topbar h1 { color: #fff; }

h1 { font-size: 24px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }

#subtitle {
  margin-top: 4px;
  color: #c9dce9;
  font-size: 13px;
}

.top-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.topbar .badge:not(.ok):not(.bad) {
  color: #dceaf3;
  border-color: rgba(255, 255, 255, .32);
  background: rgba(255, 255, 255, .08);
}

.section-head h2 { color: var(--navy); }

.layout {
  display: grid;
  gap: 14px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px;
}

.panel,
.meter-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  box-shadow: 0 2px 8px rgba(26, 67, 96, .05);
}

.compact-panel {
  padding: 8px 10px;
}

.compact-panel .section-head {
  margin-bottom: 7px;
}

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

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.muted,
.meter-head p,
.health-card small,
.metric-grid span,
.status-grid span,
.dlm-target span,
.dlm-target small {
  color: var(--muted);
  font-size: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
  overflow-wrap: anywhere;
  text-align: center;
}

.badge.ok {
  color: var(--green);
  border-color: #9fd5b7;
  background: var(--green-bg);
}

.badge.bad {
  color: var(--red);
  border-color: #f0aaa7;
  background: var(--red-bg);
}

.small-button {
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 10px;
  border-color: #9fc8df;
  background: #edf8fd;
  color: #17648e;
  font-weight: 700;
  cursor: pointer;
}

.small-button.danger {
  color: #a13f12;
  border-color: #f6b080;
  background: #fff3e9;
}

.small-button:hover {
  filter: brightness(.97);
}

.status-grid,
.health-grid,
.metric-grid,
.meter-grid,
.control-grid,
.reset-grid,
.split {
  display: grid;
  gap: 10px;
}

.status-grid {
  grid-template-columns: 1.1fr 1.2fr 1fr 1fr 0.8fr 1.6fr;
}

.status-grid div,
.metric-grid div,
.health-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  background: #fbfcff;
}

.compact-panel.status-grid div,
.compact-panel .health-card {
  padding: 6px 8px;
}

.compact-panel.status-grid strong,
.compact-panel .health-card strong {
  margin-top: 3px;
  font-size: 13px;
}

.compact-panel .health-card small {
  margin-top: 2px;
  font-size: 11px;
}

.device-status-row {
  display: grid;
  grid-template-columns: minmax(180px, .8fr) repeat(4, minmax(190px, 1fr));
  gap: 8px;
  overflow-x: auto;
}

.device-status-row .summary-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-left: 5px solid var(--brand-blue);
  border-radius: 6px;
  padding: 6px 8px;
  background: #fbfcff;
}

.device-status-row .summary-card span {
  color: var(--muted);
  font-size: 12px;
}

.device-status-row .summary-card strong {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.status-grid strong,
.metric-grid strong,
.health-card strong {
  display: block;
  margin-top: 6px;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.health-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.health-card {
  border-left: 5px solid var(--line);
}

.health-card.ok { border-left-color: var(--green); }
.health-card.bad { border-left-color: var(--red); }

.health-card span,
.health-card small {
  display: block;
}

.meter-grid {
  grid-template-columns: minmax(280px, 460px);
}

.meter-card {
  border-left: 5px solid var(--line);
}

.meter-card.ok { border-left-color: var(--green); }
.meter-card.bad { border-left-color: var(--red); }

.metric-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.metric-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric-grid.one { grid-template-columns: 1fr; }
.metric-grid.compact { gap: 8px; }
.metric-grid.compact div { padding: 8px; }

.meter-ami-panel .metric-grid {
  max-width: none;
}

.meter-card .small-button {
  width: 100%;
  margin-top: 10px;
}

.control-grid {
  grid-template-columns: minmax(180px, 1fr) auto;
  align-items: end;
  margin-bottom: 12px;
}

.control-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.control-field span,
.write-mode {
  color: var(--muted);
  font-size: 12px;
}

.control-field select,
.control-field input {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 9px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.write-mode {
  margin-top: 8px;
}

.write-mode strong {
  color: var(--ink);
}

.reset-grid {
  grid-template-columns: minmax(140px, 1fr) minmax(140px, auto);
  align-items: center;
  margin-bottom: 12px;
}

.subsection-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 10px;
}

.reset-grid span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.split {
  grid-template-columns: 1fr 1fr;
}

.dlm-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 12px;
}

.dlm-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.dlm-step {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px;
  background: #fbfcff;
}

.dlm-step span,
.dlm-feedback span {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.dlm-step strong,
.dlm-feedback strong {
  display: block;
  margin-top: 5px;
  font-size: 16px;
}

.dlm-target {
  display: grid;
  align-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  border-color: #8dc6e4;
  background: linear-gradient(145deg, #edf8fd, #fff7ef);
}

.dlm-target strong {
  font-size: 44px;
  line-height: 1;
}

.dlm-feedback {
  margin-top: 10px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.dlm-feedback strong {
  font-size: 22px;
}

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

.accounting-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcff;
}

.accounting-card:first-child { border-top: 4px solid var(--brand-blue); }
.accounting-card:last-child { border-top: 4px solid var(--brand-orange); }

.metric-wide { grid-column: 1 / -1; }

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.events {
  display: grid;
  gap: 8px;
  max-height: 280px;
  overflow: auto;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 12px;
}

.event-row {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  background: #fbfcff;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

@media (max-width: 1180px) {
  .status-grid,
  .meter-grid,
  .control-grid,
  .reset-grid,
  .metric-grid.four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dlm-main,
  .split,
  .accounting-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .topbar,
  .section-head,
  .meter-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    align-items: center;
    flex-direction: row;
  }

  .brand img {
    width: 90px;
    height: 40px;
  }

  .status-grid,
  .health-grid,
  .meter-grid,
  .control-grid,
  .reset-grid,
  .metric-grid.two,
  .metric-grid.four {
    grid-template-columns: 1fr;
  }


  .dlm-flow {
    grid-template-columns: 1fr;
  }

  .dlm-target strong {
    font-size: 34px;
  }
}

.config-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(140px, auto);
  gap: 10px;
  align-items: end;
}

.autel-config-panel .control-field {
  margin: 0;
}

.autel-config-panel .small-button {
  min-height: 34px;
}

@media (max-width: 720px) {
  .config-row {
    grid-template-columns: 1fr;
  }
}

.manual-write-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto;
  gap: 8px;
  align-items: end;
  margin-top: 10px;
}

.modbus-config-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.modbus-config-grid fieldset {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcff;
}

.modbus-config-grid legend {
  padding: 0 6px;
  color: var(--navy);
  font-weight: 700;
}

.modbus-config-grid .control-field {
  margin: 0;
}

.modbus-config-grid input,
.modbus-config-grid select {
  min-height: 34px;
}

@media (max-width: 1180px) {
  .modbus-config-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .modbus-config-grid fieldset {
    grid-template-columns: 1fr;
  }
}

.manual-write-row .control-field {
  margin: 0;
}

.manual-write-row input {
  min-height: 34px;
}

@media (max-width: 720px) {
  .manual-write-row {
    grid-template-columns: 1fr;
  }
}