:root {
  color-scheme: dark;
  --bg: #101619;
  --panel: #182126;
  --surface: #202c32;
  --line: #34444b;
  --ink: #edf4f2;
  --muted: #a5b8bc;
  --accent: #a2e5be;
  --danger: #ffaaa2;
  --amber: #f0d094;
  --mono: Consolas, "Cascadia Code", monospace;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    15px/1.55 "Segoe UI",
    sans-serif;
}
button,
input,
textarea,
select {
  font: inherit;
}
header {
  height: 76px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 4vw;
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 3px;
}
.brand span {
  font: 11px var(--mono);
  letter-spacing: 2px;
  color: var(--accent);
  border-left: 1px solid var(--line);
  padding-left: 18px;
  margin-left: 18px;
}
.environment {
  font: 11px var(--mono);
  letter-spacing: 1px;
  color: var(--muted);
  margin-left: auto;
}
main {
  max-width: 1540px;
  margin: auto;
  padding: 42px 4vw;
}
.intro {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 32px;
}
h1 {
  font-size: clamp(26px, 2.5vw, 38px);
  letter-spacing: -1.2px;
  line-height: 1.2;
  margin: 9px 0 12px;
}
p {
  margin: 8px 0 16px;
  color: var(--muted);
}
.eyebrow,
.small-label {
  font: 11px var(--mono);
  letter-spacing: 1.5px;
  color: var(--accent);
  margin: 0 0 8px;
}
.identity {
  text-align: right;
  flex-shrink: 0;
}
.identity span {
  display: block;
  color: var(--muted);
  font: 10px var(--mono);
  letter-spacing: 1px;
}
.identity strong {
  font: 17px var(--mono);
  display: block;
  margin-top: 10px;
}
.layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 22px;
}
aside,
.workspace {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  min-width: 0;
}
h2 {
  font-size: 17px;
  font-weight: 650;
  margin: 0 0 18px;
  letter-spacing: -0.3px;
}
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.section-title h2 {
  margin: 0;
}
.section-title .small-label {
  font-size: 10px;
  text-align: right;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  font: 12px var(--mono);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 7px 11px;
}
.pill:before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
}
.pill.online,
.success {
  color: var(--accent);
}
.pill.alarm {
  color: var(--danger);
}
label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 7px;
}
input:not([type="checkbox"]):not([type="range"]),
textarea,
select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  min-height: 44px;
  padding: 10px 11px;
}
textarea {
  resize: vertical;
  font: 12px/1.5 var(--mono);
}
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
button {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  padding: 10px 13px;
  min-height: 44px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s;
}
button:hover:not(:disabled) {
  background: #34464f;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #10291d;
}
button.primary:hover:not(:disabled) {
  background: #c4f5d7;
}
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.wide {
  width: 100%;
  margin-top: 12px;
}
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.input-action {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.hint {
  font-size: 12px;
  line-height: 1.65;
  margin: 12px 0 0;
  color: var(--muted);
}
.endpoints {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 7px;
  margin: 22px 0;
  font: 11px var(--mono);
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  overflow-wrap: anywhere;
}
.text-danger {
  border: 0;
  background: transparent;
  color: var(--danger);
  padding-left: 0;
  margin-top: 8px;
}
.qr-empty {
  display: flex;
  align-items: center;
  flex-direction: column;
  border: 1px dashed var(--line);
  padding: 26px 16px;
  text-align: center;
  margin-bottom: 18px;
}
.qr-empty p {
  font-size: 12px;
  margin: 8px 0 0;
}
.qr-symbol {
  font-size: 50px;
  line-height: 1.3;
  color: var(--muted);
}
#qr-image {
  width: 100%;
  height: auto;
  background: white;
  border-radius: 8px;
  margin-bottom: 20px;
}
#login-form input {
  margin-bottom: 12px;
}
.sensors {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.sensor {
  border: 1px solid var(--line);
  padding: 18px;
  border-radius: 9px;
  background: var(--bg);
}
.sensor-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.sensor-heading strong {
  font: 15px var(--mono);
}
.sensor-heading span {
  font-size: 11px;
  color: var(--muted);
}
.reading {
  font: 36px var(--mono);
  display: block;
  margin: 16px 0 10px;
  color: var(--accent);
}
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  min-height: 34px;
  margin: 0;
}
input[type="checkbox"] {
  accent-color: var(--accent);
  width: 17px;
  height: 17px;
  margin: 0;
  flex-shrink: 0;
}
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin: 0;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.presets {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.presets span {
  font-size: 11px;
  color: var(--muted);
}
.presets button {
  font-size: 11px;
  padding: 8px;
}
.telemetry-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  border-top: 1px solid var(--line);
  margin-top: 20px;
  padding-top: 14px;
}
.telemetry-line > span {
  font: 11px var(--mono);
  color: var(--muted);
  margin-left: auto;
}
.config-state {
  border-left: 2px solid var(--accent);
  padding: 8px 12px;
  background: var(--bg);
  font-size: 12px;
}
.config-state.warning {
  border-color: var(--amber);
  color: var(--amber);
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
th {
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
  padding: 0 10px 12px;
}
td {
  padding: 8px 10px;
  border-top: 1px solid var(--line);
  font: 13px var(--mono);
}
td input {
  min-width: 70px;
}
td:first-child,
th:first-child {
  padding-left: 0;
}
.table-wrap {
  overflow-x: auto;
}
.config-footer {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
}
.config-footer > label {
  max-width: 155px;
  margin: 0;
}
.config-footer input {
  margin-top: 8px;
}
details {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 12px;
  min-height: 30px;
}
pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 12px/1.7 var(--mono);
  background: var(--bg);
  padding: 14px;
  border-radius: 6px;
  max-height: 360px;
  overflow: auto;
}
.faults {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
  justify-content: space-between;
}
.faults label {
  margin: 0;
}
.faults input[type="number"] {
  max-width: 150px;
  margin-top: 7px;
}
.traffic select {
  width: auto;
  max-width: 150px;
}
.logs {
  max-height: 430px;
  overflow: auto;
  margin-top: 18px;
}
.log {
  display: grid;
  grid-template-columns: 72px 62px 1fr;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font: 11px/1.6 var(--mono);
}
.log time {
  color: var(--muted);
}
.log .direction {
  color: var(--accent);
}
.log.RX .direction {
  color: #91ccf0;
}
.log.ERROR .direction,
.log.DROP .direction {
  color: var(--danger);
}
.log.PUBACK .direction {
  color: var(--muted);
}
.log strong {
  font-weight: 400;
  overflow-wrap: anywhere;
}
.log pre {
  padding: 0;
  background: none;
  margin: 5px 0;
  max-height: none;
  font-size: 11px;
}
.log small {
  font-size: 10px;
  color: var(--muted);
}
.server-summary {
  font-size: 13px;
  padding: 16px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  white-space: pre-wrap;
}
.server-summary strong {
  color: var(--accent);
}
#notice {
  position: sticky;
  top: 12px;
  z-index: 2;
  padding: 13px 18px;
  border: 1px solid var(--accent);
  background: #183427;
  color: var(--ink);
  border-radius: 8px;
  margin-bottom: 22px;
}
#notice.error {
  background: #462725;
  border-color: var(--danger);
}
footer {
  max-width: 1540px;
  margin: auto;
  padding: 8px 4vw 32px;
  display: flex;
  justify-content: space-between;
  font: 11px var(--mono);
  color: var(--muted);
}
[hidden] {
  display: none !important;
}
.gate {
  width: min(420px, calc(100% - 32px));
  margin: 64px auto;
}
.gate-error {
  color: var(--danger);
  font-size: 13px;
  margin: 12px 0 0;
}
@media (min-width: 1450px) {
  .layout {
    grid-template-columns: 360px minmax(0, 1fr);
  }
}
@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 290px minmax(0, 1fr);
  }
  .sensors {
    gap: 8px;
  }
  .sensor {
    padding: 12px;
  }
  .config-footer {
    align-items: start;
    flex-direction: column;
  }
  .reading {
    font-size: 29px;
  }
  .toolbar > button {
    width: 100%;
  }
}
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
  aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  aside .panel:last-child {
    grid-column: 1/-1;
  }
  .identity {
    display: none;
  }
  .environment {
    display: none;
  }
  header > .pill {
    margin-left: auto;
  }
}
@media (max-width: 560px) {
  main {
    padding: 28px 16px;
  }
  .intro {
    margin-bottom: 22px;
  }
  .panel {
    padding: 18px;
  }
  .layout,
  aside,
  .workspace {
    gap: 16px;
  }
  aside {
    display: flex;
  }
  .sensors {
    grid-template-columns: 1fr;
  }
  .sensor {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
    padding: 16px;
  }
  .sensor-heading {
    grid-column: 1/-1;
  }
  .reading {
    margin: 0;
  }
  .sensor .check {
    grid-column: 1/-1;
  }
  .sensor input[type="range"] {
    grid-column: 1/-1;
  }
  .telemetry-line > span {
    margin-left: 0;
  }
  .brand {
    font-size: 20px;
  }
  .brand span {
    margin-left: 10px;
    padding-left: 10px;
    font-size: 10px;
  }
  .log {
    grid-template-columns: 60px 50px 1fr;
    gap: 6px;
  }
  .faults {
    align-items: start;
    flex-direction: column;
  }
  .faults button {
    width: 100%;
  }
  footer {
    gap: 12px;
    flex-wrap: wrap;
  }
}
.identity small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}
.fleet {
  margin-bottom: 22px;
}
.fleet-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 22px;
  align-items: start;
}
.device-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
  max-height: 440px;
  overflow: auto;
}
.device-row {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  text-align: left;
  background: var(--bg);
  font-weight: 400;
  padding: 12px 14px;
}
.device-row.selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.device-row strong {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 650;
  min-width: 0;
}
.device-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.device-row small,
.device-meta {
  font: 11px/1.5 var(--mono);
  color: var(--muted);
  overflow-wrap: anywhere;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
  flex-shrink: 0;
}
.status-dot.online {
  background: var(--accent);
}
.status-dot.busy {
  background: var(--amber);
}
.status-dot.alarm {
  background: var(--danger);
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font: 10px var(--mono);
  letter-spacing: 0.5px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
}
.tag.alarm {
  color: var(--danger);
  border-color: var(--danger);
}
.tag.amber {
  color: var(--amber);
  border-color: var(--amber);
}
.device-empty {
  color: var(--muted);
  font-size: 13px;
  border: 1px dashed var(--line);
  border-radius: 9px;
  padding: 22px 16px;
}
.add-device {
  border-left: 1px solid var(--line);
  padding-left: 22px;
}
.add-device h3 {
  font-size: 14px;
  margin: 0 0 14px;
}
.add-device input {
  margin-bottom: 12px;
}
.add-device .wide {
  margin-top: 0;
}
.empty-detail {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
}
.danger-zone {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 8px;
}
@media (max-width: 900px) {
  .fleet-body {
    grid-template-columns: 1fr;
  }
  .add-device {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 18px;
  }
}
@media (max-width: 560px) {
  .device-list {
    grid-template-columns: 1fr;
    max-height: 360px;
  }
}
.wifi-panel { border-top: 2px solid var(--accent); }
.wifi-endpoints { grid-template-columns: 85px minmax(0, 1fr); }
.wifi-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.wifi-delays { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.wifi-fields select, .wifi-delays input { margin-top: 7px; }
.wifi-panel > .hint { margin-top: 0; }
@media (max-width: 1100px) { .wifi-fields { grid-template-columns: 1fr; } .wifi-delays { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .wifi-delays { grid-template-columns: 1fr; } .wifi-panel .actions > button { flex: 1 1 45%; } }
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}