:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #eef1f5;
  --text: #17202a;
  --muted: #687586;
  --line: #d9dee7;
  --primary: #0f766e;
  --primary-strong: #115e59;
  --danger: #b42318;
  --warning: #a15c07;
  --ok: #087443;
  --shadow: 0 10px 30px rgba(20, 32, 48, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}

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

a:hover {
  color: var(--primary-strong);
}

.topbar {
  align-items: center;
  background: #111827;
  color: #fff;
  display: flex;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 28px;
}

.brand {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
}

.brand:hover {
  color: #fff;
}

.nav {
  align-items: center;
  display: flex;
  gap: 18px;
}

.nav a,
.nav button {
  background: transparent;
  border: 0;
  color: #d6dde8;
  cursor: pointer;
  font: inherit;
  padding: 0;
}

.nav a:hover,
.nav button:hover {
  color: #fff;
}

.page {
  margin: 0 auto;
  max-width: 1280px;
  padding: 30px 24px 48px;
}

.page-heading {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 22px;
}

.page-heading h1 {
  font-size: 30px;
  margin: 0 0 6px;
}

.page-heading p {
  color: var(--muted);
  margin: 0;
}

.primary,
.secondary,
.danger-button {
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 40px;
  padding: 10px 16px;
}

.primary {
  background: var(--primary);
  color: #fff;
}

.primary:hover {
  background: var(--primary-strong);
  color: #fff;
}

.secondary {
  background: var(--surface-muted);
  color: var(--text);
}

.danger-button {
  background: var(--danger);
  color: #fff;
}

.danger-button:hover {
  background: #8f1b13;
  color: #fff;
}

.actions,
.row-actions {
  align-items: center;
  display: flex;
  gap: 10px;
}

.danger-link {
  color: var(--danger);
}

.danger-link:hover {
  color: #8f1b13;
}

.metrics {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 22px;
}

.metrics article,
.panel,
.auth-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metrics article {
  padding: 18px;
}

.metrics span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}

.metrics strong {
  font-size: 26px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.two {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
}

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

.panel.narrow,
.auth-panel {
  max-width: 640px;
}

.panel-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.panel-heading h2 {
  font-size: 18px;
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  min-width: 720px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

code {
  background: var(--surface-muted);
  border-radius: 6px;
  color: #263445;
  display: inline-block;
  font-family: Consolas, Monaco, monospace;
  max-width: 100%;
  overflow-wrap: anywhere;
  padding: 2px 6px;
}

.status {
  border-radius: 999px;
  display: inline-flex;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 9px;
}

.status.online {
  background: #dcfce7;
  color: var(--ok);
}

.status.offline {
  background: #fee2e2;
  color: var(--danger);
}

.status.unknown {
  background: #fef3c7;
  color: var(--warning);
}

.status-text.online {
  color: var(--ok);
}

.status-text.offline {
  color: var(--danger);
}

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

.reading-list {
  display: grid;
  gap: 10px;
}

.reading-list > a,
.reading-list > div {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  display: grid;
  gap: 5px;
  padding: 12px;
}

.reading-list span,
.empty {
  color: var(--muted);
}

.topic-list {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
}

.topic-list dt {
  color: var(--muted);
  font-weight: 700;
}

.topic-list dd {
  margin: 0 0 8px;
}

.form {
  display: grid;
  gap: 14px;
}

.form p {
  display: grid;
  gap: 6px;
  margin: 0;
}

.form label {
  color: var(--muted);
  font-weight: 700;
}

.form input,
.form select,
.form textarea {
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  padding: 10px 12px;
  width: 100%;
}

.auth-panel {
  margin: 60px auto 0;
  padding: 28px;
}

.auth-panel h1 {
  margin-top: 0;
}

.messages {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

.message {
  border-radius: 8px;
  padding: 12px 14px;
}

.message.success {
  background: #dcfce7;
  color: var(--ok);
}

.message.error {
  background: #fee2e2;
  color: var(--danger);
}

@media (max-width: 860px) {
  .topbar,
  .page-heading,
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    gap: 14px;
    padding: 18px;
  }

  .metrics,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .page {
    padding: 22px 16px 36px;
  }
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.tylco-state {
  border-radius: 999px;
  display: inline-flex;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  padding: 6px 10px;
  white-space: nowrap;
}

.tylco-state.on {
  background: #dcfce7;
  color: var(--ok);
}

.tylco-state.off {
  background: #eef1f5;
  color: #475569;
}

.tylco-state.unknown {
  background: #fef3c7;
  color: var(--warning);
}

.tylco-mini {
  display: grid;
  gap: 4px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.tylco-status-grid article {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 8px;
  padding: 14px;
}

.tylco-status-grid span {
  color: var(--muted);
  font-size: 13px;
}

.tylco-status-grid strong {
  font-size: 18px;
}

@media (max-width: 860px) {
  .tylco-mini,
  .tylco-status-grid {
    grid-template-columns: 1fr;
  }
}



.filter-bar {
  margin-bottom: 22px;
}

.filter-form {
  align-items: end;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(220px, 0.8fr) minmax(260px, 1fr) auto auto;
}

.filter-form label {
  color: var(--muted);
  display: grid;
  font-size: 13px;
  font-weight: 700;
  gap: 6px;
}

.filter-form input,
.filter-form select {
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  min-height: 40px;
  padding: 9px 11px;
  width: 100%;
}

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

.device-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
  padding: 18px;
}

.device-card header {
  align-items: flex-start;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.device-card h2 {
  font-size: 20px;
  margin: 0 0 4px;
}

.device-card p {
  color: var(--muted);
  margin: 0 0 8px;
}

.state-strip {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.state-strip div,
.info-grid div {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 6px;
  padding: 12px;
}

.state-strip span,
.info-grid dt,
.info-list dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

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

.info-grid dd,
.info-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.info-list {
  display: grid;
  gap: 10px;
  grid-template-columns: 180px minmax(0, 1fr);
  margin: 0;
}

.gps-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 6px;
  padding: 12px;
}

.gps-box.valid {
  background: #ecfdf5;
  border-color: #bbf7d0;
}

.gps-box strong {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .filter-form,
  .device-cards,
  .state-strip,
  .info-grid,
  .info-list {
    grid-template-columns: 1fr;
  }

  .device-card header {
    flex-direction: column;
  }
}

.overview-panel {
  padding: 14px;
}

.overview-table {
  font-size: 13px;
  min-width: 1420px;
}

.overview-table th {
  background: var(--surface-muted);
  position: sticky;
  top: 0;
  z-index: 1;
}

.overview-table th,
.overview-table td {
  padding: 9px 8px;
}

.overview-table tbody tr:hover {
  background: #f8fafc;
}

.overview-table code {
  font-size: 12px;
  padding: 1px 5px;
}

.overview-table .status,
.overview-table .tylco-state {
  font-size: 11px;
  padding: 4px 8px;
}