:root {
  --bg-deep: #09263a;
  --bg-mid: #10344c;
  --bg-soft: #edf6f9;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --text-main: #0f1f2d;
  --text-muted: #5c6b75;
  --accent: #0ea5a4;
  --accent-dark: #0a7b80;
  --line: rgba(16, 52, 76, 0.14);
  --shadow: 0 20px 50px rgba(8, 33, 48, 0.14);
}

html {
  font-size: 16px;
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  color: var(--text-main);
  background:
    radial-gradient(circle at top left, rgba(14, 165, 164, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(16, 52, 76, 0.24), transparent 30%),
    linear-gradient(180deg, #f7fbfc 0%, #edf6f9 46%, #ffffff 100%);
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.12rem rgba(255, 255, 255, 0.9), 0 0 0 0.3rem rgba(14, 165, 164, 0.35);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(9, 38, 58, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar {
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.82);
}

.navbar-dark .navbar-nav .nav-link:hover {
  color: #ffffff;
}

.nav-dropdown {
  min-width: 15rem;
  padding: 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(9, 38, 58, 0.96);
  box-shadow: 0 18px 36px rgba(8, 33, 48, 0.28);
}

.nav-dropdown .dropdown-item {
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.88);
  padding: 0.6rem 0.8rem;
}

.nav-dropdown .dropdown-item:hover,
.nav-dropdown .dropdown-item:focus {
  color: #ffffff;
  background: rgba(14, 165, 164, 0.18);
}

.nav-dropdown .dropdown-divider {
  border-color: rgba(255, 255, 255, 0.08);
}

.page-shell {
  flex: 1 0 auto;
  padding-top: 2rem;
}

.btn-accent {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent) 0%, #0f766e 100%);
  border: none;
}

.btn-accent:hover {
  color: #ffffff;
  background: linear-gradient(135deg, #12b7b6 0%, var(--accent-dark) 100%);
}

.hero-section {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  padding: 2rem 0 1rem;
  align-items: center;
}

.hero-copy,
.hero-card,
.metric-card,
.feature-card,
.panel-card,
.table-card,
.map-card,
.api-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 2.4rem;
  background:
    linear-gradient(140deg, rgba(9, 38, 58, 0.96), rgba(16, 52, 76, 0.86)),
    linear-gradient(135deg, rgba(14, 165, 164, 0.22), transparent);
  color: #ffffff;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-copy h1 {
  font-size: clamp(2.3rem, 5vw, 4.2rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}

.hero-subtitle {
  max-width: 42rem;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.84);
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.hero-card {
  padding: 2rem;
}

.status-chip {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(14, 165, 164, 0.12);
  color: var(--accent-dark);
  font-weight: 700;
}

.highlight-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.highlight-list li + li {
  margin-top: 0.9rem;
}

.metric-grid,
.feature-grid,
.panel-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.metric-grid,
.feature-grid,
.panel-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card,
.feature-card,
.panel-card,
.table-card,
.map-card,
.api-card {
  padding: 1.5rem;
}

.metric-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
}

.metric-value {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
  margin-bottom: 0.6rem;
}

.section-heading {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.dashboard-hero {
  padding: 1.8rem;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(9, 38, 58, 0.94), rgba(14, 165, 164, 0.84));
  color: #ffffff;
  box-shadow: var(--shadow);
}

.dashboard-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(18rem, 1fr);
  gap: 1.5rem;
  align-items: end;
}

.dashboard-hero-side {
  display: grid;
  gap: 1rem;
}

.dashboard-hero-chip {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.1);
}

.dashboard-hero-chip strong {
  font-size: 1.8rem;
  line-height: 1;
}

.dashboard-toolbar {
  display: grid;
  gap: 1.25rem;
}

.dashboard-filter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.dashboard-toolbar-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.dashboard-toolbar-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.dashboard-range-pills,
.dashboard-sensor-actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.dashboard-status-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.dashboard-view-options {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

.dashboard-sensor-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.dashboard-sensor-item {
  min-height: 6.6rem;
  justify-content: space-between;
}

.dashboard-sensor-empty {
  padding: 1rem;
  border: 1px dashed var(--line);
  border-radius: 18px;
  color: var(--text-muted);
  background: rgba(14, 165, 164, 0.04);
}

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

.dashboard-summary-card {
  min-height: 11rem;
}

.dashboard-value-sm {
  font-size: 1.45rem;
  line-height: 1.2;
}

.dashboard-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(19rem, 0.95fr);
  gap: 1rem;
}

.dashboard-primary-stack,
.dashboard-secondary-stack {
  display: grid;
  gap: 1rem;
}

.dashboard-section-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1rem;
}

.dashboard-chart-card,
.dashboard-location-panel,
.dashboard-insight-panel {
  overflow: hidden;
}

.dashboard-chart-host {
  min-height: 360px;
  padding: 0.25rem;
}

.dashboard-chart-grid-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.dashboard-sensor-chart-card {
  padding: 1rem;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(14, 165, 164, 0.04);
}

.dashboard-sensor-chart-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  margin-bottom: 0.8rem;
}

.dashboard-sensor-chart-header h3 {
  margin: 0;
  font-size: 1rem;
}

.dashboard-sensor-chart-header p {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.dashboard-sensor-chart-header strong {
  font-size: 1.25rem;
  line-height: 1;
}

.dashboard-sensor-chart-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.dashboard-sensor-canvas-wrap {
  position: relative;
  min-height: 15rem;
}

.dashboard-sensor-canvas {
  width: 100%;
  height: 15rem !important;
}

.dashboard-sensor-chart-empty {
  min-height: 10rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
}

.dashboard-svg-chart {
  width: 100%;
  height: auto;
  display: block;
}

.dashboard-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1rem;
}

.dashboard-legend-item {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.dashboard-legend-color {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
}

.dashboard-latest-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.dashboard-latest-card,
.dashboard-latest-empty {
  min-height: 10rem;
  padding: 1.2rem;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(14, 165, 164, 0.05);
}

.dashboard-location-card {
  min-height: 20rem;
}

.dashboard-map-canvas {
  width: 100%;
  min-height: 20rem;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.dashboard-location-details,
.dashboard-location-empty {
  width: 100%;
  display: grid;
  gap: 1rem;
  text-align: left;
}

.dashboard-track-shell {
  width: 100%;
  display: grid;
  gap: 1rem;
}

.dashboard-location-svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
}

.dashboard-track-meta {
  display: grid;
  gap: 0.8rem;
}

.dashboard-location-coords {
  display: grid;
  gap: 0.25rem;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line);
}

.dashboard-location-coords span {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.dashboard-location-coords strong {
  font-size: 1.2rem;
}

.dashboard-insight-list {
  display: grid;
  gap: 0.85rem;
  padding-left: 1.1rem;
  margin: 0;
}

.dashboard-insight-list li {
  color: var(--text-main);
}

.dashboard-empty-state {
  text-align: center;
}

.chart-placeholder,
.map-placeholder {
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(14, 165, 164, 0.09), rgba(9, 38, 58, 0.06)),
    repeating-linear-gradient(
      90deg,
      rgba(16, 52, 76, 0.08) 0,
      rgba(16, 52, 76, 0.08) 1px,
      transparent 1px,
      transparent 56px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(16, 52, 76, 0.06) 0,
      rgba(16, 52, 76, 0.06) 1px,
      transparent 1px,
      transparent 56px
    );
  color: var(--text-muted);
  text-align: center;
}

.table {
  margin-bottom: 0;
}

.table-card .table thead th {
  color: var(--text-muted);
  font-weight: 600;
}

.devices-table-card,
.devices-table-responsive {
  overflow: visible;
}

.devices-table-responsive .devices-row-actions {
  display: inline-block;
}

.devices-table-responsive .devices-row-actions-menu {
  min-width: 12rem;
}

.devices-table-responsive .devices-row-actions .dropdown-menu.show {
  position: static;
  transform: none !important;
  inset: auto !important;
  float: none;
  margin-top: 0.4rem;
}

.badge-soft {
  display: inline-flex;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(14, 165, 164, 0.14);
  color: var(--accent-dark);
  font-weight: 700;
}

.user-chip {
  display: inline-flex;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 0.92rem;
}

.auth-shell {
  display: flex;
  justify-content: center;
  padding: 3rem 0 1rem;
}

.auth-card {
  width: min(100%, 32rem);
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.auth-eyebrow {
  background: rgba(14, 165, 164, 0.12);
  color: var(--accent-dark);
}

.auth-form .form-control {
  border-radius: 14px;
  padding: 0.9rem 1rem;
}

.form-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.device-section + .device-section {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.assignment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.assignment-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(14, 165, 164, 0.05);
}

.assignment-item input {
  margin-bottom: 0.35rem;
}

.assignment-item small {
  color: var(--text-muted);
}

.decoder-help {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(14, 165, 164, 0.05);
  overflow: hidden;
}

.decoder-help summary {
  cursor: pointer;
  padding: 0.9rem 1rem;
  font-weight: 600;
  list-style: none;
}

.decoder-help summary::-webkit-details-marker {
  display: none;
}

.decoder-help-body {
  padding: 0 1rem 1rem;
}

.decoder-help pre {
  margin: 0.75rem 0;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: #0f1f2d;
  color: #f7fbfc;
  white-space: pre-wrap;
  word-break: break-word;
}

.decoder-help code {
  font-size: 0.92rem;
}

.token-value-box {
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: rgba(15, 31, 45, 0.92);
  color: #f7fbfc;
  word-break: break-all;
}

.footer {
  flex-shrink: 0;
  margin-top: 3rem;
  padding: 1.25rem 0 2rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 991.98px) {
  .hero-section,
  .metric-grid,
  .feature-grid,
  .panel-grid,
  .assignment-grid,
  .dashboard-hero-grid,
  .dashboard-filter-grid,
  .dashboard-sensor-grid,
  .dashboard-summary-grid,
  .dashboard-main-grid,
  .dashboard-latest-grid,
  .dashboard-chart-grid-inner {
    grid-template-columns: 1fr;
  }

  .dashboard-toolbar-actions,
  .dashboard-status-row {
    align-items: stretch;
    flex-direction: column;
  }

  .devices-table-responsive {
    overflow-x: auto;
    overflow-y: visible;
  }
}