* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: #111317;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.top-nav {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 8px 16px;
  background: #111317;
  border-bottom: 1px solid #2b303b;
}

.top-nav a {
  color: #98a4b3;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 8px;
  transition: all 0.2s;
}

.top-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}

.top-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.page { max-width: 600px; margin: 0 auto; padding: 16px; }
.page-title { font-size: 16px; font-weight: 600; margin-bottom: 12px; }

.card {
  background: #1e1f26;
  border: 1px solid #2b303b;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 8px;
}

.card-header { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.card-meta { font-size: 12px; color: #6b7280; margin-bottom: 6px; }

.label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 4px;
}
.label-blue { background: rgba(59,130,246,0.2); color: #60a5fa; }
.label-green { background: rgba(22,162,73,0.2); color: #16a249; }
.label-red { background: rgba(239,67,67,0.2); color: #ef4343; }
.label-grey { background: rgba(107,114,128,0.2); color: #98a4b3; }
.label-teal { background: rgba(20,184,166,0.2); color: #2dd4bf; }
.label-yellow { background: rgba(245,158,11,0.2); color: #f59e0b; }

.btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-green { background: #16a249; color: #fff; }
.btn-yellow { background: #f59e0b; color: #000; }
.btn-grey { background: #374151; color: #fff; }

.divider { border: none; border-top: 1px solid #2b303b; margin: 16px 0; }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th { text-align: left; color: #6b7280; padding: 6px 8px; border-bottom: 1px solid #2b303b; }
.table td { padding: 6px 8px; border-bottom: 1px solid rgba(43,48,59,0.5); }

.form-group { margin-bottom: 10px; }
.form-group label { display: block; color: #98a4b3; font-size: 12px; margin-bottom: 4px; }
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input:not([type]) {
  width: 100%;
  background: #111317;
  border: 1px solid #2b303b;
  color: #fff;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 13px;
}
.form-group input:focus { outline: none; border-color: #0480de; }

.full-width { width: 100%; }

.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 16px;
}

.login-card {
  background: #1e1f26;
  border: 1px solid #2b303b;
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 360px;
}

.login-card h2 {
  text-align: center;
  margin-bottom: 24px;
  font-size: 20px;
}

.error-text {
  color: #ef4343;
  font-size: 13px;
  margin-bottom: 8px;
}
.flash-value {
  transition: color 0.3s;
}

.flash-up {
  color: #16a249 !important;
  animation: flash-pulse 0.8s ease-out;
}

.flash-down {
  color: #ef4343 !important;
  animation: flash-pulse 0.8s ease-out;
}

@keyframes flash-pulse {
  0% { opacity: 1; }
  50% { opacity: 0.6; }
  100% { opacity: 1; }
}
.cell-grid-section {
  margin-bottom: 16px;
}

.cell-grid-title {
  color: #98a4b3;
  font-size: 14px;
  font-weight: 500;
  margin: 0 0 8px 0;
}

.cell-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}

.cell {
  background: #1e1f26;
  border: 1px solid #2b303b;
  border-radius: 6px;
  padding: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cell-idx {
  color: #6b7280;
  font-size: 11px;
  font-weight: 600;
}

.cell-value {
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.cell-max .cell-value {
  color: #60a5fa;
}

.cell-min .cell-value {
  color: #ef4343;
}
.chart-section {
  margin-top: 16px;
}

.chart-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  gap: 8px;
}

.chart-ranges {
  display: flex;
  gap: 4px;
}

.range-btn {
  background: #1e1f26;
  border: 1px solid #2b303b;
  color: #98a4b3;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}

.range-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.measure-select {
  background: #1e1f26;
  border: 1px solid #2b303b;
  color: #fff;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
}

.chart-container {
  position: relative;
}

.chart-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #6b7280;
  font-size: 13px;
}
.edge-status {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.edge-badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 500;
}

.edge-badge.online {
  background: rgba(22, 162, 73, 0.15);
  color: #16a249;
  border: 1px solid rgba(22, 162, 73, 0.3);
}

.edge-badge.offline {
  background: rgba(239, 67, 67, 0.15);
  color: #ef4343;
  border: 1px solid rgba(239, 67, 67, 0.3);
}

.edge-detail {
  margin-left: 6px;
  color: #6b7280;
  font-size: 11px;
}
.dashboard {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 16px;
}

.metric-card {
  background: #1e1f26;
  border: 1px solid #2b303b;
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
}

.metric-label {
  color: #98a4b3;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-value {
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}

.metric-value.big {
  font-size: 36px;
}

.metric-sub {
  color: #6b7280;
  font-size: 12px;
  margin-top: 2px;
}

.soc-card {
  grid-column: span 2;
  text-align: center;
  background: linear-gradient(135deg, #1e1f26, #252830);
}

.metric-card.charging {
  border-color: #16a249;
}

.metric-card.charging .metric-label {
  color: #16a249;
}

.metric-card.discharging .metric-label {
  color: #ef4343;
}

.metric-card.warning {
  border-color: #f59e0b;
}

.metric-card.warning .metric-value {
  color: #f59e0b;
}

.charge-on {
  color: #16a249 !important;
}

.charge-off {
  color: #6b7280 !important;
}