:root {
  --bg: #0f1720;
  --surface: #1a2530;
  --surface-2: #223140;
  --text: #eef2f6;
  --text-dim: #9fb0bf;
  --accent: #4ade80;
  --accent-dim: #22c55e;
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 14px;
  --gap: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  -webkit-text-size-adjust: 100%;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  padding: env(safe-area-inset-top) 16px 0 16px;
  border-bottom: 1px solid var(--surface-2);
}

.brand {
  display: block;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 12px 0 8px 0;
}

.nav {
  display: flex;
  gap: 18px;
  padding-bottom: 10px;
  overflow-x: auto;
}

.nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  white-space: nowrap;
  padding: 4px 0;
}

.nav a:hover,
.nav a:active {
  color: var(--accent);
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--gap) var(--gap) 48px var(--gap);
}

.page-title {
  font-size: 1.3rem;
  margin: 4px 0 var(--gap) 0;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--gap);
  margin-bottom: var(--gap);
}

.card-title {
  font-size: 1rem;
  margin: 0 0 12px 0;
  color: var(--text-dim);
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--surface-2);
}

.status-row:last-child {
  border-bottom: none;
}

.status-label {
  color: var(--text-dim);
  font-size: 0.95rem;
}
.status-value {
  font-weight: 600;
  font-size: 1rem;
}

.pill {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

.pill-on {
  background: rgba(74, 222, 128, 0.18);
  color: var(--accent);
}
.pill-off {
  background: rgba(159, 176, 191, 0.15);
  color: var(--text-dim);
}
.pill-warn {
  background: rgba(251, 191, 36, 0.18);
  color: var(--warn);
}

.chart-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.gns-label {
  color: var(--warn);
}

.bar-chart-wrap {
  position: relative;
}

.gns-line {
  position: absolute;
  left: 0;
  right: 0;
  border-top: 1px dashed var(--warn);
  opacity: 0.6;
  z-index: 1;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 100px;
  margin-bottom: 4px;
  position: relative;
  z-index: 2;
}

.bar {
  flex: 1;
  min-height: 3px;
  background: var(--accent-dim);
  border-radius: 3px 3px 0 0;
}

.bar-chart-labels {
  display: flex;
  gap: 3px;
  margin-bottom: 8px;
}

.hour-label {
  flex: 1;
  text-align: center;
  font-size: 0.68rem;
  color: var(--text-dim);
}

.chart-caption {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 0;
}

@media (orientation: landscape) {
  .hour-label {
    font-size: 0.78rem;
  }
  .bar-chart {
    height: 140px;
  }
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 12px;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--accent);
  color: #0f1720;
}

.btn-primary:active {
  background: var(--accent-dim);
}

.hint {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 8px;
}

.alert {
  border-radius: var(--radius);
  padding: 12px var(--gap);
  margin-bottom: var(--gap);
  font-size: 0.95rem;
}

.alert-info {
  background: rgba(74, 222, 128, 0.14);
  color: var(--accent);
}
.alert-error {
  background: rgba(248, 113, 113, 0.14);
  color: var(--danger);
}

label {
  display: block;
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 14px 0 6px 0;
}

label:first-child {
  margin-top: 0;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 12px;
  font-size: 1rem;
  color: var(--text);
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0;
  color: var(--text);
  font-size: 0.95rem;
}

.checkbox-row input {
  width: auto;
}

.login-wrap {
  padding-top: 20vh;
  text-align: center;
}

.login-wrap h1 {
  font-size: 1.4rem;
  margin-bottom: var(--gap);
}

.login-wrap form {
  text-align: left;
}

.log-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 12px;
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.75rem;
  overflow-x: auto;
}

.log-line {
  white-space: pre-wrap;
  word-break: break-word;
  padding: 4px 0;
  border-bottom: 1px solid var(--surface-2);
  color: var(--text-dim);
}

.log-line:last-child {
  border-bottom: none;
}

.log-warn {
  color: var(--warn);
}
.log-error {
  color: var(--danger);
}