:root {
  color-scheme: dark;
  --background: #08111e;
  --surface: #101d2e;
  --surface-light: #16263a;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f4f7fb;
  --muted: #91a0b5;
  --temperature: #ff9f43;
  --humidity: #3ba8ff;
  --success: #35d07f;
  --danger: #ff5c6c;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top left, #183354 0, transparent 35%),
    var(--background);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 28px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 30px;
}

.eyebrow {
  margin: 0 0 7px;
  color: #69bfff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 7px;
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
}

.subtitle {
  margin-bottom: 0;
  color: var(--muted);
}

.status {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.87rem;
  font-weight: 700;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--muted);
}

.status.online .status-dot {
  background: var(--success);
  box-shadow: 0 0 12px var(--success);
}

.status.offline .status-dot {
  background: var(--danger);
}

.main-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.metric-card,
.summary-card,
.chart-card,
.technical-card {
  border: 1px solid var(--border);
  background: rgba(16, 29, 46, 0.88);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.16);
}

.metric-card {
  position: relative;
  overflow: hidden;
  min-height: 205px;
  padding: 26px;
  border-radius: 22px;
}

.metric-card::after {
  position: absolute;
  right: -45px;
  bottom: -65px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  content: "";
  filter: blur(6px);
  opacity: 0.14;
}

.metric-card.temperature::after {
  background: var(--temperature);
}

.metric-card.humidity::after {
  background: var(--humidity);
}

.metric-label {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.metric-value {
  position: relative;
  z-index: 1;
  margin: 16px 0 8px;
  font-size: clamp(3.3rem, 10vw, 5.3rem);
  font-weight: 750;
  line-height: 1;
  letter-spacing: -0.065em;
}

.temperature .metric-value {
  color: var(--temperature);
}

.humidity .metric-value {
  color: var(--humidity);
}

.metric-unit {
  margin-left: 5px;
  font-size: 0.36em;
  letter-spacing: 0;
  vertical-align: top;
}

.metric-message {
  color: var(--muted);
  font-size: 0.87rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.summary-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: 16px;
}

.summary-label,
.technical-card span {
  color: var(--muted);
  font-size: 0.78rem;
}

.summary-card strong {
  margin: 8px 0 4px;
  font-size: 1.35rem;
}

.summary-card small {
  color: #6f8096;
}

.chart-card {
  margin-top: 18px;
  padding: 24px;
  border-radius: 22px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 22px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-size: 0.78rem;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.legend-line {
  display: inline-block;
  width: 20px;
  height: 3px;
  border-radius: 4px;
}

.temp-line {
  background: var(--temperature);
}

.humidity-line {
  background: var(--humidity);
}

.chart-container {
  position: relative;
  width: 100%;
  height: 330px;
}

#historyChart {
  width: 100%;
  height: 100%;
}

.empty-chart {
  position: absolute;
  inset: 45% 0 auto;
  display: none;
  color: var(--muted);
  text-align: center;
}

.technical-card {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
  border-radius: 16px;
}

.technical-card div {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 20px;
}

.technical-card div + div {
  border-left: 1px solid var(--border);
}

.technical-card strong {
  overflow: hidden;
  font-size: 0.95rem;
  text-overflow: ellipsis;
}

footer {
  padding-top: 24px;
  color: #65758b;
  font-size: 0.76rem;
  text-align: center;
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 22px, 1180px);
    padding-top: 26px;
  }

  .header {
    align-items: flex-start;
  }

  .main-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .technical-card {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .technical-card div + div {
    border-left: none;
  }

  .technical-card div:nth-child(even) {
    border-left: 1px solid var(--border);
  }

  .technical-card div:nth-child(n + 3) {
    border-top: 1px solid var(--border);
  }

  .chart-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .chart-container {
    height: 280px;
  }
}

@media (max-width: 480px) {
  .header {
    flex-direction: column;
  }

  .status {
    align-self: flex-start;
  }

  .metric-card {
    min-height: 185px;
  }

  .metric-value {
    font-size: 3.7rem;
  }
}