:root {
  --bg: #10130f;
  --ink: #f3efe4;
  --muted: #9c978c;
  --line: rgba(243, 239, 228, 0.1);
  --card: #1a1e18;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(196, 154, 74, 0.16), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.board {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: clamp(1.25rem, 3vw, 2.5rem);
}

.board__head,
.board__foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
}

.board__kicker,
.sensor__kind,
.board__mode,
.board__date,
.board__foot {
  margin: 0;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--muted);
}

.board__title {
  margin: 0.2rem 0 0;
  font-weight: 500;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.board__meta {
  text-align: right;
}

.board__clock {
  display: block;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
}

.board__mode {
  margin-top: 0.35rem;
  color: #d7b56a;
}

.sensors {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  align-content: stretch;
}

.sensor {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 11rem;
  padding: 1.15rem 1.25rem 1rem;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent, #8eb7c4) 18%, transparent), transparent 42%),
    var(--card);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  box-shadow: inset 3px 0 0 var(--accent, #8eb7c4);
}

.sensor--outdoor {
  grid-column: span 3;
}

.sensor__name {
  margin: 0.35rem 0 0;
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  font-weight: 560;
}

.sensor__temp {
  margin: 0.6rem 0 0;
  display: flex;
  align-items: flex-start;
  gap: 0.25rem;
}

.sensor__value {
  font-variant-numeric: tabular-nums;
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--accent, var(--ink));
  transition: color 0.6s ease;
}

.sensor__unit {
  margin-top: 0.35rem;
  font-size: 1.3rem;
  color: var(--muted);
}

.sensor__trend {
  margin: 0.8rem 0 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.sensor__trend[data-dir="up"] {
  color: #e0b15a;
}

.sensor__trend[data-dir="down"] {
  color: #8eb7c4;
}

.board__foot {
  align-items: center;
  justify-content: flex-start;
}

.live {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #d7b56a;
  box-shadow: 0 0 0 0 rgba(215, 181, 106, 0.6);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 8px transparent;
  }
}

@media (max-width: 800px) {
  .sensors,
  .sensor,
  .sensor--outdoor {
    grid-template-columns: 1fr;
    grid-column: auto;
  }

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

@media (prefers-reduced-motion: reduce) {
  .live {
    animation: none;
  }

  .sensor__value {
    transition: none;
  }
}