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

body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 16px;
  background: #1a1a2e;
  color: #eee;
  min-height: 100dvh;
}

h1 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

#status {
  color: #aaa;
  margin: 8px 0;
  font-size: 0.9rem;
}

.btn-group {
  display: flex;
  gap: 8px;
  margin: 12px 0;
}

button {
  flex: 1;
  background: #e94560;
  color: white;
  border: none;
  padding: 14px 0;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #c73650;
}

button:disabled {
  background: #555;
  cursor: not-allowed;
}

.temp-box {
  background: #16213e;
  border-radius: 16px;
  padding: 20px;
  margin: 12px 0;
}

.label {
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 6px;
}

.temp {
  font-size: 2.5rem;
  font-weight: bold;
}

.object { color: #e94560; }
.ambient { color: #0f3460; }

.chart-box {
  background: #16213e;
  border-radius: 16px;
  padding: 16px;
  margin: 12px 0;
  display: none;
}

.chart-box.visible {
  display: block;
}

.chart-box canvas {
  width: 100%;
  height: 200px;
  display: block;
  border-radius: 8px;
}

/* 데스크톱 */
@media (min-width: 481px) {
  body {
    padding: 24px;
    max-width: 600px;
    margin: 0 auto;
  }

  h1 {
    font-size: 1.8rem;
    margin-bottom: 12px;
  }

  .temp {
    font-size: 3rem;
  }

  .temp-box {
    padding: 30px;
    margin: 16px 0;
  }

  .chart-box canvas {
    height: 260px;
  }
}