body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #222;
}

.container {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 16px;
}

h1 {
  margin-bottom: 20px;
}

.card {
  background: white;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.big {
  font-size: 2rem;
  font-weight: bold;
}

.grid2, .grid3 {
  display: grid;
  gap: 10px;
}

.grid2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid3 {
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.temp-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  padding: 12px 14px;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  background: #2d6cdf;
  color: white;
  font-size: 14px;
}

button:hover {
  opacity: 0.92;
}

input[type="number"] {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #ccc;
  min-width: 100px;
}

pre {
  background: #111;
  color: #eee;
  padding: 12px;
  border-radius: 10px;
  overflow: auto;
  white-space: pre-wrap;
}

.error {
  color: #b00020;
}

.temp-circle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
  gap: 12px;
  justify-items: center;
}

.temp-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  background: #2d6cdf;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.temp-circle:hover {
  opacity: 0.92;
}