.calc-box {
  max-width: 600px;
  border: 1px solid var(--border);
  padding: 16px;
  margin: 20px 0;
  border-radius: 12px;
  background: #f9fbff;
}

.calc-box-wide {
  max-width: 100%;
}

.calc-box h3 {
  margin-bottom: 0.5rem;
}

.calc-help {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 0.75rem;
}

.calc-note {
  font-size: 0.78rem;
  color: #777;
  margin-top: 8px;
}

.calc-result {
  margin-top: 12px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.calc-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.calc-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 8px;
}

.calc-tag-accent {
  color: var(--accent);
}

.calc-range-label {
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
}

.calc-select,
.calc-input {
  width: 100%;
  margin-bottom: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
}

.calc-season-buttons {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.calc-season-buttons button {
  flex: 1;
  padding: 6px 4px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: #f9fbff;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}