#rockInputs {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.rock-label {
  font-weight: bold;
  color: #111827;
  margin-bottom: 0.25rem;
  text-align: left;
  padding-top: 0.75rem;     /* ADDED */
  padding-bottom: 0.25rem;  /* ADDED */
  display: block;
}

.rock-input,
#unitSystem,
select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  font-size: 1rem;
  display: block;
}

#rockCalcBtn {
  background-color: #fbbf24;
  color: black;
  padding: 0.75rem 1rem;
  margin-top: 1.5rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  font-size: 1rem;
}

#rockCalcBtn:hover {
  background-color: #0ea5e9;
  color: white;
}

#rockResults {
  margin-top: 2rem;
  padding: 1rem;
  background: #f1f5f9;
  border-radius: 6px;
  color: #111827;
  font-size: 1rem;
  line-height: 1.6;
  display: block;
}

.calculator-wrapper {
  max-width: 720px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid #e5e7eb;
}