.bmi-card {
  max-width: 480px;
  margin: 30px auto;
  padding: 22px;
  border-radius: 18px;
  background: linear-gradient(180deg, #ecfeff, #ffffff);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  font-family: system-ui, sans-serif;
}

.bmi-card h1 {
  text-align: center;
}

label {
  font-weight: 600;
  margin-top: 12px;
  display: block;
}

input, select {
  width: 100%;
  padding: 10px;
  margin-top: 4px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

button {
  width: 100%;
  margin-top: 18px;
  padding: 14px;
  background: #06b6d4;
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: #0891b2;
}

#result {
  margin-top: 20px;
  padding: 16px;
  background: #f0fdfa;
  border-radius: 12px;
  text-align: center;
}

.note {
  font-size: 12px;
  color: #555;
  margin-top: 12px;
  display: block;
}