#bmi-calculator .bmi-wrapper {
  background: #1c1c1e;
  padding: 30px;
  border-radius: 10px;
  color: #fff;
  max-width: 480px;
  margin: 40px auto;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
  font-family: 'Segoe UI', sans-serif;
}

#bmi-calculator h2 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 26px;
}

#bmi-calculator form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

#bmi-calculator input,
#bmi-calculator select,
#bmi-calculator button {
  padding: 10px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
}

#bmi-calculator input,
#bmi-calculator select {
  background: #2c2c2e;
  color: #fff;
}

#bmi-calculator button {
  background: #0077b6;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

#bmi-calculator button:hover {
  background: #005f8d;
}

#bmi-calculator .result {
  margin-top: 20px;
  font-size: 18px;
  text-align: center;
}

#bmi-calculator .export-buttons {
  display: flex;
  justify-content: space-around;
  margin-top: 20px;
  flex-wrap: wrap;
}

#bmi-calculator canvas {
  display: block;
  margin: 30px auto 0;
}