.calculator {
  background: #04003f;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgb(0, 255, 255);
  width: 350px;
}
.calculator h2 {
  color: #0059ff;
  text-align: center;
  margin-bottom: 20px;
}
label {
  display: block;
  margin-top: 15px;
  font-size: 0.9rem;
  color: #bbb;
}
input, select {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  background: #2a2a2a;
  border: 1px solid #690000;
  border-radius: 6px;
  color: #fff;
}
input:focus, select:focus {
  border-color: #ff0044;
  box-shadow: 0 0 8px #ff0044;
  outline: none;
}
input[type="file"] {
  margin-top: 10px;
  color: #fff;
}
button {
  width: 100%;
  padding: 12px;
  margin-top: 20px;
  background: #020066;
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
  font-weight: bold;
}
button:hover {
  background: #00b7ff;
  color: #2a2a2a;
}
.result {
  margin-top: 20px;
  text-align: center;
  font-size: 1.2rem;
  color: #00ff99;
}
#weightDisplay {
  margin-top: 8px;
  color: #9fd;
}

.des {
  color: #9fd;
}