
.reverb-calculator-container {
  max-width: 500px;
  margin: 40px auto;
  padding: 20px;
  background: #121212;
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.4);
  font-family: 'Poppins', sans-serif;
}
.reverb-calculator-container input {
  width: 100%;
  padding: 10px;
  margin: 8px 0 16px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
}
.reverb-calculator-container button {
  width: 100%;
  background: #68CB5B;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
}
.reverb-calculator-container button:hover {
  background: #5bb14e;
}
.result-box, .reverb-section {
  margin-top: 20px;
  background: #1e1e1e;
  padding: 15px;
  border-radius: 8px;
}
@media (max-width: 600px) {
  .reverb-calculator-container { padding: 15px; }
}
