* {
    margin: 40px auto;
    font-family: sans-serif;
    background-color: rgb(39, 161, 135);
    text-align: center;
}

button {
    font-size: 1.5rem;
    padding: 12px 24px;
    margin: 8px;
    border-radius: 8px;
    background-color: #3498db;
    color: white;
    cursor: pointer;
    transition: 0.2s ease;
}

button:hover {
    background-color: #2980b9;
}

#buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 16px 0;
}

#result-text {
    font-size: xx-large;
}


#result-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(39,161,135,0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#result-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.hidden {
  display: none;
}