body {
  background-color: #0e0e0e;
  color: #f04c4c;
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  padding: 40px;
}

#captcha-container {
  background-color: #1a1a1a;
  padding: 20px;
  border-radius: 10px;
  display: inline-block;
}

#image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

#image-grid img {
  width: 100%;
  height: auto;
  border: 3px solid transparent;
  cursor: pointer;
  border-radius: 8px;
  transition: transform 0.2s ease;
}

#image-grid img.selected {
  border-color: limegreen;
  transform: scale(1.05);
}

button {
  background: #f04c4c;
  border: none;
  color: white;
  padding: 10px 20px;
  margin-top: 10px;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
}

button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.proceed {
  margin-top: 30px;
  background-color: #0be881;
}