body {
  background-image: linear-gradient(145deg, #5eb1ff,#0084ff);
  color: white;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.quiz-container {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 2rem;
  border-radius: 20px;
  width: 90%;
  max-width: 500px;
  text-align: center;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.2);
  animation: fadeIn 0.5s ease;
}

.hidden {
  display: none;
}

h1, h2 {
  margin-bottom: 1rem;
  color: #4dcdff; ;
}

#question {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  transition: opacity 0.4s ease;
}

.btn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

button {
  padding: 12px;
  border: none;
  border-radius: 12px;
  background-color: #40b3ff;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s, background 0.3s;
}

button:hover {
  background-color: #3190cf;
  transform: scale(1.05);
}

#score {
  margin-top: 20px;
  font-weight: bold;
  color: #ffffff;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}