body {
  font-family: Arial, sans-serif;
  background-color: #2f2f2f;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  padding: 1rem;
}

.container {
  text-align: center;
}

.card {
  width: 320px;
  height: 220px;
  perspective: 1000px;
  margin-bottom: 20px;
  cursor: pointer;
  user-select: none;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.7);
  border-radius: 16px;
  background-color: #1e1e1e;
}

.card.flipped .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 16px;
  padding: 24px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid #333;
}

.card-front {
  background: #222;
}

.card-back {
  background: #2a2a2a;
  transform: rotateY(180deg);
}

h2 {
  margin: 0 0 12px 0;
  font-weight: 700;
}

p {
  font-size: 1.1rem;
  line-height: 1.4;
  color: #ddd;
}

button#new-question {
  padding: 10px 24px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background-color: #ffffff;
  color: #121212;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button#new-question:hover {
  background-color: #bdbdbd;
}

@media (max-width: 480px) {
  body {
    height: auto;
    overflow-y: auto;
    align-items: flex-start;
    padding: 2rem 1rem 10rem 1rem;
  }

  .card {
    margin-top: 10rem;
  }
}