body {
  font-family: sans-serif;
  margin: 0;
  padding: 20px;
  background: url("arabic-bg.png") no-repeat center center fixed;
  background-size: cover;
}
h1 {
  text-align: center;
  color: #fff;
  text-shadow: 1px 1px 2px #000;
}
#level-info {
  text-align: center;
  font-size: 1.5em;
  margin-bottom: 20px;
  color: #fff;
  text-shadow: 1px 1px 2px #000;
}
#card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  padding: 10px;
}
.card {
  perspective: 1000px;
}
.card-inner {
  position: relative;
  width: 100%;
  height: 150px;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  cursor: pointer;
}
.card.flipped .card-inner {
  transform: rotateY(180deg);
}
.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 1px solid #ccc;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  backface-visibility: hidden;
  font-size: 2em;
  background-color: rgba(255, 255, 255, 0.9);
}
.card-front {
  direction: rtl;
  text-align: center;
}
.card-back {
  background-color: rgba(223, 240, 216, 0.9);
  transform: rotateY(180deg);
}
#controls {
  text-align: center;
  margin-top: 20px;
}
#next-level-btn, #restart-btn {
  padding: 10px 20px;
  font-size: 1.2em;
  cursor: pointer;
  margin: 0 5px;
}