@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  background: #6563FF;
}
.wrapper{
  padding: 25px;
  border-radius: 10px;
  background: #F8F8F8;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  position: relative;
  z-index: 1;
}
.game-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.timer {
  font-size: 18px;
  font-weight: 500;
  color: #333;
}
.refresh-btn {
  background: #6563FF;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.3s ease;
}
.refresh-btn:hover {
  background: #4e4cda;
}
.cards, .card, .view{
  display: flex;
  align-items: center;
  justify-content: center;
}
.cards{
  height: 400px;
  width: 400px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.cards .card{
  cursor: pointer;
  list-style: none;
  user-select: none;
  position: relative;
  perspective: 1000px;
  transform-style: preserve-3d;
  height: calc(100% / 4 - 10px);
  width: calc(100% / 4 - 10px);
}
.card.shake{
  animation: shake 0.35s ease-in-out;
}
@keyframes shake {
  0%, 100%{
    transform: translateX(0);
  }
  20%{
    transform: translateX(-13px);
  }
  40%{
    transform: translateX(13px);
  }
  60%{
    transform: translateX(-8px);
  }
  80%{
    transform: translateX(8px);
  }
}
.card .view{
  width: 100%;
  height: 100%;
  position: absolute;
  border-radius: 7px;
  background: #fff;
  pointer-events: none;
  backface-visibility: hidden;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  transition: transform 0.25s linear;
}
.card .front-view img{
  width: 19px;
}
.card .back-view img{
  max-width: 45px;
}
.card .back-view{
  transform: rotateY(-180deg);
}
.card.flip .back-view{
  transform: rotateY(0);
}
.card.flip .front-view{
  transform: rotateY(180deg);
}

.win-dialog {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.win-dialog.show {
  opacity: 1;
  visibility: visible;
}

.win-content {
  background-color: #fff;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transform: scale(0.8);
  transition: transform 0.3s ease;
  max-width: 90%;
  width: 350px;
}

.win-dialog.show .win-content {
  transform: scale(1);
}

.win-content h2 {
  color: #6563FF;
  margin-bottom: 15px;
}

.win-content p {
  margin-bottom: 20px;
  font-size: 18px;
}

#completionTime {
  font-weight: 700;
  color: #6563FF;
}

#playAgainBtn {
  background: #6563FF;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.3s ease;
}

#playAgainBtn:hover {
  background: #4e4cda;
}

@media screen and (max-width: 700px) {
  .cards{
    height: 350px;
    width: 350px;
  }
  .card .front-view img{
    width: 17px;
  }
  .card .back-view img{
    max-width: 40px;
  }
}

@media screen and (max-width: 530px) {
  .cards{
    height: 300px;
    width: 300px;
  }
  .card .front-view img{
    width: 15px;
  }
  .card .back-view img{
    max-width: 35px;
  }
  .game-info {
    flex-direction: column;
    gap: 10px;
  }
}

@media screen and (max-width: 380px) {
  .wrapper {
    padding: 14px;
  }

  .cards {
    width: 272px;
    height: 272px;
  }

  .card .front-view img {
    width: 13px;
  }

  .card .back-view img {
    max-width: 30px;
  }
}