/* body {
  margin: 0;
}

#ui {
  margin: 0;
  position: absolute;
  top: 10px;
  left: 10px;
}

h1 {
  color: whitesmoke;
} */





#game-container {
  display: grid;
  grid-template-columns: repeat(20, 60px);
  grid-template-rows: repeat(20, 60px);
  gap: 2px;
  /* margin-top: 650px; */
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -24%);
}




.cell {
  position: relative; /* Đảm bảo có thể sử dụng z-index */
  width: 60px;
  height: 60px;
  border: 1px solid #000;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  background-image: url('background.jpeg');
  background-size: cover;
}
.player {
  /* background-color: green; */
  background-image: url('player3.gif');
  background-size: cover;
}

.enemy {
  /* background-color: red; */
  background-image: url('enemies4.gif');
  background-size: cover;
  z-index: 10;
}

.exit {
  /* background-color: blue; */
  background-image: url(exit.gif);
}



.obstacle {
  background-color: brown;
  color: white;
  background-image: url('chuongngaivat.jpeg');
  background-size: cover;
  z-index: 1; /* Đặt z-index thấp hơn */
}

/* .path {
  background-image: url('path.jpeg');
  position: relative;
  z-index: 2; 
} */
.path {
  background-color: rgba(0, 255, 0, 0.3); /* Tô màu xanh nhạt cho đường đi */
  position: relative;
  z-index: 2000; /* Đảm bảo rằng ô đường đi có z-index cao hơn các ô khác */
}


.cell.path {
  /* background-color: rgba(0, 255, 0, 0.3);  */
  background-image: url('path.jpeg');
  z-index: 1000 ; /* Cao hơn các lớp khác */
}
 
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden; /* Loại bỏ cuộn */
}

.main-page {
  width: 100vw;
  height: 100vh;
  background-image: url('index_background.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  position: relative;
}

.player-element {
  position: absolute;
  top: 45%;
  border-radius: 200px;
  border: 1px solid #fff;
  width: 200px;
  height: 200px;
  background-image: url('player3.gif');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}


.btn-start {
  width: 300px;
  height: 200px;
  background-image: url('start_btn-removebg-preview.png');
  background-repeat: no-repeat;
  background-size: 300px;
  background-position: center;
  float: right;
  margin-top: 40px;
  margin-right: 150px;
  animation: scaleUpDown 1.5s ease-in-out infinite;
}
.btn-start2 {
  width: 300px;
  height: 200px;
  background-image: url('Mulai_Tombol_Permainan_Beralih_Efek_Stereo_Ikon__Permainan__Tombol__Saklar_PNG_Transparan_Clipart_dan_File_PSD_untuk_Unduh_Gratis-removebg-preview.png');
  background-repeat: no-repeat;
  background-size: 300px;
  background-position: center;
  float: right;
  margin-top: 40px;
  margin-right: 150px;
  animation: scaleUpDown 1.5s ease-in-out infinite;
}

/* Keyframes cho animation */
@keyframes scaleUpDown {
  0%, 100% {
    transform: scale(1); /* Kích thước ban đầu */
  }
  50% {
    transform: scale(1.2); /* To lên 20% */
  }
}

#btn_start {
  --bg: #e77e3c;
    --text-color: #fff;
    position: relative;
    width: 150px;
    border: none;
    background: var(--bg);
    color: var(--text-color);
    padding: 1em;
    font-weight: bold;
    text-transform: uppercase;
    transition: 0.2s;
    border-radius: 5px;
    opacity: 1;
    letter-spacing: 1px;
    box-shadow: #a76623 0px 7px 2px, #000 0px 8px 5px;
    float: right;
    position: absolute;
    right: 225px;
    top: 40%;
    animation: scale 3s ease-in-out infinite;
}

#btn_start:hover {
  opacity: 1;
  scale: 1.1;
}

#btn_start:active {
  top: 4px;
  box-shadow: #c0392b 0px 3px 2px,#000 0px 3px 5px;
}

.second-page {
  position: relative;
  display: flex;
  justify-content: center; /* Căn giữa theo chiều ngang */
  align-items: center;    /* Căn giữa theo chiều dọc */
  height: 100vh;   
}

#btn_start {
  position: absolute;
  top: 2%;
  left: 50%;
  transform: translateX(-50%);
}