:root{
  --color-correct:#8FC93A;
  --color-present:#E18335;
  --color-absent:#3a3a3a;
  --color-default:#121212;
  --color-text:#ffffff;
  --tile-active:#818384;
  --bg:#1e1e1e;

}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:'Helvetica Neue',Arial,sans-serif;
}

body{
  background-color:var(--color-default);
  color:var(--color-text);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  height:100vh;
  overflow:hidden;
  padding:10px 0;
}

header{
  border-bottom:1px  solid var(--color-absent);
  width:100%;
  text-align:center;
  padding:10px 0;
  margin-bottom:10px;
  letter-spacing:2px;
 
  font-weight:700;

  font-size:1.2rem;
}

#board{
  display:grid;
  grid-template-rows:repeat(5,1fr);
  gap:5px;
  padding:10px;
  flex-grow:1;
  justify-content:center;
  align-content:center;
}

.board_row{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap:5px;
}

.tile{
  width:50px;
  height:55px;
  border:2px solid var(--color-absent);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight:bold;
  text-transform:uppercase;
}

.tile[data-status="active"]{
  border-color:var(--tile-active);
  animation:pop 0.1s;
}

.tile.correct{
  background-color:var(--color-correct);
  border-color:var(--color-correct);
}
.tile.present{
  background-color: var(--color-present);
  border-color: var(--color-present);
}
.tile.absent {
  background-color: var(--color-absent);
  border-color: var(--color-absent);
}

/* virtual keyboard */
.keyboard{
  width:100%;
  max-width:500px;
  padding:10px;
  padding-bottom:30px;
}

.keyboard_row{
  display:flex;
  justify-content:center;
  gap:6px;
  margin-bottom:6px;
}

.key{
  font-weight:bold;
  border:0;
  height:58px;
  border-radius:4px;
  cursor:pointer;
  user-select:none;
  background-color: #818384;
  color:#ffffff;
  flex:1;
  display:flex;
  justify-content: center;
  align-items:center;
  font-size: 1rem;
  touch-action:manipulation;
}

.key#enter, .key#del{
  flex:1.5;
  font-size: 1rem;
}

.key.correct{background-color: var(--color-correct);}
.key.present{background-color: var(--color-present);}
.key.absent{background-color: var(--color-absent);}

/* toast mesage */
.toast_container{
  position:absolute;
  top:10%;
  left:50%;
  transform:translateX(-50%);
  z-index:50;
  pointer-events:none;
}
.toast{
  background-color: #E4CC37;
  color: #1e1e1e;
  padding:10px 20px;
  border-radius:4px;
  font-weight:bold;
  text-align: center;
  margin-bottom:10px;
  font-size: 1rem;
  opacity:0;
  transition:opacity 0.3s;
}
.toast.show{
  opacity:1;
}

/* end */
#cover {
  position:fixed;
  top:0; left:0;
  width:100%; 
  height:100%;
  background-color:rgba(0,0,0,0.6);

  display:flex;
  justify-content:center;
  align-items:center;
  z-index:1000;
  opacity:0;
  pointer-events:none;
  transition:opacity 0.3s ease;
}

#cover.show{
  opacity:1;
  pointer-events:all;
}

.popup{
  background-color: var(--bg);
  border:1px  solid#565758;
  padding:30px;
  border-radius:8px;
  text-align:center;
  box-shadow:0 4px 20px rgba(0,0,0,0.5);
  width:90%;
  max-width:300px;
  transform:translateY(20px);
  transition:transform 0.3s ease;
}

#cover.show .modal-content {
  transform:translateY(0);
}

#pop_title{
  font-size:1.5rem;
  margin-bottom:10px;
  font-weight:bold;
}

#pop_msg{
  margin-bottom:20px;
  color:#ffffff;
}

#btn_restart{
  background-color:var(--color-correct);
  color:#ffffff;
  border:none;
  padding:12px 24px;
  font-size: 1rem;
  border-radius: 20px;
  cursor:pointer;
  font-weight: bold;
  width:100%;
}

#btn_restart:hover{ opacity:0.9;}

@media (min-width:600px) {
  header{
    font-size:2rem;
    padding:20px 0;
  }
  
}