*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* fonts */
.pacifico-regular {
  font-family: "Pacifico", cursive, sans-serif;
  font-weight: 400;
  font-style: normal;
}

/* Dark backgroung */
.dark-bg{
  background-color: #08313b;
  color: white;  
}

/* main font of the document */
.font-main{
  font-family: "Nunito Sans", sans-serif;
  font-optical-sizing: auto;
  font-style: normal;
}

/* display*/
.d-none{
  display: none !important;
}
.d-flex{
  display: flex;
}
.fj-center{
  justify-content: center;
}
.fa-center{
  align-items: center;
}
.f-row{
  flex-direction: row;
}
.f-col{
  flex-direction: column;
}

.h-100{
  height: 100%;
}

.w-100{
  width: 100%;
}

.wv-100{
  max-width: 100vw;
  min-width: 100%;
}

.hv-100{
  min-height: 100vh;
}

/* animation */
.drop-text span:nth-child(1){
  display: inline-block;
  transform: translateY(-200px);
  opacity: 0;
  animation: drop 0.3s forwards;
}
.drop-text span:nth-child(2){
  display: inline-block;
  transform: translateY(-200px);
  opacity: 0;
  animation: drop 0.6s forwards;
}
.drop-text span:nth-child(3){
  display: inline-block;
  transform: translateY(-200px);
  opacity: 0;
  animation: drop 0.9s forwards;
}
.drop-text span:nth-child(4){
  display: inline-block;
  transform: translateY(-200px);
  opacity: 0;
  animation: drop 1.2s forwards;
}
.drop-text span:nth-child(5){
  display: inline-block;
  transform: translateY(-200px);
  opacity: 0;
  animation: drop 1.5s forwards;
}

@keyframes drop {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* main heading */
h2{
  text-align: center;
  font-size: 50px;
  padding: 20px;
  letter-spacing: 5px;
}
/* welcome page */
.welcome{
  position: fixed;
  background-color: #08313b;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  transition: opacity 0.5s ease, filter 0.5s ease;
  opacity: 1;
  filter: blur(0);
}

.welcome.exit {
  opacity: 0;
  filter: blur(8px);
}

.result{
  background-color: #08313bcc;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

.result div{
  font-size: 40px;
  margin-bottom: 10px;
}

.result button{
  display: block;
  padding: 10px 20px;
  background-color: #3c6172;
  color: white;   
  border: 1px solid;
  border-color: #3c6172;
  border-radius: 5px;
  box-shadow: none;
  font-size: 18px;
}

.result button:hover{
  cursor: pointer;
  color: #3c6172;
  background-color: #fafafa;   
}

/* bingo cards */
.bingo-card{        
  background-color: #967c9b;
  color: white;
  padding: 20px 30px;
  border-radius: 5px;
  box-shadow: 4px 4px 10px black;
  text-align: center;
  flex: 1; 
}
#my.bingo-card{
  background-color: #6a838f;
  margin-right: 20px;
}
#ai.bingo-card{
  background-color: #967c9b;
}

.row button{
  width: 80px;
  height: 80px;
  cursor: pointer;
  border: 1px solid #9e9e9e;
  background-color: initial;
  color: white;
  cursor: default;
}

#my .row button:hover:enabled{
  color: white;
  background-color: #2b5c74;
  cursor: pointer;
}

#my .row button.selected:hover{
  background-color: #6a838f;
}

/* button to change order */
#my button#numberOrder{
  margin-top: 20px;
  padding: 10px 20px;
  border-radius: 5px;
  background-color: #3c6172;
  color: white;
  font-size: 18px;
  box-shadow: none;
  border: 1px solid #3c6172;
}
#my button#numberOrder:hover:enabled{
  color: #3c6172;
  background-color: #f2f2f2;
  cursor: pointer;
}

/* hide numbers of ai bingo */
#ai .row button{
  color: transparent;
  cursor:default;
}

/* bingo numbers if selected */
button.selected,
button.selected{
  cursor: default;
  position: relative;
}
.selected::after,
.selected::before{
  position: absolute;
  content: "";
  top: 50%;
  left: 50%;
  width: 100%;
  height: 1px;
  background: #fafafa;
}
.selected::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.selected::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* bingo text */
#myBingo, #aiBingo{
  font-size: 18px;
  margin-bottom: 10px;
}
#myBingo span, #aiBingo span{
  display: inline-block;
  padding: 2px;
  margin-right: 2px;
  width: 35px;
  height: 35px;
}

/* highlight bingo letters based on the score */
span.set, span.set{
  color: white;
  border-radius: 50%;
  cursor: none;
}
#myBingo span.set{
  background-color: #3c6172;
}
#aiBingo span.set{
  background-color: #773084;
}
/* responsive design */
@media only screen and (max-width: 985px) {
  section {
    flex-direction: column;
  }
  .bingo-card{
    margin-top: 20px;
  }
  #my.bingo-card {
    margin-right: 0px;
  }
}

@media only screen and (max-width: 526px) {
  .row button{
    width: 50px;
    height: 50px;
  }
  #my button#numberOrder {
    margin-top: 15px;
    padding: 6px 15px;
    border-radius: 5px;
    font-size: 15px;
  }
  .welcome span{
    font-size: 28px;
  }
  .result div {
    font-size: 25px;
  }
}

@media only screen and (max-width: 350px) {
  .result div {
    font-size: 20px;
  }
}