@import url('https://fonts.googleapis.com/css2?family=Alfa+Slab+One&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Alfa Slab One', sans-serif;
}

.footer {
  position: fixed;
  bottom: 10px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .5px;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  z-index: 100;
  user-select: none;
}

body {
  width: 100vw;
  height: calc(var(--vh, 1vh) * 100);
  display: grid;
  place-content: center;
  overflow: hidden;
  background: rgb(45, 44, 61);
}

.game {
  width: 480px;
  height: 640px;
  border: 1px solid rgb(0, 0, 0);
  position: relative;
  overflow: hidden;
}

.sky {
  width: 100%;
  height: 80%;
  background-image: url("Images/sky1.png");
  background-size: cover;
  position: relative;
}

.ground {
  background: rgb(151, 75, 21);
  width: 100%;
  height: 20%;
  border-top: 3px solid black
}

.bird {
  width: 45px;
  height: 30px;
  display: inline-block;
  position: absolute;
  left: 32%;
  top: 40%;
  user-select: none;
  display: flex;
  justify-content: center;
  align-items: center;
}

.bird img{
  width: 110%;
  height: auto;
  user-select: none;
}

.score {
  position: relative;
  font-size: 3rem;
  font-weight: 400;
  padding-top: .5em;
  text-align: center;
  z-index: 10;
  user-select: none;
}

.obstacleContainer {
  display: flex;
  min-height: 300px;
  height: 40%;
  align-items: flex-end;
  min-width: 10px;
  width: fit-content;
  position: absolute;
  left: 100%;
}

.obstacleContainer2 {
  position: relative;
  left: 100%;
  min-width: 10px;
  display: flex;
  height: 40%;
  min-height: 300px;
  align-items: flex-start;
  width: fit-content;
  top: -100%;
}

.obstacle {
  width: 70px;
  background: mediumseagreen;
  border-left: 3px solid black;
  border-right: 3px solid black;
  border-top: 3px solid black;
  height: 100px;
  position: relative;
}

.obstacle2 {
  border-bottom: 3px solid black;
  border-top: none;
}

.gameOver {
  display: none;
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
}

.gameOverBox {
  width: 70%;
  max-width: 250px;
  height: 160px;
  background: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  border-radius: 10px;
  border: 3px solid black;
  user-select: none;
}

.restartMessage {
  text-align: center;
}

@media screen and (max-width: 500px) {
  .game {
    width: 100vw;
    height: calc(var(--vh, 1vh) * 100);
    border: none;
  }

  .sky {
    height: 90%;
  }
  
  .ground {
    height: 10%;
  }
}