* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  overflow: hidden;
}

.landscape {
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  background-image: url("blue-background.jpeg");
  background-size: cover;
  transition: all 1s ease-in-out;
}

.person {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background-color: rgb(255, 247, 247);
  border-radius: 20px 20px 0 0;
  clip-path: polygon(0% 33%, 0% 100%, 100% 100%, 100% 33%, 85% 33%, 85% 10%, 80% 10%, 80% 0, 60% 0, 60% 10%, 55% 10%, 55% 33%, 40% 33%, 40% 10%, 35% 10%, 35% 0, 25% 0, 25% 10%, 20% 10%, 20% 33%);
  animation: walk 8s linear infinite;
  animation-delay: 1s;
}

/* Keyframes for person walking animation */
@keyframes walk {
  0% {
    transform: translateX(-100%);
  }
  25% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(20%);
  }
  75% {
    transform: translateX(40%);
  }
  100% {
    transform: translateX(100%);
  }
}

.tree {
  position: absolute;
  top: 100px;
  left: 0;
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  border-bottom: 100px solid green;
  animation: grow-tree 2s ease-out forwards, sway-tree 5s ease-in-out infinite alternate, move-tree 20s linear infinite;
  transform-origin: bottom center;
}

@keyframes move-tree {
  0% {
    left: 0;
  }
  100% {
    left: 100%;
  }
}

@keyframes grow-tree {
  0% {
    width: 0;
    height: 0;
  }
  100% {
    width: 100px;
    height: 200px;
  }
}

@keyframes sway-tree {
  0% {
    transform: rotateZ(0deg);
  }
  100% {
    transform: rotateZ(10deg);
  }
}

.tree1 {
  left: 100px;
}

.tree2 {
  right: 100px;
}

.mountain {
  position: absolute;
  top: 500px;
  left: 0;
  width: 0;
  height: 0;
  border-left: 150px solid transparent;
  border-right: 150px solid transparent;
  border-bottom: 150px solid gray;
  animation: move-mountain 20s linear infinite, float-mountain 5s ease-in-out infinite alternate;
  transform-origin: bottom center;
}

@keyframes move-mountain {
  0% {
    left: 0;
  }
  100% {
    left: 100%;
  }
}

@keyframes float-mountain {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-50px);
  }
}

.river {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  animation: flow-river 5s linear infinite alternate;
  background: linear-gradient(to right, blue, lightblue);
}

@keyframes flow-river {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.house {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  transform: translate(-50%, -50%);
  animation: move-house 10s linear infinite alternate;
}

.house:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100px;
  background: rgb(238, 208, 208);
  clip-path: polygon(0 0, 100% 0, 90% 50%, 100% 100%, 0 100%);
}

.house:after {
  content: "";
  position: absolute;
  bottom: -20;
  left: 50px;
  width: 100px;
  height: 100px;
  background: white;
  transform: skew(-20deg);
}

@keyframes move-house {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.expand-button {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
}

.arrow {
  display: inline-block;
  height: 50px;
  width: 50px;
  border: 3px solid white;
  border-top: none;
  border-right: none;
  margin-right: 10px;
  position: relative;
  animation: glow 2s infinite;
}

.arrow:last-child {
  margin-right: 0;
}

.arrow:before {
  content: '';
  display: block;
  border-style: solid;
  border-color: white transparent transparent transparent;
  border-width: 16px 16px 0 16px;
  position: absolute;
  left: 50%;
  bottom: -30px;
  transform: translateX(-50%);
  animation: glow 1s ease-in-out infinite;
}

.expand-button:hover .arrow:before {
  animation: none;
}

/* Keyframes for person walking animation */
@keyframes walk {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Keyframes for arrow glowing animation */
@keyframes glow {
  0% { box-shadow: 0 0 10px 0 rgba(255, 255, 255, 0.5); }
  50% { box-shadow: 0 0 20px 10px rgba(255, 255, 255, 0.5); }
  100% { box-shadow: 0 0 10px 0 rgba(255, 255, 255, 0.5); }
}

/* Styles for expanding the landscape */
.landscape.expand {
  height: auto;
  padding-bottom: 20vh;
  transition: all 1s ease-in-out;
}

.landscape.expand .person {
  animation: none;
}

.landscape.expand .tree {
  position: static;
  margin-bottom: 10vh;
}

.landscape.expand .mountain {
  position: static;
  margin-bottom: 10vh;
}

.landscape.expand .house {
  position: static;
  margin-bottom: 10vh;
}

.landscape.expand .river {
  position: static;
  height: 30vh;
  margin-bottom: 10vh;
}

/* Styles for arrow bouncing animation */
.expand-button:hover .arrow {
  animation: bounce 0.5s linear;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}