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

body {
  height: 100vh;
  font-family: "Arial", sans-serif;
  background: #a19b9b;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: start;
  padding-top: 50px;
}

.title {
  font-size: 2rem;
  margin-bottom: 30px;
  color: #333;
  font-weight: bold;
}

.game-container {
  position: relative;
  width: 800px;
  height: 300px;
  background-color: #000000;
  border: 2px solid #333;
  overflow: hidden;
}
.dino-wrapper {
  position: absolute;
  bottom: -6px;
  left: 50px;
  width: fit-content;
  height: auto;
}
.dino {
  position: absolute;
  bottom: 34px;
  left: 50px;
  width: 60px;
  height: auto;
}
.dino_left_leg {
  position: absolute;
  bottom: 22px;
  left: 60px;
  width: 13px;
  height: auto;
  z-index: 2;
  animation: leg-move 0.3s infinite alternate;
  transform-origin: top center;
}
.dino_right_leg {
  position: absolute;
  bottom: 22px;
  left: 74px;
  height: 13px;
  z-index: 2;
  animation: leg-move 0.3s infinite alternate;
  animation-delay: 0.15s;
  transform-origin: top center;
}

@keyframes leg-move {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0);
  }
}
.cactus-container {
  position: absolute;
  bottom: 25px;
  right: 0;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.cactus {
  position: absolute;
  bottom: -3px;
  right: -22px;
  width: 62px;
  height: 66px;
  animation: move-cactus 4s linear infinite;
}
@keyframes move-cactus {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-3000%);
  }
}

.cloud-wrapper {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

/* Base cloud styling */
.cloud {
  display: inline-block;
  width: 100px;
  height: 60px;
  background-image: url("img/cloud.png");
  background-size: cover;
  background-repeat: no-repeat;
  position: absolute;
  top: 20px;
  animation: floatClouds 4.1s linear infinite;
}
.cloud1 {
  top: 20px;
  left: 100px;
}

.cloud2 {
  top: 60px;
  left: 300px;
  animation-delay: 1s;
}

.cloud3 {
  top: 40px;
  left: 500px;
  animation-delay: 2s;
}

/* Floating animation */
@keyframes floatClouds {
  0% {
    transform: translateX(100vw);
  }
  100% {
    transform: translateX(-200px); /* Off-screen to the left */
  }
}

.track {
  position: absolute;
  bottom: 12px;
  left: 0;
  width: 200%;
  height: 40px;
  animation: move-track 3s linear infinite;
}

@keyframes move-track {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}
.jump {
  animation: jumpAnim 0.4s ease-out;
  bottom: 85px;
}

@keyframes jumpAnim {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-150px); } /* much higher */
  100% { transform: translateY(0); }
}

#score {
  position: absolute;
  top: 12px;
  right: 20px;
  font-size: 20px;
  font-family: monospace;
  color: rgb(158, 158, 158);
}
#game-over-img {
  display: none;
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 999;
}
#reset {
  display: none;
  position: absolute;
  height: 40px;
  top: 75%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 999;
  cursor: pointer;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background: black;
    color: white;
    border: none;
    border-radius: 5px;
    margin-top: 20px;
}

button:hover {
    background: #444;
}

/* Class to invert the colors of images */
.inverted {
    filter: invert(1);
    transition: filter 0.3s ease;
}
/* flying motion */
@keyframes fly {
  from { right: -60px; }
  to { right: 100%; }
}

/* wing flap */
@keyframes flap {
  0%   { background-image: url("img/bird1.png"); }
  50%  { background-image: url("img/bird2.png"); }
  100% { background-image: url("img/bird1.png"); }
}

.bird1, .bird2 {
  position: absolute;
  width: 50px;
  height: 50px;
  background-size: contain;
  background-repeat: no-repeat;
  animation: fly 5s linear infinite, flap 1s steps(2) infinite;
}

/* heights */
.bird1 {
  top: 140px;   /* low bird */
  animation-delay: 0s;
}

.bird2 {
  top: 210px;   /* high bird */
  animation-delay: 2.5s; /* half cycle, so they alternate */
}