* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Ubuntu', sans-serif;
    background-color: #282c34;
    color: white;
    overflow: hidden;
}
.authForm {
    display: none;
    margin: 100px auto;
    padding: 20px;
    border: 2px solid #333;
    width: 300px;
    background-color: #20232a;
    text-align: center;
    border-radius: 10px;
}
.authForm input {
    margin: 10px 0;
    padding: 10px;
    width: 100%;
    border-radius: 5px;
    border: 1px solid #ccc;
    color: #282c34;
}
.authForm button {
    padding: 10px;
    width: 100%;
    border-radius: 5px;
    background-color: #61dafb;
    color: white;
    border: none;
    cursor: pointer;
}
.authForm p {
    margin-top: 15px;
    font-size: 14px;
}
.authForm span {
    color: #61dafb;
    cursor: pointer;
}

#authContainer {
    text-align: center;
    display: none;
}

.gameContainer {
    background-image: url(bg.png);
    background-repeat: no-repeat;
    background-size: 100vw 100vh;
    width: 100%;
    height: 100vh;
    display: none;
}

.dino {
    background-image: url(dino.png);
    background-repeat: no-repeat;
    background-size: cover;
    width: 233px;
    height: 114px;
    position: absolute;
    bottom: 0;
    left: 52px;
}

.obstacle {
    width: 166px;
    height: 113px;
    background-image: url(dragon.png);
    background-size: cover;
    position: absolute;
    bottom: 0;
    left: 44vw;
}

.animateDino {
    animation: dino 0.6s linear;
}

.obstacleAni {
    animation: obstacleAni 5s linear infinite;
}

.gameOver {
    width: 60%;
    max-width: 800px;
    background-color: rgba(0, 0, 0, 0.85);
    color: #ff6b6b;
    border: 3px solid #ff4757;
    border-radius: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9); /* Start smaller for a smoother transition */
    font-size: 3rem;
    text-align: center; 
    font-family: 'Ubuntu', sans-serif;
    padding: 20px 40px;
    visibility: hidden;
    opacity: 0; /* Hidden and transparent initially */
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transition: all 0.6s cubic-bezier(0.25, 0.8, 0.25, 1); /* Smooth transition with easing */
}

.gameOver.show {
    visibility: visible;
    opacity: 1; /* Fade in */
    transform: translate(-50%, -50%) scale(1); /* Smoothly scale to full size */
}



#scoreCont {
    background-color: darkblue;
    width: 120px;
    color: white;
    font-size: 18px;
    font-weight: bold;
    position: absolute;
    right: 23px;
    top: 23px;
    border: 3px solid #0deb2c;
    padding: 10px;
    font-family: 'Ubuntu', sans-serif;
    border-radius: 10px;
}

#logoutBtn {
    position: absolute;
    top: 100px;
    right: 20px;
    display: none;
    padding: 10px;
    border-radius: 10px;
    background-color: #e72727;
    color: white;
    font-weight: bold;
    border: 2px solid black;
    cursor: pointer;
}

@keyframes dino {
    0% {
        bottom: 0;
    }
    50% {
        bottom: 422px;
    }
    100% {
        bottom: 0;
    }
}

@keyframes obstacleAni {
    0% {
        left: 100vw;
    }
    100% {
        left: -10vw;
    }
}