@charset "utf-8";

/*
   New Perspectives on HTML and CSS, 8th Edition
   Tutorial 8
   Case Problem 2

   Pixal Arts and Entertainment Animation Styles
   Author: Kevin Viren
   Date:   11/26/2023

   Filename: 
   
   Sprite animation is created using the paa_bat.png, 
   paa_bfly.png, and paa_fox.png image files.
   
   paa_bat.png has 40 frames
   paa_bfly.png has 34 frames
   paa_fox.png has 28 frames

*/


/* Transition Effects */

nav#gameLinks a {
	position: relative;
	color: white;
	transition: color 0.5s;
}

nav#gameLinks a:hover {
	color: rgb(255, 194, 99);
}

nav#gameLinks a::after {
	content: "";
	position: absolute;
	top: 100%;
	left: 0px;
	width: 0%;
	height: 8px;
	background: linear-gradient(to right, rgb(237, 243, 71), rgb(188, 74, 0));
	border-radius: 4px;
	opacity: 0;
	transition: opacity 0.5s, width 0.5s;
}

nav#gameLinks a:hover::after {
	opacity: 1;
	width: 100%;
}


/* Sprite Styles */

div.sprite {
	position: absolute;
}

div#bat {
	width: 40px;
	height: 50px;
	top: 100px;
	left: -50px;
	background: url(paa_bat.png) center left no-repeat;
	background-size: cover;
	animation: playSprite 2s steps(39) infinite;
	animation: flyRight 8s linear infinite;
}

div#butterfly {
	width: 35px;
	height: 35px;
	top: 60px;
	left: -50px;
	background: url(paa_bfly.png) center left no-repeat;
	background-size: cover;
	animation: playSprite 1s 3s steps(33) infinite;
	animation: flyRight 6s cubic-bezier(0,1,0.73,0) infinite;
}

div#fox {
	width: 280px;
	height: 260px;
	bottom: 10px;
	right: 10px;
	background: url(paa_fox.png) center left no-repeat;
	background-size: cover;
	animation: playSprite 3.5s 4s steps(27) infinite;
}


/* Animation Styles */

@keyframes playSprite {
	100% {background-position: right center;}
}

@keyframes flyRight {
	25% {top: 150px;}
	50% {top: 55px;}
	65% {top: 120px;}
	90% {top: 50px;}
	100% {top: 80px; left: 100%;}
}