/* translate(-50%,-50%) perspective(1000px) rotate3d(1, 1, 1, 360deg) */
:root {
	--transition-time: 1s;
	--custom-ease: cubic-bezier(0.35, 0, 0.12, 1);
	--button-transition-time: 1s;
}

html, body {
	overflow: hidden;
}

#background-image {
	width: 100%;
	height: 100%;
	background-color: #49768f;
	background-image: url('../../assets/sunset.jpg');
	background-position: center;
	background-repeat: repeat;
	background-size: cover;

	transition:
		var(--transition-time) filter var(--custom-ease),
		var(--transition-time) transform var(--custom-ease),
		var(--transition-time) -webkit-filter var(--custom-ease);

	/* Animated properties */
	transform: scale(1.2);
	filter: blur(4px) saturate(0.5);
	-webkit-filter: blur(4px) saturate(0.4);
}
#background-image.started {
	transform: scale(1.3);
	filter: blur(10px) saturate(0.9);
	-webkit-filter: blur(10px) saturate(0.9);
}

#registration-box {
	display: grid;
	row-gap: 4px;
	width: min(350px, calc(100vw - 40px));
	border-radius: 8px;
	padding: 20px 8px 20px 8px;
	
	background-color: #4449;
	color: white;
	border: 2px solid #fff2;
	backdrop-filter: blur(10px) saturate(1.8);
	-webkit-backdrop-filter: blur(10px) saturate(1.8);

	text-align: center;
	position: absolute;
	top: 53%;
	left: 50%;
	will-change: transform, height;
	transform: translate(-50%,-50%);	
}

#registration-box > img {
	width: 100%;
	filter: drop-shadow(0px 4px 6px #0005);
	display:block;
  margin-left:auto;
  margin-right:auto;
}

@media only screen and (max-width: 600px) {
	#registration-box {
		font-size: 0.9em;
		top: 50%;
	}
	#registration-box > img {
		width: 50vw;
	}
}

#registration-box > p {
	font-weight: bold;
	font-size: 2em;
	margin: 5px;
	padding: 0;
}

/* FORM */

form {
	transition:
		var(--transition-time) height var(--custom-ease),
		var(--transition-time) margin-bottom var(--custom-ease);
	margin-bottom: 0px;
	height: 0px;
	font-size: 1.2em;
	will-change: transform, height, margin-bottom;
	display: hidden;
}

form > div {
	text-align: left;
	opacity: 0;
	margin-top: 8px;
	transition:  var(--transition-time) opacity var(--custom-ease);
}
form > div.shown {
	opacity: 1;
}

form > div > input {
	margin-top: 2px;
	border-radius: 5px;
	box-sizing: border-box;
	border: 2px solid #fff2;
	outline: 2px solid var(--highlight-color);
	width: 100%;
	padding: 4px;
	font-size: 1.1em;
}

/* EXIT DIALOGUE */

#exit-dialogue {
	font-size: 1.1em;
	opacity: 0;
	height: 0;
	transition:
		var(--transition-time) margin-bottom var(--custom-ease),
		var(--transition-time) opacity var(--custom-ease),
		var(--transition-time) height var(--custom-ease);
	margin-bottom: 0;
}
#exit-dialogue > p {
	margin: 0.5em;
}

/* ALERTS */

#alert-box {
	user-select: none;
	-webkit-user-select: none;
	font-size: 1.3em;
	background-color: #fddc;
	backdrop-filter: blur(10px) saturate(1.8);
	-webkit-backdrop-filter: blur(10px) saturate(1.8);
	color: #330000;
	border-radius: 8px;
	padding: 10px;
	box-sizing: border-box;
	position: absolute;
	top: 10px;
	left: 50%;
	width: calc(100vw - 20px);
	max-width: 800px;
	transform: translate(-50%,-120%);
	border: 2px solid #fff2;
	transition: .3s transform var(--custom-ease);
	z-index: 999;
}