:root {
	--hw-orange: #ff7a1a;
	--hw-orange-hi: #ffa040;
	--hw-amber: #ffb000;
	--hw-ink: #0d0612;
	--hw-panel: #1d0f29;
	--hw-panel-hi: #2a1038;
	--hw-line: #6b3a14;
	--hw-purple: #7a3bb8;
}

::selection {
	background: var(--hw-orange);
	color: #000;
	text-shadow: none;
}

body::before {
	content: '';
	position: fixed;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background:
		radial-gradient(ellipse at 50% 125%, rgba(255, 110, 20, 0.26), transparent 55%),
		linear-gradient(to top, rgba(120, 60, 160, 0.2), transparent 32%),
		radial-gradient(ellipse at center, transparent 42%, rgba(20, 0, 30, 0.6) 100%);
}

body::after {
	content: '';
	position: fixed;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	image-rendering: pixelated;
	background-image:
		url(halloween/web-tl.svg), url(halloween/web-tr.svg), url(halloween/moon.svg),
		url(halloween/stars.svg);
	background-repeat: no-repeat, no-repeat, no-repeat, repeat;
	background-position:
		left top,
		right top,
		right 8vw top 14vh,
		0 0;
	background-size:
		84px 84px,
		84px 84px,
		128px 128px,
		256px 256px;
	-webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent 92%);
	mask-image: linear-gradient(to bottom, #000 60%, transparent 92%);
}

html::before,
html::after {
	content: '';
	position: fixed;
	top: 0;
	left: 0;
	z-index: 250;
	pointer-events: none;
	image-rendering: pixelated;
	background-image: url(halloween/bat.svg);
	background-repeat: no-repeat;
	background-position: 0 0;
}

html::before {
	width: 32px;
	height: 14px;
	background-size: 64px 14px;
	animation:
		hw-flap-2x 0.35s steps(2) infinite,
		hw-fly-a 38s infinite;
}

html::after {
	width: 48px;
	height: 21px;
	background-size: 96px 21px;
	animation:
		hw-flap-3x 0.45s steps(2) infinite,
		hw-fly-b 52s -20s infinite;
}

@keyframes hw-flap-2x {
	to {
		background-position: -64px 0;
	}
}

@keyframes hw-flap-3x {
	to {
		background-position: -96px 0;
	}
}

@keyframes hw-fly-a {
	0% {
		transform: translate(-80px, 22vh);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	12% {
		transform: translate(18vw, 14vh);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	24% {
		transform: translate(38vw, 26vh);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	36% {
		transform: translate(60vw, 12vh);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	48% {
		transform: translate(82vw, 24vh);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	58%,
	100% {
		transform: translate(calc(100vw + 80px), 16vh);
	}
}

@keyframes hw-fly-b {
	0% {
		transform: translate(calc(100vw + 80px), 34vh) scaleX(-1);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	15% {
		transform: translate(78vw, 40vh) scaleX(-1);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	30% {
		transform: translate(52vw, 30vh) scaleX(-1);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	45% {
		transform: translate(26vw, 42vh) scaleX(-1);
		animation-timing-function: cubic-bezier(0.45, 0.05, 0.55, 0.95);
	}
	60%,
	100% {
		transform: translate(-120px, 28vh) scaleX(-1);
	}
}

#bottom::before {
	content: '';
	position: absolute;
	right: 140px;
	bottom: 100%;
	width: 88px;
	height: 42px;
	pointer-events: none;
	image-rendering: pixelated;
	background-image: url(halloween/pumpkin.svg), url(halloween/pumpkin.svg);
	background-repeat: no-repeat;
	background-position:
		0 100%,
		52px 100%;
	background-size:
		48px 42px,
		32px 28px;
	filter: drop-shadow(0 0 6px rgba(255, 140, 20, 0.65));
	animation: hw-flicker 3.2s steps(1) infinite;
}

@keyframes hw-flicker {
	0% {
		filter: drop-shadow(0 0 6px rgba(255, 140, 20, 0.65)) brightness(1);
	}
	20% {
		filter: drop-shadow(0 0 4px rgba(255, 140, 20, 0.45)) brightness(0.84);
	}
	24% {
		filter: drop-shadow(0 0 8px rgba(255, 150, 30, 0.8)) brightness(1.06);
	}
	55% {
		filter: drop-shadow(0 0 5px rgba(255, 140, 20, 0.55)) brightness(0.9);
	}
	60% {
		filter: drop-shadow(0 0 6px rgba(255, 140, 20, 0.65)) brightness(1);
	}
	80% {
		filter: drop-shadow(0 0 4px rgba(255, 140, 20, 0.4)) brightness(0.8);
	}
	84% {
		filter: drop-shadow(0 0 6px rgba(255, 140, 20, 0.65)) brightness(1);
	}
}

#names .name.owner:before,
.cursor.owner .name:after {
	content: url(halloween/hat.svg);
}

#crown {
	background-image: url(halloween/hat.svg);
}

#piano canvas {
	filter: drop-shadow(0 -2px 14px rgba(255, 110, 10, 0.28));
}

a,
.spoiler:hover a {
	color: var(--hw-orange);
}

a:hover,
.spoiler:hover a:hover {
	color: var(--hw-orange-hi);
}

.link {
	color: var(--hw-amber);
}

#status .number {
	text-shadow:
		#444 1px 1px,
		0 0 8px rgba(255, 130, 20, 0.7);
}

code {
	background: var(--hw-panel);
	color: #ffd9a0;
}

.ugly-button,
.top-button,
.client-settings-button {
	background: #14081c;
	border-color: #5a3416;
	transition:
		background 0.2s,
		box-shadow 0.2s;
}

.ugly-button:hover,
.top-button:hover,
.client-settings-button:hover {
	background: #2a1038;
	box-shadow: 0 0 6px rgba(255, 122, 26, 0.45);
}

.ugly-button.stuck,
.top-button.stuck,
.client-settings-button.stuck {
	background: rgba(255, 122, 26, 0.35);
}

.client-settings-tablink.active {
	background-color: #5a2d0f;
}

#room {
	background: var(--hw-panel);
	border-color: var(--hw-line);
}

#room .expand {
	background-color: var(--hw-line);
}

#room .more {
	background: var(--hw-panel);
	border-color: var(--hw-line);
	scrollbar-color: var(--hw-orange) var(--hw-panel);
}

#room .more .info:hover {
	background: #3a1a4a;
}

#room .more .new {
	background: var(--hw-ink);
}

#room .more .new:hover {
	background: var(--hw-panel-hi);
}

#room .info.lobby {
	color: #ffe9a8;
}

#modal .bg {
	background: #3a0f5c;
}

.dialog {
	background: var(--hw-panel);
	border-color: var(--hw-line);
	box-shadow:
		0 0 8px #000,
		0 0 26px rgba(255, 100, 0, 0.25);
}

.dialog .submit {
	background: var(--hw-orange);
}

.dialog .submit:hover {
	background: var(--hw-orange-hi);
}

.notification-body,
.notification.classic .notification-body {
	background: var(--hw-panel);
	border-color: var(--hw-line);
}

.title {
	border-bottom-color: var(--hw-orange);
}

.participant-menu {
	background: var(--hw-ink);
	box-shadow: 0 0 10px rgba(255, 100, 0, 0.2);
}

.participant-menu .menu-item {
	border-top-color: rgba(255, 160, 64, 0.3);
}

.participant-menu .menu-item:hover {
	background: rgba(255, 122, 26, 0.4);
}

.participant-menu .menu-item.clicked {
	background: rgba(255, 122, 26, 0.55);
}

#chat.chatting {
	background: rgba(30, 12, 42, 0.82);
	box-shadow: 1px 1px 6px rgba(255, 122, 26, 0.5);
}

#chat.chatting ul {
	scrollbar-width: thin;
	scrollbar-color: var(--hw-orange) transparent;
}

#chat input:focus {
	border-color: var(--hw-orange-hi);
}

#chat li .quote {
	color: #8fbf2a;
}

#chat li .reply {
	background-color: #14081c;
	border-color: #5a3416;
}

#quota {
	background: #7a2fb0;
}

#quota .value {
	background: #ff9a1f;
}

input[type='range'] {
	background-image: linear-gradient(
		to right,
		hsla(280, 100%, 28%, 0.85) 0%,
		hsla(280, 100%, 14%, 0.85) 8%,
		hsl(270, 60%, 3%) 50%,
		hsl(20, 90%, 18%) 92%,
		hsl(28, 100%, 50%) 100%
	);
}

input[type='range']:hover {
	background-image: linear-gradient(
		to right,
		hsla(300, 100%, 30%, 0.85) 0%,
		hsla(300, 100%, 15%, 0.85) 8%,
		hsl(270, 60%, 3%) 50%,
		hsl(20, 90%, 18%) 92%,
		hsl(28, 100%, 50%) 100%
	);
}

input[type='range']::-webkit-slider-thumb {
	background-image: linear-gradient(
		to right,
		hsl(25, 20%, 15%) 0%,
		hsl(25, 20%, 22%) 16%,
		hsl(28, 60%, 38%) 18%,
		hsl(25, 20%, 26%) 20%,
		hsl(25, 20%, 26%) 80%,
		hsl(28, 60%, 38%) 82%,
		hsl(25, 20%, 22%) 84%,
		hsl(25, 20%, 15%) 100%
	);
	-webkit-box-shadow:
		inset hsla(30, 100%, 80%, 0.18) 0 1px 0px,
		hsl(270, 20%, 17%) 0 2px 0px,
		hsl(270, 20%, 15%) 0 4px 0px,
		hsl(270, 20%, 13%) 0 6px 0px,
		rgba(0, 0, 0, 0.5) 0 8px 5px;
}

@media (prefers-reduced-motion: reduce) {
	html::before,
	html::after {
		display: none;
	}

	#bottom::before {
		animation: none;
	}
}