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

html,
body {
	height: 100%;
}

/* Ensure HTML `hidden` always wins over component display rules. */
[hidden] {
	display: none !important;
}

body.scanlinesExp {
	overflow: hidden;
	background: #000;
	color: rgba(255, 255, 255, 0.92);
	font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

/* CRT-style background (static scanlines + vignette — no animations) */
body.scanlinesExp::before {
	content: "";
	position: fixed;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	mask-image: radial-gradient(
		ellipse 115% 105% at 50% 44%,
		#fff 0%,
		#fff 22%,
		rgba(255, 255, 255, 0.72) 48%,
		rgba(255, 255, 255, 0.22) 76%,
		rgba(255, 255, 255, 0.05) 100%
	);
	-webkit-mask-image: radial-gradient(
		ellipse 115% 105% at 50% 44%,
		#fff 0%,
		#fff 22%,
		rgba(255, 255, 255, 0.72) 48%,
		rgba(255, 255, 255, 0.22) 76%,
		rgba(255, 255, 255, 0.05) 100%
	);
	mask-size: 100% 100%;
	-webkit-mask-size: 100% 100%;
	mask-repeat: no-repeat;
	-webkit-mask-repeat: no-repeat;
	background:
		radial-gradient(
			ellipse 125% 120% at 50% 42%,
			rgba(22, 14, 38, 0.06) 0%,
			rgba(18, 10, 32, 0.42) 38%,
			rgba(6, 2, 14, 0.82) 72%,
			rgba(2, 0, 6, 0.94) 100%
		),
		repeating-linear-gradient(
			180deg,
			rgba(120, 95, 175, 0.075) 0,
			rgba(120, 95, 175, 0.075) 2px,
			rgba(14, 6, 34, 0.28) 2px,
			rgba(14, 6, 34, 0.28) 5px
		),
		linear-gradient(180deg, rgba(35, 18, 58, 0.1), rgba(12, 6, 28, 0.16));
}

body.scanlinesExp.scanlinesExp--noBg::before {
	display: none;
}

/*
 * CRT scanline photon — adapted from site implementation.
 * GRID_PX must match the body::before repeating-linear-gradient period (5px).
 */
#crt-scanline-photons {
	position: fixed;
	inset: 0;
	z-index: 0;
	overflow: hidden;
	pointer-events: none;
	mask-image: radial-gradient(
		ellipse 115% 105% at 50% 44%,
		#fff 0%,
		#fff 22%,
		rgba(255, 255, 255, 0.72) 48%,
		rgba(255, 255, 255, 0.22) 76%,
		rgba(255, 255, 255, 0.05) 100%
	);
	-webkit-mask-image: radial-gradient(
		ellipse 115% 105% at 50% 44%,
		#fff 0%,
		#fff 22%,
		rgba(255, 255, 255, 0.72) 48%,
		rgba(255, 255, 255, 0.22) 76%,
		rgba(255, 255, 255, 0.05) 100%
	);
	mask-size: 100% 100%;
	-webkit-mask-size: 100% 100%;
	mask-repeat: no-repeat;
	-webkit-mask-repeat: no-repeat;
}

#crt-scanline-photons .crt-photon {
	--crt-photon-duration: 0.958s;
	position: absolute;
	left: 0;
	width: 5px;
	height: 3px;
	margin: 0;
	padding: 0;
	border: none;
	border-radius: 0;
	background: rgba(200, 182, 248, 0.78);
	box-shadow:
		0 0 4px 1px rgba(190, 165, 255, 0.65),
		0 0 12px 3px rgba(195, 120, 235, 0.38),
		0 0 20px 5px rgba(255, 95, 175, 0.2);
	animation-duration: var(--crt-photon-duration);
	animation-timing-function: linear;
	animation-fill-mode: forwards;
	will-change: transform, opacity;
}

#crt-scanline-photons .crt-photon--ltr {
	animation-name: crt-photon-ltr;
}

#crt-scanline-photons .crt-photon--rtl {
	animation-name: crt-photon-rtl;
}

@keyframes crt-photon-ltr {
	0% {
		transform: translateX(-12px);
		opacity: 0;
	}
	9% {
		opacity: 0.88;
	}
	91% {
		opacity: 0.88;
	}
	100% {
		transform: translateX(calc(100vw + 12px));
		opacity: 0;
	}
}

@keyframes crt-photon-rtl {
	0% {
		transform: translateX(calc(100vw + 12px));
		opacity: 0;
	}
	9% {
		opacity: 0.88;
	}
	91% {
		opacity: 0.88;
	}
	100% {
		transform: translateX(-12px);
		opacity: 0;
	}
}

.hud,
.controls,
.fallback {
	position: fixed;
	z-index: 2;
}

.hud {
	top: 16px;
	left: 16px;
	right: 16px;
	pointer-events: none;
	opacity: 0.72;
	mix-blend-mode: screen;
}

.hud__titleRow {
	display: inline-flex;
	align-items: baseline;
	gap: 12px;
	pointer-events: auto;
}

.hud__title {
	font-size: 12px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: rgba(255, 255, 255, 0.88);
	text-shadow:
		0 0 10px rgba(255, 120, 220, 0.18),
		0 0 24px rgba(140, 120, 255, 0.12);
}

.hud__more {
	font-size: 12px;
	letter-spacing: 0.02em;
	color: rgba(122, 44, 255, 0.6);
	text-decoration: none;
	opacity: 0.9;
	pointer-events: auto;
}

.hud__more:focus-visible {
	outline: 2px solid rgba(122, 44, 255, 0.65);
	outline-offset: 3px;
	border-radius: 6px;
}

.hud__desc {
	margin-top: 8px;
	max-width: 72ch;
	line-height: 1.45;
	font-size: 13px;
	opacity: 0.72;
	text-shadow:
		0 0 1px rgba(0, 0, 0, 0.9),
		0.05em 0.08em 0.18em rgba(0, 0, 0, 0.55);
}

.controls {
	right: 16px;
	top: 16px;
	width: min(360px, calc(100vw - 32px));
	padding: 12px 12px 10px;
	border: 1px solid rgba(255, 255, 255, 0.14);
	border-radius: 10px;
	background: rgba(0, 0, 0, 0.72);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	color: rgba(255, 255, 255, 0.9);
	box-shadow:
		0 0 22px rgba(255, 90, 230, 0.08),
		0 0 46px rgba(90, 170, 255, 0.08);
}

.controls__row {
	display: block;
	padding: 8px 0;
}

.controls__row--stack {
	display: grid;
	gap: 8px;
}

.controls__label {
	font-size: 12px;
	opacity: 0.82;
}

.controls__select {
	width: 100%;
	height: 32px;
	border-radius: 8px;
	border: 1px solid rgba(255, 255, 255, 0.16);
	background: linear-gradient(90deg, rgba(0, 194, 255, 0.14), rgba(122, 44, 255, 0.14), rgba(255, 79, 216, 0.14));
	color: rgba(255, 255, 255, 0.9);
	padding: 0 10px;
	font-size: 12px;
	letter-spacing: 0.02em;
	appearance: none;
	-webkit-appearance: none;
}

.controls__select:focus-visible {
	outline: 2px solid rgba(0, 194, 255, 0.55);
	outline-offset: 3px;
}

.controls__toggle {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	height: 32px;
	padding: 0 10px;
	border-radius: 8px;
	border: 1px solid rgba(255, 255, 255, 0.16);
	background: rgba(255, 255, 255, 0.06);
	cursor: pointer;
	user-select: none;
}

.controls__toggle input {
	position: absolute;
	opacity: 0;
	width: 1px;
	height: 1px;
}

.controls__toggleUi {
	position: relative;
	width: 34px;
	height: 18px;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.14);
	box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
	flex: none;
}

.controls__toggleUi::after {
	content: "";
	position: absolute;
	top: 2px;
	left: 2px;
	width: 14px;
	height: 14px;
	border-radius: 999px;
	background: radial-gradient(circle at 30% 30%, #ffffff, #ffd1f3 45%, #ff4fd8 70%, #7a2cff);
	box-shadow: 0 0 14px rgba(255, 80, 220, 0.18), 0 0 14px rgba(60, 140, 255, 0.12);
	transition: transform 120ms ease;
}

.controls__toggle input:checked + .controls__toggleUi::after {
	transform: translateX(16px);
}

.controls__toggleText {
	font-size: 12px;
	letter-spacing: 0.02em;
	color: rgba(255, 255, 255, 0.9);
}

.controls__toggle:has(input:focus-visible) {
	outline: 2px solid rgba(0, 194, 255, 0.55);
	outline-offset: 3px;
}

.fallback {
	inset: 0;
	display: grid;
	place-content: center;
	padding: 24px;
	background: radial-gradient(circle at 30% 20%, rgba(122, 44, 255, 0.16), rgba(0, 0, 0, 0.92) 55%, rgba(0, 0, 0, 0.98));
	color: rgba(255, 255, 255, 0.9);
	text-align: left;
}

.fallback__title {
	font-size: 14px;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	opacity: 0.92;
	margin-bottom: 10px;
}

.fallback__body {
	max-width: 56ch;
	line-height: 1.45;
	font-size: 14px;
	opacity: 0.78;
}

@media (prefers-reduced-motion: reduce) {
	#crt-scanline-photons {
		display: none;
	}
}