:root {
	--night-top: #070d2b;
	--night-mid: #14235a;
	--night-low: #2b3f85;
	--night-horizon: #5a6fb0;
	--red: #d3132f;
	--gold: #ffd35c;
	--glass: rgba(7, 13, 43, 0.62);
	--heading-font: "Mountains of Christmas", "Trebuchet MS", "Segoe UI", system-ui, cursive;
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	padding: 0;
	overflow-x: hidden;
	background: var(--night-top);
	color: #fff;
	font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	-webkit-text-size-adjust: 100%;
}

#sky,
#stars,
canvas#scenery-canvas,
canvas#snow-back-canvas,
canvas#snow-front-canvas {
	position: fixed;
	inset: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
}

#sky {
	z-index: 0;
	background: linear-gradient(180deg, var(--night-top) 0%, var(--night-mid) 45%, var(--night-low) 75%, var(--night-horizon) 100%);
}

#stars {
	z-index: 0;
}

.star {
	position: absolute;
	border-radius: 50%;
	background: #fff;
	opacity: 0.3;
	animation: twinkle 3s ease-in-out infinite alternate;
}

@keyframes twinkle {
	from {
		opacity: 0.15;
		transform: scale(0.8);
	}
	to {
		opacity: 1;
		transform: scale(1.2);
	}
}

canvas#scenery-canvas {
	z-index: 1;
}

canvas#snow-back-canvas {
	z-index: 2;
}

canvas#snow-front-canvas {
	z-index: 5;
}

canvas {
	opacity: 0;
	transition: opacity 0.8s ease;
}

canvas.visible {
	opacity: 1;
}

.lights {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	height: 52px;
	z-index: 6;
	display: flex;
	overflow: hidden;
	pointer-events: none;
	transition: opacity 0.4s ease;
}

.lights.off {
	opacity: 0;
}

.light-seg {
	position: relative;
	flex: 0 0 auto;
	width: 120px;
	height: 100%;
}

.light-seg::before {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	top: -22px;
	height: 44px;
	border-bottom: 2px solid #0b0b12;
	border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.bulb {
	position: absolute;
	width: 10px;
	height: 16px;
	margin-left: -5px;
	border-radius: 50% 50% 55% 55%;
	background: var(--c);
	box-shadow: 0 0 10px 2px var(--c);
	animation: bulb 1.8s ease-in-out infinite alternate;
}

@keyframes bulb {
	from {
		opacity: 0.45;
	}
	to {
		opacity: 1;
	}
}

.page {
	position: relative;
	z-index: 4;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 18px;
	min-height: 100vh;
	min-height: 100dvh;
	padding: 76px 16px calc(28px + env(safe-area-inset-bottom));
}

.hero {
	text-align: center;
}

.hero h1 {
	margin: 0;
	font-family: var(--heading-font);
	font-size: clamp(2.6rem, 10vw, 5rem);
	line-height: 1.05;
	letter-spacing: 0.01em;
	color: #fff;
	text-shadow: 0 0 22px rgba(255, 255, 255, 0.35), 0 3px 0 #8f0c20, 0 6px 18px rgba(0, 0, 0, 0.5);
}

.tagline {
	margin: 8px 0 0;
	font-size: clamp(1rem, 3.6vw, 1.25rem);
	color: var(--gold);
	text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

.card {
	width: 100%;
	max-width: 680px;
	padding: 10px;
	border-radius: 22px;
	background: repeating-linear-gradient(-45deg, var(--red) 0 14px, #fff 14px 28px);
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(255, 211, 92, 0.15);
}

.card-inner {
	overflow: hidden;
	border-radius: 14px;
	background: #fff;
}

.pill {
	margin: 0;
	padding: 8px 16px;
	border-radius: 999px;
	background: var(--glass);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	font-size: 0.85rem;
	text-align: center;
}

.pill a {
	color: var(--gold);
}

.credits {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 2px 8px;
	color: rgba(255, 255, 255, 0.85);
}

.menu {
	position: fixed;
	top: max(54px, calc(env(safe-area-inset-top) + 54px));
	right: max(12px, env(safe-area-inset-right));
	z-index: 10;
	display: flex;
	gap: 8px;
}

.menu-button {
	width: 44px;
	height: 44px;
	border: none;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.16);
	color: rgba(255, 255, 255, 0.85);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: background 0.2s ease, color 0.2s ease;
}

.menu-button:hover,
.menu-button:focus-visible {
	background: rgba(255, 255, 255, 0.3);
	color: #fff;
}

.menu-button svg {
	fill: currentColor;
}

#music-toggle .icon-off,
#music-toggle[aria-pressed="true"] .icon-on {
	display: block;
}

#music-toggle .icon-on,
#music-toggle[aria-pressed="true"] .icon-off {
	display: none;
}

.menu-panel {
	position: absolute;
	top: calc(100% + 8px);
	right: 0;
	min-width: 150px;
	padding: 10px 14px;
	border-radius: 14px;
	background: rgba(255, 255, 255, 0.85);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}

.menu-panel[hidden] {
	display: none;
}

.menu-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 6px 0;
	font-size: 14px;
	line-height: 1.2;
	color: #222;
	user-select: none;
}

.menu-row input[type="checkbox"] {
	width: 20px;
	height: 20px;
	accent-color: var(--red);
	cursor: pointer;
}

.music-hint {
	position: fixed;
	left: 50%;
	bottom: max(18px, calc(env(safe-area-inset-bottom) + 12px));
	transform: translateX(-50%);
	z-index: 10;
	max-width: calc(100% - 32px);
	padding: 12px 20px;
	border: 1px solid rgba(255, 255, 255, 0.35);
	border-radius: 999px;
	background: var(--glass);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	color: #fff;
	font: inherit;
	font-size: 0.95rem;
	cursor: pointer;
	animation: hint-pulse 2s ease-in-out infinite;
}

.music-hint[hidden] {
	display: none;
}

@keyframes hint-pulse {
	50% {
		box-shadow: 0 0 0 8px rgba(255, 211, 92, 0.18);
	}
}

@media (max-width: 480px) {
	.page {
		padding-top: 68px;
		gap: 14px;
	}

	.card {
		padding: 7px;
		border-radius: 18px;
	}

	.card-inner {
		border-radius: 12px;
	}

	.menu {
		top: max(50px, calc(env(safe-area-inset-top) + 50px));
	}
}

@media (prefers-reduced-motion: reduce) {
	.star,
	.bulb,
	.music-hint {
		animation: none;
	}

	canvas {
		transition-duration: 0.3s;
	}
}