:root {
	--bg-start: #d2dfed;
	--bg-end: #aec0ea;
	--bg-glow: rgba(255,255,255,.5);
	--text-color: #345;
	--h2-color: #4c6480;
	--links-color: #888;
	--button-bg: #fff;
	--card-bg: rgba(255,255,255,.35);
	--card-border: rgba(255,255,255,.6);
	--card-shadow: rgba(30,50,80,.15);
	--photo-ring: rgba(255,255,255,.8);
}

@media (prefers-color-scheme: dark) {
	:root:not([data-theme="light"]) {
		--bg-start: #1c2733;
		--bg-end: #12202f;
		--bg-glow: rgba(120,150,190,.12);
		--text-color: #cddcee;
		--h2-color: #b9cee8;
		--links-color: #9aa;
		--button-bg: #29384a;
		--card-bg: rgba(20,30,45,.4);
		--card-border: rgba(255,255,255,.08);
		--card-shadow: rgba(0,0,0,.5);
		--photo-ring: rgba(255,255,255,.15);
	}
}

:root[data-theme="dark"] {
	--bg-start: #1c2733;
	--bg-end: #12202f;
	--bg-glow: rgba(120,150,190,.12);
	--text-color: #cddcee;
	--h2-color: #8fa9c9;
	--links-color: #9aa;
	--button-bg: #29384a;
	--card-bg: rgba(20,30,45,.4);
	--card-border: rgba(255,255,255,.08);
	--card-shadow: rgba(0,0,0,.5);
	--photo-ring: rgba(255,255,255,.15);
}

*, *::before, *::after {
	box-sizing: border-box;
}

html, body {
	height: 100%;
}

body {
	margin: 0;
	background:
		radial-gradient(circle at 15% 10%, var(--bg-glow), transparent 45%),
		radial-gradient(circle at 85% 90%, var(--bg-glow), transparent 45%),
		linear-gradient(to bottom, var(--bg-start) 0%, var(--bg-end) 100%);
	background-attachment: fixed;
	color: var(--text-color);
	text-align: center;
	font-family: 'Montserrat', sans-serif;
	transition: background .3s ease, color .3s ease;
}

.content {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 100%;
	width: 100%;
	padding-bottom: 10em;
	padding-top: 10px;
	margin-left: auto;
	margin-right: auto;
	max-width: 1000px;
}

.middle-aligned {
	position: relative;
	width: 100%;
	max-width: 640px;
	margin: 0 auto;
	padding: 3em 3em 2.5em;
	border-radius: 28px;
	background: var(--card-bg);
	border: 1px solid var(--card-border);
	box-shadow: 0 30px 60px var(--card-shadow);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}

#theme-toggle {
	position: absolute;
	top: 16px;
	right: 16px;
	z-index: 20;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	border: 0;
	background-color: var(--button-bg);
	font-size: 18px;
	line-height: 1;
	cursor: pointer;
	box-shadow: 0 4px 14px rgba(0,0,0,.2);
	transition: transform .15s ease, box-shadow .15s ease;
}

#theme-toggle:hover {
	transform: scale(1.1);
	box-shadow: 0 6px 18px rgba(0,0,0,.25);
}

#theme-toggle:active {
	transform: scale(0.95);
}

.player {
	width: 25em;
	margin-left: auto;
	margin-right: auto;
	padding-top: 1em;
}

h1 {
	font-size: clamp(1.5rem, 7.5vw, 2.667rem);
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--text-color);
	margin: 0.4em 0 0;
	white-space: nowrap;
}

h2 {
	font-size: clamp(0.7rem, 3.2vw, 0.917rem);
	font-weight: 600;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	margin-top: 0.7em;
	color: var(--h2-color);
}

ul.links {
	color: var(--links-color);
	margin-top: 1.5em;
	margin-bottom: 1em;
	padding: 0;
	list-style-type: none;
}

ul.links li {
	display: inline-block;
	margin: 0 4px;
}

.button {
	width: 45px;
	height: 45px;
	display: inline-block;
	border-radius: 22.5px;
	background-color: #fff;
	box-shadow: 0 4px 10px rgba(0,0,0,.15);
	transition: transform .2s ease, box-shadow .2s ease;
}

a:hover .button {
	transform: translateY(-3px) scale(1.08);
	box-shadow: 0 8px 18px rgba(0,0,0,.25);
}

.profile img {
  width: 250px;
  border-radius: 50%;
  border: 4px solid var(--photo-ring);
  box-shadow: 0 20px 40px var(--card-shadow);
}

.youtube {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin-top: 2em;
  border-radius: 16px;
  box-shadow: 0 20px 40px var(--card-shadow);
}

.youtube iframe {
    border: 0;
    width: 100%;
    height: 100%;
}

@media (max-width: 600px) {
	.content {
		padding-bottom: 1.5em;
	}

	.middle-aligned {
		padding: 2em 1.5em;
		border-radius: 20px;
	}
}