/*
 * myTunes presentation layer.
 *
 * This file styles elements that Java creates at runtime; it contains no application behaviour.
 * The aesthetic follows DevTunes FM: a full-bleed background with translucent controls floating
 * directly over it, rather than panels or cards.
 */

:root {
	/* Also reaches the PiP document, which links this sheet but has no meta tag. */
	color-scheme: dark;
	--ink: #ffffff;
	--ink-dim: rgba(255, 255, 255, 0.66);
	--surface: rgba(12, 14, 20, 0.44);
	--surface-strong: rgba(12, 14, 20, 0.82);
	--hairline: rgba(255, 255, 255, 0.14);
	--bar-height: 4.5rem;
	--radius: 0.875rem;
	--shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.42);
	--ease: cubic-bezier(0.22, 0.61, 0.36, 1);
	font-family: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	height: 100%;
	background: #05070c;
	color: var(--ink);
	-webkit-font-smoothing: antialiased;
	overscroll-behavior: none;
}

.app {
	position: fixed;
	inset: 0;
	display: grid;
	grid-template-rows: auto 1fr auto;
	overflow: hidden;
}

/* The app fades in only once Java reports the interface is built, so no unstyled flash. */
.app[data-ready="false"] > .bar,
.app[data-ready="false"] > .station-menu,
.app[data-ready="false"] > .info-panel {
	opacity: 0;
}

.backdrop {
	position: absolute;
	inset: 0;
	background-position: center;
	background-size: cover;
	background-repeat: no-repeat;
	transition: opacity 900ms var(--ease);
	z-index: 0;
}

.backdrop--next {
	opacity: 0;
}

.backdrop--visible {
	opacity: 1;
}

/* Keeps the controls legible over bright artwork without dimming the whole image. */
.scrim {
	position: absolute;
	inset: 0;
	z-index: 1;
	pointer-events: none;
	background:
		linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 22%),
		linear-gradient(to top, rgba(0, 0, 0, 0.62) 0%, rgba(0, 0, 0, 0) 28%);
}

.bar {
	position: relative;
	z-index: 3;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	min-height: var(--bar-height);
	padding: 0.75rem clamp(0.875rem, 2.5vw, 2rem);
	transition: opacity 400ms var(--ease);
}

.bar--top {
	grid-row: 1;
}

.bar--bottom {
	grid-row: 3;
	padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
}

.bar__actions {
	display: flex;
	align-items: center;
	gap: 0.375rem;
}

button {
	font: inherit;
	color: inherit;
	background: none;
	border: 0;
	cursor: pointer;
}

.icon-button {
	display: grid;
	place-items: center;
	width: 2.75rem;
	height: 2.75rem;
	border-radius: 50%;
	background: var(--surface);
	border: 1px solid var(--hairline);
	backdrop-filter: blur(0.75rem);
	transition: background-color 160ms var(--ease), transform 160ms var(--ease);
}

.icon-button:hover,
.icon-button:focus-visible {
	background: rgba(255, 255, 255, 0.22);
}

.icon-button:active {
	transform: scale(0.94);
}

/* The primary control: larger and filled, so it reads first at every size. */
#play-toggle {
	width: 3.5rem;
	height: 3.5rem;
	background: rgba(255, 255, 255, 0.92);
	color: #10141d;
	border: 0;
}

#play-toggle:hover,
#play-toggle:focus-visible {
	background: #ffffff;
}

#play-toggle .icon {
	width: 1.625rem;
	height: 1.625rem;
	/* The triangle reads centred only when nudged towards its visual weight. */
	translate: 0.0625rem 0;
}

#play-toggle.is-playing .icon {
	translate: 0 0;
}

:focus-visible {
	outline: 2px solid var(--ink);
	outline-offset: 2px;
}

.station-select {
	display: flex;
	align-items: center;
	gap: 0.625rem;
	padding: 0.5rem 0.875rem 0.5rem 0.625rem;
	border-radius: 999px;
	background: var(--surface);
	border: 1px solid var(--hairline);
	backdrop-filter: blur(0.75rem);
	max-width: min(72vw, 26rem);
	transition: background-color 160ms var(--ease);
}

.station-select:hover,
.station-select:focus-visible {
	background: rgba(255, 255, 255, 0.18);
}

.station-select__label {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	min-width: 0;
}

.station-select__name {
	font-size: 0.9375rem;
	font-weight: 600;
	letter-spacing: 0.01em;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	max-width: 100%;
}

.station-select__genre {
	font-size: 0.75rem;
	color: var(--ink-dim);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	max-width: 100%;
}

.station-menu {
	position: absolute;
	z-index: 4;
	top: calc(var(--bar-height) + 0.25rem);
	left: clamp(0.875rem, 2.5vw, 2rem);
	width: min(22rem, calc(100vw - 1.75rem));
	max-height: min(26rem, 60vh);
	overflow-y: auto;
	margin: 0;
	padding: 0.375rem;
	list-style: none;
	border-radius: var(--radius);
	border: 1px solid var(--hairline);
	background: var(--surface-strong);
	backdrop-filter: blur(1.25rem);
	box-shadow: var(--shadow);
}

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

.station-menu__category {
	padding: 0.75rem 0.75rem 0.25rem;
	font-size: 0.6875rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--ink-dim);
}

.station-menu__category:first-child {
	padding-top: 0.375rem;
}

.station-menu__item {
	display: flex;
	flex-direction: column;
	gap: 0.125rem;
	padding: 0.625rem 0.75rem;
	border-radius: 0.625rem;
	cursor: pointer;
}

.station-menu__item:hover,
.station-menu__item[aria-selected="true"] {
	background: rgba(255, 255, 255, 0.12);
}

.station-menu__name {
	font-size: 0.875rem;
	font-weight: 600;
}

.station-menu__genre {
	font-size: 0.75rem;
	color: var(--ink-dim);
}

.info-panel {
	position: absolute;
	z-index: 4;
	top: calc(var(--bar-height) + 0.25rem);
	right: clamp(0.875rem, 2.5vw, 2rem);
	width: min(24rem, calc(100vw - 1.75rem));
	padding: 1rem 1.125rem;
	border-radius: var(--radius);
	border: 1px solid var(--hairline);
	background: var(--surface-strong);
	backdrop-filter: blur(1.25rem);
	box-shadow: var(--shadow);
}

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

.info-panel h2 {
	margin: 0 0 0.5rem;
	font-size: 1rem;
}

.info-panel p {
	margin: 0 0 0.625rem;
	font-size: 0.8125rem;
	line-height: 1.5;
	color: var(--ink-dim);
}

.transport {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	min-width: 0;
}

.transport__titles {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.transport__track {
	font-size: 0.9375rem;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.transport__status {
	font-size: 0.75rem;
	color: var(--ink-dim);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.volume {
	display: flex;
	align-items: center;
	gap: 0.625rem;
	padding: 0.375rem 0.875rem 0.375rem 0.375rem;
	border-radius: 999px;
	background: var(--surface);
	border: 1px solid var(--hairline);
	backdrop-filter: blur(0.75rem);
}

/* The chip provides the surface, so the buttons inside stay flat. */
.volume .icon-button {
	background: none;
	border: 0;
}

.volume .icon-button:hover,
.volume .icon-button:focus-visible {
	background: rgba(255, 255, 255, 0.18);
}

.volume__slider {
	width: clamp(6rem, 14vw, 11rem);
	height: 1.25rem;
	accent-color: currentColor;
	cursor: pointer;
}

.icon {
	display: block;
	width: 1.375rem;
	height: 1.375rem;
	background: currentColor;
	-webkit-mask-repeat: no-repeat;
	mask-repeat: no-repeat;
	-webkit-mask-position: center;
	mask-position: center;
	-webkit-mask-size: contain;
	mask-size: contain;
}

.icon--headphones {
	-webkit-mask-image: url("icons/headphones.svg");
	mask-image: url("icons/headphones.svg");
}

.icon--chevron {
	width: 1rem;
	height: 1rem;
	-webkit-mask-image: url("icons/chevron.svg");
	mask-image: url("icons/chevron.svg");
}

.icon--play {
	-webkit-mask-image: url("icons/play.svg");
	mask-image: url("icons/play.svg");
}

.icon--volume {
	-webkit-mask-image: url("icons/volume.svg");
	mask-image: url("icons/volume.svg");
}

.icon--image {
	-webkit-mask-image: url("icons/image.svg");
	mask-image: url("icons/image.svg");
}

.icon--pip {
	-webkit-mask-image: url("icons/pip.svg");
	mask-image: url("icons/pip.svg");
}

.icon--info {
	-webkit-mask-image: url("icons/info.svg");
	mask-image: url("icons/info.svg");
}

.is-playing .icon--play {
	-webkit-mask-image: url("icons/pause.svg");
	mask-image: url("icons/pause.svg");
}

.is-muted .icon--volume {
	-webkit-mask-image: url("icons/volume-off.svg");
	mask-image: url("icons/volume-off.svg");
	opacity: 0.6;
}

@media (max-width: 40rem) {
	:root {
		--bar-height: 4rem;
	}

	.bar--bottom {
		flex-wrap: wrap;
		gap: 0.5rem;
	}

	.transport {
		flex: 1 1 100%;
		order: 1;
	}

	.volume {
		flex: 1 1 100%;
		order: 2;
		justify-content: space-between;
	}

	.volume__slider {
		flex: 1;
		width: auto;
	}

	/* Touch targets stay at the 44px minimum even though the bar is shorter. */
	.icon-button {
		width: 2.75rem;
		height: 2.75rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.backdrop,
	.bar,
	.icon-button {
		transition: none;
	}
}

/* The Document Picture-in-Picture window is a separate document that links this same stylesheet. */
.mini {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 0.625rem;
	height: 100%;
	padding: 0.75rem 1rem;
	background: #0b1020;
	color: var(--ink);
}

.mini__titles {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.mini__title {
	font-size: 0.9375rem;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.mini__genre {
	font-size: 0.75rem;
	color: var(--ink-dim);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.mini__controls {
	display: flex;
	align-items: center;
	gap: 0.375rem;
}

/* The window is opaque, so the buttons need no blurred chip behind them. */
.mini__controls .icon-button {
	width: 2.5rem;
	height: 2.5rem;
	background: rgba(255, 255, 255, 0.12);
	border: 0;
	backdrop-filter: none;
	flex: none;
}

.mini__controls .icon-button:hover,
.mini__controls .icon-button:focus-visible {
	background: rgba(255, 255, 255, 0.24);
}

/* Specificity must beat .mini__controls .icon-button, or the chip background wins. */
.mini__controls .mini__play {
	background: rgba(255, 255, 255, 0.92);
	color: #10141d;
}

.mini__controls .mini__play:hover,
.mini__controls .mini__play:focus-visible {
	background: #ffffff;
}

.mini__prev .icon {
	transform: rotate(90deg);
}

.mini__next .icon {
	transform: rotate(-90deg);
}

.mini__slider {
	flex: 1;
	min-width: 3rem;
	height: 1.25rem;
	accent-color: currentColor;
	cursor: pointer;
}