/*
 * Demoscene page: a grid of demo cards, each with a CRT-style screen that
 * holds the poster until the visitor presses play (assets/js/demos.js).
 */

.pm-demos {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr));
	gap: var(--wp--preset--spacing--50);
	margin-top: var(--wp--preset--spacing--50);
}

/* The grid gap spaces the cards; the flow layout's block gap would push
   every card after the first out of line with its row. */
.pm-demos > .pm-demo {
	margin: 0;
}

.pm-demo {
	position: relative;
	display: flex;
	flex-direction: column;
	padding: var(--wp--preset--spacing--40);
	border: 1px solid var(--pm-line);
	background: linear-gradient(160deg, var(--pm-dusk), var(--pm-deep));
}

.pm-demo::before {
	content: "";
	position: absolute;
	inset: 0 0 auto;
	height: 2px;
	background: var(--pm-copper);
}

.pm-demo > .wp-block-heading {
	margin: 0;
	font-size: var(--wp--preset--font-size--large);
}

.pm-demo > .wp-block-buttons {
	margin-top: auto;
	padding-top: var(--wp--preset--spacing--30);
}

/* The screen keeps one 16:9 frame so the player replaces the poster
   without the card jumping. */
.pm-demo__screen.wp-block-image {
	position: relative;
	overflow: hidden;
	aspect-ratio: 16 / 9;
	margin: var(--wp--preset--spacing--30) 0 0;
	border: 1px solid var(--pm-line);
	border-radius: 1.25rem / 1rem;
	background: #000;
	box-shadow: 0 0 2.5rem rgb(185 150 255 / 0.18);
}

.pm-demo__screen img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
}

/* The 320x200 DOS frames are scaled up as hard pixels, as on a VGA screen. */
.pm-demo__screen.is-dos img {
	image-rendering: pixelated;
}

/* Scanlines and a curved-glass vignette over the poster. */
.pm-demo__screen::after {
	content: "";
	position: absolute;
	inset: 0;
	border-radius: inherit;
	background: repeating-linear-gradient(0deg, rgb(0 0 0 / 0.28) 0 1px, transparent 1px 3px);
	box-shadow: inset 0 0 3rem rgb(0 0 0 / 0.75);
	pointer-events: none;
}

.pm-demo__screen.is-playing::after {
	content: none;
}

.pm-demo__frame {
	display: block;
	width: 100%;
	height: 100%;
	border: 0;
}

.pm-demo__play {
	position: absolute;
	inset: auto auto 1rem 1rem;
	z-index: 1;
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	padding: 0.7rem 1.1rem;
	border: 1px solid var(--pm-violet);
	background: var(--pm-violet);
	color: var(--pm-night);
	font-family: var(--pm-mono);
	font-size: var(--wp--preset--font-size--small);
	font-weight: 500;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	cursor: pointer;
	transition: background-color 0.2s ease, border-color 0.2s ease;
}

.pm-demo__play::before {
	content: "";
	width: 0.7rem;
	height: 0.8rem;
	background: currentcolor;
	clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.pm-demo__play:hover,
.pm-demo__play:focus-visible {
	border-color: var(--pm-magenta);
	background: var(--pm-magenta);
}

@media (prefers-reduced-motion: reduce) {
	.pm-demo__play {
		transition: none;
	}
}

/* Decade headings divide the grid; the rule repeats the cards' top line. */
.pm-decade {
	display: flex;
	align-items: center;
	gap: var(--wp--preset--spacing--30);
	margin-top: var(--wp--preset--spacing--60);
	font-family: var(--pm-mono);
	font-size: var(--wp--preset--font-size--medium);
	letter-spacing: 0.2em;
	color: var(--pm-aurora);
}

.pm-decade::after {
	content: "";
	flex: 1;
	height: 1px;
	background: var(--pm-copper);
	opacity: 0.6;
}

.pm-decade + .pm-demos {
	margin-top: var(--wp--preset--spacing--40);
}