/*!
 * Byte42 Space Invaders – Stylesheet
 * Nur Systemschriften, keine externen Ressourcen.
 */

.b42si {
	--b42si-cab: #16171c;
	--b42si-cab-deep: #0b0c10;
	--b42si-ink: #ece9e0;
	--b42si-dim: #8e909b;
	--b42si-hot: #ff6a3d;
	--b42si-go: #4dff9e;
	--b42si-line: rgba(236, 233, 224, 0.16);
	--b42si-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "DejaVu Sans Mono", monospace;

	max-width: 620px;
	margin: 2rem auto;
	padding: 14px 14px 16px;
	background: var(--b42si-cab);
	border: 1px solid var(--b42si-line);
	border-radius: 4px;
	box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.9);
	font-family: var(--b42si-mono);
	color: var(--b42si-ink);
	line-height: 1.45;
	box-sizing: border-box;
}

.b42si *,
.b42si *::before,
.b42si *::after {
	box-sizing: inherit;
}

/* --- Marquee ------------------------------------------------- */

.b42si-marquee {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 12px;
	flex-wrap: wrap;
	margin: 0 0 10px;
	padding-bottom: 8px;
	border-bottom: 2px solid var(--b42si-hot);
}

.b42si-title {
	margin: 0;
	font-family: var(--b42si-mono);
	font-size: clamp(0.95rem, 3.2vw, 1.15rem);
	font-weight: 700;
	letter-spacing: 0.26em;
	text-transform: uppercase;
	color: var(--b42si-ink);
}

.b42si-credit {
	font-size: 0.68rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--b42si-hot);
}

/* --- HUD ----------------------------------------------------- */

.b42si-hud {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 8px;
	margin: 0 0 10px;
	padding: 0;
	list-style: none;
}

.b42si-hud > li {
	margin: 0;
	padding: 6px 8px;
	background: var(--b42si-cab-deep);
	border: 1px solid var(--b42si-line);
}

.b42si-hud dt,
.b42si-hud .b42si-label {
	display: block;
	margin: 0 0 2px;
	font-size: 0.6rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--b42si-dim);
}

.b42si-hud dd,
.b42si-hud .b42si-value {
	display: block;
	margin: 0;
	font-size: 0.98rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.06em;
}

.b42si-lives {
	display: flex;
	align-items: center;
	gap: 4px;
	min-height: 1.42em;
}

/* Mini-Raumschiff als Lebensanzeige, rein aus Box-Shadows gebaut */
.b42si-life {
	width: 3px;
	height: 3px;
	background: transparent;
	box-shadow:
		9px 0 var(--b42si-go),
		6px 3px var(--b42si-go), 9px 3px var(--b42si-go), 12px 3px var(--b42si-go),
		0 6px var(--b42si-go), 3px 6px var(--b42si-go), 6px 6px var(--b42si-go),
		9px 6px var(--b42si-go), 12px 6px var(--b42si-go), 15px 6px var(--b42si-go), 18px 6px var(--b42si-go),
		0 9px var(--b42si-go), 3px 9px var(--b42si-go), 6px 9px var(--b42si-go),
		9px 9px var(--b42si-go), 12px 9px var(--b42si-go), 15px 9px var(--b42si-go), 18px 9px var(--b42si-go);
	margin-right: 18px;
	transform: translateY(-4px);
}

/* --- Bildschirm ---------------------------------------------- */

.b42si-stage {
	position: relative;
	display: block;
	width: 100%;
	aspect-ratio: 600 / 660;
	background: #05060a;
	border: 1px solid var(--b42si-line);
	outline-offset: 3px;
	cursor: crosshair;
	touch-action: none;
	overflow: hidden;
}

.b42si-stage:focus-visible,
.b42si-stage:focus {
	outline: 3px solid var(--b42si-hot);
}

.b42si-canvas {
	display: block;
	width: 100%;
	height: 100%;
	image-rendering: pixelated;
	image-rendering: crisp-edges;
}

.b42si-scanlines {
	position: absolute;
	inset: 0;
	pointer-events: none;
	background: repeating-linear-gradient(
		to bottom,
		rgba(0, 0, 0, 0.22) 0,
		rgba(0, 0, 0, 0.22) 1px,
		rgba(0, 0, 0, 0) 1px,
		rgba(0, 0, 0, 0) 3px
	);
	mix-blend-mode: multiply;
}

.b42si[data-scanlines="off"] .b42si-scanlines {
	display: none;
}

/* Hinweis, solange der Bildschirm keinen Tastaturfokus hat */
.b42si-focushint {
	position: absolute;
	left: 50%;
	bottom: 10px;
	transform: translateX(-50%);
	padding: 5px 10px;
	background: rgba(5, 6, 10, 0.88);
	border: 1px solid var(--b42si-hot);
	color: var(--b42si-ink);
	font-size: 0.66rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	white-space: nowrap;
	pointer-events: none;
}

.b42si-stage:focus .b42si-focushint,
.b42si-stage:focus-within .b42si-focushint {
	display: none;
}

.b42si-hint-touch {
	display: none;
}

@media (pointer: coarse), (hover: none) {
	.b42si-hint-key {
		display: none;
	}
	.b42si-hint-touch {
		display: inline;
	}
}

/* --- Tempo-Regler -------------------------------------------- */

.b42si-tempo {
	display: flex;
	align-items: center;
	gap: 8px;
	flex: 1 1 100%;
	padding: 6px 10px;
	background: var(--b42si-cab-deep);
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
}

.b42si-tempo-label {
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--b42si-dim);
	white-space: nowrap;
}

.b42si-tempo-select {
	flex: 1 1 auto;
	min-height: 40px;
	padding: 6px 8px;
	background: #22242c;
	color: var(--b42si-ink);
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
	font-family: inherit;
	font-size: 0.85rem;
	cursor: pointer;
}

.b42si-tempo-select:focus-visible {
	outline: 3px solid var(--b42si-hot);
	outline-offset: 2px;
}

/* --- Namenseingabe nach Spielende ---------------------------- */

.b42si-nameentry {
	margin-top: 10px;
	padding: 12px;
	background: var(--b42si-cab-deep);
	border: 2px solid var(--b42si-hot);
	border-radius: 2px;
}

.b42si-nameentry[hidden] {
	display: none;
}

.b42si-nameentry-lead {
	margin: 0 0 8px;
	font-size: 0.82rem;
	line-height: 1.5;
	color: var(--b42si-ink);
}

.b42si-nameentry-row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
}

.b42si-nameentry label {
	flex: 1 1 100%;
	font-size: 0.68rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--b42si-dim);
}

.b42si-nameinput {
	width: 5.5ch;
	min-height: 48px;
	padding: 4px 8px;
	background: #22242c;
	color: var(--b42si-go);
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
	font-family: inherit;
	font-size: 1.6rem;
	font-weight: 700;
	letter-spacing: 0.24em;
	text-align: center;
	text-transform: uppercase;
}

.b42si-nameinput:focus-visible {
	outline: 3px solid var(--b42si-hot);
	outline-offset: 2px;
}

.b42si-nameerror {
	flex: 1 1 100%;
	margin: 0;
	min-height: 1.2em;
	font-size: 0.74rem;
	color: var(--b42si-hot);
}

.b42si-nameerror:empty {
	min-height: 0;
}

/* --- Bestenlisten -------------------------------------------- */

.b42si-board {
	margin-top: 10px;
	padding: 10px;
	background: var(--b42si-cab-deep);
	border: 1px solid var(--b42si-line);
}

.b42si-board-title {
	margin: 0 0 8px;
	font-family: inherit;
	font-size: 0.74rem;
	font-weight: 700;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--b42si-ink);
}

.b42si-tabs {
	display: flex;
	gap: 6px;
	margin-bottom: 8px;
}

.b42si-tab {
	flex: 1 1 0;
	min-height: 44px;
	padding: 6px 8px;
	background: transparent;
	color: var(--b42si-dim);
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
	font-family: inherit;
	font-size: 0.7rem;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	cursor: pointer;
}

.b42si-tab[aria-selected="true"] {
	color: var(--b42si-ink);
	border-color: var(--b42si-hot);
	box-shadow: inset 0 -3px 0 var(--b42si-hot);
}

.b42si-tab:focus-visible {
	outline: 3px solid var(--b42si-hot);
	outline-offset: 2px;
}

.b42si-board-list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.b42si-board-row {
	display: grid;
	grid-template-columns: 2.6em 4.2em 1fr;
	grid-template-areas:
		"rank name score"
		"rank meta meta";
	gap: 0 8px;
	padding: 7px 4px;
	border-bottom: 1px solid var(--b42si-line);
}

.b42si-board-row:last-child {
	border-bottom: 0;
}

.b42si-board-rank {
	grid-area: rank;
	align-self: center;
	font-size: 0.9rem;
	font-variant-numeric: tabular-nums;
	color: var(--b42si-dim);
}

.b42si-board-name {
	grid-area: name;
	font-size: 1rem;
	font-weight: 700;
	letter-spacing: 0.14em;
	color: var(--b42si-go);
}

.b42si-board-score {
	grid-area: score;
	text-align: right;
	font-size: 1rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
	color: var(--b42si-ink);
}

.b42si-board-meta {
	grid-area: meta;
	font-size: 0.66rem;
	color: var(--b42si-dim);
}

.b42si-board-row:first-child .b42si-board-name,
.b42si-board-row:first-child .b42si-board-score {
	color: var(--b42si-hot);
}

.b42si-board-empty {
	padding: 10px 4px;
	font-size: 0.76rem;
	color: var(--b42si-dim);
}

.b42si-board-note {
	margin: 8px 0 0;
	font-size: 0.68rem;
	line-height: 1.5;
	color: var(--b42si-dim);
}

.b42si-board-clear {
	margin-top: 8px;
	width: 100%;
}

/* --- Bedienleiste -------------------------------------------- */

.b42si-controls {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 10px;
}

.b42si-btn {
	flex: 1 1 auto;
	min-height: 44px;
	padding: 8px 12px;
	background: var(--b42si-cab-deep);
	color: var(--b42si-ink);
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
	font-family: inherit;
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	cursor: pointer;
	transition: background-color 0.12s ease, border-color 0.12s ease;
}

.b42si-btn:hover {
	background: #1d1f26;
	border-color: var(--b42si-hot);
}

.b42si-btn:focus-visible {
	outline: 3px solid var(--b42si-hot);
	outline-offset: 2px;
}

.b42si-btn[aria-pressed="true"] {
	border-color: var(--b42si-go);
	color: var(--b42si-go);
}

/* --- Touch-Pad ----------------------------------------------- */

.b42si-pad {
	display: none;
	grid-template-columns: 1fr 1fr 1.4fr;
	gap: 8px;
	margin-top: 8px;
}

.b42si-pad .b42si-btn {
	min-height: 62px;
	font-size: 1.05rem;
	letter-spacing: 0;
	user-select: none;
	-webkit-user-select: none;
	-webkit-tap-highlight-color: transparent;
}

/* Elemente, die nur bei Fingerbedienung sinnvoll sind */
.b42si-touchonly {
	display: none;
}

@media (pointer: coarse), (hover: none) {
	.b42si-pad {
		display: grid;
	}
	.b42si-touchonly {
		display: block;
	}
	.b42si-stage {
		cursor: default;
	}
	/* Auf Touchgeräten bleibt der Hinweis stehen, bis wirklich gespielt wird. */
	.b42si-stage:focus .b42si-focushint,
	.b42si-stage:focus-within .b42si-focushint {
		display: block;
	}
}

/* Steuerungsmodi aus dem Shortcode */
.b42si[data-controls="display"] .b42si-pad {
	display: none;
}

.b42si[data-controls="display"] .b42si-touchonly {
	display: block;
}

.b42si[data-controls="buttons"] .b42si-touchonly {
	display: none;
}

.b42si[data-state="playing"] .b42si-focushint {
	display: none;
}

/* --- Fußzeile / Hilfe ---------------------------------------- */

.b42si-help {
	margin: 10px 0 0;
	padding: 8px 10px;
	background: var(--b42si-cab-deep);
	border: 1px solid var(--b42si-line);
	font-size: 0.7rem;
	line-height: 1.6;
	color: var(--b42si-dim);
}

.b42si-help kbd {
	display: inline-block;
	padding: 1px 5px;
	background: #22242c;
	border: 1px solid var(--b42si-line);
	border-radius: 2px;
	font-family: inherit;
	font-size: 0.95em;
	color: var(--b42si-ink);
}

.b42si-help b {
	color: var(--b42si-ink);
	font-weight: 700;
}

/* --- Nur für Screenreader ------------------------------------ */

.b42si-sr {
	position: absolute !important;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0 0 0 0);
	clip-path: inset(50%);
	white-space: nowrap;
	border: 0;
}

/* --- Rücksicht auf Bewegungspräferenzen ---------------------- */

@media (prefers-reduced-motion: reduce) {
	.b42si-scanlines {
		display: none;
	}
	.b42si-btn {
		transition: none;
	}
}

@media (max-width: 480px) {
	.b42si {
		margin: 1rem auto;
		padding: 10px;
	}
	.b42si-hud {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

/* --- Kontrastmodus ------------------------------------------- */

@media (forced-colors: active) {
	.b42si-btn {
		border: 1px solid ButtonBorder;
	}
	.b42si-scanlines {
		display: none;
	}
}