/**
 * AL60 Sudoku v1.2.0
 * Responsive mobile layout + optional AL60 Game Core bridge.
 * All rules remain scoped below .al60-sudoku.
 */

.al60-sudoku {
	--al60-font: var(--font-base, "Segoe UI", Arial, Helvetica, sans-serif);
	--al60-font-size: var(--font-size, 19px);
	--al60-text: var(--color-primary, #1f2933);
	--al60-text-muted: var(--color-muted, #4b5563);
	--al60-surface: var(--color-bg, #ffffff);
	--al60-surface-soft: var(--color-surface, #f4efe6);
	--al60-border: var(--color-border, #d8d3c7);
	--al60-primary: var(--color-accent, #1f6f5b);
	--al60-primary-dark: var(--color-accent-dark, #145443);
	--al60-primary-soft: #e8f3ef;
	--al60-accent-soft: #fff0bd;
	--al60-focus: var(--color-focus, #005fcc);
	--al60-radius-sm: var(--radius, 10px);
	--al60-radius-lg: var(--radius-lg, 20px);
	--al60-tap-min: 48px;

	width: 100%;
	max-width: 680px;
	min-width: 0;
	margin: 0 auto;
	padding: clamp(12px, 3vw, 20px);
	background: var(--al60-surface);
	border: 1px solid var(--al60-border);
	border-radius: var(--al60-radius-lg);
	box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
	font-family: var(--al60-font);
	font-size: var(--al60-font-size);
	line-height: 1.4;
	color: var(--al60-text);
	overflow-x: hidden;
	isolation: isolate;
}

.al60-sudoku,
.al60-sudoku *,
.al60-sudoku *::before,
.al60-sudoku *::after {
	box-sizing: border-box;
}

.al60-sudoku-bar,
.al60-sudoku-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	align-items: flex-end;
	margin: 12px 0;
	min-width: 0;
}

.al60-sudoku-label {
	font-weight: 700;
}

.al60-sudoku-select {
	min-width: 0;
	min-height: var(--al60-tap-min);
	margin: 0;
	padding: 8px 36px 8px 12px;
	border: 2px solid var(--al60-border);
	border-radius: var(--al60-radius-sm);
	background: var(--al60-surface);
	color: var(--al60-text);
	font: inherit;
	font-size: 1rem;
}

.al60-sudoku .al60-sudoku-btn {
	appearance: none;
	min-width: 0;
	min-height: var(--al60-tap-min);
	max-width: 100%;
	margin: 0;
	padding: 10px 18px;
	border: 2px solid var(--al60-primary);
	border-radius: var(--al60-radius-sm);
	background: var(--al60-primary);
	color: #ffffff;
	font: inherit;
	font-weight: 700;
	line-height: 1.25;
	text-align: center;
	cursor: pointer;
	touch-action: manipulation;
}

.al60-sudoku .al60-sudoku-btn:hover {
	background: var(--al60-primary-dark);
	border-color: var(--al60-primary-dark);
	color: #ffffff;
}

.al60-sudoku .al60-sudoku-btn-light {
	background: var(--al60-surface);
	border-color: var(--al60-border);
	color: var(--al60-text);
}

.al60-sudoku .al60-sudoku-btn-light:hover {
	background: var(--al60-primary-soft);
	border-color: var(--al60-primary);
	color: var(--al60-primary-dark);
}

.al60-sudoku-board-wrap {
	width: 100%;
	max-width: 560px;
	min-width: 0;
	margin: 14px auto;
	overflow: hidden;
}

.al60-sudoku-board {
	display: grid;
	grid-template-columns: repeat(9, minmax(0, 1fr));
	grid-template-rows: repeat(9, minmax(0, 1fr));
	width: 100%;
	max-width: 100%;
	min-width: 0;
	aspect-ratio: 1 / 1;
	margin: 0;
	border: 3px solid var(--al60-text);
	background: var(--al60-text);
	overflow: hidden;
	touch-action: manipulation;
}

.al60-sudoku .al60-sudoku-cell {
	appearance: none;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	min-width: 0;
	min-height: 0;
	margin: 0;
	padding: 0;
	border: 1px solid var(--al60-border);
	border-radius: 0;
	background: var(--al60-surface);
	color: var(--al60-primary);
	font: inherit;
	font-size: clamp(17px, 6.8vw, 30px);
	font-weight: 750;
	line-height: 1;
	text-align: center;
	cursor: pointer;
	user-select: none;
	touch-action: manipulation;
	overflow: hidden;
}

.al60-sudoku-cell[data-col="2"],
.al60-sudoku-cell[data-col="5"] {
	border-right: 3px solid var(--al60-text);
}

.al60-sudoku-cell[data-row="2"],
.al60-sudoku-cell[data-row="5"] {
	border-bottom: 3px solid var(--al60-text);
}

.al60-sudoku-cell.al60-sudoku-related {
	background: #f2f6f4;
}

.al60-sudoku-cell.al60-sudoku-same {
	background: var(--al60-primary-soft);
}

.al60-sudoku-cell.al60-sudoku-given {
	background: var(--al60-surface-soft);
	color: var(--al60-text);
	cursor: default;
}

.al60-sudoku-cell.al60-sudoku-selected {
	position: relative;
	z-index: 1;
	background: var(--al60-accent-soft);
	box-shadow: inset 0 0 0 3px var(--al60-primary);
}

.al60-sudoku-cell.al60-sudoku-wrong {
	background: #ffd8d8;
	color: #9d1717;
}

.al60-sudoku-pad {
	display: grid;
	grid-template-columns: repeat(5, minmax(0, 1fr));
	gap: 8px;
	width: 100%;
	max-width: 560px;
	min-width: 0;
	margin: 14px auto;
}

.al60-sudoku .al60-sudoku-key {
	appearance: none;
	width: 100%;
	min-width: 0;
	min-height: 54px;
	margin: 0;
	padding: 8px 4px;
	border: 2px solid var(--al60-border);
	border-radius: var(--al60-radius-sm);
	background: var(--al60-surface);
	color: var(--al60-text);
	font: inherit;
	font-size: clamp(20px, 5vw, 25px);
	font-weight: 750;
	line-height: 1;
	cursor: pointer;
	touch-action: manipulation;
}

.al60-sudoku .al60-sudoku-key:hover,
.al60-sudoku .al60-sudoku-key:active {
	background: var(--al60-primary-soft);
	border-color: var(--al60-primary);
	color: var(--al60-primary-dark);
}

.al60-sudoku-cell:focus-visible,
.al60-sudoku-key:focus-visible,
.al60-sudoku-btn:focus-visible,
.al60-sudoku-select:focus-visible {
	position: relative;
	z-index: 2;
	outline: 3px solid var(--al60-focus);
	outline-offset: 2px;
}

.al60-sudoku-msg {
	display: block;
	min-height: 48px;
	margin: 12px 0 0;
	padding: 11px 14px;
	border: 1px solid var(--al60-border);
	border-left: 5px solid var(--al60-primary);
	border-radius: var(--al60-radius-sm);
	background: var(--al60-surface-soft);
	color: var(--al60-text-muted);
	font-size: 1rem;
	font-weight: 700;
}

.al60-sudoku-msg:empty {
	display: none;
}

.al60-sudoku-msg.al60-sudoku-ok,
.al60-sudoku-msg[data-tone="success"] {
	color: var(--al60-primary-dark);
	border-left-color: var(--al60-primary);
}

.al60-sudoku-msg.al60-sudoku-err,
.al60-sudoku-msg[data-tone="error"] {
	color: #9d1717;
	border-left-color: #9d1717;
}

/* Optional Game Core: keep native Sudoku sizing and only reuse shared behavior. */
.al60-sudoku.al60-game {
	width: 100%;
	overflow-x: hidden;
}

.al60-sudoku .al60-game__button.al60-sudoku-btn {
	width: auto;
}

@media (max-width: 600px) {
	.al60-sudoku {
		padding: 12px 10px;
		border-radius: 14px;
	}

	.al60-sudoku-bar {
		display: grid;
		grid-template-columns: 1fr;
		align-items: stretch;
	}

	.al60-sudoku-label,
	.al60-sudoku-select,
	.al60-sudoku-bar .al60-sudoku-btn,
	.al60-sudoku .al60-game__button.al60-sudoku-btn {
		width: 100%;
	}

	.al60-sudoku-board-wrap {
		max-width: 100%;
		margin-top: 12px;
		margin-bottom: 12px;
	}

	.al60-sudoku-board {
		border-width: 2px;
	}

	.al60-sudoku-cell[data-col="2"],
	.al60-sudoku-cell[data-col="5"] {
		border-right-width: 2px;
	}

	.al60-sudoku-cell[data-row="2"],
	.al60-sudoku-cell[data-row="5"] {
		border-bottom-width: 2px;
	}

	.al60-sudoku .al60-sudoku-cell {
		font-size: clamp(17px, 7.2vw, 26px);
	}

	.al60-sudoku-pad {
		grid-template-columns: repeat(3, minmax(0, 1fr));
		gap: 8px;
	}

	.al60-sudoku .al60-sudoku-key {
		min-height: 58px;
		font-size: 24px;
	}

	.al60-sudoku .al60-sudoku-key:last-child {
		grid-column: 1 / -1;
	}

	.al60-sudoku-actions {
		display: grid;
		grid-template-columns: repeat(2, minmax(0, 1fr));
		align-items: stretch;
	}

	.al60-sudoku-actions .al60-sudoku-btn {
		width: 100%;
	}

	.al60-sudoku-actions .al60-sudoku-btn:last-child {
		grid-column: 1 / -1;
	}
}

@media (max-width: 360px) {
	.al60-sudoku {
		padding-right: 8px;
		padding-left: 8px;
	}

	.al60-sudoku .al60-sudoku-cell {
		font-size: clamp(16px, 7vw, 23px);
	}

	.al60-sudoku .al60-sudoku-key {
		min-height: 54px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.al60-sudoku *,
	.al60-sudoku *::before,
	.al60-sudoku *::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}
}