/* Mavonx Sudoku — frontend player */
:root {
	--mavonx-primary: #1F4FBF;
	--mavonx-accent:  #F2C94C;
	--mavonx-dark:    #0E1A33;
	--mavonx-bg:        #fff;
	--mavonx-surface:   #f7f8fb;
	--mavonx-border:    #d8dee9;
	--mavonx-text:      #1c2536;
	--mavonx-muted:     #6b7280;
	--mavonx-given:     #0e1a33;
	--mavonx-input:     #1F4FBF;
	--mavonx-conflict:  #d83a52;
	--mavonx-highlight: rgba(31,79,191,0.07);   /* selected cell — soft blue */
	--mavonx-peer:      rgba(120,128,148,0.07); /* row/col/box — neutral gray, never reads as navy */
	--mavonx-same:      rgba(242,201,76,0.18);  /* same-digit glow — soft yellow */
	--mavonx-radius:    14px;
	--mavonx-shadow:    0 12px 30px rgba(14,26,51,0.08);
}

.mavonx-puzzle.is-dark {
	--mavonx-bg:        #0e1a33;
	--mavonx-surface:   #142447;
	--mavonx-border:    #2a3a66;
	--mavonx-text:      #e9eef9;
	--mavonx-muted:     #95a4c5;
	--mavonx-given:     #e9eef9;
	--mavonx-input:     #f2c94c;
	--mavonx-highlight: rgba(242,201,76,0.10);
	--mavonx-peer:      rgba(242,201,76,0.04);
	--mavonx-same:      rgba(242,201,76,0.16);
}

.mavonx-puzzle * { box-sizing: border-box; }

.mavonx-puzzle {
	max-width: 540px;
	margin: 24px auto;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	color: var(--mavonx-text);
	background: var(--mavonx-bg);
	border-radius: var(--mavonx-radius);
	box-shadow: var(--mavonx-shadow);
	padding: 18px;
}

.mavonx-puzzle__header {
	display: flex; justify-content: space-between; align-items: center;
	margin-bottom: 12px;
}
.mavonx-puzzle__title { display: flex; align-items: center; gap: 10px; }
.mavonx-puzzle__date { font-size: 14px; color: var(--mavonx-muted); }
.mavonx-puzzle__stats { display: flex; align-items: center; gap: 8px; margin-left: auto; }
/* Start button — appears before the user has engaged. Replaced by timer + pause
   once they click Start or click any cell on the board. */
.mavonx-stat-start {
	background: var(--mavonx-accent);
	color: var(--mavonx-dark);
	border: 0;
	padding: 7px 16px;
	border-radius: 999px;
	font-weight: 700; font-size: 14px;
	cursor: pointer;
	display: inline-flex; align-items: center; gap: 7px;
	box-shadow: 0 2px 8px rgba(14,26,51,0.10);
	transition: transform 0.06s ease, filter 0.1s ease, box-shadow 0.15s ease;
}
.mavonx-stat-start:hover  { filter: brightness(1.05); box-shadow: 0 4px 14px rgba(14,26,51,0.18); }
.mavonx-stat-start:active { transform: scale(0.96); }
.mavonx-stat-start__icon  { font-size: 10px; line-height: 1; transform: translateY(-0.5px); }
.mavonx-stat-start[hidden] { display: none !important; }
.mavonx-puzzle--bare .mavonx-puzzle__title-spacer { flex: 1; }
.mavonx-stat {
	font-variant-numeric: tabular-nums;
	font-weight: 700; font-size: 18px;
	background: var(--mavonx-surface);
	padding: 6px 12px; border-radius: 999px;
	min-width: 60px; text-align: center;
}

.mavonx-difficulty {
	display: inline-block;
	font-size: 12px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
	padding: 3px 8px; border-radius: 6px; color: #fff;
}
.mavonx-difficulty--easy   { background: #2ec27e; }
.mavonx-difficulty--medium { background: #1F4FBF; background: var(--mavonx-primary); }
.mavonx-difficulty--hard   { background: #d83a52; }

/* Board */
.mavonx-board {
	display: grid;
	grid-template-columns: repeat(var(--mavonx-n, 9), 1fr);
	aspect-ratio: 1 / 1;
	background: var(--mavonx-text);
	gap: 1px;
	border: 3px solid var(--mavonx-text);
	border-radius: 8px;
	overflow: hidden;
	user-select: none;
	touch-action: manipulation;
}
.mavonx-puzzle .mavonx-cell {
	background: #ffffff !important;
	display: flex; align-items: center; justify-content: center;
	font-size: clamp(18px, 5vw, 28px); font-weight: 600;
	color: var(--mavonx-input);
	cursor: pointer;
	position: relative;
	transition: background-color 0.08s ease;
}
.mavonx-puzzle .mavonx-cell.is-given { color: var(--mavonx-given); font-weight: 800; }
.mavonx-puzzle .mavonx-cell.is-selected { background: #e7eefb !important; }
.mavonx-puzzle .mavonx-cell.is-peer     { background: #f3f4f7 !important; }
.mavonx-puzzle .mavonx-cell.is-same     { background: #fff5d4 !important; }
.mavonx-puzzle .mavonx-cell.is-error    { color: var(--mavonx-conflict); animation: mvx-shake 0.25s; }
.mavonx-puzzle .mavonx-cell.is-hinted   { box-shadow: inset 0 0 0 3px var(--mavonx-accent); }
.mavonx-puzzle .mavonx-cell:focus,
.mavonx-puzzle .mavonx-cell:focus-visible { outline: 2px solid var(--mavonx-primary) !important; outline-offset: -2px; }

/* Box borders — class-based so they work for any N (player JS tags box-edge cells). */
.mavonx-cell.is-box-r                { box-shadow: inset -2px 0 0 0 var(--mavonx-text); }
.mavonx-cell.is-box-b                { box-shadow: inset 0 -2px 0 0 var(--mavonx-text); }
.mavonx-cell.is-box-r.is-box-b       { box-shadow: inset -2px -2px 0 0 var(--mavonx-text); }

/* Pencil marks — auto-wrap; works for 9, 16, or 25 candidate symbols. */
.mavonx-pencil {
	position: absolute; inset: 2px;
	display: flex; flex-wrap: wrap; align-content: flex-start; justify-content: center;
	gap: 1px;
	font-size: 8px; font-weight: 600; color: var(--mavonx-muted);
	pointer-events: none;
	line-height: 1;
}
.mavonx-pencil span { padding: 0 1px; }
.mavonx-puzzle--n16 .mavonx-pencil { font-size: 6px; }
.mavonx-puzzle--n25 .mavonx-pencil { font-size: 5px; }

@keyframes mvx-shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-3px); } 75% { transform: translateX(3px); } }

/* Controls */
.mavonx-controls { margin-top: 16px; }
.mavonx-numpad {
	display: grid;
	grid-template-columns: repeat(var(--mavonx-n, 9), 1fr);
	gap: 6px; margin-bottom: 12px;
}
/* Larger N: number pad wraps to multiple rows so keys stay tappable. */
.mavonx-numpad.mavonx-numpad--wide { grid-template-columns: repeat(8, 1fr); }
.mavonx-puzzle--n25 .mavonx-numpad { grid-template-columns: repeat(9, 1fr); }
.mavonx-numkey {
	background: var(--mavonx-surface);
	border: 1px solid var(--mavonx-border);
	border-radius: 10px;
	padding: 12px 0; font-size: 18px; font-weight: 700;
	color: var(--mavonx-text); cursor: pointer;
	transition: transform 0.06s ease, background 0.1s;
}
.mavonx-puzzle--n16 .mavonx-numkey,
.mavonx-puzzle--n25 .mavonx-numkey { padding: 10px 0; font-size: 16px; }
.mavonx-numkey:hover { background: var(--mavonx-highlight); }
.mavonx-numkey:active { transform: scale(0.96); }
.mavonx-numkey.is-exhausted { opacity: 0.35; cursor: default; }

.mavonx-actions, .mavonx-extras {
	display: flex; flex-wrap: wrap; gap: 8px;
}
.mavonx-extras { margin-top: 8px; }
.mavonx-btn {
	background: var(--mavonx-primary);
	color: #fff; border: 0;
	padding: 9px 14px; border-radius: 999px;
	font-weight: 600; font-size: 14px; cursor: pointer;
	display: inline-flex; align-items: center; gap: 6px;
	transition: filter 0.1s, transform 0.06s;
}
.mavonx-btn:hover { filter: brightness(1.05); }
.mavonx-btn:active { transform: scale(0.97); }
.mavonx-btn[aria-pressed="true"] { background: var(--mavonx-dark); }
.mavonx-btn--accent { background: var(--mavonx-accent); color: var(--mavonx-dark); }
.mavonx-btn--ghost { background: var(--mavonx-surface); color: var(--mavonx-text); border: 1px solid var(--mavonx-border); }
.mavonx-iconbtn { background: var(--mavonx-surface); border: 1px solid var(--mavonx-border); color: var(--mavonx-text); padding: 6px; border-radius: 999px; cursor: pointer; }
.mavonx-iconbtn svg { display: block; }
.mavonx-hintbadge { background: rgba(0,0,0,0.15); border-radius: 999px; padding: 0 7px; font-size: 12px; }

.mavonx-status { margin-top: 10px; font-size: 14px; color: var(--mavonx-muted); min-height: 20px; }
.mavonx-status.is-error { color: var(--mavonx-conflict); }
.mavonx-status.is-ok    { color: #2ec27e; }

/* Win modal */
.mavonx-modal {
	border: 0; border-radius: 16px; padding: 0;
	max-width: 380px; box-shadow: 0 30px 60px rgba(0,0,0,0.25);
}
.mavonx-modal::backdrop { background: rgba(14,26,51,0.5); backdrop-filter: blur(2px); }
.mavonx-modal__inner {
	padding: 28px 24px; text-align: center;
	background: var(--mavonx-bg); color: var(--mavonx-text);
}
.mavonx-trophy { color: var(--mavonx-accent); margin-bottom: 6px; }
.mavonx-modal__title { margin: 0 0 6px; font-size: 24px; }
.mavonx-modal__sub   { margin: 0 0 18px; color: var(--mavonx-muted); }
.mavonx-modal__actions { display: flex; gap: 8px; justify-content: center; }

/* Promo */
.mavonx-promo {
	max-width: 540px; margin: 16px auto;
	background: linear-gradient(135deg, var(--mavonx-surface), #fff);
	border: 1px solid var(--mavonx-border); border-radius: var(--mavonx-radius);
	padding: 14px 16px;
}
.mavonx-promo-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--mavonx-muted); margin-bottom: 6px; }
.mavonx-promo-label .mavonx-promo-link {
	display: inline-flex; align-items: center; gap: 4px;
	color: var(--mavonx-primary);
	text-decoration: none;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: none;
	font-size: 14px;
	transition: gap 0.15s ease, color 0.1s ease;
}
.mavonx-promo-label .mavonx-promo-link:hover {
	gap: 8px;
	text-decoration: underline;
}
.mavonx-promo-body a { color: var(--mavonx-primary); text-decoration: none; font-weight: 600; }
.mavonx-promo-body a:hover { text-decoration: underline; }

/* Leaderboard */
.mavonx-leaderboard {
	max-width: 540px; margin: 20px auto 0;
	padding: 14px 18px;
	background: var(--mavonx-surface);
	border-radius: var(--mavonx-radius);
}
.mavonx-leaderboard h3 { margin: 0 0 10px; font-size: 16px; }
.mavonx-leaderboard__list { list-style: none; margin: 0; padding: 0; }
.mavonx-leaderboard__list li {
	display: grid; grid-template-columns: 40px 1fr auto;
	align-items: center; padding: 6px 0; gap: 10px;
	border-bottom: 1px dashed var(--mavonx-border);
}
.mavonx-leaderboard__list li:last-child { border-bottom: 0; }
.mavonx-leaderboard__rank { color: var(--mavonx-muted); font-weight: 700; }
.mavonx-leaderboard__time { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--mavonx-primary); }

/* Tabs (today widget) */
.mavonx-tabs__nav { display: flex; justify-content: center; gap: 6px; margin-bottom: 8px; }
.mavonx-tabs__btn {
	background: var(--mavonx-surface); border: 1px solid var(--mavonx-border);
	color: var(--mavonx-text); padding: 8px 14px; border-radius: 999px;
	font-weight: 700; cursor: pointer;
}
.mavonx-tabs__btn[aria-selected="true"] { background: var(--mavonx-primary); color: #fff; border-color: var(--mavonx-primary); }

/* Streak */
.mavonx-streak {
	display: inline-flex; align-items: center; gap: 6px;
	background: var(--mavonx-accent); color: var(--mavonx-dark);
	padding: 4px 10px; border-radius: 999px; font-weight: 700; font-size: 13px;
}
.mavonx-streak::before { content: "🔥"; }

/* Archive */
.mavonx-archive { list-style: none; padding: 0; margin: 1em 0; }
.mavonx-archive li { padding: 6px 0; border-bottom: 1px solid var(--mavonx-border); }
.mavonx-archive a { text-decoration: none; color: var(--mavonx-text); display: flex; gap: 8px; align-items: center; }

/* Print */
@media print {
	body * { visibility: hidden; }
	.mavonx-puzzle, .mavonx-puzzle * { visibility: visible; }
	.mavonx-puzzle { position: absolute; inset: 0; box-shadow: none; }
	.mavonx-controls, .mavonx-puzzle__stats, .mavonx-status, .mavonx-modal,
	.mavonx-leaderboard, .mavonx-promo, .mavonx-extras, .mavonx-actions { display: none !important; }
	.mavonx-board { border-color: #000 !important; }
	.mavonx-cell { color: #000 !important; }
}

/* Responsive */
@media (max-width: 520px) {
	.mavonx-numpad { gap: 4px; }
	.mavonx-numkey { padding: 10px 0; font-size: 16px; }
	.mavonx-puzzle { padding: 12px; }
}