:root {
	--bg: #f6f1e7;
	--panel: #fffdf8;
	--ink: #1d1a16;
	--ink-soft: #5c544a;
	--line: #ddd3c2;
	--tile: #efe8d9;
	--tile-ink: #1d1a16;
	--sel: #4a4336;
	--sel-ink: #fdfbf5;
	--l0: #e4bb3f;
	--l1: #8aa95b;
	--l2: #5b8ac0;
	--l3: #9a79c4;
	--bad: #b5503f;
	--radius: 10px;
	--font: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
	--sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #17150f;
		--panel: #201d16;
		--ink: #f1ece0;
		--ink-soft: #a79d8b;
		--line: #3a342a;
		--tile: #2e2a21;
		--tile-ink: #f1ece0;
		--sel: #e6dcc6;
		--sel-ink: #17150f;
		--l0: #c79f2c;
		--l1: #6f8c47;
		--l2: #4a74a6;
		--l3: #8064a8;
		--bad: #c0604e;
	}
}

* { box-sizing: border-box; }

body {
	margin: 0;
	background: var(--bg);
	color: var(--ink);
	font-family: var(--font);
	-webkit-text-size-adjust: 100%;
}

a { color: inherit; }

.wrap {
	max-width: 620px;
	margin: 0 auto;
	padding: 18px 16px 48px;
}

header.top {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 12px;
	border-bottom: 1px solid var(--line);
	padding-bottom: 10px;
	margin-bottom: 18px;
}

header.top h1 {
	font-size: 1.35rem;
	margin: 0;
	letter-spacing: 0.01em;
}

header.top .home {
	font-family: var(--sans);
	font-size: 0.8rem;
	color: var(--ink-soft);
	text-decoration: none;
}

header.top .home:hover { color: var(--ink); }

.puzzle-line {
	font-family: var(--sans);
	font-size: 0.82rem;
	color: var(--ink-soft);
	display: flex;
	justify-content: space-between;
	gap: 10px;
	margin-bottom: 14px;
}

.prompt {
	text-align: center;
	font-size: 0.95rem;
	color: var(--ink-soft);
	margin: 0 0 14px;
}

#solved { display: grid; gap: 8px; margin-bottom: 8px; }

.group {
	border-radius: var(--radius);
	padding: 12px 14px;
	text-align: center;
	color: #15130e;
}

.group.fresh { animation: pop 260ms ease-out; }

.group .label {
	font-family: var(--sans);
	font-weight: 700;
	font-size: 0.86rem;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.group .items { font-size: 0.95rem; margin-top: 2px; }

.group .ref {
	font-family: var(--sans);
	font-size: 0.72rem;
	opacity: 0.75;
	margin-top: 4px;
}

.l0 { background: var(--l0); }
.l1 { background: var(--l1); }
.l2 { background: var(--l2); }
.l3 { background: var(--l3); }

#grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 8px;
}

.tile {
	appearance: none;
	border: 1px solid transparent;
	background: var(--tile);
	color: var(--tile-ink);
	border-radius: var(--radius);
	min-height: 76px;
	padding: 6px 4px;
	font-family: var(--sans);
	font-weight: 600;
	font-size: 0.82rem;
	line-height: 1.15;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	cursor: pointer;
	word-break: break-word;
	hyphens: auto;
	transition: background 120ms ease, transform 80ms ease;
}

.tile:hover { border-color: var(--line); }
.tile.sel { background: var(--sel); color: var(--sel-ink); }
.tile.long { font-size: 0.68rem; }
.tile.vlong { font-size: 0.58rem; letter-spacing: 0; }
.tile:active { transform: scale(0.97); }

.tile.wrong { animation: shake 420ms ease; }

@keyframes shake {
	0%, 100% { transform: translateX(0); }
	20% { transform: translateX(-5px); }
	40% { transform: translateX(5px); }
	60% { transform: translateX(-3px); }
	80% { transform: translateX(3px); }
}

@keyframes pop {
	from { opacity: 0; transform: translateY(-6px); }
	to { opacity: 1; transform: none; }
}

.mistakes {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font-family: var(--sans);
	font-size: 0.8rem;
	color: var(--ink-soft);
	margin: 18px 0 12px;
}

.dot {
	width: 11px;
	height: 11px;
	border-radius: 50%;
	background: var(--ink-soft);
}

.dot.gone { background: transparent; border: 1px solid var(--line); }

.controls[hidden] { display: none; }

.controls {
	display: flex;
	gap: 8px;
	justify-content: center;
	flex-wrap: wrap;
}

button.btn {
	font-family: var(--sans);
	font-size: 0.85rem;
	padding: 9px 18px;
	border-radius: 999px;
	border: 1px solid var(--ink-soft);
	background: transparent;
	color: var(--ink);
	cursor: pointer;
}

button.btn:disabled { opacity: 0.35; cursor: default; }
button.btn.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.toast {
	min-height: 1.3em;
	text-align: center;
	font-family: var(--sans);
	font-size: 0.85rem;
	color: var(--bad);
	margin: 10px 0 0;
}

.done {
	margin-top: 22px;
	border: 1px solid var(--line);
	background: var(--panel);
	border-radius: var(--radius);
	padding: 16px;
	text-align: center;
}

.done h2 { margin: 0 0 6px; font-size: 1.1rem; }
.done p { margin: 6px 0; font-size: 0.92rem; color: var(--ink-soft); }
.done .rows { display: grid; gap: 4px; justify-content: center; margin: 12px 0 4px; }

.done .row {
	display: flex;
	align-items: center;
	gap: 10px;
	font-family: var(--sans);
	font-size: 0.78rem;
	color: var(--ink-soft);
}

.done .row .n { width: 1.2em; text-align: right; }
.done .row .sq { font-size: 1.05rem; letter-spacing: 3px; }
.done .row.hit .n { color: var(--ink); font-weight: 700; }

.notice {
	font-family: var(--sans);
	font-size: 0.82rem;
	color: var(--ink-soft);
	background: var(--panel);
	border: 1px solid var(--line);
	border-radius: 8px;
	padding: 8px 12px;
	margin: 0 0 14px;
	text-align: center;
}

.reset-line { text-align: center; margin: 12px 0 0; }

.reset-line a {
	font-family: var(--sans);
	font-size: 0.78rem;
	color: var(--ink-soft);
	cursor: pointer;
}

.archive .locked {
	display: flex;
	justify-content: space-between;
	gap: 10px;
	font-family: var(--sans);
	font-size: 0.85rem;
	padding: 8px 10px;
	border: 1px dashed var(--line);
	border-radius: 8px;
	color: var(--ink-soft);
}

.archive .current { border-color: var(--ink-soft); }

.archive {
	margin-top: 30px;
	border-top: 1px solid var(--line);
	padding-top: 14px;
}

.archive h3 {
	font-family: var(--sans);
	font-size: 0.78rem;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--ink-soft);
	margin: 0 0 10px;
}

.archive ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }

.archive a {
	display: flex;
	justify-content: space-between;
	gap: 10px;
	font-family: var(--sans);
	font-size: 0.85rem;
	text-decoration: none;
	padding: 8px 10px;
	border: 1px solid var(--line);
	border-radius: 8px;
	background: var(--panel);
}

.archive a:hover { border-color: var(--ink-soft); }
.archive .state { color: var(--ink-soft); font-size: 0.78rem; }

dialog.sheet {
	border: 1px solid var(--line);
	border-radius: var(--radius);
	background: var(--panel);
	color: var(--ink);
	max-width: 420px;
	padding: 20px;
}

dialog.sheet::backdrop { background: rgba(0, 0, 0, 0.5); }
dialog.sheet h2 { margin: 0 0 8px; font-size: 1.05rem; }
dialog.sheet ul { padding-left: 18px; font-size: 0.9rem; line-height: 1.5; }

footer.foot {
	margin-top: 28px;
	font-family: var(--sans);
	font-size: 0.74rem;
	color: var(--ink-soft);
	text-align: center;
	line-height: 1.6;
}

@media (max-width: 420px) {
	.tile { min-height: 68px; font-size: 0.74rem; }
	.tile.long { font-size: 0.62rem; }
	.tile.vlong { font-size: 0.52rem; }
	#grid, #solved { gap: 6px; }
}