.scdev-sliding-puzzle{--sp-bg:#fff;--sp-surface:#f7f9fc;--sp-ink:#30343b;--sp-muted:#68727d;--sp-line:#d8dee7;--sp-tile:#3683cf;--sp-tile-ink:#fff;--sp-empty:#e7ebf1;--sp-accent:#217c6d;width:100%;box-sizing:border-box;padding:6px 12px;background:var(--sp-bg);color:var(--sp-ink);font:15px/1.45 system-ui,-apple-system,"Segoe UI",sans-serif;container-type:inline-size}
.scdev-sliding-puzzle *{box-sizing:border-box}
.scdev-sliding-puzzle .sp-shell{width:100%;max-width:920px;margin:0 auto;padding:12px;background:var(--sp-bg);color:var(--sp-ink);border:1px solid var(--sp-line);border-radius:12px;box-shadow:0 8px 28px #17253814}
.scdev-sliding-puzzle .sp-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:10px}
.scdev-sliding-puzzle .sp-eyebrow{font-size:11px;font-weight:800;letter-spacing:1.4px;color:var(--sp-accent);margin:0 0 4px}
.scdev-sliding-puzzle h1{font:650 clamp(25px,4cqw,38px)/1.1 system-ui,-apple-system,"Segoe UI",sans-serif!important;letter-spacing:-1.3px;margin:0;color:var(--sp-ink)!important}
.scdev-sliding-puzzle h1 span{color:var(--sp-accent)!important}
.scdev-sliding-puzzle .sp-header p{font-size:14px;margin:4px 0 0;color:var(--sp-muted)}
.scdev-sliding-puzzle .sp-stats{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.scdev-sliding-puzzle .sp-stats>div{min-width:76px;padding:6px 8px;text-align:center;border:1px solid var(--sp-line);border-radius:7px;background:var(--sp-surface)}
.scdev-sliding-puzzle .sp-stats span{display:block;font-size:11px;color:var(--sp-muted)}
.scdev-sliding-puzzle .sp-stats strong{display:block;font-size:17px;font-variant-numeric:tabular-nums;color:var(--sp-ink)}
.scdev-sliding-puzzle .sp-toolbar{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:0 0 6px}
.scdev-sliding-puzzle .sp-toolbar label{display:flex;align-items:center;gap:6px;margin-right:auto;font-size:13px;color:var(--sp-muted)}
.scdev-sliding-puzzle .sp-toolbar select,.scdev-sliding-puzzle .sp-toolbar button{min-height:36px;padding:6px 12px;border:1px solid var(--sp-line);border-radius:7px;background:var(--sp-surface)!important;color:var(--sp-ink)!important;font:inherit;cursor:pointer}
.scdev-sliding-puzzle .sp-toolbar .sp-primary{background:var(--sp-accent)!important;border-color:var(--sp-accent)!important;color:#fff!important}
.scdev-sliding-puzzle .sp-status{min-height:24px;margin:4px 0;color:var(--sp-muted);font-size:13px}
.scdev-sliding-puzzle .sp-board{--sp-gap:clamp(4px,1cqw,9px);display:grid;grid-template-columns:repeat(var(--sp-size),minmax(0,1fr));grid-template-rows:repeat(var(--sp-size),minmax(0,1fr));gap:var(--sp-gap);width:min(100%,min(680px,calc(100dvh - 250px)));aspect-ratio:1;margin:0 auto;padding:var(--sp-gap);border:6px solid #36534e;border-radius:12px;background:#36534e;box-shadow:0 8px 24px #17253824;touch-action:manipulation;outline-offset:3px}
.scdev-sliding-puzzle .sp-tile{display:grid;place-items:center;min-width:0;min-height:0;padding:0;border:0!important;border-radius:8px;background:var(--sp-tile)!important;color:var(--sp-tile-ink)!important;font:600 clamp(20px,5cqw,64px)/1 system-ui,-apple-system,"Segoe UI",sans-serif!important;font-variant-numeric:tabular-nums;box-shadow:0 3px 0 #14375a44,0 4px 9px #15284220;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent;transition:transform .08s ease,filter .08s ease}
.scdev-sliding-puzzle .sp-tile-row-0{background:#c94355!important;color:#fff!important}
.scdev-sliding-puzzle .sp-tile-row-1{background:#d4a72c!important;color:#fff!important}
.scdev-sliding-puzzle .sp-tile-row-2{background:#7561b8!important;color:#fff!important}
.scdev-sliding-puzzle .sp-tile-row-3{background:#237c66!important;color:#fff!important}
.scdev-sliding-puzzle .sp-tile-row-4{background:#5f5cae!important;color:#fff!important}
.scdev-sliding-puzzle .sp-tile:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}
.scdev-sliding-puzzle .sp-tile:focus-visible{outline:3px solid #e8b13d;outline-offset:2px}
.scdev-sliding-puzzle .sp-tile.sp-empty{background:var(--sp-empty)!important;color:transparent!important;box-shadow:inset 0 2px 6px #14233920;cursor:default}
.scdev-sliding-puzzle .sp-tile:disabled{opacity:1}
.scdev-sliding-puzzle .sp-footer{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-top:6px;color:var(--sp-muted);font-size:12px}
.scdev-sliding-puzzle :is(button,select){font-family:inherit}
.scdev-sliding-puzzle .sp-leaderboard-dialog{width:min(620px,calc(100vw - 24px));max-width:none;max-height:min(720px,calc(100dvh - 24px));margin:auto;padding:0;border:1px solid var(--sp-line);border-radius:10px;background:var(--sp-bg);color:var(--sp-ink);box-shadow:0 18px 60px #0005;overflow:hidden}
.scdev-sliding-puzzle .sp-leaderboard-dialog::backdrop{background:#101722a6;backdrop-filter:blur(2px)}
.scdev-sliding-puzzle .sp-leaderboard-content{display:flex;flex-direction:column;gap:8px;max-height:min(720px,calc(100dvh - 24px));padding:6px 12px;overflow:auto}
.scdev-sliding-puzzle .sp-leaderboard-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-bottom:6px;border-bottom:1px solid var(--sp-line)}
.scdev-sliding-puzzle .sp-leaderboard-header h2{margin:0;color:var(--sp-ink)!important;font:750 22px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif!important}
.scdev-sliding-puzzle .sp-leaderboard-header button{width:36px;height:36px;padding:0;border:1px solid var(--sp-line);border-radius:7px;background:var(--sp-surface);color:var(--sp-ink);font-size:22px;cursor:pointer}
.scdev-sliding-puzzle .sp-leaderboard-filter{display:flex;align-items:center;gap:6px;color:var(--sp-muted);font-size:13px}
.scdev-sliding-puzzle .sp-leaderboard-filter select{min-height:34px;padding:5px 8px;border:1px solid var(--sp-line);border-radius:6px;background:var(--sp-surface);color:var(--sp-ink);font:inherit}
.scdev-sliding-puzzle .sp-leaderboard-table-wrap{overflow:auto;overscroll-behavior:contain}
.scdev-sliding-puzzle .sp-leaderboard-table{width:100%;border-collapse:collapse;color:var(--sp-ink);font-size:13px;text-align:left}
.scdev-sliding-puzzle .sp-leaderboard-table th,.scdev-sliding-puzzle .sp-leaderboard-table td{padding:6px 8px;border-bottom:1px solid var(--sp-line);white-space:nowrap}
.scdev-sliding-puzzle .sp-leaderboard-table th{position:sticky;top:0;background:var(--sp-surface);color:var(--sp-muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px}
.scdev-sliding-puzzle .sp-leaderboard-table td:first-child{width:38px;font-weight:800;color:var(--sp-accent)}
.scdev-sliding-puzzle .sp-leaderboard-table td:nth-child(2){width:100%;white-space:normal;overflow-wrap:anywhere}
.scdev-sliding-puzzle .sp-leaderboard-table tbody tr:nth-child(1){background:#e3b43b1c}
.scdev-sliding-puzzle .sp-leaderboard-table tbody tr:nth-child(2){background:#8195a51c}
.scdev-sliding-puzzle .sp-leaderboard-table tbody tr:nth-child(3){background:#b973451c}
.scdev-sliding-puzzle .sp-leaderboard-note{margin:2px 0;color:var(--sp-muted);font-size:12px}
html.dark-mode .scdev-sliding-puzzle,html.night-mode .scdev-sliding-puzzle,html[data-color-scheme="dark"] .scdev-sliding-puzzle,body:is(.dark-mode,.night-mode,.sheer-dark-mode,.sheer-dark,[data-color-scheme="dark"]) .scdev-sliding-puzzle{--sp-bg:#171c25;--sp-surface:#202734;--sp-ink:#e8edf3;--sp-muted:#b5bfcc;--sp-line:#414b5a;--sp-tile:#398bd7;--sp-tile-ink:#fff;--sp-empty:#303947;--sp-accent:#35a892}
@media(max-width:640px){.scdev-sliding-puzzle{padding:6px}.scdev-sliding-puzzle .sp-shell{padding:8px;border-radius:8px}.scdev-sliding-puzzle .sp-header{display:grid;gap:8px}.scdev-sliding-puzzle .sp-stats{justify-content:stretch}.scdev-sliding-puzzle .sp-stats>div{flex:1;min-width:0}.scdev-sliding-puzzle .sp-toolbar{gap:5px}.scdev-sliding-puzzle .sp-toolbar label{width:100%;margin:0 0 2px}.scdev-sliding-puzzle .sp-toolbar button{flex:1}.scdev-sliding-puzzle .sp-board{width:min(100%,calc(100dvh - 320px));border-width:5px;border-radius:8px}.scdev-sliding-puzzle .sp-tile{border-radius:5px}}
@media(max-height:560px) and (min-width:641px){.scdev-sliding-puzzle .sp-board{width:min(72vw,calc(100dvh - 190px))}}