.arrow-theme{background:radial-gradient(circle at top left,#272b67 0,#0a1021 46%,#020617 100%)}
.game-callouts{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.tool-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.tool-row.stack .btn{flex:1}.gameplay-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}.play-surface{padding:20px}.play-top{display:flex;justify-content:space-between;gap:18px;align-items:start;flex-wrap:wrap}.level-meta{display:flex;gap:10px;flex-wrap:wrap}.board-wrap{padding-top:18px}
.puzzle-board{width:100%;max-width:min(82vh,760px);aspect-ratio:1/1;display:block;margin:0 auto;background:linear-gradient(180deg,rgba(12,18,36,.96),rgba(2,6,23,.98));border-radius:30px;border:1px solid rgba(255,255,255,.08);box-shadow:inset 0 0 0 1px rgba(255,255,255,.03),0 18px 42px rgba(2,6,23,.38);touch-action:manipulation;overscroll-behavior:contain}
.board-backdrop{fill:rgba(255,255,255,.015);stroke:rgba(255,255,255,.05);stroke-width:2}.board-grid line{stroke:rgba(148,163,184,.16);stroke-width:1}
.arrow-piece{cursor:pointer;transition:opacity .18s ease,transform .18s ease,filter .18s ease;transform-origin:center}.arrow-piece .halo{fill:none;stroke-width:28;stroke-linecap:round;stroke-linejoin:round;opacity:.14}.arrow-piece .body{fill:none;stroke-width:18;stroke-linecap:round;stroke-linejoin:round}.arrow-piece .head{stroke:none}.arrow-piece.available .body,.arrow-piece.available .head{filter:drop-shadow(0 0 8px color-mix(in srgb, var(--arrow-glow) 55%, white 45%))}.arrow-piece.available .halo{opacity:.22}.arrow-piece.blocked{opacity:.88}.arrow-piece.blocked .halo{opacity:.08}.arrow-piece.hint .body,.arrow-piece.hint .head{filter:drop-shadow(0 0 12px rgba(253,224,71,.92))}.arrow-piece.hint .halo{stroke:#fde047;opacity:.28}.arrow-piece.removing{opacity:.18}.arrow-piece.blocked-flash{opacity:.42}
.level-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:620px;overflow:auto;padding-right:4px}.level-pill{border-radius:14px;padding:12px 10px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);text-align:left;box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}.level-pill small{color:var(--muted)}.level-pill.locked{opacity:.45}.level-pill.current{border-color:#93c5fd;box-shadow:0 0 0 2px rgba(147,197,253,.18)}.legend{display:grid;gap:10px}.notice.small{font-size:.92rem}
@media (max-width:980px){.gameplay-layout{grid-template-columns:1fr}}
@media (max-width:720px){.play-surface{padding:14px}.level-list{grid-template-columns:repeat(2,minmax(0,1fr));max-height:none}.tool-row.stack .btn{flex:1 1 calc(50% - 8px)}}
@media (orientation:landscape) and (max-width:980px){.gameplay-layout{grid-template-columns:minmax(0,1fr) 280px}}