/* Device-local themes preserve the studio mark and branded splash. */
body[data-theme="classic"]{color-scheme:light;--muted:#876787;--mint:#a33c86;--pink:#d24b84;--yellow:#96651e;--surface:#ffe5d7;background-color:#fff1db}
body[data-theme="classic"] .brand{font-family:"Trebuchet MS",sans-serif;letter-spacing:-1.8px}
body[data-theme="classic"] .board{border:5px solid #b17caa;border-radius:23px;box-shadow:0 8px 0 #d5aabe,0 17px 30px #b2686c22}
body[data-theme="classic"] .cell{border-radius:7px}
body[data-theme="classic"] .cell.filled,body[data-theme="classic"] .piece-cell{box-shadow:inset 0 3px 0 #ffffff65,inset 0 -4px 0 #00000021;border-radius:6px}
body[data-theme="classic"] .piece-slot{border-radius:18px}
body[data-theme="classic"] .primary-button{border-radius:20px}
body[data-theme="classic"] .classic-preview{background:#fff1db;border:1px solid #d5aabe}
:root{--page:#fff1db;--ink:#432349;--board-top:#8c4f91;--board-bottom:#68316f;--cell:#54295e;--edge:#ba7cad;--panel:#fff9ee;--tile-0:#f773a1;--tile-1:#ffd052;--tile-2:#a97bf5;--tile-3:#fa8e4f;--tile-4:#67d3ae;--tile-5:#e6a2df;--glow-a:#ffd19c66;--glow-b:#f8b9d366;--button-ink:#ffffff}
body[data-theme="ocean"]{--page:#061e2b;--ink:#f0fbff;--muted:#a0c4d4;--mint:#57e5d9;--yellow:#a4e9ff;--panel:#103241;--surface:#103241;--board-top:#164455;--board-bottom:#0c3546;--cell:#082531;--edge:#377286;--tile-0:#57e5d9;--tile-1:#80c9ff;--tile-2:#c4b0ff;--tile-3:#6b9dff;--tile-4:#a4e9ff;--tile-5:#f2ce76;--glow-a:#0b647855;--glow-b:#123c6866}
body[data-theme="sunset"]{--page:#29152b;--ink:#fff5f4;--muted:#d9b4c8;--mint:#ffbd86;--yellow:#ffe18b;--panel:#40203b;--surface:#40203b;--board-top:#603149;--board-bottom:#45233c;--cell:#321b31;--edge:#92566e;--tile-0:#ffbd86;--tile-1:#ffe18b;--tile-2:#ff8fa4;--tile-3:#cf9fff;--tile-4:#9bcff3;--tile-5:#ff9b71;--glow-a:#8c363e55;--glow-b:#60235766;--button-ink:#412116}
body[data-theme="daylight"]{color-scheme:light;--page:#edf3ff;--ink:#172b4c;--muted:#4c6383;--mint:#176a68;--yellow:#78511c;--panel:#ffffff;--surface:#e5ecf9;--board-top:#b9cdeb;--board-bottom:#ccdaf0;--cell:#eaf0fb;--edge:#94abc9;--tile-0:#54bca7;--tile-1:#efba55;--tile-2:#e979a2;--tile-3:#8d88e4;--tile-4:#65afe0;--tile-5:#ed985c;--glow-a:#c7e5ff88;--glow-b:#d9ddff66;--button-ink:#ffffff}
body{color:var(--ink);background:radial-gradient(ellipse at 8% 35%,var(--glow-a),transparent 42%),radial-gradient(ellipse at 96% 78%,var(--glow-b),transparent 45%),var(--page)}
.board{background:linear-gradient(155deg,var(--board-top),var(--board-bottom));border-color:var(--edge)}
.cell{background:var(--cell)}.cell.preview{background:color-mix(in srgb,var(--tile) 42%,var(--cell))}.cell.preview.invalid{background:#874755}
.piece-slot{background:color-mix(in srgb,var(--panel) 86%,transparent);border-color:color-mix(in srgb,var(--edge) 60%,transparent)}
.piece-slot:hover:not(:disabled){background:var(--surface);border-color:var(--edge)}
.piece-slot.selected{background:color-mix(in srgb,var(--piece-color) 9%,var(--panel));border-color:var(--piece-color)}
.piece-slot.empty{background:color-mix(in srgb,var(--panel) 40%,transparent);border-color:color-mix(in srgb,var(--edge) 22%,transparent)}
.piece-slot.empty::after,.piece-key,.device-label,.instruction,.calm-note,.page-footer,.studio-credit,.tray-heading,.tray-heading span:last-child{color:var(--muted)}
.instruction.error{color:#eb607d}.text-button,.icon-button{color:var(--ink)}.icon-button{border-color:color-mix(in srgb,var(--edge) 45%,transparent)}.icon-button:hover{color:var(--mint);background:color-mix(in srgb,var(--mint) 10%,transparent)}
dialog{background:var(--panel);color:var(--ink);border-color:var(--edge)}
.rules p,.keyboard-note,.dialog-copy,.secondary-button,.legal-credit,.legal-credit strong{color:var(--muted)}
.scoring-note,.end-score{background:color-mix(in srgb,var(--cell) 80%,transparent)}
.primary-button{background:var(--mint);color:var(--button-ink);box-shadow:0 3px 0 color-mix(in srgb,var(--mint) 64%,#000)}
.primary-button:disabled{opacity:.6}.loading-screen{color:#f5f6fd;--mint:#7be0c7;--yellow:#ffd16e;--pink:#fa87aa;--muted:#a0a9c1}
.studio-credit,.legal-credit{font-size:.75rem}.topbar{margin-bottom:18px}
[hidden]{display:none!important}
.game-toolbar{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:8px;margin-bottom:13px}
.toolbar-button{display:flex;justify-content:center;align-items:center;gap:6px;min-height:44px;padding:8px 10px;background:var(--panel);border:1px solid color-mix(in srgb,var(--edge) 58%,transparent);border-radius:12px;font-size:.875rem;font-weight:650}
.toolbar-button:hover{border-color:var(--mint)}.toolbar-button svg{width:17px;height:17px}
.ranked-bar{display:flex;gap:12px;justify-content:space-between;align-items:center;min-height:24px;margin:0 5px 12px;color:var(--muted);font-size:.75rem;line-height:1.4}
#play-mode{color:var(--mint);font-weight:700}.theme-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.theme-option{position:relative;min-width:0;text-align:left;padding:10px 10px 13px;border:1px solid var(--edge);border-radius:14px;background:var(--page)}
.theme-option[aria-pressed="true"]{outline:2px solid var(--mint);outline-offset:2px}.theme-option strong{display:block;font-size:1rem;margin-top:10px}.theme-option small{display:block;font-size:.75rem;color:var(--muted);margin-top:4px;line-height:1.4}
.theme-check{display:none;position:absolute;right:9px;top:9px;border-radius:50%;background:var(--mint);color:var(--button-ink);width:23px;height:23px;text-align:center;font-size:14px;line-height:23px}.theme-option[aria-pressed="true"] .theme-check{display:block}
.theme-preview{display:flex;align-items:center;justify-content:center;gap:5px;height:65px;border-radius:8px;background:#111629}
.theme-preview i{width:23px;height:23px;border-radius:4px;background:#7be0c7;box-shadow:inset 0 2px 0 #fff5,inset 0 -3px 0 #0002;transform:rotate(-7deg)}.theme-preview i:nth-child(2){background:#ffd16e;transform:translateY(-5px) rotate(6deg)}.theme-preview i:nth-child(3){background:#fa87aa}
.ocean-preview{background:#061e2b}.ocean-preview i{background:#57e5d9}.ocean-preview i:nth-child(2){background:#80c9ff}.ocean-preview i:nth-child(3){background:#c4b0ff}
.sunset-preview{background:#29152b}.sunset-preview i{background:#ffbd86}.sunset-preview i:nth-child(2){background:#ffe18b}.sunset-preview i:nth-child(3){background:#ff8fa4}
.daylight-preview{background:#eaf0fb}.daylight-preview i{background:#54bca7}.daylight-preview i:nth-child(2){background:#efba55}.daylight-preview i:nth-child(3){background:#e979a2}
.theme-note{margin-top:20px}.auth-link{display:block;text-align:center;text-decoration:none;margin-top:20px}.secondary-button.auth-link{margin-top:12px}
.privacy-note{font-size:.8125rem;color:var(--muted);line-height:1.6;margin:14px 0 20px}#profile-form label{display:block;font-size:.875rem;font-weight:650;margin-bottom:8px}#nickname{display:block;width:100%;font:inherit;font-size:1rem;color:var(--ink);background:var(--page);border:1px solid var(--edge);border-radius:10px;padding:13px;min-height:46px}#nickname:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
.form-status{font-size:.875rem;line-height:1.5;color:var(--mint);margin:14px 0 0}.form-status:empty{display:none}
#leaderboard-content{margin:20px 0;min-height:100px}.leaderboard-empty{padding:25px 8px;text-align:center;color:var(--muted);font-size:1rem;line-height:1.6}
.leaderboard-list{list-style:none;margin:0;padding:0}.leaderboard-row{display:grid;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:10px;padding:13px 8px;border-bottom:1px solid color-mix(in srgb,var(--edge) 30%,transparent);font-size:.9375rem}.leaderboard-rank{color:var(--muted);font-variant-numeric:tabular-nums}.leaderboard-row:first-child .leaderboard-rank{color:var(--yellow);font-weight:800}.leaderboard-name{overflow-wrap:anywhere}.leaderboard-row strong{font-variant-numeric:tabular-nums;color:var(--mint)}.leaderboard-row.is-you{border-radius:9px;background:color-mix(in srgb,var(--mint) 9%,transparent)}.your-rank{border:1px solid var(--edge);border-radius:10px;padding:12px;font-size:.875rem;line-height:1.5;color:var(--mint)}
@media(max-width:520px){.app{padding-top:max(14px,env(safe-area-inset-top))}.topbar{margin-bottom:14px}.game-toolbar{gap:6px}.toolbar-button{padding:8px 5px}.ranked-bar{margin-bottom:8px}.page-footer{padding-top:18px}}
@media(max-width:360px){.toolbar-button{gap:4px;font-size:.875rem}.toolbar-button svg{display:none}.theme-options{gap:10px}.theme-option{padding:8px}.theme-preview i{width:19px;height:19px}}