:root{color:#5a3d46;font-synthesis:none;text-rendering:optimizelegibility;--cream:#fff8f4;--paper:#fffdfb;--blush-soft:#fdecef;--blush:#f7d4da;--rose-soft:#efbcc6;--rose:#cf7889;--rose-dark:#ad5c6c;--peach:#f4c5aa;--cocoa:#5a3d46;--muted:#91747c;--line:#c9939e;--danger:#c74459;background:#fff8f4;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:var(--cream)}body{background:radial-gradient(circle at 8% 4%,#f7d4dab8,#0000 24rem),radial-gradient(circle at 96% 10%,#f4c5aa75,#0000 22rem),radial-gradient(circle at 82% 88%,#efbcc64d,#0000 28rem),linear-gradient(145deg,#fffaf6 0%,#fff5f2 48%,#fff9f6 100%);min-width:320px;min-height:100vh;margin:0}body:before,body:after{content:"♥";pointer-events:none;z-index:-1;color:#cf788914;font-size:clamp(9rem,22vw,18rem);line-height:1;position:fixed}body:before{bottom:-4rem;left:-3rem;transform:rotate(-12deg)}body:after{top:4rem;right:-2rem;transform:rotate(12deg)}button{font:inherit}button:focus-visible{outline-offset:3px;outline:3px solid #cf788957}.loading-screen{min-height:100vh;color:var(--cocoa);align-content:center;place-items:center;gap:10px;font-weight:750;display:grid}.loading-heart{color:var(--rose);font-size:2.4rem;animation:1.2s ease-in-out infinite softPulse}@keyframes softPulse{50%{opacity:.72;transform:scale(1.12)}}.app-shell{grid-template-columns:minmax(0,690px) 286px;align-items:start;gap:24px;width:min(1120px,100%);margin:0 auto;padding:30px;display:grid}.game-card,.info-card{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffdfbf0;border:1px solid #c9939e4d;border-radius:28px;box-shadow:0 22px 60px #6f454f1a}.game-card{padding:28px}.info-card{padding:23px;position:sticky;top:24px}.topbar{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:19px;display:flex}.brand-lockup{min-width:0}.eyebrow,.info-kicker{color:var(--rose-dark);letter-spacing:.14em;margin:0 0 5px;font-size:.7rem;font-weight:850}h1{flex-wrap:wrap;align-items:baseline;gap:8px 12px;margin:0;line-height:.94;display:flex}.brand-love{color:var(--rose-dark);letter-spacing:-.035em;font-family:Georgia,Times New Roman,serif;font-size:clamp(2rem,5vw,3.05rem);font-weight:800}.brand-sudoku{color:var(--cocoa);letter-spacing:.13em;font-size:clamp(1.05rem,2.6vw,1.45rem);font-weight:900}.brand-subtitle{max-width:480px;color:var(--muted);margin:10px 0 0;font-size:.88rem;line-height:1.45}h2{color:var(--cocoa);margin:0 0 8px}.ghost-button,.action,.difficulty,.new-puzzle-button,.win-panel button{cursor:pointer;border:0;font-weight:780;transition:transform .12s,background .12s,box-shadow .12s}.ghost-button{color:#936673;background:#fff2f2;border-radius:999px;flex:none;padding:10px 13px;box-shadow:inset 0 0 0 1px #c9939e3d}.ghost-button:hover{background:#fde8eb}.difficulty-row{grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:10px;display:grid}.difficulty{color:#8a6871;background:#f9eceb;border-radius:13px;padding:10px 8px}.difficulty:hover:not(:disabled){background:#f6dfe2;transform:translateY(-1px)}.difficulty.active{color:#fffaf8;background:linear-gradient(135deg,#d88494,#c66f81);box-shadow:0 7px 16px #be637538}.difficulty:disabled{cursor:progress;opacity:.6}.new-puzzle-button{color:#8b5360;background:linear-gradient(135deg,#fff1ef,#fde6e8);border-radius:14px;justify-content:center;align-items:center;gap:8px;width:100%;margin:0 0 12px;padding:11px 14px;display:flex;box-shadow:inset 0 0 0 1px #c9939e4d}.new-puzzle-button span{color:var(--rose);font-size:1.05rem}.new-puzzle-button:hover:not(:disabled){background:#fbdde2;transform:translateY(-1px)}.new-puzzle-button:disabled{opacity:.62;cursor:progress}.game-meta{color:#8a6972;justify-content:space-between;gap:10px;margin:12px 2px;font-size:.92rem;display:flex}.game-meta strong{color:var(--rose-dark)}.board{aspect-ratio:1;touch-action:manipulation;background:#b98c96;border:3px solid #6b4a53;border-radius:12px;grid-template-columns:repeat(9,1fr);gap:1px;width:min(100%,570px);margin:0 auto;display:grid;overflow:hidden;box-shadow:0 12px 30px #69434c1f}.cell{color:#c16678;cursor:pointer;-webkit-user-select:none;user-select:none;background:#fffdfb;border:0;place-items:center;min-width:0;min-height:0;padding:0;transition:background 90ms,box-shadow 90ms;display:grid;position:relative}.cell.box-right{border-right:2px solid #6b4a53}.cell.box-bottom{border-bottom:2px solid #6b4a53}.cell.related{background:#fff1f1}.cell.same-number{background:#f9dfe3}.cell.selected{z-index:2;background:#f3c9d0;box-shadow:inset 0 0 0 3px #c56e80}.cell.given .cell-value{color:#563a43;font-weight:850}.cell.wrong .cell-value{color:var(--danger)}.cell-value{font-size:clamp(1.1rem,5.3vw,2.05rem);font-weight:700}.notes-grid{color:#9b7881;grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);width:100%;height:100%;font-size:clamp(.48rem,1.8vw,.78rem);line-height:1;display:grid}.notes-grid span{place-items:center;display:grid}.action-row{grid-template-columns:repeat(3,1fr);gap:9px;width:min(100%,570px);margin:18px auto 10px;display:grid}.action{color:#7a5d65;background:#f9eceb;border-radius:13px;padding:11px 8px}.action:hover{background:#f5dfe2}.action.active{color:#a65365;background:#f7d6dc;box-shadow:inset 0 0 0 1px #c260742e}.number-pad{grid-template-columns:repeat(9,1fr);gap:6px;width:min(100%,570px);margin:0 auto;display:grid}.number-pad button{aspect-ratio:1/1.05;color:#fffaf8;cursor:pointer;background:linear-gradient(160deg,#d88595,#c76d80);border:0;border-radius:11px;font-size:clamp(1rem,4vw,1.35rem);font-weight:850;box-shadow:0 5px 12px #b2526729}.number-pad button:hover{filter:brightness(1.025);transform:translateY(-1px)}.number-pad button:active{transform:translateY(1px)}.win-panel{color:#8f5160;background:linear-gradient(135deg,#fff0ef,#fde6e9);border:1px solid #c9939e3d;border-radius:18px;gap:7px;width:min(100%,570px);margin:16px auto 0;padding:17px;display:grid}.win-panel button{background:var(--rose);color:#fff;border-radius:12px;margin-top:5px;padding:10px}.status-message{width:min(100%,570px);min-height:1.4em;color:var(--muted);text-align:center;margin:11px auto 0;font-size:.86rem}.info-kicker{margin-bottom:4px}.info-card p{color:#81656d;line-height:1.58}.info-card dl{gap:8px;margin:20px 0;display:grid}.info-card dl div{border-bottom:1px solid #f1dfe0;justify-content:space-between;padding-bottom:8px;display:flex}.info-card dt{color:#987a82}.info-card dd{color:var(--cocoa);margin:0;font-weight:850}.small-note{font-size:.82rem}@media (width<=860px){.app-shell{grid-template-columns:1fr;padding:16px}.info-card{position:static}}@media (width<=540px){body{background:radial-gradient(circle at 10% 0,#f7d4da8f,#0000 18rem),linear-gradient(#fffaf7 0%,#fff7f4 100%)}body:before,body:after{display:none}.app-shell{padding:0}.game-card,.info-card{box-shadow:none;border-left:0;border-right:0;border-radius:0}.game-card{min-height:100vh;padding:18px 12px 20px}.topbar{gap:10px;margin-bottom:14px}.brand-subtitle{max-width:270px;font-size:.78rem}.ghost-button{padding:8px 10px;font-size:.72rem}.difficulty{padding:9px 4px;font-size:.82rem}.new-puzzle-button{font-size:.88rem}.game-meta{font-size:.8rem}.board{border-radius:7px}.number-pad{gap:4px}.number-pad button{border-radius:8px}}