.difficulty-tabs{display:flex;gap:9px;flex-wrap:wrap;margin:0 0 25px}.difficulty-tabs a{padding:10px 19px;border:1px solid var(--line);border-radius:8px;font-size:14px;background:#fff;font-weight:600}.difficulty-tabs a.is-active{background:var(--purple);border-color:var(--purple);color:#fff}.sudoku-live-space{padding:25px;max-width:560px;margin:auto}.sudoku-live-board{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));border:2px solid #4f465d;background:#fff;max-width:440px;margin:0 auto 22px;user-select:none}.sudoku-row{display:contents}.sudoku-cell{border:0;border-right:1px solid #d6d4db;border-bottom:1px solid #d6d4db;aspect-ratio:1;min-width:0;padding:0;display:grid;place-items:center;background:#fff;color:#78639b;position:relative;font-family:Manrope,system-ui,sans-serif;font-size:clamp(20px,3vw,27px);font-weight:500;cursor:pointer}.sudoku-cell:nth-child(9){border-right:0}.sudoku-row:last-child .sudoku-cell{border-bottom:0}.sudoku-cell.block-right{border-right:2px solid #71667f}.sudoku-cell.block-bottom{border-bottom:2px solid #71667f}.sudoku-cell.is-given{color:#202a36;font-weight:800}.sudoku-cell.is-peer{background:#f4f1f8}.sudoku-cell.is-matching{background:#e6ddee}.sudoku-cell.is-selected{background:#d3bde5;box-shadow:inset 0 0 0 2px #78639b}.sudoku-cell.is-conflict,.sudoku-cell.is-wrong{color:#b33232;background:#fbe8e6}.sudoku-cell:focus-visible{outline:3px solid var(--purple);outline-offset:-3px;z-index:1}.sudoku-cell-notes{display:grid;grid-template-columns:repeat(3,1fr);width:100%;height:100%;padding:3px;align-items:center;justify-items:center;font-size:clamp(8px,1.25vw,12px);line-height:1;color:#78639b;font-weight:500}.sudoku-cell-notes span{display:grid;place-items:center;width:100%;height:100%}.sudoku-number-pad{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:6px;margin:18px 0}.sudoku-number-pad button{padding:9px 0 5px;border:0;border-radius:7px;background:#eeeaf5;color:var(--purple);display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer}.sudoku-number-pad strong{font-size:23px;font-weight:600}.sudoku-number-pad small{font-size:10px}.sudoku-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.sudoku-actions button{border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--muted);font:600 14px 'DM Sans',sans-serif;padding:11px 4px;cursor:pointer}.sudoku-actions button:hover{background:#f6f3fa}.sudoku-actions button.is-active{background:var(--purple);border-color:var(--purple);color:#fff}.sudoku-save-info{display:flex;justify-content:space-between;flex-wrap:wrap;gap:9px;color:var(--muted);font-size:12px;margin:18px 0;line-height:1.5}.sudoku-admin-grid{font:22px/1.65 monospace;letter-spacing:7px;background:var(--paper);padding:20px;border-radius:8px;overflow-x:auto}.admin-divider{border:0;border-top:1px solid var(--line);margin:28px 0}.sudoku-live-space .game-result{background:#eeeaf5}.sudoku-live-space .game-result textarea{width:100%;margin-top:15px;min-height:120px}.sudoku-live-space .game-message{min-height:44px;line-height:1.6;margin:0}.sudoku-live-space .game-result h2{font-size:24px}
@media(max-width:600px){.sudoku-live-space{padding:18px 12px}.sudoku-cell{font-size:23px}.sudoku-cell-notes{font-size:9px;padding:2px}.sudoku-number-pad{gap:4px}.sudoku-number-pad strong{font-size:22px}.sudoku-number-pad button{padding-top:8px}.difficulty-tabs a{flex:1;text-align:center;padding:10px}.sudoku-actions{gap:6px}.sudoku-actions button{font-size:13px;padding:12px 3px}}
.sudoku-control-guide{margin:25px 0;padding:23px;background:#fff;border:1px solid var(--line);border-radius:12px}.sudoku-control-guide h3{font-size:18px;margin:0 0 12px}.sudoku-control-guide p{font-size:14px;color:var(--muted);line-height:1.8;margin:10px 0}.sudoku-control-guide strong{color:var(--ink)}