.game-interface{position:absolute;inset:0;z-index:2;width:100%;height:100%;padding:1.5rem;box-sizing:border-box;flex:1;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;transition:opacity .3s ease;opacity:0;pointer-events:none}.game-interface.visible{opacity:1;pointer-events:all}.game-interface.hidden{display:none}#game-over-overlay.visible~.game-interface{opacity:0;pointer-events:none}.game-actions-row>*,.game-header>*,.icon-btn,.score-box,.settings-btn{pointer-events:auto}.grid-wrapper{flex:1;width:100%;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;min-height:0;padding:10px 0;transition:filter .3s ease,opacity .3s ease}.sudoku-grid{display:grid;margin:auto;aspect-ratio:1/1;height:100%;width:auto;max-width:100%;max-height:100%;background:var(--border-color);gap:1px;border:2px solid var(--border-color);transition:all .2s ease}.game-board:fullscreen .grid-wrapper{height:100vh;width:100vw;padding:2vh}.game-board:fullscreen .sudoku-grid{max-height:90vh;max-width:90vh}.blurred{filter:blur(15px);opacity:.3;pointer-events:none;transition:none}#status-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;z-index:10;cursor:pointer}#status-overlay.hidden{display:none!important;opacity:0}.status-main-text{font-family:var(--font-heading);font-size:5.5rem;font-weight:500;color:var(--text-primary);letter-spacing:-4px;line-height:1;transition:opacity .2s}.status-sub-text{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:1.5rem;font-family:var(--font-body);font-size:1.1rem;color:var(--text-secondary);font-weight:500;text-transform:uppercase;letter-spacing:1px}.status-sub-text svg{width:24px;height:24px;color:var(--text-primary)}.game-board:fullscreen .status-main-text{font-size:8.5rem}.game-board:fullscreen .status-sub-text{font-size:1.5rem;margin-top:2rem}.game-board:fullscreen .status-sub-text svg{width:32px;height:32px}.sudoku-grid[data-size="9"]{grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr)}.sudoku-grid[data-size="9"] .sudoku-tile{font-size:clamp(1rem, 4cqmin, 2rem)}.sudoku-grid[data-size="16"]{grid-template-columns:repeat(16,1fr);grid-template-rows:repeat(16,1fr)}.sudoku-grid[data-size="16"] .sudoku-tile{font-size:clamp(.7rem, 2.5cqmin, 1.2rem)}.sudoku-grid[data-size="25"]{grid-template-columns:repeat(25,1fr);grid-template-rows:repeat(25,1fr)}.sudoku-grid[data-size="25"] .sudoku-tile{font-size:clamp(.5rem, 1.8cqmin, .9rem);padding:0;letter-spacing:-1px}.sudoku-tile{background-color:var(--bg-main);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:500;color:var(--text-primary);cursor:pointer;user-select:none;position:relative;overflow:hidden;z-index:1}.tile-selected::after{content:'';position:absolute;inset:0;box-shadow:inset 0 0 0 2px var(--accent-color);pointer-events:none;z-index:10}.tile-highlight::after{content:'';position:absolute;inset:0;box-shadow:inset 0 0 0 2px var(--accent-color);pointer-events:none;z-index:10;transition:box-shadow .1s ease}.sudoku-grid[data-size="9"] .sudoku-tile:nth-child(3n){border-right:2px solid var(--border-color)}.sudoku-grid[data-size="9"] .sudoku-tile:nth-child(9n){border-right:none}.sudoku-grid[data-size="16"] .sudoku-tile:nth-child(4n){border-right:2px solid var(--border-color)}.sudoku-grid[data-size="16"] .sudoku-tile:nth-child(16n){border-right:none}.sudoku-grid[data-size="25"] .sudoku-tile:nth-child(5n){border-right:2px solid var(--border-color)}.sudoku-grid[data-size="25"] .sudoku-tile:nth-child(25n){border-right:none}.tile-border-bottom{border-bottom:2px solid var(--border-color)!important}.tile-fixed{font-weight:700;color:var(--text-primary);background-color:var(--bg-main)!important}.tile-user{color:var(--accent-color)}.tile-temp{color:var(--text-secondary);font-style:italic}.tile-selected{background-color:var(--accent-glow)!important}.tile-error{background-color:color-mix(in srgb,var(--accent-color-secondary),transparent 80%)!important;color:var(--accent-color-secondary)!important;animation:shake .4s ease-in-out}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-3px)}75%{transform:translateX(3px)}}#hidden-numpad{caret-color:transparent!important;color:transparent!important;background:0 0!important;outline:0!important;border:none!important;box-shadow:none!important}.timer-box{min-width:110px;justify-content:center}.timer-display{font-family:Rubik,sans-serif;font-size:1.8rem;font-weight:500;color:var(--text-primary);letter-spacing:1px;font-variant-numeric:tabular-nums}.score-box{flex-direction:column}#game-timer{line-height:1;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}.lives-display{display:flex;align-items:flex-start;justify-content:center;gap:8px;height:100%;padding-top:5px}.lives-display span{font-size:3.5rem;font-weight:600;line-height:1;color:var(--text-primary)}#lives-container{display:flex;gap:8px;align-items:center}.heart-icon{height:5.5vh;width:auto;min-height:40px;max-height:55px;overflow:visible!important;transition:all .3s;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}.heart-icon.heart-lost .heart-bg{fill:var(--border-color)!important}.heart-icon.heart-lost .heart-overlay{fill:transparent!important}.heart-icon.heart-lost{opacity:.5;transform:scale(.9);filter:none}.game-actions-row{margin-top:auto;margin-bottom:0;transition:none;width:100%}.input-select,select{background-color:var(--bg-main);color:var(--text-primary);border:1px solid var(--border-color);padding:8px;border-radius:var(--radius-md);font-family:var(--font-body);font-size:.95rem;cursor:pointer;outline:0;width:auto;min-width:140px;max-width:200px;text-align:center;text-align-last:center}.input-select:focus,select:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px var(--accent-glow)}.back-btn,.back-btn svg,.icon-btn,.icon-btn svg,.settings-btn,.settings-btn svg{transition:none!important;animation:none!important}.mode-switch-wrapper{display:flex;position:relative;background-color:var(--bg-main);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:4px;margin-bottom:1.5rem}.mode-switch-wrapper input[type=radio]{display:none}.mode-switch-wrapper label{flex:1;text-align:center;padding:10px 0;font-family:var(--font-heading);font-weight:600;font-size:.9rem;color:var(--text-secondary);cursor:pointer;z-index:2;margin:0;transition:color .3s ease;text-transform:uppercase;letter-spacing:1px}.mode-switch-wrapper input:checked+label{color:var(--text-primary)}.mode-slider{position:absolute;top:4px;bottom:4px;width:calc(50% - 4px);background-color:var(--card-bg);border-radius:6px;z-index:1;transition:transform .3s cubic-bezier(.25, .8, .25, 1);box-shadow:0 2px 5px rgba(0,0,0,.1)}.mode-switch-wrapper input[value=sandbox]:checked~.mode-slider{transform:translateX(100%)}.results-view{width:100%;display:flex;flex-direction:column;align-items:center}.results-view.hidden{display:none!important}#game-over-overlay .overlay-content{justify-content:center;gap:1.5rem}.centered-score-item{text-align:center;margin-bottom:3rem}.centered-score-item .res-label{font-size:1.2rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;opacity:.7;display:block;margin-bottom:.8rem}.big-score-container{display:flex;align-items:baseline;justify-content:center;position:relative}#results-ranked .res-value.big,#results-sandbox .res-value.big{font-size:5.5rem;font-weight:700;line-height:1;font-family:var(--font-heading)}.score-unit{font-size:1.4rem;color:var(--accent-color);margin-left:8px;font-family:var(--font-heading);font-weight:500}.distribution-chart-container{position:relative;width:100%;max-width:650px;height:180px;margin:1.5rem 0 2rem 0;border-bottom:2px solid var(--border-color);cursor:crosshair}.curve-svg{width:100%;height:100%;overflow:visible}.axis-label{position:absolute;bottom:-25px;font-family:var(--font-body);font-size:.8rem;color:var(--text-secondary);transition:opacity .3s ease}.axis-label.left{left:0}.axis-label.right{right:0}.hover-line{position:absolute;top:0;bottom:0;width:1px;background:var(--text-primary);transform:translateX(-50%);pointer-events:none;opacity:.3;z-index:3;transition:opacity .2s ease}.chart-tooltip{position:absolute;top:-55px;transform:translateX(-50%);background:var(--card-bg);border:1px solid var(--border-color);padding:6px 12px;border-radius:var(--radius-md);font-family:var(--font-body);font-size:.9rem;color:var(--text-primary);pointer-events:none;white-space:nowrap;z-index:10;box-shadow:var(--shadow-card);text-align:center;line-height:1.4;transition:opacity .2s ease,visibility .2s ease}.chart-tooltip.hidden,.hover-line.hidden{opacity:0!important;visibility:hidden!important}.score-marker{position:absolute;top:0;bottom:0;display:flex;flex-direction:column;align-items:center;transform:translateX(-50%);pointer-events:none;transition:left .5s ease-out}.marker-line{width:2px;height:100%;border-left:2px dashed currentColor}.marker-label{position:absolute;font-family:var(--font-heading);font-size:.8rem;font-weight:700;padding:2px 6px;border-radius:4px;text-transform:uppercase;white-space:nowrap}.marker-current{color:var(--accent-color);z-index:2}.marker-current .marker-label{bottom:100%;margin-bottom:5px;background:var(--bg-main);border:1px solid currentColor}.marker-best{color:var(--text-tertiary);z-index:1;opacity:1}.marker-best .marker-label{top:100%;margin-top:5px;color:var(--text-secondary)}.sandbox-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;margin:1.5rem 0 .5rem 0;width:100%;max-width:600px}.stat-box-small{background:0 0;border:1px solid var(--border-color);padding:12px 20px;border-radius:var(--radius-md);display:flex;flex-direction:column;align-items:center;min-width:120px}.stat-title{font-family:var(--font-heading);font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px;margin-bottom:5px;text-align:center}.stat-value{font-family:var(--font-heading);font-size:1.4rem;font-weight:600;color:var(--text-primary)}#restart-btn{margin-top:1rem}.exit-fs-btn{position:absolute;top:20px;right:20px;background:0 0;border:none;color:var(--text-secondary);cursor:pointer;display:none;padding:8px;z-index:10000;transition:color var(--transition-fast)}.exit-fs-btn svg{width:32px;height:32px}.exit-fs-btn:hover{color:var(--accent-color-secondary)}.game-board:fullscreen .exit-fs-btn{display:block}.ios-fullscreen .exit-fs-btn{display:block!important}.game-page .main-content{display:flex;flex-direction:column}.game-board{flex:1 0 auto;display:flex;flex-direction:column;min-height:600px;margin-bottom:0!important}#game-over-overlay{overflow-y:auto}#game-over-overlay .overlay-content{height:auto;min-height:100%;padding:4rem 0}@media (max-width:600px){.game-interface{padding-bottom:3rem}.timer-display{font-size:1.4rem}.score-box{min-width:70px}.status-main-text{font-size:4rem}.status-sub-text{font-size:.9rem;flex-wrap:wrap}#results-ranked .res-value.big,#results-sandbox .res-value.big{font-size:4.5rem}.distribution-chart-container{height:140px;margin-top:1.5rem;margin-bottom:2.5rem}.sandbox-stats{gap:.5rem;margin:1.5rem 0 1rem 0;flex-direction:column;align-items:center}.stat-box-small{padding:10px;min-width:100px}.stat-value{font-size:1.2rem}#restart-btn{margin-top:1rem}.game-interface{padding:.5rem}body.game-page{overscroll-behavior:none}#settings-panel{touch-action:auto;overscroll-behavior:contain}.game-page .main-content{display:flex!important;flex-direction:column!important;justify-content:flex-start!important;height:auto!important;min-height:calc(100svh - 80px)!important;padding-top:80px!important;padding-bottom:0!important;padding-left:0!important;padding-right:0!important}.game-board{flex:1 1 100%!important;display:flex!important;flex-direction:column!important;height:auto!important;min-height:calc(100svh - 80px)!important;max-height:none!important;margin:0!important;border-radius:0}#game-over-overlay{overflow-y:auto!important}#game-over-overlay .overlay-content{height:auto!important;min-height:100%!important;padding:4rem 0 3rem 0!important;justify-content:center!important;gap:2.5rem!important}body.game-page:has(.game-board:focus-within) #footer-placeholder,body.game-page:has(.game-board:focus-within) footer{display:none!important}.game-board:focus-within{flex:1 1 100%!important;height:auto!important;min-height:250px!important;max-height:none!important}.game-board:focus-within .grid-wrapper{overflow-y:auto!important;align-items:flex-start!important}.game-board:focus-within .sudoku-grid{width:100%!important;height:auto!important;max-height:none!important;aspect-ratio:1/1!important}.game-page .game-board:fullscreen .game-interface,.ios-fullscreen .game-interface{padding-top:1.5rem!important;padding-bottom:1rem!important}.game-board:fullscreen .grid-wrapper{width:100%!important;height:auto!important;max-width:100%!important;max-height:100%!important;padding:10px 0!important}}.game-board:fullscreen{width:100vw!important;height:100vh!important;max-width:none!important;max-height:none!important;border-radius:0!important;border:none!important;background-color:var(--bg-main);display:flex!important;flex-direction:column!important}.ios-fullscreen{position:fixed!important;inset:0!important;width:100vw!important;height:100dvh!important;max-width:none!important;max-height:none!important;z-index:9999!important;border-radius:0!important;border:none!important;background-color:var(--bg-main)!important;display:flex!important;flex-direction:column!important}.ios-fullscreen .exit-fs-btn{display:block!important}.game-board:fullscreen .exit-fs-btn{display:block!important}#new-record-msg,.new-record{color:var(--record-color,#ffa914)!important}.new-record svg{color:var(--record-color,#ffa914)!important}