.chess-container{width:100%;height:100%;padding:1.5rem;flex:1;display:flex;flex-direction:column;justify-content:space-between;align-items:center;position:relative;z-index:2;transition:opacity .3s ease}#game-over-overlay.visible~.chess-container{opacity:0;pointer-events:none}.hint-pause{display:none}.back-btn,.back-btn svg,.icon-btn,.icon-btn svg,.settings-btn,.settings-btn svg{transition:none!important;animation:none!important}#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}.blurred{filter:blur(10px);opacity:.3;pointer-events:none}.grid-wrapper{margin:auto 0;width:100%;display:flex;flex-direction:row;align-items:center;justify-content:center;position:relative;max-height:100%;min-height:0;gap:2rem}@media (max-width:700px){.grid-wrapper{gap:2px;flex-wrap:wrap}}.grid-wrapper.hidden{visibility:hidden;opacity:0;pointer-events:none}.chess-board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);margin:0;width:100%;height:auto;max-width:450px;aspect-ratio:1/1;border-radius:var(--radius-lg,12px);overflow:hidden;background-color:var(--bg-main);border:2px solid var(--border-color);box-shadow:0 16px 40px rgba(0,0,0,.15),0 6px 15px rgba(0,0,0,.1),inset 0 0 0 1px rgba(255,255,255,.1)}.game-board:fullscreen .chess-board,.ios-fullscreen .chess-board{max-width:none;height:60vh;width:60vh;max-height:80vw;max-width:80vw}.chess-square{width:100%;height:100%;display:flex;align-items:center;justify-content:center;cursor:pointer;user-select:none;transition:background-color .1s ease,box-shadow .1s ease}@media (max-width:700px){.chess-square{font-size:1.5rem}}.square-light{background-color:rgba(255,255,255,.85);color:var(--text-primary)}.square-dark{background-color:color-mix(in srgb,var(--accent-color) 90%,var(--bg-main));color:var(--text-primary)}html.theme-lvl-1 .square-light{background-color:#fff}html.theme-lvl-2 .square-light{background-color:#fafafa}.chess-square:hover{opacity:.8}.chess-square.selected{box-shadow:inset 0 0 0 3px var(--accent-color)}.chess-piece{width:95%;height:95%;display:flex;align-items:center;justify-content:center}.chess-piece svg{width:100%;height:100%;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.chess-piece.white{color:var(--text-primary)}.chess-piece.black{color:var(--accent-color)}.piece-palette{display:flex;flex-direction:column;align-items:center;gap:.5rem;background:0 0;padding:0;border-radius:0;border:none;align-self:stretch}.piece-palette.hidden{display:none!important}.palette-row{display:flex;flex-direction:column;justify-content:space-between;flex-grow:1;width:100%}.palette-btn{width:60px;aspect-ratio:1/1;background:var(--bg-main);border:2px solid var(--border-color);border-radius:4px;font-size:1.5rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;font-family:var(--font-heading)}.palette-btn.black-piece,.palette-btn.white-piece{background-color:rgba(255,255,255,.85)}.palette-btn.white-piece{color:var(--text-primary)}.palette-btn.black-piece{color:var(--accent-color)}html.theme-lvl-1 .palette-btn.black-piece,html.theme-lvl-1 .palette-btn.white-piece{background-color:#fff}html.theme-lvl-2 .palette-btn.black-piece,html.theme-lvl-2 .palette-btn.white-piece{background-color:#fafafa}.palette-btn svg{width:48px;height:48px;pointer-events:none}.palette-btn:hover{border-color:var(--text-secondary);transform:scale(1.05)}.palette-btn.selected{border-color:var(--accent-color);background:var(--accent-glow)}.flash-success-grid{animation:flashSuccessShadow .8s ease-out}.flash-failure-grid{animation:flashRedShadow .8s ease-out}@keyframes flashSuccessShadow{0%{box-shadow:0 0 0 0 transparent}10%{box-shadow:0 0 60px 20px var(--accent-glow)}100%{box-shadow:0 0 0 0 transparent}}@keyframes flashRedShadow{0%{box-shadow:0 0 0 0 transparent}10%{box-shadow:0 0 60px 20px var(--accent-color-secondary)}100%{box-shadow:0 0 0 0 transparent}}.score-box{flex-direction:column;width:72px;height:72px;min-width:unset;padding:0;display:flex;justify-content:center;align-items:center}.label-small{font-size:.75rem;text-transform:uppercase;color:var(--text-secondary);font-weight:700}.stat-box{font-family:var(--font-heading);color:var(--text-primary);font-size:1.8rem;font-weight:500;line-height:1}.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{width:100%;display:flex;align-items:center;justify-content:space-between;margin-bottom:0}.btn-paused-pending{opacity:.5;animation:pulse-pause 2s infinite;border-color:var(--accent-color)!important;color:var(--accent-color)!important}.btn-paused-active{opacity:1;animation:pulse-pause 1s infinite;border-color:var(--accent-color)!important;color:var(--accent-color)!important;background:var(--bg-main)}@keyframes pulse-pause{0%{transform:scale(1)}50%{transform:scale(.95)}100%{transform:scale(1)}}#validate-btn{height:72px;padding-top:0;padding-bottom:0;display:flex;align-items:center;justify-content:center}.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%)}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:1rem;cursor:pointer;outline:0;width:auto}select:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px var(--accent-glow)}.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:4.5rem;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)}.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 2rem 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}.stat-value{font-family:var(--font-heading);font-size:1.4rem;font-weight:600;color:var(--text-primary)}.history-chart{display:flex;align-items:stretch;justify-content:center;gap:16px;height:120px;width:max-content;max-width:100%;margin:0 auto;padding:0 60px;border-bottom:2px solid var(--border-color);overflow-x:auto;scrollbar-width:none}.history-chart::-webkit-scrollbar{display:none}.history-bar-wrapper{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;position:relative;flex-shrink:1}.history-bar{width:45px;background-color:var(--accent-color);opacity:.8;border-radius:6px 6px 0 0;position:relative;transition:none!important}.bar-label{font-size:.85rem;font-family:var(--font-body);color:var(--text-primary);margin-bottom:6px;font-weight:600}.bar-index{position:absolute;top:100%;margin-top:6px;font-size:.8rem;font-family:var(--font-heading);color:var(--text-secondary)}#restart-btn{margin-top:2rem}.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 .overlay-content{height:auto;min-height:100%;padding:4rem 0}@media (max-width:900px){.status-main-text{font-size:5rem}}@media (max-width:700px){.piece-palette{flex-direction:row;width:100%;justify-content:center}.palette-row{flex-direction:row}.palette-btn{width:45px}.palette-btn svg{width:36px;height:36px}.chess-board{width:92%;margin:0 auto}.score-box{width:60px!important;height:60px!important;min-width:unset!important;padding:0!important}.chess-container{padding:1.5rem;padding-bottom:2rem}.status-main-text{font-size:4rem}.status-sub-text{font-size:.9rem;flex-wrap:wrap}.stat-box{font-size:1.5rem}#results-ranked .res-value.big,#results-sandbox .res-value.big{font-size:3.5rem}.score-unit{font-size:1.2rem}.distribution-chart-container{height:140px;margin-top:1.5rem;margin-bottom:2.5rem}.sandbox-stats{gap:.5rem;margin:1.5rem 0 2rem 0;flex-direction:column;align-items:center}.stat-box-small{padding:10px;min-width:100px}.stat-value{font-size:1.2rem}.history-chart{gap:8px;height:100px;padding:0 40px}.history-bar{width:35px}.bar-label{font-size:.75rem}#validate-btn{height:60px!important}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}.game-page .game-board:fullscreen .chess-container,.ios-fullscreen .chess-container{padding-top:3rem!important;padding-bottom:2rem!important}.game-board:fullscreen .chess-board,.ios-fullscreen .chess-board{width:100%!important;max-width:none!important;height:auto!important;max-height:none!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}.ios-fullscreen~* #icon-expand{display:none!important}.ios-fullscreen~* #icon-compress{display:block!important}#new-record-msg,.new-record{color:var(--record-color,#ffa914)!important}.new-record svg{color:var(--record-color,#ffa914)!important}.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}