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12px}.layout.sidebar-open{grid-template-columns:1fr;gap:12px}.game-column{min-width:0}.toolbar{justify-content:center;flex-wrap:wrap}.sidebar-wrap.open,.settings-panel{width:100%}.settings-panel{max-height:none}}@media(max-width:760px){:root{--board-size: min(92vw, 430px);--board-shell-size: calc(var(--board-size) + 24px)}.app-header h1{font-size:22px}nav{gap:6px}.game-title{font-size:22px}body[data-theme=kids] .game-title{font-size:28px}.time-value{font-size:20px}.toolbar-inline{gap:10px}.toolbar{gap:16px}.tool-icon{width:42px;height:42px;font-size:18px}body[data-theme=kids] .tool-icon{width:48px;height:48px}.number-pad,.number-pad.size-9{flex-wrap:wrap;gap:6px;justify-content:center}.pad-number,body[data-theme=kids] .pad-number{width:44px;height:44px;font-size:17px;transform:none;box-shadow:0 2px 4px #0000000f}body[data-theme=kids] .pad-number{width:48px;height:48px;font-size:20px}body[data-theme=kids] .pad-number[data-digit]{transform:none;box-shadow:0 2px 4px #0000000f}.kids-decorations .deco{font-size:24px}}@media(max-width:430px){:root{--board-size: min( calc(100vw - 40px) , 370px);--board-shell-size: calc(var(--board-size) + 14px)}.app-shell{padding:0 8px 10px}.app-header{height:40px;margin-bottom:4px}.app-header h1{font-size:20px}nav{gap:4px}nav a{font-size:12px}.game-header{width:100%}.game-header-top{flex-wrap:wrap;gap:4px}.toolbar-inline{gap:8px}.tool-icon,body[data-theme=kids] .tool-icon,body[data-theme=kids] .tool-hint .tool-icon,body[data-theme=kids] .tool-undo .tool-icon,body[data-theme=kids] .tool-erase .tool-icon,body[data-theme=kids] .tool-notes .tool-icon{width:36px;height:36px;font-size:15px;transform:none;box-shadow:0 2px 4px #0000000f}.tool-label{font-size:10px}.game-time{font-size:12px}.time-value{font-size:16px}.settings-btn{width:32px;height:32px;font-size:16px}.board-shell{width:min(100%,var(--board-shell-size));height:auto;aspect-ratio:1 / 1;padding:7px;border-radius:14px;margin:0 auto}body[data-theme=kids] .board-shell{border-radius:18px;padding:8px}.sudoku-board{width:100%;height:100%}.cell{border-radius:6px;font-size:clamp(1.1rem,5vw,1.45rem)}body[data-theme=kids] .cell{border-radius:7px}.number-pad-section{width:100%;max-width:var(--board-size)}.number-pad,.number-pad.size-9{display:flex;flex-wrap:nowrap;gap:4px;justify-content:center}.pad-number,body[data-theme=kids] .pad-number,body[data-theme=kids] .pad-number[data-digit]{width:34px;min-width:0;height:34px;font-size:14px;flex:0 1 34px;transform:none;box-shadow:0 2px 4px #0000000f}.solve-controls{width:auto}.solve-btn{height:36px;padding:0 14px;font-size:13px}.kids-decorations .deco{font-size:20px}}@media(max-height:860px)and (min-width:761px){.app-header{height:42px;margin-bottom:4px}.game-column{gap:8px}.board-shell{width:556px;height:556px;padding:12px}.sudoku-board{width:532px;height:532px}.number-pad-section,.toolbar-section{width:532px}.pad-number{width:46px;height:46px;font-size:18px}.tool-icon{width:42px;height:42px;font-size:18px}}@media print{.app-header,.toolbar-section,.number-pad-section,.settings-panel,.storage-notice,.status-row{display:none!important}.app-shell{max-width:none;padding:0}}