:root{--bg: #ffffff;--fg: #000000;--border: #000000;--cell-bg: #ffffff;--cell-active: #dddddd;--cell-found: #000000;--cell-found-text: #ffffff;--cell-size: 44px;--radius: 4px}[data-theme=dark]{--bg: #000000;--fg: #ffffff;--border: #ffffff;--cell-bg: #000000;--cell-active: #333333;--cell-found: #ffffff;--cell-found-text: #000000}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--fg);min-height:100vh;touch-action:manipulation;transition:background .2s,color .2s}#root{min-height:100vh;display:flex;flex-direction:column}button{font-family:inherit;font-size:1rem;padding:12px 24px;border:2px solid var(--fg);background:var(--bg);color:var(--fg);border-radius:var(--radius);cursor:pointer;min-height:44px;min-width:44px;touch-action:manipulation;transition:background .15s,color .15s}button:active{background:var(--fg);color:var(--bg)}button:disabled{opacity:.5;cursor:not-allowed}input[type=text]{font-family:inherit;font-size:1rem;padding:12px;border:2px solid var(--fg);background:var(--bg);color:var(--fg);border-radius:var(--radius);min-height:44px}select{background:var(--bg);color:var(--fg);border:2px solid var(--fg)}.container{max-width:600px;margin:0 auto;padding:16px;width:100%}h1{font-size:1.5rem;margin:0 0 16px;text-align:center}h2{font-size:1.25rem;margin:0 0 12px}.app-header{display:flex;justify-content:flex-end;align-items:center;gap:8px;padding:8px 0;margin-bottom:8px;border-bottom:1px solid var(--border)}.app-header button{padding:8px 12px;min-width:auto;font-size:.875rem}.theme-toggle,.help-button{width:40px;height:40px;padding:0;display:flex;align-items:center;justify-content:center;font-size:1.25rem}.help-button{font-weight:700}.player-button{padding:8px 12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:8px}.game-header h1{margin:0;flex:1}.game-controls{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:16px}.game-grid{display:grid;gap:1px;background:var(--border);border:2px solid var(--border);margin:0 auto;-webkit-user-select:none;user-select:none}.game-cell{width:var(--cell-size);height:var(--cell-size);display:flex;align-items:center;justify-content:center;background:var(--cell-bg);font-size:1.25rem;font-weight:700;cursor:pointer}.game-cell:active{background:var(--cell-active)}.link-button{display:inline-block;text-decoration:none;color:inherit}.word-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;justify-content:center}.word-item{padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:.875rem}.word-item.found{text-decoration:line-through;opacity:.5}.success-message{text-align:center;padding:24px;border:2px solid var(--fg);margin:16px 0}.back-link{display:inline-flex;align-items:center;gap:4px;text-decoration:none;color:var(--fg);padding:8px;border:1px solid var(--border);border-radius:var(--radius)}.modal-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;background:#808080cc;display:flex;align-items:center;justify-content:center;padding:16px;z-index:1000}.modal-content{background:var(--bg);border:3px solid var(--fg);border-radius:var(--radius);padding:24px;max-width:400px;width:100%;max-height:80vh;overflow-y:auto}.modal-title{margin:0 0 16px;text-align:center}.modal-close-btn{width:100%;margin-top:20px;font-size:1.125rem;padding:16px}.help-content{line-height:1.6}.help-content p{margin:8px 0}.help-content p:empty{margin:4px 0}.dont-show-again{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:.875rem;cursor:pointer}.dont-show-again input{width:18px;height:18px}.player-list{margin-bottom:16px}.player-list p{margin:0 0 8px;font-size:.875rem}.player-option{display:block;width:100%;text-align:left;margin-bottom:8px}.player-option.selected{background:var(--fg);color:var(--bg)}.add-player p{margin:0 0 8px;font-size:.875rem}.add-player-form{display:flex;gap:8px}.add-player-form input{flex:1}.add-player-form button{flex-shrink:0}.game-cell-wall{background:var(--fg)!important}.game-cell-filled{background:var(--cell-found)!important;color:var(--cell-found-text)!important}.game-cell-selecting{background:var(--cell-active)!important}.container-wide{max-width:100%;padding:8px}.blockworld-page{display:flex;flex-direction:column;gap:8px;height:calc(100vh - 80px);min-height:500px}.blockworld-topbar{display:flex;align-items:center;gap:12px}.blockworld{display:flex;flex-direction:column;gap:8px;flex:1;min-height:0}.blockworld-toolbar{display:flex;flex-wrap:wrap;gap:12px;padding:8px;border:2px solid var(--fg);border-radius:var(--radius);background:var(--bg)}.tool-group{display:flex;flex-wrap:wrap;gap:4px;align-items:center}.tool-btn,.tex-btn{padding:8px 10px;font-size:.875rem;min-height:40px;min-width:40px;border:2px solid var(--fg);background:var(--bg);color:var(--fg);border-radius:var(--radius);cursor:pointer;display:inline-flex;align-items:center;gap:6px}.tool-btn.active,.tex-btn.active{background:var(--fg);color:var(--bg)}.tex-glyph{font-size:1.1rem;line-height:1}.tex-label{font-size:.75rem}.blockworld-stage{border:2px solid var(--fg);border-radius:var(--radius);background:var(--bg);overflow:hidden;flex:1;min-height:400px;width:100%;position:relative;touch-action:none;overscroll-behavior:none}.blockworld-svg{width:100%;height:100%;display:block;cursor:grab;shape-rendering:geometricPrecision;-webkit-user-select:none;user-select:none}.blockworld-svg:active{cursor:grabbing}.bw-face{cursor:pointer}.bw-ground{cursor:pointer;opacity:.85}.bw-ground:hover{fill:var(--cell-active)!important}.bw-face:hover{stroke-width:2}.blockworld-hint{font-size:.8125rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:4px}.blockworld-hint-pan{opacity:.7}[data-theme=dark] .blockworld-svg{filter:invert(1)}.blockworld-projectbar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:6px 8px;border:2px solid var(--fg);border-radius:var(--radius);background:var(--bg)}.bw-name,.bw-name-form{flex:1;min-width:0;display:flex;align-items:center;gap:6px;padding:6px 8px;background:transparent;border:none;color:var(--fg);font-size:1rem;text-align:left;cursor:pointer;min-height:36px}.bw-name:hover{background:var(--cell-active)}.bw-name-label{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bw-name-edit{opacity:.5;font-size:.875rem}.bw-name-form input{flex:1;min-width:0;font-size:1rem}.bw-save-status{font-size:.75rem;opacity:.6;min-width:60px;text-align:right}.bw-save-saving,.bw-save-saved{opacity:1}.bw-projectbar-actions{display:flex;gap:4px}.bw-projects{display:flex;flex-direction:column;gap:12px}.bw-projects-new{width:100%;padding:12px;font-weight:700}.bw-projects-empty{text-align:center;opacity:.6;margin:16px 0}.bw-projects-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;max-height:50vh;overflow-y:auto}.bw-projects-item{display:flex;align-items:stretch;gap:4px;border:1px solid var(--border);border-radius:var(--radius)}.bw-projects-item.current{border-color:var(--fg);border-width:2px}.bw-projects-name{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px;background:transparent;border:none;color:var(--fg);text-align:left;cursor:pointer;min-width:0}.bw-projects-name:hover{background:var(--cell-active)}.bw-projects-name .name{font-weight:700;overflow:hidden;text-overflow:ellipsis;max-width:100%}.bw-projects-name .meta{font-size:.75rem;opacity:.7}.bw-projects-rename{flex:1;display:flex;padding:6px}.bw-projects-rename input{flex:1;min-width:0}.bw-projects-actions{display:flex;flex-direction:column;justify-content:center;padding:4px;gap:2px}.bw-projects-actions button{padding:4px 8px;min-height:28px;min-width:32px;font-size:.875rem;border:1px solid var(--border);background:var(--bg);color:var(--fg);border-radius:var(--radius);cursor:pointer}.bw-projects-actions button:hover{background:var(--cell-active)}