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var(--border-color);border-radius:6px;padding:12px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;z-index:1000;box-shadow:0 4px 12px #0000004d}.color-option{width:32px;height:32px;border-radius:4px;border:2px solid var(--border-color);cursor:pointer;transition:transform .2s ease,border-color .2s ease}.color-option:hover{transform:scale(1.1);border-color:var(--accent-primary)}.toolbar-brush-width{display:flex;align-items:center;gap:6px}.toolbar-brush-width input[type=range]{width:80px}.toolbar-brush-width span{min-width:35px;font-size:12px;color:var(--text-secondary)}.toolbar-zoom{display:flex;align-items:center;gap:6px}.btn-icon{width:30px;height:30px;padding:0;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center}.zoom-level{min-width:50px;text-align:center;font-size:12px;font-weight:600;color:var(--text-primary);cursor:pointer;padding:4px 6px;border-radius:4px;transition:background-color .2s 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0}.shortcut-key{font-family:monospace;font-size:13px;padding:4px 10px;background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:4px;min-width:120px;text-align:center;font-weight:600;box-shadow:0 2px 0 var(--border-color)}.shortcut-description{flex:1;font-size:14px;color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translate(-50%,-40%)}to{opacity:1;transform:translate(-50%,-50%)}}@media (max-width: 768px){.shortcuts-modal{width:95%;max-height:90vh}.shortcut-key{min-width:100px;font-size:11px}.shortcut-description{font-size:13px}}.room{display:flex;height:100vh;overflow:hidden}.room-sidebar{width:280px;background-color:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;overflow-y:auto}.room-info{padding:20px;border-bottom:1px solid var(--border-color)}.room-info h3{font-size:20px;margin-bottom:8px}.room-info 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p{font-size:18px;color:var(--text-secondary)}.drawings-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.drawing-card{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;overflow:hidden;cursor:pointer;transition:transform .2s ease,border-color .2s ease}.drawing-card:hover{transform:translateY(-4px);border-color:var(--accent-primary)}.drawing-thumbnail{width:100%;height:200px;background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:center}.drawing-thumbnail img{width:100%;height:100%;object-fit:cover}.drawing-placeholder{color:var(--text-secondary)}.drawing-info{padding:16px}.drawing-info h3{font-size:16px;margin-bottom:8px}.drawing-info p{font-size:14px;color:var(--text-secondary)}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.btn{padding:10px 20px;border-radius:6px;font-size:14px;font-weight:500;transition:all .2s 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var(--border-color)}.modal-header{margin-bottom:20px}.modal-title{font-size:20px;font-weight:600}.modal-body{margin-bottom:20px}.modal-footer{display:flex;gap:10px;justify-content:flex-end}:root{--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--bg-tertiary: #3d3d3d;--text-primary: #ffffff;--text-secondary: #b0b0b0;--border-color: #4d4d4d;--accent-primary: #4a9eff;--accent-hover: #6bb0ff;--success: #4caf50;--danger: #f44336;--warning: #ff9800}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);overflow:hidden}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:all .2s 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