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var(--border-color)}.tool-group:last-child{border-right:0}.tool-btn{background:transparent;border:0;cursor:pointer;border-radius:6px;padding:8px;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.tool-btn:hover{background-color:var(--secondary-color)}.tool-btn.active{background-color:var(--primary-color);color:white}.tool-btn svg{width:20px;height:20px}.canvas-container{flex:1;position:relative;background-color:white;overflow:auto;width:100%;height:calc(100vh - 120px)}#canvas{position:absolute;top:0;left:0;cursor:crosshair;background-color:white;z-index:1;max-width:100%;max-height:100%;border:1px solid #e1e4e8}.settings-panel{position:fixed;top:80px;right:-270px;background-color:white;border-radius:8px 0 0 8px;box-shadow:0 4px 12px var(--shadow-color);padding:15px;width:270px;z-index:10;transition:right .3s ease;max-height:calc(100vh - 100px);overflow-y:auto}.settings-panel.show{right:0}.settings-title{font-size:16px;font-weight:600;margin-bottom:15px;display:flex;justify-content:space-between;align-items:center}.close-settings{background:0;border:0;cursor:pointer;font-size:20px;line-height:1}.setting-group{margin-bottom:15px}.setting-group:last-child{margin-bottom:0}.setting-label{display:block;margin-bottom:5px;font-size:14px;color:#666}.color-options{display:flex;flex-wrap:wrap;gap:8px}.color-option{width:30px;height:30px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all .2s ease}.color-option.selected{border-color:var(--primary-color);transform:scale(1.1)}.custom-color{width:30px;height:30px;padding:0;border:0;border-radius:50%;cursor:pointer;background-color:transparent;background-image:linear-gradient(45deg,#f1f1f1 25%,transparent 25%,transparent 75%,#f1f1f1 75%),linear-gradient(45deg,#f1f1f1 25%,transparent 25%,transparent 75%,#f1f1f1 75%);background-size:10px 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