:root{--bg-color: #0f0f0f;--toolbar-bg: #1a1a1a;--toolbar-bg-end: #141414;--toolbar-hover: #252525;--text-color: #e5e5e5;--text-muted: #737373;--accent-color: #6366f1;--accent-hover: #818cf8;--accent-gradient-end: #4f46e5;--border-color: #2a2a2a;--canvas-bg: #ffffff;--danger-color: #ef4444;--canvas-area-bg-center: #1a1a1a;--canvas-area-bg-edge: #0a0a0a;--hover-bg: #333333;--hover-border: #444444}*{box-sizing:border-box;margin:0;padding:0;-webkit-user-select:none;user-select:none}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg-color);color:var(--text-color);overflow:hidden;height:100vh;width:100vw}#app{display:flex;height:100%}.toolbar{width:200px;min-width:200px;background:linear-gradient(180deg,var(--toolbar-bg) 0%,var(--toolbar-bg-end) 100%);border-right:1px solid var(--border-color);display:flex;flex-direction:column;padding:16px;gap:20px;overflow-y:auto}.toolbar-section{display:flex;flex-direction:column;gap:10px}.section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.tool-btn{background:var(--toolbar-hover);border:1px solid var(--border-color);color:var(--text-muted);padding:10px;border-radius:8px;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.tool-btn:hover{background-color:var(--hover-bg);color:var(--text-color);border-color:var(--hover-border)}.tool-btn.active{background:linear-gradient(135deg,var(--accent-color) 0%,var(--accent-gradient-end) 100%);color:#fff;border-color:var(--accent-color);box-shadow:0 0 12px #6366f166}#color-picker{width:100%;height:36px;padding:0;border:none;border-radius:8px;cursor:pointer;background:transparent}#color-picker::-webkit-color-swatch-wrapper{padding:0}#color-picker::-webkit-color-swatch{border-radius:8px;border:2px solid var(--border-color)}.palette{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.color-swatch{width:100%;aspect-ratio:1;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:all .15s ease}.color-swatch:hover{transform:scale(1.1);z-index:1}.color-swatch.active{border-color:var(--accent-color);box-shadow:0 0 8px #6366f180}#brush-size{width:100%;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--border-color);border-radius:3px;outline:none}#brush-size::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;background:var(--accent-color);border-radius:50%;cursor:pointer;transition:transform .1s}#brush-size::-webkit-slider-thumb:hover{transform:scale(1.2)}.canvas-size-select{width:100%;padding:8px 10px;background:var(--toolbar-hover);border:1px solid var(--border-color);border-radius:6px;color:var(--text-color);font-size:12px;cursor:pointer;outline:none;transition:all .15s ease}.canvas-size-select:hover{border-color:#444}.canvas-size-select:focus{border-color:var(--accent-color)}.canvas-size-select option{background:var(--toolbar-bg);color:var(--text-color)}.toolbar-section.actions{margin-top:auto;gap:8px}.action-btn{display:flex;align-items:center;gap:8px;width:100%;padding:10px 12px;background:var(--toolbar-hover);border:1px solid var(--border-color);border-radius:8px;color:var(--text-muted);font-size:13px;cursor:pointer;transition:all .15s ease}.action-btn:hover{background:var(--hover-bg);color:var(--text-color)}.action-btn.danger:hover{background:var(--danger-color);border-color:var(--danger-color);color:#fff}.canvas-area{flex:1;position:relative;overflow:hidden;background:radial-gradient(circle at 50% 50%,var(--canvas-area-bg-center) 0%,var(--canvas-area-bg-edge) 100%)}.canvas-container{width:100%;height:100%;overflow:hidden;position:relative}canvas{position:absolute;background-color:var(--canvas-bg);box-shadow:0 4px 40px #00000080;cursor:crosshair}canvas.panning{cursor:grab}canvas.panning:active{cursor:grabbing}.zoom-controls{position:absolute;bottom:20px;right:20px;display:flex;align-items:center;gap:8px;background:var(--toolbar-bg);padding:8px 12px;border-radius:8px;border:1px solid var(--border-color);box-shadow:0 4px 12px #0000004d}.zoom-btn{width:28px;height:28px;background:var(--toolbar-hover);border:1px solid var(--border-color);border-radius:6px;color:var(--text-color);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.zoom-btn:hover{background:var(--hover-bg)}#zoom-level{font-size:12px;font-weight:500;min-width:45px;text-align:center;color:var(--text-muted)}.room-info{position:absolute;bottom:20px;left:20px;background:var(--toolbar-bg);padding:10px 14px;border-radius:8px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 12px #0000004d;border:1px solid var(--border-color);font-size:13px}.room-id-container{display:flex;align-items:center;gap:8px;color:var(--text-muted)}.room-id-container code{background:#6366f126;color:var(--accent-hover);padding:4px 8px;border-radius:4px;font-family:SF Mono,Monaco,monospace;font-size:12px}.icon-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center;transition:all .15s ease}.icon-btn:hover{background:var(--toolbar-hover);color:var(--text-color)}.users-connected{display:flex;align-items:center;gap:6px;color:var(--text-muted)}.toast{position:absolute;bottom:80px;left:50%;transform:translate(-50%);background:linear-gradient(135deg,#10b981,#059669);color:#fff;padding:10px 20px;border-radius:20px;font-size:13px;font-weight:500;opacity:1;transition:all .3s ease;box-shadow:0 4px 12px #10b98166}.toast.hidden{opacity:0;transform:translate(-50%) translateY(10px);pointer-events:none}.toolbar::-webkit-scrollbar{width:6px}.toolbar::-webkit-scrollbar-track{background:transparent}.toolbar::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.toolbar::-webkit-scrollbar-thumb:hover{background:var(--hover-border)}.text-input-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.text-input-overlay.hidden{display:none}.text-input-container{background:var(--toolbar-bg);border:1px solid var(--border-color);border-radius:12px;padding:20px;min-width:320px;box-shadow:0 8px 32px #0006}.text-input-container input{width:100%;padding:12px 14px;background:var(--bg-color);border:1px solid var(--border-color);border-radius:8px;color:var(--text-color);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s ease}.text-input-container input:focus{border-color:var(--accent-color)}.text-input-actions{display:flex;gap:10px;margin-top:14px;justify-content:flex-end}.text-btn{padding:8px 16px;border-radius:6px;border:1px solid var(--border-color);background:var(--toolbar-hover);color:var(--text-muted);font-size:13px;cursor:pointer;transition:all .15s ease}.text-btn:hover{background:var(--hover-bg);color:var(--text-color)}.text-btn.primary{background:var(--accent-color);border-color:var(--accent-color);color:#fff}.text-btn.primary:hover{background:var(--accent-hover)}.canvas-options{display:flex;align-items:center;gap:8px}.canvas-options .canvas-size-select{flex:1}.dark-mode-toggle{cursor:pointer;display:flex;align-items:center;flex-shrink:0}.dark-mode-toggle input{display:none}.toggle-track{position:relative;width:44px;height:24px;background:var(--border-color);border-radius:12px;transition:background .3s ease;display:flex;align-items:center;padding:0 3px}.toggle-icon{font-size:12px;line-height:1;z-index:1;transition:opacity .3s ease}.toggle-icon.sun{opacity:1}.toggle-icon.moon{opacity:.4;margin-left:auto}.toggle-thumb{position:absolute;width:18px;height:18px;background:#fff;border-radius:50%;left:3px;transition:left .3s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 3px #0000004d}.dark-mode-toggle input:checked+.toggle-track{background:var(--accent-color)}.dark-mode-toggle input:checked+.toggle-track .toggle-thumb{left:23px}.dark-mode-toggle input:checked+.toggle-track .sun{opacity:.4}.dark-mode-toggle input:checked+.toggle-track .moon{opacity:1}.dark-mode-toggle.disabled{opacity:.35;pointer-events:none;cursor:not-allowed}.canvas-size-inputs{display:flex;align-items:flex-end;gap:10px;margin-bottom:4px}.size-input-group{flex:1;display:flex;flex-direction:column;gap:4px}.size-input-group label{font-size:11px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.size-input-group input{width:100%;padding:10px 12px;background:var(--bg-color);border:1px solid var(--border-color);border-radius:8px;color:var(--text-color);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s ease}.size-input-group input:focus{border-color:var(--accent-color)}.size-separator{color:var(--text-muted);font-size:18px;padding-bottom:8px}.connection-status{display:flex;align-items:center;margin-left:4px}.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.status-dot.connected{background:#22c55e;box-shadow:0 0 6px #22c55e99}.status-dot.connecting{background:#eab308;animation:pulse 1.5s ease-in-out infinite}.status-dot.disconnected{background:#ef4444}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}#remote-cursors{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10}.remote-cursor{position:absolute;pointer-events:none;transition:left .1s linear,top .1s linear;z-index:10}.remote-cursor-pointer{width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:10px solid currentColor;transform:rotate(-30deg)}.remote-cursor-label{font-size:10px;font-weight:600;padding:1px 5px;border-radius:3px;color:#fff;white-space:nowrap;margin-left:8px;margin-top:-2px}.mobile-toolbar,.mobile-backdrop{display:none}.toolbar-inner{display:flex;flex-direction:column;gap:20px;height:100%}@media(max-width:768px){.toolbar{position:fixed;bottom:0;left:0;right:0;top:auto;width:100%;min-width:unset;height:auto;max-height:65vh;border-right:none;border-top:1px solid var(--border-color);border-radius:20px 20px 0 0;z-index:200;transform:translateY(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px));overflow-y:auto;box-shadow:0 -8px 32px #00000080}.toolbar.open{transform:translateY(0)}.toolbar:before{content:"";display:block;width:40px;height:4px;border-radius:2px;background:var(--border-color);margin:0 auto 12px;flex-shrink:0}.toolbar-inner{gap:14px}.tools-grid{grid-template-columns:repeat(4,1fr);gap:8px}.tool-btn{padding:12px}.palette{grid-template-columns:repeat(8,1fr)}.color-swatch{border-radius:50%}#color-picker{height:32px}.toolbar-section.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:0}.action-btn{padding:10px;font-size:12px;justify-content:center}.action-btn span{display:none}.mobile-toolbar{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:150;background:linear-gradient(180deg,var(--toolbar-bg) 0%,var(--toolbar-bg-end) 100%);border-top:1px solid var(--border-color);padding:6px 8px;padding-bottom:calc(6px + env(safe-area-inset-bottom,0px));gap:4px;align-items:center;justify-content:space-around;box-shadow:0 -4px 20px #0006}.mobile-tool-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;transition:all .15s ease;-webkit-tap-highlight-color:transparent}.mobile-tool-btn:active{transform:scale(.9)}.mobile-tool-btn.active{background:linear-gradient(135deg,var(--accent-color) 0%,var(--accent-gradient-end) 100%);color:#fff;box-shadow:0 0 12px #6366f166}.mobile-more-btn{position:relative}.mobile-more-btn.panel-open{background:var(--accent-color);color:#fff}.mobile-backdrop{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:190;transition:opacity .3s ease}.mobile-backdrop.visible{display:block;opacity:1}.mobile-backdrop.hidden{opacity:0;pointer-events:none}.zoom-controls{bottom:70px;right:12px;padding:6px 10px}.zoom-btn{width:32px;height:32px}.room-info{top:12px;bottom:auto;left:12px;padding:8px 10px;font-size:12px;gap:10px}.room-id-container code{font-size:11px;padding:3px 6px}#app{flex-direction:column}.canvas-area{flex:1;height:100%}.text-input-container{min-width:unset;width:90vw;max-width:360px}.toast{bottom:80px}}