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12px;color:var(--text-primary);font-size:14px}.modal-description ul{margin:0;padding-left:20px;color:var(--text-secondary);font-size:13px;line-height:1.8}.modal-description li{margin-bottom:6px}.modal-description strong{color:var(--text-primary);font-weight:600}.modal-content form{padding:24px}.modal-content textarea{resize:vertical;font-family:inherit}.optional-label{font-size:12px;color:var(--text-secondary);font-weight:400}.modal-large{max-width:700px}.help-content{padding:24px;max-height:70vh;overflow-y:auto}.help-section{margin-bottom:32px}.help-section:last-child{margin-bottom:0}.help-section h3{font-size:18px;font-weight:600;color:var(--accent-primary);margin-bottom:12px;display:flex;align-items:center;gap:8px}.help-section h3 i{width:20px;height:20px}.help-section p{font-size:14px;line-height:1.6;color:var(--text-secondary);margin-bottom:12px}.help-section ul{list-style:none;padding:0;margin:8px 0}.help-section li{font-size:14px;line-height:1.6;color:var(--text-secondary);padding:6px 0 6px 24px;position:relative}.help-section li:before{content:"•";position:absolute;left:8px;color:var(--accent-primary);font-weight:700}.help-section strong{color:var(--text-primary);font-weight:600}.shortcuts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:16px}.shortcut-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px}.shortcut-item kbd{display:inline-block;padding:4px 8px;font-size:12px;font-weight:600;line-height:1;color:var(--text-primary);background:var(--bg-secondary);border:2px solid var(--border-light);border-radius:4px;box-shadow:0 2px 0 var(--border-color);font-family:SF Mono,Monaco,Menlo,monospace;white-space:nowrap}.shortcut-item span{font-size:13px;color:var(--text-secondary);flex:1}.shortcut-note{margin-top:16px;font-size:12px;color:var(--text-secondary);font-style:italic;text-align:center}.canvas-container{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);position:relative;overflow:hidden}#particle-canvas{border:2px solid var(--border-color);border-radius:12px;cursor:move;box-shadow:var(--shadow-lg),0 0 60px #6366f126;transition:box-shadow .3s}#particle-canvas.transparent-bg{background-image:linear-gradient(45deg,#2a2a3e 25%,transparent 25%),linear-gradient(-45deg,#2a2a3e 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#2a2a3e 75%),linear-gradient(-45deg,transparent 75%,#2a2a3e 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;background-color:#1e1e2e}#particle-canvas:hover{box-shadow:var(--shadow-lg),0 0 80px #6366f140}.canvas-overlay{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none}.canvas-info{position:absolute;bottom:24px;left:50%;transform:translate(-50%);background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:10px 20px;border-radius:8px;border:1px solid var(--border-color);font-size:12px;color:var(--text-secondary);box-shadow:var(--shadow-md);animation:fadeInUp .5s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.progress-bar{position:relative;width:100%;height:36px;background:var(--bg-secondary);border:1.5px solid var(--border-color);border-radius:8px;overflow:hidden;margin-top:12px;box-shadow:inset 0 2px 4px #0000004d}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));transition:width .3s ease;width:0%;box-shadow:0 0 20px var(--accent-glow);position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.progress-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:13px;font-weight:600;color:var(--text-primary);text-shadow:0 1px 2px rgba(0,0,0,.5);z-index:1}.range-input{display:flex;align-items:center;gap:6px;width:100%}.range-input input[type=number]{flex:1;min-width:0;max-width:80px;padding:6px 8px;font-size:12px}.range-input span{color:var(--text-secondary);font-size:12px;flex-shrink:0}.notification{position:fixed;top:80px;left:50%;transform:translate(-50%) translateY(-100px);background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;padding:14px 28px;border-radius:12px;font-size:14px;font-weight:600;box-shadow:var(--shadow-lg);opacity:0;transition:all .3s cubic-bezier(.4,0,.2,1);z-index:10000;pointer-events:none}.notification.show{opacity:1;transform:translate(-50%) translateY(0)}.btn[title]:after,.btn-icon[title]:after{content:attr(title);position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%) translateY(-4px);background:var(--bg-tertiary);color:var(--text-primary);padding:6px 10px;border-radius:6px;font-size:11px;font-weight:500;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .2s,transform .2s;border:1px solid var(--border-light);box-shadow:var(--shadow-md);z-index:1000;letter-spacing:.3px}.btn[title]:hover:after,.btn-icon[title]:hover:after{opacity:1;transform:translate(-50%) translateY(0)}.btn,.btn-icon{position:relative}@media (max-width: 1200px){.sidebar{width:240px}}@media (max-width: 768px){.main-container{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border-color);max-height:300px}.sidebar-right{border-left:none;border-top:1px solid var(--border-color)}}