:root{--bg-deep:#0c0e14;--bg-primary:#12141c;--bg-secondary:#1a1d28;--bg-elevated:#222636;--bg-glass:#1e2232a6;--bg-glass-hover:#282d41bf;--accent-primary:#6c5ce7;--accent-primary-glow:#6c5ce759;--accent-secondary:#00cec9;--accent-secondary-glow:#00cec940;--accent-warm:#fd79a8;--accent-warm-glow:#fd79a840;--text-primary:#edf0f7;--text-secondary:#9ba3b8;--text-muted:#5f6780;--text-on-accent:#fff;--border-subtle:#ffffff0f;--border-medium:#ffffff1a;--border-accent:#6c5ce766;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 4px 20px #0006;--shadow-lg:0 8px 40px #00000080;--shadow-glow:0 0 30px var(--accent-primary-glow);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s cubic-bezier(.16, 1, .3, 1);--font-primary:"Noto Sans SC", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"SF Mono", "Fira Code", "JetBrains Mono", monospace;--sidebar-width:300px;--legend-width:240px;--header-height:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px}body{font-family:var(--font-primary);background:var(--bg-deep);color:var(--text-primary);min-height:100vh;overflow:hidden}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#fff3}#app-header{height:var(--header-height);background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle);z-index:100;align-items:center;display:flex;position:relative}#app-header:after{content:"";background:linear-gradient(90deg, transparent, var(--accent-primary), var(--accent-secondary), transparent);opacity:.5;height:1px;position:absolute;bottom:0;left:0;right:0}.header-inner{justify-content:space-between;align-items:center;width:100%;padding:0 28px;display:flex}.logo{align-items:center;gap:12px;display:flex}.logo-icon{filter:drop-shadow(0 0 8px var(--accent-primary-glow));font-size:28px;animation:3s ease-in-out infinite logoPulse}@keyframes logoPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.85;transform:scale(1.08)}}.logo h1{background:linear-gradient(135deg, var(--text-primary), var(--accent-secondary));-webkit-text-fill-color:transparent;letter-spacing:1px;-webkit-background-clip:text;background-clip:text;font-size:1.3rem;font-weight:700}.subtitle{color:var(--text-muted);letter-spacing:.5px;font-size:.85rem;font-weight:300}#app-main{height:calc(100vh - var(--header-height));display:flex}#control-panel{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);border-right:1px solid var(--border-subtle);flex-direction:column;gap:16px;padding:20px 16px;display:flex;overflow-y:auto}.panel-section{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);transition:border-color var(--transition-normal);padding:18px}.panel-section:hover{border-color:var(--border-medium)}.section-title{color:var(--text-primary);align-items:center;gap:8px;margin-bottom:14px;font-size:.9rem;font-weight:600;display:flex}.section-icon{font-size:1rem}.drop-zone{border:2px dashed var(--border-medium);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all var(--transition-normal);padding:24px 16px;position:relative;overflow:hidden}.drop-zone:before{content:"";background:linear-gradient(135deg, var(--accent-primary-glow), transparent, var(--accent-secondary-glow));opacity:0;transition:opacity var(--transition-normal);position:absolute;inset:0}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent-primary);background:#6c5ce70d}.drop-zone:hover:before,.drop-zone.drag-over:before{opacity:1}.drop-zone-content{z-index:1;position:relative}.drop-icon{filter:drop-shadow(0 2px 4px #0000004d);margin-bottom:8px;font-size:2.5rem}.drop-text{color:var(--text-primary);font-size:.95rem;font-weight:500}.drop-hint{color:var(--text-muted);margin-top:4px;font-size:.8rem}.drop-formats{color:var(--text-muted);border-top:1px solid var(--border-subtle);margin-top:8px;padding-top:8px;font-size:.7rem}.image-info{flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;display:flex}.image-tag{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:6px;padding:3px 8px;font-size:.75rem}.btn-icon{border:1px solid var(--border-medium);color:var(--text-muted);cursor:pointer;width:24px;height:24px;transition:all var(--transition-fast);background:0 0;border-radius:6px;justify-content:center;align-items:center;margin-left:auto;font-size:.7rem;display:flex}.btn-icon:hover{color:var(--accent-warm);border-color:var(--accent-warm);background:#fd79a81a}.control-group{margin-bottom:16px}.control-group:last-child{margin-bottom:0}.control-label{color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:8px;font-size:.82rem;font-weight:500;display:flex}.control-value{background:var(--accent-primary);color:var(--text-on-accent);font-size:.75rem;font-weight:600;font-family:var(--font-mono);text-align:center;border-radius:20px;min-width:32px;padding:2px 10px}.slider{appearance:none;background:var(--bg-elevated);width:100%;height:6px;transition:background var(--transition-fast);border-radius:3px;outline:none}.slider::-webkit-slider-thumb{appearance:none;background:var(--accent-primary);cursor:pointer;width:20px;height:20px;box-shadow:0 0 10px var(--accent-primary-glow), var(--shadow-sm);transition:transform var(--transition-fast);border-radius:50%}.slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.slider::-moz-range-thumb{background:var(--accent-primary);cursor:pointer;width:20px;height:20px;box-shadow:0 0 10px var(--accent-primary-glow), var(--shadow-sm);border:none;border-radius:50%}.slider-labels{color:var(--text-muted);justify-content:space-between;margin-top:4px;font-size:.7rem;display:flex}.select-input{background:var(--bg-elevated);width:100%;color:var(--text-primary);border:1px solid var(--border-medium);border-radius:var(--radius-sm);font-family:var(--font-primary);cursor:pointer;transition:border-color var(--transition-fast);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%239ba3b8' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;outline:none;padding:8px 12px;font-size:.85rem}.select-input:hover,.select-input:focus{border-color:var(--accent-primary)}.select-input option{background:var(--bg-secondary);color:var(--text-primary)}.toggle-group{flex-direction:column;gap:8px;display:flex}.toggle-item{cursor:pointer;align-items:center;gap:10px;display:flex}.toggle-item input[type=checkbox]{display:none}.toggle-slider{background:var(--bg-elevated);width:36px;height:20px;transition:background var(--transition-normal);border:1px solid var(--border-medium);border-radius:10px;flex-shrink:0;position:relative}.toggle-slider:after{content:"";background:var(--text-muted);width:14px;height:14px;transition:all var(--transition-normal);border-radius:50%;position:absolute;top:2px;left:2px}.toggle-item input:checked+.toggle-slider{background:var(--accent-primary);border-color:var(--accent-primary)}.toggle-item input:checked+.toggle-slider:after{background:#fff;left:18px}.toggle-text{color:var(--text-secondary);font-size:.82rem}.view-switch{background:var(--bg-elevated);border-radius:var(--radius-sm);gap:4px;padding:3px;display:flex}.view-btn{color:var(--text-muted);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;border-radius:6px;flex:1;padding:6px 4px;font-size:.72rem}.view-btn:hover{color:var(--text-secondary);background:#ffffff0d}.view-btn.active{background:var(--accent-primary);color:var(--text-on-accent);box-shadow:0 2px 8px var(--accent-primary-glow)}.export-buttons{gap:8px;display:flex}.btn{border-radius:var(--radius-sm);font-family:var(--font-primary);cursor:pointer;transition:all var(--transition-normal);border:none;flex:1;justify-content:center;align-items:center;gap:6px;padding:10px 12px;font-size:.82rem;font-weight:600;display:flex}.btn-primary{background:linear-gradient(135deg, var(--accent-primary), #8471ed);color:var(--text-on-accent);box-shadow:0 4px 15px var(--accent-primary-glow)}.btn-primary:hover{box-shadow:0 6px 20px var(--accent-primary-glow);transform:translateY(-1px)}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-medium)}.btn-secondary:hover{border-color:var(--accent-secondary);background:#00cec914;transform:translateY(-1px)}.btn-icon-left{font-size:1rem}.grid-info{background:var(--bg-elevated);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);flex-direction:column;gap:4px;margin-top:12px;padding:10px 12px;display:flex}.grid-info span{color:var(--text-muted);font-size:.75rem;font-family:var(--font-mono)}#canvas-area{background:var(--bg-primary);background-image:radial-gradient(circle at 20% 30%,#6c5ce70a 0%,#0000 50%),radial-gradient(circle at 80% 70%,#00cec90a 0%,#0000 50%);flex:1;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.canvas-placeholder{text-align:center;color:var(--text-muted);animation:.6s fadeIn}.placeholder-content{padding:40px}.placeholder-icon{opacity:.2;margin-bottom:16px;font-size:4rem;animation:4s ease-in-out infinite floatSlow}@keyframes floatSlow{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.canvas-placeholder h3{color:var(--text-secondary);margin-bottom:8px;font-size:1.1rem;font-weight:500}.canvas-placeholder p{font-size:.85rem}.canvas-container{cursor:grab;position:relative}.canvas-container:active{cursor:grabbing}.canvas-container canvas{border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);display:block}.loading-overlay{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0c0e14d9;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.loading-spinner{border:3px solid var(--border-medium);border-top-color:var(--accent-primary);border-radius:50%;width:48px;height:48px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-secondary);margin-top:16px;font-size:.9rem;animation:1.5s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}#legend-panel{width:var(--legend-width);min-width:var(--legend-width);background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);border-left:1px solid var(--border-subtle);padding:20px 14px;overflow-y:auto}#legend-panel .section-title{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:5;margin:-20px -14px 12px;padding:12px 10px;position:sticky;top:-20px}.legend-list{flex-direction:column;gap:3px;display:flex}.legend-item{transition:background var(--transition-fast);cursor:default;border-radius:6px;align-items:center;gap:8px;padding:6px 8px;display:flex}.legend-item:hover{background:#ffffff0a}.legend-swatch{border:1px solid #ffffff1a;border-radius:50%;flex-shrink:0;width:18px;height:18px;box-shadow:inset 0 1px 2px #0003}.legend-symbol{font-family:var(--font-mono);color:var(--text-primary);text-align:center;flex-shrink:0;width:18px;font-size:.8rem;font-weight:600}.legend-name{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:.78rem;overflow:hidden}.legend-count{font-family:var(--font-mono);color:var(--text-muted);flex-shrink:0;font-size:.72rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.panel-section{animation:.4s fadeIn}@media (width<=1024px){:root{--sidebar-width:260px;--legend-width:200px}}@media (width<=768px){#app-main{flex-direction:column}#control-panel,#legend-panel{width:100%;min-width:unset;border-left:none;border-right:none;border-bottom:1px solid var(--border-subtle);max-height:40vh}#canvas-area{min-height:50vh}.subtitle{display:none}}