.main-workspace{display:flex;flex:1;min-height:0;overflow:hidden;background:var(--bg-dark)}.frame-card img,.preview-container,.edit-modal-preview{--checker: rgba(128, 128, 128, .2);background-image:linear-gradient(45deg,var(--checker) 25%,transparent 25%),linear-gradient(-45deg,var(--checker) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker) 75%),linear-gradient(-45deg,transparent 75%,var(--checker) 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0}.frame-panel{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden}.panel-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:12px 16px;background:var(--bg-panel);border-bottom:1px solid var(--border)}.panel-toolbar input[type=number],.sidebar input[type=number],.split-modal input[type=number]{color:var(--text-main)!important;border-radius:var(--radius-sm)!important;font-size:.85rem}.frame-grid-scroll{flex:1;min-height:0;position:relative;overflow-y:auto;padding:20px}.frame-grid-scroll.file-drag-over{outline:2px dashed var(--primary);outline-offset:-2px;background:rgb(var(--primary-rgb) / .04)}.file-drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:rgb(var(--primary-rgb) / .08);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);color:var(--primary);font-size:1rem;font-weight:600;pointer-events:none}.file-drop-overlay p{margin:0}.frame-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:12px}.frame-card{position:relative;aspect-ratio:1;overflow:hidden;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:border-color .15s,box-shadow .15s}.frame-card:hover{border-color:var(--border-strong)}.frame-card.selected{border-color:var(--primary);box-shadow:0 0 0 2px rgb(var(--primary-rgb) / .3)}.frame-card img{display:block;width:100%;height:100%;object-fit:contain;background-color:var(--bg-card)}.frame-index{position:absolute;top:5px;left:5px;padding:1px 7px;border-radius:var(--radius-pill);background:#0009;color:#fff;font-size:.68rem;font-weight:600;line-height:1.5;pointer-events:none}.frame-edit-btn,.frame-delete-btn{position:absolute;top:5px;z-index:1;display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:none;border-radius:var(--radius-sm);background:#0009;color:#fff;cursor:pointer;opacity:0;transition:opacity .15s,background .15s}.frame-delete-btn{right:5px}.frame-edit-btn{right:31px}.frame-card:hover .frame-edit-btn,.frame-card:hover .frame-delete-btn,.frame-edit-btn:focus-visible,.frame-delete-btn:focus-visible{opacity:1}.frame-edit-btn:hover{background:var(--primary);color:var(--on-primary)}.frame-delete-btn:hover{background:var(--danger);color:#fff}.frame-card[draggable=true]{cursor:grab}.frame-card[draggable=true]:active{cursor:grabbing}.frame-card.drag-over{border-color:var(--secondary);box-shadow:0 0 0 2px rgb(var(--secondary-rgb) / .3)}.toolbar-tabs{display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin-top:4px;border-bottom:1px solid var(--border)}.toolbar-tab{margin-bottom:-1px;padding:8px 12px;background:none;border:none;border-bottom:2px solid transparent;color:var(--text-muted);font-family:inherit;font-size:.84rem;font-weight:600;cursor:pointer;transition:color .15s,border-color .15s}.toolbar-tab:hover{color:var(--text-main)}.toolbar-tab.active{color:var(--text-main);border-bottom-color:var(--primary)}.tab-content{padding:12px 0 0}.sidebar{flex-shrink:0;display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;background:var(--bg-panel);border-left:1px solid var(--border)}.resize-handle{position:relative;z-index:2;flex-shrink:0;width:7px;margin:0 -3px;background:transparent;cursor:col-resize;transition:background .15s}.resize-handle:hover,.resize-handle:active{background:rgb(var(--primary-rgb) / .5)}.sidebar-section{padding:18px 20px;border-bottom:1px solid var(--border)}.sidebar-section:last-child{border-bottom:none}.sidebar-section h3{margin:0 0 12px;font-size:.8rem;font-weight:600;color:var(--text-muted)}.sidebar-section label{font-size:.85rem;color:var(--text-muted)}.preview-container{position:relative;width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;overflow:hidden;background-color:var(--bg-dark);border:1px solid var(--border);border-radius:var(--radius-md);touch-action:none}.preview-container canvas{max-width:100%;max-height:100%;transform-origin:center center;will-change:transform}.preview-container.zoomed{cursor:grab}.preview-container.zoomed:active{cursor:grabbing}.preview-container.picking,.preview-container.picking.zoomed{cursor:crosshair}.preview-resize-grip{position:absolute;left:0;right:0;bottom:0;z-index:2;display:flex;align-items:center;justify-content:center;height:12px;cursor:ns-resize}.preview-resize-grip:before{content:"";width:36px;height:3px;border-radius:var(--radius-pill);background:var(--text-faint);opacity:.7}.preview-resize-grip:hover:before{background:var(--primary);opacity:1}.eyedropper-active-indicator{position:absolute;top:10px;right:10px;padding:4px 10px;border-radius:var(--radius-sm);background:var(--primary);color:var(--on-primary);font-size:.75rem;font-weight:600;pointer-events:none}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100%;gap:36px;padding:40px 20px;color:var(--text-muted)}.empty-drop-zone{display:flex;flex-direction:column;align-items:center;gap:6px;width:100%;max-width:560px;padding:44px 32px;border:1px dashed var(--border-strong);border-radius:var(--radius-lg);text-align:center;transition:border-color .2s,background .2s}.file-drag-over .empty-drop-zone{border-color:var(--primary);background:rgb(var(--primary-rgb) / .06)}.empty-drop-zone .material-symbols-outlined{margin-bottom:6px;font-size:40px;color:var(--primary)}.empty-drop-title{margin:0;font-size:.98rem;font-weight:600;color:var(--text-main)}.empty-drop-sub{margin:0;font-size:.8rem;color:var(--text-muted)}.empty-drop-title,.empty-drop-sub,.empty-feature-card h4,.empty-feature-card p{word-break:keep-all;overflow-wrap:anywhere}.empty-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px 20px;width:100%;max-width:760px}.empty-feature-card{display:grid;grid-template-columns:22px minmax(0,1fr);column-gap:12px;align-items:start;min-width:0;padding:10px 12px;border-radius:var(--radius-md);text-align:left}.empty-feature-card .material-symbols-outlined{grid-row:1 / span 2;margin-top:1px;font-size:22px;color:var(--primary)}.empty-feature-card h4{grid-column:2;margin:0 0 2px;font-size:.85rem;font-weight:600;color:var(--text-main)}.empty-feature-card p{grid-column:2;margin:0;font-size:.78rem;line-height:1.45;color:var(--text-muted)}.edit-modal,.split-modal{width:90%;padding:24px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain}.edit-modal{max-width:700px}.split-modal{max-width:500px}.split-modal h3{font-size:1rem;font-weight:600}.edit-modal-body{display:flex;gap:20px;margin-top:16px}.edit-modal-preview{flex:1;min-height:200px;display:flex;align-items:center;justify-content:center;overflow:hidden;background-color:var(--bg-dark);border:1px solid var(--border);border-radius:var(--radius-md)}.edit-modal-preview canvas{max-width:100%;max-height:300px}.edit-modal-controls{width:260px;display:flex;flex-direction:column;gap:6px;max-height:400px;overflow-y:auto}.sidebar-toggle,.sidebar-backdrop{display:none}@media(max-width:1200px){.sidebar{max-width:34vw}}@media(max-width:1024px){.panel-toolbar{padding:10px 12px;gap:8px}}@media(max-width:768px){.resize-handle{display:none}.sidebar{position:fixed;top:0;right:0;bottom:0;z-index:960;width:min(340px,90vw)!important;max-width:none;padding-top:52px;border-right:none;border-left:1px solid var(--border);box-shadow:var(--shadow-2);transform:translate(105%);transition:transform .28s ease}.sidebar.open{transform:translate(0)}.sidebar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:950;background:#0000008c;opacity:0;pointer-events:none;transition:opacity .2s ease}.sidebar-backdrop.open{opacity:1;pointer-events:auto}.sidebar-toggle{display:inline-flex;align-items:center;justify-content:center;position:fixed;right:16px;bottom:calc(76px + env(safe-area-inset-bottom,0px));z-index:900;width:48px;height:48px;border:none;border-radius:var(--radius-pill);background:var(--primary);color:var(--on-primary);cursor:pointer;box-shadow:var(--shadow-1)}.sidebar-toggle.open{top:8px;right:10px;bottom:auto;z-index:970;width:38px;height:38px;background:var(--bg-card);color:var(--text-main);border:1px solid var(--border);box-shadow:none}.sidebar-toggle .material-symbols-outlined{font-size:22px}.edit-modal-body{flex-direction:column;gap:12px}.edit-modal-preview{min-height:160px}.edit-modal-controls{width:100%;max-height:none}.panel-toolbar .control-group,.panel-toolbar .row>.control-group{width:100%!important;min-width:0}.panel-toolbar input[type=range],.panel-toolbar .control-group input{min-width:0;width:100%}}@media(max-width:480px){.panel-toolbar{padding:10px;gap:6px}.panel-toolbar .btn{padding:7px 10px;font-size:.78rem}.empty-state{gap:24px;padding:24px 12px}.empty-drop-zone{padding:28px 20px}.empty-features{gap:4px 0}.frame-grid-scroll{padding:12px}}