.overflow-hidden{overflow:hidden}.block{display:block}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.mb-2{margin-bottom:.5rem}.mb-4{margin-bottom:1rem}.mb-6{margin-bottom:1.5rem}.border-t{border-top-width:1px}.border-gray-200{--tw-border-opacity: 1;border-color:rgb(229 231 235 / var(--tw-border-opacity))}.pt-4{padding-top:1rem}.mt-4{margin-top:1rem}.w-full{width:100%}.text-center{text-align:center}.p-1{padding:.25rem}.border{border-width:1px;border-style:solid}.rounded{border-radius:.25rem}.font-medium{font-weight:500}.text-sm{font-size:.875rem;line-height:1.25rem}.grid{display:grid}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.gap-2{gap:.5rem}.flex{display:flex}.flex-col{flex-direction:column}.space-y-3>:not([hidden])~:not([hidden]){margin-top:.75rem}.fixed{position:fixed}.bottom-5{bottom:1.25rem}.right-5{right:1.25rem}.text-white{color:#fff}.py-2{padding-top:.5rem;padding-bottom:.5rem}.px-4{padding-left:1rem;padding-right:1rem}.shadow-xl{box-shadow:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a}.translate-x-120{transform:translate(120%)}.transition-transform{transition-property:transform;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.duration-300{transition-duration:.3s}:root{--font-sans: "Inter", "sans-serif";--bg-main: #f4f5f7;--bg-sidebar: #ffffff;--bg-nav: #ffffff;--text-primary: #172b4d;--text-secondary: #42526e;--text-muted: #6b7f99;--border-color: #dfe1e6;--primary-accent: #0052cc;--primary-accent-hover: #0041a3;--nav-height: 60px;--sidebar-width: 320px;--shadow-sm: 0 1px 1px rgba(9, 30, 66, .15);--shadow-md: 0 4px 8px -2px rgba(9, 30, 66, .25), 0 0 1px rgba(9, 30, 66, .31);--radius-sm: 3px;--radius-md: 6px}*,*:before,*:after{box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-secondary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body.overflow-hidden{overflow:hidden}input[type=file]{display:none}.hidden{display:none!important}#app-nav{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);padding:0 24px;background-color:var(--bg-nav);width:100%;position:fixed;top:0;left:0;z-index:1001;box-shadow:var(--shadow-sm)}.nav-title{font-size:1.25rem;font-weight:600;color:var(--text-primary)}.nav-title a{color:var(--text-primary);text-decoration:none}.nav-links{display:flex;gap:28px}.nav-links a{font-size:.9rem;font-weight:500;color:var(--text-secondary);text-decoration:none;transition:color .2s ease}.nav-links a:hover{color:var(--primary-accent)}#app-container{display:flex;height:100vh;padding-top:var(--nav-height);position:relative;overflow-x:hidden}#left-sidebar,#right-sidebar{width:var(--sidebar-width);flex-shrink:0;background-color:var(--bg-sidebar);position:relative;transition:all .3s ease-in-out;height:calc(100vh - var(--nav-height));display:flex;flex-direction:column}#left-sidebar{border-right:1px solid var(--border-color)}#right-sidebar{border-left:1px solid var(--border-color)}#center-content{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:2rem;height:calc(100vh - var(--nav-height));overflow:auto}.collage-wrapper{background-color:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-md)}#layout-wrapper{display:flex;width:100%;max-height:100%}#layout-grid{flex:1;display:grid;position:relative}#stitching-wrapper{display:inline-block;width:auto;height:auto;max-width:100%;max-height:100%;overflow:auto}#stitching-grid{display:inline-flex;width:auto;height:auto}#stitching-grid.horizontal{flex-direction:row;align-items:flex-start}#stitching-grid.vertical{flex-direction:column;align-items:center}#stitching-grid.horizontal img{height:400px;width:auto}#stitching-grid.vertical img{width:600px;height:auto}#stitching-grid.is-sortable>img:hover{cursor:grab}#stitching-grid>img.dragging{opacity:.5;cursor:grabbing;transform:scale(1.03);box-shadow:0 10px 20px #0003}.stitched-image-container{position:relative;display:block;line-height:0}.delete-stitched-image-btn,.add-stitched-image-btn{position:absolute;top:10px;z-index:10;width:28px;height:28px;color:#fff;border:none;border-radius:50%;font-size:22px;font-weight:700;line-height:26px;text-align:center;cursor:pointer;opacity:0;transition:opacity .2s ease-in-out,transform .2s ease-in-out;transform:scale(.8)}.stitched-image-container:hover .delete-stitched-image-btn,.stitched-image-container:hover .add-stitched-image-btn{opacity:1;transform:scale(1)}.delete-stitched-image-btn{right:10px;background-color:#0009}.delete-stitched-image-btn:hover{background-color:#ff0000b3}.add-stitched-image-btn{right:48px;background-color:#008000b3;font-size:24px;line-height:25px}.add-stitched-image-btn:hover{background-color:#009600e6}.stitched-image-container.drag-over{opacity:.5;transition:opacity .2s ease-in-out}.grid-cell.dragging{opacity:.4;border:2px dashed var(--primary-accent)}#mode-switcher{display:flex;border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;margin-bottom:1.5rem}#mode-switcher button{flex:1;padding:.625rem 0;font-weight:500;font-size:.9rem;background-color:var(--bg-sidebar);color:var(--text-secondary);border:none;cursor:pointer;transition:background-color .2s,color .2s}#mode-switcher button:first-child{border-right:1px solid var(--border-color)}#mode-switcher button.active{background-color:var(--primary-accent);color:#fff}.panel{background-color:transparent;border:none;box-shadow:none;padding:0}.panel-section-title{font-weight:600;color:var(--text-primary);margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.layout-group-title{font-weight:600;color:var(--text-secondary);margin-top:1.5rem;margin-bottom:.75rem;padding-bottom:0;border-bottom:none;font-size:.875rem}.layout-thumbnail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem}.layout-thumbnail{border-radius:var(--radius-sm);background-color:#fafbfc;border:1px solid transparent;cursor:pointer}.layout-thumbnail:hover{border-color:#c1c7d0}.layout-thumbnail.active{border-color:var(--primary-accent)}.thumbnail-grid{display:grid;width:100%;aspect-ratio:1 / 1;gap:3px}.thumbnail-cell{background-color:#b3d4ff;border-radius:1px}.layout-thumbnail.active .thumbnail-cell{background-color:var(--primary-accent)}#aspect-ratio-btns button,#stitching-direction-btns button{padding:.5rem;background-color:#fafbfc;border-radius:var(--radius-sm);border:1px solid var(--border-color);font-weight:500;color:var(--text-secondary);transition:all .2s ease;cursor:pointer}#aspect-ratio-btns button:hover,#stitching-direction-btns button:hover{background-color:#f4f5f7}#aspect-ratio-btns button.active,#stitching-direction-btns button.active{background-color:#e9f2ff;color:var(--primary-accent);border-color:var(--primary-accent);font-weight:600}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;background:#dfe1e6;border-radius:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;background:var(--primary-accent);border:2px solid white;border-radius:50%;box-shadow:var(--shadow-sm);cursor:pointer}input[type=range]::-moz-range-thumb{width:16px;height:16px;background:var(--primary-accent);border:2px solid white;border-radius:50%;box-shadow:var(--shadow-sm);cursor:pointer}label{font-size:.875rem;font-weight:500;color:var(--text-secondary);text-align:left}input[type=color]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:38px;border-radius:var(--radius-sm);border:1px solid var(--border-color);padding:0;background-color:transparent;cursor:pointer}input[type=color]::-webkit-color-swatch-wrapper{padding:4px}input[type=color]::-webkit-color-swatch{border-radius:var(--radius-sm);border:none}.action-button{font-size:.875rem;font-weight:500;padding:.625rem 1rem;border-radius:var(--radius-sm);transition:all .2s ease-out;border:1px solid transparent;text-align:center}.action-button:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.action-button:active{transform:translateY(0);box-shadow:none}#download-btn{background-color:var(--primary-accent);color:#fff}#download-btn:hover{background-color:var(--primary-accent-hover)}#shuffle-btn,.action-button.secondary{background-color:#fafbfc;color:var(--text-secondary);border:1px solid var(--border-color)}#shuffle-btn:hover:not(:disabled),.action-button.secondary:hover{background-color:#f4f5f7;border-color:#c1c7d0}.action-button:disabled,#shuffle-btn.disabled{background:#fafbfc!important;color:#a5adba!important;border-color:var(--border-color)!important;transform:none!important;box-shadow:none!important;cursor:not-allowed}.grid-cell{background-color:#f4f5f7;background-size:cover;background-position:center;background-repeat:no-repeat;position:relative;overflow:hidden;cursor:pointer;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;touch-action:none}.grid-cell.drag-over{box-shadow:inset 0 0 0 2px var(--primary-accent)}.grid-cell .hidden-file-input{display:none}.grid-cell.selected{outline:3px solid #007BFF;outline-offset:-3px;box-shadow:0 0 15px #007bff80}.cell-button-container{position:absolute;top:5px;right:5px;display:flex;gap:5px;z-index:10}.cell-icon-btn{width:28px;height:28px;background-color:#0009;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;opacity:0;transform:scale(.8);pointer-events:none}.remove-btn{font-size:24px;line-height:28px}.cell-icon-btn svg{width:16px;height:16px}.grid-cell.has-image:hover .cell-icon-btn,.grid-cell.selected .cell-icon-btn{opacity:1;transform:scale(1);pointer-events:auto}.remove-btn:hover{background-color:#e53e3e}.replace-btn:hover{background-color:#007bff;transform:scale(1.1) rotate(90deg)}.zoom-in-btn:hover,.zoom-out-btn:hover{background-color:#28a745;transform:scale(1.2)}.reset-btn:hover{background-color:#ffc107;transform:scale(1.1) rotate(360deg)}.upload-icon-container{display:flex;align-items:center;justify-content:center;width:100%;height:100%}.upload-icon{width:32px;height:32px;color:var(--primary-accent);opacity:.6}.gutter{position:absolute;background:transparent;z-index:20;transition:background-color .2s ease}.gutter-h{cursor:ns-resize;height:10px;transform:translateY(-5px)}.gutter-v{cursor:ew-resize;width:10px;transform:translate(-5px)}.gutter:hover{background:#39f6}#toast{position:fixed;bottom:20px;right:20px;padding:12px 20px;border-radius:var(--radius-md);box-shadow:var(--shadow-md);color:#fff;font-weight:500;z-index:2000;transform:translateY(150%);opacity:0;transition:transform .4s ease-in-out,opacity .4s ease-in-out}#toast.show{transform:translateY(0);opacity:1}#toast.info{background-color:#263238}#toast.success{background-color:#28a745}#toast.error{background-color:#dc3545}#canvas-action-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;padding:8px;background-color:#f8f9fa;border-radius:12px;border:1px solid #dee2e6;box-shadow:0 2px 4px #0000000d}#canvas-action-toolbar .action-button{display:flex;align-items:center;gap:8px;padding:8px 16px;font-size:14px;font-weight:500}.toolbar-group-left{display:flex;align-items:center;gap:12px}body.stitching-mode #canvas-action-toolbar #shuffle-btn{display:none}#stitching-placeholder{display:flex;flex-direction:column;justify-content:center;align-items:center;width:250px;height:150px;border:2px dashed var(--border-color);border-radius:var(--radius-md);color:var(--text-muted);cursor:pointer;transition:background-color .2s,border-color .2s;margin:2rem}#stitching-placeholder:hover{background-color:#fafbfc;border-color:var(--primary-accent)}#stitching-placeholder span{margin-top:.5rem;font-weight:500}#stitching-placeholder.hidden{display:none}#canvas-hint{position:absolute;bottom:1.5rem;left:50%;transform:translate(-50%);background-color:#172b4dcc;color:#fff;padding:.5rem 1rem;border-radius:var(--radius-md);font-size:.8rem;white-space:nowrap;opacity:0;transform:translate(-50%,10px);transition:opacity .3s ease,transform .3s ease;pointer-events:none;z-index:200}#layout-wrapper:hover~#canvas-hint{opacity:1;transform:translate(-50%)}#quality-selector .action-button.active{background-color:#e9f2ff;color:var(--primary-accent);border-color:var(--primary-accent);font-weight:600;box-shadow:inset 0 1px 2px #0000001a}@media (max-width: 768px){#canvas-hint{display:none}}.text-element-container{position:absolute;transform:translate(-50%,-50%);padding:10px;border:2px dashed transparent;transition:border-color .2s ease}.text-element-container:hover{border-color:#0ea5e980}.text-element-container.selected{border-color:#0ea5e9;z-index:10}.text-content{cursor:move;padding:8px 12px;white-space:pre-wrap;outline:none;font-weight:700;text-shadow:1px 1px 2px rgba(0,0,0,.5)}.text-content:focus{cursor:text}.text-toolbar,.delete-text-button{display:none}.text-element-container.selected .text-toolbar,.text-element-container.selected .delete-text-button{display:flex}.text-toolbar{position:absolute;bottom:100%;left:50%;transform:translate(-50%);margin-bottom:8px;background:#2d3748;color:#fff;padding:8px;border-radius:6px;box-shadow:0 4px 12px #0000004d;align-items:center;gap:10px;z-index:20}.text-toolbar input[type=number]{width:60px;background-color:#4a5568;border:1px solid #718096;color:#fff;padding:4px;border-radius:4px}.text-toolbar input[type=color]{width:32px;height:32px;padding:2px;border:none;background:none;border-radius:4px;cursor:pointer}.delete-text-button{position:absolute;top:-10px;right:-10px;width:24px;height:24px;background:#ef4444;color:#fff;border:2px solid white;border-radius:50%;cursor:pointer;font-family:sans-serif;font-weight:700;align-items:center;justify-content:center;line-height:1;z-index:20}.arrow-container{position:absolute;cursor:move;z-index:5}.arrow-container.selected{z-index:15}.arrow-container svg{width:100%;height:100%;overflow:visible}.arrow-handle{display:none;position:absolute;width:14px;height:14px;background-color:#fff;border:2px solid #0ea5e9;border-radius:50%;cursor:pointer;transform:translate(-50%,-50%)}.arrow-container.selected .arrow-handle{display:block}.arrow-container .text-toolbar,.arrow-container .delete-text-button{display:none}.arrow-container.selected .text-toolbar,.arrow-container.selected .delete-text-button{display:flex}.shape-container{position:absolute;border:1px dashed transparent;transition:border-color .2s;z-index:5}.shape-container.selected{border-color:#0ea5e9;z-index:15}.shape-element{width:100%;height:100%;cursor:move}.shape-toolbar{display:none;position:absolute;top:-45px;left:50%;transform:translate(-50%);background:#2d3748;color:#fff;padding:8px;border-radius:6px;box-shadow:0 4px 12px #0000004d;align-items:center;gap:10px;z-index:20}.shape-container.selected .shape-toolbar{display:flex}.shape-toolbar input[type=number]{width:60px;background-color:#4a5568;border:1px solid #718096;color:#fff;padding:4px;border-radius:4px}.shape-toolbar input[type=color]{width:32px;height:32px;padding:2px;border:none;background:none;border-radius:4px;cursor:pointer}.resize-handle{display:none;position:absolute;width:10px;height:10px;background-color:#fff;border:2px solid #007bff;border-radius:50%;transform:translate(-50%,-50%);z-index:25}.shape-container.selected .resize-handle{display:block}.resize-handle.n{top:0;left:50%;cursor:ns-resize}.resize-handle.ne{top:0;right:0;transform:translate(50%,-50%);cursor:nesw-resize}.resize-handle.e{top:50%;right:0;transform:translate(50%,-50%);cursor:ew-resize}.resize-handle.se{bottom:0;right:0;transform:translate(50%,50%);cursor:nwse-resize}.resize-handle.s{bottom:0;left:50%;transform:translate(-50%,50%);cursor:ns-resize}.resize-handle.sw{bottom:0;left:0;transform:translate(-50%,50%);cursor:nesw-resize}.resize-handle.w{top:50%;left:0;transform:translate(-50%,-50%);cursor:ew-resize}.resize-handle.nw{top:0;left:0;cursor:nwse-resize}.rotation-handle{display:none;position:absolute;left:50%;top:-25px;transform:translate(-50%);width:16px;height:16px;background-color:#f59e0b;border:2px solid white;border-radius:50%;cursor:alias}.rotation-handle:before{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);width:2px;height:15px;background-color:#f59e0b}.arrow-container.selected .rotation-handle{display:block}.toolbar-delete-btn{background:#ef4444;color:#fff;width:28px;height:28px;border:none;border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;transition:background-color .2s}.toolbar-delete-btn:hover{background:#dc2626}.action-button.danger{background-color:#ef4444;color:#fff}.action-button.danger:hover{background-color:#dc2626}.mobile-nav-btn{display:none;background:none;border:none;padding:4px;color:var(--text-primary);cursor:pointer}#mobile-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#091e4280;z-index:999;transition:opacity .3s ease}#mobile-overlay.hidden{opacity:0;pointer-events:none}body.sidebar-open{overflow:hidden}.sidebar-content-wrapper{width:100%;padding:1.5rem;overflow-y:auto;flex:1;min-height:0}#left-sidebar,#right-sidebar,#pc-toggle-left,#pc-toggle-right{transition:all .3s ease-in-out}.pc-sidebar-toggle{position:absolute;top:50%;transform:translateY(-50%);width:24px;height:48px;background-color:var(--bg-sidebar);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:50;color:var(--text-muted)}.pc-sidebar-toggle:hover{background-color:var(--primary-accent);color:#fff;border-color:var(--primary-accent)}#pc-toggle-left{left:calc(var(--sidebar-width) - 2px);border-radius:0 6px 6px 0}#pc-toggle-right{right:calc(var(--sidebar-width) - 2px);border-radius:6px 0 0 6px}#app-container.left-sidebar-collapsed #left-sidebar{margin-left:calc(-1 * var(--sidebar-width))}#app-container.left-sidebar-collapsed #pc-toggle-left{left:-2px}#app-container.left-sidebar-collapsed #pc-toggle-left svg{transform:scaleX(-1)}#app-container.right-sidebar-collapsed #right-sidebar{margin-right:calc(-1 * var(--sidebar-width))}#app-container.right-sidebar-collapsed #pc-toggle-right{right:-2px}#app-container.right-sidebar-collapsed #pc-toggle-right svg{transform:scaleX(-1)}.grid-cell.has-image{cursor:grab}.grid-cell.has-image.is-panning{cursor:grabbing}@media (max-width: 768px){body,body.overflow-hidden{overflow:auto}.pc-sidebar-toggle{display:none}#app-nav{padding:0 16px;justify-content:space-between}.nav-title{font-size:1.1rem;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);max-width:calc(100% - 120px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-links{display:none}.mobile-nav-btn{display:block}#app-container{flex-direction:column;height:auto;padding-top:var(--nav-height)}#center-content{order:1;padding:1rem;min-height:50vh;height:auto}#left-sidebar{order:2}#right-sidebar{order:3}#left-sidebar,#right-sidebar{width:280px;height:100%;position:fixed;top:0;left:0;z-index:1000;border:none;padding-top:var(--nav-height);box-shadow:var(--shadow-md);transform:translate(-100%);transition:transform .3s ease-in-out}#right-sidebar{left:auto;right:0;transform:translate(100%)}#left-sidebar.is-open,#right-sidebar.is-open{transform:translate(0)}#stitching-grid.vertical img{width:100%;height:auto}#stitching-grid.horizontal img{height:200px;width:auto}.layout-thumbnail-grid{grid-template-columns:repeat(auto-fill,minmax(65px,1fr))}.action-button,#mode-switcher button{padding:.8rem 1rem}#aspect-ratio-btns{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}#canvas-action-toolbar .action-button span{display:none}#canvas-action-toolbar .action-button{padding:10px;justify-content:center;gap:0}}