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.12s}.use-case-card:hover{background-color:var(--bg-muted)}.use-case-card.active{background-color:var(--bg-muted);border-color:var(--fg)}.use-case-label{font-size:.825rem;font-weight:500}.use-case-meta{font-family:var(--font-mono);font-size:.7rem;color:var(--fg-subtle)}.custom-grid-form{display:flex;flex-direction:column;gap:.875rem}.custom-grid-fields{display:flex;align-items:flex-end;gap:.5rem}.custom-grid-field{display:flex;flex-direction:column;flex:1;gap:.25rem}.custom-grid-field span{font-size:.7rem;color:var(--fg-muted);font-weight:500;text-transform:uppercase;letter-spacing:.04em}.custom-grid-field input{width:100%;padding:.5rem .625rem;font-family:var(--font-mono);font-size:.875rem;text-align:center;background-color:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--fg)}.custom-grid-field input:focus{outline:none;border-color:var(--fg);box-shadow:0 0 0 3px var(--accent-ring)}.custom-grid-x{padding:0 .25rem .5rem;font-size:.95rem;color:var(--fg-subtle)}#custom-apply-btn{background-color:var(--accent);color:var(--fg-on-accent);border-color:var(--accent)}#custom-apply-btn:hover{background-color:var(--accent-hover)}.custom-grid-hint{font-size:.7rem;color:var(--fg-subtle);line-height:1.45}.layout-thumbnail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.625rem}.layout-thumbnail{border-radius:var(--radius-sm);background-color:var(--bg-muted);border:1px solid transparent;cursor:pointer;transition:border-color .15s,background-color .15s;padding:4px}.layout-thumbnail:hover{border-color:var(--border-strong)}.layout-thumbnail.active{border-color:var(--fg);background-color:var(--bg-surface)}.thumbnail-grid{display:grid;width:100%;aspect-ratio:1 / 1;gap:3px}.thumbnail-cell{background-color:var(--border-strong);border-radius:1px}.layout-thumbnail.active .thumbnail-cell{background-color:var(--fg)}#aspect-ratio-btns button,#stitching-direction-btns 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var(--bg-surface);border-radius:50%;box-shadow:var(--shadow-sm);cursor:pointer}label{font-size:.8rem;font-weight:500;color:var(--fg-muted);text-align:left}input[type=color]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:36px;border-radius:var(--radius-sm);border:1px solid var(--border);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-xs);border:none}input[type=number]{font-family:var(--font-mono);font-feature-settings:"tnum"}.action-button{font-size:.825rem;font-weight:500;padding:.5rem .875rem;border-radius:var(--radius-sm);transition:all .15s ease-out;border:1px solid transparent;text-align:center;cursor:pointer}.action-button:active{transform:translateY(0)}.action-button.danger{background-color:var(--danger);color:var(--fg-on-accent)}.action-button.danger:hover{background-color:#b91c1c}.action-button:disabled,#shuffle-btn.disabled{background:var(--bg-muted)!important;color:var(--fg-subtle)!important;border-color:var(--border)!important;transform:none!important;box-shadow:none!important;cursor:not-allowed}#shuffle-btn,.action-button.secondary{background-color:var(--bg-surface);color:var(--fg);border:1px solid var(--border)}#shuffle-btn:hover:not(:disabled),.action-button.secondary:hover{background-color:var(--bg-muted);border-color:var(--border-strong)}#center-content{display:flex;flex-direction:column;position:relative}#canvas-stage{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;position:relative;min-height:0}#layout-wrapper,#stitching-wrapper,#auto-wrapper,#shape-wrapper{position:relative}#status-bar{flex:0 0 auto;display:flex;align-items:center;gap:12px;height:32px;padding:0 12px;font-size:.7rem;color:var(--fg-subtle);background-color:transparent;-webkit-user-select:none;-moz-user-select:none;user-select:none}.status-stats{display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;font-family:var(--font-mono)}.status-hint{flex:1 1 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6px);right:0;left:auto}.rail-tools{display:flex;flex-direction:column;gap:.5rem;padding-bottom:1rem;margin-bottom:1rem;border-bottom:1px solid var(--border)}.rail-tools-label{font-size:.7rem;font-weight:500;color:var(--fg-subtle);text-transform:uppercase;letter-spacing:.06em}.rail-tools-group{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;background-color:var(--bg-muted);padding:3px;border-radius:var(--radius-sm)}.tool-btn{display:inline-flex;align-items:center;justify-content:center;height:34px;background-color:transparent;color:var(--fg-muted);border:none;border-radius:var(--radius-xs);cursor:pointer;transition:background-color .12s,color .12s}.tool-btn:hover:not(:disabled){background-color:var(--bg-surface);color:var(--fg);box-shadow:var(--shadow-sm)}.rail-shuffle,.rail-clear{display:flex;align-items:center;justify-content:center;gap:6px;font-size:.78rem;width:100%}body.stitching-mode .rail-tools .rail-shuffle{display:none}.inspector-panel{display:block}.inspector-panel.hidden{display:none}.border-input{width:100%;padding:.4rem .5rem;font-family:var(--font-mono);font-size:.825rem;text-align:center;background-color:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--fg)}.border-input:focus{outline:none;border-color:var(--fg);box-shadow:0 0 0 3px var(--accent-ring)}.action-button.mb-3{margin-bottom:.75rem}.action-button.icon-only{display:inline-flex;align-items:center;justify-content:center;padding:.5rem}.transform-label{font-size:.75rem;color:var(--fg-muted);font-weight:500}.bg-color-row{display:flex;align-items:center;gap:.5rem}.bg-color-row input[type=color]{width:44px;height:36px;flex:0 0 auto}.bg-color-hex{flex:1;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em}.custom-ratio{display:flex;flex-direction:column;gap:.4rem}.custom-ratio-label{font-size:.7rem;font-weight:500;color:var(--fg-subtle);text-transform:uppercase;letter-spacing:.06em}.custom-ratio-fields{display:flex;align-items:center;gap:.5rem}.custom-ratio-fields .border-input{flex:1;min-width:0}.custom-ratio-sep{font-size:.95rem;font-weight:500;color:var(--fg-subtle)}.export-size{display:flex;flex-direction:column;gap:.4rem;margin-top:.85rem}.export-size-label{font-size:.7rem;font-weight:500;color:var(--fg-subtle);text-transform:uppercase;letter-spacing:.06em}.export-size-row{display:flex;align-items:center;gap:.4rem}.export-size-row .border-input{flex:1;min-width:0}.export-size-suffix{font-size:.78rem;color:var(--fg-muted)}.export-size-hint{margin:0;font-size:.7rem;color:var(--fg-muted);line-height:1.35}.collage-wrapper{background-color:var(--bg-canvas);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}.grid-cell{background-color:#e7e7ea;position:relative;overflow:hidden;cursor:pointer;border-radius:var(--radius-xs);display:flex;align-items:center;justify-content:center;touch-action:none}.cell-bg{position:absolute;top:0;right:0;bottom:0;left:0;background-size:cover;background-position:center;background-repeat:no-repeat;transform-origin:center;pointer-events:none;transition:transform .18s ease}.grid-cell.has-image{cursor:grab}.grid-cell.has-image.is-panning{cursor:grabbing}.grid-cell.dragging{opacity:.4;border:2px dashed var(--accent)}.grid-cell.drag-over{box-shadow:inset 0 0 0 2px var(--accent)}.grid-cell.selected{outline:2px solid var(--accent);outline-offset:-2px;box-shadow:0 0 0 4px var(--accent-ring)}.grid-cell .hidden-file-input{display:none}.cell-button-container{position:absolute;top:5px;right:5px;display:flex;gap:5px;z-index:10}.cell-icon-btn{width:26px;height:26px;background-color:#0a0a0ab3;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;opacity:0;transform:scale(.85);pointer-events:none}.cell-icon-btn svg{width:14px;height:14px}.grid-cell.has-image:hover .cell-icon-btn,.grid-cell.selected .cell-icon-btn{opacity:1;transform:scale(1);pointer-events:auto}.remove-btn{font-size:22px;line-height:26px}.remove-btn:hover{background-color:var(--danger)}.replace-btn:hover{background-color:var(--fg);transform:scale(1.05) rotate(90deg)}.zoom-in-btn:hover,.zoom-out-btn:hover{background-color:var(--fg);transform:scale(1.1)}.reset-btn:hover{background-color:var(--fg);transform:scale(1.05) 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svg{width:100%;height:100%;overflow:visible}.arrow-handle{display:none;position:absolute;width:12px;height:12px;background-color:var(--bg-surface);border:2px solid var(--accent);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 .15s;z-index:5}.shape-container.selected{border-color:var(--accent);z-index:15}.shape-element{width:100%;height:100%;cursor:move}.shape-toolbar{display:none;position:absolute;top:-42px;left:50%;transform:translate(-50%);background:var(--fg);color:#fff;padding:6px 8px;border-radius:var(--radius-sm);box-shadow:var(--shadow-md);align-items:center;gap:8px;z-index:20}.shape-container.selected .shape-toolbar{display:flex}.shape-toolbar input[type=number]{width:56px;background-color:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:3px;border-radius:var(--radius-xs)}.shape-toolbar input[type=color]{width:28px;height:28px;padding:2px;border:none;background:none;border-radius:var(--radius-xs);cursor:pointer}.resize-handle{display:none;position:absolute;width:9px;height:9px;background-color:var(--bg-surface);border:2px solid var(--accent);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:-22px;transform:translate(-50%);width:14px;height:14px;background-color:var(--bg-surface);border:2px solid var(--accent);border-radius:50%;cursor:alias}.rotation-handle:before{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);width:1px;height:12px;background-color:var(--accent)}.arrow-container.selected .rotation-handle{display:block}.toolbar-delete-btn{background:#ffffff1a;color:#fff;width:26px;height:26px;border:none;border-radius:var(--radius-xs);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:background-color .15s}.toolbar-delete-btn:hover{background:var(--danger)}#toast{position:fixed;bottom:20px;right:20px;padding:10px 14px;border-radius:var(--radius-sm);box-shadow:var(--shadow-md);background-color:var(--bg-surface);color:var(--fg);border:1px solid var(--border);font-weight:500;font-size:.825rem;z-index:2000;transform:translateY(150%);opacity:0;transition:transform .3s ease-in-out,opacity .3s ease-in-out}#toast.show{transform:translateY(0);opacity:1}#toast.info{border-left:3px solid var(--info)}#toast.success{border-left:3px solid var(--success)}#toast.error{border-left:3px solid var(--danger)}@media (max-width: 768px){body,body.overflow-hidden{overflow:auto}.pc-sidebar-toggle{display:none}#app-nav{padding:0 10px;gap:6px}.nav-title{display:none}.mobile-nav-btn{display:block}.nav-icon-btn{display:none}#mode-tabs button{padding:.4rem .7rem;font-size:.78rem}#export-trigger{padding:.4rem .6rem;gap:4px}#export-trigger>svg:last-child{display:none}#export-menu{right:-8px;min-width:180px}#app-container{flex-direction:column;height:auto;padding-top:var(--nav-height)}#center-content{order:1;padding:1rem 1rem 0;min-height:50vh;height:auto;overflow:visible}#canvas-stage{min-height:40vh}#left-sidebar{order:2}#right-sidebar{order:3}#left-sidebar,#right-sidebar{width:100%;max-width:100%;height:auto;max-height:78vh;position:fixed;bottom:0;left:0;right:0;top:auto;z-index:1000;border:1px solid var(--border);border-bottom:none;border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding-top:0;box-shadow:0 -8px 32px #0000001f;transform:translateY(100%);transition:transform .25s ease-in-out;overflow:hidden}#left-sidebar:before,#right-sidebar:before{content:"";display:block;width:36px;height:4px;margin:8px auto 4px;border-radius:2px;background-color:var(--border-strong);flex-shrink:0}#left-sidebar.is-open,#right-sidebar.is-open{transform:translateY(0)}#left-sidebar .sidebar-content-wrapper,#right-sidebar .sidebar-content-wrapper{padding:1rem 1.25rem 1.5rem;max-height:calc(78vh - 16px);overflow-y:auto}#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(72px,1fr))}.action-button{padding:.7rem 1rem}#aspect-ratio-btns{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}#status-bar{font-size:.65rem;padding:0 8px;height:28px;gap:6px}#status-bar .status-hint,.status-help-btn span{display:none}}.hover\:border-zinc-400:hover{--tw-border-opacity: 1;border-color:rgb(161 161 170 / var(--tw-border-opacity, 1))}.hover\:text-zinc-700:hover{--tw-text-opacity: 1;color:rgb(63 63 70 / var(--tw-text-opacity, 1))}.hover\:text-zinc-950:hover{--tw-text-opacity: 1;color:rgb(9 9 11 / var(--tw-text-opacity, 1))}.hover\:shadow-sm:hover{--tw-shadow: 0 1px 2px 0 rgb(0 0 0 / .05);--tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}@media (min-width: 768px){.md\:flex{display:flex}.md\:hidden{display:none}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:space-x-8>:not([hidden])~:not([hidden]){--tw-space-x-reverse: 0;margin-right:calc(2rem * var(--tw-space-x-reverse));margin-left:calc(2rem * calc(1 - var(--tw-space-x-reverse)))}.md\:text-5xl{font-size:3rem;line-height:1}.md\:text-6xl{font-size:3.75rem;line-height:1}.md\:text-xl{font-size:1.25rem;line-height:1.75rem}}@media (min-width: 1024px){.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.lg\:py-24{padding-top:6rem;padding-bottom:6rem}.lg\:py-32{padding-top:8rem;padding-bottom:8rem}.lg\:py-36{padding-top:9rem;padding-bottom:9rem}.lg\:text-3xl{font-size:1.875rem;line-height:2.25rem}.lg\:text-4xl{font-size:2.25rem;line-height:2.5rem}}