:root{--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif;--color-bg: #0A0C0B;--color-surface: #131815;--gradient-primary: linear-gradient(135deg, #3DD68C 0%, #00EDA0 100%);--gradient-bg: radial-gradient(circle at 50% 0%, rgba(61, 214, 140, .1), transparent 60%);--gradient-text: linear-gradient(to right, #3DD68C, #00EDA0);--color-primary: #3DD68C;--color-primary-hover: #2db374;--color-text: #E8F5E9;--color-text-secondary: #AAB7AD;--color-border: rgba(61, 214, 140, .15);--glass-bg: rgba(19, 24, 21, .6);--glass-border: rgba(61, 214, 140, .1);--glass-shadow: 0 4px 24px rgba(0, 0, 0, .6);--backdrop-blur: blur(16px);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1.25rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-full: 9999px}:root[data-theme=light]{--color-bg: #FAFAF8;--color-surface: #FFFFFF;--gradient-bg: radial-gradient(circle at 50% 0%, rgba(26, 60, 30, .03), transparent 60%);--gradient-text: linear-gradient(to right, #1A3C1E, #3A5C3E);--color-primary: #1A3C1E;--color-primary-hover: #122A15;--color-text: #1A1A1A;--color-text-secondary: #5A5A5A;--color-border: rgba(0, 0, 0, .08);--glass-bg: rgba(255, 255, 255, .9);--glass-border: rgba(0, 0, 0, .05);--glass-shadow: 0 4px 12px rgba(0, 0, 0, .03)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);min-height:100vh;display:flex;flex-direction:column;background-image:var(--gradient-bg);background-attachment:fixed}#root{width:100%;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:0}button{cursor:pointer;border:none;font-family:inherit}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}input,select{font-family:inherit}.app-container{width:100%;height:100vh;min-height:100vh;overflow:hidden;display:flex;justify-content:center}.app-content{width:100%;max-width:1600px;min-height:0;display:grid;grid-template-columns:400px minmax(0,1fr);grid-template-rows:minmax(0,1fr);align-items:stretch}.left-panel{min-height:0;overflow-y:auto;padding:var(--spacing-lg);border-right:1px solid var(--color-border);display:flex;flex-direction:column;gap:var(--spacing-lg)}.right-panel{min-height:0;overflow:hidden;padding:var(--spacing-lg);display:flex;align-items:stretch;justify-content:center;background:radial-gradient(circle at 50% 50%,rgba(61,214,140,.05) 0%,transparent 70%)}:root[data-theme=light] .right-panel{background:transparent}.app-header{text-align:left}.header-row{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--spacing-md)}.app-header h1{margin-bottom:var(--spacing-xs)}.input-section{display:flex;flex-direction:column;gap:var(--spacing-md)}.upload-message{color:var(--color-text-secondary);font-size:.875rem}.empty-state{color:var(--color-text-secondary);font-size:1.2rem;text-align:center;align-self:center}.app-footer{margin-top:auto;padding-top:var(--spacing-md);margin-bottom:var(--spacing-md);text-align:center;color:var(--color-text-secondary);font-size:.8rem}@media(max-width:900px){.app-container{height:auto;min-height:100vh;overflow:visible}.app-content{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(420px,80vh)}.left-panel{min-height:auto;border-right:none;border-bottom:1px solid var(--color-border)}.right-panel{height:min(600px,80vh);min-height:420px}}@media(max-width:480px){.left-panel,.right-panel{padding:var(--spacing-md)}.app-header h1{font-size:1.65rem}}.uploader-container{width:100%;height:auto;aspect-ratio:1 / 1;border:1px dashed var(--color-border);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;background:var(--glass-bg);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease;cursor:pointer;position:relative;overflow:hidden}.uploader-input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.uploader-container:focus-within{outline:2px solid var(--color-primary);outline-offset:3px}.uploader-container:hover{border-color:var(--color-primary);background:#3dd68c0d;box-shadow:0 0 20px #3dd68c1a}.uploader-container.dragging{border-color:var(--color-primary);background:#3dd68c1a;transform:scale(1.01);box-shadow:0 0 30px #3dd68c33}:root[data-theme=light] .uploader-container:hover{background:#1a3c1e08;box-shadow:0 0 20px #1a3c1e0d}:root[data-theme=light] .uploader-container.dragging{background:#1a3c1e14;box-shadow:0 0 30px #1a3c1e1a}.uploader-content{display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--spacing-xs);pointer-events:none}.icon-wrapper{color:var(--color-primary);margin-bottom:var(--spacing-xs)}.uploader-content h2{font-size:1.25rem;font-weight:600;color:var(--color-text)}.uploader-content p{color:var(--color-text-secondary);font-size:.9rem}.sub-text{font-size:.8rem;color:var(--color-text-secondary);opacity:.7;margin-top:var(--spacing-xs)}.preview-container{width:100%;display:flex;flex-direction:column;gap:var(--spacing-sm)}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.header-left{display:flex;flex-direction:column}.preview-header h2{font-size:1.1rem;font-weight:600;margin-bottom:var(--spacing-xs)}.preview-header p{font-size:.8rem;color:var(--color-text-secondary)}.reset-btn{padding:6px 12px;font-size:.85rem;color:var(--color-text-secondary);background:#ffffff0d;border:1px solid var(--color-border);border-radius:var(--radius-sm);transition:background-color .2s ease,color .2s ease,border-color .2s ease}.reset-btn:hover{background:#ef44441a;color:#ef4444;border-color:#ef44444d}.preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:var(--spacing-sm)}.preview-item{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px}.image-wrapper{width:100%;aspect-ratio:1;height:auto;border-radius:var(--radius-sm);overflow:hidden;position:relative;border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);background:#0003}.image-wrapper img{width:100%;height:100%;object-fit:cover}.remove-btn{position:absolute;top:4px;right:4px;width:24px;height:24px;border-radius:50%;background:#0009;color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s ease,background-color .2s ease}.remove-btn:hover{background:#ef4444}.image-wrapper:hover .remove-btn{opacity:1}.preview-item:focus-within .remove-btn{opacity:1}.preview-item-footer{width:100%;display:flex;align-items:center;justify-content:center;gap:6px}.image-index{font-size:.8rem;color:var(--color-text-secondary);font-weight:500}.drag-handle{width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:var(--color-text-secondary);background:#ffffff0d;border:1px solid var(--color-border);cursor:grab}.drag-handle:active{cursor:grabbing}@media(hover:none){.remove-btn{opacity:1}}.stitch-container{width:100%;height:100%;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:var(--spacing-md);justify-items:center}.controls-header,.actions{width:min(100%,600px)}.setting-group{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.toggle-group{display:flex;background:#00000080;padding:4px;border-radius:var(--radius-md)}:root[data-theme=light] .toggle-group{background:#ffffffe6}.toggle-group button{padding:6px 16px;border-radius:var(--radius-sm);background:transparent;color:var(--color-text-secondary);font-size:.9rem;transition:background-color .2s ease,color .2s ease,box-shadow .2s ease}.toggle-group button.active{background:var(--color-primary);color:#fff;box-shadow:0 2px 4px #0000001a}.toggle-group button:hover:not(.active){color:var(--color-text);background:#ffffff0d}.wave-control{display:flex;align-items:center;gap:8px;color:var(--color-text-secondary);font-size:.9rem;font-weight:500;background:#00000080;padding:4px 12px;border-radius:var(--radius-md);min-height:32px;cursor:pointer;-webkit-user-select:none;user-select:none}:root[data-theme=light] .wave-control{background:#ffffffe6}.wave-control input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-primary);cursor:pointer;margin:0}.canvas-wrapper{width:min(100%,600px);height:100%;min-height:0;max-height:600px;display:flex;justify-content:center;align-items:center;overflow:hidden;background:#ffffff0d;border-radius:var(--radius-lg);padding:var(--spacing-md);position:relative}:root[data-theme=light] .canvas-wrapper{background:#00000008;border:1px solid var(--glass-border)}.hidden-canvas{display:none}.result-image{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}.loading,.canvas-error{color:var(--color-text-secondary);text-align:center}.canvas-error{display:grid;gap:var(--spacing-sm);justify-items:center}.canvas-error button{padding:6px 12px;border-radius:var(--radius-sm);background:var(--color-primary);color:#fff}.actions{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.action-btn{flex:1 1 120px;min-width:0;white-space:nowrap;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-full);font-weight:600;font-size:1rem;transition:background-color .2s ease,box-shadow .2s ease,transform .2s ease;border:1px solid transparent;display:flex;align-items:center;justify-content:center;gap:8px}.action-btn.primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px #6366f166}.action-btn.primary:hover{box-shadow:0 8px 25px #6366f180}:root[data-theme=light] .action-btn.primary{background:var(--color-primary);box-shadow:none}:root[data-theme=light] .action-btn.primary:hover{background:var(--color-primary-hover)}.action-btn.secondary{background:#ffffff1a;color:var(--color-text);border-color:var(--glass-border)}.action-btn.secondary:hover{background:#fff3}:root[data-theme=light] .action-btn.secondary:hover{background:#0000000d}.action-btn.secondary.copied{background:#15803d;color:#fff;border-color:#15803d}.action-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}@media(max-width:480px){.setting-group{align-items:flex-start}.toggle-group button{padding-inline:12px}}.theme-switcher{background:transparent;border:1px solid var(--color-border);color:var(--color-primary);padding:8px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease;width:40px;height:40px}.theme-switcher:hover{background:var(--glass-bg);color:var(--color-text);border-color:var(--color-text-secondary)}:root[data-theme=light] .theme-switcher{border-color:var(--color-primary);color:var(--color-primary);background:#1a3c1e0d}:root[data-theme=light] .theme-switcher:hover{background:var(--color-primary);color:#fff}.theme-switcher svg{width:20px;height:20px}