:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-card: rgba(255, 255, 255, .04);--bg-card-hover: rgba(255, 255, 255, .07);--bg-glass: rgba(255, 255, 255, .06);--border-subtle: rgba(255, 255, 255, .08);--border-active: rgba(99, 102, 241, .5);--text-primary: #f0f0f5;--text-secondary: #8b8b9e;--text-muted: #5a5a6e;--accent-primary: #6366f1;--accent-secondary: #a855f7;--accent-tertiary: #ec4899;--accent-clothchange: #14b8a6;--accent-clothchange-end: #06b6d4;--gradient-primary: linear-gradient(135deg, #6366f1, #a855f7);--gradient-clothchange: linear-gradient(135deg, #14b8a6, #06b6d4);--accent-bgchange: #0ea5e9;--accent-bgchange-end: #3b82f6;--gradient-bgchange: linear-gradient(135deg, #0ea5e9, #3b82f6);--accent-linesketch: #f59e0b;--accent-linesketch-end: #f97316;--gradient-linesketch: linear-gradient(135deg, #f59e0b, #f97316);--gradient-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);--gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(99, 102, 241, .06), transparent 40%);--shadow-card: 0 4px 24px rgba(0, 0, 0, .3);--shadow-glow: 0 0 40px rgba(99, 102, 241, .15);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-2xl: 24px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(99,102,241,.12) 0%,transparent 60%),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(168,85,247,.06) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 20% 80%,rgba(236,72,153,.05) 0%,transparent 50%);pointer-events:none;z-index:0;transition:background .6s ease}body.mode-clothchange:before{background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(20,184,166,.12) 0%,transparent 60%),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(6,182,212,.06) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 20% 80%,rgba(20,184,166,.05) 0%,transparent 50%)}body.mode-bgchange:before{background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(14,165,233,.12) 0%,transparent 60%),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(59,130,246,.06) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 20% 80%,rgba(14,165,233,.05) 0%,transparent 50%)}body.mode-linesketch:before{background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(245,158,11,.12) 0%,transparent 60%),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(249,115,22,.06) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 20% 80%,rgba(245,158,11,.05) 0%,transparent 50%)}#app{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:0 24px}.header{padding:24px 0 16px;border-bottom:1px solid var(--border-subtle);margin-bottom:48px}.header-inner{display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:10px}.logo-icon{display:flex;filter:drop-shadow(0 2px 8px rgba(99,102,241,.3))}.logo-text{font-size:1.25rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.header-tagline{font-size:.8rem;color:var(--text-muted);font-weight:400;letter-spacing:.04em;text-transform:uppercase}.hero{text-align:center;margin-bottom:40px}.hero-title{font-size:clamp(2rem,5vw,3rem);font-weight:800;line-height:1.15;letter-spacing:-.03em;margin-bottom:16px}.hero-highlight{display:block;background:var(--gradient-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:all .4s ease}.hero-subtitle{font-size:1.1rem;color:var(--text-secondary);max-width:540px;margin:0 auto;font-weight:400;line-height:1.7}.mode-section{margin-bottom:40px}.mode-switcher{display:flex;flex-direction:column;gap:12px;max-width:780px;margin:0 auto}.mode-row{display:flex;gap:12px}.mode-row-featured .mode-tab{flex:1}.mode-tab{flex:1;display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--bg-card);border:2px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;font-family:Inter,sans-serif;color:var(--text-secondary);transition:all var(--transition-base);text-align:left;position:relative;overflow:hidden}.mode-tab:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;transition:opacity var(--transition-base);border-radius:inherit}.mode-tab[data-mode=group]:before{background:linear-gradient(135deg,#6366f10f,#a855f70a)}.mode-tab[data-mode=clothchange]:before{background:linear-gradient(135deg,#14b8a60f,#06b6d40a)}.mode-tab[data-mode=bgchange]:before{background:linear-gradient(135deg,#0ea5e90f,#3b82f60a)}.mode-tab[data-mode=linesketch]:before{background:linear-gradient(135deg,#f59e0b0f,#f973160a)}.mode-tab:hover{background:var(--bg-card-hover);border-color:#ffffff1f;transform:translateY(-1px)}.mode-tab.active{color:var(--text-primary);transform:translateY(-2px);box-shadow:0 8px 24px #0003}.mode-tab.active:before{opacity:1}.mode-tab[data-mode=group].active{border-color:#6366f180;box-shadow:0 8px 30px #6366f126}.mode-tab[data-mode=clothchange].active{border-color:#14b8a680;box-shadow:0 8px 30px #14b8a626}.mode-tab[data-mode=bgchange].active{border-color:#0ea5e980;box-shadow:0 8px 30px #0ea5e926}.mode-tab[data-mode=linesketch].active{border-color:#f59e0b80;box-shadow:0 8px 30px #f59e0b26}.mode-tab-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-md);flex-shrink:0;transition:all var(--transition-base)}.mode-tab[data-mode=group] .mode-tab-icon{background:#6366f11f;color:#818cf8}.mode-tab[data-mode=clothchange] .mode-tab-icon{background:#14b8a61f;color:#5eead4}.mode-tab[data-mode=bgchange] .mode-tab-icon{background:#0ea5e91f;color:#7dd3fc}.mode-tab[data-mode=linesketch] .mode-tab-icon{background:#f59e0b1f;color:#fbbf24}.mode-tab[data-mode=group].active .mode-tab-icon{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 12px #6366f14d}.mode-tab[data-mode=clothchange].active .mode-tab-icon{background:var(--gradient-clothchange);color:#fff;box-shadow:0 4px 12px #14b8a64d}.mode-tab[data-mode=bgchange].active .mode-tab-icon{background:var(--gradient-bgchange);color:#fff;box-shadow:0 4px 12px #0ea5e94d}.mode-tab[data-mode=linesketch].active .mode-tab-icon{background:var(--gradient-linesketch);color:#fff;box-shadow:0 4px 12px #f59e0b4d}.mode-tab-text{display:flex;flex-direction:column;gap:2px;position:relative;z-index:1}.mode-tab-title{font-size:.95rem;font-weight:600;letter-spacing:-.01em}.mode-tab-desc{font-size:.72rem;color:var(--text-muted);letter-spacing:.01em}.mode-tab.active .mode-tab-desc{color:var(--text-secondary)}.upload-section{margin-bottom:36px}.upload-grid{display:flex;align-items:center;gap:24px;justify-content:center}.upload-card{position:relative;width:280px;height:340px;border-radius:var(--radius-xl);border:2px dashed var(--border-subtle);background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;overflow:hidden;transition:all var(--transition-base)}.upload-card:hover{border-color:#6366f14d;background:var(--bg-card-hover);transform:translateY(-2px);box-shadow:var(--shadow-glow)}body.mode-clothchange .upload-card:hover{border-color:#14b8a64d;box-shadow:0 0 40px #14b8a626}body.mode-bgchange .upload-card:hover{border-color:#0ea5e94d;box-shadow:0 0 40px #0ea5e926}body.mode-linesketch .upload-card:hover{border-color:#f59e0b4d;box-shadow:0 0 40px #f59e0b26}.upload-card.has-image{border-style:solid;border-color:var(--border-active)}body.mode-clothchange .upload-card.has-image{border-color:#14b8a680}body.mode-bgchange .upload-card.has-image{border-color:#0ea5e980}body.mode-linesketch .upload-card.has-image{border-color:#f59e0b80}.upload-card.drag-over{border-color:var(--accent-primary);background:#6366f114;transform:translateY(-4px) scale(1.02);box-shadow:0 0 60px #6366f133}body.mode-clothchange .upload-card.drag-over{border-color:var(--accent-clothchange);background:#14b8a614;box-shadow:0 0 60px #14b8a633}body.mode-bgchange .upload-card.drag-over{border-color:var(--accent-bgchange);background:#0ea5e914;box-shadow:0 0 60px #0ea5e933}body.mode-linesketch .upload-card.drag-over{border-color:var(--accent-linesketch);background:#f59e0b14;box-shadow:0 0 60px #f59e0b33}.upload-card.disabled-card{opacity:.25;pointer-events:none;filter:grayscale(1);transform:none!important;border-color:var(--border-subtle)!important;box-shadow:none!important}.upload-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:24px;text-align:center}.upload-icon{color:var(--text-muted);margin-bottom:16px;transition:color var(--transition-base),transform var(--transition-base)}.upload-card:hover .upload-icon{color:var(--accent-primary);transform:scale(1.05)}body.mode-clothchange .upload-card:hover .upload-icon{color:var(--accent-clothchange)}body.mode-bgchange .upload-card:hover .upload-icon{color:var(--accent-bgchange)}body.mode-linesketch .upload-card:hover .upload-icon{color:var(--accent-linesketch)}.upload-label{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-bottom:6px;transition:color var(--transition-base)}.upload-hint{font-size:.85rem;color:var(--text-secondary);margin-bottom:4px}.upload-formats{font-size:.72rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;font-weight:500}.upload-preview{position:relative;width:100%;height:100%}.upload-preview img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-xl)}.remove-btn{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);opacity:0}.upload-card:hover .remove-btn{opacity:1}.remove-btn:hover{background:#ef4444cc;transform:scale(1.1)}.preview-label{position:absolute;bottom:12px;left:12px;padding:4px 12px;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:20px;font-size:.75rem;font-weight:500;color:#ffffffe6;letter-spacing:.02em;transition:all var(--transition-base)}.merge-icon-container{display:flex;align-items:center;justify-content:center;flex-shrink:0}.merge-icon{width:56px;height:56px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 20px #6366f14d;animation:pulse-glow 3s ease-in-out infinite;transition:background .4s ease,box-shadow .4s ease}body.mode-clothchange .merge-icon{background:var(--gradient-clothchange);box-shadow:0 4px 20px #14b8a64d}body.mode-bgchange .merge-icon{background:var(--gradient-bgchange);box-shadow:0 4px 20px #0ea5e94d}body.mode-linesketch .merge-icon{background:var(--gradient-linesketch);box-shadow:0 4px 20px #f59e0b4d}@keyframes pulse-glow{0%,to{box-shadow:0 4px 20px #6366f14d}50%{box-shadow:0 4px 40px #6366f180}}body.mode-clothchange .merge-icon{animation:pulse-glow-teal 3s ease-in-out infinite}@keyframes pulse-glow-teal{0%,to{box-shadow:0 4px 20px #14b8a64d}50%{box-shadow:0 4px 40px #14b8a680}}body.mode-bgchange .merge-icon{animation:pulse-glow-blue 3s ease-in-out infinite}@keyframes pulse-glow-blue{0%,to{box-shadow:0 4px 20px #0ea5e94d}50%{box-shadow:0 4px 40px #0ea5e980}}body.mode-linesketch .merge-icon{animation:pulse-glow-amber 3s ease-in-out infinite}@keyframes pulse-glow-amber{0%,to{box-shadow:0 4px 20px #f59e0b4d}50%{box-shadow:0 4px 40px #f59e0b80}}.generate-section{text-align:center;margin-bottom:48px}.generate-btn{position:relative;padding:16px 40px;border:none;border-radius:var(--radius-lg);background:var(--gradient-primary);color:#fff;font-family:Inter,sans-serif;font-size:1rem;font-weight:600;cursor:pointer;letter-spacing:.01em;transition:all var(--transition-base);overflow:hidden}body.mode-clothchange .generate-btn{background:var(--gradient-clothchange)}body.mode-bgchange .generate-btn{background:var(--gradient-bgchange)}body.mode-linesketch .generate-btn{background:var(--gradient-linesketch)}.generate-btn:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent 60%);opacity:0;transition:opacity var(--transition-base)}.generate-btn:hover:not(:disabled):before{opacity:1}.generate-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 32px #6366f166}body.mode-clothchange .generate-btn:hover:not(:disabled){box-shadow:0 8px 32px #14b8a666}body.mode-bgchange .generate-btn:hover:not(:disabled){box-shadow:0 8px 32px #0ea5e966}body.mode-linesketch .generate-btn:hover:not(:disabled){box-shadow:0 8px 32px #f59e0b66}.generate-btn:active:not(:disabled){transform:translateY(0)}.generate-btn:disabled{opacity:.4;cursor:not-allowed}.generate-btn.loading{pointer-events:none}.generate-btn.loading .btn-content{display:none}.generate-btn.loading .btn-loading{display:flex!important;align-items:center;gap:10px}.btn-content{display:flex;align-items:center;gap:8px}.spinner{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.generate-hint{margin-top:10px;font-size:.8rem;color:var(--text-muted);min-height:20px}.progress-section{margin-bottom:48px}.progress-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:28px 32px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.progress-header{margin-bottom:20px}.progress-status{display:flex;align-items:center;gap:10px;font-size:.95rem;font-weight:500;color:var(--text-primary)}.pulse-dot{width:10px;height:10px;border-radius:50%;background:var(--accent-primary);animation:pulse 1.5s ease-in-out infinite}body.mode-clothchange .pulse-dot{background:var(--accent-clothchange)}body.mode-bgchange .pulse-dot{background:var(--accent-bgchange)}body.mode-linesketch .pulse-dot{background:var(--accent-linesketch)}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}.progress-bar-container{height:6px;background:#ffffff0f;border-radius:3px;overflow:hidden;margin-bottom:24px}.progress-bar{height:100%;width:0%;background:var(--gradient-primary);border-radius:3px;transition:width .6s cubic-bezier(.4,0,.2,1);position:relative}body.mode-clothchange .progress-bar{background:var(--gradient-clothchange)}body.mode-bgchange .progress-bar{background:var(--gradient-bgchange)}body.mode-linesketch .progress-bar{background:var(--gradient-linesketch)}.progress-bar:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.progress-steps{display:flex;justify-content:space-between}.step{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-muted);transition:color var(--transition-base)}.step.active{color:var(--accent-primary)}body.mode-clothchange .step.active{color:var(--accent-clothchange)}body.mode-bgchange .step.active{color:var(--accent-bgchange)}body.mode-linesketch .step.active{color:var(--accent-linesketch)}.step.done{color:#34d399}.step-dot{width:8px;height:8px;border-radius:50%;background:currentColor;transition:all var(--transition-base)}.step.active .step-dot{box-shadow:0 0 8px currentColor}.result-section{margin-bottom:48px;text-align:center}.result-title{font-size:1.5rem;font-weight:700;margin-bottom:24px;background:var(--gradient-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.result-card{position:relative;border-radius:var(--radius-2xl);overflow:hidden;border:1px solid var(--border-subtle);background:var(--bg-card);box-shadow:var(--shadow-card);margin-bottom:24px;animation:fadeInUp .6s ease-out}.result-card img{width:100%;display:block;max-height:600px;object-fit:contain;background:#111}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.download-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:var(--gradient-primary);color:#fff;border-radius:var(--radius-md);font-family:Inter,sans-serif;font-size:.9rem;font-weight:600;text-decoration:none;transition:all var(--transition-base)}body.mode-clothchange .download-btn{background:var(--gradient-clothchange)}body.mode-bgchange .download-btn{background:var(--gradient-bgchange)}body.mode-linesketch .download-btn{background:var(--gradient-linesketch)}.download-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #6366f159}body.mode-clothchange .download-btn:hover{box-shadow:0 8px 24px #14b8a659}body.mode-bgchange .download-btn:hover{box-shadow:0 8px 24px #0ea5e959}body.mode-linesketch .download-btn:hover{box-shadow:0 8px 24px #f59e0b59}.new-photo-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-family:Inter,sans-serif;font-size:.9rem;font-weight:600;cursor:pointer;transition:all var(--transition-base)}.new-photo-btn:hover{background:var(--bg-card-hover);border-color:var(--border-active);transform:translateY(-2px)}.error-section{margin-bottom:48px}.error-card{text-align:center;padding:36px;background:#ef44440f;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-xl);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);animation:fadeInUp .4s ease-out}.error-icon{font-size:2rem;margin-bottom:12px}.error-message{color:#fca5a5;font-size:.95rem;margin-bottom:20px;line-height:1.6}.retry-btn{padding:10px 24px;background:#ef444433;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:#fca5a5;font-family:Inter,sans-serif;font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition-base)}.retry-btn:hover{background:#ef44444d;transform:translateY(-1px)}.footer{text-align:center;padding:32px 0;border-top:1px solid var(--border-subtle);margin-top:24px}.footer p{font-size:.8rem;color:var(--text-muted);letter-spacing:.02em}@media (max-width: 768px){#app{padding:0 16px}.header-inner{flex-direction:column;gap:6px;align-items:flex-start}.mode-switcher{flex-direction:column}.upload-grid{flex-direction:column;gap:16px}.upload-card{width:100%;height:260px}.merge-icon-container{transform:rotate(90deg)}.progress-steps{flex-direction:column;gap:10px}}