*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #06b6d4;--primary-dark: #0891b2;--accent: #f97316;--accent-dark: #ea580c;--bg-dark: #0a0a0f;--bg-card: #1a1a24;--bg-card-light: #25252f;--text-primary: #f8fafc;--text-secondary: #94a3b8;--border: rgba(148, 163, 184, .1);--success: #22c55e;--error: #ef4444;--shadow-glow: 0 0 40px rgba(6, 182, 212, .3)}body{font-family:Sora,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-dark);color:var(--text-primary);min-height:100vh;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 50%,rgba(6,182,212,.15) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(249,115,22,.1) 0%,transparent 50%),radial-gradient(circle at 40% 20%,rgba(139,92,246,.08) 0%,transparent 50%);animation:gradientShift 20s ease infinite;pointer-events:none;z-index:0}@keyframes gradientShift{0%,to{transform:translate(0) rotate(0)}33%{transform:translate(5%,-5%) rotate(120deg)}66%{transform:translate(-5%,5%) rotate(240deg)}}.container{max-width:1400px;margin:0 auto;padding:2rem;position:relative;z-index:1}header{text-align:center;margin-bottom:3rem;animation:fadeInDown .8s ease}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}.logo{display:inline-flex;align-items:center;gap:1rem;margin-bottom:1rem}.logo-icon{width:50px;height:50px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:var(--shadow-glow);animation:pulse 3s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;letter-spacing:-.02em}.subtitle{color:var(--text-secondary);font-size:1.1rem;font-weight:300}.main-content{display:grid;gap:2rem;animation:fadeInUp .8s ease .2s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.upload-section{background:var(--bg-card);border-radius:24px;padding:3rem;border:1px solid var(--border);position:relative;overflow:hidden;backdrop-filter:blur(10px);transition:all .3s ease}.upload-section:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity .3s ease}.upload-section:hover:before{opacity:1}.upload-zone{border:2px dashed var(--border);border-radius:16px;padding:4rem 2rem;text-align:center;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden;background:#1a1a2480}.upload-zone:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#06b6d41a,#f973161a);opacity:0;transition:opacity .3s ease}.upload-zone:hover{border-color:var(--primary);background:#06b6d40d;transform:translateY(-2px)}.upload-zone:hover:before{opacity:1}.upload-zone.drag-over{border-color:var(--accent);background:#f973161a;transform:scale(1.02)}.upload-icon{font-size:4rem;margin-bottom:1rem;opacity:.8;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.upload-text{font-size:1.2rem;margin-bottom:.5rem;font-weight:600}.upload-hint{color:var(--text-secondary);font-size:.9rem}.file-input{display:none}.preview-section{display:none;background:var(--bg-card);border-radius:24px;padding:2rem;border:1px solid var(--border);animation:fadeInUp .5s ease}.preview-section.active{display:block}.comparison-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-bottom:2rem}.preview-card{background:var(--bg-card-light);border-radius:16px;padding:1.5rem;border:1px solid var(--border);position:relative;overflow:hidden}.preview-label{font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.preview-label:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary);animation:blink 2s ease-in-out infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.3}}.image-container{position:relative;border-radius:12px;overflow:hidden;background-image:linear-gradient(45deg,#1a1a24 25%,transparent 25%),linear-gradient(-45deg,#1a1a24 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1a1a24 75%),linear-gradient(-45deg,transparent 75%,#1a1a24 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;background-color:var(--bg-dark);min-height:300px;display:flex;align-items:center;justify-content:center}.preview-image{max-width:100%;max-height:500px;width:auto;height:auto;display:block;margin:0 auto;border-radius:8px}.controls{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;padding:1.5rem;background:var(--bg-card-light);border-radius:16px;border:1px solid var(--border)}.control-group{display:flex;align-items:center;gap:.75rem}.control-label{font-size:.9rem;font-weight:500;color:var(--text-secondary);white-space:nowrap}.bg-options{display:flex;gap:.5rem}.bg-option{width:40px;height:40px;border-radius:8px;border:2px solid var(--border);cursor:pointer;transition:all .3s ease;position:relative}.bg-option:hover{transform:scale(1.1);border-color:var(--primary)}.bg-option.active{border-color:var(--primary);box-shadow:0 0 0 3px #06b6d433}.bg-option.transparent{background-image:linear-gradient(45deg,#25252f 25%,transparent 25%),linear-gradient(-45deg,#25252f 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#25252f 75%),linear-gradient(-45deg,transparent 75%,#25252f 75%);background-size:10px 10px;background-position:0 0,0 5px,5px -5px,-5px 0px;background-color:var(--bg-dark)}.bg-option.white{background:#fff}.bg-option.black{background:#000}.btn{padding:.875rem 1.75rem;border-radius:12px;border:none;font-family:inherit;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:.5rem;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#fff3;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active:before{width:300px;height:300px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 20px #06b6d44d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px #06b6d466}.btn-secondary{background:var(--bg-card-light);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card);border-color:var(--primary);transform:translateY(-2px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn-group{display:flex;gap:1rem;margin-top:1rem;flex-wrap:wrap}.loading-overlay{display:none;position:fixed;inset:0;background:#0a0a0ff2;backdrop-filter:blur(10px);z-index:1000;align-items:center;justify-content:center}.loading-overlay.active{display:flex}.loading-content{text-align:center;animation:fadeInUp .5s ease}.spinner{width:80px;height:80px;margin:0 auto 2rem;position:relative}.spinner:before,.spinner:after{content:"";position:absolute;inset:0;border:3px solid transparent;border-radius:50%;animation:spin 1.5s linear infinite}.spinner:before{border-top-color:var(--primary);border-right-color:var(--primary)}.spinner:after{border-bottom-color:var(--accent);border-left-color:var(--accent);animation-direction:reverse;animation-duration:1s}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:1.25rem;font-weight:600;margin-bottom:.5rem}.loading-subtext{color:var(--text-secondary);font-size:.95rem}.progress-bar{width:300px;height:6px;background:var(--bg-card);border-radius:3px;margin:1.5rem auto 0;overflow:hidden;position:relative}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px;transition:width .3s ease;position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 1.5s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.status-message{padding:1rem 1.5rem;border-radius:12px;margin-bottom:1rem;display:flex;align-items:center;gap:.75rem;animation:slideInRight .3s ease;border-left:3px solid}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.status-message.success{background:#22c55e1a;border-color:var(--success);color:var(--success)}.status-message.error{background:#ef44441a;border-color:var(--error);color:var(--error)}@media (max-width: 768px){.container{padding:1rem}header{margin-bottom:2rem}.upload-section{padding:1.5rem}.upload-zone{padding:3rem 1rem}.comparison-container{grid-template-columns:1fr}.controls{flex-direction:column;align-items:stretch}.control-group{justify-content:space-between;width:100%}.btn-group{flex-direction:column}.btn{width:100%;justify-content:center}}.hidden{display:none!important}