*{margin:0;padding:0;box-sizing:border-box;}:root{--primary-color:#6366f1;--primary-dark:#4f46e5;--secondary-color:hsl(258,90%,66%);--accent-color:#ec4899;--success-color:#10b981;--bg-color:#f8fafc;--card-bg:#ffffff;--text-color:#1e293b;--text-light:#64748b;--border-color:#e2e8f0;--error-color:#ef4444;--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:var(--text-color);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;}.back-btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;background:var(--card-bg);color:var(--primary-color);text-decoration:none;border-radius:12px;font-weight:600;font-size:1rem;box-shadow:var(--shadow);transition:all 0.3s ease;margin:4rem 2rem 2rem;position:relative;overflow:hidden;border:2px solid transparent;width:fit-content;justify-content:flex-start;align-self:flex-start;}.back-btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(99,102,241,0.1),transparent);transition:left 0.5s ease;}.back-btn:hover::before{left:100%;}.back-btn:hover{background:var(--primary-color);color:white;transform:translateX(-5px);box-shadow:var(--shadow-lg);border-color:var(--primary-color);}.back-btn:active{transform:translateX(-3px)scale(0.98);}.container{max-width:800px;margin:0 auto;padding:1.5rem 1rem;width:100%;background:transparent;flex:1;}.page-header{text-align:center;margin-bottom:2rem;}.page-header h1{font-size:2rem;color:white;margin-bottom:0.5rem;text-shadow:0 2px 4px rgba(0,0,0,0.1);}.page-header p{font-size:1rem;color:rgba(255,255,255,0.9);line-height:1.5;}.compressor-wrapper{background:var(--card-bg);border-radius:16px;box-shadow:var(--shadow-lg);padding:2rem 1.5rem;animation:fadeInUp 0.6s ease;}.upload-section{margin-bottom:2rem;}.upload-zone{display:block;border:2px dashed var(--border-color);border-radius:12px;padding:3rem 2rem;text-align:center;cursor:pointer;transition:all 0.3s ease;background:linear-gradient(135deg,var(--bg-color)0%,#f1f5f9 100%);}.upload-zone:hover{border-color:var(--primary-color);background:linear-gradient(135deg,#eef2ff 0%,#f0f4ff 100%);}.upload-zone.dragover{border-color:var(--primary-color);background:linear-gradient(135deg,#e0e7ff 0%,#e0e7ff 100%);transform:scale(1.02);}.upload-icon{font-size:3rem;margin-bottom:1rem;}.upload-zone h3{font-size:1.25rem;color:var(--text-color);margin-bottom:0.5rem;}.upload-zone p{font-size:0.95rem;color:var(--text-light);margin-bottom:0.75rem;}.upload-zone small{display:block;font-size:0.85rem;color:#94a3b8;}.error-message{display:none;margin-top:1rem;padding:1rem;background:#fee2e2;border-left:4px solid var(--error-color);border-radius:6px;color:#991b1b;font-size:0.95rem;}.error-message.show{display:block;animation:slideIn 0.3s ease;}.preview-section{margin-bottom:2rem;animation:fadeIn 0.6s ease 0.2s backwards;}.preview-container{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:2rem;align-items:stretch;}.preview-card{background:var(--bg-color);border:1px solid var(--border-color);border-radius:12px;padding:1.25rem;text-align:center;transition:all 0.3s ease;}.preview-card:hover{border-color:var(--primary-color);box-shadow:var(--shadow);}.preview-card h4{font-size:1rem;color:var(--text-color);margin-bottom:1rem;font-weight:600;}.preview-card img{width:100%;max-height:300px;object-fit:contain;border-radius:8px;margin-bottom:1rem;background:white;padding:0.5rem;border:1px solid var(--border-color);}.file-info{text-align:left;}.file-info p{font-size:0.9rem;color:var(--text-light);margin-bottom:0.5rem;word-break:break-word;}.file-info p strong{color:var(--text-color);}.savings{color:var(--success-color);font-weight:600;}.vs-icon{display:none;font-size:2rem;text-align:center;align-self:center;color:var(--primary-color);animation:fadeIn 0.6s ease;}.button-group{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem;animation:fadeIn 0.6s ease 0.4s backwards;}.btn{padding:1rem 1.5rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all 0.3s ease;text-decoration:none;display:inline-block;text-align:center;box-shadow:var(--shadow);}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}.btn:active{transform:translateY(0);}.btn-primary{background:linear-gradient(135deg,var(--primary-color)0%,var(--secondary-color)100%);color:white;}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-dark)0%,#9333ea 100%);}.btn-success{background:linear-gradient(135deg,var(--success-color)0%,#059669 100%);color:white;}.btn-success:hover{background:linear-gradient(135deg,#059669 0%,#047857 100%);}.btn-secondary{background:var(--text-light);color:white;}.btn-secondary:hover{background:#475569;}.btn:disabled{opacity:0.6;cursor:not-allowed;transform:none;}.info-section{background:linear-gradient(135deg,#f0f4ff 0%,#faf5ff 100%);border-left:4px solid var(--primary-color);border-radius:8px;padding:1.5rem;margin-bottom:2rem;animation:fadeIn 0.6s ease 0.6s backwards;}.info-section h3{font-size:1.1rem;color:var(--primary-color);margin-bottom:1rem;}.info-section ul{list-style:none;padding-left:0;}.info-section li{padding:0.5rem 0;padding-left:1.5rem;position:relative;font-size:0.95rem;color:var(--text-color);line-height:1.5;}.info-section li::before{content:'✓';position:absolute;left:0;color:var(--success-color);font-weight:bold;}.features-section{margin-bottom:2rem;animation:fadeIn 0.6s ease 0.8s backwards;}.features-section h3{font-size:1.25rem;color:var(--text-color);margin-bottom:1.5rem;text-align:center;}.features-grid{display:grid;grid-template-columns:1fr;gap:1.25rem;}.feature-card{background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;text-align:center;transition:all 0.3s ease;}.feature-card:hover{border-color:var(--primary-color);box-shadow:var(--shadow);transform:translateY(-4px);}.feature-icon{font-size:2.5rem;display:block;margin-bottom:1rem;}.feature-card h4{font-size:1.05rem;color:var(--text-color);margin-bottom:0.5rem;}.feature-card p{font-size:0.9rem;color:var(--text-light);line-height:1.5;}.pro-footer{background:linear-gradient(135deg,#1e293b 0%,#334155 100%);color:#e2e8f0;padding:3rem 1rem 1rem;margin-top:auto;}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2rem;}.footer-section h3,.footer-section h4{color:white;margin-bottom:1rem;font-size:1.25rem;}.footer-brand{text-align:center;}.footer-brand img{width:200px;height:auto;border-radius:12px;margin-bottom:1rem;margin-top:2rem;}.footer-brand p{color:#94a3b8;font-size:0.95rem;margin-top:0;}.footer-section ul{list-style:none;}.footer-section ul li{margin-bottom:0.5rem;}.footer-section a{color:#cbd5e1;text-decoration:none;transition:color 0.3s ease;}.footer-section a:hover{color:var(--primary-color);}.contact p{margin-bottom:0.5rem;color:#cbd5e1;}.contact small{display:block;color:#94a3b8;font-size:0.8rem;margin-top:-0.25rem;margin-bottom:0.5rem;}.footer-bottom{border-top:1px solid #475569;padding-top:1.5rem;text-align:center;}.footer-bottom p{color:#94a3b8;font-size:0.9rem;margin-bottom:0.5rem;}.copyright-warning{font-size:0.8rem;color:#64748b;margin-top:0.5rem;}@media(min-width:640px){.compressor-wrapper{padding:2.5rem 2rem;}.preview-container{grid-template-columns:1fr 60px 1fr;align-items:center;}.vs-icon{display:block;}.preview-card img{max-height:250px;}.button-group{flex-direction:row;gap:1rem;}.btn{flex:1;}.features-grid{grid-template-columns:1fr 1fr;}.footer-container{grid-template-columns:repeat(2,1fr);}}@media(min-width:768px){.container{padding:2rem 1.5rem;}.page-header h1{font-size:2.5rem;}.page-header p{font-size:1.1rem;}.compressor-wrapper{padding:3rem;}.preview-card img{max-height:350px;}.features-grid{grid-template-columns:repeat(4,1fr);}.feature-card{padding:2rem 1.5rem;}.footer-container{grid-template-columns:repeat(3,1fr);text-align:left;}.footer-brand{text-align:left;}}@media(min-width:1024px){.container{padding:2.5rem 2rem;}.page-header h1{font-size:3rem;}.compressor-wrapper{padding:3.5rem;}}@keyframes fadeInUp{from{opacity:0;transform:translateY(30px);}to{opacity:1;transform:translateY(0);}}@keyframes slideIn{from{opacity:0;transform:translateX(-10px);}to{opacity:1;transform:translateX(0);}}.compressor-wrapper{animation:fadeInUp 0.6s ease;}.preview-section{animation:fadeInUp 0.6s ease 0.2s backwards;}.feature-card{animation:fadeInUp 0.6s ease backwards;}.feature-card:nth-child(1){animation-delay:0.1s;}.feature-card:nth-child(2){animation-delay:0.2s;}.feature-card:nth-child(3){animation-delay:0.3s;}.feature-card:nth-child(4){animation-delay:0.4s;}.btn:disabled{pointer-events:none;}.btn.loading::after{content:' ⏳';animation:spin 1s linear infinite;}@keyframes spin{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}*:focus{outline:2px solid var(--primary-color);outline-offset:2px;}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;}}.blog-cta{background:linear-gradient(135deg,rgba(99,102,241,0.1)0%,rgba(139,92,246,0.1)100%);border:2px solid var(--primary-color);border-radius:12px;padding:2.5rem;text-align:center;}.blog-cta-content h3{font-size:1.8rem;color:var(--text-color);margin-bottom:1rem;font-weight:700;}.blog-cta-content p{font-size:1.1rem;color:var(--text-light);margin-bottom:1.5rem;line-height:1.8;}.blog-btn{display:inline-block;padding:1rem 2.5rem;background:linear-gradient(135deg,var(--primary-color)0%,var(--secondary-color)100%);color:white;text-decoration:none;border-radius:10px;font-weight:700;font-size:1.05rem;box-shadow:var(--shadow);transition:all 0.3s ease;}.blog-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}