:root{--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#f3f4f6;--secondary-hover:#e5e7eb;--text:#111827;--text-light:#6b7280;--border:#e5e7eb;--bg-light:#f9fafb;--error:#ef4444;--success:#10b981;--info:#3b82f6;--warning:#f59e0b;--card-shadow:0 4px 6px rgba(0,0,0,0.05);--page-shadow:0 2px 4px rgba(0,0,0,0.1);--transition:all .3s cubic-bezier(0.25,0.8,0.25,1)}*{box-sizing:border-box;margin:0;padding:0}.containert{max-width:1200px;margin:100px auto;background:white;border-radius:16px;box-shadow:var(--page-shadow);overflow:hidden}.header-t{padding:32px;border-bottom:1px solid var(--border);text-align:center;background:white}.header-t h1{font-size:2rem;margin-bottom:12px;font-weight:700;line-height:1.6;color:var(--primary);font-family:"Noto Sans",sans-serif;text-align:center}.header-t p{color:var(--text-light);font-size:1rem;font-family:"Noto Sans",sans-serif;text-align:center;max-width:80%;margin-left:auto;margin-right:auto}.main-content{padding:32px}.upload-section{text-align:center;padding:60px 40px;border:2px dashed var(--border);border-radius:16px;background-color:var(--bg-light);transition:all .3s ease;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center}.upload-section:hover{border-color:var(--primary);background-color:rgba(79,70,229,0.03)}.upload-section.drag-over{border-color:var(--primary);background-color:rgba(79,70,229,0.1);transform:scale(1.01)}.upload-icon{font-size:56px;color:var(--primary);margin-bottom:20px;display:block}.upload-text{font-size:1.25rem;color:var(--text);margin-bottom:8px;font-weight:500;text-align:center}.upload-hint{font-size:.9rem;color:var(--text-light);margin-bottom:8px;text-align:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border-radius:10px;font-weight:600;cursor:pointer;transition:var(--transition);border:0;outline:0;font-size:.95rem;gap:8px}.btn-primary{background-color:var(--primary);color:white}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px rgba(79,70,229,0.3)}.btn-success{background-color:var(--success);color:white}.btn-success:hover:not(:disabled){background-color:#059669;transform:translateY(-2px);box-shadow:0 4px 12px rgba(16,185,129,0.3)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.preview-container{display:none;margin-top:30px;animation:fadeIn .3s ease}.preview-row{display:flex;gap:24px;flex-wrap:wrap}.preview-card{flex:1;min-width:280px;background:white;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--card-shadow)}.preview-header{background:var(--primary);color:white;padding:12px 16px;font-weight:600;display:flex;align-items:center;gap:8px}.preview-header i{font-size:1rem}.preview-image{padding:20px;text-align:center;min-height:220px;display:flex;align-items:center;justify-content:center;background:var(--bg-light)}.preview-image img{max-width:100%;max-height:180px;object-fit:contain}.preview-info{padding:15px;background:var(--bg-light);border-top:1px solid var(--border)}.preview-info div{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.85rem}.preview-info div span:first-child{color:var(--text-light);font-weight:500}.preview-info div span:last-child{color:var(--text);font-weight:500}.compression-controls{margin:30px 0;padding:24px;background:var(--bg-light);border-radius:12px;border:1px solid var(--border)}.compression-controls h3{font-size:1.1rem;margin-bottom:20px;color:var(--text);display:flex;align-items:center;gap:8px}.compression-controls h3 i{color:var(--primary)}.quality-control{margin-bottom:20px}.quality-control label{display:block;margin-bottom:10px;font-weight:500;color:var(--text)}.quality-slider{width:100%;height:6px;border-radius:3px;background:var(--border);-webkit-appearance:none}.quality-slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer}.quality-hint{margin-top:10px;font-size:.8rem;color:var(--text-light)}.compression-stats{display:flex;gap:20px;flex-wrap:wrap;margin-top:20px}.stat-card{flex:1;min-width:150px;padding:15px;background:white;border-radius:10px;text-align:center;border:1px solid var(--border)}.stat-label{font-size:.8rem;color:var(--text-light);margin-bottom:8px}.stat-value{font-size:1.5rem;font-weight:700;color:var(--primary)}.download-btn{width:100%;padding:14px;font-size:1rem;margin-top:20px}.loading{display:none;text-align:center;padding:40px;background:var(--bg-light);border-radius:12px;margin-top:20px}.loading i{font-size:48px;color:var(--primary);margin-bottom:16px}.loading p{color:var(--text-light);font-size:.9rem}.error-message{display:none;padding:16px;background-color:#fee2e2;color:var(--error);border-radius:8px;margin-top:20px;text-align:center;font-weight:500;border-left:4px solid var(--error)}.toast{position:fixed;bottom:20px;right:20px;padding:12px 24px;border-radius:8px;background:var(--primary);color:white;font-weight:500;box-shadow:0 4px 12px rgba(0,0,0,0.15);opacity:0;transform:translateY(100px);transition:var(--transition);z-index:1000}@media(max-width:480px){.toast{left:20px;right:20px;text-align:center}}.toast.show{opacity:1;transform:translateY(0)}.toast.error{background-color:var(--error)}.toast.success{background-color:var(--success)}.how-to-section-wrapper{max-width:1200px;margin:60px auto;padding:0 20px}.how-to-section-wrapper h2{font-family:'Space Grotesk',sans-serif;text-align:center;font-size:2rem;color:#333;line-height:1.6;margin-bottom:40px}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.step-card{background-color:#fff;padding:30px;border-radius:12px;border:1px solid #e9ecef;text-align:left;box-shadow:0 5px 15px rgba(0,0,0,0.05);transition:transform .3s ease}.step-card:hover{transform:translateY(-5px)}.step-card .step-number{font-size:1.5rem;font-weight:700;color:#fff;background-color:#0d47a1;width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.step-card h3{font-family:'Space Grotesk',sans-serif;font-size:1.3rem;margin-bottom:10px;color:#222;line-height:1.6}.step-card p{color:#666;line-height:1.6;font-size:1rem;margin:0}@media(max-width:768px){.steps-grid{grid-template-columns:1fr}}.content-wrapper{max-width:1200px;margin:60px auto;padding:40px;background:var(--bg-light);border-radius:16px;border:1px solid var(--border)}.content-wrapper h2{font-size:1.8rem;color:var(--primary);margin-top:0;margin-bottom:20px;border-left:4px solid var(--primary);padding-left:15px}.content-wrapper h3{font-size:1.3rem;color:var(--text);margin-top:25px;margin-bottom:10px}.content-wrapper p{margin-bottom:20px;font-size:1rem;color:var(--text);line-height:1.6}.content-wrapper ul{list-style:none;padding:0;margin-bottom:25px}.content-wrapper ul li{position:relative;padding-left:28px;margin-bottom:12px;font-size:1rem;color:var(--text)}.content-wrapper ul li i{position:absolute;left:0;top:3px;color:var(--success);font-size:1rem}.content-wrapper a{color:var(--primary);text-decoration:none;font-weight:500}.content-wrapper a:hover{text-decoration:underline}@media(max-width:768px){.content-wrapper{margin:30px 20px;padding:24px}.content-wrapper h2{font-size:1.5rem}}@media(max-width:1024px){.containert{max-width:95%;margin:80px auto}}@media(max-width:768px){.containert{margin:60px auto;border-radius:12px}.header-t{padding:24px}.header-t h1{font-size:1.5rem}.header-t p{max-width:95%}.main-content{padding:24px}.upload-section{padding:40px 20px}.upload-icon{font-size:40px}.upload-text{font-size:1rem}.preview-row{flex-direction:column}.preview-card{min-width:auto}.compression-stats{flex-direction:column}.stat-card{min-width:auto}}@media(max-width:480px){.header-t h1{font-size:1.25rem}.main-content{padding:16px}.upload-section{padding:30px 16px}}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(prefers-color-scheme:dark){:root{--primary:#6366f1;--secondary:#374151;--text:#f9fafb;--text-light:#9ca3af;--border:#4b5563;--bg-light:#1f2937}body{background-color:#111827}.containert{background:#1f2937}.header-t{background:#1f2937;border-bottom-color:#4b5563}.upload-section{background-color:#1f2937}.preview-card{background:#1f2937}.preview-image{background:#1f2937}.preview-info{background:#1f2937}.compression-controls{background:#1f2937}.stat-card{background:#1f2937}.step-card{background:#1f2937;border-color:#374151}.step-card h3{color:#f9fafb}.step-card p{color:#9ca3af}.content-wrapper{background:#1f2937;border-color:#374151;color:#e5e7eb}.content-wrapper h2{color:#818cf8}.content-wrapper p,.content-wrapper ul li{color:#9ca3af}}@media print{.upload-section,.compression-controls,.download-btn,.how-to-section-wrapper,.content-wrapper{display:none !important}.preview-container{display:block !important}.containert{margin:0;padding:0;max-width:100%;box-shadow:none}}.btn:focus-visible,.quality-slider:focus-visible{outline:2px solid var(--primary);outline-offset:2px}