: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;--warning:#f59e0b;--card-shadow:0 4px 6px rgba(0,0,0,0.05);--page-shadow:0 2px 4px rgba(0,0,0,0.1)}*{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:24px;border-bottom:1px solid var(--border);text-align:center;background:white}.header-t h1{font-size:2.5rem;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:1.05rem;font-family:"Noto Sans",sans-serif;text-align:center;max-width:80%;margin-left:auto;margin-right:auto}.main-content{padding:32px;transition:all .3s ease}.upload-section{text-align:center;padding:48px;border:2px dashed var(--border);border-radius:12px;background-color:var(--bg-light);transition:all .3s ease;margin-bottom:24px;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:12px;font-weight:500;text-align:center}.upload-hint{font-size:.95rem;color:var(--text-light);margin-bottom:24px;text-align:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;border:0;outline:0;font-size:1rem;gap:10px}.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-secondary{background-color:var(--secondary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background-color:var(--secondary-hover);transform:translateY(-2px);box-shadow:0 2px 8px rgba(0,0,0,0.1)}.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}.file-info{display:none;align-items:center;justify-content:center;gap:12px;padding:12px 20px;background:var(--bg-light);border-radius:8px;margin-bottom:24px;border:1px solid var(--border)}.file-info i{color:var(--error);font-size:20px}.file-info span{color:var(--text);font-size:14px}.preview-container{display:none;grid-template-columns:1fr 1fr;gap:24px;margin:24px 0}.preview-box{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:white;box-shadow:var(--card-shadow)}.preview-title{padding:12px 16px;background:var(--bg-light);border-bottom:1px solid var(--border);font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px}.preview-title i{color:var(--primary)}.preview-image-container{background:#f5f5f5;display:flex;align-items:center;justify-content:center;padding:20px;min-height:400px}.preview-image-container canvas{max-width:100%;height:auto;display:block;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.enhancement-controls{display:none;background:var(--bg-light);border-radius:12px;padding:24px;margin:24px 0;border:1px solid var(--border)}.controls-title{font-size:1.2rem;margin-bottom:20px;color:var(--primary);font-weight:600;display:flex;align-items:center;gap:10px}.controls-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.control-group{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.control-label{font-weight:500;color:var(--text);min-width:100px}.control-group input[type="range"]{flex:1;min-width:150px;height:4px;border-radius:2px;background:var(--border);-webkit-appearance:none}.control-group input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--primary);cursor:pointer}.control-group span{min-width:35px;text-align:center;font-size:13px;color:var(--text-light)}.checkbox-group{display:flex;align-items:center;gap:8px}.checkbox-group input{width:18px;height:18px;cursor:pointer}.checkbox-group label{cursor:pointer;color:var(--text)}.action-buttons{display:none;justify-content:center;gap:20px;margin:24px 0}.download-section{display:none;text-align:center;margin:24px auto;padding:24px;background:linear-gradient(135deg,rgba(16,185,129,0.1),rgba(16,185,129,0.05));border-radius:16px;border:1px solid rgba(16,185,129,0.3);max-width:500px}.download-card{text-align:center}.download-card i{font-size:48px;color:var(--success);margin-bottom:16px}.download-card h3{color:var(--success);margin-bottom:20px;font-size:1.3rem}.download-card .btn{margin:8px}.loading{display:none;text-align:center;padding:40px;color:var(--primary)}.loading i{font-size:48px;margin-bottom:16px}.progress-section{display:none;background:var(--bg-light);border-radius:12px;padding:24px;margin:24px 0;text-align:center}.progress-bar-container{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin:16px 0}.progress-bar{height:100%;background:var(--primary);width:0;transition:width .3s ease}.error-message{display:none;padding:16px;background-color:#fee2e2;color:var(--error);border-radius:8px;margin:16px 0;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:all .3s ease;z-index:1000}.toast.show{opacity:1;transform:translateY(0)}.toast.success{background:var(--success)}.toast.error{background:var(--error)}.how-to-section-wrapper{max-width:1200px;margin:40px auto;padding:0 20px}.how-to-section-wrapper h2{font-family:'Space Grotesk',sans-serif;text-align:center;font-size:2.2rem;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:40px auto;padding:20px;font-family:'Noto Sans',sans-serif;line-height:1.6;color:#333}.content-wrapper h2{font-size:2.2em;color:#4f46e5;margin-top:40px;margin-bottom:15px;border-bottom:2px solid #e5e7eb;padding-bottom:10px}.content-wrapper h3{font-size:1.5em;color:#333;margin-top:30px;margin-bottom:10px}.content-wrapper p{margin-bottom:20px;font-size:1em}.content-wrapper ul{list-style:none;padding:0;margin-bottom:20px}.content-wrapper ul li{position:relative;padding-left:30px;margin-bottom:15px;font-size:1em}.content-wrapper ul li i{position:absolute;left:0;top:5px;color:#10b981;font-size:1.2em}.content-wrapper a{color:#4f46e5;text-decoration:none;font-weight:bold;transition:color .3s ease}.content-wrapper a:hover{color:#4338ca;text-decoration:underline}@media(max-width:768px){.content-wrapper{padding:15px;margin:20px auto}.content-wrapper h2{font-size:1.8em}.content-wrapper h3{font-size:1.3em}}@media(max-width:1024px){.containert{max-width:95%;margin:20px auto}.main-content{padding:20px}.preview-container{grid-template-columns:1fr;gap:20px}.preview-image-container{min-height:300px}.header-t p{max-width:95%}}@media(max-width:768px){.header-t h1{font-size:1.8rem}.upload-icon{font-size:40px}.upload-text{font-size:1rem}.controls-grid{grid-template-columns:1fr}.control-group{flex-direction:column;align-items:flex-start}.control-group input[type="range"]{width:100%}.action-buttons{flex-direction:column}.btn{width:100%;justify-content:center}.download-section{max-width:90%}.upload-section{padding:32px 24px}}@media(max-width:480px){.header-t{padding:16px}.header-t h1{font-size:1.5rem}.main-content{padding:16px}.preview-image-container{padding:12px;min-height:250px}.toast{left:20px;right:20px;text-align:center}}@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-box{background:#1f2937}.preview-image-container{background:#1f2937}.enhancement-controls{background:#1f2937}.progress-section{background:#1f2937}.step-card{background:#1f2937;border-color:#374151}.step-card h3{color:#f9fafb}.step-card p{color:#9ca3af}.content-wrapper{color:#e5e7eb}.content-wrapper h3{color:#f9fafb}}@media print{.upload-section,.enhancement-controls,.action-buttons,.download-section,.how-to-section-wrapper,.content-wrapper{display:none !important}.preview-container{display:grid !important}.containert{margin:0;padding:0;max-width:100%;box-shadow:none}}.btn:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}