:root{--primary-color:#4a6bff;--secondary-color:#f8f9fa;--text-color:#333;--light-gray:#e9ecef;--dark-gray:#6c757d;--success-color:#28a745}*{box-sizing:border-box;margin:0;padding:0;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}body{background-color:var(--secondary-color);color:var(--text-color);line-height:1.6;padding:20px}.container{max-width:1200px;margin:0 auto;padding:20px;background-color:#fff;border-radius:10px;box-shadow:0 0 20px rgba(0,0,0,.1)}header{text-align:center;margin-bottom:30px}h1{color:var(--primary-color);margin-bottom:10px}.subtitle{color:var(--dark-gray);font-size:1.1rem}.tool-container{display:flex;flex-wrap:wrap;gap:30px}.upload-section{flex:1;min-width:300px;background-color:var(--light-gray);padding:25px;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center}.preview-section{flex:1;min-width:300px;display:flex;flex-direction:column;gap:20px}.drop-area{border:2px dashed var(--dark-gray);border-radius:8px;padding:30px;text-align:center;cursor:pointer;transition:all .3s;width:100%;margin-bottom:20px}.drop-area:hover{border-color:var(--primary-color);background-color:rgba(74,107,255,.05)}.drop-area.highlight{border-color:var(--primary-color);background-color:rgba(74,107,255,.1)}.file-input{display:none}.btn{background-color:var(--primary-color);color:#fff;border:none;padding:12px 24px;border-radius:5px;cursor:pointer;font-size:1rem;font-weight:600;transition:all .3s;margin:5px}.btn:hover{background-color:#3a5ae8;transform:translateY(-2px)}.btn-secondary{background-color:var(--dark-gray)}.btn-secondary:hover{background-color:#5a6268}.btn-success{background-color:var(--success-color)}.btn-success:hover{background-color:#218838}.preview-container{border:1px solid var(--light-gray);border-radius:8px;padding:15px;background-color:#fff;box-shadow:0 0 10px rgba(0,0,0,.05)}.preview-title{margin-bottom:15px;font-weight:600;color:var(--primary-color);display:flex;justify-content:space-between;align-items:center}.preview-image{max-width:100%;max-height:300px;display:block;margin:0 auto;border:1px solid var(--light-gray)}.controls{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.control-group{margin-bottom:15px}label{display:block;margin-bottom:8px;font-weight:600}input[type=range]{width:100%;height:8px;border-radius:4px;background:var(--light-gray);outline:0;-webkit-appearance:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary-color);cursor:pointer}.checkbox-group{display:flex;align-items:center;margin-bottom:10px}.checkbox-group input{margin-right:10px}.loading{display:none;text-align:center;margin:20px 0}.spinner{border:4px solid rgba(0,0,0,.1);border-radius:50%;border-top:4px solid var(--primary-color);width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 15px}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}footer{text-align:center;margin-top:40px;color:var(--dark-gray);font-size:.9rem}@media (max-width:768px){.tool-container{flex-direction:column}.preview-section,.upload-section{width:100%}}
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