.filter-container{display:grid;grid-template-columns:320px 1fr;gap:28px}.filter-sidebar{display:flex;flex-direction:column;gap:24px}.upload-card{background:linear-gradient(135deg, var(--gray-50), #fff);border-radius:20px;padding:20px;border:1px solid var(--gray-200)}.upload-area{text-align:center;padding:30px 20px;border:2px dashed var(--gray-300);border-radius:16px;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:var(--primary-color);background:rgba(59,130,246,0.05)}.upload-icon i{font-size:48px;color:var(--primary-color);margin-bottom:16px}.upload-area h4{font-size:1rem;margin-bottom:8px;color:var(--gray-800)}.upload-area p{font-size:0.85rem;color:var(--gray-500);margin-bottom:8px}.upload-hint{font-size:0.7rem;color:var(--gray-400);display:block;margin-bottom:16px}.btn-upload{background:var(--primary-color);color:white;border:none;padding:10px 24px;border-radius:40px;cursor:pointer;font-size:0.85rem;transition:all 0.3s}.btn-upload:hover{background:var(--primary-dark);transform:translateY(-2px)}.image-info{margin-top:16px;padding:12px;background:var(--gray-100);border-radius:12px;display:flex;justify-content:space-around}.info-item{display:flex;align-items:center;gap:6px;font-size:0.7rem;color:var(--gray-600)}.info-item i{color:var(--primary-color)}.filter-section{background:white;border-radius:20px;padding:16px;border:1px solid var(--gray-200)}.filter-section h4{font-size:0.85rem;margin-bottom:12px;color:var(--gray-700);display:flex;align-items:center;gap:6px}.filter-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:8px}.filter-btn{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:40px;padding:8px 6px;cursor:pointer;transition:all 0.2s;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:0.7rem}.filter-btn i{font-size:0.9rem;color:var(--gray-500)}.filter-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:white}.filter-btn.active i{color:white}.filter-btn:hover:not(.active){background:var(--gray-100);transform:translateY(-2px)}.param-panel{background:white;border-radius:20px;padding:16px;border:1px solid var(--gray-200)}.param-panel h4{font-size:0.85rem;margin-bottom:16px;color:var(--gray-700)}.param-control{margin-bottom:12px}.param-header{display:flex;justify-content:space-between;font-size:0.8rem;margin-bottom:8px;color:var(--gray-600)}.param-slider{width:100%;height:4px;-webkit-appearance:none;background:var(--gray-200);border-radius:2px;outline:none}.param-slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;background:var(--primary-color);border-radius:50%;cursor:pointer}.filter-preview{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200)}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg, var(--gray-50), #fff);border-bottom:1px solid var(--gray-200)}.preview-title{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--gray-700)}.preview-actions{display:flex;gap:12px}.preview-btn{background:transparent;border:none;padding:6px 16px;border-radius:30px;cursor:pointer;font-size:0.8rem;transition:all 0.2s;display:flex;align-items:center;gap:6px}.preview-btn:hover{background:var(--gray-100)}.preview-btn.primary{background:var(--primary-color);color:white}.preview-btn.primary:hover{background:var(--primary-dark)}.preview-container{min-height:450px;display:flex;align-items:center;justify-content:center;background:#1a1a2e;position:relative}#previewCanvas{max-width:100%;max-height:450px;object-fit:contain}.no-image-placeholder{position:absolute;text-align:center;color:var(--gray-500)}.placeholder-icon i{font-size:64px;margin-bottom:16px;color:var(--gray-400)}.preview-footer{padding:12px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;justify-content:center}.zoom-controls{display:flex;align-items:center;gap:16px}.zoom-btn{background:white;border:1px solid var(--gray-300);width:32px;height:32px;border-radius:8px;cursor:pointer;transition:all 0.2s}.zoom-btn:hover{background:var(--gray-100);border-color:var(--primary-color)}.info-section{margin-top:24px}.info-cards{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;margin-top:16px}.info-card{background:var(--gray-50);border-radius:12px;padding:12px;display:flex;align-items:center;gap:10px;font-size:0.8rem}.info-card i{color:var(--primary-color);font-size:1.1rem}@media (max-width:900px){.filter-container{grid-template-columns:1fr}.info-cards{grid-template-columns:repeat(2, 1fr)}}@media (max-width:480px){.filter-grid{grid-template-columns:repeat(2, 1fr)}.info-cards{grid-template-columns:1fr}}