.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #667eea, #764ba2);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #667eea);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.collage-tabs{display:flex;gap:16px;margin-bottom:32px;justify-content:center}.collage-tab{background:transparent;border:none;padding:16px 28px;cursor:pointer;transition:all 0.3s;border-radius:24px;text-align:center;min-width:140px}.collage-tab i{font-size:1.5rem;color:var(--gray-400);margin-bottom:8px;display:block}.collage-tab span{display:block;font-weight:600;color:var(--gray-600);margin-bottom:4px}.collage-tab small{font-size:0.65rem;color:var(--gray-400)}.collage-tab.active{background:linear-gradient(135deg, #667eea, #764ba2);box-shadow:0 8px 25px rgba(102,126,234,0.3)}.collage-tab.active i,.collage-tab.active span,.collage-tab.active small{color:white}.nine-container{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:32px;padding:28px;border:1px solid var(--gray-200)}.upload-area{border:2px dashed var(--gray-300);border-radius:24px;padding:50px;text-align:center;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:#667eea;background:rgba(102,126,234,0.05)}.upload-area i{font-size:48px;color:var(--gray-400);margin-bottom:16px}.upload-hint{font-size:0.7rem;color:var(--gray-400);display:block;margin:12px 0}.nine-preview{margin-top:24px}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--gray-200)}.nine-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:4px;aspect-ratio:1;max-width:500px;margin:0 auto;background:var(--gray-100);border-radius:16px;overflow:hidden}.nine-grid img{width:100%;height:100%;object-fit:cover}.preview-actions{display:flex;justify-content:center;gap:16px;margin-top:24px}.grid-container{display:grid;grid-template-columns:300px 1fr;gap:24px}.grid-sidebar{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:24px;padding:20px;border:1px solid var(--gray-200)}.layout-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:10px;margin:16px 0}.layout-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:10px;border-radius:12px;cursor:pointer;font-size:0.85rem;transition:all 0.2s}.layout-btn.active{background:linear-gradient(135deg, #667eea, #764ba2);color:white;border-color:transparent}.option-row{margin:16px 0;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.option-row label{width:80px;font-size:0.8rem;color:var(--gray-600)}.image-slots{display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;margin:16px 0}.image-slot{aspect-ratio:1;background:var(--gray-100);border-radius:16px;display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden;border:2px dashed var(--gray-300);transition:all 0.2s}.image-slot.filled{border:2px solid #667eea}.image-slot img{width:100%;height:100%;object-fit:cover}.image-slot i{font-size:24px;color:var(--gray-400)}.image-slot:hover{border-color:#667eea;background:rgba(102,126,234,0.05)}.remove-img{position:absolute;top:-8px;right:-8px;background:#ef4444;color:white;border-radius:50%;width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:10px;cursor:pointer}.grid-preview-area{background:var(--gray-50);border-radius:24px;padding:20px;border:1px solid var(--gray-200)}.grid-canvas{min-height:400px;display:flex;align-items:center;justify-content:center}.grid-empty{text-align:center;padding:80px;color:var(--gray-400)}.grid-empty i{font-size:48px;margin-bottom:16px}.poster-container{display:grid;grid-template-columns:300px 1fr;gap:24px}.poster-sidebar{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:24px;padding:20px;border:1px solid var(--gray-200)}.template-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:12px;margin:16px 0}.template-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:16px;border-radius:16px;cursor:pointer;text-align:center;transition:all 0.2s}.template-btn i{font-size:24px;margin-bottom:8px;display:block}.template-btn.active{background:linear-gradient(135deg, #667eea, #764ba2);color:white}.bg-selector{display:flex;gap:8px}.bg-option{background:var(--gray-100);border:1px solid var(--gray-200);padding:8px 16px;border-radius:30px;cursor:pointer;font-size:0.8rem}.bg-option.active{background:#667eea;color:white}.poster-text-input{flex:1;padding:10px 16px;border:1px solid var(--gray-200);border-radius:40px;font-size:0.85rem}.poster-canvas{min-height:500px;display:flex;align-items:center;justify-content:center}.generate-btn{width:100%;margin-top:20px;padding:14px}.action-btn{background:var(--gray-100);border:none;padding:8px 16px;border-radius:30px;cursor:pointer;transition:all 0.2s}.action-btn:disabled{opacity:0.5;cursor:not-allowed}.action-btn:not(:disabled):hover{background:#667eea;color:white}.info-footer{margin-top:40px;background:linear-gradient(135deg, #f8fafc, #fff);border-radius:28px;padding:28px;border:1px solid var(--gray-200);box-shadow:0 4px 20px rgba(0,0,0,0.03)}.info-footer-header{display:flex;align-items:center;gap:12px;margin-bottom:24px;padding-bottom:16px;border-bottom:2px solid var(--gray-100)}.info-footer-header i{font-size:1.4rem;color:#667eea;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);padding:10px;border-radius:16px}.info-footer-header span{font-size:1.1rem;font-weight:700;color:var(--gray-800)}.info-footer-steps{display:grid;grid-template-columns:repeat(4, 1fr);gap:24px}.step-item{display:flex;gap:16px;align-items:flex-start;padding:16px;background:white;border-radius:20px;transition:all 0.3s;border:1px solid var(--gray-100)}.step-item:hover{transform:translateY(-4px);box-shadow:0 12px 25px rgba(0,0,0,0.08);border-color:#e0e7ff}.step-number{width:44px;height:44px;background:linear-gradient(135deg, #667eea, #764ba2);color:white;border-radius:20px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem;flex-shrink:0;box-shadow:0 4px 10px rgba(102,126,234,0.3)}.step-content{flex:1}.step-content h4{font-size:1rem;font-weight:700;color:var(--gray-800);margin-bottom:6px}.step-content p{font-size:0.8rem;color:var(--gray-500);line-height:1.4}@media (max-width:1024px){.info-footer-steps{grid-template-columns:repeat(2, 1fr);gap:16px}}@media (max-width:768px){.info-footer{padding:20px}.info-footer-steps{grid-template-columns:1fr;gap:12px}.step-item{padding:12px}.step-number{width:36px;height:36px;font-size:1rem;border-radius:14px}.step-content h4{font-size:0.9rem}.step-content p{font-size:0.75rem}}@media (max-width:900px){.grid-container,.poster-container{grid-template-columns:1fr}.collage-tab{padding:12px 16px;min-width:auto}.layout-grid{grid-template-columns:repeat(3, 1fr)}.image-slots{grid-template-columns:repeat(4, 1fr)}}@media (max-width:480px){.image-slots{grid-template-columns:repeat(3, 1fr)}.preview-header{flex-direction:column;gap:12px}}