.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;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.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}.tool-header p{color:var(--gray-500);font-size:1rem}.ffmpeg-status{background:linear-gradient(135deg, #fef3c7, #fffbeb);border-radius:60px;padding:12px 24px;text-align:center;margin-bottom:24px;color:#92400e;font-size:0.85rem}.ffmpeg-status.loading{background:linear-gradient(135deg, #e0e7ff, #f0f4ff);color:#3730a3}.ffmpeg-status.success{background:linear-gradient(135deg, #d1fae5, #a7f3d0);color:#065f46}.ffmpeg-status.error{background:linear-gradient(135deg, #fee2e2, #fecaca);color:#991b1b}.upload-section{margin-bottom:28px}.upload-area{background:linear-gradient(135deg, #f8fafc, #fff);border:2px dashed var(--gray-300);border-radius:32px;padding:48px 24px;text-align:center;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:#667eea;background:var(--gray-50)}.upload-area i{font-size:56px;color:var(--gray-400);margin-bottom:16px}.upload-hint{display:block;font-size:0.7rem;color:var(--gray-400);margin-top:8px}.video-info{background:var(--gray-50);border-radius:20px;padding:16px 20px;margin-top:16px;display:flex;flex-wrap:wrap;gap:24px}.info-row{display:flex;align-items:center;gap:8px;font-size:0.85rem}.info-row span{color:var(--gray-500)}.convert-options{background:var(--gray-50);border-radius:28px;padding:24px;margin-bottom:28px}.convert-options h3{font-size:1rem;margin-bottom:20px;display:flex;align-items:center;gap:8px;color:var(--gray-700)}.options-grid-vertical{display:grid;grid-template-columns:repeat(2, 1fr);gap:24px}.option-group label{display:block;font-size:0.75rem;font-weight:600;color:var(--gray-500);margin-bottom:10px}.option-buttons{display:flex;flex-wrap:wrap;gap:10px}.option-btn{background:white;border:1px solid var(--gray-200);padding:10px 20px;border-radius:40px;font-size:0.8rem;cursor:pointer;transition:all 0.2s;display:flex;align-items:center;gap:6px}.option-btn.active{background:linear-gradient(135deg, #667eea, #764ba2);border-color:#667eea;color:white}.quality-slider{display:flex;align-items:center;gap:16px}.quality-slider input{flex:1}.format-select{padding:10px 16px;border:1px solid var(--gray-200);border-radius:40px;background:white;width:100%}.color-picker-wrapper{display:flex;align-items:center;gap:12px}#bgColor{width:50px;height:40px;border:1px solid var(--gray-200);border-radius:12px;cursor:pointer}.preview-section{background:var(--gray-50);border-radius:28px;overflow:hidden;margin-bottom:28px}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:white;border-bottom:1px solid var(--gray-200)}.preview-container{min-height:300px;background:#1a1a2e;display:flex;align-items:center;justify-content:center;position:relative}.preview-placeholder{text-align:center;color:var(--gray-500);padding:60px}.preview-placeholder i{font-size:48px;margin-bottom:16px}.preview-video{max-width:100%;max-height:400px}.progress-container{margin-bottom:24px}.progress-bar{height:8px;background:var(--gray-200);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg, #667eea, #764ba2);width:0%;transition:width 0.3s}.progress-text{text-align:center;font-size:0.75rem;margin-top:8px;color:var(--gray-500)}.convert-btn{width:100%;padding:16px;font-size:1rem;border-radius:50px;background:linear-gradient(135deg, #667eea, #764ba2);margin-bottom:24px}.convert-result{background:linear-gradient(135deg, #d1fae5, #a7f3d0);border-radius:24px;padding:20px;margin-bottom:24px;animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid rgba(0,0,0,0.05)}.result-header span{font-weight:600;color:#065f46}.result-info{display:flex;flex-wrap:wrap;gap:24px}.result-info .info-item{display:flex;align-items:center;gap:8px;font-size:0.85rem}.info-footer-vertical{background:var(--gray-50);border-radius:28px;padding:24px;margin-top:16px}.info-footer-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;font-weight:600}.info-footer-steps{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px}.step-item{display:flex;gap:14px;align-items:flex-start}.step-number{width:36px;height:36px;background:#667eea;color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.step-content h4{font-size:0.9rem;margin-bottom:4px}.step-content p{font-size:0.7rem;color:var(--gray-500)}@media (max-width:900px){.options-grid-vertical{grid-template-columns:1fr}.info-footer-steps{grid-template-columns:repeat(2, 1fr)}}@media (max-width:480px){.info-footer-steps{grid-template-columns:1fr}}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}