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ease-in-out infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(200%)}}.footer{text-align:center;margin-top:40px;color:#555;font-size:.85rem}@media(max-width:768px){.logo h1{font-size:1.5rem}.input-section,.video-info{flex-direction:column}.thumbnail-wrapper{width:100%}.meta-info{flex-direction:column;gap:8px}.format-cards{flex-direction:column}.resolution-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}.audio-quality-grid{grid-template-columns:repeat(2,1fr)}.steps-track{gap:4px}.step-label{font-size:.6rem}}