.course-card{background:#101010;border:1px solid #222;border-radius:12px;padding:1rem;display:flex;flex-direction:column;justify-content:space-between;transition:transform .2s ease,box-shadow .2s ease;cursor:pointer}.course-card:hover{transform:translateY(-4px);box-shadow:0 4px 16px rgba(0,0,0,.25)}.course-title{font-size:1.1rem;font-weight:600;margin:.5rem 0 .4rem;color:#fff;line-height:1.25}.course-title-link{color:inherit;text-decoration:none}.course-title-link:hover{text-decoration:underline}.meta-chips{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:.35rem}.chip{border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);color:rgba(255,255,255,.8);border-radius:9999px;padding:.15rem .5rem;font-size:.72rem}.chip.subtle{opacity:.8}.instructor-info{display:flex;align-items:center;gap:.5rem;color:#bbb;font-size:.9rem;margin-bottom:.35rem}.instructor-info .avatar{width:24px;height:24px;background:linear-gradient(135deg,#f6098f66,#5b5b5b);border-radius:50%}.rating-row{margin-bottom:.6rem;min-height:1.1rem}.rating{color:#f5c518;font-size:.9rem}.rating.new{color:#9adfff;font-size:.9rem}.price-add{display:flex;justify-content:space-between;align-items:center}.price{color:#00ffcc;font-weight:700}.add-to-cart{background:linear-gradient(90deg,#00ffcc,#1c99fe);border:none;border-radius:6px;color:#000;padding:.4rem .8rem;font-weight:600;cursor:pointer;transition:background .3s ease,transform .15s ease}.add-to-cart:hover{background:linear-gradient(90deg,#1c99fe,#00ffcc)}.add-to-cart:active{transform:translateY(1px)}.thumbnail-wrapper{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:12px;margin-bottom:10px}.thumbnail-image,.thumbnail-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:12px;pointer-events:none;transition:opacity .4s ease-in-out;will-change:opacity}.thumbnail-image{opacity:1;z-index:1}.thumbnail-video{opacity:0;z-index:2}.course-card:hover .thumbnail-video{opacity:1}.course-card:hover .thumbnail-image{opacity:0}.thumbnail-wrapper.show-video .thumbnail-video{opacity:1}.thumbnail-wrapper.show-video .thumbnail-image{opacity:0}