/* Batch 7: mobile-first course experience */
.back-link{display:inline-block;margin:0 0 18px;color:var(--brand,#6558f5);text-decoration:none;font-weight:700}.course-showcase{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(230px,.8fr);gap:25px;align-items:stretch;padding:28px;border-radius:26px;background:linear-gradient(125deg,#25215c,#6251d8 58%,#00b8b0);color:#fff;margin-bottom:24px;overflow:hidden;box-shadow:0 18px 45px #241e6630}.course-showcase h1{font-size:clamp(1.6rem,3vw,2.7rem);line-height:1.14;margin:14px 0}.course-showcase p{color:#eef0ff}.course-chips,.course-metrics{display:flex;gap:9px;flex-wrap:wrap}.course-chips span{background:#ffffff27;border:1px solid #ffffff30;border-radius:100px;padding:6px 12px;font-size:.8rem}.course-metrics{margin:22px 0 12px}.course-metrics span{font-size:.86rem}.instructor-line{font-size:.91rem}.course-showcase .btn{display:inline-block;background:#fff;color:#3f34a8;margin-top:10px}.course-showcase-art{min-height:260px;display:grid;place-items:center;background:linear-gradient(135deg,#ffffff30,#ffffff08);border-radius:22px;overflow:hidden}.course-showcase-art img{width:100%;height:100%;max-height:380px;object-fit:cover;transition:transform .4s}.course-showcase-art:hover img{transform:scale(1.04)}.course-showcase-art>span{font-size:8rem;color:#ffffffbd}.course-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:22px;align-items:start}.course-main{display:grid;gap:20px;min-width:0}.course-info{padding:25px}.course-info h2{margin:0 0 16px}.outcomes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;list-style:none;padding:0}.outcomes li{background:#7777b010;border-radius:12px;padding:11px}.curriculum-list{margin-top:22px}.curriculum-lesson{border-bottom:1px solid #9994;padding:4px 0}.curriculum-lesson summary{cursor:pointer;display:flex;justify-content:space-between;gap:10px;padding:15px 3px;font-weight:650}.curriculum-lesson summary small{opacity:.65;white-space:nowrap}.lesson-body{padding:8px 5px 22px;line-height:1.7}.course-side-card{position:sticky;top:22px}.course-progress-number{font-size:2.5rem;color:var(--brand,#6558f5)}.review-item{border-top:1px solid #9994;padding:17px 0}.review-item .stars{color:#f2aa26;margin-left:12px}.review-item p{margin-bottom:0;overflow-wrap:anywhere}@media(max-width:850px){.course-detail-layout{grid-template-columns:1fr}.course-side{order:-1}.course-side-card{position:static}.course-showcase{grid-template-columns:1fr;padding:20px}.course-showcase-art{min-height:210px;max-height:280px;grid-row:1}.course-showcase h1{font-size:1.8rem}.outcomes{grid-template-columns:1fr}.course-info{padding:18px}}@media(prefers-reduced-motion:reduce){.course-showcase-art img{transition:none}}