.course-content{display:flex;gap:24px;align-items:flex-start}.course-content-sidebar{width:100%;flex-shrink:0;display:flex;flex-direction:column;gap:12px;transition:width .3s ease;position:-webkit-sticky;position:sticky;top:0}.course-content:has(.course-lesson-view) .course-content-sidebar{width:300px}.course-content-title{font-size:20px;font-weight:700;margin:0}.course-content-summary{font-size:14px;color:var(--secondaryText);margin-bottom:8px}.course-module{display:flex;flex-direction:column;border:1px solid var(--surface1);border-radius:8px;overflow:hidden}.course-module-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--surface2);border:none;cursor:pointer;width:100%;text-align:left}.course-module-header:hover{background:var(--surface1)}.course-module-title{display:flex;align-items:center;gap:8px;font-weight:600;font-size:16px}.course-module-description{color:var(--secondaryText);line-height:1.4}.course-module-lesson-count{font-size:14px;color:var(--secondaryText)}.course-module-lessons{display:flex;flex-direction:column;padding:8px;gap:8px;overflow:hidden}.course-lesson{display:flex;align-items:stretch;gap:12px;padding:12px;border-radius:8px;cursor:pointer;transition:background .2s;background:transparent;border:none}.course-lesson:hover{background:var(--surface1)}.course-lesson.selected{background:var(--surface2);outline:1px solid var(--graph1)}.course-lesson:disabled{opacity:.7;cursor:not-allowed}.course-content-sidebar>.course-lesson{border:1px solid var(--surface1)}.course-lesson-thumbnail{position:relative;width:80px;height:45px;flex-shrink:0;border-radius:6px;overflow:hidden;background:var(--surface1)}.course-lesson-thumbnail img{width:100%;height:100%;object-fit:cover}.course-lesson-thumbnail-placeholder{width:100%;height:100%;background:var(--surface1)}.course-lesson-content{flex:1 1;display:flex;flex-direction:column;justify-content:space-between;gap:4px;min-width:0;text-align:start}.course-lesson-header{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.course-lesson-title{font-weight:600;font-size:14px;min-width:0}.course-lesson-free-preview{background:var(--primaryBrand);color:var(--primaryBrandText);padding:2px 8px;border-radius:12px;font-size:11px;font-weight:600;text-transform:uppercase}.course-lesson-description{color:var(--secondaryText);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-lesson-view{flex:1 1;display:flex;flex-direction:column;gap:24px;overflow-anchor:none}.course-lesson-video{border-radius:12px;overflow:hidden;aspect-ratio:16/9}.course-lesson-details{display:flex;flex-direction:column;gap:16px;padding:16px;border-radius:8px;border:1px solid var(--graph1);overflow-anchor:none}.course-lesson-details-header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.course-lesson-details-header h2{margin:0;font-size:24px;font-weight:700}.course-lesson-details-header-end{display:flex;align-items:center;gap:12px}.course-lesson-action{display:flex;align-self:center}.course-lesson-number{font-size:14px;color:var(--secondaryText);white-space:nowrap;padding:4px 8px;border-radius:12px;border:1px solid var(--graph2)}.course-lesson-details-description{font-size:16px;line-height:1.6;margin:0}.course-lesson-navigation{display:flex;justify-content:space-between;gap:16px;padding-top:16px;border-top:1px solid var(--graph1)}.course-lesson-navigation svg:dir(rtl){transform:rotate(180deg)}.courses-with-close-button{.course-content{flex-direction:column-reverse}.course-content:has(.course-lesson-view) .course-content-sidebar{width:100%}.course-lesson-view{width:100%}}@media (orientation:portrait){.course-content{flex-direction:column-reverse}.course-content-sidebar{position:relative}.course-content:has(.course-lesson-view) .course-content-sidebar{width:100%}.course-lesson-view{width:100%}}.course-enrollment{max-width:1200px;padding:20px;width:100%;align-self:center;display:flex;flex-direction:column;gap:32px}.course-swiper-container{position:relative;max-width:900px;width:100%;align-self:center}.course-swiper{height:50vh}.course-enrollment-content{display:flex;gap:40px;align-items:flex-start}.course-enrollment-main{flex:1 1;display:flex;flex-direction:column;gap:32px;overflow:hidden;width:100%}.course-enrollment-header h1{margin:0;font-size:32px;font-weight:700}.course-subtitle{margin:8px 0 0;font-size:18px;color:var(--secondaryText);font-weight:400}.course-about-section h2{font-size:24px;font-weight:700;margin:0 0 16px}.course-description{line-height:1.6}.course-description-link{color:var(--primaryBrand);text-decoration:none}.course-description-link:hover{text-decoration:underline}.course-instructor-section{display:flex;gap:16px;align-items:flex-start}.course-instructor-avatar{flex-shrink:0;width:80px;height:80px;border-radius:50%;overflow:hidden}.course-instructor-avatar img{width:100%;height:100%;object-fit:cover}.course-instructor-info h3{margin:0 0 8px;font-size:20px;font-weight:700}.course-instructor-bio{margin:0;color:var(--secondaryText);line-height:1.6}.course-enrollment-sidebar{width:350px;flex-shrink:0}.course-enrollment-sidebar:has(.course-price-section){position:-webkit-sticky;position:sticky;top:20px}.course-price-section{display:flex;flex-direction:column;gap:16px;padding:16px;background:var(--surface1);border-radius:12px;border:1px solid var(--graph1);text-align:center}.course-price-amount{font-size:32px;font-weight:700}.course-not-available{color:var(--secondaryText);font-size:14px}.course-enrollment-form{display:flex;flex-direction:column;gap:20px;width:100%}.course-enrollment-success{font-size:24px;text-align:center;white-space:pre-wrap}.form-part{display:flex;flex-direction:column;gap:16px;width:100%}.form-part h3{margin:0;font-size:24px;font-weight:700}.courses-with-close-button{.course-enrollment{max-width:100%;padding:16px;overflow-y:visible}.course-enrollment-content{flex-direction:column}.course-enrollment-sidebar{width:100%}.course-price-section{gap:8px;border-radius:0;border:none;padding:16px 0}.course-price-section .course-price-amount{font-size:24px}.course-enrollment-sidebar:has(.course-price-section){top:unset;bottom:0}.course-swiper{height:30vh}.course-enrollment-header h1{font-size:24px}.course-about-section h2{font-size:20px}}@media (orientation:portrait){.course-enrollment{padding:16px}.course-enrollment-content{flex-direction:column}.course-enrollment-sidebar{width:100%}.course-price-section{gap:8px}.course-price-section .course-price-amount{font-size:24px}.course-enrollment-sidebar:has(.course-price-section){top:unset;bottom:0}.course-swiper{height:30vh}}