.CourseSidebar-module__CzAPKa__sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);width:max-content;min-width:180px;max-width:380px;top:var(--topbar-height);height:calc(100vh - var(--topbar-height));flex-direction:column;flex-shrink:0;transition:background .25s,border-color .25s;display:flex;position:sticky;overflow:hidden}.CourseSidebar-module__CzAPKa__sidebarCollapsed{width:40px;min-width:40px}.CourseSidebar-module__CzAPKa__sidebarContent{opacity:1;flex-direction:column;flex:1;min-width:0;min-height:0;transition:opacity .15s;display:flex;overflow:hidden}.CourseSidebar-module__CzAPKa__sidebarCollapsed .CourseSidebar-module__CzAPKa__sidebarContent{opacity:0;pointer-events:none}.CourseSidebar-module__CzAPKa__sidebarToggle{z-index:10;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-card);width:26px;height:26px;color:var(--text-muted);cursor:pointer;flex-shrink:0;justify-content:center;align-items:center;transition:color .15s,border-color .15s,background .15s;display:flex;position:absolute;top:12px;right:6px}.CourseSidebar-module__CzAPKa__sidebarToggle:hover{color:var(--text-primary);border-color:var(--border-mid);background:var(--bg-card-hover)}.CourseSidebar-module__CzAPKa__toggleIconOpen{transition:transform .25s;transform:rotate(0)}.CourseSidebar-module__CzAPKa__toggleIconClosed{transition:transform .25s;transform:rotate(180deg)}.CourseSidebar-module__CzAPKa__sidebarHeader{border-bottom:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:.8rem;padding:1.25rem 1.25rem 1.1rem;display:flex}.CourseSidebar-module__CzAPKa__backLink{color:var(--text-muted);align-items:center;gap:.4rem;width:fit-content;font-size:.75rem;font-weight:500;text-decoration:none;transition:color .15s;display:inline-flex}.CourseSidebar-module__CzAPKa__backLink:hover{color:var(--text-secondary)}.CourseSidebar-module__CzAPKa__courseTitle{font-family:var(--font-display);color:var(--text-primary);letter-spacing:-.01em;font-size:.95rem;font-weight:700;line-height:1.3;text-decoration:none;display:block}.CourseSidebar-module__CzAPKa__courseTitle:hover{color:var(--accent)}.CourseSidebar-module__CzAPKa__searchWrap{align-items:center;margin:0 .75rem .5rem;display:flex;position:relative}.CourseSidebar-module__CzAPKa__searchIcon{color:var(--text-muted);pointer-events:none;flex-shrink:0;position:absolute;left:.55rem}.CourseSidebar-module__CzAPKa__searchInput{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);outline:none;padding:.35rem 2rem;font-size:.8rem;transition:border-color .15s}.CourseSidebar-module__CzAPKa__searchInput::placeholder{color:var(--text-muted)}.CourseSidebar-module__CzAPKa__searchInput:focus{border-color:var(--accent)}.CourseSidebar-module__CzAPKa__searchClear{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:3px;align-items:center;padding:2px;display:flex;position:absolute;right:.45rem}.CourseSidebar-module__CzAPKa__searchClear:hover{color:var(--text-primary)}.CourseSidebar-module__CzAPKa__searchEmpty{color:var(--text-muted);padding:.75rem 1.25rem;font-size:.8rem;font-style:italic}.CourseSidebar-module__CzAPKa__progressWrap{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:.4rem;padding:.8rem;display:flex}.CourseSidebar-module__CzAPKa__progressMeta{justify-content:space-between;align-items:center;display:flex}.CourseSidebar-module__CzAPKa__progressLabel{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);font-size:.65rem;font-weight:500}.CourseSidebar-module__CzAPKa__progressPct{font-family:var(--font-mono);color:var(--accent-text);font-size:.75rem;font-weight:500}.CourseSidebar-module__CzAPKa__progressTrack{background:var(--border);border-radius:99px;height:3px;overflow:hidden}.CourseSidebar-module__CzAPKa__progressFill{background:var(--accent);border-radius:99px;height:100%;transition:width .5s cubic-bezier(.4,0,.2,1)}.CourseSidebar-module__CzAPKa__progressSub{color:var(--text-secondary);font-size:.7rem}.CourseSidebar-module__CzAPKa__lessonNav{padding:0 .75rem calc(1rem + var(--banner-height));flex-direction:column;flex:1;gap:.1rem;min-height:0;display:flex;overflow:hidden auto}.CourseSidebar-module__CzAPKa__navSection{border-top:1px solid var(--border);flex-direction:column;gap:.1rem;padding:.75rem .75rem .5rem;display:flex}.CourseSidebar-module__CzAPKa__navLabel{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--text-secondary);flex-shrink:0;padding:.75rem 1.25rem .4rem;font-size:.62rem;font-weight:500}.CourseSidebar-module__CzAPKa__lessonLink{border-radius:var(--radius-sm);color:var(--text-primary);align-items:flex-start;gap:.65rem;padding:.4rem .5rem;font-size:.95rem;text-decoration:none;transition:background .15s,color .15s;display:flex}.CourseSidebar-module__CzAPKa__lessonLink:hover{background:var(--bg-card);color:var(--text-primary)}.CourseSidebar-module__CzAPKa__lessonLinkActive{background:var(--accent-soft)!important;color:var(--accent-text)!important}.CourseSidebar-module__CzAPKa__lessonIndex{font-family:var(--font-mono);color:var(--text-secondary);flex-shrink:0;align-items:center;width:1.5rem;padding-top:.2em;font-size:.65rem;display:flex}.CourseSidebar-module__CzAPKa__lessonLinkActive .CourseSidebar-module__CzAPKa__lessonIndex{color:var(--accent-text);opacity:.75}.CourseSidebar-module__CzAPKa__lessonLinkDone .CourseSidebar-module__CzAPKa__lessonIndex{color:var(--accent-text)}.CourseSidebar-module__CzAPKa__lessonTitle{flex:1;align-items:baseline;gap:.4rem;min-width:0;font-weight:500;display:flex}.CourseSidebar-module__CzAPKa__lessonTitleText{min-width:0}.CourseSidebar-module__CzAPKa__lessonTitle code{font-family:var(--font-mono);background:var(--accent-soft);color:var(--accent-text);border:1px solid var(--accent-glow);border-radius:3px;padding:.1em .35em;font-size:.78em;font-weight:400}.CourseSidebar-module__CzAPKa__tickSlot{flex-shrink:0;justify-content:center;align-items:center;width:16px;padding-top:.2em;display:flex}.CourseSidebar-module__CzAPKa__checkIcon{color:var(--accent-text);opacity:.8}.CourseSidebar-module__CzAPKa__exerciseBadge{font-size:.6rem;font-family:var(--font-mono);color:var(--text-muted);background:var(--bg-card);border:1px solid var(--border);letter-spacing:.03em;border-radius:3px;flex-shrink:0;padding:1px 4px;font-weight:700;line-height:1.4}.CourseSidebar-module__CzAPKa__lessonLinkActive .CourseSidebar-module__CzAPKa__exerciseBadge{color:var(--accent-text);background:var(--accent-soft);border-color:var(--accent-glow)}.CourseSidebar-module__CzAPKa__exerciseLink{opacity:.9}.CourseSidebar-module__CzAPKa__lessonLinkIndented{padding-left:1.1rem}.CourseSidebar-module__CzAPKa__chapterGroup{margin-top:.35rem;margin-bottom:.1rem}.CourseSidebar-module__CzAPKa__chapterHeader{border-radius:var(--radius-sm);cursor:pointer;text-align:left;width:100%;color:var(--text-primary);background:0 0;border:none;align-items:center;gap:.45rem;padding:.45rem .6rem;transition:background .15s;display:flex}.CourseSidebar-module__CzAPKa__chapterHeader:hover{background:var(--bg-card)}.CourseSidebar-module__CzAPKa__chapterChevron{color:var(--text-muted);flex-shrink:0;transition:transform .2s}.CourseSidebar-module__CzAPKa__chapterChevronCollapsed{transform:rotate(-90deg)}.CourseSidebar-module__CzAPKa__chapterTitle{letter-spacing:.02em;color:var(--text-primary);text-transform:uppercase;white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:.8rem;font-weight:700;overflow:hidden}.CourseSidebar-module__CzAPKa__chapterCount{font-family:var(--font-mono);color:var(--text-secondary);background:var(--bg-card);border:1px solid var(--border);border-radius:99px;flex-shrink:0;padding:1px 6px;font-size:.62rem}.CourseSidebar-module__CzAPKa__chapterSummary{color:var(--text-secondary);margin:0 0 .35rem;padding:0 .6rem 0 1.9rem;font-size:.75rem;font-style:italic;line-height:1.45}.CourseSidebar-module__CzAPKa__chapterItems{flex-direction:column;gap:.05rem;display:flex}.CourseSidebar-module__CzAPKa__resizeHandle{cursor:col-resize;z-index:20;width:6px;height:100%;position:absolute;top:0;right:-3px}.CourseSidebar-module__CzAPKa__resizeHandle:hover,.CourseSidebar-module__CzAPKa__resizeHandle:active{background:var(--accent);opacity:.4}@media (max-width:768px){.CourseSidebar-module__CzAPKa__sidebar{border-right:none;border-bottom:1px solid var(--border);width:100%;height:auto;min-height:44px;max-height:50vh;position:relative;top:0}.CourseSidebar-module__CzAPKa__sidebarCollapsed{max-height:44px}}
.layout-module__Pw4iVq__layout{top:var(--topbar-height);display:flex;position:fixed;bottom:0;left:0;right:0;overflow:hidden}.layout-module__Pw4iVq__content{flex:1;min-width:0;overflow-y:auto}@media (max-width:768px){.layout-module__Pw4iVq__layout{flex-direction:column}}