.skeleton-sidebar.svelte-b2l3r{width:var(--sidebar-expanded-width, 260px);height:100%;display:flex;flex-direction:column;background:var(--theme-surface-background, var(--surface-background, var(--color-white)));border-right:1px solid var( --skeleton-border-color, color-mix(in oklch, var(--theme-text-primary, currentColor) 10%, transparent) );overflow:hidden;flex-shrink:0}.skeleton-sidebar-collapsed.svelte-b2l3r{width:var(--sidebar-collapsed-width, 80px);align-items:center}@keyframes svelte-b2l3r-skeleton-pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes svelte-b2l3r-fade-slide-in{0%{opacity:0;transform:translate(-8px)}to{opacity:1;transform:translate(0)}}@keyframes svelte-b2l3r-fade-in{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.skeleton-sidebar.svelte-b2l3r [class*=skeleton-]:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .nav-icon:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .nav-text:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .course-icon:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .course-text:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .section-label:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-avatar:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-name:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-email:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-menu-btn:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .collapsed-nav-icon:where(.svelte-b2l3r){background:color-mix(in oklch,var(--theme-text-primary, currentColor) 10%,transparent);animation:svelte-b2l3r-skeleton-pulse var(--skeleton-animation-duration, 1.5s) var(--skeleton-animation-easing, ease-in-out) infinite;border-radius:var(--radius-md)}.collapsed-header.svelte-b2l3r{padding:var(--space-4);display:flex;justify-content:center}.collapsed-new-chat.svelte-b2l3r{padding:var(--space-2) var(--space-3);display:flex;justify-content:center}.skeleton-new-chat-icon.svelte-b2l3r{width:44px;height:44px;border-radius:var(--radius-lg);background:linear-gradient(135deg,color-mix(in oklch,var(--color-accent, var(--theme-accent)) 70%,transparent),color-mix(in oklch,var(--color-accent, var(--theme-accent)) 50%,transparent),color-mix(in oklch,var(--color-accent, var(--theme-accent)) 70%,transparent))!important;background-size:200% 100%!important}.collapsed-nav.svelte-b2l3r{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);padding:var(--space-3) 0}.collapsed-nav-icon.svelte-b2l3r{width:36px;height:36px;border-radius:var(--radius-md);opacity:0;animation:svelte-b2l3r-fade-in .3s ease-out forwards,svelte-b2l3r-skeleton-pulse var(--skeleton-animation-duration, 1.5s) var(--skeleton-animation-easing, ease-in-out) infinite;animation-delay:var(--delay, 0ms)}.collapsed-footer.svelte-b2l3r{padding:var(--space-4);display:flex;justify-content:center;border-top:1px solid color-mix(in oklch,var(--theme-text-primary, currentColor) 10%,transparent);background:linear-gradient(to top,color-mix(in oklch,var(--theme-text-primary, currentColor) 5%,transparent),transparent)}.skeleton-user-avatar.svelte-b2l3r{width:40px;height:40px;border-radius:var(--avatar-border-radius, var(--shape-avatar, var(--radius-full)));background:linear-gradient(135deg,color-mix(in oklch,var(--color-primary-500, var(--color-primary-500)) 40%,transparent),color-mix(in oklch,var(--color-accent-500) 30%,transparent),color-mix(in oklch,var(--color-primary-500, var(--color-primary-500)) 40%,transparent))!important;background-size:200% 100%!important}.sidebar-header.svelte-b2l3r{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:1px solid color-mix(in oklch,var(--theme-text-primary, currentColor) 10%,transparent)}.logo-area.svelte-b2l3r{display:flex;align-items:center;gap:var(--space-3)}.skeleton-logo.svelte-b2l3r{width:36px;height:36px;border-radius:var(--radius-lg)}.skeleton-brand.svelte-b2l3r{width:90px;height:22px;border-radius:var(--radius-sm)}.skeleton-collapse-btn.svelte-b2l3r{width:32px;height:32px;border-radius:var(--radius-md);opacity:.7}.new-chat-area.svelte-b2l3r{padding:var(--space-3) var(--space-4)}.skeleton-new-chat-btn.svelte-b2l3r{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);background:linear-gradient(90deg,color-mix(in oklch,var(--color-accent, var(--theme-accent)) 50%,transparent),color-mix(in oklch,var(--color-accent, var(--theme-accent)) 35%,transparent),color-mix(in oklch,var(--color-accent, var(--theme-accent)) 50%,transparent))!important;background-size:200% 100%!important}.skeleton-new-chat-btn.svelte-b2l3r 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100%!important}.profile-info.svelte-b2l3r{flex:1;display:flex;flex-direction:column;gap:var(--space-1);min-width:0}.profile-name.svelte-b2l3r{width:100px;height:14px;border-radius:var(--radius-sm)}.profile-email.svelte-b2l3r{width:70px;height:11px;border-radius:var(--radius-sm);opacity:.7}.profile-menu-btn.svelte-b2l3r{width:28px;height:28px;border-radius:var(--radius-md);flex-shrink:0}@media (prefers-reduced-motion: reduce){.skeleton-sidebar.svelte-b2l3r [class*=skeleton-]:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .nav-icon:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .nav-text:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .course-icon:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .course-text:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .section-label:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-avatar:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r .profile-name:where(.svelte-b2l3r),.skeleton-sidebar.svelte-b2l3r 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saturate(180%);-webkit-backdrop-filter:blur(12px) saturate(180%);border:1px solid color-mix(in oklch,var(--color-accent, var(--theme-accent)) 30%,transparent);box-shadow:0 8px 32px color-mix(in oklch,var(--theme-text-primary, currentColor) 10%,transparent),0 0 0 1px color-mix(in oklch,var(--color-accent, var(--theme-accent)) 10%,transparent) inset;animation:svelte-1hpuw2e-fab-breathe 4s ease-in-out infinite}.fab-glow.svelte-1hpuw2e{position:absolute;bottom:-8px;left:50%;transform:translate(-50%);width:60%;height:8px;background:radial-gradient(ellipse at center,color-mix(in oklch,var(--color-accent, var(--theme-accent)) 60%,transparent),transparent 70%);filter:blur(8px);animation:svelte-1hpuw2e-fab-attention-pulse 3s ease-in-out infinite;pointer-events:none}@keyframes svelte-1hpuw2e-fab-breathe{0%,to{transform:translate(-50%) scale(1) translateZ(0);box-shadow:0 8px 32px color-mix(in oklch,var(--theme-text-primary, currentColor) 10%,transparent),0 0 0 1px color-mix(in oklch,var(--color-accent, var(--theme-accent)) 10%,transparent) inset}50%{transform:translate(-50%) scale(1.03) translateZ(0);box-shadow:0 12px 40px color-mix(in oklch,var(--theme-text-primary, currentColor) 15%,transparent),0 0 0 1px color-mix(in oklch,var(--color-accent, var(--theme-accent)) 15%,transparent) inset}}@keyframes svelte-1hpuw2e-fab-attention-pulse{0%,to{opacity:.3;transform:translate(-50%) scale(.9)}50%{opacity:.9;transform:translate(-50%) scale(1.3)}}@media (max-width: 640px){.fab-skeleton.svelte-1hpuw2e{bottom:var(--space-4, 1rem)}}.ambient-glow.svelte-1hpuw2e{position:fixed;top:-50%;right:-25%;width:80%;height:80%;background:radial-gradient(ellipse at center,color-mix(in oklch,var(--theme-primary, var(--color-primary)) 12%,transparent) 0%,transparent 70%);pointer-events:none;z-index:0;opacity:.5;animation:svelte-1hpuw2e-ambient-pulse 8s ease-in-out infinite}@keyframes svelte-1hpuw2e-ambient-pulse{0%,to{opacity:.4;transform:scale(1)}50%{opacity:.6;transform:scale(1.05)}}@media (prefers-reduced-motion: reduce){.app-shell-skeleton.svelte-1hpuw2e{animation:none;opacity:1}.ambient-glow.svelte-1hpuw2e{animation:none;opacity:.5}.fab-skeleton.svelte-1hpuw2e{animation:none}.fab-glow.svelte-1hpuw2e{animation:none;opacity:.6}}