.lecture-sidebar.svelte-1hnugul{--gold: #e8b943;--gold-100: #faecb8;--teal: #3a8f8f;--teal-50: #f0fafa;width:300px;position:sticky;top:0;align-self:stretch;min-height:calc(100vh - 3.5rem - 256px);max-height:100vh;overflow-y:auto;background:#f7f1e4;border-left:1px solid #ead9b8;padding:32px 24px 48px}.sidebar-section.svelte-1hnugul{padding:22px 0;border-bottom:1px solid #ead9b8}.sidebar-section.svelte-1hnugul:first-child{padding-top:0}.sidebar-section.svelte-1hnugul:last-child{border-bottom:0;padding-bottom:0}.sidebar-heading.svelte-1hnugul{margin:0 0 12px}.display-section.svelte-1hnugul{padding-top:0}.display-controls.svelte-1hnugul{display:flex;flex-direction:column;gap:8px}.display-toggle.svelte-1hnugul{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:36px;padding:0 12px;border:1px solid #ead9b8;border-radius:999px;background:#ffffff94;color:#1f5566;font-size:13px;font-weight:600;line-height:1.2;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.display-toggle.svelte-1hnugul input:where(.svelte-1hnugul){position:absolute;opacity:0;pointer-events:none}.display-switch.svelte-1hnugul{position:relative;flex:0 0 auto;width:34px;height:20px;border-radius:999px;background:#ead9b8;transition:background .16s ease}.display-switch.svelte-1hnugul:after{content:"";position:absolute;top:3px;left:3px;width:14px;height:14px;border-radius:999px;background:#fff;box-shadow:0 1px 3px #0d3c4d33;transition:transform .16s ease}.display-toggle.svelte-1hnugul input:where(.svelte-1hnugul):checked+.display-switch:where(.svelte-1hnugul){background:var(--teal)}.display-toggle.svelte-1hnugul input:where(.svelte-1hnugul):checked+.display-switch:where(.svelte-1hnugul):after{transform:translate(14px)}.display-toggle.svelte-1hnugul:focus-within{outline:2px solid #66d9d9;outline-offset:2px}.reveal-button.svelte-1hnugul{display:inline-flex;align-items:center;justify-content:space-between;gap:8px;width:100%;min-height:36px;padding:0 12px;border-radius:999px;border:1px solid transparent;background:#fff;color:#1f5566;font-size:13px;font-weight:600;line-height:1.2;text-align:left;cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease}.reveal-button--hint.svelte-1hnugul{border-color:#f5dc88;color:#997725}.reveal-button--hint.active.svelte-1hnugul{background:var(--gold-100);border-color:var(--gold);color:#6e561a}.reveal-button--solution.svelte-1hnugul{border-color:#99e5e5;color:#2b6b6b}.reveal-button--solution.active.svelte-1hnugul{background:var(--teal-50);border-color:var(--teal);color:#1c4848}.reveal-check.svelte-1hnugul{flex:0 0 auto;font-weight:800;line-height:1}.metadata-grid.svelte-1hnugul{display:grid;grid-template-columns:max-content 1fr;-moz-column-gap:12px;column-gap:12px;row-gap:8px;margin:0}.metadata-grid.svelte-1hnugul dt:where(.svelte-1hnugul){color:#6b8893;font-size:12px;line-height:1.4;font-weight:500}.metadata-grid.svelte-1hnugul dd:where(.svelte-1hnugul){min-width:0;margin:0;color:#0d3c4d;font-size:13px;line-height:1.35}.metadata-grid.svelte-1hnugul a:where(.svelte-1hnugul){color:#2b6b6b;text-decoration:none}.metadata-grid.svelte-1hnugul a:where(.svelte-1hnugul):hover{text-decoration:underline}.metadata-uuid.svelte-1hnugul{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:11px!important;word-break:break-all;color:#6b8893!important}.video-embed.svelte-1hnugul{position:relative;display:block;aspect-ratio:16 / 9;border-radius:8px;overflow:hidden;background:#f5efe0;box-shadow:inset 0 0 0 1px #ead9b8}.video-embed.svelte-1hnugul iframe:where(.svelte-1hnugul){position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.video-direct-link.svelte-1hnugul{display:inline-flex;margin-top:8px;color:#2b6b6b;font-size:12px;font-weight:600;line-height:1.3;text-decoration:none}.video-direct-link.svelte-1hnugul:hover{text-decoration:underline}.similar-list.svelte-1hnugul{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;padding:0}.similar-link.svelte-1hnugul{display:flex;align-items:flex-start;gap:8px;padding:7px 0;color:#0d3c4d;text-decoration:none}.similar-link.svelte-1hnugul:hover .similar-title:where(.svelte-1hnugul){color:#2b6b6b}.similar-chip.svelte-1hnugul{flex:0 0 auto;padding:2px 7px;font-size:10px;line-height:1.2}.similar-title.svelte-1hnugul{min-width:0;font-family:Georgia,Times New Roman,serif;font-size:14px;line-height:1.25;transition:color .15s ease}@media (max-width: 900px){.lecture-sidebar.svelte-1hnugul{display:none}}.lecture-subheader.svelte-1itu6pj{--bg: #ffffff;--sh-1: 0 1px 3px rgba(13, 60, 77, .12);--r-pill: 999px;--gold: #e8b943;--gold-100: #faecb8;--teal: #3a8f8f;--teal-50: #f0fafa;background:#fbf8ef;border-bottom:0}.lecture-top-row.svelte-1itu6pj{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:10px}.lecture-metadata.svelte-1itu6pj{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:0}.lecture-actions.svelte-1itu6pj{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}.mode-switch.svelte-1itu6pj{display:inline-flex;align-items:center;gap:2px;padding:3px;border-radius:var(--r-pill);background:#f5efe0;border:1px solid #ead9b8}.mode-switch.svelte-1itu6pj button:where(.svelte-1itu6pj){min-height:30px;padding:0 12px;border:0;border-radius:var(--r-pill);background:transparent;color:#1f5566;font-size:13px;font-weight:500;line-height:1;cursor:pointer;transition:background .16s ease,color .16s ease,box-shadow .16s ease}.mode-switch.svelte-1itu6pj button.active:where(.svelte-1itu6pj){background:var(--bg);box-shadow:var(--sh-1);color:#0d3c4d;font-weight:600}.lecture-action.svelte-1itu6pj{height:34px;gap:5px;white-space:nowrap}.lecture-primary-action.svelte-1itu6pj{display:inline-flex}.lecture-primary-action.svelte-1itu6pj .add-to-list-btn{min-height:34px;border-color:#3a8f8f;background:#3a8f8f;color:#fff;box-shadow:none}.lecture-primary-action.svelte-1itu6pj .add-to-list-btn:hover:not(:disabled){background:#2b6b6b;border-color:#2b6b6b;color:#fff}.lecture-immersive-bar.svelte-1itu6pj{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 24px;height:44px;background:#fbf8efeb;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid #ead9b8}.immersive-exit-btn.svelte-1itu6pj{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 10px;border:0;border-radius:var(--r-pill);background:transparent;color:#1f5566;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s ease,color .15s ease}.immersive-exit-btn.svelte-1itu6pj:hover{background:#f5efe0;color:#0d3c4d}.immersive-bar-right.svelte-1itu6pj{display:inline-flex;align-items:center;gap:6px}.immersive-action--active.svelte-1itu6pj{background:#f0fafa!important;color:#2b6b6b!important}.lecture-metadata--immersive.svelte-1itu6pj{margin-bottom:12px}.lecture-title-band.svelte-1itu6pj{padding:20px 32px 24px}.lecture-title-inner.svelte-1itu6pj{max-width:none}.lecture-subheader--immersive.svelte-1itu6pj .lecture-title-inner:where(.svelte-1itu6pj){max-width:720px;margin:0 auto}.lecture-subheader--immersive.svelte-1itu6pj .lecture-title-band:where(.svelte-1itu6pj){padding:32px 32px 28px}.lecture-stars.svelte-1itu6pj{display:inline-flex;align-items:center}.lecture-facts.svelte-1itu6pj{color:#6b8893}.lecture-title.svelte-1itu6pj{max-width:880px;margin:0;color:#0d3c4d;line-height:1.08}.lecture-title--classic.svelte-1itu6pj{font-size:36px}.lecture-title--immersive.svelte-1itu6pj{font-size:44px}.reveal-controls.svelte-1itu6pj{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:26px}.reveal-button.svelte-1itu6pj{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:0 12px;border-radius:var(--r-pill);border:1px solid transparent;background:#fff;color:#1f5566;font-size:13px;font-weight:600;cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease}.reveal-button--hint.svelte-1itu6pj{border-color:#f5dc88;color:#997725}.reveal-button--hint.active.svelte-1itu6pj{background:var(--gold-100);border-color:var(--gold);color:#6e561a}.reveal-button--solution.svelte-1itu6pj{border-color:#99e5e5;color:#2b6b6b}.reveal-button--solution.active.svelte-1itu6pj{background:var(--teal-50);border-color:var(--teal);color:#1c4848}.reveal-check.svelte-1itu6pj{font-weight:800;line-height:1}@media (max-width: 860px){.lecture-immersive-bar.svelte-1itu6pj{padding:0 16px}.lecture-top-row.svelte-1itu6pj{flex-direction:column;align-items:flex-start;gap:10px}.lecture-actions.svelte-1itu6pj{flex-wrap:wrap}.mode-switch.svelte-1itu6pj{width:100%}.mode-switch.svelte-1itu6pj button:where(.svelte-1itu6pj){flex:1}.lecture-primary-action.svelte-1itu6pj .add-to-list-btn{width:auto;height:34px;padding:.5rem .75rem;border-radius:.5rem}.lecture-primary-action.svelte-1itu6pj .add-to-list-text{display:inline}.lecture-title-band.svelte-1itu6pj{padding:24px 16px 20px}.lecture-subheader--compact-mobile.svelte-1itu6pj .lecture-title-band:where(.svelte-1itu6pj),.lecture-subheader--compact-mobile.lecture-subheader--immersive.svelte-1itu6pj .lecture-title-band:where(.svelte-1itu6pj){padding:18px 16px 14px}.lecture-subheader--compact-mobile.svelte-1itu6pj .lecture-metadata--immersive:where(.svelte-1itu6pj){gap:6px;margin-bottom:8px}.lecture-title--classic.svelte-1itu6pj,.lecture-title--immersive.svelte-1itu6pj{font-size:clamp(28px,8vw,36px)}.lecture-subheader--compact-mobile.svelte-1itu6pj .lecture-title--classic:where(.svelte-1itu6pj),.lecture-subheader--compact-mobile.svelte-1itu6pj .lecture-title--immersive:where(.svelte-1itu6pj){font-size:clamp(26px,7vw,34px)}}
