/* Shared YouTube, About and long-form content presentation */
.youtube-section,
.about-preview-section {
    --content-ink: #111c34;
    --content-muted: #627089;
    --content-line: rgba(48, 65, 95, 0.13);
    --content-primary: #5b5ce2;
    --content-surface: rgba(255,255,255,.86);
}

.learning-youtube-section,
.learning-about-section {
    --content-ink: var(--navy-950, #03102a);
    --content-muted: var(--muted, #59708e);
    --content-line: var(--line, rgba(7,62,125,.13));
    --content-primary: var(--blue-600, #0878d8);
}

.learning-youtube-section,
.learning-about-section { padding: clamp(4.5rem, 8vw, 7rem) 0; }
.learning-youtube-section { background: #fff; }
.learning-about-section { background: linear-gradient(180deg, #edf8ff, #f9fcff); }

.youtube-heading-row,
.about-preview-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
}
.youtube-channel-link,
.about-page-link {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: .68rem 1rem;
    border: 1px solid color-mix(in srgb, var(--content-primary) 26%, transparent);
    border-radius: 999px;
    color: var(--content-primary);
    background: var(--content-surface);
    font-size: .82rem;
    font-weight: 800;
    text-decoration: none;
}
.youtube-channel-link:hover,
.about-page-link:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(21,34,65,.10); }

.youtube-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    margin-top: 2.25rem;
}
.youtube-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--content-line);
    border-radius: 1.3rem;
    background: var(--content-surface);
    box-shadow: 0 16px 42px rgba(20,34,61,.08);
}
.youtube-thumb { position: relative; display: block; overflow: hidden; aspect-ratio: 16/9; background: #09172f; }
.youtube-thumb img { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform .4s ease; }
.youtube-card:hover .youtube-thumb img { transform: scale(1.045); }
.youtube-play {
    position: absolute;
    inset: 50% auto auto 50%;
    translate: -50% -50%;
    display: grid;
    place-items: center;
    width: 3.25rem;
    aspect-ratio: 1;
    padding-left: .16rem;
    border-radius: 50%;
    color: #fff;
    background: #ff0033;
    box-shadow: 0 10px 28px rgba(0,0,0,.28);
}
.youtube-card-copy { padding: 1rem 1.1rem 1.15rem; }
.youtube-card-copy time { display: block; margin-bottom: .45rem; color: var(--content-muted); font-size: .7rem; }
.youtube-card-copy h3 { margin: 0; font: 750 1rem/1.4 'Space Grotesk', var(--display, sans-serif); overflow-wrap: anywhere; }
.youtube-card-copy h3 a { color: var(--content-ink); text-decoration: none; }
.youtube-card-copy h3 a:hover { color: var(--content-primary); }
.youtube-feed-state {
    margin: 2rem 0 0;
    padding: 1.15rem;
    border: 1px dashed var(--content-line);
    border-radius: 1rem;
    color: var(--content-muted);
    background: rgba(255,255,255,.58);
    text-align: center;
}
.youtube-feed-state[hidden] { display: none; }
.youtube-feed-state a { color: var(--content-primary); font-weight: 800; }

.about-preview-section[hidden] { display: none !important; }
.about-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    margin-top: 2.25rem;
}
.about-summary-card {
    min-width: 0;
    padding: clamp(1.2rem, 3vw, 1.65rem);
    border: 1px solid var(--content-line);
    border-radius: 1.3rem;
    background: var(--content-surface);
    box-shadow: 0 16px 42px rgba(20,34,61,.07);
}
.about-summary-card span { color: var(--content-primary); font-size: .75rem; font-weight: 850; letter-spacing: .12em; }
.about-summary-card h3 { margin: .65rem 0 .45rem; color: var(--content-ink); font: 750 1.15rem/1.3 'Space Grotesk', var(--display, sans-serif); }
.about-summary-card p { margin: 0; color: var(--content-muted); font-size: .9rem; line-height: 1.65; overflow-wrap: anywhere; }
.about-preview-grid,
.about-page-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    margin-top: 2.25rem;
}
.about-profile-card {
    min-width: 0;
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 1.1rem;
    align-items: start;
    padding: 1.2rem;
    border: 1px solid var(--content-line, rgba(48,65,95,.13));
    border-radius: 1.3rem;
    background: var(--content-surface, #fff);
    box-shadow: 0 16px 42px rgba(20,34,61,.07);
}
.about-profile-photo,
.about-profile-initial { width: 112px; aspect-ratio: 1; border-radius: 1rem; object-fit: cover; }
.about-profile-initial { display: grid; place-items: center; color: #fff; background: linear-gradient(145deg, var(--content-primary, #5b5ce2), #0ca6c8); font: 800 2.1rem/1 'Space Grotesk', sans-serif; }
.about-profile-copy { min-width: 0; }
.about-profile-copy h3 { margin: 0; color: var(--content-ink, #111c34); font: 750 1.08rem/1.3 'Space Grotesk', var(--display, sans-serif); }
.about-profile-role { margin: .3rem 0 0; color: var(--content-primary, #5b5ce2) !important; font-weight: 800; }
.about-profile-experience { margin: .38rem 0 0; font-size: .78rem; font-weight: 700; }
.about-profile-copy > p:last-child { margin: .65rem 0 0; color: var(--content-muted, #627089); font-size: .86rem; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.about-profile-card-full .about-profile-copy > p { color: #627089; font-size: .88rem; line-height: 1.65; }
.about-profile-card-full .about-profile-copy > p:last-child { display: block; overflow: visible; -webkit-line-clamp: initial; }
.about-profile-detail { margin-top: .65rem; overflow-wrap: anywhere; }
.about-profile-detail strong { color: #26344e; }

/* Standalone About and News article pages */
.content-page { margin: 0; min-height: 100vh; color: #13213b; background: linear-gradient(180deg, #f6f9ff, #fff); font-family: 'Outfit', 'DM Sans', sans-serif; }
.content-page *, .content-page *::before, .content-page *::after { box-sizing: border-box; }
.content-page-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(47,63,91,.10); background: rgba(255,255,255,.88); backdrop-filter: blur(18px); }
.content-page-nav { width: min(1120px, calc(100% - 2rem)); min-height: 70px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.content-page-brand { color: #16203a; font: 800 1.2rem/1 'Space Grotesk', sans-serif; letter-spacing: .08em; text-decoration: none; }
.content-page-links { display: flex; align-items: center; gap: 1rem; }
.content-page-links a { color: #53617a; font-size: .86rem; font-weight: 700; text-decoration: none; }
.content-page-links a:hover { color: #5b5ce2; }
.content-page-main { width: min(1120px, calc(100% - 2rem)); margin: auto; padding: clamp(3.5rem, 8vw, 7rem) 0; }
.content-page-eyebrow { margin: 0 0 .8rem; color: #5b5ce2; font-size: .74rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.content-page h1 { max-width: 900px; margin: 0; color: #101b33; font: 800 clamp(2rem, 6vw, 4.5rem)/1.03 'Space Grotesk', sans-serif; letter-spacing: -.045em; overflow-wrap: anywhere; }
.content-page-lead { max-width: 780px; margin: 1.2rem 0 0; color: #5e6d86; font-size: clamp(1rem, 2vw, 1.2rem); line-height: 1.7; }
.content-page-meta { display: flex; flex-wrap: wrap; gap: .65rem 1.15rem; margin-top: 1.2rem; color: #69778e; font-size: .82rem; }
.content-hero-image { width: 100%; max-height: 580px; margin-top: 2rem; border-radius: 1.5rem; object-fit: cover; box-shadow: 0 22px 65px rgba(21,34,65,.13); }
.article-shell { width: min(820px, 100%); margin: 2rem auto 0; padding: clamp(1.25rem, 4vw, 2.3rem); border: 1px solid rgba(47,63,91,.10); border-radius: 1.4rem; background: #fff; box-shadow: 0 18px 54px rgba(21,34,65,.08); }
.article-body { color: #33415a; font-size: 1rem; line-height: 1.85; white-space: pre-line; overflow-wrap: anywhere; }
.article-source { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid #e8edf5; }
.article-source a { color: #5b5ce2; font-weight: 800; }
.article-back { display: inline-flex; margin-top: 1.5rem; color: #5b5ce2; font-weight: 800; text-decoration: none; }
.about-page-intro { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: 2rem; align-items: end; }
.about-facts { padding: 1.25rem; border: 1px solid rgba(47,63,91,.1); border-radius: 1.25rem; background: #fff; box-shadow: 0 15px 45px rgba(21,34,65,.07); }
.about-facts p { margin: 0; color: #5e6d86; line-height: 1.65; }
.about-facts p + p { margin-top: .75rem; }
.about-page-team { margin-top: 4rem; }
.about-page-team h2 { margin: 0; color: #14213a; font: 800 clamp(1.6rem, 4vw, 2.5rem)/1.1 'Space Grotesk', sans-serif; }
.about-page-empty { margin-top: 1.5rem; padding: 1.2rem; border: 1px dashed rgba(47,63,91,.18); border-radius: 1rem; color: #66758e; background: rgba(255,255,255,.6); }
.content-page-footer { padding: 1.4rem 1rem; border-top: 1px solid rgba(47,63,91,.1); color: #6a7890; text-align: center; font-size: .82rem; }

@media (max-width: 900px) {
    .youtube-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .about-page-intro { grid-template-columns: minmax(0, 1fr); align-items: start; }
}
@media (max-width: 680px) {
    .youtube-heading-row, .about-preview-heading { align-items: flex-start; flex-direction: column; }
    .youtube-channel-link, .about-page-link { width: 100%; }
    .youtube-grid, .about-summary-grid, .about-preview-grid, .about-page-grid { grid-template-columns: minmax(0, 1fr); gap: 1rem; margin-top: 1.5rem; }
    .about-profile-card { grid-template-columns: 84px minmax(0, 1fr); padding: 1rem; }
    .about-profile-photo, .about-profile-initial { width: 84px; }
    .content-page-links a:nth-child(2) { display: none; }
    .content-page-main { padding-top: 2.5rem; }
}
@media (max-width: 420px) {
    .about-profile-card { grid-template-columns: minmax(0, 1fr); }
    .about-profile-photo, .about-profile-initial { width: 100%; max-height: 260px; }
}
@media (prefers-reduced-motion: reduce) {
    .youtube-thumb img, .youtube-channel-link, .about-page-link { transition: none; }
}

/* Dashboard-fed About and YouTube horizontal rails */
.content-heading-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: .7rem;
}
.content-rail-controls {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
}
.content-rail-controls button {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid color-mix(in srgb, var(--content-primary) 24%, transparent);
    border-radius: 50%;
    color: var(--content-primary);
    background: var(--content-surface);
    box-shadow: 0 10px 26px rgba(21,34,65,.08);
    font: 800 1rem/1 system-ui, sans-serif;
    cursor: pointer;
    transition: transform .2s ease, color .2s ease, background .2s ease, opacity .2s ease;
}
.content-rail-controls button:hover:not(:disabled),
.content-rail-controls button:focus-visible {
    color: #fff;
    background: var(--content-primary);
    transform: translateY(-2px);
}
.content-rail-controls button:focus-visible { outline: 3px solid color-mix(in srgb, var(--content-primary) 24%, transparent); outline-offset: 2px; }
.content-rail-controls button:disabled { opacity: .3; cursor: default; box-shadow: none; }

.content-rail {
    display: flex !important;
    grid-template-columns: none !important;
    gap: 1.1rem;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: inline mandatory;
    scroll-padding-inline: .1rem;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--content-primary) 38%, transparent) transparent;
    padding: .15rem .1rem .85rem;
}
.content-rail::-webkit-scrollbar { height: 7px; }
.content-rail::-webkit-scrollbar-track { background: transparent; }
.content-rail::-webkit-scrollbar-thumb { border-radius: 999px; background: color-mix(in srgb, var(--content-primary) 38%, transparent); }
.content-rail > * { scroll-snap-align: start; }

.youtube-grid.content-rail { margin-top: 2.25rem; }
.youtube-grid.content-rail .youtube-card {
    flex: 0 0 clamp(280px, 31vw, 390px);
    display: flex;
    flex-direction: column;
}
.youtube-card-copy { display: flex; flex: 1; flex-direction: column; }
.youtube-card-copy h3 { margin-bottom: .55rem; }
.youtube-card-copy > p {
    display: -webkit-box;
    margin: 0;
    overflow: hidden;
    color: var(--content-muted);
    font-size: .84rem;
    line-height: 1.55;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.youtube-watch-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    width: fit-content;
    margin-top: auto;
    padding-top: .85rem;
    color: var(--content-primary);
    font-size: .78rem;
    font-weight: 850;
    text-decoration: none;
}

.about-preview-grid.content-rail { margin-top: 2.25rem; }
.about-preview-grid.content-rail .about-profile-card {
    flex: 0 0 clamp(360px, 47vw, 590px);
    grid-template-columns: 132px minmax(0, 1fr);
    min-height: 260px;
    padding: 1.3rem;
}
.about-profile-media { min-width: 0; }
.about-preview-grid .about-profile-photo,
.about-preview-grid .about-profile-initial {
    width: 132px;
    border-radius: 1.1rem;
}
.about-profile-heading { padding-bottom: .75rem; border-bottom: 1px solid var(--content-line); }
.about-profile-heading h3 { font-size: 1.2rem; }
.about-profile-role { margin-top: .28rem !important; }
.about-profile-experience {
    display: inline-flex;
    margin-top: .75rem;
    padding: .35rem .62rem;
    border-radius: 999px;
    color: var(--content-ink);
    background: color-mix(in srgb, var(--content-primary) 9%, transparent);
    font-size: .76rem;
}
.about-profile-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; margin-top: .8rem; }
.about-profile-detail {
    min-width: 0;
    margin: 0;
    padding: .65rem .72rem;
    border: 1px solid var(--content-line);
    border-radius: .85rem;
    background: color-mix(in srgb, var(--content-surface) 78%, transparent);
}
.about-profile-detail span { display: block; color: var(--content-primary); font-size: .62rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.about-profile-detail p { display: -webkit-box; margin: .28rem 0 0; overflow: hidden; color: var(--content-muted); font-size: .76rem; line-height: 1.45; white-space: pre-line; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.about-profile-bio { display: -webkit-box; margin: .8rem 0 0 !important; overflow: hidden; color: var(--content-muted); font-size: .84rem; line-height: 1.6; white-space: pre-line; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.about-feed-state {
    margin: 2rem 0 0;
    padding: 1.15rem;
    border: 1px dashed var(--content-line);
    border-radius: 1rem;
    color: var(--content-muted);
    background: rgba(255,255,255,.58);
    text-align: center;
}
.about-feed-state[hidden] { display: none; }

@media (max-width: 680px) {
    .content-heading-actions { width: 100%; justify-content: space-between; }
    .content-heading-actions .youtube-channel-link { width: auto; }
    .youtube-grid.content-rail,
    .about-preview-grid.content-rail { margin-top: 1.5rem; }
    .youtube-grid.content-rail .youtube-card { flex-basis: min(84vw, 340px); }
    .about-preview-grid.content-rail .about-profile-card {
        flex-basis: min(88vw, 390px);
        grid-template-columns: 88px minmax(0, 1fr);
        min-height: 0;
        padding: 1rem;
    }
    .about-preview-grid .about-profile-photo,
    .about-preview-grid .about-profile-initial { width: 88px; max-height: none; }
    .about-profile-facts { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 420px) {
    .content-heading-actions { align-items: stretch; flex-direction: column; }
    .content-heading-actions .youtube-channel-link { width: 100%; }
    .content-rail-controls { align-self: flex-end; }
    .about-preview-grid.content-rail .about-profile-card { grid-template-columns: 76px minmax(0, 1fr); }
    .about-preview-grid .about-profile-photo,
    .about-preview-grid .about-profile-initial { width: 76px; }
}

@media (prefers-reduced-motion: reduce) {
    .content-rail { scroll-behavior: auto; }
    .content-rail-controls button { transition: none; }
}