/* ScoreStory — the video course (layouts/course.njk): the overview and the
   lesson pages. */

.co-crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;font-size:.86rem;color:var(--muted);margin-bottom:24px}
.co-crumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}
.co-crumbs a{color:var(--muted);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}
.co-crumbs a:hover{color:var(--navy)}
.co-lede{font-size:1.12rem;color:var(--muted);max-width:62ch;margin-top:14px}
.co-progress{font-size:.9rem;font-weight:600;color:var(--green-deep)}

/* Overview */
.co-hero{padding:40px 0 56px;background:radial-gradient(90% 70% at 100% 0%,rgba(19,163,125,.12),transparent 60%),var(--white);border-bottom:1px solid var(--line)}
.co-hero .eyebrow{margin-bottom:14px}
.co-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:56px;align-items:center}
.co-hero-thumb{box-shadow:var(--shadow-lg);transform:rotate(1.2deg)}
.co-hero-thumb:hover img{transform:scale(1.03)}
.co-title{font-size:clamp(2.2rem,4.6vw,3.5rem);color:var(--navy);max-width:20ch}
.co-meta{margin-top:18px;font-size:.92rem;font-weight:600;color:var(--navy)}
.co-hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px 24px;margin-top:28px}
.co-hero-actions .btn svg{width:18px;height:18px}

.co-list-section{padding:56px 0 24px}
.co-list{list-style:none;display:grid;gap:22px}
.co-item{position:relative;display:grid;grid-template-columns:minmax(0,400px) minmax(0,1fr);gap:32px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:box-shadow .25s ease}
.co-item:hover{box-shadow:var(--shadow-lg)}
.co-thumb{position:relative;display:block;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--navy)}
.co-thumb img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.co-item:hover .co-thumb img{transform:scale(1.03)}
/* The play button sits right of centre: the poster is the video's title
   card, whose title runs across the left half. */
.co-play{position:absolute;left:80%;top:50%;transform:translate(-50%,-50%);width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--green-deep);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(13,32,73,.3);transition:transform .2s ease}
.co-item:hover .co-play{transform:translate(-50%,-50%) scale(1.08)}
.co-play svg{margin-left:3px}
.co-duration{position:absolute;right:10px;bottom:10px;background:rgba(13,32,73,.85);color:#fff;font-size:.78rem;font-weight:600;padding:3px 8px;border-radius:6px;font-variant-numeric:tabular-nums}
.co-item-kicker{display:flex;align-items:center;gap:12px;font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--green-deep)}
.co-item h2{font-size:clamp(1.4rem,2.4vw,1.8rem);color:var(--navy);margin-top:8px}
.co-item h2 a::after{content:"";position:absolute;inset:0}
.co-item p:last-child{color:var(--muted);margin-top:10px;max-width:60ch}
.co-watched{display:none;align-items:center;gap:4px;letter-spacing:0;text-transform:none;font-weight:600;font-size:.8rem;color:var(--green-deeper);background:var(--green-tint);border-radius:999px;padding:2px 9px}
.is-watched .co-watched{display:inline-flex}

/* Lesson */
.co-lesson{padding-top:32px;padding-bottom:24px}
.co-lesson-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.co-player{border-radius:16px;overflow:hidden;background:var(--navy);box-shadow:var(--shadow-lg);aspect-ratio:16/9}
.co-player video{display:block;width:100%;height:100%}
.co-lang-note{margin-top:12px;font-size:.88rem;color:var(--muted);background:var(--blue-tint);border-radius:10px;padding:10px 14px}
.co-lesson-eyebrow{margin-top:32px}
.co-lesson-title{font-size:clamp(1.9rem,3.6vw,2.7rem);color:var(--navy);margin-top:12px}
.co-mark{display:inline-flex;align-items:center;gap:10px;margin-top:22px;min-height:44px;padding:8px 16px 8px 10px;border:1.5px solid var(--line);border-radius:999px;background:#fff;font:inherit;font-weight:600;font-size:.92rem;color:var(--navy);cursor:pointer;transition:border-color .2s,background .2s}
.co-mark:hover{border-color:var(--green)}
.co-mark-box{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;border:1.5px solid var(--line);color:transparent;transition:.2s}
.co-mark[aria-pressed="true"]{background:var(--green-tint);border-color:var(--green)}
.co-mark[aria-pressed="true"] .co-mark-box{background:var(--green-deep);border-color:var(--green-deep);color:#fff}
.co-h2{font-size:1.4rem;color:var(--navy);margin:40px 0 14px}
.co-learn{list-style:none;display:grid;gap:10px}
.co-learn li{display:flex;gap:12px;align-items:flex-start;font-size:1.02rem;line-height:1.5}
.co-learn svg{flex:none;margin-top:4px;width:18px;height:18px;padding:3px;border-radius:50%;background:var(--green-tint);color:var(--green-deeper)}
.co-read{margin-top:36px;padding:22px 24px;border-radius:14px;background:#F5F7FB;border:1px solid var(--line)}
.co-read h2{font-size:1.2rem;color:var(--navy)}
.co-read p{color:var(--muted);margin-top:6px;font-size:.95rem}
.co-read ul{list-style:none;margin-top:10px;display:grid;gap:4px}
.co-read a{color:var(--green-deep);font-weight:600;text-decoration:underline;text-decoration-color:var(--line-green);text-underline-offset:3px;display:inline-block;padding:4px 0}
.co-read a:hover{text-decoration-color:currentColor}
.co-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.co-pager a{display:block;border:1px solid var(--line);border-radius:14px;padding:16px 20px;color:var(--navy);font-weight:600;transition:border-color .2s,box-shadow .2s}
.co-pager a:hover{border-color:var(--green);box-shadow:var(--shadow)}
.co-pager span{display:block;font-size:.76rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.co-pager-prev span::before{content:"← "}
.co-pager-next{grid-column:2;text-align:right}
.co-pager-next span::after{content:" →"}

.co-side{position:sticky;top:100px;border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}
.co-side-title{font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.co-side-title a:hover{color:var(--navy)}
.co-side .co-progress{margin-top:6px;font-size:.84rem}
.co-playlist{list-style:none;margin-top:12px;display:grid;gap:4px}
.co-playlist a{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;color:var(--ink);transition:background .2s}
.co-playlist a:hover{background:var(--blue-tint)}
.co-playlist a.active{background:var(--green-tint)}
.co-playlist-num{flex:none;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:#F5F7FB;font-weight:700;font-size:.85rem;color:var(--navy)}
.co-playlist a.active .co-playlist-num{background:var(--green-deep);color:#fff}
.co-playlist-text{flex:1;min-width:0}
.co-playlist-title{display:block;font-weight:600;font-size:.9rem;line-height:1.3;color:var(--navy)}
.co-playlist-time{display:block;font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums}
.co-playlist-tick{flex:none;display:none;color:var(--green-deep)}
.co-playlist .is-watched .co-playlist-tick{display:inline-flex}

/* Closing call to action */
.co-cta{padding:48px 0 96px}
.co-cta-box{text-align:center;background:linear-gradient(155deg,var(--navy) 0%,var(--green) 100%);border-radius:28px;padding:52px 32px;color:#fff;box-shadow:var(--shadow-lg)}
.co-cta-box h2{font-size:clamp(1.8rem,3.2vw,2.4rem)}
.co-cta-box p{color:rgba(255,255,255,.86);font-size:1.05rem;margin:12px auto 26px;max-width:50ch}

@media(max-width:1000px){
  .co-lesson-grid{grid-template-columns:minmax(0,1fr)}
  .co-hero-grid{grid-template-columns:minmax(0,1fr)}
  .co-hero-thumb{display:none}
  .co-side{position:static}
}
@media(max-width:760px){
  .co-item{grid-template-columns:minmax(0,1fr);gap:18px;padding:14px}
}
@media(max-width:560px){
  .co-hero{padding:28px 0 40px}
  .co-pager{grid-template-columns:minmax(0,1fr)}
  .co-pager-next{grid-column:1}
  .co-cta-box{padding:40px 22px}
  .co-player{border-radius:12px}
}