/* Course browser: Course (grid) > Series > Lectures (pop-up). Used by the site video page, the dashboard
   and the watch-page playlist. Colours fall back through the dashboard / site variables so it looks native in both. */
.cb{--cb-accent:var(--primary,var(--d-navy-600,#1565c0));--cb-ink:var(--text-dark,var(--d-ink,#16202c));--cb-mute:var(--d-mute,#5b6b7d);--cb-line:var(--border-light,var(--d-line,#e4e8ee));--cb-soft:#f5f7fa;--cb-gold:var(--d-gold,#e8a93a)}

/* tools */
.cb-tools{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-bottom:.9rem}
.cb-search{position:relative;flex:1 1 300px}
.cb-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#9aa7b5}
.cb-search input{width:100%;padding:.7rem 2.4rem .7rem 2.6rem;border:2px solid var(--cb-line);border-radius:12px;font:inherit;background:#fff;color:var(--cb-ink)}
.cb-search input:focus,.cb-select:focus{outline:none;border-color:var(--cb-accent)}
.cb-clear{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:none;color:#9aa7b5;padding:6px 8px;cursor:pointer}
.cb-select{flex:0 1 210px;min-width:150px;padding:.7rem .8rem;border:2px solid var(--cb-line);border-radius:12px;font:inherit;background:#fff;color:var(--cb-ink)}
.cb-tabs{display:inline-flex;gap:4px;background:#e9edf3;border-radius:12px;padding:4px}
.cb-tabs button{border:0;background:none;padding:.5rem .9rem;border-radius:9px;font-weight:600;font-size:.85rem;color:var(--cb-mute);cursor:pointer}
.cb-tabs button.on{background:#fff;color:var(--cb-accent);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.cb-reset{border:0;background:none;color:var(--cb-accent);font-weight:700;font-size:.85rem;cursor:pointer;padding:.4rem .6rem}
.cb-count{font-size:.85rem;color:var(--cb-mute);margin:0 0 .75rem}

/* course grid */
.cb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}
.cb-card{display:flex;flex-direction:column;text-align:left;padding:0;border:1px solid var(--cb-line);border-radius:14px;background:#fff;overflow:hidden;cursor:pointer;font:inherit;color:var(--cb-ink);transition:transform .15s,box-shadow .15s,border-color .15s}
a.cb-card{text-decoration:none}
.cb-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px -16px rgba(8,27,48,.35);border-color:var(--cb-accent)}
.cb-card:focus-visible{outline:3px solid rgba(232,169,58,.6)}
.cb-thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#123a63,#1c4d80);display:grid;place-items:center;color:#fff;font-size:2rem;overflow:hidden}
.cb-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.cb-count-badge{position:absolute;right:8px;bottom:8px;background:rgba(8,27,48,.82);color:#fff;font-size:.72rem;font-weight:700;padding:.2rem .55rem;border-radius:999px}
.cb-info{display:flex;flex-direction:column;gap:.35rem;padding:.8rem .9rem 1rem;flex:1}
.cb-badges{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center;font-size:.7rem}
.cb-code{background:var(--cb-accent);color:#fff;padding:.15rem .55rem;border-radius:6px;font-weight:700}
.cb-pill{background:var(--cb-soft);color:var(--cb-mute);padding:.15rem .55rem;border-radius:999px;font-weight:600}
.cb-name{font-weight:700;font-size:.98rem;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cb-meta{font-size:.78rem;color:var(--cb-mute);margin-top:auto}
.cb-none{text-align:center;padding:3rem 1rem;color:var(--cb-mute)}
.cb-none i{font-size:2.2rem;opacity:.4;display:block;margin-bottom:.6rem}
.cb-more{display:flex;justify-content:center;margin-top:1.25rem}
.cb-more button{border:2px solid var(--cb-accent);background:#fff;color:var(--cb-accent);padding:.6rem 1.4rem;border-radius:10px;font-weight:700;cursor:pointer}
.cb-more button:hover{background:var(--cb-accent);color:#fff}

/* pop-up with the nested series / lectures */
.cb-modal{position:fixed;inset:0;z-index:2000;background:rgba(8,27,48,.6);display:flex;align-items:center;justify-content:center;padding:1rem}
.cb-modal[hidden]{display:none}
.cb-panel{background:#fff;border-radius:16px;width:min(760px,100%);max-height:calc(100vh - 2rem);display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 70px -20px rgba(0,0,0,.5)}
.cb-panel-head{display:flex;gap:.9rem;align-items:center;padding:1rem 1.1rem;border-bottom:1px solid var(--cb-line)}
.cb-panel-head .cb-pthumb{flex:0 0 96px;width:96px;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:linear-gradient(135deg,#123a63,#1c4d80)}
.cb-panel-head .cb-pthumb img{width:100%;height:100%;object-fit:cover;display:block}
.cb-ptitle{flex:1;min-width:0}
.cb-ptitle b{display:block;font-size:1.05rem;line-height:1.3}
.cb-ptitle small{color:var(--cb-mute)}
.cb-close{border:0;background:var(--cb-soft);width:38px;height:38px;border-radius:50%;font-size:1.2rem;cursor:pointer;color:var(--cb-mute);flex:0 0 38px}
.cb-close:hover{background:#e4e8ee}
.cb-panel-body{overflow:auto;padding:.4rem 1.1rem 1.2rem;background:var(--cb-soft)}

.cb-loading,.cb-empty{padding:1.5rem;text-align:center;color:var(--cb-mute);font-size:.9rem}
.cb-series{margin-top:.9rem}
.cb-series-title{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:.9rem;margin-bottom:.4rem;color:var(--cb-ink)}
.cb-series-title i{color:var(--cb-gold)}
.cb-series-title small{margin-left:auto;font-weight:500;color:var(--cb-mute)}
.cb-clips{list-style:none;margin:0;padding:0;background:#fff;border:1px solid var(--cb-line);border-radius:10px;overflow:hidden}
.cb-clips li+li{border-top:1px solid var(--cb-line)}
.cb-clips a{display:flex;align-items:center;gap:.7rem;padding:.6rem .8rem;color:var(--cb-ink);text-decoration:none;font-size:.9rem}
.cb-clips a:hover{background:#f0f5fc}
.cb-clips a.current{background:#fdf3e1;box-shadow:inset 3px 0 0 var(--cb-gold);font-weight:700}
.cb-num{flex:0 0 26px;height:26px;border-radius:50%;background:var(--cb-soft);color:var(--cb-mute);display:grid;place-items:center;font-size:.75rem;font-weight:700}
.cb-ct{flex:1;min-width:0}
.cb-dur{color:var(--cb-mute);font-size:.78rem;white-space:nowrap}
.cb-nar{font-size:.7rem;padding:.1rem .45rem;border-radius:999px;background:#e6eefa;color:var(--cb-accent);font-weight:700}
.cb-nar.female{background:#fde8f1;color:#b83280}
.cb-play{color:var(--cb-accent)}

/* compact playlist (watch page sidebar) */
.cb-playlist{background:#fff;border:1px solid var(--cb-line);border-radius:14px;padding:1rem}
.cb-playlist h6{margin:0 0 .2rem;font-weight:800}
.cb-playlist .cb-sub{font-size:.78rem;color:var(--cb-mute);margin-bottom:.4rem}
.cb-playlist .cb-scroll{max-height:420px;overflow:auto;margin-right:-.4rem;padding-right:.4rem}

@media (max-width:575px){
  .cb-grid{grid-template-columns:repeat(2,1fr);gap:.7rem}
  .cb-info{padding:.6rem .65rem .8rem}
  .cb-name{font-size:.88rem}
  .cb-select{flex:1 1 45%}
  .cb-modal{padding:0;align-items:flex-end}
  .cb-panel{border-radius:16px 16px 0 0;max-height:92vh;width:100%}
  .cb-panel-head .cb-pthumb{flex-basis:72px;width:72px}
}
@media (max-width:380px){.cb-grid{grid-template-columns:1fr}}