/* تجربة المساق بتصميم منصة ED643 — كل القواعد محصورة داخل .cx حتى لا تتعارض مع بقية المنصة */
.cx{--num:"IBM Plex Sans Arabic",system-ui,sans-serif;--r-lg:22px}
.cx .fade{animation:cxfade .35s ease both}
@keyframes cxfade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* شريط تبويبات المساق */
.cx .ctabs{position:sticky;top:64px;z-index:30;background:rgba(252,250,240,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.cx .ctabs .in{max-width:1320px;margin:auto;padding:8px 22px;display:flex;gap:4px;align-items:center;overflow-x:auto;scrollbar-width:none}
.cx .ctabs a{padding:8px 16px;border-radius:999px;font-weight:500;font-size:15px;color:var(--muted);white-space:nowrap;display:inline-flex;gap:6px;align-items:center}
.cx .ctabs a:hover{background:var(--sky-2);color:var(--navy)}
.cx .ctabs a[aria-current=page]{background:var(--navy);color:#fff}
.cx .ctabs .code{font-weight:700;color:var(--navy);margin-inline-end:8px;direction:ltr;white-space:nowrap}
.cx .ctabs .end{margin-inline-start:auto}

/* البطل */
.cx .chero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.cx .chero .arcs{position:absolute;inset-inline-end:-120px;top:-60px;width:620px;height:620px;opacity:.9;pointer-events:none}
.cx .chero .in{position:relative;max-width:1320px;margin:auto;padding:56px 22px 72px;display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center}
.cx .crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px;color:var(--sky);margin-bottom:18px}
.cx .crumbs span+span::before{content:"‹";margin-inline-end:8px;opacity:.6}
.cx .chero h1{font-size:clamp(30px,4vw,48px);line-height:1.25;margin:0 0 6px;font-weight:700;color:#fff}
.cx .chero .sub{color:var(--sky);font-size:16px;margin-bottom:20px;font-weight:500}
.cx .chero p.lead{font-size:18px;color:#DCE5EF;max-width:62ch;margin:0 0 26px}
.cx .teacher{display:flex;align-items:center;gap:12px;margin-bottom:28px}
.cx .teacher .av{width:46px;height:46px;border-radius:50%;background:var(--sky);color:var(--navy);display:grid;place-items:center;font-weight:700;font-size:18px;flex-shrink:0}
.cx .teacher small{display:block;color:var(--sky);font-size:13px;line-height:1.3}
.cx .teacher b{font-size:16px}
.cx .cta{display:flex;flex-wrap:wrap;gap:12px}
.cx .btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.cx .btn-ghost:hover{background:rgba(255,255,255,.1)}
.cx .hcard{background:#fff;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.25);color:var(--ink)}
.cx .hcard .media{position:relative;display:block;aspect-ratio:16/10;background:linear-gradient(135deg,#0b1d3a,#1d4f82);overflow:hidden}
.cx .hcard .media img{width:100%;height:100%;object-fit:cover;display:block}
.cx .hcard .media .arcs{position:absolute;inset-inline-end:-140px;top:-140px;width:420px;height:420px}
.cx .hcard .media .play{position:absolute;inset:0;display:grid;place-items:center;background:linear-gradient(0deg,rgba(0,45,88,.55),transparent 60%)}
.cx .play-dot{width:68px;height:68px;border-radius:50%;background:#fff;display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.3);transition:transform .2s}
.cx .play-dot svg{width:26px;height:26px;color:var(--navy);margin-left:4px}
.cx .hcard .media:hover .play-dot{transform:scale(1.06)}
.cx .hcard .media .cap{position:absolute;bottom:14px;inset-inline-start:16px;color:#fff;font-weight:600;font-size:15px}
.cx .hcard .body{padding:18px 20px 20px}
.cx .hcard .row{display:flex;justify-content:space-between;font-size:14px;color:var(--muted);margin-bottom:8px;gap:10px}
.cx .pline{height:8px;border-radius:99px;background:var(--sky-2);overflow:hidden}
.cx .pline i{display:block;height:100%;background:var(--navy);border-radius:99px;transition:width .6s}

/* الإحصاءات */
.cx .stats{max-width:1320px;margin:-34px auto 0;position:relative;z-index:2;padding:0 22px}
.cx .stats .grid{display:grid;grid-template-columns:repeat(var(--n,5),1fr);background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.cx .stat{padding:20px 22px;border-inline-start:1px solid var(--line)}
.cx .stat:first-child{border-inline-start:0}
.cx .stat b{display:block;font-size:24px;color:var(--navy);line-height:1.2}
.cx .stat span{font-size:14px;color:var(--muted)}

/* أقسام الصفحة الرئيسة */
.cx .wrap2{max-width:1320px;margin:auto;padding:0 22px 60px}
.cx .csec{padding:48px 0 8px}
.cx .csec h2{font-size:28px;margin:0 0 6px;color:var(--navy)}
.cx .csec .hint{color:var(--muted);margin:0 0 24px}
.cx .two{display:grid;grid-template-columns:1.5fr 1fr;gap:28px;align-items:start}
.cx .outcomes{display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;margin:0;padding:0;list-style:none}
.cx .outcomes li{display:flex;gap:12px;align-items:flex-start}
.cx .outcomes li svg{width:22px;height:22px;color:var(--ok);margin-top:3px}
.cx .chips{display:flex;flex-wrap:wrap;gap:8px}
.cx .chip{padding:6px 14px;border-radius:999px;background:var(--sky-2);color:var(--navy);font-size:14px;font-weight:500}
.cx .tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--sky-2);color:var(--navy)}
.cx .tag.ok{background:var(--ok-bg);color:var(--ok)}.cx .tag.rem{background:#FDE8E3;color:#B53A23}.cx .tag.warn{background:var(--warn-bg);color:var(--warn)}
.cx .about{font-size:16px;line-height:1.9}
.cx .info-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.cx .info-list li{display:flex;gap:12px;align-items:flex-start}
.cx .info-list svg{width:20px;height:20px;color:var(--slate);margin-top:3px}

/* المخطط الدراسي */
.cx .syl{display:flex;flex-direction:column;gap:12px}
.cx .syl details{background:#fff;border:1px solid var(--line);border-radius:var(--r);transition:box-shadow .2s}
.cx .syl details[open]{box-shadow:var(--shadow)}
.cx .syl summary{list-style:none;display:grid;grid-template-columns:56px 1fr auto;gap:16px;align-items:center;padding:16px 20px;cursor:pointer}
.cx .syl summary::-webkit-details-marker{display:none}
.cx .syl .t small{display:block;color:var(--slate);font-size:13px;font-weight:500}
.cx .syl .t b{font-size:17px;line-height:1.45}
.cx .syl .meta{display:flex;gap:14px;align-items:center;color:var(--muted);font-size:14px}
.cx .syl .meta .chev{width:20px;height:20px;transition:.2s}
.cx .syl details[open] .chev{transform:rotate(180deg)}
.cx .syl .dbody{padding:0 20px 20px;padding-inline-start:92px}
.cx .syl .dbody p{margin:0 0 12px;color:var(--muted)}
.cx .unum{width:56px;height:56px;border-radius:14px;background:var(--sky-2);color:var(--navy);display:grid;place-items:center;font-weight:700;font-size:20px}
.cx .unum.done{background:var(--ok-bg);color:var(--ok)}
.cx .mini-list{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px;font-size:14px}
.cx .mini-list span{display:inline-flex;align-items:center;gap:6px}
.cx .mini-list svg{width:16px;height:16px;color:var(--slate)}
.cx .ann{display:grid;gap:12px}
.cx .ann .card{margin:0}

/* التخطيط بقائمة جانبية */
.cx .capp{max-width:1320px;margin:auto;display:grid;grid-template-columns:300px 1fr;gap:28px;padding:24px 22px 50px}
.cx .cside{position:sticky;top:130px;align-self:start;max-height:calc(100vh - 150px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px;scrollbar-width:thin}
.cx .cside h3{font-size:12.5px;letter-spacing:.4px;color:var(--slate);margin:14px 10px 6px;font-weight:600}
.cx .cside a{display:flex;gap:10px;align-items:center;padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--ink);line-height:1.45}
.cx .cside a:hover{background:var(--sky-2)}
.cx .cside a[aria-current=page]{background:var(--navy);color:#fff}
.cx .cside a svg{width:18px;height:18px;color:var(--slate)}
.cx .cside a[aria-current=page] svg{color:#fff}
.cx .sbadge{margin-inline-start:auto;font-weight:600;font-size:12px;background:var(--sky-2);color:var(--slate);padding:1px 8px;border-radius:99px}
.cx .cside a[aria-current=page] .sbadge{background:rgba(255,255,255,.18);color:#fff}
.cx .ring{--p:0;width:26px;height:26px;border-radius:50%;background:conic-gradient(var(--navy) calc(var(--p)*1%),var(--sky-2) 0);display:grid;place-items:center;flex-shrink:0}
.cx .ring::after{content:"";width:20px;height:20px;border-radius:50%;background:#fff;display:grid;place-items:center;font-size:11px;color:var(--ok)}
.cx .ring.full::after{content:"✓"}
.cx .cside a[aria-current=page] .ring::after{background:var(--navy);color:#fff}
.cx .cmain{min-width:0}

/* رأس الصفحة */
.cx .phead{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 28px;margin-bottom:20px;position:relative;overflow:hidden}
.cx .phead .arcs{position:absolute;inset-inline-end:-80px;top:-80px;width:280px;height:280px;opacity:.55;pointer-events:none}
.cx .phead small{color:var(--slate);font-weight:600}
.cx .phead h1{margin:4px 0 8px;font-size:clamp(24px,2.6vw,32px);color:var(--navy);line-height:1.35;position:relative}
.cx .phead p{margin:0;color:var(--muted);max-width:75ch;position:relative}
.cx .phead .pbar{display:flex;align-items:center;gap:14px;margin-top:18px;font-size:14px;color:var(--muted);position:relative;flex-wrap:wrap}
.cx .phead .pbar .pline{flex:1;max-width:340px;min-width:140px}

/* قوائم العناصر */
.cx .items{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.cx .irow{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;padding:16px 22px;border-top:1px solid var(--line);transition:background .15s;color:var(--ink)}
.cx .irow:first-child{border-top:0}
.cx .irow:hover{background:#FAFBFD}
.cx .irow .ki{width:44px;height:44px;border-radius:12px;background:var(--sky-2);color:var(--navy);display:grid;place-items:center}
.cx .irow .ki svg{width:20px;height:20px}
.cx .irow.k-assign .ki,.cx .irow.k-quiz .ki{background:#FDE7E2;color:var(--accent)}
.cx .irow.done .ki{background:var(--ok-bg);color:var(--ok)}
.cx .irow b{display:block;font-weight:600;font-size:16px;line-height:1.5;overflow-wrap:anywhere}
.cx .irow small{color:var(--muted);font-size:13.5px}
.cx .irow .st{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.cx .irow .check{width:24px;height:24px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center}
.cx .irow .check svg{width:14px;height:14px}
.cx .irow.done .check{background:var(--ok);border-color:var(--ok);color:#fff}
.cx .irow.hid{opacity:.55}
.cx .ilabel{padding:14px 22px;border-top:1px solid var(--line);background:var(--cream)}
.cx .ilabel:first-child{border-top:0}
.cx .unav{display:flex;justify-content:space-between;margin-top:18px;gap:10px}

/* المشغّل */
.cx .player{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.cx .player .ph{display:flex;align-items:center;gap:14px;padding:16px 22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.cx .player .ph .ki{width:40px;height:40px;border-radius:11px;background:var(--sky-2);color:var(--navy);display:grid;place-items:center;flex-shrink:0}
.cx .player .ph h2{margin:0;font-size:19px;line-height:1.45;color:var(--navy)}
.cx .player .ph small{color:var(--muted)}
.cx .player .pb{padding:22px}
.cx .pfoot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:16px 22px;border-top:1px solid var(--line);background:var(--cream)}
.cx .pfoot .nav{display:flex;gap:10px}
.cx .crumb{font-size:14px;color:var(--muted);margin-bottom:12px}

/* المحاضرات والمصادر */
.cx .seg2{display:inline-flex;background:#fff;border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px;margin-bottom:18px;flex-wrap:wrap}
.cx .seg2 button{padding:8px 16px;border-radius:9px;font-weight:500;font-size:14.5px;color:var(--muted)}
.cx .seg2 button[aria-pressed=true]{background:var(--navy);color:#fff}
.cx .vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.cx .vcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s;color:var(--ink)}
.cx .vcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.cx .thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--navy),#1d4f82);display:grid;place-items:center;overflow:hidden}
.cx .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cx .thumb .n{position:absolute;inset-inline-start:14px;top:10px;font-weight:700;font-size:34px;color:rgba(255,255,255,.18)}
.cx .thumb .play-dot{width:48px;height:48px;position:relative}
.cx .thumb .play-dot svg{width:18px;height:18px}
.cx .thumb .seen{position:absolute;inset-inline-end:10px;top:10px}
.cx .vcard .vb{padding:14px 16px}
.cx .vcard .vb b{display:block;font-size:15px;line-height:1.5}
.cx .vcard .vb small{color:var(--muted)}
.cx .search2{display:flex;align-items:center;gap:10px;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:0 14px;margin-bottom:14px;max-width:520px}
.cx .search2:focus-within{border-color:var(--slate)}
.cx .search2 input{flex:1;border:0;outline:0;padding:12px 0;background:none;box-shadow:none}
.cx .search2 svg{width:18px;height:18px;color:var(--slate)}
.cx .tma{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.cx .tma .card{display:flex;flex-direction:column;gap:12px;margin:0}
.cx .tma .due{display:flex;align-items:center;gap:12px;padding:14px;border-radius:12px;background:var(--cream);border:1px solid var(--line)}
.cx .tma .due svg{width:22px;height:22px;color:var(--slate)}
.cx .tma .due b{font-size:17px;color:var(--navy)}
.cx .tma .acts2{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;align-items:center}
.cx .sidetoggle{display:none}

@media (max-width:1100px){
  .cx .chero .in{grid-template-columns:1fr}
  .cx .stats .grid{grid-template-columns:repeat(3,1fr)}
  .cx .stat:nth-child(4){border-inline-start:0}
  .cx .stat:nth-child(n+4){border-top:1px solid var(--line)}
  .cx .two{grid-template-columns:1fr}
  .cx .capp{grid-template-columns:1fr}
  .cx .cside{position:static;max-height:none;display:none}
  .cx .cside.open{display:block}
  .cx .sidetoggle{display:inline-flex;margin-bottom:14px}
}
@media (max-width:680px){
  .cx .ctabs{top:56px}
  .cx .stats .grid{grid-template-columns:1fr 1fr}
  .cx .stat{border-inline-start:0!important;border-top:1px solid var(--line)}
  .cx .stat:first-child,.cx .stat:nth-child(2){border-top:0}
  .cx .outcomes,.cx .tma{grid-template-columns:1fr}
  .cx .irow{grid-template-columns:40px 1fr auto;gap:12px;padding:14px}
  .cx .irow .st span:last-child{display:none}
  .cx .syl summary{grid-template-columns:44px 1fr auto;gap:12px;padding:14px}
  .cx .unum{width:44px;height:44px;font-size:16px}
  .cx .syl .dbody{padding-inline-start:14px}
  .cx .chero .in{padding:36px 18px 60px}
}