/* ==========================================================================
   PrayogX Learn — the school portal (Classes 9–12): class, subject, chapter
   and topic (video) pages. Loaded after site/site.css, whose colour tokens it
   reuses, so Learn and the JEE library read as one product.

   Design rules: one accent per subject (no gradients), line icons, generous
   spacing, 16px+ body text, 44px touch targets, visible focus, and motion that
   is small, purposeful and off under reduced motion.
   ========================================================================== */

body.learn{font-size:16px;line-height:1.6}
.learn .inner{max-width:1100px}
.skip{position:absolute;left:-999px;top:8px;z-index:50;padding:10px 14px;border-radius:10px;background:var(--accent);color:#fff;font-weight:700}
.skip:focus{left:12px}
.learn a:focus-visible,.learn button:focus-visible,.learn input:focus-visible,.learn select:focus-visible{
  outline:3px solid color-mix(in srgb,var(--accent) 70%,transparent);outline-offset:2px;border-radius:10px}
.ico,.pi{flex:none;display:inline-block;vertical-align:middle}

.learn-kick{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--c,var(--text-muted))}
.crumbs{margin:18px 0 6px;font-size:14px;color:var(--text-muted);display:flex;flex-wrap:wrap;gap:2px 6px;align-items:center}
.crumbs a{color:var(--text-secondary);text-decoration:none;padding:6px 0}
.crumbs a:hover{color:var(--accent);text-decoration:underline}
.crumbs .sep{color:var(--line-strong)}
.crumbs [aria-current]{color:var(--text-primary);font-weight:600}
.navlinks{display:flex;gap:4px;align-items:center}
.navlinks a{font-size:14px;text-decoration:none;color:var(--text-secondary);padding:10px 10px;border-radius:9px}
.navlinks a:hover{color:var(--accent);background:var(--surface-2)}
.navlinks .themebtn{min-width:40px;min-height:40px}
.site-foot .inner a{color:var(--text-secondary)}

/* ---------- headings ---------- */
.lhead{margin:20px 0 14px}
.lhead h1{margin:2px 0 6px;font-size:30px;line-height:1.15;font-weight:780;letter-spacing:-.01em}
.lhead p{margin:0;color:var(--text-secondary);max-width:720px}
.pick{font-size:13px;color:var(--text-muted);margin:22px 0 10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.sect{margin:30px 0 0}
.sect > h2{font-size:21px;margin:0 0 12px;font-weight:740}
.sect h3{font-size:17px;margin:18px 0 6px;font-weight:680}
.sect p{margin:8px 0;max-width:760px}
.soon{color:var(--text-muted);font-size:15px;margin:6px 0}

/* ---------- shared card behaviour ---------- */
.classcard,.subjcard,.chapcard,.vcard{transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}
.classcard:hover,.subjcard:hover,.chapcard:hover,.vcard:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,0,0,.07)}
.go{flex:none;color:var(--text-muted);transition:transform .16s ease,color .16s ease}
a:hover > .go{color:var(--c,var(--accent));transform:translateX(3px)}

/* ---------- portal: class cards ---------- */
.classgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:14px;margin:6px 0 4px}
.classcard{--c:var(--accent);display:flex;gap:16px;align-items:center;padding:18px;border-radius:16px;min-height:44px;
  border:1px solid var(--line);background:var(--surface-1);text-decoration:none;color:inherit}
.classcard[data-class="class-9"]{--c:#2a78d6}
.classcard[data-class="class-10"]{--c:#d9542b}
.classcard[data-class="class-11"]{--c:#16956a}
.classcard[data-class="class-12"]{--c:#5b48c4}
.classcard[data-class="extra"]{--c:#b7791f}
.classcard:hover{border-color:var(--c)}
.classcard .num{flex:none;width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:30px;font-weight:800;color:#fff;background:var(--c)}
.classcard .cbody{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1}
.classcard .t{font-size:20px;font-weight:760;line-height:1.2}
.classcard .s{font-size:14.5px;color:var(--text-secondary);line-height:1.45}
.classcard .m{font-size:13px;color:var(--c);font-weight:700}
.classcard .m.soon{color:var(--text-muted);font-weight:600;margin:0}
.pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;padding:3px 9px 3px 7px;border-radius:999px;
  background:color-mix(in srgb,var(--c) 10%,var(--surface-1));color:var(--c);font-weight:650}

/* ---------- class page: subject cards ---------- */
.subjgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.subjcard{display:flex;align-items:center;gap:14px;padding:18px;border-radius:16px;border:1px solid var(--line);
  background:var(--surface-1);text-decoration:none;color:inherit}
.subjcard:hover{border-color:var(--c)}
.sic{flex:none;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  color:var(--c);background:color-mix(in srgb,var(--c) 12%,var(--surface-1))}
.sic .ico{width:30px;height:30px}
.subjcard .sb{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}
.subjcard .t{font-size:20px;font-weight:760}
.subjcard .s{font-size:13.5px;color:var(--text-secondary)}
.subjcard .m{font-size:13px;color:var(--text-muted);margin-top:2px}

/* ---------- subject page ---------- */
.subjhead{display:flex;gap:14px;align-items:center}
.subjhead .sic{width:60px;height:60px}
.viewtabs{display:inline-flex;gap:4px;padding:4px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);margin:4px 0 16px}
.viewtabs button{font:inherit;font-weight:650;font-size:15px;min-height:42px;padding:8px 18px;border-radius:9px;border:0;background:transparent;color:var(--text-secondary);cursor:pointer}
.viewtabs button[aria-selected="true"]{background:var(--surface-1);color:var(--text-primary);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.chapgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:10px}
.chapcard{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:14px;border:1px solid var(--line);
  background:var(--surface-1);text-decoration:none;color:inherit;min-height:64px}
.chapcard:hover{border-color:var(--c)}
.chapcard .cn{flex:none;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:#fff;background:var(--c)}
.chapcard.quiet .cn{background:var(--surface-2);color:var(--text-secondary)}
.chapcard .cb{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}
.chapcard .t{font-weight:700;line-height:1.3}
.chapcard .s{font-size:13.5px;color:var(--text-secondary);line-height:1.4}
.chapcard .row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:3px;font-size:12.5px}
.chapcard .have{color:var(--good);font-weight:700}
.chapcard .none{color:var(--text-muted)}
.chapcard .plan{color:var(--text-muted)}
.chapcard .plan::before{content:"·";margin-right:6px}
.chapcard:target{border-color:var(--c);box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 25%,transparent)}
.disc{font-size:11.5px;padding:1px 8px;border-radius:999px;background:color-mix(in srgb,var(--c) 12%,var(--surface-1));color:var(--c);font-weight:700}
.tfilter{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 10px}
.tfilter input{flex:1 1 260px;min-width:0;min-height:46px;font:inherit;padding:10px 14px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-1);color:var(--text-primary)}
.tfilter select{font:inherit;min-height:46px;padding:9px 10px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-1);color:var(--text-primary);max-width:100%}
.fchip{font:inherit;font-size:14px;min-height:42px;padding:8px 14px;border-radius:999px;border:1px solid var(--line-strong);background:var(--surface-2);color:var(--text-secondary);cursor:pointer}
.fchip[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.tcount{font-size:14px;color:var(--text-muted);margin:0 0 8px}

/* ---------- chapter page ---------- */
.chaphead .meta{color:var(--text-muted);font-size:14px;margin-top:6px}
.cta{display:inline-flex;align-items:center;gap:8px;margin-top:14px;min-height:46px;padding:10px 18px;border-radius:12px;
  background:var(--c,var(--accent));color:#fff;text-decoration:none;font-weight:700;max-width:100%}
.cta:hover{filter:brightness(1.06)}
.tlist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.trow{border-radius:14px;border:1px solid var(--line);background:var(--surface-1)}
.trow a,.trow.soon{display:flex;align-items:center;gap:12px;padding:10px 14px;min-height:56px;text-decoration:none;color:inherit}
.trow.have a:hover{background:color-mix(in srgb,var(--c,var(--accent)) 6%,var(--surface-1));border-radius:14px}
.trow.have{border-color:color-mix(in srgb,var(--c,var(--accent)) 35%,var(--line))}
.trow .tn{flex:none;width:28px;text-align:right;font-weight:700;color:var(--text-muted);font-variant-numeric:tabular-nums}
.trow .tthumb{flex:none;width:45px;height:80px;border-radius:7px;object-fit:cover;background:#111}
.trow .tb{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}
.trow .t{font-weight:650;line-height:1.3}
.trow .s{font-size:13.5px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.trow .watch{flex:none;display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:10px;background:var(--c,var(--accent));color:#fff;font-weight:700;font-size:14px}
.trow.soon{background:transparent;border-style:dashed}
.trow.soon .t{color:var(--text-secondary);font-weight:500}
.trow .tag{flex:none;font-size:12px;color:var(--text-muted);border:1px solid var(--line);border-radius:999px;padding:2px 9px}
.chapnav{display:flex;justify-content:space-between;gap:10px;margin:26px 0 0;flex-wrap:wrap}
.chapnav a{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface-1);text-decoration:none;color:var(--text-secondary);font-weight:600;max-width:100%}
.chapnav a:hover{border-color:var(--accent);color:var(--accent)}
.backrow{margin:14px 0 0}
.backrow a{display:inline-flex;align-items:center;gap:6px;min-height:44px;text-decoration:none;font-weight:600}

/* ---------- video cards (lists, search results, related) ---------- */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px}
.vcard{display:flex;gap:12px;padding:10px;border-radius:14px;border:1px solid var(--line);background:var(--surface-1);text-decoration:none;color:inherit;min-width:0}
.vcard:hover{border-color:var(--c)}
.thumbwrap{position:relative;flex:none;width:68px;height:120px;border-radius:9px;overflow:hidden;background:#111;display:flex;align-items:center;justify-content:center;color:#fff}
.thumbwrap .thumb{width:100%;height:100%;object-fit:cover;display:block}
.playdot{position:absolute;right:5px;bottom:5px;width:24px;height:24px;border-radius:50%;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;color:#fff}
.vcard .vbody{display:flex;flex-direction:column;gap:4px;min-width:0}
.vcard .t{font-weight:700;line-height:1.3}
.vcard .s{font-size:13.5px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.vcard .m{font-size:12px;color:var(--text-muted);margin-top:auto;letter-spacing:.02em}
.vcard[hidden],.chapcard[hidden]{display:none}

/* ---------- topic (video) page ---------- */
.topic{margin:0 0 28px}
.watch{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:28px;align-items:start;margin-top:8px}
@media (max-width:820px){.watch{grid-template-columns:minmax(0,1fr);gap:16px}}
.video{position:relative;width:min(100%,380px,calc(70vh * 9 / 16));margin:0 auto;aspect-ratio:9/16;background:#000;border-radius:16px;overflow:hidden}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-alt{font-size:13.5px;margin:8px 0 0;color:var(--text-muted);text-align:center}
.thead{margin:6px 0 14px}
.thead h1{margin:8px 0 0;font-size:28px;line-height:1.2;font-weight:780}
.side .lede{font-size:16.5px;color:var(--text-secondary);margin:0 0 16px}
.chip{display:inline-block;font-size:12.5px;padding:3px 10px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);color:var(--text-secondary)}
.chip.subj{border-color:color-mix(in srgb,var(--c) 40%,var(--line));color:var(--c);font-weight:650;background:color-mix(in srgb,var(--c) 8%,var(--surface-1))}
.dl{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface-1);text-decoration:none;color:inherit;min-height:56px}
.dl:hover{border-color:var(--accent)}
.dl .ico{width:42px;height:42px;border-radius:11px;padding:9px;background:color-mix(in srgb,var(--accent) 12%,var(--surface-1));color:var(--accent)}
.dl .t{font-weight:700}
.dl .s{font-size:13px;color:var(--text-muted)}
.upnext{display:block;margin-top:14px;text-decoration:none;color:inherit}
.upnext .k{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin:0 0 6px}
.upnext .vcard{border-color:color-mix(in srgb,var(--c) 40%,var(--line))}
.upnext.done{padding:14px 16px;border:1px dashed var(--line-strong);border-radius:14px}
.upnext .ut{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--accent)}
.pn{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.pnb{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 12px;border-radius:11px;border:1px solid var(--line);
  background:var(--surface-1);text-decoration:none;color:var(--text-secondary);font-size:14px;font-weight:600;max-width:100%}
.pnb:hover{border-color:var(--accent);color:var(--accent)}
.study{max-width:820px}
.jump{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0 0;padding-top:18px;border-top:1px solid var(--line)}
.jump a{font-size:14px;min-height:40px;display:inline-flex;align-items:center;padding:7px 14px;border-radius:10px;border:1px solid var(--line-strong);
  background:var(--surface-2);color:var(--text-secondary);text-decoration:none;font-weight:600}
.jump a:hover{border-color:var(--accent);color:var(--accent)}
.keypts{margin:0;padding:14px 16px 14px 34px;background:var(--surface-1);border:1px solid var(--line);border-radius:14px}
.keypts li{margin:4px 0}
.sect figure{margin:14px 0;max-width:760px}
.sect figure img{width:100%;height:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.sect figcaption{font-size:13px;color:var(--text-muted);margin-top:4px}
.formula{display:inline-block;margin:6px 0;padding:8px 14px;border-radius:10px;font-weight:650;
  background:color-mix(in srgb,var(--c,var(--accent)) 10%,var(--surface-1));border:1px solid color-mix(in srgb,var(--c,var(--accent)) 50%,var(--line))}
.ltable{border-collapse:collapse;margin:10px 0;font-size:14.5px;max-width:760px;width:100%}
.ltable th,.ltable td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.ltable th{background:var(--surface-2);font-weight:650}
.tablewrap{overflow-x:auto;max-width:100%}

/* ---------- simulation ---------- */
.simbox{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface-0)}
.simbox iframe{display:block;width:100%;height:640px;border:0;background:var(--surface-1)}
@media (max-width:760px){.simbox iframe{height:720px}}
.simnote{font-size:14px;color:var(--text-muted);margin:8px 0 0}

/* ---------- quiz ---------- */
.quiz{border:1px solid var(--line);border-radius:14px;padding:6px 18px 18px;background:var(--surface-1)}
.qitem{padding:14px 0;border-bottom:1px solid var(--line)}
.qitem:last-of-type{border-bottom:0}
.qtext{font-weight:650;margin:0 0 10px}
.qopts{display:grid;gap:8px}
.qopt{display:flex;gap:10px;align-items:center;text-align:left;width:100%;min-height:48px;padding:10px 12px;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--surface-0);color:var(--text-primary);font:inherit;cursor:pointer}
.qopt .k{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700;color:var(--text-secondary)}
.qopt:hover{border-color:var(--accent)}
.qopt[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--surface-1))}
.qopt[aria-pressed="true"] .k{background:var(--accent);border-color:var(--accent);color:#fff}
.qopt:disabled{cursor:default}
.qopt.right{border-color:var(--good);background:color-mix(in srgb,var(--good) 12%,var(--surface-1))}
.qopt.right .k{background:var(--good);border-color:var(--good);color:#fff}
.qopt.wrong{border-color:#c62828;background:color-mix(in srgb,#c62828 10%,var(--surface-1))}
.qopt.wrong .k{background:#c62828;border-color:#c62828;color:#fff}
.qexp{margin:10px 0 0;padding:10px 12px;border-radius:10px;background:var(--surface-2);font-size:14.5px}
.qexp b{margin-right:4px}
.qbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px}
.qbar .btn{min-height:46px}
.qmsg{font-size:14px;color:var(--text-secondary)}
.qscore{font-size:19px;font-weight:760}

/* ---------- phones ---------- */
@media (max-width:560px){
  .lhead h1{font-size:25px}
  .thead h1{font-size:23px}
  .classgrid,.subjgrid,.chapgrid,.vgrid{grid-template-columns:minmax(0,1fr)}
  .classcard{padding:16px;gap:14px}
  .classcard .num{width:52px;height:52px;font-size:26px;border-radius:14px}
  .trow .s{display:none}
  .trow .watch{padding:8px 10px}
  .site-head .brand-title{font-size:21px}
  .site-head .brand .pxmark{width:32px;height:32px}
  .navlinks a{padding:10px 6px;font-size:13.5px}
}
@media (max-width:380px){
  .trow .tthumb{display:none}
  .navlinks a[href$="#/jee"]{display:none}
}
@media (prefers-reduced-motion:reduce){
  .classcard,.subjcard,.chapcard,.vcard,.go{transition:none}
  .classcard:hover,.subjcard:hover,.chapcard:hover,.vcard:hover{transform:none}
  a:hover > .go{transform:none}
}
.mcards{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 12px;margin:10px 0 14px;-webkit-overflow-scrolling:touch}
.mcards img{flex:0 0 min(80%,360px);width:min(80%,360px);height:auto;aspect-ratio:4/5;border-radius:14px;scroll-snap-align:start;border:1px solid var(--line);background:#0A1730}