/* Apna IT School LMS — agency-grade design system (palette from Nov 6 brand logos)
   Type: Plus Jakarta Sans (display) + Inter (body) · Spacing scale --s1..--s6
   Palette: Purple #62319F · Orange #FB7601 · Navy #1B2F5C · Blue #1970CB
   App-type shell: mobile ≤768px bottom tab bar + sticky app header; desktop navy sidebar */
:root{
  --purple:#62319F; --purple-d:#4E2680; --purple-soft:#F1EAFB; --purple-line:#E3D6F5;
  --orange:#FB7601; --orange-d:#D96600; --orange-soft:#FFF1E3;
  --navy:#1B2F5C; --navy2:#24396B; --navy-deep:#12224A;
  --blue:#1970CB; --blue-d:#125A9E; --blue-soft:#E7F1FB;
  --bg:#F4F5FA; --card:#fff; --ink:#1B2F5C; --ink2:#33415E; --muted:#64748B;
  --line:#E5E8F0; --green:#15803D; --green-bg:#DCFCE7; --red:#B91C1C; --red-bg:#FEE2E2;
  --amber:#92400E; --amber-bg:#FEF3C7;
  --font-display:"Plus Jakarta Sans","Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:20px; --s6:24px;
  --fs-xs:12px; --fs-sm:13px; --fs-base:15px; --fs-lg:17px; --fs-xl:24px;
  --radius-sm:10px; --radius:16px; --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(27,47,92,.06);
  --shadow:0 1px 2px rgba(27,47,92,.06),0 8px 24px rgba(27,47,92,.06);
  --shadow-lg:0 2px 6px rgba(27,47,92,.08),0 16px 40px rgba(27,47,92,.12);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink2);font-size:var(--fs-base);line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:var(--purple-soft);color:var(--purple-d)}
a{color:var(--purple);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--purple);outline-offset:2px}
h1,h2,h3{font-family:var(--font-display);color:var(--navy);margin:0 0 var(--s2);line-height:1.25;letter-spacing:-.2px}
h1{font-size:var(--fs-xl);font-weight:800}
h2{font-size:var(--fs-lg);font-weight:800}
h3{font-size:15.5px;font-weight:700}
p{margin:0 0 10px}
.muted{color:var(--muted);font-size:var(--fs-sm)}
.small{font-size:var(--fs-xs)}
.hidden{display:none!important}
.eyebrow{margin:0 0 2px;font-size:11px;font-weight:800;letter-spacing:1.6px;text-transform:uppercase;color:var(--orange)}
.hint{margin-top:10px}
.form-actions{height:14px}
.filterbar{margin-bottom:var(--s3)}
.filter-select{max-width:240px}
.filterrow{margin-bottom:var(--s2)}

/* ---- app shell: navy sidebar + content ---- */
.app{display:flex;align-items:stretch;min-height:100vh}
.sidebar{width:250px;flex-shrink:0;background:linear-gradient(180deg,var(--navy) 0%,var(--navy-deep) 100%);color:#fff;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:20}
.side-brand{display:flex;align-items:center;gap:11px;padding:18px 18px var(--s4);border-bottom:1px solid rgba(255,255,255,.12)}
.side-brand img.logo{height:58px;width:auto;background:#fff;border-radius:var(--radius-sm);padding:4px 9px;flex-shrink:0}
.side-brand .brand{font-family:var(--font-display);font-weight:800;font-size:16px;line-height:1.2;letter-spacing:.2px}
.side-brand .brand span{color:var(--orange)}
.side-brand .brand-sub{font-size:11.5px;color:rgba(255,255,255,.65);margin-top:1px}
.side-label{padding:18px 20px var(--s2);font-size:11px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:rgba(255,255,255,.5)}
.sidenav{display:flex;flex-direction:column;gap:4px;padding:0 12px;flex:1;overflow-y:auto}
.tab,.navlink{display:flex;align-items:center;width:100%;text-align:left;border:0;cursor:pointer;background:transparent;color:rgba(255,255,255,.78);border-radius:var(--radius-sm);padding:11px 13px;font-size:14px;font-weight:600;font-family:inherit;transition:background .15s,color .15s}
.tab svg,.navlink svg{width:17px;height:17px;flex-shrink:0;margin-right:11px;opacity:.85}
.tab:hover,.navlink:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none}
.tab.on{background:rgba(255,255,255,.14);color:#fff;box-shadow:inset 3px 0 0 var(--orange)}
.tab.on svg,.navlink svg{opacity:1}
.side-foot{padding:var(--s4);border-top:1px solid rgba(255,255,255,.12)}
.side-foot .who{font-size:13.5px;font-weight:700;line-height:1.35;margin-bottom:10px}
.side-foot .who .pill{margin-top:6px}
.side-foot .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.side-foot .btn.ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55)}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:22px 20px 32px}
.pagehead{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px}
.pagehead p{margin:2px 0 0}
.appfoot{max-width:1080px;margin:0 auto;padding:0 20px 28px;color:var(--muted);font-size:var(--fs-xs);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.appfoot b{color:var(--navy)}
[id^="sec-"]{scroll-margin-top:var(--s4)}

/* ---- buttons ---- */
.btn{display:inline-block;border:0;cursor:pointer;border-radius:var(--radius-sm);padding:10px 18px;font-size:14px;font-weight:700;background:var(--purple);color:#fff;box-shadow:0 1px 2px rgba(98,49,159,.35);transition:background .15s,box-shadow .15s,transform .12s}
.btn:hover{background:var(--purple-d);box-shadow:0 4px 14px rgba(98,49,159,.32);transform:translateY(-1px)}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn.orange{background:var(--orange);box-shadow:0 1px 2px rgba(251,118,1,.4)}
.btn.orange:hover{background:var(--orange-d);box-shadow:0 4px 14px rgba(251,118,1,.35)}
.btn.navy{background:var(--navy)}
.btn.navy:hover{background:var(--navy2)}
.btn.blue{background:var(--blue)}
.btn.blue:hover{background:var(--blue-d)}
.btn.ghost{background:#fff;color:var(--navy);border:1.5px solid #D9DEE8;box-shadow:none}
.btn.ghost:hover{background:var(--purple-soft);border-color:var(--purple-line);box-shadow:none}
.btn.danger{background:#DC2626}
.btn.danger:hover{background:#B91C1C}
.btn.small{padding:7px 12px;font-size:13px;border-radius:8px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.block{width:100%}

/* ---- cards / stats ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:var(--s4);box-shadow:var(--shadow)}
.card>h2{padding-bottom:11px;border-bottom:1px solid var(--line);margin-bottom:15px}
.card>h2::before{content:"";display:inline-block;width:4px;height:16px;border-radius:2px;background:var(--orange);margin-right:9px;vertical-align:-2px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:760px){.g2,.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.g2,.g3,.g4{grid-template-columns:1fr}}
.stat{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--line);border-top:3px solid var(--purple);border-radius:var(--radius);padding:var(--s4);box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.stat::after{content:"";position:absolute;top:-20px;right:-20px;width:68px;height:68px;border-radius:50%;background:var(--purple-soft)}
.stat:nth-child(2){border-top-color:var(--blue)}
.stat:nth-child(2)::after{background:var(--blue-soft)}
.stat:nth-child(3){border-top-color:var(--orange)}
.stat:nth-child(3)::after{background:var(--orange-soft)}
.stat:nth-child(4){border-top-color:var(--navy)}
.stat:nth-child(4)::after{background:#E8EDF8}
.stat>*{position:relative;z-index:1}
.stat .n{font-family:var(--font-display);font-size:28px;font-weight:800;color:var(--navy);line-height:1.1;letter-spacing:-.5px}
.stat .l{font-size:var(--fs-sm);color:var(--muted);margin-top:3px;font-weight:600}
.stat .sub{font-size:12.5px;margin-top:8px;color:var(--muted)}
#stats{margin-bottom:var(--s4)}

/* ---- pills / badges ---- */
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:var(--fs-xs);font-weight:700;white-space:nowrap}
.pill.green{background:var(--green-bg);color:var(--green)}
.pill.red{background:var(--red-bg);color:var(--red)}
.pill.amber{background:var(--amber-bg);color:var(--amber)}
.pill.navy{background:#DBE4FF;color:var(--navy)}
.pill.purple{background:var(--purple-soft);color:var(--purple-d)}
.pill.orange{background:var(--orange-soft);color:#C25E00}
.pill.blue{background:var(--blue-soft);color:var(--blue-d)}
.pill.grey{background:#EEF0F4;color:var(--muted)}

/* ---- tables ---- */
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.tblwrap table{border:0}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--navy);font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.5px;background:#F6F3FC;font-weight:800}
thead th{position:sticky;top:0;z-index:1}
tbody tr:hover{background:#FBF9FE}
tr:last-child td{border-bottom:0}
td.muted{padding:22px 12px;text-align:center}
th.num,td.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---- empty states (JS-rendered plain muted text ko styled box) ---- */
#classList>p.muted,#nextClass .card>p.muted,#courseCards>p.muted{margin:0;padding:22px 16px;text-align:center;border:1.5px dashed var(--purple-line);border-radius:12px;background:#FCFAFE;font-size:14px}

/* ---- forms ---- */
input,select,textarea{width:100%;padding:11px 12px;border:1.5px solid #D9DEE8;border-radius:var(--radius-sm);font-size:14px;background:#fff;font-family:inherit;color:var(--ink2);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--purple);box-shadow:0 0 0 3px rgba(98,49,159,.14)}
input::placeholder{color:#9AA3B2}
label{display:block;font-size:var(--fs-sm);font-weight:700;color:var(--navy);margin:12px 0 5px}
label:first-child{margin-top:0}
.formrow{display:grid;gap:0 14px}
.f2{grid-template-columns:1fr 1fr}
.f3{grid-template-columns:1fr 1fr 1fr}
@media(max-width:600px){.f2,.f3{grid-template-columns:1fr}}

/* ---- classes / join ---- */
.joinbox{border:2px solid var(--purple);background:var(--purple-soft);border-radius:var(--radius);padding:18px;margin-bottom:var(--s4);box-shadow:var(--shadow)}
.joinbox.live{border-color:var(--orange);background:var(--orange-soft);animation:livePulse 2.4s ease-in-out infinite}
@keyframes livePulse{0%,100%{box-shadow:0 0 0 0 rgba(251,118,1,.28)}50%{box-shadow:0 0 0 7px rgba(251,118,1,0)}}
.classitem{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 16px;margin-bottom:12px;box-shadow:var(--shadow-sm)}
.classitem .when{min-width:88px;text-align:center;background:linear-gradient(160deg,var(--navy),var(--purple));color:#fff;border-radius:12px;padding:9px 6px;flex-shrink:0}
.classitem .when .d{font-family:var(--font-display);font-size:21px;font-weight:800;line-height:1}
.classitem .when .m{font-size:11.5px;opacity:.85;margin-top:2px}
.class-main{flex:1;min-width:0}
.class-title{line-height:1.45}
.class-title b{font-size:15px;color:var(--navy)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 2px}
.chip{display:inline-flex;align-items:center;background:#F4F5FA;border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;color:var(--ink2);white-space:nowrap}
.class-actions{display:flex;gap:8px;align-items:flex-start;flex-shrink:0}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 20px;border-radius:999px;font-size:14px;font-weight:600;box-shadow:0 8px 28px rgba(0,0,0,.28);z-index:99;max-width:92vw;text-align:center}
.toast.err{background:var(--red)}

/* ---- login ---- */
.loginwrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;background:linear-gradient(155deg,var(--navy) 0%,#2B3E7A 45%,var(--purple) 100%)}
.logincard{background:#fff;border-top:4px solid var(--orange);border-radius:var(--radius-lg);padding:28px 26px;width:100%;max-width:400px;box-shadow:0 24px 60px rgba(0,0,0,.32)}
.logincard img{height:76px;width:auto;display:block;margin:0 auto 8px}
.logincard h1{text-align:center;font-size:22px}
.logincard .sub{text-align:center;color:var(--muted);font-size:13.5px;margin-bottom:6px}
.demo{margin-top:var(--s4);background:var(--purple-soft);border:1px dashed var(--purple-line);border-radius:12px;padding:11px 13px;font-size:12.5px;color:var(--muted)}
.demo b{color:var(--navy)}
.login-foot{margin-top:18px;text-align:center;color:rgba(255,255,255,.75);font-size:var(--fs-xs)}
.login-foot a{color:#fff;font-weight:600}
.err-text{color:var(--red);margin:10px 0 0}
.notice-amber{background:var(--amber-bg);border-radius:8px;padding:9px 11px;color:var(--amber)}
.center-note{text-align:center;margin:14px 0 0}
.brand-accent{color:var(--purple)}

/* ---- inline modal (native prompt/confirm ki jagah) ---- */
.modal-overlay{position:fixed;inset:0;z-index:100;background:rgba(18,34,74,.55);display:flex;align-items:center;justify-content:center;padding:20px;animation:modalIn .18s ease}
@keyframes modalIn{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:20px;width:100%;max-width:440px;max-height:88vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:modalUp .2s ease}
@keyframes modalUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:18px 20px 0}
.modal-head h3{margin:0;font-size:17px}
.modal-x{width:40px;height:40px;border-radius:12px;border:0;background:#F4F5FA;color:var(--ink2);font-size:22px;line-height:1;cursor:pointer;flex-shrink:0}
.modal-body{padding:12px 20px 4px}
.modal-body p{margin:0 0 8px}
.modal-actions{display:flex;gap:10px;padding:14px 20px 20px}
.modal-actions .btn{flex:1;min-height:46px}

/* ---- app shell: mobile app bar + bottom tab bar (≤768px) ---- */
.appbar,.tabbar{display:none}
@media(max-width:768px){
  html,body{overflow-x:hidden}
  .app{display:block}
  .sidebar{display:none}
  .appbar{display:flex;position:sticky;top:0;z-index:40;align-items:center;gap:10px;padding:calc(10px + env(safe-area-inset-top,0px)) 14px 10px;background:linear-gradient(135deg,var(--navy) 0%,#2B3E7A 55%,var(--purple) 100%);color:#fff;box-shadow:0 4px 18px rgba(18,34,74,.28)}
  .appbar img.logo{height:48px;width:auto;background:#fff;border-radius:10px;padding:4px 8px;flex-shrink:0}
  .appbar .appbar-title{line-height:1.25;min-width:0;flex:1}
  .appbar .appbar-title b{display:block;font-family:var(--font-display);font-size:15.5px;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .appbar .appbar-title b span{color:#FFB25E}
  .appbar .appbar-title small{font-size:11.5px;color:rgba(255,255,255,.78)}
  .appbar .appbar-user{display:flex;align-items:center;gap:8px;min-width:0}
  .appbar .appbar-user .who{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:104px}
  .iconbtn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);color:#fff;cursor:pointer;flex-shrink:0}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom,0px));box-shadow:0 -6px 24px rgba(27,47,92,.10)}
  .tabbar .btab{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:56px;border:0;background:transparent;color:var(--muted);font-family:inherit;font-size:11px;font-weight:700;cursor:pointer;border-radius:12px;padding:4px 2px;text-decoration:none}
  .tabbar .btab svg{width:23px;height:23px}
  .tabbar .btab.on{color:var(--purple)}
  .tabbar .btab.on::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--orange)}
  .wrap{padding:16px 14px 118px}
  .appfoot{padding:0 14px 118px}
  .pagehead{flex-direction:column;gap:6px}
  h1{font-size:21px}
  .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .btn.small{min-height:44px;padding:10px 14px;font-size:13.5px}
  input,select,textarea{min-height:48px;font-size:16px}
  .tblwrap{overflow:visible;border:0;background:transparent}
  .tblwrap table,.tblwrap tbody,.tblwrap tr,.tblwrap td{display:block;width:100%}
  .tblwrap thead{display:none}
  .tblwrap tbody tr{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;padding:8px 14px;box-shadow:var(--shadow-sm)}
  .tblwrap tbody tr:hover{background:#fff}
  .tblwrap td{border-bottom:1px solid #F0F2F7;padding:9px 0;display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:right}
  .tblwrap td:last-child{border-bottom:0}
  .tblwrap td::before{content:attr(data-label);font-size:11px;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;text-align:left;flex-shrink:0}
  .tblwrap td.actions{justify-content:flex-end;flex-wrap:wrap}
  .tblwrap td.actions::before{display:none}
  .tblwrap td.actions .btn{flex:1 1 auto}
  .g2,.g3{grid-template-columns:1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .f2,.f3{grid-template-columns:1fr}
  .classitem{flex-direction:column;align-items:stretch;gap:10px}
  .classitem .when{display:inline-flex;align-items:baseline;gap:5px;min-width:0;padding:6px 12px;border-radius:999px;align-self:flex-start}
  .classitem .when .d{font-size:15px}
  .classitem .when .m{font-size:12px;margin-top:0}
  .class-actions{flex-wrap:wrap}
  .class-actions .btn{flex:1;min-height:48px}
  .joinbox .btn.block{min-height:52px;font-size:16px}
  .toast{bottom:calc(88px + env(safe-area-inset-bottom,0px))}
  .modal-overlay{align-items:flex-end;padding:0}
  .modal{max-width:none;border-radius:22px 22px 0 0;padding-bottom:calc(10px + env(safe-area-inset-bottom,0px));animation:sheetUp .22s ease}
  .modal-actions{flex-direction:column}
  .modal-actions .btn{width:100%}
  [id^="sec-"]{scroll-margin-top:76px}
}
@keyframes sheetUp{from{transform:translateY(40px);opacity:.6}to{transform:none;opacity:1}}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}