/* MLS Course Registration — styles
   Palette: lab bench greys + teal; the three "tube cap" colours mark the registration type. */
:root{
  --bench:#EEF3F2; --panel:#FFFFFF; --ink:#142A2F; --muted:#5B6F74; --rule:#D2DCDA; --rule-strong:#AFC0BD;
  --teal:#1D6770; --teal-ink:#FFFFFF; --teal-soft:#E0EDEC;
  --cap-reg:#6C5BA8; --cap-ret:#BE3A2E; --cap-exam:#C28413;
  --ok:#2B7A4B; --ok-soft:#E3F1E8; --no:#B0271F; --no-soft:#F8E4E2; --wait:#6E7D81; --wait-soft:#ECEFEF;
  --warn:#8A5A00; --warn-soft:#FBF0D9;
  --radius:6px;
  --font:'Vazirmatn','IBM Plex Sans',system-ui,sans-serif;
}
html[lang="en"]{ --font:'IBM Plex Sans','Vazirmatn',system-ui,sans-serif; }
@media (prefers-color-scheme: dark){
  :root{
    --bench:#0F1B1E; --panel:#162629; --ink:#E4EEEC; --muted:#93A7AB; --rule:#29403F; --rule-strong:#3D5A59;
    --teal:#4FA3AB; --teal-ink:#0C1A1C; --teal-soft:#1B3437;
    --ok:#6CC08F; --ok-soft:#173226; --no:#EF7F75; --no-soft:#3A1D1B; --wait:#9AA9AC; --wait-soft:#223235;
    --warn:#E8B75A; --warn-soft:#3A2E14;
  }
}
*{box-sizing:border-box}
html,body{height:100%}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--bench);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.55;font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.hidden{display:none!important}
.ltr{direction:ltr;unicode-bidi:isolate}

/* ── Top bar ── */
.top{background:var(--panel);border-bottom:1px solid var(--rule);position:sticky;top:env(safe-area-inset-top,0px);z-index:20}
.top-in{max-width:1180px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:14px}
.brand{display:flex;flex-direction:column;min-width:0;flex:1}
.brand strong{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand span{font-size:12.5px;color:var(--muted)}
.brand .short{display:none}
.tools{display:flex;gap:8px;align-items:center}
.uname{max-width:140px;overflow:hidden;text-overflow:ellipsis}
.nav{max-width:1180px;margin:0 auto;padding:0 12px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav button{border:0;background:none;padding:10px 12px 11px;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;font-weight:500}
.nav button[aria-current="true"]{color:var(--ink);border-bottom-color:var(--teal)}
.nav .count{font-size:12px;background:var(--warn-soft);color:var(--warn);border-radius:10px;padding:0 7px;margin-inline-start:6px}

main{max-width:1180px;margin:0 auto;padding:22px 18px 60px}
h1{font-size:22px;margin:0 0 4px;font-weight:700}
h2{font-size:17px;margin:28px 0 10px;font-weight:700}
.sub{color:var(--muted);margin:0 0 18px;font-size:14px}

/* ── Buttons & inputs ── */
.btn{border:1px solid var(--rule-strong);background:var(--panel);border-radius:var(--radius);padding:7px 13px;cursor:pointer;font-weight:500;white-space:nowrap}
.btn:hover{border-color:var(--teal)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:var(--teal-ink)}
.btn.ok{color:var(--ok);border-color:currentColor}
.btn.no{color:var(--no);border-color:currentColor}
.btn.ghost{border-color:transparent;background:none}
.btn.sm{padding:3px 9px;font-size:13px}
.btn:disabled{opacity:.5;cursor:default}
input[type=text],input[type=password],input[type=number],input[type=search],select,textarea{background:var(--panel);border:1px solid var(--rule-strong);border-radius:var(--radius);padding:7px 10px;min-width:0}
textarea{width:100%;min-height:70px}
label.fld{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
label.fld > *{color:var(--ink);font-size:15px}
.bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:14px}
.bar .grow{flex:1 1 200px}
.check{display:inline-flex;gap:6px;align-items:center;font-size:14px;cursor:pointer}

/* ── Specimen label: the subject code ── */
.spec{display:inline-flex;align-items:stretch;border:1px solid var(--rule-strong);border-radius:3px;background:var(--panel);overflow:hidden;direction:ltr;vertical-align:middle;line-height:1.35}
.spec::before{content:"";width:5px;background:var(--teal)}
.spec b{padding:1px 7px;font-weight:600;font-size:12.5px;font-family:'IBM Plex Sans',sans-serif;letter-spacing:.02em}
.spec i{font-style:normal;padding:1px 6px;font-size:11.5px;color:var(--muted);border-inline-start:1px dashed var(--rule-strong)}

/* ── Tube-cap chips for registration type ── */
.cap{display:inline-flex;align-items:center;gap:6px;font-size:13px;white-space:nowrap}
.cap::before{content:"";width:9px;height:12px;border-radius:3px 3px 1px 1px;background:var(--c)}
.cap-REGULAR{--c:var(--cap-reg)} .cap-RETAKE{--c:var(--cap-ret)} .cap-EXAM_RETAKE{--c:var(--cap-exam)}
.st{display:inline-block;font-size:12.5px;padding:1px 8px;border-radius:10px;white-space:nowrap}
.st-PENDING{background:var(--wait-soft);color:var(--wait)}
.st-APPROVED{background:var(--ok-soft);color:var(--ok)}
.st-REJECTED{background:var(--no-soft);color:var(--no)}
.flag{display:inline-block;font-size:12.5px;padding:1px 8px;border-radius:4px;background:var(--warn-soft);color:var(--warn)}
.tag{display:inline-block;font-size:12px;padding:0 7px;border:1px solid var(--rule-strong);border-radius:4px;color:var(--muted)}

/* ── Facts strip ── */
.facts{display:flex;flex-wrap:wrap;gap:0;background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius);margin-bottom:16px}
.facts div{padding:12px 18px;border-inline-end:1px solid var(--rule);flex:1 1 130px}
.facts div:last-child{border-inline-end:0}
.facts dt{font-size:13px;color:var(--muted)}
.facts dd{margin:0;font-size:22px;font-weight:600}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin:4px 0 8px}

/* ── Tables ── */
.tbl-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%}
th,td{padding:8px 12px;text-align:start;border-bottom:1px solid var(--rule);vertical-align:middle}
th{font-size:12.5px;font-weight:600;color:var(--muted);background:var(--bench);white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr.click{cursor:pointer}
tbody tr.click:hover{background:var(--teal-soft)}
td.num,th.num{text-align:end}
.muted{color:var(--muted)}
.sbar{display:flex;height:10px;border-radius:2px;overflow:hidden;background:var(--wait-soft);min-width:120px}
.sbar span{display:block;height:100%}

/* ── Review cases ── */
.case{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius);margin-bottom:12px}
.case.flagged{border-inline-start:4px solid var(--warn)}
.case > header{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--rule);flex-wrap:wrap}
.case h3{margin:0;font-size:16px}
.case h3 a{text-decoration:none}
.case h3 a:hover{text-decoration:underline}
.case .meta{margin:2px 0 0;font-size:13.5px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.ects{font-weight:600;white-space:nowrap}
.ects.over{color:var(--no)}
.case .flags{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.case table td{border-bottom:1px dashed var(--rule)}
.case .extra{padding:10px 16px;font-size:14px;border-top:1px solid var(--rule);display:grid;gap:4px}
.case .extra b{color:var(--muted);font-weight:500}
.case > footer{display:flex;gap:8px;padding:10px 16px;border-top:1px solid var(--rule);justify-content:flex-end;flex-wrap:wrap}
.acts{display:flex;gap:4px;justify-content:flex-end}

/* ── Subject cards (teacher) ── */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.scard{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius);padding:14px 16px;text-align:start;cursor:pointer;display:flex;flex-direction:column;gap:8px}
.scard:hover{border-color:var(--teal)}
.scard h3{margin:0;font-size:16px}
.scard p{margin:0;color:var(--muted);font-size:14px}

/* ── Login ── */
.login{min-height:100%;display:grid;place-items:center;padding:24px}
.login-card{width:min(420px,100%);background:var(--panel);border:1px solid var(--rule);border-radius:10px;padding:28px}
.login-card .spec{margin-bottom:18px}
.login-card .spec b{font-size:14px;padding:3px 10px}
.login-card h1{font-size:21px}
.login-card form{display:grid;gap:14px;margin-top:20px}
.err{color:var(--no);font-size:14px;min-height:1.2em;margin:0}

/* ── Dialog, toast, loader ── */
dialog{border:1px solid var(--rule);border-radius:10px;padding:0;width:min(720px,94vw);max-height:88vh;background:var(--panel);color:var(--ink)}
dialog::backdrop{background:rgba(10,25,28,.45)}
.dlg-h{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--rule);position:sticky;top:0;background:var(--panel);z-index:1}
.dlg-h h2{margin:0;font-size:17px}
.dlg-b{padding:16px 18px;display:grid;gap:14px}
.dlg-f{display:flex;gap:8px;justify-content:flex-end;padding:12px 18px;border-top:1px solid var(--rule);position:sticky;bottom:0;background:var(--panel)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
dl.kv{display:grid;grid-template-columns:max-content 1fr;gap:4px 16px;margin:0;font-size:14px}
dl.kv dt{color:var(--muted)}
dl.kv dd{margin:0}
.asg-stage{border:1px solid var(--rule);border-radius:var(--radius)}
.asg-stage h3{margin:0;padding:8px 12px;font-size:14px;background:var(--bench);border-bottom:1px solid var(--rule)}
.asg-row{display:flex;align-items:center;gap:10px;padding:6px 12px;border-bottom:1px dashed var(--rule)}
.asg-row:last-child{border-bottom:0}
.asg-row .grow{flex:1}
#toast{position:fixed;inset-inline:0;bottom:calc(20px + env(safe-area-inset-bottom,0px));display:flex;justify-content:center;pointer-events:none;z-index:50}
#toast div{background:var(--ink);color:var(--bench);padding:9px 16px;border-radius:8px;font-size:14px;max-width:90vw}
#toast div.bad{background:var(--no);color:#fff}
.loading{padding:40px 0;text-align:center;color:var(--muted)}
.empty{padding:30px 16px;text-align:center;color:var(--muted);background:var(--panel);border:1px dashed var(--rule-strong);border-radius:var(--radius)}
.print-head{display:none}
/* ── Data issues ── */
.issue-nav{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 18px}
.issue-nav a{display:inline-flex;gap:6px;align-items:center;text-decoration:none;color:var(--ink);background:var(--panel);border:1px solid var(--rule);border-radius:16px;padding:3px 12px;font-size:13.5px}
.issue-nav a b{color:var(--warn)}
.issue-nav a.zero{color:var(--muted)}
.issue-nav a.zero b{color:var(--muted)}
.issue-sec{scroll-margin-top:120px;margin-bottom:22px}
.issue-sec h2{margin:0 0 2px;display:flex;gap:8px;align-items:baseline}
.issue-sec h2 .n{font-size:13px;font-weight:500;color:var(--warn);background:var(--warn-soft);border-radius:10px;padding:0 8px}
.issue-sec > p{margin:0 0 8px;color:var(--muted);font-size:14px}
tr.done td{opacity:.55}
.issue-sec td:not(.diff){white-space:nowrap}
.diff{font-size:13px;color:var(--muted)}
.diff b{color:var(--ink);font-weight:500}
.cta-issues{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:var(--warn-soft);border:1px solid color-mix(in srgb,var(--warn) 30%,transparent);border-radius:var(--radius);padding:10px 14px;margin-bottom:16px}
.cta-issues p{margin:0;color:var(--warn);font-size:14px}

.tbl-wrap.flat{border:0;border-radius:0}
.issue-list{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:14px}
.issue-list li.muted .flag{opacity:.6}
.top-in > img{flex:none;border-radius:8px}
.case h3 a,.issue-sec a{color:inherit}

/* ── App banners (install / update / offline) ── */
#banners:empty{display:none}
.banner{max-width:1180px;margin:10px auto 0;padding:8px 14px;border-radius:var(--radius);display:flex;gap:10px;align-items:center;justify-content:space-between;font-size:14px;background:var(--teal-soft)}
.banner.off{background:var(--no-soft);color:var(--no)}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}


@media (max-width:640px){
  main{padding:16px 12px 60px}
  .two{grid-template-columns:1fr}
  th,td{padding:7px 9px}
  .facts div{padding:10px 12px}
  .facts dd{font-size:19px}
  .hide-sm{display:none}
  .top-in{padding:10px 12px;gap:8px}
  .brand .long,.brand span{display:none}
  .brand .short{display:block;font-size:14.5px}
  .uname{max-width:84px}
  .top-in > img{width:30px;height:30px}
  /* review cards: one subject per block instead of a squeezed table row */
  .case table,.case tbody{display:block}
  .case tr{display:grid;grid-template-columns:auto 1fr;gap:6px 10px;align-items:center;padding:9px 12px;border-bottom:1px dashed var(--rule)}
  .case tr:last-child{border-bottom:0}
  .case td{padding:0;border:0!important}
  .case td:last-child{grid-column:1/-1}
  .case .acts{justify-content:flex-start}
  .case > header,.case .extra,.case > footer{padding-inline:12px}
  /* lists scroll sideways instead of wrapping names over three lines */
  main .tbl-wrap:not(.flat) td:not(.diff){white-space:nowrap}
  .scard h3{font-size:15px}
  .bar select,.bar input{flex:1 1 140px}
}
@media (prefers-reduced-motion:no-preference){
  .case,.scard{transition:border-color .15s}
}
@media print{
  body{background:#fff;color:#000;font-size:12px}
  .top,.bar,.no-print,#toast,.banner,.issue-nav,.cta-issues{display:none!important}
  main{padding:0;max-width:none}
  .print-head{display:block;margin-bottom:10px}
  .tbl-wrap{border:0}
  th{background:#eee}
}

/* ═══ v3: sign-in, welcome card, subject cards, mark sheet ═══════════════════ */
.pwrow{display:flex;gap:6px;align-items:center}
.pwrow input{flex:1}
input[type=email],input[type=url]{background:var(--panel);border:1px solid var(--rule-strong);border-radius:var(--radius);padding:7px 10px;min-width:0}
.hint{font-size:13.5px;color:var(--muted);margin:-4px 0 12px}

.hello{display:flex;gap:16px;align-items:flex-start;background:linear-gradient(135deg,var(--teal) 0%,#0F4A51 100%);color:#fff;border-radius:14px;padding:18px 20px;margin-bottom:18px}
.hello .avatar{flex:none;width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.16);display:grid;place-items:center;font-size:24px;font-weight:700}
.hello-text{min-width:0}
.hello-text p{margin:0;opacity:.85;font-size:14px}
.hello-text h1{margin:2px 0 8px;font-size:21px;color:#fff}
.hello .muted{color:rgba(255,255,255,.75)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.chip{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:3px 11px;font-size:13px;color:#fff}
.chip b{font-weight:600;font-size:12px;letter-spacing:.02em;opacity:.8}
.hello.compact{padding:12px 16px;align-items:center;margin-bottom:14px}
.hello.compact .avatar{width:40px;height:40px;font-size:18px}
.hello.compact h1{margin:0;font-size:17px}

.scard-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.prog{height:6px;background:var(--wait-soft);border-radius:3px;overflow:hidden;direction:ltr}
.prog span{display:block;height:100%;background:var(--teal);border-radius:3px}

.sheet-head{margin-bottom:12px}
.sheet-head .btn{margin-bottom:8px;padding-inline:0}
.sheet-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.sheet-title h1{margin:0;font-size:22px}
.sheet-head .sub{margin:4px 0 0}
.facts small{font-size:13px;font-weight:400;color:var(--muted)}
.facts .pass dd{color:var(--ok)}
.facts .fail dd{color:var(--no)}
.sheet-bar select{flex:0 1 auto}
.sheet-actions{align-items:center}
.save-state{font-size:13.5px;color:var(--muted);min-height:1.2em}
.save-state.saved{color:var(--ok)}
.save-state.error,.save-state.offline{color:var(--warn)}

/* the list: one card per student on phones, one aligned row on wider screens */
.mhead{display:none}
ol.marks{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.mrow{display:grid;grid-template-columns:34px 1fr 1fr 1fr;grid-template-areas:"no who who res" "no a b tot";gap:8px 10px;align-items:center;
  background:var(--panel);border:1px solid var(--rule);border-inline-start:4px solid var(--rule);border-radius:10px;padding:10px 12px}
.mrow.pass{border-inline-start-color:var(--ok)}
.mrow.fail{border-inline-start-color:var(--no)}
.mno{grid-area:no;align-self:start;width:30px;height:30px;border-radius:50%;background:var(--teal-soft);color:var(--teal);display:grid;place-items:center;font-weight:700;font-size:14px}
.mwho{grid-area:who;min-width:0}
.mwho b{display:block;font-size:15.5px;line-height:1.4}
.mwho small{display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:var(--muted);font-size:12.5px}
.mres{grid-area:res;justify-self:end}
.mcell{display:flex;flex-direction:column;gap:2px;font-size:11.5px;color:var(--muted)}
.mcell:nth-of-type(1){grid-area:a}
.mcell:nth-of-type(2){grid-area:b}
.mcell i,.mtot i,.mhead i{font-style:normal;opacity:.75}
input.sc{width:100%;font-size:18px;font-weight:600;text-align:center;padding:8px 4px;border:1.5px solid var(--rule-strong);border-radius:8px;background:var(--bench);
  color:var(--ink);font-variant-numeric:tabular-nums;direction:ltr;-moz-appearance:textfield}
input.sc:focus{outline:none;border-color:var(--teal);background:var(--panel);box-shadow:0 0 0 3px var(--teal-soft)}
input.sc.bad{border-color:var(--no);background:var(--no-soft)}
ol.locked input.sc{background:transparent;border-color:transparent;cursor:default}
.mtot{grid-area:tot;display:flex;flex-direction:column;gap:2px;font-size:11.5px;color:var(--muted);text-align:center}
.mtot b{font-size:20px;color:var(--ink);padding:6px 0;background:var(--wait-soft);border-radius:8px}
.mrow.pass .mtot b{background:var(--ok-soft);color:var(--ok)}
.mrow.fail .mtot b{background:var(--no-soft);color:var(--no)}
.res{display:inline-block;font-size:12.5px;font-weight:600;padding:2px 10px;border-radius:12px;white-space:nowrap}
.res.pass{background:var(--ok-soft);color:var(--ok)}
.res.fail{background:var(--no-soft);color:var(--no)}
.res.none{background:var(--wait-soft);color:var(--wait);font-weight:500}

@media (min-width:760px){
  .mhead{display:grid;grid-template-columns:44px minmax(220px,1fr) 110px 110px 100px 110px;gap:12px;padding:0 14px 6px;font-size:12.5px;font-weight:600;color:var(--muted);
    position:sticky;top:var(--top-h,100px);background:var(--bench);z-index:5;padding-top:8px}
  .mhead span:nth-child(n+3){text-align:center}
  ol.marks{gap:0;background:var(--panel);border:1px solid var(--rule);border-radius:10px;overflow:hidden}
  .mrow{grid-template-columns:44px minmax(220px,1fr) 110px 110px 100px 110px;grid-template-areas:"no who a b tot res";border:0;border-bottom:1px solid var(--rule);
    border-inline-start:4px solid transparent;border-radius:0;padding:8px 10px}
  .mrow:last-child{border-bottom:0}
  .mrow:nth-child(even){background:color-mix(in srgb,var(--bench) 55%,var(--panel))}
  .mno{align-self:center;justify-self:center}
  .mcell>span,.mtot>span{display:none}
  .mres{justify-self:center}
  .mtot b{padding:5px 0}
}

.invite-box{background:var(--teal-soft);border-radius:var(--radius);padding:10px 14px}
.invite-box p{margin:0 0 8px;font-size:14px}
.code-big{font-size:24px;letter-spacing:3px;font-family:ui-monospace,Consolas,monospace}
.filecard{margin:0;background:var(--bench);border-radius:var(--radius);padding:12px 14px;word-break:break-all}

@media (max-width:640px){
  .hello{padding:14px;gap:12px;border-radius:12px}
  .hello .avatar{width:44px;height:44px;font-size:20px}
  .hello-text h1{font-size:18px}
  .sheet-title h1{font-size:19px}
  .sheet-actions .btn{flex:1 1 auto}
  .facts div{flex:1 1 30%}
}
@media print{
  .hello,.sheet-actions,.hint,.sheet-bar{display:none!important}
  .mrow{break-inside:avoid}
}