:root{--brand:#0f5c4d;--brand-2:#e6f2ef;--ink:#1d2523;--muted:#66736f;--line:#dfe6e3;--bg:#f5f7f6;--ok:#1d7a46;--err:#b3261e;--warn:#9a6b00;--radius:10px}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand)}
h1,h2,h3{line-height:1.25;margin:0 0 .6em}
h2{font-size:1.15rem}h3{font-size:1rem}
.muted{color:var(--muted)}.small{font-size:.85rem}.right{text-align:right}.nowrap{white-space:nowrap}
.shell{display:flex;min-height:100vh}
.side{width:240px;background:#0d3d34;color:#cfe3dd;flex-shrink:0;position:sticky;top:0;height:100vh;overflow-y:auto}
.brand{display:flex;gap:10px;align-items:center;padding:18px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand img{width:38px;height:38px;object-fit:contain;background:#fff;border-radius:6px}
.brand strong{display:block;color:#fff;font-size:.95rem}.brand small{color:#9cc3b8}
.side nav{padding:8px 0 24px}
.nav-h{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:#7fa89d;padding:14px 18px 4px}
.side nav a{display:block;padding:7px 18px;color:#d7e9e4;text-decoration:none;font-size:.92rem;border-left:3px solid transparent}
.side nav a:hover{background:rgba(255,255,255,.05)}
.side nav a.on{background:rgba(255,255,255,.09);border-left-color:#7fd1b9;color:#fff}
.side nav a.logout{margin-top:14px;color:#f3b8b3}
main{flex:1;min-width:0;padding:0 24px 40px}
.top{display:flex;align-items:center;gap:12px;padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:18px}
.top h1{font-size:1.35rem;margin:0;flex:1}
.who{color:var(--muted);font-size:.9rem}
.menu{display:none;border:0;background:none;font-size:1.4rem;cursor:pointer}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:18px}
.grid-2{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat span{display:block;color:var(--muted);font-size:.82rem}
.stat b{display:block;font-size:1.45rem;margin-top:4px}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#f0f4f2;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:#4b5a55}
tr:hover td{background:#fafcfb}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.table-wrap table{border:0}
.form label{display:block;margin-bottom:12px;font-size:.9rem;font-weight:500}
.form input,.form select,.form textarea,.inline input,.inline select{display:block;width:100%;margin-top:4px;padding:8px 10px;border:1px solid #c9d4d0;border-radius:7px;font:inherit;background:#fff}
.form textarea{min-height:90px}
.form-row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.inline{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:14px}
.inline label{font-size:.85rem}
.inline input,.inline select{width:auto;min-width:140px}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:7px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{filter:brightness(1.1)}
.btn.sec{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.danger{background:var(--err)}
.btn.sm{padding:5px 10px;font-size:.85rem}
.btn.block{width:100%}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:14px}
.flash.ok{background:#e5f4ec;color:var(--ok)}.flash.err{background:#fbe9e7;color:var(--err)}.flash.warn{background:#fff5dc;color:var(--warn)}
.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.78rem;background:var(--brand-2);color:var(--brand);font-weight:600}
.tag.err{background:#fbe9e7;color:var(--err)}.tag.warn{background:#fff5dc;color:var(--warn)}.tag.grey{background:#eceff0;color:#555}
.neg{color:var(--err);font-weight:600}.pos{color:var(--ok);font-weight:600}
.bare{display:flex;align-items:flex-start;justify-content:center;min-height:100vh;padding:40px 16px}
.auth-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;width:100%;max-width:400px;text-align:left}
.auth-box.wide{max-width:640px}
.auth-logo{width:72px;height:72px;object-fit:contain;display:block;margin:0 auto 10px}
.auth-box h1{font-size:1.3rem;text-align:center}.auth-box>.muted{text-align:center}
.marks-grid input{width:80px;padding:6px;border:1px solid #c9d4d0;border-radius:6px}
.marks-grid input.remark{width:100%;min-width:180px}
.kid{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center}
.list-item{border-bottom:1px solid var(--line);padding:10px 0}.list-item:last-child{border:0}
.quiz-q{border:1px solid var(--line);border-radius:8px;padding:12px;margin-bottom:12px}
.quiz-q label{display:block;font-weight:400;margin:6px 0}
.quiz-q label input{display:inline;width:auto;margin-right:6px}
/* Printable documents */
.doc{background:#fff;max-width:820px;margin:0 auto;padding:28px;border:1px solid var(--line)}
.doc-head{display:flex;gap:16px;align-items:center;border-bottom:3px solid var(--brand);padding-bottom:12px;margin-bottom:14px}
.doc-head img{width:70px;height:70px;object-fit:contain}
.doc-head h2{margin:0;font-size:1.3rem}.doc-head p{margin:2px 0;color:var(--muted);font-size:.85rem}
.doc table th,.doc table td{padding:6px 8px;font-size:.88rem}
.doc .meta{display:grid;grid-template-columns:repeat(3,1fr);gap:6px 16px;font-size:.9rem;margin-bottom:12px}
.doc .sign{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:30px;font-size:.85rem}
.doc .sign div{border-top:1px solid #999;padding-top:4px}
.page-break{page-break-after:always}
.no-print{margin:0 auto 14px;max-width:820px}
@media (max-width:860px){
  .side{position:fixed;left:-260px;z-index:20;transition:left .2s}
  .side.open{left:0;box-shadow:0 0 0 100vmax rgba(0,0,0,.35)}
  .menu{display:block}
  main{padding:0 14px 30px}
  .doc .meta{grid-template-columns:1fr 1fr}
}
@media print{
  body{background:#fff}
  .side,.top,.no-print,.flash,.btn{display:none!important}
  main{padding:0}
  .doc{border:0;padding:0;max-width:none}
  .bare{display:block;padding:0}
}