:root{--bg:#f4f6f5;--card:#fff;--ink:#16211b;--muted:#5f6f66;--line:#dfe5e1;--brand:#14532d;--brand-2:#1f7a45;--ok:#15803d;--bad:#b91c1c;--warn:#b45309;--side:#0f2a1b;--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-2)}
h1{font-size:1.5rem;margin:0 0 14px}h2{font-size:1.25rem;margin:0 0 12px}h3{font-size:1.05rem;margin:0 0 10px}
.muted{color:var(--muted)}.small{font-size:.86rem}.ok{color:var(--ok);font-weight:700}.bad{color:var(--bad);font-weight:700}.num{text-align:right}.center{text-align:center}
/* layout */
.side{position:fixed;inset:0 auto 0 0;width:250px;background:var(--side);color:#cfe3d6;overflow-y:auto;z-index:30;transition:transform .2s}
.side-brand{display:flex;gap:10px;align-items:center;padding:16px;color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.08)}
.side-brand .dot{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:var(--brand-2);font-weight:800}
.side-brand small{display:block;color:#9fbfac;font-size:.75rem}
.side .grp{padding:14px 16px 4px;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:#7fa18d}
.side nav a{display:flex;gap:10px;align-items:center;padding:7px 16px;color:#d8e8de;text-decoration:none;font-size:.92rem}
.side nav a:hover{background:rgba(255,255,255,.06)}.side nav a.on{background:var(--brand-2);color:#fff}
.side .ic{width:20px;text-align:center}
.with-side .top,.with-side .main{margin-left:250px}
.top{display:flex;align-items:center;gap:12px;background:#fff;border-bottom:1px solid var(--line);padding:12px 22px;position:sticky;top:0;z-index:20}
.top-r{margin-left:auto;font-size:.9rem;color:var(--muted)}
.menu-btn{display:none;border:0;background:none;font-size:1.4rem;cursor:pointer}
.main{padding:22px;max-width:1300px}
.portal .main{margin:0 auto}
.portal-top{background:var(--brand);color:#fff}.portal-top a,.portal-top .top-r{color:#e7f3eb}
@media (max-width:900px){.side{transform:translateX(-100%)}.side-open .side{transform:none}.with-side .top,.with-side .main{margin-left:0}.menu-btn{display:block}.main{padding:14px}}
/* components */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.card.flush{padding:0;overflow:hidden}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:800px){.g2,.g3,.g4{grid-template-columns:1fr}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}.stat b{display:block;font-size:1.6rem}.stat span{color:var(--muted);font-size:.85rem}
.head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.head h1{margin:0}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink);text-decoration:none;font:inherit;font-weight:600;cursor:pointer;line-height:1.2}
.btn:hover{border-color:#b9c6be}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-2)}
.btn-green{background:var(--ok);border-color:var(--ok);color:#fff}.btn-danger{color:var(--bad)}.btn-sm{padding:5px 10px;font-size:.85rem}.btn-lg{padding:11px 20px;font-size:1rem}
.btns{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.alert{padding:11px 14px;border-radius:8px;margin-bottom:14px;border:1px solid}.alert-success{background:#ecfdf3;border-color:#a7e3bd;color:#14532d}
.alert-error{background:#fef2f2;border-color:#f3b4b4;color:#7f1d1d}.alert-info{background:#eff6ff;border-color:#bcd3f5;color:#1e3a8a}
.badge{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.75rem;font-weight:700;background:#eef1ef;color:#44524a}
.badge-ok{background:#dcfce7;color:#166534}.badge-bad{background:#fee2e2;color:#991b1b}.badge-warn{background:#fef3c7;color:#92400e}
.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table th{background:#f7f9f8;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.table-wrap{overflow-x:auto}.table tr:hover td{background:#fbfcfb}
.form label{display:block;font-weight:600;font-size:.88rem;margin-bottom:12px}
.form input:not([type=checkbox]):not([type=radio]),.form select,.form textarea,.filters input,.filters select,.grid-input{width:100%;padding:8px 10px;border:1px solid #cbd5cf;border-radius:7px;font:inherit;font-weight:400;background:#fff;margin-top:4px}
.form textarea{min-height:80px}.form .help{display:block;font-weight:400;color:var(--muted);font-size:.8rem;margin-top:3px}
.form label.check{display:flex;gap:8px;align-items:center;font-weight:500}
.row-2,.row-3,.row-4{display:grid;gap:12px}.row-2{grid-template-columns:repeat(2,minmax(0,1fr))}.row-3{grid-template-columns:repeat(3,minmax(0,1fr))}.row-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:700px){.row-2,.row-3,.row-4{grid-template-columns:1fr}}
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px}.filters label{font-size:.8rem;font-weight:600;color:var(--muted)}
.filters select,.filters input{width:auto;min-width:150px}
.thumb{width:40px;height:40px;object-fit:cover;border-radius:6px;background:#eee}
.marks-grid input{width:70px;padding:5px 6px;border:1px solid #cbd5cf;border-radius:6px;text-align:center;font:inherit}
.marks-grid input.err{border-color:var(--bad);background:#fff1f1}
.marks-grid td,.marks-grid th{padding:5px 8px;white-space:nowrap}
.sticky-save{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 0;margin-top:10px}
/* auth */
.auth-body{display:grid;place-items:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#0f2a1b,#1f7a45)}
.auth-card{background:#fff;border-radius:14px;padding:28px;width:100%;max-width:420px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.tabs{display:flex;gap:4px;margin-bottom:14px;border-bottom:1px solid var(--line)}.tabs a{padding:8px 12px;text-decoration:none;color:var(--muted);font-weight:600;border-bottom:2px solid transparent}
.tabs a.on{color:var(--brand);border-color:var(--brand)}