:root{
  --bg:#f4f6fb;--card:#fff;--ink:#1d2433;--muted:#667085;--line:#e4e7ef;
  --brand:#1f3a8a;--brand-2:#2c4fc0;--brand-soft:#e8edfb;--accent:#f59e0b;
  --ok:#15803d;--ok-soft:#e7f6ec;--bad:#c2410c;--bad-soft:#fdeee6;--warn:#a16207;--warn-soft:#fdf6e3;
  --g1:#e0ecff;--g2:#ffe9d9;--radius:12px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
a{color:var(--brand-2);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:24px;margin:0 0 4px;letter-spacing:-.01em}h2{font-size:18px;margin:0 0 12px}h3{font-size:15px;margin:0 0 8px}
p{margin:0 0 10px}small,.muted{color:var(--muted)}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- shell */
.topbar{display:none}
.sidebar{position:fixed;inset:0 auto 0 0;width:236px;background:#101b3d;color:#c9d2ea;padding:14px 10px;display:flex;flex-direction:column;gap:2px;overflow-y:auto;z-index:30}
.sidebar a{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:9px;color:#c9d2ea;font-weight:500}
.sidebar a:hover{background:rgba(255,255,255,.07);text-decoration:none;color:#fff}
.sidebar a.active{background:var(--brand-2);color:#fff}
.sidebar .badge{margin-left:auto;background:var(--accent);color:#1d2433;border-radius:99px;font-size:11px;padding:1px 7px}
.side-brand{margin-bottom:10px;color:#fff!important;font-weight:700}
.side-brand small{display:block;font-weight:400;font-size:11px;color:#9aa6c7}
.side-foot{margin-top:auto;border-top:1px solid rgba(255,255,255,.1);padding-top:8px}
.logo{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--accent);color:#101b3d;font-weight:800;flex:none}
.main{margin-left:236px;padding:28px 32px 90px;max-width:1280px}
.no-nav .main{margin:0 auto;max-width:440px;padding:8vh 16px}
.scrim{display:none}
@media (max-width:900px){
  .topbar{display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:20;background:#101b3d;color:#fff;padding:10px 12px}
  .topbar .brand{color:#fff;font-weight:700;display:flex;align-items:center;gap:8px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar .logo{width:28px;height:28px}
  .topuser{color:#c9d2ea;font-size:13px;max-width:34vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .menu-btn{background:none;border:0;color:#fff;padding:4px;display:grid}
  .sidebar{transform:translateX(-100%);transition:transform .2s}
  .nav-open .sidebar{transform:none}
  .nav-open .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:25}
  .main{margin-left:0;padding:18px 16px 60px}
}

/* ---------- components */
.page-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:20px}
.page-head .actions{display:flex;flex-wrap:wrap;gap:8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:18px}
.card.tight{padding:0;overflow:hidden}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.card-head h2{margin:0}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1100px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:700px){.grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.stat .n{font-size:28px;font-weight:700;letter-spacing:-.02em}
.stat .l{color:var(--muted);font-size:13px}
.stat.bad .n{color:var(--bad)}.stat.ok .n{color:var(--ok)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 14px;border-radius:9px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{text-decoration:none;border-color:#c8cedb}
.btn-primary{background:var(--brand-2);border-color:var(--brand-2);color:#fff}.btn-primary:hover{background:var(--brand)}
.btn-danger{color:var(--bad);border-color:#f3c9b6}.btn-ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn-sm{padding:5px 10px;font-size:13px}
.btn-block{width:100%}
.link-btn{background:none;border:0;color:var(--brand-2);font:inherit;cursor:pointer;padding:0}

.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600;background:#fafbfd}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;white-space:nowrap}
.nowrap{white-space:nowrap}

form .row{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;color:#344054}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=time],input[type=tel],select,textarea{width:100%;padding:9px 11px;border:1px solid #cfd4df;border-radius:9px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd0ff;border-color:var(--brand-2)}
textarea{min-height:110px;resize:vertical}
.check{display:flex;align-items:center;gap:8px;font-weight:500}
.check input{width:18px;height:18px}
.help{font-size:12px;color:var(--muted);margin-top:4px}

.pill{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;background:#eef0f5;color:#344054;white-space:nowrap}
.pill-ok{background:var(--ok-soft);color:var(--ok)}.pill-bad{background:var(--bad-soft);color:var(--bad)}.pill-warn{background:var(--warn-soft);color:var(--warn)}.pill-info{background:var(--brand-soft);color:var(--brand)}
.pill-g1{background:var(--g1);color:#1e3a8a}.pill-g2{background:var(--g2);color:#9a3412}

.flash{padding:12px 14px;border-radius:10px;margin-bottom:16px;font-weight:500}
.flash-ok{background:var(--ok-soft);color:var(--ok)}.flash-error{background:var(--bad-soft);color:var(--bad)}.flash-info{background:var(--brand-soft);color:var(--brand)}

.empty{padding:26px;text-align:center;color:var(--muted)}
.list{list-style:none;margin:0;padding:0}
.list li{padding:11px 0;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center;justify-content:space-between}
.list li:last-child{border-bottom:0}

/* ---------- schedule */
.week-nav{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.week{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
@media (max-width:900px){.week{grid-template-columns:minmax(0,1fr)}}
.day h3{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:8px}
.day.today h3{color:var(--brand-2)}
.slot{display:block;border-radius:10px;padding:10px 12px;margin-bottom:10px;border:1px solid var(--line);background:#fff;color:var(--ink);box-shadow:var(--shadow)}
.slot:hover{text-decoration:none;border-color:#b9c4dd}
.slot.g1{border-left:4px solid #3b6fe0}.slot.g2{border-left:4px solid #ea7a2c}.slot.mk{border-left:4px solid var(--accent)}
.slot.cancelled{opacity:.55;text-decoration:line-through}
.slot .t{font-weight:700}.slot .m{font-size:12px;color:var(--muted)}
.slot .sub{font-size:12px;color:var(--bad);font-weight:600}

/* ---------- attendance */
.roll{display:grid;gap:10px}
.roll-item{display:flex;align-items:center;gap:12px;justify-content:space-between;border:1px solid var(--line);border-radius:10px;padding:10px 12px;flex-wrap:wrap}
.seg{display:inline-flex;border:1px solid #cfd4df;border-radius:9px;overflow:hidden}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{margin:0;padding:7px 12px;font-size:13px;cursor:pointer;border-right:1px solid #cfd4df;font-weight:600;color:#475467}
.seg label:last-of-type{border-right:0}
.seg input:checked+label.p{background:var(--ok);color:#fff}
.seg input:checked+label.a{background:var(--bad);color:#fff}
.seg input:checked+label.x{background:var(--warn);color:#fff}

.progress{height:8px;background:#e9edf5;border-radius:99px;overflow:hidden;min-width:80px}
.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand-2),#5b8cff)}
.lesson-list{list-style:none;padding:0;margin:0}
.lesson-list li{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px dashed var(--line)}
.lesson-list li.done{color:var(--ok)}
.dot{width:10px;height:10px;border-radius:50%;background:#d0d5dd;flex:none}.done .dot{background:var(--ok)}

.msg{border-bottom:1px solid var(--line);padding:12px 16px;display:block;color:var(--ink)}
.msg:hover{background:#fafbfd;text-decoration:none}
.msg.unread{background:#f5f8ff}.msg.unread .s{font-weight:700}
.msg .meta{font-size:12px;color:var(--muted)}
.msg-body{line-height:1.6}

.auth-card{background:#fff;border-radius:16px;box-shadow:0 10px 30px rgba(16,27,61,.12);padding:28px}
.auth-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;margin-bottom:18px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{padding:6px 12px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:600;font-size:13px}
.tabs a.active{background:var(--brand-2);border-color:var(--brand-2);color:#fff}
details.inline summary{cursor:pointer;color:var(--brand-2);font-weight:600}
@media print{.sidebar,.topbar,.no-print,.page-head .actions{display:none!important}.main{margin:0;padding:0}.card{box-shadow:none}}
.logout-form{margin:0}
.logout-form button{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:9px;color:#c9d2ea;font:inherit;font-weight:500;background:none;border:0;width:100%;cursor:pointer;text-align:left}
.logout-form button:hover{background:rgba(255,255,255,.07);color:#fff}
/* ---------- помош */
.help-btn{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#101b3d!important;font-weight:800;text-decoration:none!important;flex:none}
.help-fab{position:fixed;right:22px;bottom:22px;z-index:15;display:flex;align-items:center;gap:8px;background:#101b3d;color:#fff;padding:9px 16px 9px 9px;border-radius:99px;box-shadow:0 6px 18px rgba(16,27,61,.25);font-weight:600}
.help-fab span{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#101b3d;font-weight:800}
.help-fab:hover{text-decoration:none;background:var(--brand-2)}
@media (max-width:900px){.help-fab{display:none}}
.help-sec{padding:0}
.help-sec summary{cursor:pointer;list-style:none;padding:16px 18px;display:flex;align-items:center;justify-content:space-between}
.help-sec summary::-webkit-details-marker{display:none}
.help-sec summary h2{margin:0}
.help-sec summary::after{content:"+";font-size:22px;color:var(--brand-2);font-weight:600}
.help-sec[open] summary::after{content:"–"}
.help-body{padding:0 18px 16px;line-height:1.65}
.help-body p,.help-body li{max-width:820px}
.steps{padding-left:22px;margin:6px 0 12px}.steps li{margin-bottom:6px}
.help-intro{border-left:4px solid var(--accent)}
.help-table{margin:8px 0 12px;max-width:620px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.help-contact{background:var(--brand-soft);border-color:#cdd8f6}