:root{
  --bg:#0b1220;
  --card:#0f1a33;
  --line:rgba(255,255,255,.10);
  --text:#eaf0ff;
  --muted:rgba(234,240,255,.72);
  --accent:#6ec6ff;
  --accent2:#9de1ff;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
  background: radial-gradient(1200px 700px at 15% 10%, rgba(110,198,255,.10), transparent 55%),
              radial-gradient(1000px 700px at 85% 10%, rgba(157,225,255,.08), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:24px}

.top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:16px;
}

.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:40px;height:40px;border-radius:14px;
  display:grid;place-items:center;
  background:linear-gradient(135deg, rgba(110,198,255,.35), rgba(157,225,255,.18));
  border:1px solid var(--line);
  font-weight:800;
}

.brandTitle{font-weight:800;font-size:16px}
.brandSub{color:var(--muted);font-size:12px}

.right{display:flex;gap:10px;align-items:center}

.studentCard{
  display:flex;align-items:center;gap:14px;
  background:linear-gradient(180deg, rgba(15,26,51,.92), rgba(12,20,42,.92));
  border:1px solid var(--line);
  border-radius:18px;
  padding:14px 16px;
  margin-bottom:18px;
}

.avatar{
  width:44px;height:44px;border-radius:16px;
  display:grid;place-items:center;
  background:rgba(110,198,255,.18);
  border:1px solid var(--line);
  font-weight:900;
}

.studentMeta h1{margin:0;font-size:20px}
.muted{color:var(--muted)}
.tiny{font-size:12px}

.grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
@media (max-width:860px){ .grid{grid-template-columns:1fr} }

.card{
  background:linear-gradient(180deg, rgba(15,26,51,.92), rgba(12,20,42,.92));
  border:1px solid var(--line);
  border-radius:18px;
  padding:16px;
}

.cardHead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.cardHead h2{margin:0;font-size:15px}

.pill{
  padding:5px 10px;border-radius:999px;
  background:rgba(110,198,255,.12);
  border:1px solid var(--line);
  font-size:12px;font-weight:700;
}

.btn{
  background:var(--accent);
  color:#06101f;
  border:0;
  border-radius:12px;
  padding:10px 12px;
  font-weight:800;
  cursor:pointer;
}
.btn.ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--line);
}
.btn:hover{filter:brightness(1.03)}

.phrase{margin:0; font-size:16px; line-height:1.45}

.tableWrap{overflow:auto;border-radius:14px;border:1px solid var(--line)}
.table{width:100%;border-collapse:collapse;min-width:520px}
.table th,.table td{padding:10px;border-bottom:1px solid rgba(255,255,255,.06);text-align:left;font-size:13px}
.table th{color:rgba(234,240,255,.85);font-weight:800;background:rgba(0,0,0,.10)}
.table tr:last-child td{border-bottom:none}

.tasks{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.task{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(0,0,0,.10);
}
.task input{margin-top:3px}
.taskTitle{font-weight:800;font-size:13px}
.taskMeta{font-size:12px;color:var(--muted)}

.cardFoot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.hint{margin:8px 0 0;color:var(--muted);font-size:12px}

.pdfGrid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:560px){ .pdfGrid{grid-template-columns:1fr} }

.pdf{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:12px;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(0,0,0,.10);
}
.pdfTitle{font-weight:800;font-size:13px}
.pdfSub{font-size:12px;color:var(--muted)}
.pdf a{font-weight:900;color:var(--accent2)}

.footer{margin-top:20px;padding:16px 0;text-align:center;border-top:1px solid rgba(255,255,255,.06)}

.authWrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.authCard{
  width:min(440px, 100%);
  background:linear-gradient(180deg, rgba(15,26,51,.92), rgba(12,20,42,.92));
  border:1px solid var(--line);
  border-radius:20px;
  padding:18px;
}
.authBrand{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.authLogo{width:44px;height:44px;border-radius:16px;display:grid;place-items:center;background:rgba(110,198,255,.18);border:1px solid var(--line);font-weight:900}
.authTitle{font-weight:900;font-size:18px}

.form{display:grid;gap:10px}
label{font-size:12px;color:rgba(234,240,255,.85);font-weight:800}
input, .textarea{
  width:100%;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:#0b142a;
  color:var(--text);
  outline:none;
}
.textarea{font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; line-height:1.35}
.alert{
  padding:10px 12px;border-radius:14px;
  border:1px solid rgba(255,80,80,.30);
  background:rgba(255,80,80,.10);
  margin:10px 0;
}
.alert.ok{
  border:1px solid rgba(80,255,160,.25);
  background:rgba(80,255,160,.10);
}

.adminGrid{display:grid;grid-template-columns:320px 1fr;gap:14px}
@media (max-width:980px){ .adminGrid{grid-template-columns:1fr} }
.list{display:grid;gap:8px;margin-top:10px}
.listItem{
  padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:rgba(0,0,0,.10);
}
.listItem.active{outline:2px solid rgba(110,198,255,.35)}
.liTitle{font-weight:900;font-size:13px}
.liSub{font-size:12px;color:var(--muted)}
.sep{border:none;border-top:1px solid rgba(255,255,255,.08);margin:14px 0}