*{box-sizing:border-box}
:root{
  --bg:#f4f7fb;--surface:#fff;--text:#17212f;--muted:#65758b;--line:#dfe6ef;
  --primary:#2563eb;--primary2:#4f46e5;--good:#16794b;--danger:#b42318;
  --soft:#eef4ff;--shadow:0 16px 44px rgba(15,23,42,.08)
}
html{scroll-behavior:smooth}
body{
  margin:0;font:15px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--text);
  background:radial-gradient(circle at top left,rgba(37,99,235,.09),transparent 30%),var(--bg)
}
a{color:inherit}
.public-header{
  display:flex;justify-content:space-between;align-items:center;gap:18px;padding:16px 24px;
  background:rgba(255,255,255,.93);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;
  backdrop-filter:blur(12px)
}
.brand{display:flex;gap:12px;align-items:center;min-width:0}
.brand-mark{
  width:46px;height:46px;border-radius:15px;display:grid;place-items:center;color:white;font-weight:900;
  background:linear-gradient(135deg,var(--primary),#7c3aed);box-shadow:var(--shadow)
}
.brand strong{display:block;font-size:1.05rem}
.brand span{display:block;color:var(--muted);font-size:.88rem}
.header-actions{display:flex;gap:9px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:9px 14px;border-radius:12px;
  text-decoration:none;border:1px solid var(--line);background:#fff;font-weight:700;cursor:pointer;color:var(--text)
}
.btn.primary{border-color:transparent;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,23,42,.08)}
.page{width:min(1500px,calc(100% - 28px));margin:22px auto 42px}
.hero{
  padding:22px;border-radius:24px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(37,99,235,.09),rgba(124,58,237,.06)),#fff;
  box-shadow:var(--shadow);display:flex;justify-content:space-between;gap:20px;align-items:end;flex-wrap:wrap
}
.hero h1{margin:0 0 7px;font-size:clamp(1.65rem,3vw,2.35rem);letter-spacing:-.03em}
.hero p{margin:0;color:var(--muted);max-width:820px}
.filters{display:flex;gap:10px;align-items:end;flex-wrap:wrap}
.filters label{display:grid;gap:5px;color:var(--muted);font-weight:700;font-size:.84rem}
select{
  min-height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--text);padding:8px 34px 8px 11px;font:inherit
}
.notice{
  margin:14px 0;padding:11px 14px;border-radius:14px;background:var(--soft);border:1px solid #cfe0ff;color:#35537a
}
.journal-card{
  margin-top:16px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow);overflow:hidden
}
.table-toolbar{
  display:flex;justify-content:space-between;gap:14px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap
}
.table-toolbar strong{font-size:1.03rem}
.legend{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:.84rem}
.legend span{padding:5px 9px;border:1px solid var(--line);border-radius:999px;background:#fff}
.table-scroll{overflow:auto;max-width:100%}
.public-table{border-collapse:separate;border-spacing:0;min-width:max-content;width:100%;font-size:13px}
.public-table th,.public-table td{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);height:39px;padding:5px 7px;text-align:center;background:#fff
}
.public-table thead th{position:sticky;top:0;z-index:4;background:#f7f9fc;font-size:11px;white-space:nowrap}
.public-table .sticky1{position:sticky;left:0;z-index:5;min-width:44px;width:44px}
.public-table .sticky2{position:sticky;left:44px;z-index:5;min-width:72px;width:72px}
.public-table .sticky3{position:sticky;left:116px;z-index:5;min-width:120px;width:120px;text-align:left}
.public-table thead .sticky1,.public-table thead .sticky2,.public-table thead .sticky3{z-index:8;background:#f7f9fc}
.student-first{font-weight:800;font-size:1.02rem}
.student-name{font-weight:750}
.date-col{min-width:64px}
.date-col small{display:block;color:var(--muted);font-weight:600}
.result-cell{font-weight:800}
.result-grade{background:#eefbf4!important;color:#126b43}
.result-absent{background:#fff0f0!important;color:var(--danger)}
.result-present{background:#eef4ff!important;color:#2157b7}
.result-pending{color:#9aa5b1}
.summary-col{min-width:82px;background:#fbfcfe!important;font-weight:800}
.average{font-size:1.05rem;color:#194ea3}
.empty{
  padding:38px 20px;text-align:center;color:var(--muted)
}
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{
  width:min(440px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:24px
}
.login-card h1{margin:0 0 6px;font-size:1.65rem}
.login-card p{margin:0 0 18px;color:var(--muted)}
.form-grid{display:grid;gap:13px}
.form-grid label{display:grid;gap:6px;font-weight:700;font-size:.9rem}
.form-grid input{
  width:100%;min-height:44px;padding:9px 11px;border:1px solid var(--line);border-radius:12px;font:inherit
}
.error{padding:10px 12px;border-radius:12px;background:#fff1f1;color:#a51616;border:1px solid #ffd4d4;margin-bottom:12px}
.success{padding:10px 12px;border-radius:12px;background:#eefbf4;color:#126b43;border:1px solid #ccefdc;margin-bottom:12px}
.small-note{font-size:.83rem;color:var(--muted);margin-top:12px}
@media(max-width:760px){
  .public-header{align-items:flex-start;flex-direction:column;padding:13px}
  .page{width:min(100%,calc(100% - 14px));margin-top:12px}
  .hero{padding:16px;border-radius:18px}
  .journal-card{border-radius:16px}
}