:root{
  --bg:#f4f7fb;
  --surface:#ffffff;
  --text:#172033;
  --muted:#667085;
  --line:#e5eaf1;
  --primary:#2e5aac;
  --primary-soft:#e9f0ff;
  --success:#17845b;
  --danger:#b42318;
  --shadow:0 10px 30px rgba(35,48,75,.08);
  --radius:18px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{text-decoration:none;color:inherit}
.topbar{min-height:84px;padding:18px max(24px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar h1{margin:2px 0 0;font-size:27px}
.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:800;color:var(--primary)}
.container{max-width:1180px;margin:0 auto;padding:28px 20px 48px}
.hero{background:linear-gradient(135deg,#17376f,#2f66bd);color:#fff;border-radius:24px;padding:28px;display:flex;gap:20px;justify-content:space-between;align-items:center;box-shadow:var(--shadow);margin-bottom:22px}
.hero.compact{padding:24px}
.hero h2{margin:0 0 8px;font-size:30px}
.hero p{margin:0;max-width:720px;opacity:.9;line-height:1.5}
.hero-stat{background:rgba(255,255,255,.14);min-width:180px;padding:18px;border-radius:18px;text-align:center}
.hero-stat span{display:block;font-size:13px;opacity:.85}.hero-stat strong{font-size:42px}
.summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.summary-card,.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.summary-card{padding:20px}.summary-card span{display:block;color:var(--muted);font-size:14px}.summary-card strong{display:block;font-size:34px;margin-top:4px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}
.section-heading h2,.panel h2{margin:0;font-size:21px}.section-heading p{margin:4px 0 0;color:var(--muted)}
.class-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.class-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}
.class-card-head{display:flex;justify-content:space-between;align-items:center}.class-card h3{font-size:24px;margin:0}.open-pill{background:var(--primary-soft);color:var(--primary);font-weight:800;border-radius:999px;padding:6px 10px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}
.metric{padding:10px;border-radius:12px;background:#f7f9fc}.metric span{font-size:11px;color:var(--muted);display:block}.metric strong{font-size:20px}
.panel{padding:20px;margin-bottom:22px}
.bars{display:flex;flex-direction:column;gap:12px}
.bar-row{display:grid;grid-template-columns:90px 1fr 44px;gap:10px;align-items:center}
.bar-track{height:14px;background:#edf1f6;border-radius:99px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,#2e5aac,#6b8fda);border-radius:99px;min-width:4px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:700}
.full{grid-column:1/-1}
input,select,textarea{width:100%;padding:12px;border:1px solid #ccd5e0;border-radius:12px;background:#fff;font:inherit;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd0fb;border-color:var(--primary)}
.form-actions{display:flex;justify-content:flex-end}
.button{border:0;border-radius:12px;padding:11px 15px;font-weight:800;cursor:pointer;font:inherit}
.button.primary{background:var(--primary);color:#fff}.button.secondary{background:#eef3fb;color:#1f3d73}.button.danger{background:#feeceb;color:var(--danger)}
.top-actions{display:flex;gap:8px;flex-wrap:wrap}
.badge{background:var(--primary-soft);color:var(--primary);padding:6px 10px;border-radius:999px}
.record-list{display:flex;flex-direction:column;gap:10px}
.record{border:1px solid var(--line);border-radius:14px;padding:13px;display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.record-main strong{display:block}.record-meta{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.5}
.search{max-width:320px}
.small-button{border:0;background:#eaf7f1;color:var(--success);font-weight:800;padding:8px 10px;border-radius:10px;cursor:pointer}
.message{margin-top:12px;padding:11px 13px;border-radius:10px;background:#eaf7f1;color:var(--success);font-weight:700}.hidden{display:none}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:11px;border-bottom:1px solid var(--line);white-space:nowrap}th{font-size:12px;text-transform:uppercase;color:var(--muted)}
.status{font-weight:800}.status.open{color:#b54708}.status.done{color:var(--success)}
footer{text-align:center;padding:25px;color:var(--muted);font-size:12px}
@media(max-width:800px){
  .hero{align-items:flex-start;flex-direction:column}.hero-stat{width:100%}
  .summary-grid,.class-grid,.two-col{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}.full{grid-column:auto}
  .topbar{align-items:flex-start;gap:12px;flex-direction:column}
  .top-actions{width:100%}
  .button.secondary{flex:1;text-align:center}
  .section-heading{align-items:flex-start;flex-direction:column}
  .search{max-width:none}
}

.class-staff{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;line-height:1.6;color:var(--muted)}
.class-staff strong{color:var(--text)}