:root {
  --brand: #0d4a8f; --brand-dark: #0a3a70; --bg: #f3f5f8; --card: #fff; --text: #1d2733; --muted: #5d6b7a;
  --border: #d5dce4; --ok: #17803d; --ok-bg: #e7f6ec; --err: #b42318; --err-bg: #fdecea;
  --warn: #8a5a00; --warn-bg: #fff6e0; --info: #0b5394; --info-bg: #e8f1fb; --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif; color: var(--text); background: var(--bg); }
a { color: var(--brand); }
.topbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem 1rem; padding: .6rem 1rem; background: #fff; border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; text-decoration: none; color: var(--text); }
.brand img { object-fit: contain; }
.topbar nav { display: flex; align-items: center; gap: .25rem 1rem; flex-wrap: wrap; }
.topbar nav a { text-decoration: none; padding: .3rem .1rem; }
.topbar nav a.active { font-weight: 700; border-bottom: 2px solid var(--brand); }
main { padding: 1rem; }
.card { background: var(--card); max-width: 760px; margin: 0 auto 1rem; padding: 1.25rem 1.25rem 1.5rem; border-radius: var(--radius); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.card.narrow { max-width: 420px; margin-top: 8vh; }
.card.wide { max-width: 1400px; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
label { display: block; margin: 0 0 1rem; font-weight: 600; }
input, select, textarea, button, .button { font: inherit; }
input, select, textarea { display: block; width: 100%; margin-top: .3rem; padding: .6rem .7rem; border: 1px solid var(--border); border-radius: 8px; background: #fff; font-weight: 400; min-height: 44px; }
input:focus, select:focus, textarea:focus { outline: 3px solid rgba(13,74,143,.25); border-color: var(--brand); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
@media (max-width: 600px) { .grid2 { grid-template-columns: 1fr; } }
button, .button { display: inline-block; padding: .6rem 1rem; min-height: 44px; border-radius: 8px; border: 1px solid var(--brand); background: #fff; color: var(--brand); cursor: pointer; text-decoration: none; font-weight: 600; }
button.primary, .button.primary { background: var(--brand); color: #fff; }
button.primary:hover { background: var(--brand-dark); }
button.secondary, .button.secondary { border-color: var(--border); color: var(--text); }
button.link, .button.link { border: none; background: none; color: var(--brand); padding: .3rem; min-height: 0; font-weight: 400; }
button:disabled { opacity: .6; cursor: wait; }
.wide { width: 100%; }
form.inline { display: inline; margin: 0; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: .75rem 1rem; margin: 0 0 1rem; }
legend { font-weight: 700; padding: 0 .3rem; }
label.radio { display: flex; align-items: center; gap: .5rem; font-weight: 500; margin: .4rem 0; }
label.radio input { width: auto; min-height: 0; margin: 0; }
.pw-box { margin: .25rem 0 .75rem 1.6rem; }
.pw-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.pw-row input { flex: 1 1 220px; margin: 0; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.hint { display: block; color: var(--muted); font-size: .88rem; font-weight: 400; margin-top: .25rem; }
.field-error { display: block; color: var(--err); font-size: .9rem; font-weight: 600; margin-top: .25rem; }
.ok-text { color: var(--ok); } .err-text { color: var(--err); font-weight: 600; } .info-text { color: var(--info); } .warn-text { color: var(--warn); font-weight: 600; }
.alert { padding: .75rem 1rem; border-radius: 8px; margin: 0 0 1rem; border-left: 4px solid; }
.alert.success { background: var(--ok-bg); border-color: var(--ok); }
.alert.error { background: var(--err-bg); border-color: var(--err); }
.alert.warn { background: var(--warn-bg); border-color: var(--warn); }
.alert.info { background: var(--info-bg); border-color: var(--info); }
.actions { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0 0; align-items: center; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; margin: 0 0 1rem; }
dl.facts dt { color: var(--muted); } dl.facts dd { margin: 0; word-break: break-word; }
@media (max-width: 500px) { dl.facts { grid-template-columns: 1fr; } dl.facts dd { margin-bottom: .4rem; } }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.big { font-size: 1.3rem; font-weight: 700; letter-spacing: .03em; }
.print-card { border: 2px dashed var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; margin: 0 0 1rem; }
.print-card h2 { margin: .25rem 0 .5rem; font-size: 1.2rem; }
.print-card .student { font-weight: 700; margin: 0 0 .75rem; }
.print-card .note { font-weight: 600; margin: .5rem 0 0; }
.print-logo { width: 90px; height: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; }
.filters { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .5rem; }
.filters input, .filters select { width: auto; flex: 1 1 180px; margin: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .5rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: #f8fafc; white-space: nowrap; }
tr.row-error td { background: #fff7f6; }
.pager { display: flex; gap: 1rem; justify-content: center; margin-top: 1rem; }
@media (max-width: 800px) {
  table thead { display: none; }
  table, tbody, tr, td { display: block; width: 100%; }
  tr { border: 1px solid var(--border); border-radius: 8px; margin-bottom: .75rem; padding: .25rem .5rem; }
  td { border: none; padding: .2rem 0; }
  td[data-l]::before { content: attr(data-l) ": "; color: var(--muted); font-size: .85rem; }
}
@media print {
  @page { size: A5 portrait; margin: 12mm; }
  body { background: #fff; }
  .no-print, .topbar, .alert, .card > h1, .actions { display: none !important; }
  main, .card { padding: 0; margin: 0; box-shadow: none; max-width: none; }
  .print-card { border: none; padding: 0; }
  .print-logo { width: 110px; }
  .big { font-size: 16pt; }
}