:root {
  --ink: #1d2433;
  --muted: #5f6b7d;
  --line: #dfe3ea;
  --bg: #f5f6f8;
  --card: #fff;
  --brand: #2f5d8a;
  --brand-ink: #fff;
  --ok: #1f7a4d;
  --ok-bg: #e5f4ec;
  --bad: #b3261e;
  --bad-bg: #fbe9e7;
  --warn: #8a5a00;
  --warn-bg: #fff3d6;
  --info-bg: #e8f0f8;
  --radius: 8px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
a { color: var(--brand); }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.topbar {
  background: var(--brand);
  color: var(--brand-ink);
  padding: .6rem 1rem;
  display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; align-items: center;
}
.topbar a { color: var(--brand-ink); text-decoration: none; }
.topbar .brand { font-weight: 700; letter-spacing: .02em; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 1rem; flex: 1; }
.topbar form { margin: 0; }
.topbar .who { font-size: .9rem; opacity: .9; }
.topbar button.linkbtn { background: none; border: 0; color: inherit; cursor: pointer; font: inherit; text-decoration: underline; padding: 0; }

main { max-width: 1200px; margin: 0 auto; padding: 1.25rem 1rem 3rem; }
.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: .75rem; margin-bottom: 1rem; }
.subnav { display: flex; flex-wrap: wrap; gap: .4rem; margin: .5rem 0 1rem; }
.subnav a { padding: .3rem .7rem; border: 1px solid var(--line); border-radius: 999px; background: var(--card); text-decoration: none; font-size: .9rem; }
.subnav a.active { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.stat { font-size: 1.6rem; font-weight: 700; }

.messages { list-style: none; padding: 0; margin: 0 0 1rem; }
.messages li { padding: .6rem .9rem; border-radius: var(--radius); margin-bottom: .4rem; background: var(--info-bg); }
.messages .success { background: var(--ok-bg); color: var(--ok); }
.messages .error { background: var(--bad-bg); color: var(--bad); }
.messages .warning { background: var(--warn-bg); color: var(--warn); }

.btn, button[type=submit] {
  display: inline-block; padding: .45rem .9rem; border-radius: 6px; border: 1px solid var(--brand);
  background: var(--brand); color: var(--brand-ink); font: inherit; cursor: pointer; text-decoration: none;
}
.btn.secondary { background: var(--card); color: var(--brand); }
.btn.danger, button.danger { background: var(--bad); border-color: var(--bad); }
.btn.small { padding: .2rem .55rem; font-size: .85rem; }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; }
th, td { padding: .45rem .6rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: #f0f2f6; font-weight: 600; font-size: .85rem; white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.flagged td { background: var(--bad-bg); }
tfoot td { font-weight: 600; background: #f7f8fa; }

.badge { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .8rem; background: var(--info-bg); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }

form.inline { display: flex; flex-wrap: wrap; gap: .5rem .75rem; align-items: flex-end; margin-bottom: 1rem; }
form.inline label { display: flex; flex-direction: column; font-size: .85rem; color: var(--muted); }
input, select, textarea { font: inherit; padding: .35rem .5rem; border: 1px solid #c3cad6; border-radius: 6px; background: #fff; max-width: 100%; }
textarea { width: 100%; }
.form-grid { display: grid; gap: .75rem 1rem; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.form-grid label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .15rem; }
.form-grid input, .form-grid select { width: 100%; }
.errorlist { color: var(--bad); list-style: none; padding: 0; margin: .2rem 0 0; font-size: .85rem; }
.has-error input { border-color: var(--bad); background: var(--bad-bg); }

/* Attendance status pickers: radio inputs styled as a segmented control. */
.status-picker { display: flex; flex-wrap: wrap; gap: .25rem; }
.status-picker label {
  padding: .25rem .6rem; border: 1px solid var(--line); border-radius: 6px; font-size: .85rem;
  cursor: pointer; user-select: none; background: var(--card);
}
.status-picker input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.status-picker label:has(input:focus-visible) { outline: 2px solid var(--brand); }
.status-picker label:has(input[value=P]:checked) { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.status-picker label:has(input[value=A]:checked) { background: var(--bad); border-color: var(--bad); color: #fff; }
.status-picker label:has(input[value=L]:checked) { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.status-picker label:has(input[value=E]:checked) { background: var(--info-bg); border-color: var(--brand); color: var(--brand); }
.status-picker.readonly label { cursor: default; opacity: .8; }
tr:has(input[value=A]:checked) td { background: #fff6f5; }

.marks-input { width: 5.5rem; text-align: right; }
.sticky-actions { position: sticky; bottom: 0; background: var(--bg); padding: .75rem 0; display: flex; gap: .75rem; align-items: center; }

.register th, .register td { padding: .25rem .3rem; text-align: center; font-size: .8rem; }
.register td.name, .register th.name { text-align: left; white-space: nowrap; }
.register .A { color: var(--bad); font-weight: 700; }
.register .L { color: var(--warn); }
.register .E { color: var(--brand); }
.register .off { background: #f3f4f6; }

.report-card { max-width: 820px; margin: 0 auto; }
.report-card header { text-align: center; border-bottom: 2px solid var(--ink); padding-bottom: .5rem; margin-bottom: 1rem; }
.report-card .meta { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .25rem 1rem; margin-bottom: 1rem; }
.signatures { display: flex; justify-content: space-between; margin-top: 3rem; }
.signatures div { border-top: 1px solid var(--ink); padding-top: .25rem; min-width: 180px; text-align: center; }

.login { max-width: 360px; margin: 4rem auto; }
.login input { width: 100%; }
.login p { margin: 0 0 .75rem; }

@media (max-width: 600px) {
  main { padding: 1rem .75rem 3rem; }
  th, td { padding: .35rem .4rem; }
}

@media print {
  @page { size: A4; margin: 12mm; }
  body { background: #fff; font-size: 11pt; }
  .topbar, .subnav, .no-print, .messages, form.inline, .sticky-actions { display: none !important; }
  main { max-width: none; padding: 0; }
  .card, .table-wrap { border: 0; padding: 0; overflow: visible; }
  th { background: #eee !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  tr.flagged td { background: #fbe9e7 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  a { color: inherit; text-decoration: none; }
  .register { font-size: 7.5pt; }
  .register-page { page: landscape; }
  tr { page-break-inside: avoid; }
}
@page landscape { size: A4 landscape; }