:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #16202f;
  --muted: #6a778b;
  --line: #e2e7f0;
  --brand: #3d4fd6;
  --brand-dark: #2f3eb0;
  --ok: #12855a;
  --warn: #b45309;
  --danger: #c62b32;
  --danger-bg: #fdeced;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); min-height: 18px; font-size: 13px; }
h1, h2 { margin: 0 0 12px; }
h2 { font-size: 17px; }
code { background: #eef1f8; padding: 1px 5px; border-radius: 4px; font-size: 12px; }

/* layout ------------------------------------------------------------------ */
.row { display: flex; align-items: flex-start; }
.row.center { align-items: center; }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }
.gap { gap: 10px; }
.grow { flex: 1; min-width: 160px; }
.stack { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }

.view { max-width: 1120px; margin: 20px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 1px 2px rgba(20, 30, 60, .04);
}

.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .3px; }
.inline { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }

/* controls ---------------------------------------------------------------- */
input, select, button {
  font: inherit;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
button { cursor: pointer; background: #fff; transition: background .12s, border-color .12s; }
button:hover { background: #f1f4fb; }
button.primary { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
button.primary:hover { background: var(--brand-dark); }
button.ghost { border-color: transparent; color: var(--muted); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.link { border: none; background: none; color: var(--brand); padding: 2px 4px; text-decoration: underline; }

/* topbar ------------------------------------------------------------------ */
.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 10px 18px; position: sticky; top: 0; z-index: 5;
}
.brand { font-size: 15px; }
.tabs { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.tab { border: none; background: none; color: var(--muted); font-weight: 600; border-radius: 8px; }
.tab:hover { background: #f1f4fb; }
.tab.active { background: #eaedfc; color: var(--brand); }

/* login ------------------------------------------------------------------- */
.login-screen { min-height: 100vh; display: grid; place-items: center; }
.login-card {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 30px; width: min(360px, 92vw);
  display: flex; flex-direction: column; gap: 10px;
  box-shadow: 0 12px 40px rgba(30, 40, 90, .10);
}
.login-card h1 { font-size: 20px; margin: 0; }
.login-card p { margin: 0; }

/* absent chips ------------------------------------------------------------ */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff4e6; border: 1px solid #f5d7ab; color: #8a5200;
  border-radius: 999px; padding: 5px 8px 5px 12px; font-size: 13px;
}
.chip button { border: none; background: none; padding: 0 4px; color: #8a5200; font-size: 15px; line-height: 1; }
.chip .sub-note { color: #a97b34; font-size: 12px; }
.periods-picker { margin-top: 10px; font-size: 13px; color: var(--muted); }
.periods-picker summary { cursor: pointer; }
.periods-picker .row { margin-top: 8px; }

/* tables ------------------------------------------------------------------ */
table { border-collapse: collapse; width: 100%; margin-top: 8px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .3px; color: var(--muted); background: #fafbfe; }
tbody tr:hover { background: #fafbff; }
td.period-cell { font-weight: 700; width: 60px; }
tr.gap-row td { background: #fff6f6; }
tr.gap-row .sub-cell { color: var(--danger); font-weight: 600; }
.locked-badge { font-size: 11px; color: var(--brand); background: #eaedfc; padding: 1px 6px; border-radius: 999px; margin-left: 6px; }
.tag { font-size: 11px; color: var(--muted); }

.summary { display: flex; gap: 10px; flex-wrap: wrap; margin: 6px 0 4px; }
.pill { background: #eef1f8; border-radius: 999px; padding: 4px 12px; font-size: 13px; }
.pill.ok { background: #e4f6ed; color: var(--ok); }
.pill.bad { background: var(--danger-bg); color: var(--danger); }

.empty { padding: 26px; text-align: center; color: var(--muted); }

/* duty slips -------------------------------------------------------------- */
.duties { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; margin-top: 18px; }
.duty {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: #fbfcff;
}
.duty h4 { margin: 0 0 4px; font-size: 14px; }
.duty ul { margin: 4px 0 8px; padding-left: 18px; font-size: 13px; }
.duty .row { gap: 6px; }
.duty a, .duty button { font-size: 12px; padding: 4px 8px; }
.duty a { text-decoration: none; color: var(--brand); border: 1px solid var(--line); border-radius: 8px; background: #fff; }

/* timetable grid ---------------------------------------------------------- */
.tt-grid { overflow-x: auto; }
.tt-grid table { min-width: 700px; }
.tt-grid td { font-size: 12px; }
.tt-cell strong { display: block; font-weight: 600; }

.danger-zone { border-color: #f3d3d5; }

.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: #16202f; color: #fff; padding: 10px 18px; border-radius: 999px;
  font-size: 14px; z-index: 50; box-shadow: 0 8px 24px rgba(0,0,0,.2);
}

.only-print { display: none; }
.nowrap { white-space: nowrap; }
.row.end { align-items: flex-end; }
.sub-options { margin-top: 10px; }
td.period-cell .tag { display: block; font-weight: 400; }

/* banners ----------------------------------------------------------------- */
.banner {
  border: 1px solid #cfd8ec; background: #eef2fc; color: #23324f;
  border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px;
}
.banner.warn { background: #fff6e6; border-color: #f0d5a8; color: #7a4d00; }
.banner.ok { background: #e6f7ee; border-color: #b6e3cb; color: #0d6b47; }
.banner ul { margin: 6px 0 0; padding-left: 20px; }

/* modal ------------------------------------------------------------------- */
.modal {
  position: fixed; inset: 0; background: rgba(18, 26, 45, .45);
  display: grid; place-items: center; z-index: 40; padding: 16px;
}
.modal-card {
  background: #fff; border-radius: 14px; padding: 20px;
  width: min(660px, 96vw); max-height: 88vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(15, 25, 50, .3);
}
.modal-card h3 { margin: 16px 0 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); }

.cand { border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; margin-bottom: 8px; }
.cand.picked { border-color: #9fd8bd; background: #f2fbf7; }
.cand ul { margin: 6px 0 0; padding-left: 18px; font-size: 13px; }
.cand li { margin: 2px 0; }
.score { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--warn); }
.score.good { color: var(--ok); }
.pts { display: inline-block; min-width: 38px; font-weight: 700; font-variant-numeric: tabular-nums; }
.pts.good { color: var(--ok); }
.pts.bad { color: var(--warn); }

/* stats ------------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 10px 0 4px; }
.stat { background: #f7f9fe; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.stat strong { display: block; font-size: 24px; line-height: 1.1; }
.stat span { font-size: 12px; color: var(--muted); }
.stat.good strong { color: var(--ok); }
.stat.warn strong { color: var(--warn); }
.stat.bad strong { color: var(--danger); }

.report-lists, .two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 16px; }
table.compact th, table.compact td { padding: 5px 8px; font-size: 13px; }
.bar { background: #eaedfc; border-radius: 6px; height: 10px; min-width: 2px; }

.chip-green { background: #e6f7ee; border-color: #b6e3cb; color: #0d6b47; }
.chip-grey { background: #f1f3f8; border-color: var(--line); color: var(--muted); }

.filebtn {
  display: inline-block; padding: 8px 11px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; cursor: pointer; font-size: 15px;
}
.filebtn:hover { background: #f1f4fb; }

.toast.warn { background: #7a3d00; }

/* roles, badges, statuses -------------------------------------------------- */
.role-badge {
  display: inline-block; font-size: 11px; text-transform: uppercase; letter-spacing: .5px;
  padding: 2px 8px; border-radius: 999px; background: #eef1f8; color: var(--muted); font-weight: 700;
}
.role-principal { background: #ede8fd; color: #5b3fc4; }
.role-office { background: #e3f0fd; color: #1f5f9e; }
.role-teacher { background: #e6f7ee; color: #0d6b47; }

.badge {
  display: inline-block; min-width: 18px; padding: 0 5px; margin-left: 4px;
  background: var(--danger); color: #fff; border-radius: 999px;
  font-size: 11px; font-weight: 700; text-align: center;
}

.status {
  display: inline-block; font-size: 12px; font-weight: 600; text-transform: capitalize;
  padding: 2px 9px; border-radius: 999px; background: #eef1f8; color: var(--muted);
}
.status.pending { background: #fff4e6; color: #8a5200; }
.status.approved, .status.present { background: #e6f7ee; color: #0d6b47; }
.status.rejected, .status.absent { background: var(--danger-bg); color: var(--danger); }
.status.cancelled, .status.notmarked { background: #f1f3f8; color: var(--muted); }
.status.late { background: #fff4e6; color: #b45309; }
.status.leave, .status.partdayleave { background: #ede8fd; color: #5b3fc4; }

.text-bad { color: var(--danger); }

button.mini { padding: 4px 10px; font-size: 13px; }
button.mini.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
button.mini.bad { background: var(--danger); border-color: var(--danger); color: #fff; }

.bar-good { background: #b6e3cb; }
.bar-warn { background: #f5d7ab; }
.bar-bad { background: #f3c2c5; }

/* homework load ------------------------------------------------------------ */
.bar-track { background: #eaedfc; border-radius: 6px; height: 10px; overflow: hidden; margin: 10px 0 6px; }
.bar-track .bar { height: 10px; border-radius: 6px; }
.pill.warn { background: #fdf1de; color: #9a6412; }

/* lost period ledger -------------------------------------------------------- */
.card-inset { background: #fbfcff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 10px 0; }

/* emergency roll call ------------------------------------------------------- */
.drill-banner {
  position: sticky; top: 0; z-index: 50; cursor: pointer;
  background: var(--danger); color: #fff; text-align: center;
  padding: 10px 16px; font-size: 15px;
  animation: drill-pulse 1.6s ease-in-out infinite;
}
@keyframes drill-pulse { 50% { filter: brightness(1.18); } }
.drill-btn { font-size: 17px; padding: 16px 22px; font-weight: 600; }
.drill-marklist { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.drill-row {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px;
}
.drill-row.is-present { background: #e4f6ed; border-color: #b6e3cb; }
.drill-row.is-missing { background: var(--danger-bg); border-color: #f3c2c5; }
/* Undecided buttons stay pale until tapped — a room mid-count reads at a glance. */
.drill-row .mini.ok:not(.on) { background: #fff; color: var(--ok); }
.drill-row .mini.bad:not(.on) { background: #fff; color: var(--danger); }
.drill-row .mini { min-width: 76px; }

/* circulars ---------------------------------------------------------------- */
.circular {
  border: 1px solid var(--line); border-left: 4px solid var(--line);
  border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; background: #fff;
}
.circular.unread { border-left-color: var(--brand); background: #fbfcff; }
.circular h3 { margin: 0; font-size: 15px; }
.circ-body { white-space: pre-wrap; margin: 8px 0; }

textarea {
  font: inherit; padding: 8px 11px; border: 1px solid var(--line);
  border-radius: 8px; width: 100%; resize: vertical;
}

.demo-hint { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 4px !important; line-height: 1.6; }

/* the nav gets long once every register is in the app ---------------------- */
.tabs .tab { padding: 7px 10px; font-size: 14px; }
@media (max-width: 1100px) { .tabs .tab { padding: 6px 8px; font-size: 13px; } }

/* print — this is the sheet that goes on the staff room notice board ------- */
@media print {
  body { background: #fff; }
  .no-print, .topbar, .toast, .modal, .banner { display: none !important; }
  .view { margin: 0; padding: 0; max-width: none; }
  .card { border: none; box-shadow: none; padding: 0; margin: 0; }
  .only-print { display: block; }
  .print-head { text-align: center; margin-bottom: 10px; }
  .print-head h1 { font-size: 20px; margin: 0; }
  .print-head p { margin: 2px 0 0; font-size: 13px; }
  table { font-size: 12px; }
  th { background: #eee !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  th, td { border: 1px solid #999; padding: 5px 7px; }
  tr.gap-row td { background: #fbe9e9 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .summary { margin-bottom: 8px; }
  .pill { border: 1px solid #999; background: none !important; }
  @page { margin: 12mm; }
}

@media (max-width: 640px) {
  .topbar { padding: 8px 12px; }
  .tabs { margin-left: 0; width: 100%; }
  .view { padding: 0 10px; }
  th, td { padding: 7px 6px; font-size: 13px; }
}