:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #eef3f8;
  --text: #152333;
  --muted: #6d7b8a;
  --border: #dce5ee;
  --primary: #0f4c81;
  --primary-2: #1769a8;
  --success: #18794e;
  --success-bg: #e8f6ef;
  --warning: #9a6700;
  --warning-bg: #fff7d6;
  --danger: #b42318;
  --danger-bg: #feeceb;
  --neutral-bg: #eef1f4;
  --shadow: 0 18px 55px rgba(26, 48, 74, .09);
  --radius: 18px;
}

[data-theme="dark"] {
  --bg: #0d1520;
  --surface: #131f2c;
  --surface-2: #192737;
  --text: #eff6ff;
  --muted: #a7b6c6;
  --border: #26384b;
  --primary: #4aa3df;
  --primary-2: #6cb7e8;
  --success-bg: #123729;
  --warning-bg: #3a3012;
  --danger-bg: #3e1d1b;
  --neutral-bg: #223040;
  --shadow: 0 18px 55px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; font-family: Inter, system-ui, sans-serif; background: var(--bg); color: var(--text); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: .84rem; }
.eyebrow { margin: 0 0 5px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-size: .72rem; font-weight: 800; }
h1,h2,h3,p { margin-top: 0; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); margin-bottom: 14px; }
h2 { margin-bottom: 0; font-size: 1.65rem; }
h3 { margin-bottom: 0; font-size: 1.18rem; }

.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 28px; background: radial-gradient(circle at top right, rgba(74,163,223,.22), transparent 40%), var(--bg); }
.login-card { width: min(560px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 28px; padding: 48px; box-shadow: var(--shadow); text-align: center; }
.brand-mark { width: 78px; height: 78px; display: grid; place-items: center; margin: 0 auto 24px; border-radius: 24px; background: linear-gradient(145deg, var(--primary), var(--primary-2)); color: white; font-weight: 800; letter-spacing: .05em; font-size: 1.3rem; }
.brand-mark.small { width: 42px; height: 42px; margin: 0; border-radius: 13px; font-size: .82rem; }
.login-note { margin: 18px 0 0; color: var(--muted); font-size: .82rem; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 260px 1fr; }
.sidebar { position: sticky; top: 0; height: 100vh; background: #0d3b63; color: white; padding: 22px 16px; display: flex; flex-direction: column; z-index: 20; }
[data-theme="dark"] .sidebar { background: #09111a; }
.sidebar-brand { display: flex; align-items: center; gap: 12px; padding: 0 8px 24px; }
.sidebar-brand strong { display: block; font-size: .95rem; }
.sidebar-brand span { display: block; opacity: .72; font-size: .76rem; margin-top: 3px; }
.nav-list { display: grid; gap: 6px; }
.nav-item { border: 0; background: transparent; color: rgba(255,255,255,.78); padding: 12px 14px; border-radius: 12px; text-align: left; font-weight: 700; }
.nav-item:hover, .nav-item.active { background: rgba(255,255,255,.12); color: white; }
.sidebar-footer { margin-top: auto; display: grid; gap: 8px; }
.sidebar .btn-ghost { color: white; border-color: rgba(255,255,255,.18); }

.main { min-width: 0; padding: 28px; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 26px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.user-chip { display: flex; align-items: center; gap: 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px 6px 7px; }
.user-chip > span { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-2); font-weight: 800; }
.user-chip strong, .user-chip small { display: block; line-height: 1.15; }
.user-chip strong { font-size: .82rem; }
.user-chip small { color: var(--muted); font-size: .7rem; margin-top: 3px; }

.btn { border: 1px solid transparent; border-radius: 12px; padding: 10px 14px; font-weight: 750; transition: .18s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: white; box-shadow: 0 7px 18px rgba(15,76,129,.18); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: transparent; }
.btn-success { background: var(--success-bg); color: var(--success); }
.btn-lg { padding: 14px 18px; width: 100%; margin-top: 12px; }
.btn-block { width: 100%; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 11px; font-size: 1.1rem; }

.view { display: none; }
.active-view { display: block; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stat-card span, .stat-card small { color: var(--muted); display: block; }
.stat-card span { font-size: .78rem; font-weight: 700; }
.stat-card strong { display: block; font-size: 2rem; margin: 8px 0 3px; }
.stat-card.warning { background: var(--warning-bg); }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.panel + .panel { margin-top: 18px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.segmented { background: var(--surface-2); padding: 4px; border-radius: 11px; display: flex; gap: 4px; }
.segmented button { border: 0; background: transparent; color: var(--muted); padding: 8px 10px; border-radius: 8px; font-weight: 700; font-size: .78rem; }
.segmented button.active { background: var(--surface); color: var(--text); box-shadow: 0 2px 9px rgba(0,0,0,.05); }

.assignment-list { display: grid; gap: 10px; }
.assignment-card { display: grid; grid-template-columns: 110px minmax(0, 1fr) 170px 130px; gap: 16px; align-items: center; border: 1px solid var(--border); border-radius: 15px; padding: 14px 16px; background: var(--surface); }
.assignment-card:hover { border-color: var(--primary); }
.date-block strong, .date-block span { display: block; }
.date-block strong { font-size: .88rem; }
.date-block span { color: var(--muted); font-size: .75rem; margin-top: 3px; }
.assignment-main strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.assignment-main span { display: block; color: var(--muted); font-size: .78rem; margin-top: 4px; }
.substitute-name { font-weight: 700; }
.status-pill { justify-self: end; border-radius: 999px; padding: 7px 10px; font-size: .72rem; font-weight: 800; white-space: nowrap; }
.status-pending { background: var(--warning-bg); color: var(--warning); }
.status-confirmed { background: var(--success-bg); color: var(--success); }
.status-declined { background: var(--danger-bg); color: var(--danger); }
.status-cancelled { background: var(--neutral-bg); color: var(--muted); }
.empty { text-align: center; padding: 44px 20px; color: var(--muted); border: 1px dashed var(--border); border-radius: 14px; }

.calendar-head { justify-content: center; }
.calendar-head h3 { min-width: 220px; text-align: center; }
.calendar-weekdays, .calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); }
.calendar-weekdays span { text-align: center; color: var(--muted); font-weight: 800; font-size: .73rem; padding: 10px 0; }
.calendar-cell { min-height: 120px; border-top: 1px solid var(--border); border-left: 1px solid var(--border); padding: 8px; overflow: hidden; }
.calendar-cell:nth-child(7n) { border-right: 1px solid var(--border); }
.calendar-grid .calendar-cell:nth-last-child(-n+7) { border-bottom: 1px solid var(--border); }
.calendar-cell.outside { opacity: .38; }
.calendar-cell.today { background: color-mix(in srgb, var(--primary) 7%, var(--surface)); }
.day-num { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; font-size: .78rem; font-weight: 800; }
.calendar-cell.today .day-num { background: var(--primary); color: white; }
.calendar-event { margin-top: 5px; border-radius: 8px; padding: 5px 7px; background: var(--surface-2); font-size: .68rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.calendar-event.pending { background: var(--warning-bg); color: var(--warning); }
.calendar-event.confirmed { background: var(--success-bg); color: var(--success); }
.calendar-event.declined { background: var(--danger-bg); color: var(--danger); }
.calendar-event.cancelled { color: var(--muted); text-decoration: line-through; }

.filters-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin-bottom: 18px; }
.filters-grid.compact { grid-template-columns: repeat(2, minmax(180px, 260px)); }
label { display: grid; gap: 6px; font-size: .78rem; font-weight: 750; color: var(--muted); }
input, select, textarea { width: 100%; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 11px; padding: 10px 11px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent); }
.align-end { align-self: end; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: left; font-size: .82rem; }
th { color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .07em; }

.admin-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.admin-grid .panel + .panel { margin-top: 0; }
.form-grid { display: grid; gap: 13px; }
.form-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.span-2 { grid-column: 1 / -1; }
.inline-form { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-bottom: 12px; }
.admin-list { display: grid; gap: 8px; }
.admin-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 11px; }
.admin-row .meta { min-width: 0; }
.admin-row .meta strong, .admin-row .meta small { display: block; }
.admin-row .meta small { color: var(--muted); margin-top: 3px; overflow: hidden; text-overflow: ellipsis; }
.admin-row .controls { display: flex; gap: 6px; align-items: center; }
.admin-row select { width: auto; max-width: 150px; }

.dialog { width: min(720px, calc(100vw - 28px)); border: 1px solid var(--border); border-radius: 20px; background: var(--surface); color: var(--text); box-shadow: 0 28px 90px rgba(0,0,0,.25); padding: 0; }
.dialog::backdrop { background: rgba(3, 13, 24, .58); backdrop-filter: blur(4px); }
.dialog form, .dialog > div { padding: 22px; }
.dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.form-help { margin-top: 14px; background: var(--surface-2); border-radius: 12px; padding: 11px 12px; color: var(--muted); font-size: .78rem; line-height: 1.5; }
.hours-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.small-dialog { width: min(520px, calc(100vw - 28px)); }
.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 16px 0; }
.detail-item { background: var(--surface-2); border-radius: 12px; padding: 10px; }
.detail-item span { display: block; color: var(--muted); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 800; }
.detail-item strong { display: block; margin-top: 4px; font-size: .9rem; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

.toast { position: fixed; right: 22px; bottom: 22px; z-index: 100; max-width: 360px; background: #101c29; color: white; border-radius: 12px; padding: 12px 15px; box-shadow: var(--shadow); opacity: 0; transform: translateY(12px); pointer-events: none; transition: .2s; }
.toast.show { opacity: 1; transform: translateY(0); }
.mobile-only { display: none; }

@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .filters-grid { grid-template-columns: repeat(3, 1fr); }
  .assignment-card { grid-template-columns: 95px 1fr 130px; }
  .status-pill { grid-column: 3; grid-row: 1; }
  .substitute-name { grid-column: 3; grid-row: 2; justify-self: end; }
}

@media (max-width: 840px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: -280px; width: 260px; transition: .2s; box-shadow: 16px 0 45px rgba(0,0,0,.2); }
  .sidebar.open { left: 0; }
  .mobile-only { display: grid; }
  .main { padding: 18px; }
  .topbar { align-items: flex-start; }
  .topbar-actions .user-chip { display: none; }
  .admin-grid { grid-template-columns: 1fr; }
  .filters-grid { grid-template-columns: repeat(2, 1fr); }
  .calendar-cell { min-height: 95px; padding: 5px; }
  .calendar-event { font-size: .62rem; padding: 4px; }
}

@media (max-width: 620px) {
  .login-card { padding: 30px 20px; }
  .main { padding: 14px; }
  .topbar { flex-wrap: wrap; }
  .topbar-actions { width: 100%; }
  .topbar-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 15px; }
  .stat-card strong { font-size: 1.6rem; }
  .panel { padding: 14px; border-radius: 15px; }
  .panel-head { align-items: flex-start; flex-direction: column; }
  .segmented { width: 100%; overflow-x: auto; }
  .assignment-card { grid-template-columns: 1fr auto; gap: 7px 10px; }
  .date-block { grid-column: 1; }
  .assignment-main { grid-column: 1 / -1; grid-row: 2; }
  .substitute-name { grid-column: 1; grid-row: 3; justify-self: start; font-size: .78rem; }
  .status-pill { grid-column: 2; grid-row: 1; }
  .filters-grid, .filters-grid.compact, .form-grid.two-col { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .hours-fields { grid-template-columns: 1fr 1fr; }
  .calendar-weekdays span { font-size: .6rem; }
  .calendar-cell { min-height: 78px; }
  .calendar-event { max-width: 100%; }
  .detail-grid { grid-template-columns: 1fr 1fr; }
}

/* v0.1.4 — FTE/PTE classification + editable actual times */
.employment-fieldset { margin: 0; border: 1px solid var(--border); border-radius: 13px; padding: 12px; min-width: 0; }
.employment-fieldset legend { padding: 0 5px; color: var(--muted); font-size: .78rem; font-weight: 800; }
.employment-fieldset > p { margin: 9px 0 0; color: var(--muted); font-size: .76rem; line-height: 1.45; }
.required-mark { margin-left: 5px; color: var(--danger); font-size: .66rem; text-transform: uppercase; letter-spacing: .06em; }
.employment-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.employment-option { position: relative; display: block; cursor: pointer; color: var(--text); }
.employment-option input { position: absolute; opacity: 0; pointer-events: none; }
.employment-option span { display: block; border: 1px solid var(--border); border-radius: 11px; padding: 11px 12px; background: var(--surface); transition: .16s ease; }
.employment-option strong, .employment-option small { display: block; }
.employment-option strong { font-size: .9rem; }
.employment-option small { margin-top: 3px; color: var(--muted); font-size: .7rem; line-height: 1.25; }
.employment-option input:checked + span { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent); background: color-mix(in srgb, var(--primary) 6%, var(--surface)); }
.employment-option input:focus-visible + span { outline: 2px solid var(--primary); outline-offset: 2px; }
.field-note { margin: -3px 0 0; color: var(--muted); font-size: .75rem; line-height: 1.45; }
.classification-pill { display: inline-block; border-radius: 999px; padding: 4px 8px; background: var(--surface-2); color: var(--text); font-size: .68rem; font-weight: 800; }
.classification-pill.unclassified { background: var(--warning-bg); color: var(--warning); }

@media (max-width: 620px) {
  .employment-options { grid-template-columns: 1fr; }
}