:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page-plane: #f4f7fc;
  --sidebar-bg: #cde2fb;
  --sidebar-bg-2: #b7d3f6;
  --sidebar-active: #2a78d6;
  --sidebar-ink: #104281;
  --sidebar-ink-muted: #1c5cab;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --border: rgba(11,11,11,0.10);
  --gridline: #e1e0d9;
  --blue: #2a78d6;
  --blue-dark: #104281;
  --series-1: #2a78d6; --series-2: #008300; --series-3: #e87ba4; --series-4: #eda100;
  --series-5: #1baf7a; --series-6: #eb6834; --series-7: #4a3aa7; --series-8: #e34948;
  --status-good: #0ca30c; --status-warning: #fab219; --status-serious: #ec835a; --status-critical: #d03b3b;
  --status-excused: #104281; --status-excused-bg: #9ec5f4;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--page-plane); color: var(--text-primary); }
a { color: var(--blue); }
.app { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }

/* Sidebar */
.sidebar { background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-2) 100%); padding: 20px 14px; display: flex; flex-direction: column; gap: 18px; border-right: 1px solid var(--border); position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 12px; border-bottom: 1px solid rgba(16,66,129,0.15); text-decoration: none; }
.brand-mark { width: 34px; height: 34px; border-radius: 9px; background: var(--sidebar-active); color: #fff; font-weight: 700; font-size: 15px; display: flex; align-items: center; justify-content: center; flex: none; }
.brand-text { line-height: 1.15; }
.brand-text strong { display: block; color: var(--sidebar-ink); font-size: 17px; }
.brand-text span { display: block; color: var(--sidebar-ink-muted); font-size: 11px; }

nav.navlist { display: flex; flex-direction: column; gap: 3px; }
nav.navlist a { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; background: transparent; color: var(--sidebar-ink); font-size: 13.5px; font-weight: 500; text-decoration: none; }
nav.navlist a .ic { width: 18px; text-align: center; font-size: 15px; flex: none; }
nav.navlist a:hover { background: rgba(255,255,255,0.5); }
nav.navlist a.active { background: var(--sidebar-active); color: #fff; font-weight: 600; }

.sidebar-footer { margin-top: auto; padding: 10px 8px 0; border-top: 1px solid rgba(16,66,129,0.15); }
.sidebar-footer .user { display:flex; align-items:center; gap:8px; }
.sidebar-footer .avatar { width: 30px; height:30px; border-radius: 50%; background: var(--sidebar-ink); color:#fff; display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:700; flex: none; }
.sidebar-footer .who { line-height:1.2; flex: 1; min-width: 0; }
.sidebar-footer .who strong { display:block; font-size: 12.5px; color: var(--sidebar-ink); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sidebar-footer .who span { display:block; font-size: 10.5px; color: var(--sidebar-ink-muted); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sidebar-footer .logout { display:block; margin-top:10px; font-size:12px; color: var(--sidebar-ink-muted); text-decoration:none; font-weight:600; }
.sidebar-footer .logout:hover { color: var(--status-critical); }

/* Main */
main { padding: 26px 34px 60px; max-width: 1180px; }
.topbar { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; flex-wrap: wrap; gap: 10px; }
.topbar h1 { font-size: 22px; margin: 0 0 4px; color: var(--text-primary); }
.topbar p { margin: 0; color: var(--text-secondary); font-size: 13.5px; }
.todaychip { background: #fff; border: 1px solid var(--border); border-radius: 20px; padding: 6px 14px; font-size: 12.5px; color: var(--text-secondary); box-shadow: 0 1px 2px rgba(0,0,0,0.03); }

.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: 0 1px 3px rgba(11,11,11,0.04); }
.grid { display: grid; gap: 16px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: 1.3fr 1fr; }
.grid.cols-2-eq { grid-template-columns: 1fr 1fr; }
@media (max-width: 980px) { .grid.cols-4 { grid-template-columns: repeat(2,1fr); } .grid.cols-2, .grid.cols-2-eq { grid-template-columns: 1fr; } }

.section { margin-bottom: 24px; }
.section-title { font-size: 14px; font-weight: 700; color: var(--text-primary); margin: 0 0 12px; display:flex; align-items:center; justify-content:space-between; }
.section-title .sub { font-weight: 400; color: var(--text-muted); font-size: 12px; }

.stat-tile .label { font-size: 12px; color: var(--text-secondary); font-weight: 600; margin-bottom: 6px; }
.stat-tile .value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text-primary); }
.stat-tile .delta { font-size: 12px; margin-top: 4px; font-weight: 600; }
.delta.up { color: var(--status-good); } .delta.down { color: var(--status-critical); } .delta.flat { color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .03em; color: var(--text-muted); font-weight: 700; padding: 8px 10px; border-bottom: 1px solid var(--gridline); }
tbody td { padding: 9px 10px; border-bottom: 1px solid var(--gridline); color: var(--text-primary); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f9fbff; }

.badge { display: inline-flex; align-items:center; gap:5px; padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 700; }
.badge.good { background: rgba(12,163,12,0.12); color: #006300; }
.badge.warning { background: rgba(250,178,25,0.20); color: #7a5200; }
.badge.critical { background: rgba(208,59,59,0.12); color: var(--status-critical); }
.badge.excused { background: var(--status-excused-bg); color: var(--status-excused); }

.statuspicker { display: flex; gap: 6px; flex-wrap: wrap; }
.statuspicker label { border: 1px solid var(--border); background: #fff; border-radius: 7px; padding: 5px 10px; font-size: 12px; font-weight: 600; color: var(--text-secondary); cursor: pointer; display:inline-block; }
.statuspicker input { position:absolute; opacity:0; pointer-events:none; }
.statuspicker input:checked + label.sel-good { background: var(--status-good); color: #fff; border-color: var(--status-good); }
.statuspicker input:checked + label.sel-critical { background: var(--status-critical); color: #fff; border-color: var(--status-critical); }
.statuspicker input:checked + label.sel-warning { background: var(--status-warning); color: #4a3400; border-color: var(--status-warning); }
.statuspicker input:checked + label.sel-excused { background: var(--status-excused-bg); color: var(--status-excused); border-color: var(--status-excused); }

.toolbar { display:flex; gap: 10px; align-items:center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar select, .toolbar input[type=date], .toolbar input[type=text] { padding: 7px 10px; border-radius: 7px; border: 1px solid var(--border); font-size: 13px; color: var(--text-primary); background:#fff; }
.toolbar label { font-size: 12px; color: var(--text-secondary); font-weight: 600; margin-right: 4px; }

.btn { padding: 8px 16px; border-radius: 7px; border: none; background: var(--blue); color: #fff; font-size: 13px; font-weight: 700; cursor: pointer; text-decoration:none; display:inline-block; }
.btn:hover { background: var(--blue-dark); }
.btn.ghost { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn.danger { background: #fff; color: var(--status-critical); border: 1px solid var(--status-critical); }
.btn.danger:hover { background: var(--status-critical); color:#fff; }
.btn.small { padding: 5px 11px; font-size: 12px; }

.legend-row { display:flex; gap: 16px; align-items:center; margin-bottom: 6px; flex-wrap: wrap; }
.legend-item { display:flex; align-items:center; gap:6px; font-size: 12px; color: var(--text-secondary); }
.legend-swatch { width: 10px; height: 10px; border-radius: 3px; flex: none; }

.empty-note { color: var(--text-muted); font-size: 13px; padding: 20px 0; text-align:center; }
.callout { border-left: 3px solid var(--status-critical); background: rgba(208,59,59,0.06); border-radius: 0 8px 8px 0; padding: 10px 14px; font-size: 12.5px; color: var(--text-primary); margin-bottom: 14px; }
.callout strong { color: var(--status-critical); }
.callout.info { border-left-color: var(--blue); background: rgba(42,120,214,0.06); }
.callout.info strong { color: var(--blue-dark); }

/* Forms (login, CRUD) */
.formgrid { display:grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.formgrid.single { grid-template-columns: 1fr; }
@media (max-width: 700px) { .formgrid { grid-template-columns: 1fr; } }
.field { display:flex; flex-direction:column; gap: 5px; }
.field label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.field input, .field select, .field textarea { padding: 9px 11px; border-radius: 7px; border: 1px solid var(--border); font-size: 13.5px; font-family: inherit; background: #fff; color: var(--text-primary); }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
.form-actions { margin-top: 16px; display:flex; gap: 10px; }

.alert { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; }
.alert.success { background: rgba(12,163,12,0.10); color: #006300; border: 1px solid rgba(12,163,12,0.25); }
.alert.error { background: rgba(208,59,59,0.08); color: var(--status-critical); border: 1px solid rgba(208,59,59,0.25); }

/* Login page */
.login-wrap { min-height: 100vh; display:flex; align-items:center; justify-content:center; background: linear-gradient(160deg, var(--sidebar-bg) 0%, var(--page-plane) 55%); }
.login-card { background:#fff; border-radius: 16px; padding: 40px 40px 32px; width: 380px; box-shadow: 0 10px 40px rgba(16,66,129,0.12); border: 1px solid var(--border); }
.login-card .brand { border-bottom:none; padding: 0 0 22px; justify-content:center; }
.login-card .brand-text strong { font-size: 22px; }
.login-card h2 { font-size: 15px; text-align:center; color: var(--text-secondary); font-weight: 500; margin: 0 0 22px; }
.login-card .btn { width: 100%; padding: 11px; font-size: 14px; margin-top: 6px; }
.login-hint { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--gridline); font-size: 11.5px; color: var(--text-muted); line-height:1.6; }

/* Charts (hand-built SVG) */
.chartbox { position: relative; width: 100%; }
.viz-svg { display: block; overflow: visible; }
.axis-label { font-size: 9.5px; fill: var(--text-muted); font-family: system-ui, -apple-system, sans-serif; }
.bar-value { font-size: 10.5px; font-weight: 700; fill: var(--text-secondary); font-family: system-ui, -apple-system, sans-serif; font-variant-numeric: tabular-nums; }
.point-dot { pointer-events: none; }
.hover-target { cursor: pointer; }
.bar-group { cursor: pointer; }
.bar-group:hover .bar-rect { opacity: 0.82; }
.bar-rect { transition: opacity .12s; }
.viz-tooltip { position: absolute; display: none; pointer-events: none; z-index: 20; background: #0b0b0b; color: #fff; font-size: 11.5px; line-height: 1.5; padding: 7px 10px; border-radius: 6px; white-space: nowrap; box-shadow: 0 4px 12px rgba(0,0,0,0.18); }

.chip-list { display:flex; flex-wrap:wrap; gap:6px; }
.chip { background: var(--status-excused-bg); color: var(--status-excused); font-size: 11.5px; font-weight:600; padding: 3px 9px; border-radius: 20px; }