/* ===== Design tokens ===== */
:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #1d4ed8;
  --primary-soft: #dbeafe;
  --sidebar: #0f1b33;
  --sidebar-text: #c7d2e6;
  --sidebar-active: #1d4ed8;
  --success: #15803d;
  --success-soft: #dcfce7;
  --warning: #b45309;
  --warning-soft: #fef3c7;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --info: #0e7490;
  --info-soft: #cffafe;
  --neutral-soft: #e2e8f0;
  --chart-1: #2563eb;
  --chart-2: #f59e0b;
  --chart-3: #10b981;
  --chart-4: #ef4444;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1220; --surface: #121a2b; --surface-2: #172036; --border: #24304a;
    --text: #e5ebf5; --muted: #8b9ab5; --primary: #60a5fa; --primary-soft: #1e3a6b;
    --sidebar: #080e1a; --sidebar-text: #a9b6cf; --sidebar-active: #2563eb;
    --success: #4ade80; --success-soft: #133524; --warning: #fbbf24; --warning-soft: #3b2c0b;
    --danger: #f87171; --danger-soft: #3d1717; --info: #22d3ee; --info-soft: #0f3340;
    --neutral-soft: #24304a;
    --chart-1: #60a5fa; --chart-2: #fbbf24; --chart-3: #34d399; --chart-4: #f87171;
    --shadow: 0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"] {
  --bg: #0b1220; --surface: #121a2b; --surface-2: #172036; --border: #24304a;
  --text: #e5ebf5; --muted: #8b9ab5; --primary: #60a5fa; --primary-soft: #1e3a6b;
  --sidebar: #080e1a; --sidebar-text: #a9b6cf; --sidebar-active: #2563eb;
  --success: #4ade80; --success-soft: #133524; --warning: #fbbf24; --warning-soft: #3b2c0b;
  --danger: #f87171; --danger-soft: #3d1717; --info: #22d3ee; --info-soft: #0f3340;
  --neutral-soft: #24304a;
  --chart-1: #60a5fa; --chart-2: #fbbf24; --chart-3: #34d399; --chart-4: #f87171;
  --shadow: 0 1px 2px rgba(0,0,0,.4);
}

/* ===== Base ===== */
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--text); font: 14px/1.45 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); }
h1, h2, h3 { margin: 0; line-height: 1.25; }
input, select, textarea, button { font: inherit; color: inherit; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.nowrap { white-space: nowrap; }
.strong { font-weight: 600; }
.pos { color: var(--success); }
.neg { color: var(--danger); }

/* ===== Layout ===== */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px; flex-shrink: 0; background: var(--sidebar); color: var(--sidebar-text);
  position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: 16px 12px;
}
.brand { display: flex; gap: 10px; align-items: center; padding: 4px 8px 18px; }
.brand-mark { width: 38px; height: 38px; border-radius: 9px; background: var(--sidebar-active); color: #fff; display: grid; place-items: center; flex-shrink: 0; }
.brand-name { color: #fff; font-weight: 700; font-size: 15px; }
.brand-sub { font-size: 11px; opacity: .7; }
.nav-group { font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; opacity: .55; padding: 14px 10px 6px; }
.nav-link {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px;
  color: var(--sidebar-text); text-decoration: none; font-weight: 500; margin-bottom: 2px;
}
.nav-link:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-link.active { background: var(--sidebar-active); color: #fff; }
.nav-link svg { flex-shrink: 0; opacity: .9; }
.nav-num { margin-left: auto; font-size: 10px; opacity: .5; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 12px; padding: 14px 24px; background: var(--surface);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
}
.topbar h1 { font-size: 19px; }
.topbar-right { margin-left: auto; }
.today { color: var(--muted); font-size: 13px; }
.menu-btn { display: none; }
.view { padding: 20px 24px 48px; max-width: 1400px; width: 100%; }
.scrim { display: none; }

/* ===== Components ===== */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-pad { padding: 16px; }
.card-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.card-head h2 { font-size: 15px; }
.card-head .spacer { flex: 1; }
.stack > * + * { margin-top: 16px; }
.grid { display: grid; gap: 16px; }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi-label { color: var(--muted); font-size: 12px; font-weight: 500; }
.kpi-value { font-size: 22px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi-sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; font-size: 12.5px; }
.chip b { font-variant-numeric: tabular-nums; }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar .spacer { flex: 1; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--border);
  background: var(--surface); padding: 7px 13px; border-radius: 8px; cursor: pointer; font-weight: 500; white-space: nowrap;
  text-decoration: none; color: var(--text);
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary); filter: brightness(1.08); }
.btn-danger { color: var(--danger); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: var(--success); filter: brightness(1.08); }
.btn-sm { padding: 4px 9px; font-size: 12.5px; border-radius: 7px; }
.icon-btn { background: none; border: 0; padding: 6px; border-radius: 8px; cursor: pointer; color: var(--text); display: inline-grid; place-items: center; }
.icon-btn:hover { background: var(--surface-2); }

.input, select.input, textarea.input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface);
  min-height: 36px;
}
.input:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.toolbar .input { width: auto; min-width: 150px; }
textarea.input { min-height: 70px; resize: vertical; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.b-success { background: var(--success-soft); color: var(--success); }
.b-warning { background: var(--warning-soft); color: var(--warning); }
.b-danger { background: var(--danger-soft); color: var(--danger); }
.b-info { background: var(--info-soft); color: var(--info); }
.b-primary { background: var(--primary-soft); color: var(--primary); }
.b-neutral { background: var(--neutral-soft); color: var(--muted); }

/* Tables */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 9px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.table th { font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; background: var(--surface-2); white-space: nowrap; }
.table tbody tr:hover { background: var(--surface-2); }
.table tfoot td { font-weight: 700; background: var(--surface-2); }
.table .actions { white-space: nowrap; text-align: right; }
.empty { padding: 36px 16px; text-align: center; color: var(--muted); }

/* Attendance register */
.reg th, .reg td { padding: 5px 4px; text-align: center; font-size: 12px; }
.reg td.name, .reg th.name { text-align: left; padding-left: 10px; position: sticky; left: 0; background: var(--surface); z-index: 1; white-space: nowrap; }
.reg th.name { background: var(--surface-2); }
.att { display: inline-grid; place-items: center; width: 26px; height: 24px; border-radius: 5px; font-weight: 700; font-size: 11px; cursor: pointer; border: 0; }
.att-P { background: var(--success-soft); color: var(--success); }
.att-A { background: var(--danger-soft); color: var(--danger); }
.att-H { background: var(--warning-soft); color: var(--warning); }
.att-L { background: var(--info-soft); color: var(--info); }
.att-WO { background: var(--neutral-soft); color: var(--muted); }
.att-none { background: transparent; color: var(--border); border: 1px dashed var(--border); }
.reg th.wk { color: var(--danger); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; background: var(--surface); padding: 6px 11px; cursor: pointer; font-weight: 600; font-size: 12.5px; border-left: 1px solid var(--border); }
.seg button:first-child { border-left: 0; }
.seg button.on-P { background: var(--success); color: #fff; }
.seg button.on-A { background: var(--danger); color: #fff; }
.seg button.on-H { background: var(--warning); color: #fff; }
.seg button.on-L { background: var(--info); color: #fff; }
.seg button.on-WO { background: var(--muted); color: #fff; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab { padding: 10px 14px; border: 0; background: none; cursor: pointer; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* Alerts list */
.alert-item { display: flex; gap: 10px; align-items: flex-start; padding: 10px 16px; border-bottom: 1px solid var(--border); }
.alert-item:last-child { border-bottom: 0; }
.dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 6px; flex-shrink: 0; }
.dot-danger { background: var(--danger); } .dot-warning { background: var(--warning); } .dot-info { background: var(--info); }

/* Chart */
.chart { width: 100%; height: auto; display: block; }
.chart text { fill: var(--muted); font-size: 11px; }
.chart .grid-line { stroke: var(--border); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.bar-row { display: grid; grid-template-columns: 140px 1fr 110px; gap: 10px; align-items: center; padding: 5px 0; font-size: 13px; }
.bar-track { background: var(--surface-2); border-radius: 4px; height: 10px; overflow: hidden; }
.bar-fill { background: var(--chart-1); height: 100%; border-radius: 4px; }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(2, 6, 23, .5); display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; z-index: 100; overflow-y: auto; }
.modal { background: var(--surface); border-radius: 12px; width: 100%; max-width: 640px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal.wide { max-width: 860px; }
.modal-head { display: flex; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-size: 16px; flex: 1; }
.modal-body { padding: 18px 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--border); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.field label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 4px; }
.field.full { grid-column: 1 / -1; }
.field .req { color: var(--danger); }
.field .hint { font-size: 11.5px; color: var(--muted); margin-top: 3px; }
.form-error { background: var(--danger-soft); color: var(--danger); padding: 8px 12px; border-radius: 8px; margin-bottom: 12px; display: none; }
.form-warn { background: var(--warning-soft); color: var(--warning); padding: 8px 12px; border-radius: 8px; margin-top: 12px; display: none; }
.check { display: flex; gap: 8px; align-items: center; }

/* Toast */
.toast-root { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast { background: var(--text); color: var(--surface); padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); font-weight: 500; animation: tin .2s ease-out; }
.toast.err { background: var(--danger); color: #fff; }
@keyframes tin { from { transform: translateY(8px); opacity: 0; } }

/* Welcome */
.welcome { max-width: 620px; margin: 30px auto; text-align: center; padding: 32px; }
.welcome h2 { font-size: 22px; margin-bottom: 8px; }
.welcome p { color: var(--muted); }

.print-head { display: none; }

/* ===== Responsive ===== */
@media (max-width: 1000px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .sidebar { position: fixed; left: 0; top: 0; z-index: 60; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; }
  .scrim.show { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 50; }
  .menu-btn { display: inline-grid; }
  .topbar { padding: 12px 16px; }
  .view { padding: 16px 16px 40px; }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .kpi-value { font-size: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .toolbar .input { flex: 1 1 140px; min-width: 0; }
  .today { display: none; }
  .bar-row { grid-template-columns: 90px 1fr 90px; }
  .modal-backdrop { padding: 12px; }
}

/* ===== Print ===== */
@media print {
  .sidebar, .topbar, .toolbar, .no-print, .tabs, .actions { display: none !important; }
  body, .card { background: #fff !important; color: #000 !important; box-shadow: none !important; }
  .view { padding: 0; max-width: none; }
  .print-head { display: block; margin-bottom: 12px; }
  .card { border: 0; }
  .table th, .table td { padding: 5px 6px; font-size: 11px; }
}

/* Setup checklist */
.setup-step { display: flex; gap: 12px; align-items: flex-start; padding: 10px 6px; border-bottom: 1px solid var(--border); text-decoration: none; color: inherit; border-radius: 6px; }
.setup-step:hover { background: var(--surface-2); }
.setup-step:last-of-type { border-bottom: 0; }
.setup-num { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; flex-shrink: 0; background: var(--primary-soft); color: var(--primary); font-weight: 700; font-size: 13px; }
.setup-step.done .setup-num { background: var(--success); color: #fff; }
.setup-step.done .strong { text-decoration: line-through; color: var(--muted); }

/* Help guide */
.help details { border-bottom: 1px solid var(--border); }
.help details:last-child { border-bottom: 0; }
.help summary { cursor: pointer; padding: 14px 16px; font-weight: 600; font-size: 15px; list-style: none; display: flex; gap: 10px; align-items: center; }
.help summary::-webkit-details-marker { display: none; }
.help summary::before { content: '›'; font-size: 18px; color: var(--muted); transition: transform .15s; width: 10px; }
.help details[open] summary::before { transform: rotate(90deg); }
.help .help-body { padding: 0 16px 16px 36px; }
.help .help-body p, .help .help-body li { line-height: 1.6; }
.help .help-body ol, .help .help-body ul { padding-left: 20px; margin: 6px 0 10px; }
.help .tip { background: var(--info-soft); color: var(--text); border-left: 3px solid var(--info); padding: 8px 12px; border-radius: 6px; margin: 10px 0; }
.toolbar .input.help-search { width: 360px; max-width: 100%; }

/* Signed-in user */
.topbar-right { display: flex; align-items: center; gap: 12px; }
.user-box { display: flex; align-items: center; gap: 8px; }
.user-box:empty { display: none; }
.user-chip { display: inline-flex; align-items: center; gap: 6px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 13px; }
@media (max-width: 820px) { .user-chip { display: none; } }

/* Payment screenshot */
.shot-preview { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 16px; }
.shot-preview img { width: 120px; max-height: 220px; object-fit: cover; object-position: top; border-radius: 8px; border: 1px solid var(--border); cursor: zoom-in; flex-shrink: 0; }
.shot-preview > div { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.ai-banner { padding: 8px 12px; border-radius: 8px; line-height: 1.45; }
.ai-banner.ok { background: var(--success-soft); color: var(--success); }
.ai-banner.warn { background: var(--warning-soft); color: var(--warning); }
.ai-banner.danger { background: var(--danger-soft); color: var(--danger); }
.spinner { width: 26px; height: 26px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 820px) { .shot-preview img { width: 84px; } }