:root {
  --navy-900: #0b2545;
  --navy-800: #13315c;
  --navy-700: #1b4079;
  --accent-red: #c1272d;
  --accent-red-dark: #9c1d22;
  --bg: #f2f4f8;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border: #e3e7ee;
  --warning: #b8860b;
  --warning-bg: #fff6e0;
  --info: #0f6fa3;
  --info-bg: #e3f3fb;
  --teal: #0e7c6b;
  --teal-bg: #e2f5f1;
  --success: #1c8a4b;
  --success-bg: #e5f6ec;
  --danger-bg: #fdecec;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(11, 37, 69, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", -apple-system, sans-serif;
  font-size: 14px;
}

a { color: var(--navy-700); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 12px;
}

.sidebar .brand svg { flex-shrink: 0; }
.sidebar .brand-text { font-size: 16px; font-weight: 600; line-height: 1.3; }
.sidebar .brand-text small { display: block; font-weight: 400; font-size: 11px; opacity: 0.65; }

.sidebar nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }

.sidebar nav a {
  color: rgba(255,255,255,0.85);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.sidebar nav a.active { background: var(--accent-red); color: #fff; font-weight: 600; }

.sidebar .user-box {
  margin: 12px 10px 0;
  padding: 12px 14px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 12px;
  color: rgba(255,255,255,0.7);
}
.sidebar .user-box strong { display: block; color: #fff; font-size: 14px; margin-bottom: 2px; }
.sidebar .user-box .role-tag {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.15);
  font-size: 11px;
}
.sidebar .logout-link { display: block; margin-top: 10px; color: #ffd3d3; font-size: 12px; }

.main {
  flex: 1;
  min-width: 0;
  padding: 24px 28px 40px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.topbar h1 { font-size: 20px; margin: 0; color: var(--navy-900); }
.topbar .sub { color: var(--text-muted); font-size: 13px; margin-top: 4px; }
.topbar-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.server-clock {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.server-clock-label { font-size: 11.5px; color: var(--text-muted); }
.server-clock-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy-900);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- Cards / tables ---------- */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 20px;
}

.stat-row { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.stat-card {
  flex: 1;
  min-width: 150px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 16px 18px;
}
.stat-card .num { font-size: 26px; font-weight: 700; color: var(--navy-900); }
.stat-card .label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card.alert .num { color: var(--accent-red); }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}
.filters select, .filters input[type=text] {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 13px;
  background: #fff;
}
.filters label.checkbox { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.status-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
thead th {
  text-align: left;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
.sort-link { color: var(--text-muted); text-decoration: none; }
.sort-link:hover { color: var(--navy-800); text-decoration: none; }
tbody td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  vertical-align: middle;
}
tbody tr:hover { background: #fafbfd; }
tbody tr.overdue-warn { background: var(--warning-bg); }
tbody tr.overdue-danger { background: var(--danger-bg); }
tbody tr.overdue-danger:hover { background: #fbdede; }
tbody tr.overdue-warn:hover { background: #ffefc7; }
tbody tr.row-done { background: var(--success-bg); }
tbody tr.row-done:hover { background: #d7f0e0; }
tbody tr.row-accepted { background: var(--warning-bg); }
tbody tr.row-accepted:hover { background: #ffefc7; }

.content-cell { max-width: 320px; }
.content-cell .full { color: var(--text-main); }
.muted { color: var(--text-muted); font-size: 12px; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-teal { background: var(--teal-bg); color: var(--teal); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-secondary { background: #eef0f4; color: var(--text-muted); }
.badge-orange { background: #fdecd8; color: #b5540b; }
.badge-purple { background: #ede9fe; color: #6d28d9; }
.badge-danger { background: var(--danger-bg); color: var(--accent-red-dark); }
.badge-role-admin { background: #efe4fb; color: #6b21a8; }
.badge-role-leader { background: #fde4e4; color: var(--accent-red-dark); }
.badge-role-officer { background: var(--info-bg); color: var(--info); }

/* ---------- Buttons / forms ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--navy-800); color: #fff; }
.btn-primary:hover { background: var(--navy-900); }
.btn-danger { background: var(--accent-red); color: #fff; }
.btn-danger:hover { background: var(--accent-red-dark); }
.btn-outline { background: #fff; border: 1px solid var(--border); color: var(--text-main); }
.btn-outline:hover { background: #f5f6f9; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.status-select {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 12.5px;
  background: #fff;
}
.status-select:disabled { background: #f5f5f5; color: var(--text-muted); cursor: not-allowed; }

form.stack { display: flex; flex-direction: column; gap: 16px; max-width: 560px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text-main); }
.form-group .hint { font-size: 12px; color: var(--text-muted); }
input[type=text], input[type=password], input[type=tel], input[type=datetime-local], textarea, select.wide {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-family: inherit;
  width: 100%;
}
textarea { resize: vertical; min-height: 90px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.form-actions { display: flex; gap: 10px; margin-top: 6px; }

/* ---------- Autocomplete (searchable select) ---------- */
.autocomplete { position: relative; }
.autocomplete-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(11, 37, 69, 0.14);
  z-index: 20;
}
.autocomplete-item {
  padding: 9px 12px;
  font-size: 13.5px;
  cursor: pointer;
}
.autocomplete-item:hover,
.autocomplete-item.active { background: var(--info-bg); color: var(--navy-900); }

/* ---------- Login page ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top left, var(--navy-700), var(--navy-900) 60%);
  padding: 20px;
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 36px;
  width: 380px;
  max-width: 100%;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.login-card .logo-row { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-bottom: 24px; }
.login-card h1 { font-size: 18px; margin: 0; color: var(--navy-900); }
.login-card .subtitle { font-size: 12.5px; color: var(--text-muted); }
.login-card .error-box {
  background: var(--danger-bg);
  color: var(--accent-red-dark);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}
.login-card .demo-box {
  margin-top: 20px;
  padding: 12px 14px;
  background: #f7f8fb;
  border-radius: 8px;
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- Flash ---------- */
.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 13.5px;
}
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--danger-bg); color: var(--accent-red-dark); }

/* ---------- Modal (popup reminders) ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 37, 69, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-box {
  background: #fff;
  border-radius: 14px;
  width: 480px;
  max-width: 92vw;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0,0,0,0.3);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 16px; margin: 0; color: var(--accent-red-dark); display: flex; align-items: center; gap: 8px; }
.modal-body { padding: 12px 22px; overflow-y: auto; }
.modal-footer { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.reminder-item {
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
}
.reminder-item:last-child { border-bottom: none; }
.reminder-item .msg { color: var(--text-main); line-height: 1.6; }
.reminder-item .meta { color: var(--text-muted); font-size: 11.5px; margin-top: 4px; }
.close-x { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted); line-height: 1; }

.empty-state { text-align: center; padding: 40px 0; color: var(--text-muted); }

@media (max-width: 900px) {
  .sidebar { width: 72px; }
  .sidebar .brand-text, .sidebar nav a span, .sidebar .user-box { display: none; }
  .sidebar nav a { justify-content: center; }
  .main { padding: 16px; }
}

@media (max-width: 640px) {
  .app-shell { flex-direction: column; }
  .sidebar {
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 10px 12px;
    gap: 10px;
    overflow-x: auto;
  }
  .sidebar .brand {
    display: flex;
    border-bottom: none;
    margin-bottom: 0;
    padding: 0;
    flex-shrink: 0;
  }
  .sidebar .brand-text { display: block; font-size: 13px; white-space: nowrap; }
  .sidebar .brand-text small { display: none; }
  .sidebar nav {
    flex: 0 0 auto;
    flex-direction: row;
    padding: 0;
    gap: 4px;
  }
  .sidebar nav a { white-space: nowrap; padding: 8px 10px; font-size: 12.5px; }
  .sidebar nav a span { display: inline; }
  .sidebar .user-box {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 0 auto;
    padding: 0;
    border-top: none;
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 12px;
  }
  .sidebar .user-box strong,
  .sidebar .user-box .phone,
  .sidebar .user-box .role-row { display: none; }
  .sidebar .logout-link { margin-top: 0; font-size: 12px; }

  .main { padding: 12px; }
  .topbar { flex-wrap: wrap; gap: 10px; }
  .topbar h1 { font-size: 18px; }
  .stat-row { gap: 8px; }
  .stat-card { min-width: calc(50% - 4px); padding: 12px 14px; }
  .filters { flex-direction: column; align-items: stretch; }
  .filters select, .filters input[type=text] { width: 100%; }
  .status-filter-group { width: 100%; }
  .card { padding: 14px; }
  .modal-box { width: 100%; }
}