:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --border: #e2e6ed;
  --text: #1f2937;
  --text-muted: #6b7280;
  --primary: #2f6feb;
  --primary-dark: #1f4fbf;
  --primary-light: #e8f0fe;
  --success: #1a9a5b;
  --success-bg: #e6f7ee;
  --error: #d64545;
  --error-bg: #fdeaea;
  --warn-bg: #fff7e0;
  --sidebar-dark: #16233d;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
}

a { text-decoration: none; color: inherit; }

/* ---------- Navbar ---------- */
.navbar {
  background: var(--sidebar-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.2px;
  color: #fff;
}

.navbar-brand .brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, #4f8bff, #2f6feb);
  display: inline-block;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  color: #c9d3e5;
  padding: 9px 16px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 14px;
  transition: background 0.15s ease, color 0.15s ease;
  display: flex;
  align-items: center;
  gap: 7px;
}

.nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }

.nav-link.active {
  background: var(--primary);
  color: #fff;
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #dbe3f2;
  font-size: 13.5px;
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.role-badge {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  background: rgba(255,255,255,0.1);
  padding: 2px 7px;
  border-radius: 20px;
  color: #a9b8d6;
}

.logout-btn {
  color: #f3c9c9;
  font-size: 13.5px;
  padding: 7px 12px;
  border-radius: 7px;
  border: 1px solid rgba(255,255,255,0.15);
}
.logout-btn:hover { background: rgba(214,69,69,0.15); color: #ffb4b4; }

/* ---------- Layout ---------- */
.page-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h1 {
  font-size: 24px;
  margin: 0 0 4px;
  font-weight: 700;
}

.page-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.stat-pill {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 13.5px;
  font-weight: 600;
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 22px;
}

.card-title {
  font-size: 15.5px;
  font-weight: 700;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.grid-2 { display: grid; grid-template-columns: 1.1fr 1.6fr; gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

@media (max-width: 980px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Forms ---------- */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

input[type=text], input[type=password], input[type=search],
input[type=datetime-local], input[type=date], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfcfe;
  font-size: 14px;
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,111,235,0.15);
  background: #fff;
}

.field { margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: #f4f6f9; }

.btn-danger { background: var(--error-bg); color: var(--error); }
.btn-danger:hover { background: #f9d6d6; }

.btn-success { background: var(--success-bg); color: var(--success); }
.btn-success:hover { background: #d4f1e2; }

.btn-sm { padding: 6px 11px; font-size: 12.5px; border-radius: 6px; }
.btn-block { width: 100%; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.8px;
}

table.data-table thead th {
  text-align: left;
  background: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.data-table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid #edf0f5;
  color: var(--text);
  vertical-align: middle;
}

table.data-table tbody tr:hover { background: #fafbfd; }

.mono { font-family: "SFMono-Regular", Consolas, monospace; font-size: 13px; color: var(--primary-dark); font-weight: 600; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
  text-transform: capitalize;
  letter-spacing: 0.2px;
}
.badge-open { background: #e8f0fe; color: #2f6feb; }
.badge-in_progress { background: #fff3d6; color: #a5710a; }
.badge-completed { background: var(--success-bg); color: var(--success); }
.badge-cancelled { background: var(--error-bg); color: var(--error); }

.badge-role-admin { background: #ffe3ec; color: #c22a63; }
.badge-role-manager { background: #e6e9fb; color: #4b4fd1; }
.badge-role-technician { background: #e0f4f2; color: #147a72; }
.badge-role-staff { background: #eef1f5; color: #56606f; }

.badge-active { background: var(--success-bg); color: var(--success); }
.badge-inactive { background: #f1f2f4; color: #8a8f98; }

.actions-cell { display: flex; gap: 6px; white-space: nowrap; }

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 34px; margin-bottom: 10px; }

/* ---------- Flash messages ---------- */
.flash-stack { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.flash {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.flash-success { background: var(--success-bg); color: var(--success); border: 1px solid #b9e6cf; }
.flash-error { background: var(--error-bg); color: var(--error); border: 1px solid #f2bcbc; }
.flash-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #c7d9fb; }

/* ---------- Filter bar (search page) ---------- */
.filter-bar {
  display: grid;
  grid-template-columns: repeat(5, 1fr) auto;
  gap: 12px;
  align-items: end;
}
@media (max-width: 1100px) {
  .filter-bar { grid-template-columns: repeat(2, 1fr); }
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.page-size-select { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-muted); }
.page-size-select select { width: auto; padding: 6px 10px; }

.pagination { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 7px 12px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}
.pagination a:hover { background: #f4f6f9; }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { color: #c3c9d3; pointer-events: none; }

/* ---------- Login page ---------- */
.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1c2b4a 0%, #16233d 45%, #0f1930 100%);
  padding: 20px;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
  width: 100%;
  max-width: 400px;
  padding: 40px 36px 32px;
}

.login-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  margin-bottom: 6px;
}
.login-logo .brand-dot {
  width: 12px; height: 12px; border-radius: 4px;
  background: linear-gradient(135deg, #4f8bff, #2f6feb);
}
.login-logo span { font-weight: 800; font-size: 20px; color: var(--text); }

.login-card h2 {
  text-align: center;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  margin: 0 0 28px;
}

.login-hint {
  margin-top: 18px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-muted);
  background: #f7f9fc;
  border-radius: 8px;
  padding: 10px;
  border: 1px dashed var(--border);
}

/* Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
}
.modal-backdrop.open { display: flex; }

.modal-box {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  padding: 24px;
  box-shadow: var(--shadow-md);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-box h3 { margin: 0 0 18px; font-size: 17px; }
.modal-close { float: right; cursor: pointer; color: var(--text-muted); font-size: 20px; line-height: 1; }

.helper-text { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ---------- Checklist grid ---------- */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 14px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}
@media (max-width: 700px) {
  .checklist-grid { grid-template-columns: repeat(2, 1fr); }
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text);
  cursor: pointer;
}
.checklist-item input[type=checkbox] {
  width: 17px;
  height: 17px;
  accent-color: var(--primary);
  cursor: pointer;
}
.checklist-readonly .checklist-item {
  cursor: default;
  font-size: 14px;
}
.checklist-readonly .checklist-item span:first-child {
  font-size: 16px;
  width: 18px;
}

/* ---------- Evidence links ---------- */
.evidence-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
}
.evidence-link:hover { text-decoration: underline; }

/* ---------- Detail grid (view modal) ---------- */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
}
.detail-grid > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.detail-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  font-weight: 600;
}