/*--------------------------------------------------------------
  Variant B — Royal Indigo
  Laboratory Management System
  Swap with lab-theme.css in layout to activate
--------------------------------------------------------------*/

:root {
  --lab-primary:        #3949ab;
  --lab-primary-dark:   #1a237e;
  --lab-primary-light:  #9fa8da;
  --lab-primary-subtle: #e8eaf6;
  --lab-secondary:      #37474f;
  --lab-accent:         #7b1fa2;
  --lab-success:        #2e7d32;
  --lab-warning:        #f57f17;
  --lab-danger:         #c62828;
  --lab-body-bg:        #f3f4f8;
  --lab-card-shadow:    0 2px 14px rgba(26, 35, 126, .08);
  --lab-radius:         6px;
  --lab-font:           'Open Sans', sans-serif;
  --lab-heading-font:   'Nunito', sans-serif;
}

/* ── Global ── */
body { background: var(--lab-body-bg); font-family: var(--lab-font); }
::selection { background: var(--lab-primary-light); color: #fff; }
a { color: var(--lab-primary); }
a:hover { color: var(--lab-primary-dark); }

/* ── Header / Navbar — Dark gradient ── */
.header, .header.fixed-top {
  background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
  box-shadow: 0 2px 8px rgba(26, 35, 126, .18);
  border-bottom: none;
}
.header .logo span {
  color: #fff; font-weight: 700;
  font-family: var(--lab-heading-font); letter-spacing: .3px;
}
.header .logo img { filter: brightness(0) invert(1); }
.header .navbar-nav .nav-link {
  color: rgba(255,255,255,.8); font-weight: 600; font-size: 14px;
  padding: 8px 14px; border-radius: var(--lab-radius);
  transition: background .2s, color .2s;
}
.header .navbar-nav .nav-link:hover,
.header .navbar-nav .nav-link:focus {
  color: #fff; background: rgba(255,255,255,.12);
}
.header .navbar-nav .nav-link.active,
.header .navbar-nav .nav-link.show {
  background: rgba(255,255,255,.2); color: #fff !important;
  backdrop-filter: blur(4px);
}
.header .navbar-toggler { border-color: rgba(255,255,255,.3); }
.header .navbar-toggler-icon { filter: invert(1); }

/* Dropdowns */
.header .dropdown-menu {
  border: none; border-top: 3px solid var(--lab-primary);
  border-radius: 0 0 var(--lab-radius) var(--lab-radius);
  box-shadow: 0 6px 24px rgba(26, 35, 126, .15);
  padding: 6px 0; animation: labDropIn .2s ease-out;
}
@keyframes labDropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.header .dropdown-item {
  font-size: 13.5px; padding: 7px 18px;
  color: var(--lab-secondary); transition: background .15s, color .15s;
}
.header .dropdown-item:hover,
.header .dropdown-item:focus {
  background: var(--lab-primary-subtle); color: var(--lab-primary-dark);
}
.header .dropdown-item.active,
.header .dropdown-menu a.active {
  background: var(--lab-primary) !important; color: #fff !important; font-weight: 700;
}
.header .dropdown-divider { border-color: #e8ecef; margin: 2px 0; }
.header .nav-profile { color: rgba(255,255,255,.9); font-weight: 600; }
.header .nav-profile .bi-person-circle { font-size: 22px; color: var(--lab-primary-light); }
.header .nav-profile .dropdown-toggle { color: rgba(255,255,255,.9); }

/* ── Page Title ── */
.pagetitle h1 {
  color: var(--lab-primary-dark); font-family: var(--lab-heading-font);
  font-weight: 700; font-size: 22px;
}
.breadcrumb a { color: var(--lab-primary); }

/* ── Cards ── */
.card {
  border: none; border-radius: var(--lab-radius);
  box-shadow: var(--lab-card-shadow);
  border-left: 4px solid var(--lab-primary);
  border-top: none;
  transition: box-shadow .25s;
}
.card:hover { box-shadow: 0 4px 22px rgba(26, 35, 126, .14); }
.card-title {
  color: var(--lab-primary-dark); font-family: var(--lab-heading-font);
  font-weight: 600; font-size: 16px;
}
.card-title span { color: #78909c; font-weight: 400; }

/* Dashboard Info Cards */
.dashboard .info-card { border-left: 4px solid var(--lab-primary); border-top: none; }
.dashboard .info-card h6 { color: var(--lab-primary-dark); font-weight: 700; }
.dashboard .info-card .card-title {
  font-size: 15px; text-transform: uppercase; letter-spacing: .5px; color: #546e7a;
}
.dashboard .sales-card .card-icon { color: var(--lab-primary); background: var(--lab-primary-subtle); }
.dashboard .revenue-card .card-icon { color: var(--lab-accent); background: #f3e5f5; }
.dashboard .customers-card .card-icon { color: #00838f; background: #e0f7fa; }

/* ── Buttons ── */
.btn-primary {
  background: linear-gradient(135deg, #283593, #3949ab);
  border: none; border-radius: var(--lab-radius); font-weight: 600;
  letter-spacing: .3px; transition: background .2s, transform .1s;
}
.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, #1a237e, #283593);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline-primary { color: var(--lab-primary); border-color: var(--lab-primary); }
.btn-outline-primary:hover { background: var(--lab-primary); border-color: var(--lab-primary); color: #fff; }
.btn-success { background: var(--lab-success); border-color: var(--lab-success); }
.btn-danger { background: var(--lab-danger); border-color: var(--lab-danger); }

/* ── Forms ── */
.form-control:focus, .form-select:focus {
  border-color: var(--lab-primary); box-shadow: 0 0 0 .2rem rgba(57, 73, 171, .15);
}
.form-control, .form-select {
  border-radius: var(--lab-radius); border-color: #cfd8dc; font-size: 14px;
}
.form-label { font-weight: 600; color: var(--lab-secondary); font-size: 13px; margin-bottom: 4px; }
.form-control:read-only { background-color: #eceff1; }
label:has(+ div input:required)::after,
label:has(+ div select:required)::after,
label:has(+ div textarea:required)::after,
label:has(+ input:required)::after,
label:has(+ select:required)::after,
label:has(+ textarea:required)::after { color: var(--lab-danger); }

/* ── Tables ── */
table.dataTable thead th, .table thead th {
  background: linear-gradient(135deg, #1a237e, #283593) !important; color: #fff;
  font-weight: 600; font-size: 13px; text-transform: uppercase;
  letter-spacing: .4px; border-bottom: none; padding: 10px 12px; white-space: nowrap;
}
table.dataTable thead th:first-child, .table thead th:first-child { border-radius: var(--lab-radius) 0 0 0; }
table.dataTable thead th:last-child, .table thead th:last-child { border-radius: 0 var(--lab-radius) 0 0; }
table.dataTable tbody td, .table tbody td {
  font-size: 13.5px; color: var(--lab-secondary); vertical-align: middle; padding: 8px 12px;
}
table.dataTable tbody tr:hover, .table-hover tbody tr:hover { background: var(--lab-primary-subtle); }
table.dataTable tbody tr.odd { background-color: #f8f8fc; }

/* Pagination */
.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.page-item.active .page-link {
  background: var(--lab-primary) !important; border-color: var(--lab-primary) !important; color: #fff !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button:hover,
.page-link:hover {
  background: var(--lab-primary-subtle) !important; border-color: var(--lab-primary-light) !important;
  color: var(--lab-primary-dark) !important;
}
.page-link { color: var(--lab-primary); }

/* ── Modals ── */
.modal-header {
  background: linear-gradient(135deg, #1a237e, #283593); color: #fff;
  border-bottom: none; border-radius: var(--lab-radius) var(--lab-radius) 0 0;
}
.modal-header .modal-title { font-family: var(--lab-heading-font); font-weight: 700; font-size: 16px; }
.modal-header .btn-close { filter: invert(1); }
.modal-content { border: none; border-radius: var(--lab-radius); box-shadow: 0 8px 30px rgba(26, 35, 126, .18); }

/* ── Badges ── */
.badge.bg-success { background-color: var(--lab-success) !important; }
.badge.bg-primary { background-color: var(--lab-primary) !important; }
.badge.bg-danger  { background-color: var(--lab-danger) !important; }
.badge.bg-warning { background-color: var(--lab-warning) !important; color: #fff; }

/* ── Alerts ── */
.alert { border-radius: var(--lab-radius); font-size: 14px; border-left-width: 4px; }

/* ── Misc ── */
.custom-hr { border-color: var(--lab-primary) !important; opacity: .6; }
.nav-link.active { background: var(--lab-primary) !important; color: #fff !important; }
.dropdown-menu a.active { background: var(--lab-primary) !important; color: #fff !important; }

/* ── Login / Auth ── */
.register .logo span, .auth-layout .logo span, .app_name {
  color: var(--lab-primary-dark) !important; font-family: var(--lab-heading-font);
}
section.register .card { border-top: none; border-left: 4px solid var(--lab-primary); }
section.register .card-title { color: var(--lab-primary-dark); }
section.register .btn-primary {
  text-transform: uppercase; letter-spacing: .5px; padding: 10px; font-size: 15px;
}
.credits, .credits a { color: #78909c; font-size: 13px; }
.credits a:hover { color: var(--lab-primary); }

/* ── Footer — Dark ── */
.footer { border-top: none; background: var(--lab-primary-dark); }
.footer .copyright { color: rgba(255,255,255,.7); font-size: 13px; }
.footer .copyright a { color: var(--lab-primary-light); font-weight: 600; }

/* ── Back to Top ── */
.back-to-top { background: var(--lab-primary) !important; border-radius: var(--lab-radius); }
.back-to-top:hover { background: var(--lab-primary-dark) !important; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: var(--lab-body-bg); }
::-webkit-scrollbar-thumb { background: var(--lab-primary-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--lab-primary); }

/* ── Import rows ── */
.lightRed  { background-color: #ffebee !important; }
.lightGreen { background-color: #e8f5e9 !important; }

/* ── Select2 ── */
.select2-container--default .select2-selection--single {
  border-color: #cfd8dc; border-radius: var(--lab-radius); height: 36px; padding: 4px 8px;
}
.select2-container--default .select2-selection--single:focus,
.select2-container--default.select2-container--focus .select2-selection--single {
  border-color: var(--lab-primary); box-shadow: 0 0 0 .2rem rgba(57, 73, 171, .15);
}
.select2-container--default .select2-results__option--highlighted[aria-selected] {
  background-color: var(--lab-primary);
}

/* ── Utilities ── */
.text-lab-primary { color: var(--lab-primary) !important; }
.bg-lab-primary   { background-color: var(--lab-primary) !important; }
.bg-lab-subtle    { background-color: var(--lab-primary-subtle) !important; }
.border-lab       { border-color: var(--lab-primary) !important; }