/* themes/blue.css */
body { background: #f0f6ff; color: #0f172a; }
#sidebar { background: #ffffff !important; color: #0f172a; border-right: 1px solid #bfdbfe; }
#sidebar .sidebar-header { background: #dbeafe; color: #1e3a8a; }
#sidebar ul li a { color: #1e40af; }
#sidebar ul li a:hover, #sidebar ul li.active > a { color: #ffffff; background: #2563eb; box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25); }
.sidebar-divider-title { color: #3b82f6; border-top: 1px solid #dbeafe; }
.btn-primary { background: #2563eb !important; border: none !important; color: #fff !important; }
.navbar { background: #dbeafe !important; border: 1px solid #bfdbfe !important; color: #1e3a8a !important; }
.navbar-brand { color: #1e3a8a !important; }
.card, .modal-content, .notif-dropdown { background: #ffffff !important; border: 1px solid #bfdbfe !important; color: #0f172a !important; box-shadow: 0 4px 12px rgba(37, 99, 235, 0.05); }
.card-header { background: #eff6ff !important; border-bottom: 1px solid #bfdbfe !important; color: #1e3a8a !important; }
.modal-header { background: #eff6ff !important; border-bottom: 1px solid #bfdbfe !important; }
.modal-footer { border-top: 1px solid #bfdbfe !important; }
.form-control, .form-select { background: #f8fafc !important; border: 1.5px solid #93c5fd !important; color: #1e3a8a !important; font-weight: 500; }
.form-control:focus, .form-select:focus { background: #ffffff !important; border-color: #2563eb !important; box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.2) !important; }
.form-control::placeholder { color: #94a3b8; }
.form-select option { background: #ffffff; color: #1e3a8a; }
.table { color: #0f172a !important; }
.table th { background: #eff6ff !important; color: #1e3a8a !important; }
.table-bordered>:not(caption)>*>* { border-color: #dbeafe; }
.user-tag { background: #dbeafe; color: #1e40af; }
.notif-bell-btn { background: #ffffff !important; border: 1px solid #bfdbfe !important; color: #1e40af !important; }
.notif-item-unread { background: #dbeafe !important; color: #1e3a8a !important; }
.notif-item-read { background: #ffffff !important; color: #334155 !important; }
.notif-dropdown .list-group-item { color: #0f172a !important; border-color: #dbeafe !important; }
.notif-dropdown .text-muted { color: #64748b !important; }
.notif-dropdown a { color: #2563eb !important; }