/* ============================================================
   Knowledge Base styles
   A small, conflict-free subset of Bootstrap-like layout helpers
   and components used by the KB views. Loaded only on KB pages so
   it never clashes with the custom main.css site chrome.
   (.btn, .btn-primary, .card, .card-body already come from main.css.)
   ============================================================ */

.container-fluid { max-width: 1200px; margin: 0 auto; padding: 40px 20px; color: var(--text-primary, #333); }

/* ---------- Grid ---------- */
.row { display: flex; flex-wrap: wrap; margin: 0 -12px; }
.row > [class*="col-"] { padding: 0 12px; width: 100%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

@media (min-width: 768px) {
    .col-md-4 { flex: 0 0 33.3333%; max-width: 33.3333%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-8 { flex: 0 0 66.6667%; max-width: 66.6667%; }
    .offset-md-2 { margin-left: 16.6667%; }
    .text-md-end { text-align: right; }
}
@media (min-width: 992px) {
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    .col-lg-4 { flex: 0 0 33.3333%; max-width: 33.3333%; }
    .col-lg-9 { flex: 0 0 75%; max-width: 75%; }
}

/* ---------- Card extras (base .card/.card-body in main.css) ---------- */
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.card-text { margin-bottom: 8px; }
.card-header { padding: 16px 20px; background: #f8f9fa; border-bottom: 1px solid var(--border-color, #e0e0e0); font-weight: 600; }
.card-footer { padding: 14px 20px; background: #f8f9fa; border-top: 1px solid var(--border-color, #e0e0e0); }
.h-100 { height: 100%; }
.border-warning { border-color: var(--warning-color, #f39c12) !important; }
.hover-shadow { transition: box-shadow 0.3s ease, transform 0.3s ease; }
.hover-shadow:hover { box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15); transform: translateY(-3px); }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 4px 10px; font-size: 12px; font-weight: 600; border-radius: 12px; color: #fff; }
.bg-primary { background: var(--primary-color, #3498db) !important; color: #fff; }
.bg-secondary { background: #6c757d !important; color: #fff; }
.bg-warning { background: var(--warning-color, #f39c12) !important; color: #1a1a1a; }
.bg-white { background: #fff !important; }

/* ---------- List group ---------- */
.list-group { display: flex; flex-direction: column; border-radius: 8px; overflow: hidden; border: 1px solid var(--border-color, #e0e0e0); }
.list-group-flush { border: none; border-radius: 0; }
.list-group-item { padding: 14px 18px; background: #fff; border-bottom: 1px solid var(--border-color, #e0e0e0); text-decoration: none; color: var(--text-primary, #333); }
.list-group-item:last-child { border-bottom: none; }
.list-group-item-action:hover { background: #f5f6f8; }

/* ---------- Input group / form ---------- */
.input-group { display: flex; width: 100%; }
.input-group .form-control { flex: 1 1 auto; border-top-right-radius: 0; border-bottom-right-radius: 0; }
.input-group .btn { border-top-left-radius: 0; border-bottom-left-radius: 0; }
.input-group-lg .form-control, .input-group-lg .btn { padding: 14px 18px; font-size: 17px; }
.form-control { display: block; width: 100%; padding: 10px 14px; font-size: 15px; border: 1px solid var(--border-color, #e0e0e0); border-radius: 6px; background: #fff; }
.form-control:focus { outline: none; border-color: var(--primary-color, #3498db); box-shadow: 0 0 0 3px rgba(52,152,219,0.15); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 20px; font-size: 14px; }
.breadcrumb-item a { color: var(--primary-color, #3498db); text-decoration: none; }
.breadcrumb-item + .breadcrumb-item::before { content: "/"; color: #999; margin-right: 8px; }
.breadcrumb-item.active { color: #999; }

/* ---------- Pagination ---------- */
.pagination { display: flex; gap: 6px; list-style: none; padding: 0; margin: 20px 0 0; justify-content: center; }
.page-link { display: block; padding: 8px 14px; border: 1px solid var(--border-color, #e0e0e0); border-radius: 6px; color: var(--primary-color, #3498db); text-decoration: none; }
.page-item.active .page-link { background: var(--primary-color, #3498db); border-color: var(--primary-color, #3498db); color: #fff; }
.page-item.disabled .page-link { color: #bbb; pointer-events: none; }

/* ---------- Button group / outline buttons ---------- */
.btn-group { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.btn-outline-secondary { background: #fff; color: #6c757d; border: 1px solid #6c757d; }
.btn-outline-secondary:hover { background: #6c757d; color: #fff; }
.btn-outline-success { background: #fff; color: var(--success-color, #2ecc71); border: 1px solid var(--success-color, #2ecc71); }
.btn-outline-success:hover { background: var(--success-color, #2ecc71); color: #fff; }
.btn-outline-danger { background: #fff; color: var(--danger-color, #e74c3c); border: 1px solid var(--danger-color, #e74c3c); }
.btn-outline-danger:hover { background: var(--danger-color, #e74c3c); color: #fff; }

/* ---------- Alerts ---------- */
.alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-danger { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

/* ---------- Article content ---------- */
.article-content { line-height: 1.8; font-size: 16px; }
.article-content h1, .article-content h2, .article-content h3 { margin: 24px 0 12px; }
.article-content p { margin-bottom: 16px; }
.article-content img { max-width: 100%; height: auto; }
.article-content pre { background: #f5f6f8; padding: 16px; border-radius: 6px; overflow: auto; }
.article-content code { background: #f5f6f8; padding: 2px 6px; border-radius: 4px; }

/* ---------- Typography helpers ---------- */
.display-4 { font-size: 40px; font-weight: 700; }
.lead { font-size: 19px; }
.h3 { font-size: 24px; font-weight: 600; }
.small { font-size: 85%; }
.fw-medium { font-weight: 500; }
.fs-1 { font-size: 36px; }
.fs-2 { font-size: 30px; }
.fs-3 { font-size: 26px; }
.opacity-75 { opacity: 0.75; }

.text-center { text-align: center; }
.text-end { text-align: right; }
.text-muted { color: var(--text-secondary, #666); }
.text-primary { color: var(--primary-color, #3498db); }
.text-warning { color: var(--warning-color, #f39c12); }
.text-danger { color: var(--danger-color, #e74c3c); }
.text-white { color: #fff; }
.text-decoration-none { text-decoration: none; }

/* ---------- Flex / spacing utilities ---------- */
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.flex-grow-1 { flex-grow: 1; }
.gap-3 { gap: 16px; }

.p-0 { padding: 0 !important; }
.pt-3 { padding-top: 16px; } .pt-4 { padding-top: 24px; }
.py-4 { padding-top: 24px; padding-bottom: 24px; }
.py-5 { padding-top: 48px; padding-bottom: 48px; }
.border-top { border-top: 1px solid var(--border-color, #e0e0e0); }
.border-bottom { border-bottom: 1px solid var(--border-color, #e0e0e0); }

.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 4px; } .mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; } .mb-4 { margin-bottom: 24px; } .mb-5 { margin-bottom: 48px; }
.mt-2 { margin-top: 8px; } .mt-3 { margin-top: 16px; } .mt-5 { margin-top: 48px; }
.me-2 { margin-right: 8px; } .me-3 { margin-right: 16px; }
.ms-2 { margin-left: 8px; } .ms-3 { margin-left: 16px; }