/* ==========================================================================
   Courses listing page ("دوره‌ها") — styles
   ========================================================================== */

/* ---------- Page banner ---------- */
.page-banner {
  position: relative;
  padding-top: calc(var(--header-height) + 2.2rem);
  padding-bottom: 2.6rem;
  background:
    radial-gradient(ellipse 55% 60% at 90% 0%, rgba(79,175,143,0.14), transparent 60%),
    var(--color-surface-alt);
}
.page-banner .breadcrumb-nav .breadcrumb { margin: 0; padding: 0; background: transparent; font-size: 0.9rem; }
.page-banner .breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before { content: "\f104"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--color-text-muted); }
.page-banner .breadcrumb-nav a { color: var(--color-text-muted); }
.page-banner .breadcrumb-nav .active { color: var(--color-primary); font-weight: 600; }
.page-banner h1 { margin-top: 0.75rem; margin-bottom: 0.4rem; font-size: clamp(1.7rem, 3vw, 2.35rem); }
.page-banner p { color: var(--color-text-muted); margin-bottom: 0; max-width: 640px; }

/* ---------- Layout: sidebar + results ---------- */
.courses-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2.25rem; align-items: start; }
@media (max-width: 991.98px) {
  .courses-layout { grid-template-columns: 1fr; }
}

/* ---------- Filter sidebar ---------- */
.filter-sidebar {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.6rem;
  position: sticky;
  top: calc(var(--header-height) + 1.25rem);
}
.filter-block { padding-block: 1.25rem; border-bottom: 1px solid var(--color-border); }
.filter-block:first-child { padding-top: 0; }
.filter-block:last-child { border-bottom: none; padding-bottom: 0; }
.filter-block-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.filter-block-title i { color: var(--color-primary); font-size: 0.85rem; }

.filter-check-list { display: flex; flex-direction: column; gap: 0.65rem; }
.filter-check-item {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  font-size: 0.9rem; cursor: pointer;
}
.filter-check-item .form-check-input { cursor: pointer; }
.filter-check-item .form-check-input:checked { background-color: var(--color-primary); border-color: var(--color-primary); }
.filter-check-item .count { color: var(--color-text-muted); font-size: 0.78rem; }

.price-range-values { display: flex; justify-content: space-between; font-size: 0.82rem; color: var(--color-text-muted); margin-top: 0.6rem; }
.price-range-wrap { position: relative; height: 34px; }
.price-range-wrap input[type="range"] {
  position: absolute; width: 100%; top: 12px; appearance: none; background: transparent; pointer-events: none;
}
.price-range-wrap input[type="range"]::-webkit-slider-thumb {
  appearance: none; pointer-events: auto;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--color-primary); box-shadow: var(--shadow-sm); cursor: pointer;
  border: 2px solid #fff;
}
.price-range-wrap input[type="range"]::-moz-range-thumb {
  pointer-events: auto; width: 18px; height: 18px; border-radius: 50%;
  background: var(--color-primary); border: 2px solid #fff; cursor: pointer;
}
.price-range-track { position: absolute; top: 15px; right: 0; left: 0; height: 4px; background: var(--color-surface-alt); border-radius: 2px; }
.price-range-fill { position: absolute; top: 15px; height: 4px; background: var(--color-primary); border-radius: 2px; }

.btn-clear-filters {
  width: 100%; text-align: center; font-size: 0.85rem; font-weight: 600;
  color: var(--color-danger); background: none; border: none; padding: 0.4rem;
}

/* Mobile filter trigger + offcanvas reuse */
.mobile-filter-trigger { display: none; }
@media (max-width: 991.98px) {
  .filter-sidebar { display: none; }
  .mobile-filter-trigger { display: inline-flex; }
}

/* ---------- Toolbar ---------- */
.courses-toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  flex-wrap: wrap; margin-bottom: 1.75rem;
}
.results-count { font-size: 0.92rem; color: var(--color-text-muted); }
.results-count strong { color: var(--color-text); }

.toolbar-controls { display: flex; align-items: center; gap: 0.75rem; }
.sort-select {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--color-white);
  color: var(--color-text);
}

.view-toggle { display: flex; gap: 0.3rem; background: var(--color-surface-alt); padding: 0.3rem; border-radius: var(--radius-pill); }
.view-toggle button {
  width: 36px; height: 36px; border-radius: 50%; border: none; background: transparent;
  color: var(--color-text-muted); display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.view-toggle button.active { background: var(--color-white); color: var(--color-primary); box-shadow: var(--shadow-sm); }

/* ---------- Active filter chips ---------- */
.active-filter-chips { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 1.5rem; }
.filter-chip {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--color-surface-alt); color: var(--color-primary);
  border-radius: var(--radius-pill); padding: 0.4rem 0.9rem; font-size: 0.82rem; font-weight: 600;
}
.filter-chip button { border: none; background: none; color: inherit; display: flex; }

/* ---------- Results grid/list ---------- */
.courses-results-grid.is-grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.75rem;
}
.courses-results-grid.is-list-view { display: flex; flex-direction: column; gap: 1.25rem; }

.courses-results-grid.is-list-view .course-card { display: flex; flex-direction: row; }
.courses-results-grid.is-list-view .course-card > .position-relative:first-child {
  flex: 0 0 300px; max-width: 300px;
}
.courses-results-grid.is-list-view .course-card > .position-relative:first-child img { height: 100%; min-height: 220px; }
.courses-results-grid.is-list-view .course-card > div.p-3 { flex: 1; display: flex; flex-direction: column; justify-content: center; }

@media (max-width: 767.98px) {
  .courses-results-grid.is-list-view .course-card { flex-direction: column; }
  .courses-results-grid.is-list-view .course-card > .position-relative:first-child { max-width: 100%; flex: initial; }
}

/* ---------- Skeleton (initial load state, progressive enhancement hook) ---------- */
.course-skeleton-card { border-radius: var(--radius-md); overflow: hidden; background: var(--color-white); box-shadow: var(--shadow-sm); }
.course-skeleton-card .skeleton-img { height: 200px; }
.course-skeleton-card .skeleton-line { height: 14px; margin: 1rem 1.25rem 0; }
.course-skeleton-card .skeleton-line.w-60 { width: 60%; }
.course-skeleton-card .skeleton-line.w-80 { width: 80%; }
.course-skeleton-card .skeleton-line.mb-3 { margin-bottom: 1.5rem; }

/* ---------- Empty state ---------- */
.courses-empty-state { text-align: center; padding: 4rem 1rem; }
.courses-empty-state i { font-size: 2.4rem; color: var(--color-text-muted); margin-bottom: 1rem; }

/* ---------- Pagination ---------- */
.pagination-nav { margin-top: 2.5rem; }
.pagination .page-link {
  border: none; background: var(--color-white); color: var(--color-text);
  width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  border-radius: 50% !important; margin: 0 0.25rem; box-shadow: var(--shadow-sm); font-weight: 600;
}
.pagination .page-item.active .page-link { background: var(--color-primary); color: #fff; }
.pagination .page-item.disabled .page-link { opacity: 0.4; box-shadow: none; }