/* ==========================================================================
   Gold Academy — Course catalog
   Hero search, filter sidebar (drawer on small screens), results bar,
   course cards (grid / list), load more, empty / error states.
   ========================================================================== */

/* ---------- Hero search ---------- */
.catalog-hero { padding-bottom: clamp(2.5rem, 2rem + 2vw, 3.5rem); }
.hero-search {
  position: relative; display: flex; align-items: center; gap: var(--sp-2);
  max-width: 720px; margin-top: var(--sp-6);
  padding: 6px; padding-inline-start: 52px;
  background: #fff; border-radius: var(--r-pill);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, .55);
}
[data-bs-theme="dark"] .hero-search { background: var(--c-surface); border: 1px solid var(--c-line); }
.hero-search-icon { position: absolute; inset-inline-start: 20px; width: 22px; height: 22px; color: var(--c-text-soft); }
.hero-search-input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  font: inherit; font-size: var(--fs-md); color: var(--c-text); padding: .55rem 0;
}
.hero-search-input::placeholder { color: var(--c-text-soft); }
.hero-search-input::-webkit-search-cancel-button { display: none; }
.hero-search:focus-within { box-shadow: 0 0 0 4px rgba(220, 175, 90, .45), 0 18px 40px -20px rgba(0, 0, 0, .55); }
.hero-search-clear {
  width: 34px; height: 34px; border-radius: 50%; border: 0; display: grid; place-items: center;
  background: var(--c-surface-2); color: var(--c-text-muted);
}
.hero-search-clear[hidden] { display: none; }
.hero-search .btn { border-radius: var(--r-pill); padding-inline: 1.6rem; }
.hero-quick { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); margin-top: var(--sp-4); font-size: var(--fs-sm); }
.hero-quick span { color: rgba(244, 239, 228, .6); margin-inline-end: var(--sp-1); }
.hero-quick a {
  color: rgba(244, 239, 228, .9); text-decoration: none; padding: .25rem .8rem; border-radius: var(--r-pill);
  border: 1px solid rgba(244, 239, 228, .2); transition: all var(--dur-fast) var(--ease);
}
.hero-quick a:hover { background: var(--gold-400); border-color: var(--gold-400); color: var(--navy-900); }

/* ---------- Layout ---------- */
.catalog-layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: var(--sp-8); align-items: start; }

/* ---------- Filters panel ---------- */
@media (min-width: 992px) {
  .filters {
    position: sticky; top: calc(var(--header-h) + var(--sp-4));
    max-height: calc(100vh - var(--header-h) - var(--sp-8));
    display: flex; flex-direction: column;
    background-color: var(--c-surface) !important;   /* Bootstrap offcanvas-lg sets it transparent */
    border: 1px solid var(--c-line); border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
  }
  .filters-body { overflow-y: auto; scrollbar-width: thin; }
}
.filters-head {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--c-line);
}
.filters-title { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-base); margin: 0; flex: 1; }
.filters-title .icon { color: var(--c-accent-ink); }
.filters-reset {
  border: 0; background: none; padding: .25rem .5rem; border-radius: var(--r-sm);
  font-size: var(--fs-sm); font-weight: 600; color: var(--c-danger);
}
.filters-reset:hover { background: var(--c-danger-soft); }
.filters-reset[hidden] { display: none; }
.filters-body { padding: 0 var(--sp-5); }
.facet { border: 0; margin: 0; padding: 0 0 var(--sp-5); min-width: 0; }
.facet + .facet { border-top: 1px solid var(--c-line); }
.facet[hidden] { display: none; }
.facet legend { float: none; font-size: var(--fs-sm); font-weight: 700; line-height: 1.4; color: var(--c-heading); margin-bottom: var(--sp-3); padding: var(--sp-5) 0 0; }
.facet-list { display: grid; gap: 2px; }
.facet-list--scroll {
  max-height: 236px; overflow-y: auto; margin-inline-end: calc(-1 * var(--sp-2)); padding-inline-end: var(--sp-2); padding-bottom: var(--sp-5); scrollbar-width: thin;
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
          mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
}
.facet-search { margin-bottom: var(--sp-2); border-radius: var(--r-md); }

.facet-option {
  position: relative; display: flex; align-items: center; gap: var(--sp-2);
  padding: .4rem .5rem; border-radius: var(--r-sm); cursor: pointer;
  font-size: var(--fs-sm); color: var(--c-text);
  transition: background-color var(--dur-fast) var(--ease);
}
.facet-option:hover { background: var(--c-surface-2); }
.facet-option[hidden] { display: none; }
.facet-option.is-empty { cursor: default; opacity: .5; }
.facet-input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.facet-check {
  width: 18px; height: 18px; flex-shrink: 0; border-radius: 5px;
  border: 1.5px solid var(--c-text-soft); background: var(--c-surface);
  display: grid; place-items: center; transition: all var(--dur-fast) var(--ease);
}
.facet-input[type="radio"] + .facet-check { border-radius: 50%; }
.facet-input:checked + .facet-check { background: var(--navy-800); border-color: var(--navy-800); }
.facet-input:checked + .facet-check::after {
  content: ""; width: 9px; height: 5px; margin-top: -2px;
  border: 2px solid #fff; border-top: 0; border-right: 0; transform: rotate(-45deg);
}
.facet-input[type="radio"]:checked + .facet-check::after { width: 8px; height: 8px; margin: 0; border: 0; border-radius: 50%; background: #fff; transform: none; }
[data-bs-theme="dark"] .facet-input:checked + .facet-check { background: var(--gold-400); border-color: var(--gold-400); }
[data-bs-theme="dark"] .facet-input:checked + .facet-check::after { border-color: var(--navy-900); }
[data-bs-theme="dark"] .facet-input[type="radio"]:checked + .facet-check::after { background: var(--navy-900); }
.facet-input:focus-visible + .facet-check { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.facet-input:checked ~ .facet-label { font-weight: 700; color: var(--c-heading); }
.facet-label { flex: 1; min-width: 0; }
.facet-count {
  font-size: var(--fs-xs); color: var(--c-text-soft); background: var(--c-surface-2);
  padding: 0 .5rem; border-radius: var(--r-pill); min-width: 28px; text-align: center;
}
.facet-icon { color: var(--c-accent-ink); }
.facet-avatar {
  width: 28px; height: 28px; border-radius: 50%; object-fit: cover; flex-shrink: 0;
  display: inline-grid; place-items: center; font-size: var(--fs-xs); font-weight: 700;
  background: var(--navy-100); color: var(--navy-800);
}

/* price: two native range inputs over one track */
.price-values { display: flex; justify-content: space-between; font-size: var(--fs-sm); color: var(--c-text-muted); margin-bottom: var(--sp-3); }
.price-values b { color: var(--c-heading); font-size: var(--fs-base); }
.price-track { position: relative; height: 24px; }
.price-track::before { content: ""; position: absolute; inset-inline: 0; top: 10px; height: 4px; border-radius: 4px; background: var(--c-surface-2); }
.price-fill { position: absolute; top: 10px; height: 4px; border-radius: 4px; background: var(--gold-400); }
.price-track input[type="range"] {
  position: absolute; inset: 0; width: 100%; margin: 0; background: none;
  -webkit-appearance: none; appearance: none; pointer-events: none;
}
.price-track input[type="range"]::-webkit-slider-runnable-track { background: none; height: 24px; }
.price-track input[type="range"]::-moz-range-track { background: none; }
.price-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; pointer-events: auto; cursor: pointer;
  width: 20px; height: 20px; margin-top: 2px; border-radius: 50%;
  background: var(--c-surface); border: 3px solid var(--gold-500); box-shadow: var(--shadow-sm);
}
.price-track input[type="range"]::-moz-range-thumb {
  pointer-events: auto; cursor: pointer; width: 14px; height: 14px; border-radius: 50%;
  background: var(--c-surface); border: 3px solid var(--gold-500);
}
.price-track input[type="range"]:focus-visible { outline: none; }
.price-track input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px rgba(220, 175, 90, .4); }

/* ---------- Results bar ---------- */
.results:focus { outline: none; }
.results-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--sp-3); margin-bottom: var(--sp-4); }
.results-count { margin: 0; color: var(--c-text-muted); }
.results-count strong { color: var(--c-heading); font-size: var(--fs-md); }
.results-tools { display: flex; align-items: center; gap: var(--sp-2); }
.results-tools .form-select { width: auto; min-width: 180px; padding-block: .5rem; }
.filters-badge { display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 .35rem; border-radius: var(--r-pill); background: var(--gold-400); color: var(--navy-900); font-size: var(--fs-xs); font-weight: 700; }
.filters-badge[hidden] { display: none; }
.view-toggle { display: inline-flex; border: 1px solid var(--c-line-strong); border-radius: var(--r-md); overflow: hidden; }
.view-toggle button { border: 0; background: var(--c-surface); color: var(--c-text-muted); width: 42px; height: 42px; display: grid; place-items: center; }
.view-toggle button + button { border-inline-start: 1px solid var(--c-line-strong); }
.view-toggle button[aria-pressed="true"] { background: var(--navy-800); color: #fff; }
[data-bs-theme="dark"] .view-toggle button[aria-pressed="true"] { background: var(--gold-400); color: var(--navy-900); }

.active-filters { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-5); }
.active-filters[hidden] { display: none; }
.af-chip {
  display: inline-flex; align-items: center; gap: var(--sp-1);
  border: 1px solid var(--gold-300); background: var(--c-accent-soft); color: var(--c-heading);
  font-size: var(--fs-sm); font-weight: 600; padding-block: .3rem; padding-inline: .75rem .5rem; border-radius: var(--r-pill);
  transition: all var(--dur-fast) var(--ease);
}
.af-chip .icon { color: var(--c-text-soft); }
.af-chip:hover { border-color: var(--c-danger); }
.af-chip:hover .icon { color: var(--c-danger); }
.af-clear { border: 0; background: none; font-size: var(--fs-sm); font-weight: 600; color: var(--c-danger); text-decoration: underline; padding: .3rem .5rem; }

/* ---------- Course cards ---------- */
.course-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-5); }
.ccard {
  --cover: #2a4f8c; --cover-ink: #fff;
  position: relative; display: flex; flex-direction: column;
  background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  animation: cardIn var(--dur) var(--ease) both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.ccard--secondary  { --cover: #1f3d6e; }
.ccard--tawjihi    { --cover: linear-gradient(150deg, #e7c172, #c4943a); --cover-ink: var(--navy-900); }
.ccard--university { --cover: var(--navy-900); }
.ccard:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--c-line-strong); }
.ccard .stretched-link:focus-visible { outline: none; }
.ccard .stretched-link:focus-visible::after { outline: 3px solid var(--c-focus); outline-offset: 3px; border-radius: var(--r-lg); }
.ccard-teacher:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 2px; border-radius: 4px; }

.ccard-cover {
  position: relative; height: 128px; flex-shrink: 0;
  background: var(--cover); color: var(--cover-ink);
  border-radius: calc(var(--r-lg) - 1px) calc(var(--r-lg) - 1px) 0 0;
  padding: var(--sp-3) var(--sp-4);
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-2);
}
/* faint rings behind the subject icon */
.ccard-cover::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(circle at 46px calc(100% - 42px), transparent 0 34px, rgba(255, 255, 255, .14) 35px 36px, transparent 37px 58px, rgba(255, 255, 255, .08) 59px 60px, transparent 61px);
}
.ccard-stage, .ccard-grade { position: relative; font-size: var(--fs-xs); font-weight: 700; }
.ccard-stage { background: rgba(255, 255, 255, .16); padding: .15rem .6rem; border-radius: var(--r-pill); }
.ccard--tawjihi .ccard-stage { background: rgba(15, 27, 51, .12); }
.ccard-grade { opacity: .9; }
.ccard-icon { position: absolute; left: 22px; bottom: 18px; width: 48px; height: 48px; }
.ccard-avatar {
  position: absolute; right: var(--sp-4); bottom: -26px; z-index: 1;
  width: 56px; height: 56px; border-radius: 50%; object-fit: cover;
  border: 3px solid var(--c-surface); box-shadow: var(--shadow-sm);
  display: grid; place-items: center; font-weight: 700; background: var(--navy-100); color: var(--navy-800);
}
.ccard-body { display: flex; flex-direction: column; flex: 1; padding: 34px var(--sp-4) var(--sp-4); }
.ccard-teacher {
  position: relative; z-index: 2; align-self: flex-start;
  font-size: var(--fs-sm); font-weight: 600; color: var(--c-accent-ink); text-decoration: none;
}
.ccard-teacher:hover { text-decoration: underline; color: var(--c-heading); }
.ccard-title { font-size: var(--fs-lg); margin: var(--sp-1) 0 0; }
.ccard-title a { color: inherit; text-decoration: none; }
.ccard-sub { font-size: var(--fs-sm); color: var(--c-text-muted); margin: 0 0 var(--sp-3); }
.ccard-stats { list-style: none; padding: 0; margin: 0 0 var(--sp-4); display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-1) var(--sp-3); font-size: var(--fs-xs); color: var(--c-text-muted); }
.ccard-stats li { display: flex; align-items: center; gap: var(--sp-1); }
.ccard-stats .icon { color: var(--c-accent-ink); }
.ccard-foot { margin-top: auto; padding-top: var(--sp-3); border-top: 1px solid var(--c-line); display: flex; align-items: center; justify-content: space-between; }
.ccard-price { font-size: var(--fs-sm); color: var(--c-text-muted); }
.ccard-price strong { font-size: var(--fs-xl); color: var(--c-heading); margin-inline-end: 2px; }
.ccard-cta { display: inline-flex; align-items: center; gap: var(--sp-1); font-size: var(--fs-sm); font-weight: 700; color: var(--c-accent-ink); }
.ccard-cta .icon { transition: transform var(--dur-fast) var(--ease); }
.ccard:hover .ccard-cta .icon { transform: translateX(-3px); }

/* list view (≥ 768px) */
@media (min-width: 768px) {
  .course-grid[data-view="list"] { grid-template-columns: 1fr; gap: var(--sp-4); }
  .course-grid[data-view="list"] .ccard { flex-direction: row; }
  .course-grid[data-view="list"] .ccard-cover { width: 220px; height: auto; min-height: 168px; flex-direction: column; border-radius: 0 calc(var(--r-lg) - 1px) calc(var(--r-lg) - 1px) 0; }
  .course-grid[data-view="list"] .ccard-avatar { bottom: auto; top: 50%; right: auto; left: -28px; transform: translateY(-50%); }
  .course-grid[data-view="list"] .ccard-body { padding: var(--sp-4) var(--sp-5); padding-left: var(--sp-5); padding-right: 44px; }
  .course-grid[data-view="list"] .ccard-stats { grid-template-columns: repeat(4, auto); justify-content: start; gap: var(--sp-4); }
}

/* skeletons */
.course-skel {
  height: 360px; border-radius: var(--r-lg);
  background: linear-gradient(90deg, var(--c-surface-2) 25%, var(--c-line) 50%, var(--c-surface-2) 75%);
  background-size: 200% 100%; animation: shimmer 1.2s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Load more / empty / error ---------- */
.load-more { text-align: center; margin-top: var(--sp-8); }
.load-more[hidden] { display: none; }
.load-more-info { font-size: var(--fs-sm); color: var(--c-text-muted); margin-bottom: var(--sp-2); }
.load-more-bar { width: 200px; height: 4px; margin: 0 auto var(--sp-4); border-radius: 4px; background: var(--c-surface-2); overflow: hidden; }
.load-more-bar span { display: block; height: 100%; background: var(--gold-400); transition: inline-size var(--dur) var(--ease); }
.load-more .btn[hidden] { display: none; }
.empty-state {
  text-align: center; padding: var(--sp-12) var(--sp-5);
  background: var(--c-surface); border: 1px dashed var(--c-line-strong); border-radius: var(--r-lg);
}
.empty-state[hidden] { display: none; }
.empty-state .icon-tile { margin-bottom: var(--sp-3); }
.empty-state h3 { font-size: var(--fs-md); }
.empty-state p { color: var(--c-text-muted); max-width: 46ch; margin-inline: auto; }
.load-error { padding: var(--sp-4) var(--sp-5); border-radius: var(--r-md); background: var(--c-danger-soft); color: var(--c-danger); font-weight: 600; }
.load-error[hidden] { display: none; }
.load-error .btn-link { padding: 0; border: 0; background: none; color: inherit; text-decoration: underline; font-weight: 700; }

/* ---------- Help strip ---------- */
.help-strip {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-6); border-radius: var(--r-lg);
  background: var(--c-surface-2); border: 1px solid var(--c-line);
}
.help-strip > div { flex: 1 1 260px; }
.help-strip strong { color: var(--c-heading); }
.help-strip p { margin: 0; font-size: var(--fs-sm); color: var(--c-text-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 1399.98px) {
  .catalog-layout { grid-template-columns: 270px minmax(0, 1fr); gap: var(--sp-6); }
}
@media (max-width: 1199.98px) {
  .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 991.98px) {
  .catalog-layout { grid-template-columns: 1fr; }
  .filters { --bs-offcanvas-width: min(380px, 92vw); }
  .filters .filters-body { overflow-y: auto; flex: 1; }
  .filters-foot { padding: var(--sp-4) var(--sp-5); border-top: 1px solid var(--c-line); background: var(--c-surface); }
  .results-bar {
    position: sticky; top: var(--header-h); z-index: 5;
    margin-inline: calc(-1 * var(--bs-gutter-x) * .5); padding: var(--sp-3) calc(var(--bs-gutter-x) * .5);
    background: color-mix(in srgb, var(--c-bg) 94%, transparent);
    -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  }
}
@media (max-width: 767.98px) {
  .results-bar { position: static; margin-inline: 0; padding: 0; background: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .hero-search { padding-inline-start: 44px; }
  .hero-search-icon { inset-inline-start: 16px; }
  .hero-search .btn { padding-inline: 1rem; }
  .results-tools { width: 100%; }
  .results-tools .form-select { flex: 1; min-width: 0; }
  .view-toggle { display: none; }
}
@media (max-width: 575.98px) {
  .course-grid { grid-template-columns: 1fr; gap: var(--sp-4); }
  .help-strip .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .ccard { animation: none; }
  .course-skel { animation: none; }
}