*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  --color-background: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-neural: #767676;
  --color-text: #2D3748;
  --color-primary: #1E4D7B;
  --color-accent: #F59E0B;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--color-text);
  background-color: var(--color-background);
}

.font-heading {
  font-family: 'Poppins', sans-serif;
}

.bg-surface { background-color: var(--color-surface); }
.text-primary-custom { color: var(--color-primary); }
.bg-primary-custom { background-color: var(--color-primary); }
.bg-accent { background-color: var(--color-accent); }
.text-accent { color: var(--color-accent); }

.card-hover {
  transition: transform .25s ease, box-shadow .25s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(30,77,123,.12);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #fff;
  border: none;
}

.btn-accent:hover {
  background-color: #D97706;
  color: #fff;
}

.btn-primary-custom {
  background-color: var(--color-primary);
  color: #fff;
  border: none;
}

.btn-primary-custom:hover {
  background-color: #163A5F;
  color: #fff;
}

.hero-illustration {
  /* background: linear-gradient(
    135deg,
    rgba(30,77,123,.05),
    rgba(245,158,11,.05)
  ); */
  background: linear-gradient(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.8)), url('../img/img_jumbo.png') no-repeat center center;
  background-size: cover;
}

hr {
 color: var(--color-neural); 
}

.nav-link {
  font-weight: 500;
  color: var(--color-text);
}

.nav-link:hover {
  color: var(--color-primary);
}

.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 12px;
}

.icon-box-lg {
  width: 64px;
  height: 64px;
  border-radius: 16px;
}

/* Navbar search */
.nav-search {
  display: flex;
  align-items: center;
}

.nav-search .form-control {
  min-width: 220px;
}

.nav-search .btn {
  white-space: nowrap;
}

.breadcrumb {
  font-size: 0.75rem;
}

.breadcrumb a,
.breadcrumb span {
  font-size: inherit;
}

@media (max-width: 576px) {
  .nav-search {
    width: 100%;
    padding-top: 0.5rem;
    flex-direction: row;
    gap: .5rem;
  }

  .nav-search .form-control {
    min-width: 0;
    flex: 1 1 auto;
  }
}

.category-sidebar {
  max-height: 65vh;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 0.25rem;
}

.category-sidebar .list-group-item {
  border-radius: 0;
}

.category-sidebar .list-group-item.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.scrolltop {
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: #F59E0B;
  border-radius: 50%;
  color: #ffffff;
  display: flex;
  font-size: 20px;
  z-index: 20;
  cursor: pointer;
  text-align: center;
  padding: 4px;
  position: fixed;
  -webkit-box-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  align-items: center;
  transition: opacity 0.4s ease, transform 0.4s ease;
  visibility: hidden;
}

.scrolltop:hover {
  background: #4CC0D9;
  opacity: 100%;
  transform: translateY(-3px);
}

.search-result {
  list-style: none;
  padding: 0;
}

.search-content {
  display: grid;
  grid-template-columns: 1fr minmax(10px,.2fr);
  gap: 5cqi;
}

/* Material Class */

.material-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.material-result {
  list-style: none;
  padding: 0;
  margin: 0;
}

.material-view-grid .material-result {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.material-view-grid .material-result > .material-lists {
  flex: 0 0 calc(50% - 0.5rem);
  max-width: calc(50% - 0.5rem);
}

.material-view-list .material-result {
  display: block;
}

.material-view-list .material-result > .material-lists {
  flex: 0 0 100%;
  max-width: 100%;
}

.material-lists {
  list-style: none;
  padding: auto;
}

.material-list-cat {
  font-size: 0.7rem;
  color: var(--color-neural);
}

.material-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.material-content-txt {
  text-align: left;
}

.material-item {
    flex: 0 0 calc(50% - 0.5rem);
    max-width: calc(50% - 0.5rem);
}

/* .search-content-txt {

} */
.material-content-img {
  order: -1;
  inline-size: 100%;
  /* max-inline-size: 180px; */
  max-inline-size: 100%;
  block-size: auto;
  aspect-ratio: 16/9;
}

.material-content-icon {
  order: -1;
  inline-size: 100%;
  max-inline-size: 100%;
  block-size: auto;
  aspect-ratio: 16/9;
  border-radius: 0.375rem;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f0f0f0;
}

@media (max-width: 767px) {
  .search-content {
    grid-template-columns: 1fr;
  }

  .material-content {
    grid-template-columns: 1fr;
  }

  .material-content-img {
    order: -1;
    inline-size: 100%;
    max-inline-size: none;  
  
  }
  
  .material-view-grid .material-result > .material-lists {
      flex: 0 0 100%;
      max-width: 100%;
  }
  
  .material-item {
      flex: 0 0 100%;
      max-width: 100%;
  }
}

.material-content-img > img {
  display: block;
  border-radius: 8px;
  width: 100%;
}

.nav-search {
  position: relative;
}

.nav-search .search-icon {
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: #6b6f83;
}

.nav-search input.form-control-sm {
  padding-left: 2rem;
}

.search-content-img {
  inline-size: 100%;
  block-size: auto;
  aspect-ratio: 16/9;
}

.search-content-img > img {
  display: block;
  border-radius: 8px;
  width: 100%;
}

.search-lists {
  container-type: inline-size;
  /* border-bottom: 1px solid #dee2e6; */
}

.search-list-cat {
  font-size: 13px;
  color: var(--color-neural);
}

.category-view-toggle .btn.active {
    background-color: var(--bs-primary, #0d6efd);
    color: #fff;
    border-color: var(--bs-primary, #0d6efd);
}

.categories-view-list .category-item {
      flex: 0 0 100%;
      max-width: 100%;
}

.categories-view-list .card {
    flex-direction: row;
    align-items: center;
}

.categories-view-list .card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: center;
}

.categories-view-list .card-title {
    margin-bottom: 0.25rem;
}

@media (max-width: 576px) {
    .category-view-toggle {
        display: flex !important;
        justify-content: flex-end;
    }

    .categories-view-list .card {
        flex-direction: column;
        align-items: flex-start;
    }
}