/* Content Collection Page Styles
 * Covers header, search bar, article grid, pagination, and empty state.
 */

/* ===================================
   Page Container
   =================================== */

.collection-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* ===================================
   Header
   =================================== */

.collection-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.collection-header__top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.collection-header__title {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin: 0;
}

.collection-header__intro {
  font-size: 1.1rem;
  color: #666;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

/* RSS subscribe button */
.collection-rss-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: #f26522;
  color: #fff;
  font-size: 0.8rem;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity 0.15s ease;
}

.collection-rss-link:hover {
  opacity: 0.85;
}

/* ===================================
   Featured Article Card
   =================================== */

.featured-article {
  margin-bottom: 2.5rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.featured-article__link {
  display: grid;
  grid-template-columns: 1fr 1fr;
  text-decoration: none;
  color: inherit;
  min-height: 300px;
}

.featured-article__link:hover .featured-article__title {
  color: var(--primary-color);
}

.featured-article__image {
  background-size: cover;
  background-position: center;
  min-height: 260px;
}

.featured-article__image--placeholder {
  background: var(--neutral-light, #f0f0f0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: #ccc;
}

.featured-article__body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
  background: #fff;
}

.featured-article__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent, #ffb000);
  margin-bottom: 0.25rem;
}

.featured-article__categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.featured-article__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1.3;
  margin: 0;
  transition: color 0.15s ease;
}

.featured-article__subtitle {
  font-size: 0.95rem;
  color: #555;
  margin: 0;
}

.featured-article__excerpt {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-article__meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: #999;
  margin-top: 0.25rem;
}

.featured-article__meta-sep {
  color: #ccc;
}

@media (max-width: 700px) {
  .featured-article__link {
    grid-template-columns: 1fr;
  }

  .featured-article__image {
    min-height: 200px;
  }
}

/* ===================================
   Search Bar
   =================================== */

.collection-search {
  max-width: 520px;
  margin: 0 auto 0.75rem;
}

.collection-search__inner {
  position: relative;
  display: flex;
  align-items: center;
}

.collection-search__icon {
  position: absolute;
  left: 1rem;
  color: #aaa;
  font-size: 0.9rem;
  pointer-events: none;
}

.collection-search__input {
  width: 100%;
  padding: 0.7rem 2.75rem 0.7rem 2.5rem;
  border: 1.5px solid rgba(0, 0, 0, 0.12);
  border-radius: 24px;
  font-size: 0.95rem;
  background: #fff;
  color: #333;
  outline: none;
  transition: border-color 0.15s ease;
  appearance: none; /* remove browser search decoration */
}

.collection-search__input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(24, 105, 102, 0.12);
}

.collection-search__input::-webkit-search-cancel-button {
  display: none; /* we use our own clear button */
}

.collection-search__clear {
  position: absolute;
  right: 0.9rem;
  color: #aaa;
  font-size: 0.85rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 0.2rem;
  transition: color 0.15s ease;
}

.collection-search__clear:hover {
  color: #555;
}

.collection-search__results-label {
  font-size: 0.875rem;
  color: #777;
  margin: 0.5rem 0 0;
}

/* ===================================
   Articles Grid
   =================================== */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

/* ===================================
   Pagination
   =================================== */

.collection-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  text-decoration: none;
}

.collection-pagination a {
  text-decoration: none;
}

.collection-pagination__label {
  color: #666;
  font-size: 0.9rem;
}

/* ===================================
   Empty State
   =================================== */

.collection-empty {
  text-align: center;
  padding: 4rem 1rem;
}

.collection-empty__icon {
  font-size: 3.5rem;
  color: #ccc;
  display: block;
  margin-bottom: 1rem;
}

.collection-empty__text {
  color: #666;
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 600px) {
  .collection-header__title {
    font-size: 2rem;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }
}