/* ============================================
   RECURSOS - VARIABLES ESPECÍFICAS
   ============================================ */

.resources-section {
   --card-radius: var(--radius-md, 8px);
   --card-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1));
   --card-padding: var(--spacing-md, 1rem);
}

/* ============================================
   HERO / TÍTULO
   ============================================ */

.resources-hero {
   background-color: var(--color-primary);
   color: var(--color-bg-alt);
   padding: var(--spacing-3xl) var(--spacing-md);
   text-align: center;
}

.resources-hero__title {
   font-family: var(--font-serif);
   font-size: var(--text-2xl);
   color: var(--color-bg-alt);
   margin-bottom: var(--spacing-sm);
}

.resources-hero__subtitle {
   font-family: var(--font-sans);
   font-size: var(--text-base);
   color: var(--color-bg-alt);
   opacity: 0.85;
   max-width: 600px;
   margin: 0 auto;
}

/* ============================================
   LAYOUT PRINCIPAL
   ============================================ */

.resources-section__container {
   max-width: 1400px;
   margin: 0 auto;
   padding: var(--spacing-lg) var(--spacing-md);
}

.resources-section__title {
   font-family: var(--font-serif);
   font-size: var(--text-2xl);
   color: var(--color-primary);
   text-align: center;
   margin-bottom: var(--spacing-xs);
}

.resources-section__subtitle {
   font-family: var(--font-sans);
   color: var(--color-text-secondary);
   text-align: center;
   margin-bottom: var(--spacing-xl);
}

/* ============================================
   TOOLBAR: BÚSQUEDA
   ============================================ */

.resources-toolbar {
   display: flex;
   flex-direction: column;
   gap: var(--spacing-md);
   margin-bottom: var(--spacing-xl);
}

.resources-toolbar__search {
   position: relative;
   width: 100%;
}

.resources-toolbar__search-icon {
   position: absolute;
   left: var(--spacing-md);
   top: 50%;
   transform: translateY(-50%);
   color: var(--color-text-secondary);
   pointer-events: none;
}

.resources-toolbar__search-input {
   width: 100%;
   padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.75rem;
   border: 2px solid var(--color-text-secondary);
   border-radius: var(--card-radius);
   font-family: var(--font-sans);
   font-size: var(--text-base);
   color: var(--color-text);
   background: var(--color-bg-alt);
   transition: border-color var(--transition-fast);
   min-height: 44px;
}

.resources-toolbar__search-input:focus {
   outline: none;
   border-color: var(--color-accent);
   box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.2);
}

.resources-toolbar__search-input::placeholder {
   color: var(--color-text-secondary);
}

/* ============================================
   RESULTADOS RESUMEN
   ============================================ */

.results-summary {
   font-family: var(--font-sans);
   font-size: var(--text-sm);
   color: var(--color-text-secondary);
   margin-bottom: var(--spacing-lg);
   text-align: center;
}

.results-summary:focus {
   outline: none;
}

/* ============================================
   GRID DE VIDEOS
   ============================================ */

.video-grid {
   display: grid;
   grid-template-columns: 1fr;
   gap: var(--spacing-lg);
   margin-bottom: var(--spacing-xl);
   min-height: 200px;
}

@media (min-width: 768px) {
   .video-grid {
      grid-template-columns: repeat(2, 1fr);
   }
}

@media (min-width: 1024px) {
   .video-grid {
      grid-template-columns: repeat(3, 1fr);
   }
}

@media (min-width: 1440px) {
   .video-grid {
      grid-template-columns: repeat(4, 1fr);
   }
}

/* ============================================
   VIDEO CARD
   ============================================ */

.video-card {
   background: var(--color-bg-alt);
   border-radius: var(--card-radius);
   box-shadow: var(--card-shadow);
   overflow: hidden;
   display: flex;
   flex-direction: column;
   transition: transform var(--transition-fast),
               box-shadow var(--transition-fast);
}

.video-card:hover,
.video-card:focus-within {
   transform: translateY(-2px);
   box-shadow: var(--shadow-md);
}

.video-card__thumbnail-container {
   position: relative;
   aspect-ratio: 16 / 9;
   overflow: hidden;
   background: var(--color-bg-main);
}

.video-card__thumbnail {
   width: 100%;
   height: 100%;
   object-fit: cover;
}

.video-card__thumbnail-placeholder {
   width: 100%;
   height: 100%;
   display: flex;
   align-items: center;
   justify-content: center;
   color: var(--color-text-secondary);
   background: var(--color-bg-main);
}

.video-card__duration {
   position: absolute;
   bottom: var(--spacing-xs);
   right: var(--spacing-xs);
   background: rgba(0, 0, 0, 0.75);
   color: #fff;
   padding: 2px 6px;
   border-radius: 4px;
   font-size: var(--text-xs);
   font-family: var(--font-sans);
}

.video-card__content {
   padding: var(--card-padding);
   flex: 1;
}

.video-card__title {
   font-family: var(--font-serif);
   font-size: var(--text-lg);
   color: var(--color-primary);
   margin: 0 0 var(--spacing-xs);
   display: -webkit-box;
   -webkit-line-clamp: 2;
   -webkit-box-orient: vertical;
   overflow: hidden;
   text-overflow: ellipsis;
}

.video-card__description {
   font-family: var(--font-sans);
   font-size: var(--text-sm);
   color: var(--color-text);
   margin: 0 0 var(--spacing-sm);
   display: -webkit-box;
   -webkit-line-clamp: 3;
   -webkit-box-orient: vertical;
   overflow: hidden;
   text-overflow: ellipsis;
}

.video-card__meta {
   display: flex;
   flex-wrap: wrap;
   gap: var(--spacing-xs);
   font-family: var(--font-sans);
   font-size: var(--text-xs);
   color: var(--color-text-secondary);
   align-items: center;
}

.video-card__category {
   background: var(--color-bg-main);
   padding: 2px 8px;
   border-radius: 12px;
   font-weight: 500;
}

.video-card__actions {
   padding: 0 var(--card-padding) var(--card-padding);
}

.video-card__download-btn {
   display: inline-flex;
   align-items: center;
   gap: var(--spacing-xs);
   padding: var(--spacing-sm) var(--spacing-md);
   background: var(--color-primary);
   color: var(--color-bg-alt);
   border-radius: var(--card-radius);
   font-family: var(--font-sans);
   font-size: var(--text-sm);
   font-weight: 500;
   text-decoration: none;
   transition: background var(--transition-fast);
   min-height: 44px;
}

.video-card__download-btn:hover,
.video-card__download-btn:focus {
   background: var(--color-accent);
   color: var(--color-primary);
}

.video-card__download-btn:focus-visible {
   outline: 2px solid var(--color-accent);
   outline-offset: 2px;
}

/* ============================================
   SKELETON LOADING
   ============================================ */

.video-card--skeleton {
   pointer-events: none;
}

.video-card--skeleton .video-card__thumbnail,
.video-card--skeleton .video-card__title,
.video-card--skeleton .video-card__description {
   background: linear-gradient(
      90deg,
      var(--color-bg-main) 0%,
      var(--color-bg-alt) 50%,
      var(--color-bg-main) 100%
   );
   background-size: 200% 100%;
   animation: skeleton-loading 1.5s infinite;
   border-radius: 4px;
}

.video-card--skeleton .video-card__title {
   height: 1.2em;
   width: 80%;
}

.video-card--skeleton .video-card__description {
   height: 1em;
   width: 100%;
}

@keyframes skeleton-loading {
   0% { background-position: 200% 0; }
   100% { background-position: -200% 0; }
}

/* ============================================
   STATUS MESSAGES
   ============================================ */

.status-message {
   text-align: center;
   padding: var(--spacing-xl);
   font-family: var(--font-sans);
}

.status-message--empty {
   color: var(--color-text-secondary);
}

.status-message--error {
   color: #c0392b;
   background: #fdecea;
   border-radius: var(--card-radius);
}

.status-message__reset-btn,
.status-message__retry-btn {
   margin-top: var(--spacing-md);
   padding: var(--spacing-sm) var(--spacing-lg);
   background: var(--color-primary);
   color: var(--color-bg-alt);
   border: none;
   border-radius: var(--card-radius);
   font-family: var(--font-sans);
   font-size: var(--text-base);
   cursor: pointer;
   min-height: 44px;
   transition: background var(--transition-fast);
}

.status-message__reset-btn:hover,
.status-message__retry-btn:hover {
   background: var(--color-accent);
   color: var(--color-primary);
}

.status-message__reset-btn:focus-visible,
.status-message__retry-btn:focus-visible {
   outline: 2px solid var(--color-accent);
   outline-offset: 2px;
}

/* ============================================
   PAGINACIÓN
   ============================================ */

.pagination-container {
   display: flex;
   justify-content: center;
   margin-top: var(--spacing-xl);
}

.pagination {
   display: flex;
   align-items: center;
   gap: var(--spacing-sm);
   font-family: var(--font-sans);
   flex-wrap: wrap;
   justify-content: center;
}

.pagination__btn,
.pagination__page {
   padding: var(--spacing-xs) var(--spacing-sm);
   border: 1px solid var(--color-text-secondary);
   border-radius: var(--card-radius);
   background: var(--color-bg-alt);
   color: var(--color-text);
   font-size: var(--text-sm);
   cursor: pointer;
   transition: all var(--transition-fast);
   min-height: 44px;
   min-width: 44px;
   display: inline-flex;
   align-items: center;
   justify-content: center;
}

.pagination__btn:disabled {
   opacity: 0.4;
   cursor: not-allowed;
}

.pagination__page--active {
   background: var(--color-primary);
   color: var(--color-bg-alt);
   border-color: var(--color-primary);
}

.pagination__btn:hover:not(:disabled),
.pagination__page:hover:not(.pagination__page--active) {
   border-color: var(--color-accent);
   color: var(--color-primary);
}

.pagination__btn:focus-visible,
.pagination__page:focus-visible {
   outline: 2px solid var(--color-accent);
   outline-offset: 2px;
}

.pagination__ellipsis {
   padding: 0 var(--spacing-xs);
   color: var(--color-text-secondary);
   user-select: none;
}

.pagination__pages {
   display: flex;
   gap: var(--spacing-xs);
}

/* ============================================
   NOSCRIPT FALLBACK
   ============================================ */

.noscript-fallback {
   max-width: 800px;
   margin: var(--spacing-xl) auto;
   padding: var(--spacing-lg);
   text-align: center;
}

.noscript-fallback h2 {
   text-align: center;
}

.noscript-video-list {
   list-style: none;
   padding: 0;
   text-align: left;
}

.noscript-video-list li {
   padding: var(--spacing-sm) 0;
   border-bottom: 1px solid var(--color-bg-main);
}

.noscript-video-list a {
   color: var(--color-primary);
   text-decoration: underline;
}

.noscript-video-list a:hover {
   color: var(--color-accent);
}

/* ============================================
   RESPONSIVE - TABLET
   ============================================ */

@media (min-width: 768px) {
   .resources-hero {
      padding: var(--spacing-3xl) var(--spacing-xl);
   }

   .resources-hero__title {
      font-size: var(--text-3xl);
   }

   .resources-toolbar {
      flex-direction: row;
      align-items: center;
   }

   .resources-toolbar__search {
      flex: 1;
   }
}

/* ============================================
   RESPONSIVE - DESKTOP
   ============================================ */

@media (min-width: 1024px) {
   .resources-hero__title {
      font-size: var(--text-4xl);
   }
}