/* Impact Page Styles — css/impact.css */

/* 1. Featured Post
   ========================================================================== */

.featured-post-section {
  padding-block: var(--space-20);
}

.featured-post {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.featured-post__loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16);
  color: rgba(26,26,46,0.4);
  font-size: var(--text-md);
}

.featured-post__image-wrap {
  display: block;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.featured-post__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.featured-post__image-wrap:hover .featured-post__image {
  transform: scale(1.03);
}

.featured-post__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.featured-post__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  line-height: var(--leading-tight);
}

.featured-post__title a {
  color: var(--color-dark);
  transition: color var(--transition-fast);
}

.featured-post__title a:hover {
  color: var(--color-green);
}

.featured-post__excerpt {
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  color: rgba(26,26,46,0.75);
}

.featured-post__date {
  font-size: var(--text-sm);
  color: rgba(26,26,46,0.5);
}

.featured-post__link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-green);
  transition: color var(--transition-fast);
}

.featured-post__link:hover {
  color: var(--color-green-dark);
}

.featured-post__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16);
  color: rgba(26,26,46,0.5);
  font-size: var(--text-lg);
}

@media (max-width: 768px) {
  .featured-post {
    grid-template-columns: 1fr;
  }
}

/* 2. Tag Pills
   ========================================================================== */

.tag-pill {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tag-pill--green {
  background-color: var(--color-green);
  color: var(--color-white);
}

.tag-pill--blue {
  background-color: var(--color-blue);
  color: var(--color-white);
}

.tag-pill--yellow {
  background-color: var(--color-yellow);
  color: var(--color-dark);
}

/* 3. Filter Bar
   ========================================================================== */

.filter-bar-section {
  background-color: var(--color-mint);
  padding-block: var(--space-5);
  position: sticky;
  top: var(--nav-height);
  z-index: var(--z-raised);
}

.filter-bar {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-1);
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-dark);
  background-color: transparent;
  color: var(--color-dark);
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-white);
}

.filter-btn--active {
  background-color: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-white);
}

/* 4. Card Grid
   ========================================================================== */

.impact-grid-section {
  padding-block: var(--space-16);
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.impact-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-white);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.impact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.impact-card__image-wrap {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  flex-shrink: 0;
}

.impact-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.impact-card__image-wrap:hover .impact-card__image {
  transform: scale(1.04);
}

.impact-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex-grow: 1;
}

.impact-card__title {
  font-size: var(--text-lg);
  line-height: var(--leading-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.impact-card__title a {
  color: var(--color-dark);
  transition: color var(--transition-fast);
}

.impact-card__title a:hover {
  color: var(--color-green);
}

.impact-card__excerpt {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: rgba(26,26,46,0.72);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.impact-card__date {
  font-size: var(--text-xs);
  color: rgba(26,26,46,0.5);
}

.impact-card__link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-green);
  transition: color var(--transition-fast);
  margin-top: auto;
}

.impact-card__link:hover {
  color: var(--color-green-dark);
}

.impact-grid__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-20);
  font-size: var(--text-lg);
  color: rgba(26,26,46,0.5);
}

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

@media (max-width: 480px) {
  .impact-grid {
    grid-template-columns: 1fr;
  }
}