/* ===== FEED AI PAGE STYLES ===== */
/* Stili specifici per la pagina feed-ai.html */

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-time {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-elegant);
}

.icon-btn:hover {
  background: var(--accent-primary);
  color: white;
  transform: scale(1.1);
}

.icon-btn.refresh:hover {
  transform: rotate(180deg) scale(1.1);
}

.icon-btn:active {
  animation: pulseRing 600ms var(--ease-elegant);
}

/* Main Content */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

.intro {
  text-align: center;
  margin-bottom: var(--space-10);
  animation: fadeInUp 600ms var(--ease-elegant);
}

.intro h1 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.intro p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

/* Category Cards */
.categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.category-card {
  background: var(--bg-secondary);
  border: 1px solid var(--divider);
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow var(--duration-medium) var(--ease-elegant);
  animation: fadeInUp 600ms var(--ease-elegant) backwards;
}

.category-card:nth-child(1) {
  animation-delay: 0ms;
}
.category-card:nth-child(2) {
  animation-delay: 100ms;
}
.category-card:nth-child(3) {
  animation-delay: 200ms;
}
.category-card:nth-child(4) {
  animation-delay: 300ms;
}
.category-card:nth-child(5) {
  animation-delay: 400ms;
}
.category-card:nth-child(6) {
  animation-delay: 500ms;
}
.category-card:nth-child(7) {
  animation-delay: 600ms;
}

.category-card:hover {
  box-shadow: var(--shadow-md);
}

/* Category Header */
.category-header {
  padding: var(--space-5) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--divider);
  transition: background var(--duration-fast) var(--ease-elegant);
}

.category-header:hover {
  background: var(--bg-tertiary);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.category-icon {
  font-size: var(--text-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.category-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.category-count {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-weight: 500;
  background: var(--bg-tertiary);
  padding: 4px 12px;
  border-radius: 12px;
}

.category-toggle {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: transform var(--duration-fast) var(--ease-elegant);
}

.category-card.expanded .category-toggle {
  transform: rotate(180deg);
}

/* Category Content */
.category-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-elegant);
}

.category-card.expanded .category-content {
  max-height: none;
}

/* News Grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-5);
  padding: var(--space-6);
}

/* News Card */
.news-card {
  background: var(--bg-primary);
  border: 1px solid var(--divider);
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--duration-medium) var(--ease-elegant);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent-border);
  transform: translateY(-4px);
}

.news-card-header {
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.news-source {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  flex: 1;
}

.news-time {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  white-space: nowrap;
}

.news-card-body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-footer {
  padding: var(--space-4);
  padding-top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}

.news-link {
  text-decoration: none;
  color: var(--accent-primary);
  font-weight: 600;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: all var(--duration-fast) var(--ease-elegant);
}

.news-link:hover {
  color: var(--accent-secondary);
  gap: var(--space-3);
}

/* Load More */
.load-more-wrapper {
  padding: var(--space-5) var(--space-6);
  text-align: center;
  border-top: 1px solid var(--divider);
  background: var(--bg-tertiary);
}

.btn-load-more {
  padding: var(--space-3) var(--space-6);
  border-radius: 9999px;
  border: 1.5px solid var(--accent-border);
  background: var(--bg-secondary);
  color: var(--accent-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: all var(--duration-medium) var(--ease-elegant);
}

.btn-load-more:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-load-more.hidden {
  display: none;
}

/* Loading State */
.loading-placeholder {
  padding: var(--space-8);
  text-align: center;
  color: var(--text-tertiary);
}

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Empty State */
.empty-state {
  padding: var(--space-10);
  text-align: center;
  color: var(--text-tertiary);
}

.empty-icon {
  font-size: var(--text-6xl);
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseRing {
  0% {
    box-shadow: 0 0 0 0 rgba(193, 165, 123, 0.7);
  }
  100% {
    box-shadow: 0 0 0 12px rgba(193, 165, 123, 0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .header-actions {
    gap: var(--space-2);
  }

  .header-time {
    display: none;
  }

  .container {
    padding: var(--space-6) var(--space-4);
  }

  .intro h1 {
    font-size: var(--text-2xl);
  }

  .intro p {
    font-size: var(--text-base);
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
  }

  .category-header {
    padding: var(--space-4);
  }

  .category-name {
    font-size: var(--text-lg);
  }
}