/**
 * BA Learning Hub - Main Styles
 * Glassmorphic design for blog
 *
 * @package BA_Learning_Hub
 * @since 1.0.0
 */

/* ============================================
   CSS VARIABLES
   ============================================ */

:root {
  /* Blog-specific colors */
  --ba-blog-bg: rgba(15, 23, 42, 0.6);
  --ba-blog-border: rgba(255, 255, 255, 0.1);
  --ba-blog-hover: rgba(255, 255, 255, 0.15);

  /* Category colors (from domain) */
  --ba-cat-optimizacion: #3B82F6;
  --ba-cat-ventas: #9333EA;
  --ba-cat-afip: #10B981;
  --ba-cat-conceptos: #EC4899;
  --ba-cat-tendencias: #6366F1;
  --ba-cat-casos: #F59E0B;

  /* Spacing */
  --ba-spacing-xs: 0.5rem;
  --ba-spacing-sm: 0.75rem;
  --ba-spacing-md: 1rem;
  --ba-spacing-lg: 1.5rem;
  --ba-spacing-xl: 2rem;
  --ba-spacing-2xl: 3rem;
  --ba-spacing-3xl: 4rem;

  /* Border radius */
  --ba-radius-sm: 0.5rem;
  --ba-radius-md: 0.75rem;
  --ba-radius-lg: 1rem;
  --ba-radius-xl: 1.5rem;
  --ba-radius-2xl: 2rem;
  --ba-radius-full: 9999px;

  /* Transitions */
  --ba-transition-fast: 150ms ease-in-out;
  --ba-transition-base: 200ms ease-in-out;
  --ba-transition-slow: 300ms ease-in-out;
  --ba-transition-bounce: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   GLASSMORPHIC COMPONENTS
   ============================================ */

.ba-glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-2xl);
}

.ba-glass-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-2xl);
  padding: var(--ba-spacing-lg);
  transition: all var(--ba-transition-bounce);
}

.ba-glass-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(147, 51, 234, 0.5);
  transform: scale(1.02) translateY(-5px);
  box-shadow: 0 20px 40px rgba(147, 51, 234, 0.2);
}

/* ============================================
   BLOG ARCHIVE - MAIN LAYOUT
   ============================================ */

.ba-blog-archive {
  padding: var(--ba-spacing-3xl) 0;
  min-height: 100vh;
}

.ba-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--ba-spacing-lg);
}

.ba-container-narrow {
  max-width: 768px;
  margin: 0 auto;
}

/* Blog Header */
.ba-blog-header {
  text-align: center;
  margin-bottom: var(--ba-spacing-3xl);
}

.ba-blog-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--ba-spacing-md);
  line-height: 1.1;
}

.ba-blog-subtitle {
  font-size: 1.25rem;
  color: #cbd5e1;
  max-width: 42rem;
  margin: 0 auto var(--ba-spacing-2xl);
  line-height: 1.6;
}

.ba-gradient-text {
  background: linear-gradient(135deg, #9333ea, #3b82f6, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Search Form */
.ba-search-form {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.ba-search-input {
  width: 100%;
  padding: 1rem 3rem 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-full);
  color: #ffffff;
  font-size: 1rem;
  transition: all var(--ba-transition-base);
}

.ba-search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(147, 51, 234, 0.5);
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.1);
}

.ba-search-input::placeholder {
  color: #94a3b8;
}

.ba-search-button {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: linear-gradient(135deg, #9333ea, #7c3aed);
  border: none;
  border-radius: var(--ba-radius-full);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--ba-transition-base);
}

.ba-search-button:hover {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  transform: translateY(-50%) scale(1.05);
}

.ba-search-button svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: #ffffff;
}

/* Blog Layout (Main + Sidebar) */
.ba-blog-layout {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: var(--ba-spacing-2xl);
  margin-top: var(--ba-spacing-3xl);
}

/* ============================================
   BLOG CARDS
   ============================================ */

.ba-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--ba-spacing-xl);
  margin-top: var(--ba-spacing-2xl);
}

.ba-blog-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-2xl);
  overflow: hidden;
  transition: all var(--ba-transition-bounce);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.ba-blog-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(147, 51, 234, 0.5);
  transform: scale(1.02) translateY(-5px);
  box-shadow: 0 20px 40px rgba(147, 51, 234, 0.2);
}

.ba-blog-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.2), rgba(59, 130, 246, 0.2));
}

.ba-blog-card-content {
  padding: var(--ba-spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ba-blog-category-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--ba-radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--ba-spacing-md);
  width: fit-content;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.ba-blog-meta {
  display: flex;
  align-items: center;
  gap: var(--ba-spacing-md);
  color: #94a3b8;
  font-size: 0.875rem;
  margin-bottom: var(--ba-spacing-md);
}

.ba-blog-meta-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.ba-blog-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--ba-spacing-sm);
  line-height: 1.4;
  flex: 1;
}

.ba-blog-card-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ba-transition-base);
}

.ba-blog-card-title a:hover {
  color: #c084fc;
}

.ba-blog-card-excerpt {
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: var(--ba-spacing-md);
  flex: 1;
}

.ba-blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #c084fc;
  font-weight: 600;
  text-decoration: none;
  transition: gap var(--ba-transition-base);
}

.ba-blog-read-more:hover {
  gap: 0.75rem;
}

/* ============================================
   FEATURED ARTICLE
   ============================================ */

.ba-blog-featured-article {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-2xl);
  overflow: hidden;
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 0;
  margin-bottom: var(--ba-spacing-2xl);
  transition: all var(--ba-transition-bounce);
}

.ba-blog-featured-article:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(147, 51, 234, 0.5);
  box-shadow: 0 25px 50px rgba(147, 51, 234, 0.2);
}

.ba-blog-featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 400px;
}

.ba-blog-featured-content {
  padding: var(--ba-spacing-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ba-blog-featured-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--ba-spacing-md);
  line-height: 1.2;
}

.ba-blog-featured-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ba-transition-base);
}

.ba-blog-featured-title a:hover {
  color: #c084fc;
}

.ba-blog-featured-excerpt {
  font-size: 1.125rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: var(--ba-spacing-lg);
}

/* ============================================
   SIDEBAR
   ============================================ */

.ba-blog-sidebar {
  position: sticky;
  top: 2rem;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

/* Custom scrollbar for sidebar */
.ba-blog-sidebar::-webkit-scrollbar {
  width: 6px;
}

.ba-blog-sidebar::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.ba-blog-sidebar::-webkit-scrollbar-thumb {
  background: rgba(147, 51, 234, 0.5);
  border-radius: 3px;
}

.ba-blog-sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(147, 51, 234, 0.7);
}

.ba-sidebar-widget {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-xl);
  padding: var(--ba-spacing-lg);
  margin-bottom: var(--ba-spacing-lg);
}

.ba-sidebar-widget-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--ba-spacing-md);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Category Filter */
.ba-category-filter {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ba-category-item {
  padding: 0.75rem 1rem;
  border-radius: var(--ba-radius-md);
  color: #cbd5e1;
  text-decoration: none;
  transition: all var(--ba-transition-base);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ba-category-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
}

.ba-category-item.active {
  background: rgba(147, 51, 234, 0.2);
  color: #c084fc;
  font-weight: 600;
}

.ba-category-count {
  margin-left: auto;
  font-size: 0.875rem;
  color: #64748b;
}

/* Newsletter Box */
.ba-newsletter-box {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.2), rgba(59, 130, 246, 0.2));
  border: 1px solid rgba(147, 51, 234, 0.3);
  border-radius: var(--ba-radius-xl);
  padding: var(--ba-spacing-lg);
}

.ba-newsletter-title {
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.ba-newsletter-description {
  font-size: 0.875rem;
  color: #cbd5e1;
  margin-bottom: var(--ba-spacing-md);
  line-height: 1.5;
}

.ba-newsletter-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--ba-radius-md);
  color: #ffffff;
  font-size: 0.875rem;
  margin-bottom: var(--ba-spacing-sm);
  transition: all var(--ba-transition-base);
}

.ba-newsletter-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.15);
  border-color: #9333ea;
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.1);
}

.ba-newsletter-input::placeholder {
  color: #94a3b8;
}

.ba-newsletter-submit {
  width: 100%;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, #9333ea, #7c3aed);
  border: none;
  border-radius: var(--ba-radius-md);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ba-transition-base);
}

.ba-newsletter-submit:hover {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(147, 51, 234, 0.3);
}

.ba-newsletter-submit:active {
  transform: translateY(0);
}

/* Popular Posts Widget */
.ba-popular-post-item {
  display: flex;
  gap: var(--ba-spacing-md);
  padding: var(--ba-spacing-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--ba-transition-base);
}

.ba-popular-post-item:last-child {
  border-bottom: none;
}

.ba-popular-post-item:hover {
  transform: translateX(4px);
}

.ba-popular-post-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #9333ea;
  opacity: 0.5;
  min-width: 2rem;
}

.ba-popular-post-content {
  flex: 1;
}

.ba-popular-post-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0.25rem;
  line-height: 1.4;
}

.ba-popular-post-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ba-transition-base);
}

.ba-popular-post-title a:hover {
  color: #c084fc;
}

.ba-popular-post-meta {
  font-size: 0.75rem;
  color: #64748b;
}

/* ============================================
   PAGINATION
   ============================================ */

.ba-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--ba-spacing-sm);
  margin-top: var(--ba-spacing-3xl);
}

.ba-pagination .page-numbers {
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--ba-blog-border);
  border-radius: var(--ba-radius-md);
  color: #cbd5e1;
  text-decoration: none;
  transition: all var(--ba-transition-base);
  min-width: 2.75rem;
  text-align: center;
}

.ba-pagination .page-numbers:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(147, 51, 234, 0.5);
  color: #ffffff;
}

.ba-pagination .page-numbers.current {
  background: linear-gradient(135deg, #9333ea, #7c3aed);
  border-color: transparent;
  color: #ffffff;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .ba-blog-layout {
    grid-template-columns: 1fr;
  }

  .ba-blog-sidebar {
    position: static;
    max-height: none;
  }

  .ba-blog-featured-article {
    grid-template-columns: 1fr;
  }

  .ba-blog-featured-image {
    min-height: 300px;
  }
}

@media (max-width: 768px) {
  .ba-blog-title {
    font-size: 2.5rem;
  }

  .ba-blog-subtitle {
    font-size: 1rem;
  }

  .ba-blog-featured-title {
    font-size: 1.75rem;
  }

  .ba-blog-featured-content {
    padding: var(--ba-spacing-lg);
  }

  .ba-blog-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .ba-blog-archive {
    padding: var(--ba-spacing-xl) 0;
  }

  .ba-blog-title {
    font-size: 2rem;
  }

  .ba-container {
    padding: 0 var(--ba-spacing-md);
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.ba-lazy {
  opacity: 0;
  transition: opacity var(--ba-transition-slow);
}

.ba-lazy.loaded {
  opacity: 1;
}

.ba-success-message {
  color: #10b981;
  font-size: 0.875rem;
  margin-top: var(--ba-spacing-sm);
}

.ba-error-message {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: var(--ba-spacing-sm);
}