/**
 * News Frontend Styling - Best Practices 2026
 * Modern, accessible, performant news section
 */

/* ===== CSS CUSTOM PROPERTIES (Design Tokens) ===== */
:root {
  /* Colors - Visual Categories */
  --color-category-diary: #4A90E2;
  --color-category-concert: #D4AF37;
  --color-category-reflection: #8B5CF6;
  --color-category-msc: #E74C3C;
  --color-category-archive: #6B7280;

  /* Spacing System (8px base) */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Georgia', 'Cambria', 'Times New Roman', serif;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 2rem);
  --text-3xl: clamp(2rem, 1.75rem + 1.25vw, 3rem);

  /* Elevations / Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== VISUAL CATEGORY BADGE ===== */
.news-card__category-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 10;

  display: inline-flex;
  align-items: center;

  padding: 0.5rem 1rem;
  background: var(--category-color, #10B981);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);

  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #ffffff;

  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

/* Badge hover effect */
.news-card:hover .news-card__category-badge {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* ===== LATERAL STRIPE (Category Color) ===== */
.news-card {
  position: relative;
  border-left: 4px solid var(--category-color, #10B981);
}

/* ===== NEWS CARD ENHANCEMENTS ===== */
.news-card {
  list-style: none;
  border-radius: var(--radius-lg);
  background: #ffffff;
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  box-shadow: var(--shadow-sm);
}

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

.news-card:focus-within {
  outline: 2px solid var(--category-color, #10B981);
  outline-offset: 2px;
}

.news-card__body {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.news-card__media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #f3f4f6;
}

.news-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-card__media img {
  transform: scale(1.05);
}

/* LQIP (Low Quality Image Placeholder) */
.news-card__media .lqip {
  position: absolute;
  inset: 0;
  filter: blur(20px);
  transform: scale(1.1);
  z-index: 1;
}

.news-card__media img:not(.lqip) {
  position: relative;
  z-index: 2;
}

.news-card__content {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.news-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.4;

  /* Limit to 2 lines with ellipsis */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.news-card__title a {
  color: #111827;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.news-card__title a:hover {
  color: var(--category-color, #10B981);
}

.news-card__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  color: #6b7280;
  font-family: var(--font-sans);
}

.news-card__meta time {
  font-variant-numeric: tabular-nums;
}

.news-card__excerpt {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: #4b5563;

  /* Limit to 3 lines */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.news-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.news-card__tags .tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: #f3f4f6;
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 500;
  color: #6b7280;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.news-card__tags .tag:hover {
  background: var(--category-color, #10B981);
  color: #ffffff;
}

.news-card__cta {
  margin: var(--space-sm) 0 0 0;
}

.news-card__cta .link-more {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;

  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--category-color, #10B981);
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.news-card__cta .link-more::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.news-card__cta .link-more:hover {
  gap: 0.625rem;
}

.news-card__cta .link-more:hover::after {
  transform: translateX(4px);
}

/* ===== GRID LAYOUT ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
  padding: 0;
  margin: var(--space-xl) 0;
  list-style: none;
}

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

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

/* ===== ACCESSIBILITY ===== */
/* Focus visible for keyboard navigation */
.news-card a:focus-visible {
  outline: 2px solid var(--category-color, #10B981);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .news-card:hover {
    transform: none;
  }

  .news-card:hover .news-card__media img {
    transform: none;
  }
}

/* ===== PLACEHOLDER STATES ===== */
.news-card__media--placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-card__media--placeholder::before {
  content: '📰';
  font-size: 3rem;
  opacity: 0.3;
}

/* ===== LOADING SKELETON ===== */
.news-card.is-loading {
  pointer-events: none;
}

.news-card.is-loading * {
  background: linear-gradient(
    90deg,
    #f3f4f6 0%,
    #e5e7eb 50%,
    #f3f4f6 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  color: transparent !important;
}

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