:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --card: #ffffff;
  --card-dark: #1a1a1a;
  --text: #1a1a1a;
  --muted: #666;
  --accent: #e63946;
  --accent-strong: #d62839;
  --border: #e0e0e0;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

[data-theme='dark'] {
  --bg: #0a0a0a;
  --card: var(--card-dark);
  --text: #ffffff;
  --muted: #999;
  --border: #333;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  color: #fff;
  padding: 2.5rem 1rem;
  border-bottom: 2px solid rgba(230, 57, 70, 0.2);
  box-shadow: var(--shadow-md);
}

.hero__content {
  max-width: 1200px;
  margin: 0 auto;
}

h1 {
  font-size: 1.75rem;
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, #e0e0e0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.controls {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.search-input,
.filter-select {
  flex: 1;
  min-width: 150px;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
}

.btn-primary,
.btn-secondary,
.btn-icon,
.btn-karaman {
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(230, 57, 70, 0.08);
  border-color: var(--accent);
  color: var(--accent);
}

[data-theme='dark'] .btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

[data-theme='dark'] .btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.btn-karaman {
  border: 1px solid #8b4513;
  background: linear-gradient(135deg, #8b4513 0%, #a0522d 100%);
}

.btn-karaman:hover {
  background: linear-gradient(135deg, #a0522d 0%, #8b4513 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(139, 69, 19, 0.3);
}

.btn-icon {
  padding: 0.75rem;
  min-width: 44px;
}

.meta {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 1rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1rem;
  width: 100%;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.news-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.news-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.news-card__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  flex-wrap: wrap;
}

.category-badge {
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  letter-spacing: 0.5px;
}

.source {
  color: var(--muted);
  font-weight: 500;
}

.time {
  color: var(--muted);
  margin-left: auto;
  font-size: 0.7rem;
}

.favorite-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--muted);
  padding: 0.25rem 0.5rem;
  transition: all 0.2s ease;
  line-height: 1;
  border-radius: 4px;
}

[data-theme='dark'] .favorite-btn {
  color: #bbb;
}

.favorite-btn:hover {
  color: var(--accent);
  transform: scale(1.15);
  background: rgba(230, 57, 70, 0.1);
}

.favorite-btn.active {
  color: var(--accent);
}

.news-card .title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0.25rem 0 0;
  line-height: 1.4;
  color: var(--text);
}

.news-card .title:hover {
  color: var(--accent);
  cursor: pointer;
}

.ai-summary {
  background: rgba(230, 57, 70, 0.08);
  padding: 0.75rem;
  border-radius: 6px;
  border-left: 3px solid var(--accent);
}

.ai-summary__text {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text);
}

.summary {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.25rem 0;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cta {
  margin-top: auto;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  display: inline-block;
  width: fit-content;
}

.cta:hover {
  color: var(--accent-strong);
  transform: translateX(4px);
}

.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, rgba(255, 255, 255, 0.1) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 4px;
  height: 12px;
  margin: 0.5rem 0;
}

.skeleton__line {
  height: 12px;
  background: linear-gradient(90deg, var(--border) 25%, rgba(255, 255, 255, 0.1) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 4px;
  margin: 0.5rem 0;
}

.skeleton__line.short {
  width: 60%;
}

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

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin: 3rem 0;
}

.pagination__btn {
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.pagination__btn:hover:not(:disabled) {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

.pagination__info {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 500;
}

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--muted);
}

.empty-state p {
  font-size: 1rem;
  margin: 0;
}

footer {
  padding: 3rem 1rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  background: var(--bg);
}

@media (max-width: 768px) {
  .hero {
    padding: 2rem 1rem;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  .controls {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .search-input,
  .filter-select {
    width: 100%;
  }
  
  .news-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  main {
    padding: 1.5rem 1rem;
  }
  
  .news-card {
    padding: 1rem;
  }
}

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