/* Tech Daily - Modern Dark Theme */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #21262d;
  --bg-hover: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-orange: #d29922;
  --accent-purple: #bc8cff;
  --accent-red: #f85149;
  --border: #30363d;
  --shadow: rgba(0, 0, 0, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 2rem;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.date-badge {
  background: var(--bg-card);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Main Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Section Headers */
.section {
  margin-bottom: 3rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border);
}

.section-icon {
  font-size: 1.5rem;
}

.section-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.section-count {
  background: var(--bg-card);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-left: auto;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1rem;
}

/* Card Styles */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: all 0.2s ease;
  position: relative;
}

.card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--shadow);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.card-rank {
  background: var(--bg-hover);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  min-width: 1.75rem;
  text-align: center;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  flex: 1;
}

.card-title a {
  color: inherit;
  text-decoration: none;
}

.card-title a:hover {
  color: var(--accent-blue);
}

.card-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.6rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.tag-language {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent-blue);
}

.tag-stars {
  background: rgba(210, 153, 34, 0.15);
  color: var(--accent-orange);
}

.tag-category {
  background: rgba(188, 140, 255, 0.15);
  color: var(--accent-purple);
}

.tag-points {
  background: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
}

.tag-comments {
  background: rgba(139, 148, 158, 0.15);
  color: var(--text-secondary);
}

/* HN specific card */
.hn-card .card-source {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hn-card .card-source a {
  color: var(--text-secondary);
  text-decoration: none;
}

.hn-card .card-source a:hover {
  color: var(--accent-blue);
}

/* GitHub specific card */
.gh-card .repo-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
}

.gh-card .repo-owner {
  color: var(--text-secondary);
}

.gh-card .repo-name {
  color: var(--accent-blue);
  font-weight: 600;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.footer a {
  color: var(--accent-blue);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  gap: 2rem;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-radius: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-blue);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-bar {
    flex-direction: column;
    gap: 1rem;
  }
  
  .section-header {
    flex-wrap: wrap;
  }
  
  .section-count {
    margin-left: 0;
    margin-top: 0.5rem;
    width: 100%;
    text-align: center;
  }
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading {
  animation: pulse 2s infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}