/* BestOf Research Index Styles */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

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

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

.index-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 3rem 1rem;
  text-align: center;
}

.index-header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.tagline {
  opacity: 0.9;
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

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

.research-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.card-header h3 {
  font-size: 1.25rem;
  color: var(--text);
}

.geography {
  background: var(--bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
}

.top-pick {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.top-pick .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--success);
  font-weight: 600;
}

.top-pick .product {
  font-weight: 500;
  flex: 1;
}

.top-pick .score {
  background: var(--success);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.card-footer .date {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.card-footer .arrow {
  color: var(--primary);
  font-weight: bold;
}

.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem;
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

footer .count {
  margin-top: 0.5rem;
  font-weight: 600;
}

@media (max-width: 640px) {
  .index-header h1 {
    font-size: 1.75rem;
  }
  
  .research-grid {
    grid-template-columns: 1fr;
  }
}