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

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #666666;
  --border: #e0e0e0;
  --accent: #000000;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --text: #f0f0f0;
    --text-secondary: #888888;
    --border: #333333;
    --accent: #ffffff;
  }
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 24px;
}

.search-section {
  margin-bottom: 48px;
}

.search-input {
  width: 100%;
  padding: 12px 0;
  font-size: 18px;
  font-family: inherit;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-bottom-color: var(--accent);
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.tabs {
  display: flex;
  gap: 24px;
  margin-top: 24px;
}

.tab {
  background: none;
  border: none;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.1s;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  color: var(--text);
  font-weight: 500;
}

.results {
  margin-bottom: 48px;
}

.result-item {
  margin-bottom: 32px;
  animation: fadeIn 0.15s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.result-title a {
  color: var(--text);
  text-decoration: none;
}

.result-title a:hover {
  text-decoration: underline;
}

.result-snippet {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.result-source {
  font-size: 12px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  color: var(--text-secondary);
  opacity: 0.7;
}

.result-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.source-badge {
  font-size: 11px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0 6px;
  border-radius: 3px;
  opacity: 0.65;
}

.load-more {
  display: block;
  width: 100%;
  padding: 12px;
  margin-top: 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.1s;
}

.load-more:hover {
  color: var(--text);
  border-color: var(--accent);
}

.error-detail {
  font-size: 12px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  opacity: 0.7;
  margin-bottom: 16px;
  line-height: 1.8;
}

.no-more {
  padding: 24px 0;
  font-size: 12px;
}

.quick-search {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.quick-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.group-label {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 40px;
}

.quick-link {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.1s;
}

.quick-link:hover {
  color: var(--text);
}

.loading {
  text-align: center;
  padding: 48px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.empty-state {
  text-align: center;
  padding: 48px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.empty-state p {
  margin-bottom: 16px;
}

.fallback-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.fallback-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  transition: all 0.1s;
}

.fallback-links a:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

@media (max-width: 600px) {
  .container {
    padding: 40px 16px;
  }

  .search-input {
    font-size: 16px;
  }

  .tabs {
    gap: 16px;
  }

  .tab {
    font-size: 12px;
  }
}