:root {
  --ant-primary: #1677ff;
  --ant-primary-hover: #4096ff;
  --ant-text: rgba(0, 0, 0, 0.88);
  --ant-text-secondary: rgba(0, 0, 0, 0.65);
  --ant-border: #d9d9d9;
  --ant-border-secondary: #f0f0f0;
  --ant-bg: #ffffff;
  --ant-bg-layout: #f5f5f5;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ant-text);
  background: var(--ant-bg-layout);
}

a {
  color: var(--ant-primary);
  text-decoration: none;
}

a:hover {
  color: var(--ant-primary-hover);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  background: var(--ant-bg);
  border-bottom: 1px solid var(--ant-border-secondary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  height: 64px;
}

.logo {
  font-size: 20px;
  font-weight: 600;
  color: var(--ant-text);
}

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

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  color: var(--ant-text-secondary);
  font-size: 14px;
  font-weight: 400;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--ant-primary);
}

.nav-link.active {
  color: var(--ant-primary);
  font-weight: 500;
}

/* Main */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* Search Section */
.search-section {
  background: var(--ant-bg);
  padding: 48px 24px;
  text-align: center;
  border-bottom: 1px solid var(--ant-border-secondary);
}

.search-container {
  max-width: 640px;
  margin: 0 auto;
}

.search-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--ant-text);
  margin-bottom: 16px;
}

.search-subtitle {
  font-size: 16px;
  color: var(--ant-text-secondary);
  margin-bottom: 32px;
}

.search-box {
  display: flex;
  border: 1px solid var(--ant-border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  border: none;
  font-size: 14px;
  outline: none;
}

.search-input:focus {
  border-color: var(--ant-primary);
}

.search-btn {
  padding: 12px 24px;
  background: var(--ant-primary);
  color: white;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.search-btn:hover {
  background: var(--ant-primary-hover);
}

.search-suggestions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.suggestion-label {
  color: var(--ant-text-secondary);
  font-size: 14px;
}

.suggestion-tag {
  padding: 6px 16px;
  background: var(--ant-bg-layout);
  border: 1px solid var(--ant-border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.suggestion-tag:hover {
  background: var(--ant-border-secondary);
  border-color: var(--ant-primary);
}

/* Page Layout */
.page-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--ant-text);
  margin-bottom: 16px;
  text-align: center;
}

.page-subtitle {
  font-size: 14px;
  color: var(--ant-text-secondary);
  text-align: center;
  margin-bottom: 32px;
}

/* Results Section */
.results-section {
  padding: 32px 24px;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--ant-text);
}

.results-count {
  color: var(--ant-text-secondary);
  font-size: 14px;
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

/* About Page */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ant-text);
  margin-top: 32px;
  margin-bottom: 16px;
}

.about-content p {
  color: var(--ant-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-content ul {
  list-style: none;
  padding: 0;
}

.about-content li {
  color: var(--ant-text-secondary);
  margin-bottom: 12px;
  line-height: 1.8;
}

/* Leaderboard */
.leaderboard-section {
  text-align: center;
}

.leaderboard-tabs {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 32px;
}

.tab-btn {
  padding: 8px 16px;
  background: transparent;
  color: var(--ant-text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--ant-primary);
}

.tab-btn.active {
  color: var(--ant-primary);
  border-bottom-color: var(--ant-primary);
}

.leaderboard-content {
  max-width: 900px;
  margin: 0 auto;
}

/* Load More */
.load-more-container {
  text-align: center;
  padding: 24px 0;
}

.load-more-btn {
  padding: 10px 24px;
  background: var(--ant-primary);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}

.load-more-btn:hover {
  background: var(--ant-primary-hover);
}

/* Loading */
.loading {
  text-align: center;
  padding: 48px 24px;
  color: var(--ant-text-secondary);
  font-size: 14px;
}

/* Error */
.error-message {
  text-align: center;
  padding: 48px 24px;
  color: #ff4d4f;
  font-size: 14px;
}

/* Footer */
.footer {
  background: var(--ant-bg);
  color: var(--ant-text);
  margin-top: 64px;
  padding: 48px 24px 32px;
  border-top: 1px solid var(--ant-border-secondary);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.footer-info h3,
.footer-links h4,
.footer-tech h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ant-text);
  margin-bottom: 16px;
}

.footer-info p {
  color: var(--ant-text-secondary);
  font-size: 14px;
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--ant-text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--ant-primary);
}

.footer-tech p {
  color: var(--ant-text-secondary);
  font-size: 14px;
  margin-bottom: 4px;
}