:root {
  --bg-light: #f8f8ff;
  --bg-dark: #1c1c1e;
  --text-light: #1c1c1e;
  --text-dark: #f8f8ff;
  --accent: #ff6b81;
  --accent-secondary: #00bcd4;
  --card-bg-light: #ffffff;
  --card-bg-dark: #2c2c2e;
  --border-radius: 1rem;
  --font-family: system-ui, sans-serif;
}

[data-theme='light'] {
  --bg: var(--bg-light);
  --text: var(--text-light);
  --card-bg: var(--card-bg-light);
}
[data-theme='dark'] {
  --bg: var(--bg-dark);
  --text: var(--text-dark);
  --card-bg: var(--card-bg-dark);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  transition: background 0.3s, color 0.3s;
}

.container {
  max-width: 960px;
  margin: auto;
  padding: 1rem;
}

.site-header, .site-footer {
  background: var(--card-bg);
  border-bottom: 2px solid var(--accent);
  padding: 1rem 0;
}

.site-header nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  margin: 0;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: bold;
}

.hero {
  text-align: center;
  margin: 2rem 0;
}

.card-section {
  margin: 3rem 0;
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  border: 2px solid var(--accent-secondary);
}

.search-bar {
  margin-top: 0.5rem;
  padding: 0.5rem;
  width: 100%;
  max-width: 300px;
  border-radius: 0.5rem;
  border: 1px solid var(--accent);
}