:root {
  --bg-light: #f5f7fa;
  --bg-dark: #1f2128;
  --text-light: #222;
  --text-dark: #e6e6e6;
  --card-light: #ffffff;
  --card-dark: #2b2e37;
  --accent: #3b82f6;
  --shadow-light: rgba(0, 0, 0, 0.05);
  --shadow-dark: rgba(0, 0, 0, 0.3);
}

html {{
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-light);
  transition: background-color 0.3s ease, color 0.3s ease;
}}

body.dark {{
  background-color: var(--bg-dark);
  color: var(--text-dark);
}}

.container {{
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
}}

h1 {{
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
}}

.controls {{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}}

.controls select,
.controls input,
.controls button {{
  padding: 0.5rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 0.5rem;
  font-size: 1rem;
}}

.controls input {{
  min-width: 200px;
  flex: 1;
}}

.controls button {{
  background-color: var(--accent);
  color: #fff;
  cursor: pointer;
  border: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}}

.links {{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}}

.links a {{
  display: block;
  background-color: var(--card-light);
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  text-align: center;
  text-decoration: none;
  color: var(--accent);
  box-shadow: 0 2px 4px var(--shadow-light);
  transition: transform 0.2s, box-shadow 0.2s;
  font-weight: 600;
}}

body.dark .links a {{
  background-color: var(--card-dark);
  box-shadow: 0 2px 8px var(--shadow-dark);
  color: #90c2ff;
}}

.links a:hover {{
  transform: translateY(-4px);
  box-shadow: 0 4px 12px var(--shadow-light);
}}

body.dark .links a:hover {{
  box-shadow: 0 4px 12px var(--shadow-dark);
}}

.category {{
  margin-bottom: 2.5rem;
}}

.category h2 {{
  font-size: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}}

footer {{
  text-align: center;
  margin-top: 3rem;
  font-size: 0.875rem;
  opacity: 0.7;
}}