:root {
  --bg: #f5f5f7;
  --card-bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent-default: #0071e3;
  --border: #e5e5e7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e;
    --card-bg: #2c2c2e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --accent-default: #409cff;
    --border: #3a3a3c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 5vw, 3rem) 1rem;
}

h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 600;
}

#search {
  font-size: 1rem;
  padding: 0.55rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  min-width: 220px;
}

main {
  padding: 1rem clamp(1rem, 5vw, 3rem) 3rem;
}

.category {
  margin-bottom: 2rem;
}

.category h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

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

.card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.1rem 1.2rem;
  border-radius: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent, var(--accent-default));
  box-shadow: 0 4px 16px -6px var(--accent, var(--accent-default));
}

.card .icon {
  font-size: 1.6rem;
}

.card .icon-img {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  object-fit: cover;
}

.card .name {
  font-weight: 600;
  font-size: 1.02rem;
}

.card .desc {
  font-size: 0.85rem;
  color: var(--muted);
}

.empty {
  color: var(--muted);
  padding: 2rem 0;
  text-align: center;
}