:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel-2: #182230;
  --border: #253345;
  --text: #e8edf4;
  --text-dim: #9fb0c3;
  --accent: #4fd1c5;
  --accent-2: #7c9cff;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  padding: 2.5rem 1.5rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
}

header p {
  color: var(--text-dim);
  margin: 0;
  font-size: 0.95rem;
}

.meta {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.controls {
  max-width: 1000px;
  margin: 1.5rem auto 0;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#search {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
}

#search:focus {
  outline: none;
  border-color: var(--accent);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-dim);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--accent-2);
  color: var(--text);
}

.filter-btn.active {
  background: var(--accent);
  color: #04231f;
  border-color: var(--accent);
  font-weight: 600;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem;
}

.category-group {
  margin-bottom: 2rem;
}

.category-title {
  font-size: 1.1rem;
  margin: 0 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
}

.category-title .count {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: normal;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.card a.title-link {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
}

.card a.title-link:hover {
  color: var(--accent);
}

.card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}

.tag {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.empty-state {
  text-align: center;
  color: var(--text-dim);
  padding: 3rem 1rem;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--accent-2);
}