:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #0ea5e9;
}

* {
  box-sizing: border-box;
}

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

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner,
main {
  width: min(960px, 92vw);
  margin: 0 auto;
}

.header-inner {
  padding: 1.25rem 0;
}

h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

main {
  padding: 1.5rem 0 3rem;
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.55rem 0.65rem;
  color: var(--text);
  background: var(--surface);
}

#bases-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.base-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.9rem 1rem;
}

.base-card a {
  color: var(--text);
  text-decoration: none;
}

.base-card a:hover,
.base-card a:focus-visible {
  color: var(--accent);
}

.base-meta {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.empty-state {
  color: var(--muted);
}

.base-page {
  display: grid;
  gap: 1rem;
}

.placeholder-box {
  border: 1px dashed var(--border);
  background: var(--surface);
  border-radius: 0.75rem;
  padding: 1rem;
  color: var(--muted);
}

.home-link {
  color: inherit;
  text-decoration: none;
}

.home-link:hover,
.home-link:focus-visible {
  color: var(--accent);
}

.not-found {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem;
}

.not-found h2 {
  margin-top: 0;
}

.not-found a {
  color: var(--accent);
}