* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 48px;
  background: #111;
  color: #ddd;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.page-header {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 0 8px;
}

h1 {
  margin: 0 0 4px;
  font-size: 1.5rem;
  color: #fff;
}

.subtitle {
  margin: 0 0 16px;
  color: #999;
  font-size: 0.9rem;
}

.series-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.series-nav a {
  color: #8ab4f8;
  text-decoration: none;
  font-size: 0.85rem;
  padding: 4px 10px;
  border: 1px solid #333;
  border-radius: 4px;
  background: #1a1a1a;
}

.series-nav a:hover { background: #252525; }

.controls { margin-bottom: 8px; }

.controls button {
  font-size: 0.85rem;
  padding: 6px 14px;
  margin-right: 8px;
  background: #222;
  color: #ddd;
  border: 1px solid #444;
  border-radius: 4px;
  cursor: pointer;
}

.controls button:hover { background: #2e2e2e; }

main {
  max-width: 1400px;
  margin: 0 auto;
}

.series {
  margin: 16px 0;
  border: 1px solid #2a2a2a;
  border-radius: 6px;
  background: #161616;
}

.series summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.series summary::-webkit-details-marker { display: none; }

.series-title {
  font-weight: 600;
  color: #eee;
}

.series-count {
  color: #888;
  font-size: 0.85rem;
}

.series-toggle {
  margin-left: auto;
  color: #888;
}

.series-toggle::after { content: "▸ expand"; font-size: 0.8rem; }
.series[open] .series-toggle::after { content: "▾ collapse"; }

.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  padding: 0 16px 16px;
}

.thumb {
  margin: 0;
  text-align: center;
}

.thumb img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
  background: #000;
}

.thumb a:hover img { outline: 2px solid #8ab4f8; }

.thumb figcaption {
  margin-top: 4px;
  font-size: 0.72rem;
  color: #999;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (max-width: 1200px) {
  .grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}