:root {
  --bg: #f4f4f5;
  --card: #ffffff;
  --text: #18181b;
  --muted: #71717a;
  --border: #e4e4e7;
  --accent: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0 0.85rem;
  margin-bottom: 0.75rem;
}

h1 {
  margin: 0;
  font-size: 1.2rem;
}

.subtitle {
  margin: 0.3rem 0 0.7rem;
  color: var(--muted);
  font-size: 0.9rem;
}

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

.filter-btn {
  border: 1px solid var(--border);
  background: #fafafa;
  color: var(--text);
  font-size: 0.87rem;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
}

.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.summary {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

main {
  padding: 1rem 0 2rem;
}

.error {
  color: #b91c1c;
  font-size: 0.9rem;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

@media (max-width: 1180px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem;
  overflow: hidden;
}

.title {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.35;
}

.card-cover-wrap {
  margin: -0.8rem -0.8rem 0.7rem;
  background: #f1f5f9;
  border-bottom: 1px solid var(--border);
}

.card-cover {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #e5e7eb;
}

.meta {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.meta dt {
  color: var(--muted);
}

.meta dd {
  margin: 0;
  color: var(--text);
}

.meta-grid {
  margin-top: 0.5rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.45rem;
}

.links {
  margin-top: 0.45rem;
  font-size: 0.78rem;
}

.links a {
  color: var(--accent);
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

.detail-main {
  display: grid;
  gap: 0.9rem;
}

.detail-hero .title {
  font-size: 1.1rem;
}

.card h3 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}

.gallery-grid img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #eee;
}

.gallery-thumb-btn {
  border: none;
  padding: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.detail-prose {
  white-space: pre-wrap;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
}

.json-pre {
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
  padding: 0.7rem;
  border-radius: 6px;
  overflow: auto;
  font-size: 0.76rem;
}

.payload-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

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

.payload-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  background: #fafafa;
}

.payload-card h4 {
  margin: 0 0 0.45rem;
  font-size: 0.86rem;
}

.payload-label {
  margin: 0.45rem 0 0.25rem;
  font-size: 0.76rem;
  color: var(--muted);
}

.payload-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.payload-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.75rem;
}

.kv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.kv-table th,
.kv-table td {
  border: 1px solid var(--border);
  padding: 0.35rem 0.45rem;
  text-align: left;
  vertical-align: top;
}

.kv-table th {
  width: 42%;
  color: var(--muted);
  background: #f8fafc;
  font-weight: 600;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-image {
  max-width: min(92vw, 1400px);
  max-height: 82vh;
  object-fit: contain;
  border-radius: 8px;
  background: #111827;
}

.lightbox-caption {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #e5e7eb;
  font-size: 0.85rem;
  margin: 0;
}

.lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  border: none;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-prev {
  left: 18px;
}

.lightbox-next {
  right: 18px;
}

.full-json-wrap {
  display: grid;
  gap: 0.45rem;
}

.json-tree {
  font-size: 0.82rem;
  line-height: 1.35;
}

.json-tree details {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.45rem;
  background: #fafafa;
  margin-bottom: 0.35rem;
}

.json-tree summary {
  cursor: pointer;
  user-select: none;
}

.json-tree .json-key {
  color: var(--muted);
  font-weight: 600;
}

.json-tree .json-scalar {
  margin-top: 0.25rem;
  padding: 0.25rem 0.35rem;
  border-radius: 4px;
  background: #fff;
  border: 1px solid var(--border);
  word-break: break-word;
}