/* UFO Cacher — dark theme, responsive grid */
:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-card-hover: #222633;
  --bg-detail: #141720;
  --text: #e8eaf0;
  --text-dim: #8b90a0;
  --accent: #5b8def;
  --accent-dim: #3a5ba8;
  --border: #2a2e3d;
  --brand-tag: #2d4a7a;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

/* Header */
.site-header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}
.site-header h1 { font-size: 2rem; letter-spacing: 0.05em; }
.subtitle { color: var(--text-dim); margin-top: 0.3rem; font-size: 0.95rem; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

/* Month tabs */
.month-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.8rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.2rem;
  scrollbar-width: thin;
}
.month-tab {
  flex-shrink: 0;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s;
}
.month-tab:hover { background: var(--bg-card-hover); color: var(--text); }
.month-tab.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: #fff;
}

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

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.12s, border-color 0.12s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-dim);
}
.card.open { border-color: var(--accent); }

.card-img-wrap {
  width: 100%;
  aspect-ratio: 1;
  background: #0a0c12;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.card-img-placeholder {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.card-body { padding: 0.7rem 0.8rem 0.9rem; }
.card-name {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-release {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 0.3rem;
}

/* Brand tags */
.brand-tags { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.5rem; }
.brand-tag {
  background: var(--brand-tag);
  color: #cdd9f0;
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Detail panel (expands below card body) */
.card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  background: var(--bg-detail);
  border-top: 1px solid var(--border);
}
.card.open .card-detail { max-height: 400px; }

.detail-inner { padding: 0.7rem 0.8rem; font-size: 0.85rem; }
.detail-row { display: flex; gap: 0.5rem; margin-bottom: 0.3rem; }
.detail-key { color: var(--text-dim); min-width: 4em; flex-shrink: 0; }
.detail-val { color: var(--text); word-break: break-word; }

/* Per-brand detail section (multi-brand) */
.brand-detail-section { margin-bottom: 0.6rem; }
.brand-detail-label {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

/* Links */
.detail-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.8rem;
  display: inline-block;
  margin-top: 0.3rem;
}
.detail-link:hover { text-decoration: underline; }

/* Status */
.status {
  text-align: center;
  padding: 2rem;
  color: var(--text-dim);
}
.hidden { display: none; }

/* Footer */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 600px) {
  .product-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.6rem; }
  .card-name { font-size: 0.82rem; }
}