:root {
  --bg: #f7f5f0;
  --card-bg: #ffffff;
  --text: #23201b;
  --text-sub: #6b645a;
  --border: #e5e0d6;
  --accent: #c8502d;
  --accent-text: #ffffff;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1a17;
    --card-bg: #262320;
    --text: #f0ece4;
    --text-sub: #a89f92;
    --border: #38342e;
    --accent: #e0662f;
    --accent-text: #1c1a17;
  }
}

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

body {
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  padding: 1rem 1rem 3rem;
}

header, main, footer { max-width: 48rem; margin: 0 auto; }

.head-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

h1 { font-size: 1.35rem; letter-spacing: 0.01em; }

.portal-link {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.portal-link:hover { text-decoration: underline; }

.meta {
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-sub);
}

.filter-bar {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.2rem;
  font-size: 0.9rem;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1 1 16rem;
}
.filter-group label { white-space: nowrap; color: var(--text-sub); }
.filter-group select {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--text);
  font: inherit;
}

.count {
  margin-top: 1.1rem;
  font-size: 0.8rem;
  color: var(--text-sub);
}

.list {
  margin-top: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.card {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 0.9rem;
  padding: 0.9rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card__thumb-link { display: block; }

.card__thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  background: var(--border);
  display: block;
}

.card__body { min-width: 0; }

.card__title {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  display: block;
}
.card__title:hover { text-decoration: underline; color: var(--accent); }

.card__meta {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-sub);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
.card__meta .dot { margin: 0 0.4rem; opacity: 0.5; }

.empty, .error {
  margin-top: 2rem;
  text-align: center;
  color: var(--text-sub);
  font-size: 0.9rem;
}
.error { color: var(--accent); }

footer {
  margin-top: 2.5rem;
  font-size: 0.76rem;
  color: var(--text-sub);
}
.admin-link { margin-top: 0.8rem; }
.admin-link a { color: var(--text-sub); text-decoration: underline; }

@media (max-width: 560px) {
  .card { grid-template-columns: 1fr; }
  .card__thumb { max-width: 320px; }
}