:root {
  --ink: #1a1a2e;
  --paper: #faf6ef;
  --vermilion: #c1272d;
  --indigo: #2e3a5c;
  --line: rgba(26, 26, 46, 0.12);
  --shadow: 0 6px 24px rgba(26, 26, 46, 0.08);
  --radius: 8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Noto Sans JP", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

a { color: var(--indigo); }
a:hover { color: var(--vermilion); }

button {
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: var(--radius);
  padding: 6px 12px;
}
button:hover:not(:disabled) { border-color: var(--vermilion); color: var(--vermilion); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
.icon-btn { font-size: 20px; padding: 4px 10px; line-height: 1; }

/* ── Header ── */
.site-header { position: sticky; top: 0; z-index: 10; }
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 20px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: "Shippori Mincho", serif;
  font-size: 20px; font-weight: 700;
  margin: 0;
  white-space: nowrap;
}
#menu-toggle { display: none; flex-shrink: 0; }
.search { margin-left: auto; display: flex; gap: 6px; flex-shrink: 0; }
.search input {
  font: inherit;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 200px;
}

/* Infobar: 濃紺地で白テキスト → 白背景ヘッダーと明確に区別 */
.infobar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 20px; gap: 12px;
  background: var(--indigo);
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
}
.infobar a { color: #a8c4e8; text-decoration: none; }
.infobar a:hover { color: #fff; text-decoration: underline; }
.infobar-links { display: flex; gap: 16px; white-space: nowrap; flex-shrink: 0; }

/* ── Layout ── */
.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: calc(100vh - 56px);
}

/* ── Sidebar ── */
.sidebar {
  border-right: 1px solid var(--line);
  padding: 16px;
  background: #fff;
  display: flex; flex-direction: column; gap: 8px;
}
.facet h2 {
  font-family: "Shippori Mincho", serif;
  font-size: 15px;
  margin: 0 0 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--vermilion);
}
.facet-list {
  list-style: none; margin: 0; padding: 0;
  max-height: calc(100vh - 160px);
  overflow-y: auto;
}
.facet-list li { margin: 2px 0; }
.facet-list button {
  width: 100%; text-align: left;
  background: transparent;
  border: 1px solid transparent;
  padding: 5px 8px;
  font-size: 13px;
  line-height: 1.4;
}
.facet-list button.active {
  border-color: var(--vermilion);
  color: var(--vermilion);
  background: rgba(193, 39, 45, 0.06);
}
.facet-list .count {
  font-size: 11px; color: var(--indigo); margin-left: 4px;
}

/* ── Main ── */
.main { padding: 16px; }
.status {
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--vermilion);
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
}

/* ── Grid ── */
.grid {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card .thumb {
  width: 100%; aspect-ratio: 3 / 4;
  background: #ece6dc;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.card .thumb img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.card .thumb-label {
  color: var(--indigo); font-family: "Shippori Mincho", serif; font-size: 20px;
}
.card .body { padding: 8px 10px; }
.card .title {
  font-family: "Shippori Mincho", serif; font-weight: 700;
  margin: 0 0 3px; font-size: 13px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card .meta-line { font-size: 11px; color: var(--indigo); }

/* ── Pager ── */
.pager {
  display: flex; align-items: center; gap: 12px;
  margin-top: 20px; justify-content: center;
}

/* ── Modal ── */
.modal {
  position: fixed; inset: 0;
  background: rgba(26, 26, 46, 0.75);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal[hidden] { display: none; }
.modal-inner {
  background: var(--paper);
  border-radius: var(--radius);
  max-width: 900px; width: 100%; max-height: 92vh;
  display: flex; flex-direction: column;
  position: relative;
  padding: 16px;
  overflow: hidden;
  gap: 10px;
}
.modal-close {
  position: absolute; top: 10px; right: 10px;
  font-size: 22px; z-index: 1;
}
.viewer-nav-bar {
  display: flex; align-items: center; gap: 8px;
  padding-right: 40px;
}
.viewer-nav-bar .icon-btn { font-size: 26px; padding: 2px 10px; flex-shrink: 0; }
#viewer-title {
  font-family: "Shippori Mincho", serif;
  margin: 0; font-size: 17px;
  flex: 1;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ── Viewer (simple img) ── */
.viewer {
  flex: 1; min-height: 280px;
  background: #1a1a2e;
  border-radius: var(--radius);
  overflow: auto;
  display: flex; align-items: flex-start; justify-content: center;
  position: relative;
}
.viewer-img {
  max-width: 100%; height: auto; display: block;
  cursor: zoom-in;
}
.viewer-msg {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: #888; font-size: 14px; margin: 0;
}

/* ── Meta ── */
.meta {
  display: grid; grid-template-columns: 80px 1fr; gap: 3px 10px;
  font-size: 12px; margin: 0;
}
.meta dt { color: var(--indigo); }
.meta dd { margin: 0; word-break: break-all; }
.meta-note { display: block; font-size: 11px; color: var(--indigo); opacity: 0.7; }

/* ── Mobile ── */
@media (max-width: 720px) {
  #menu-toggle { display: inline-block; }
  .topbar { flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  .brand { font-size: 16px; flex: 1; }
  .search { order: 3; width: 100%; margin-left: 0; }
  .search input { min-width: 0; flex: 1; }
  .search button { white-space: nowrap; }

  .infobar { padding: 4px 12px; flex-wrap: wrap; gap: 2px 8px; font-size: 11px; }
  .infobar-links { gap: 10px; }

  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; inset: 0; top: 0;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 20;
    overflow-y: auto;
    max-width: 80vw;
  }
  .sidebar.open { transform: translateX(0); }
  .facet-list { max-height: none; }

  .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
  .main { padding: 10px; }

  .modal-inner { padding: 12px; max-height: 95vh; gap: 8px; }
  .viewer { min-height: 220px; }
  #viewer-title { font-size: 15px; }
}