:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1b1d22;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #1565c0;
  --pin: #c62828;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 6px 16px rgba(0, 0, 0, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1e2126;
    --text: #eceff3;
    --muted: #9aa3ae;
    --line: #2c3037;
    --accent: #62a4ff;
    --pin: #ff6b6b;
    --shadow: 0 1px 3px rgba(0, 0, 0, .5);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: inherit; text-decoration: none; }

.appbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 52px;
  padding: 0 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.appbar h1 { font-size: 17px; margin: 0; font-weight: 600; }
.appbar .spacer { flex: 1; }

.wrap { max-width: 900px; margin: 0 auto; padding: 14px; }

/* ---------- 一覧 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}
@media (min-width: 620px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

.card {
  display: block;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card:active { transform: scale(.985); }

.card .thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1.414;
  background: linear-gradient(180deg, #dfe3e8, #cfd4da);
  display: block;
}
@media (prefers-color-scheme: dark) {
  .card .thumb { background: linear-gradient(180deg, #262a30, #1b1e23); }
}
/* 横型チラシも切れないように contain（背景は白紙面に合わせる） */
.card .thumb img { width: 100%; height: 100%; object-fit: contain; background: #fff; display: block; }

.card .body { padding: 10px 12px 12px; }
.card .title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card .period { margin-top: 4px; font-size: 12px; color: var(--muted); }

.badge-pin {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--pin);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 999px;
}

.section-title {
  margin: 22px 0 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .04em;
}
.section-title:first-child { margin-top: 4px; }

.empty, .error {
  padding: 40px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.error { color: var(--pin); }

.skeleton { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .5; } }

/* ---------- ビューア ---------- */
body.viewer { overflow: hidden; background: #23262b; height: 100dvh; }
.viewer-root { position: fixed; inset: 0; display: flex; flex-direction: column; }

.viewer-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  height: 48px;
  background: rgba(20, 22, 26, .96);
  color: #fff;
  flex: none;
}
.viewer-bar .vtitle {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.stage {
  position: relative;
  flex: 1;
  overflow: hidden;
  overscroll-behavior: contain;
  touch-action: none;          /* パン/ズームは JS 側で管理する */
  background: #23262b;
}
.canvas-holder {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  will-change: transform;
}
#pdfCanvas { display: block; box-shadow: 0 2px 18px rgba(0, 0, 0, .55); background: #fff; }

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: none;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  background: rgba(20, 22, 26, .96);
  color: #fff;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .08);
  color: #fff;
  border-radius: 8px;
  min-width: 40px;
  height: 36px;
  padding: 0 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.btn:disabled { opacity: .35; }
.btn.on { background: var(--accent); border-color: transparent; }
.pageinfo { font-size: 13px; min-width: 72px; text-align: center; font-variant-numeric: tabular-nums; }

.minimap {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 92px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 3px 12px rgba(0, 0, 0, .5);
  display: none;
  z-index: 5;
  touch-action: none;
}
.minimap.show { display: block; }
.minimap canvas { display: block; width: 100%; height: auto; }
.minimap .vp {
  position: absolute;
  border: 2px solid var(--accent);
  background: rgba(21, 101, 192, .18);
  pointer-events: none;
}

.spinner {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  pointer-events: none;
}

/* ---------- 管理画面 ---------- */
.admin .wrap { max-width: 720px; }
.adm-section { margin-top: 22px; }
.adm-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.adm-row.dragging { opacity: .4; }
.adm-row.over { border-color: var(--accent); }
.adm-row .handle { cursor: grab; font-size: 18px; color: var(--muted); touch-action: none; user-select: none; }
.adm-row .info { flex: 1; min-width: 0; }
.adm-row .info .t { font-size: 14px; font-weight: 600; }
.adm-row .info .s { font-size: 12px; color: var(--muted); margin-top: 2px; }
.adm-row img.mini { width: 34px; height: 48px; object-fit: cover; border-radius: 4px; border: 1px solid var(--line); }
.tag { font-size: 11px; padding: 2px 6px; border-radius: 999px; background: var(--pin); color: #fff; margin-right: 6px; }

.btn2 {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  height: 34px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.btn2.primary { background: var(--accent); color: #fff; border-color: transparent; }
.btn2.danger { color: var(--pin); }
.btn2:disabled { opacity: .5; cursor: default; }

dialog.sheet {
  border: none;
  border-radius: 14px;
  padding: 0;
  width: min(560px, 92vw);
  background: var(--surface);
  color: var(--text);
}
dialog.sheet::backdrop { background: rgba(0, 0, 0, .45); }
.sheet-head { padding: 14px 16px; border-bottom: 1px solid var(--line); font-weight: 700; }
.sheet-body { padding: 14px 16px; display: grid; gap: 12px; }
.sheet-foot { padding: 12px 16px; border-top: 1px solid var(--line); display: flex; gap: 8px; justify-content: flex-end; }

label.field { display: grid; gap: 5px; font-size: 12px; color: var(--muted); font-weight: 600; }
label.field input[type=text],
label.field input[type=date],
label.field input[type=number],
label.field textarea {
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  width: 100%;
}
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--text); }
.check input { width: 18px; height: 18px; }
.hint { font-size: 12px; color: var(--muted); }
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #222;
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 100;
}