:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card-bg: #f9fafb;
  --accent: #2563eb;
  --danger: #dc2626;
  --ok: #16a34a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8e8e8;
    --muted: #9aa0a8;
    --border: #2b2f36;
    --card-bg: #1c1f24;
    --accent: #60a5fa;
    --danger: #f87171;
    --ok: #4ade80;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  padding: 16px;
  max-width: 720px;
  margin: 0 auto;
}

h1 { font-size: 1.3rem; margin: 0 0 4px; }
.subtitle { color: var(--muted); font-size: 0.85rem; margin-bottom: 16px; }

a { color: var(--accent); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 12px;
}

.flight-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.flight-row .info { flex: 1; }
.flight-row .flight-id { font-weight: 600; font-size: 1.05rem; }
.flight-row .route { color: var(--muted); font-size: 0.85rem; }
.flight-row .label { color: var(--muted); font-size: 0.8rem; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.badge.pending { color: var(--muted); }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.error { color: var(--danger); border-color: var(--danger); }

button, input, select {
  font: inherit;
  color: inherit;
}
input, select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  width: 100%;
}
button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
}
button.secondary {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}
.form-grid label { font-size: 0.8rem; color: var(--muted); display: block; margin-bottom: 2px; }

.banner {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.banner.warn { border-color: #d97706; color: #d97706; }
.banner.error { border-color: var(--danger); color: var(--danger); }

/* --- 座席マップ --- */
.cabin { margin-bottom: 20px; }
.cabin h2 { font-size: 1rem; margin: 0 0 6px; }
.cabin .meta { color: var(--muted); font-size: 0.75rem; margin-bottom: 8px; }

.seat-row { display: flex; align-items: center; gap: 3px; margin-bottom: 3px; }
.seat-row .row-num { width: 24px; text-align: right; color: var(--muted); font-size: 0.7rem; flex-shrink: 0; }
.row-features { display: flex; gap: 2px; margin-left: 6px; min-width: 0; }
.feat-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 16px; height: 16px; padding: 0 2px;
  font-size: 0.6rem; line-height: 1; border-radius: 3px;
  background: var(--card-bg); border: 1px solid var(--border); color: var(--fg);
}
.feat-badge.feat-wing { border-color: #3b82f6; color: #3b82f6; }
.feat-badge.feat-bulkhead { border-color: var(--muted); color: var(--muted); font-weight: bold; }
.feat-badge.feat-exit { border-color: var(--danger); color: var(--danger); font-weight: bold; }
.feat-badge.feat-galley { border-color: #d97706; color: #d97706; }
.feat-badge.feat-lavatory { border-color: #0ea5e9; color: #0ea5e9; }
.feat-badge.feat-closet { border-color: var(--muted); color: var(--muted); }

.seat-row.extra-legroom { margin-top: 9px; margin-bottom: 9px; }
.partition-line {
  display: flex; align-items: center; gap: 8px;
  width: 260px; margin: 10px 0 10px 27px;
}
.partition-line::before, .partition-line::after { content: ''; flex: 1; border-top: 3px solid var(--muted); opacity: 0.7; }
.partition-line span { font-size: 0.7rem; color: var(--muted); white-space: nowrap; }
.seat {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  flex-shrink: 0;
}
.seat.gap { width: 10px; }
.seat-O { background: var(--ok); }
.seat-X { background: #9ca3af; }
.seat-B { background: #f59e0b; }
.seat-\$ { background: #3b82f6; }
.seat-unknown { background: transparent; border: 1px dashed var(--border); }

.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 0.75rem; color: var(--muted); margin: 10px 0; }
.legend .sw { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 4px; vertical-align: middle; }

.back-link { display: inline-block; margin-bottom: 12px; font-size: 0.85rem; }