:root {
  --bg: #fdfbf7;
  --text: #222;
  --muted: #666;
  --line: #ddd;
  --accent: #b5452a;
  --accent-soft: #fbeae4;
  --gram: #0b5d3b;
  --check: #b86e00;
  --card: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1a18;
    --text: #eee;
    --muted: #aaa;
    --line: #444;
    --accent: #f08a68;
    --accent-soft: #3a2721;
    --gram: #7fd8aa;
    --check: #f2b54a;
    --card: #262422;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Hiragino Sans', 'Meiryo', sans-serif;
  font-size: 18px;
  line-height: 1.7;
}
main { max-width: 720px; margin: 0 auto; padding: 12px 16px 48px; }
a { color: var(--accent); }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px; background: var(--accent); color: #fff;
  position: sticky; top: 0; z-index: 1;
}
.topbar a { color: #fff; text-decoration: none; }
.brand { font-weight: bold; font-size: 1.1rem; }
.logout { font-size: 0.9rem; border: 1px solid #fff; border-radius: 6px; padding: 4px 10px; }

.flash { padding: 10px 14px; border-radius: 8px; background: var(--accent-soft); }

.login-title { text-align: center; margin-top: 40px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form label { display: flex; flex-direction: column; font-weight: bold; }
input, button { font-size: 18px; font-family: inherit; }
.login-form input { padding: 12px; border: 1px solid var(--line); border-radius: 8px; margin-top: 4px; }
.btn-main {
  padding: 14px; border: none; border-radius: 10px;
  background: var(--accent); color: #fff; font-weight: bold;
}

.search { display: flex; gap: 8px; margin: 8px 0 4px; }
.search input { flex: 1; min-width: 0; padding: 12px; border: 2px solid var(--accent); border-radius: 10px; background: var(--card); color: var(--text); }
.search button { padding: 0 18px; border: none; border-radius: 10px; background: var(--accent); color: #fff; font-weight: bold; }
.hint { color: var(--muted); font-size: 0.95rem; }

.group h2 { font-size: 1rem; color: var(--muted); border-bottom: 1px solid var(--line); margin: 20px 0 4px; }
.count { font-weight: normal; }
.recipe-list { list-style: none; margin: 0; padding: 0; }
.recipe-list a {
  display: block; padding: 12px 4px; border-bottom: 1px solid var(--line);
  color: var(--text); text-decoration: none;
}

.back { display: inline-block; padding: 8px 0; text-decoration: none; }
h1 { font-size: 1.5rem; margin: 4px 0 0; }
.category { color: var(--muted); margin: 0 0 8px; font-size: 0.9rem; }

.factor { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin-bottom: 12px; }
.factor-label { font-weight: bold; margin-right: 4px; }
.factor-btn {
  display: inline-block; min-width: 52px; text-align: center; padding: 8px 6px; margin: 2px;
  border: 1px solid var(--accent); border-radius: 8px; text-decoration: none;
}
.factor-btn.active { background: var(--accent); color: #fff; }
.factor-free { margin-top: 8px; }
.factor-free input { width: 90px; padding: 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); }
.factor-free button { padding: 6px 12px; border: 1px solid var(--accent); border-radius: 6px; background: var(--card); color: var(--accent); }

.cost { background: var(--accent-soft); border-radius: 10px; padding: 8px 12px; margin-bottom: 12px; }
.cost p { margin: 4px 0; }
.small { font-size: 0.85rem; color: var(--muted); }

.legend { font-size: 0.9rem; color: var(--muted); }
.recipe-body p { margin: 2px 0; overflow-wrap: anywhere; }
.recipe-body h3 { font-size: 1.05rem; margin: 12px 0 4px; }
.recipe-body hr { border: none; border-top: 1px solid var(--line); }
.spacer { height: 10px; }
.gram { color: var(--gram); font-weight: bold; }
.check-wrap { display: inline; }
.check-wrap summary { display: inline; list-style: none; cursor: pointer; }
.check-wrap summary::-webkit-details-marker { display: none; }
.check {
  font-size: 0.75rem; color: var(--check); border: 1px solid var(--check);
  border-radius: 4px; padding: 0 4px; margin-left: 4px; white-space: nowrap;
}
.reason { display: block; font-size: 0.85rem; color: var(--check); }