/* ============================================================
   共通スタイル
   色は :root の変数だけを変えればサイト全体に反映される
   ============================================================ */
:root {
  --bg: #F5F6F8; --panel: #FFFFFF; --text: #1C2126; --sub: #454B52; --faint: #5F666E;
  --line: #E2E5E9; --accent: #2C7A63; --accent-ink: #FFFFFF; --accent-soft: #E3F1EB;
  --track: #D6DBE0; --shadow: 0 1px 2px rgba(16,24,32,.05), 0 6px 20px rgba(16,24,32,.06);
  /* PM2.5の区分色（図の凡例と同じ系統） */
  --lv1: #7FC6A4; --lv2: #F3D77A; --lv3: #EE8B4A; --lv4: #A92B57;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121519; --panel: #1A1E23; --text: #E7E9EC; --sub: #B6BCC3; --faint: #9AA1A9;
    --line: #2A3037; --accent: #6CC2A2; --accent-ink: #0D1915; --accent-soft: #1C3830;
    --track: #363E47; --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #121519; --panel: #1A1E23; --text: #E7E9EC; --sub: #B6BCC3; --faint: #9AA1A9;
  --line: #2A3037; --accent: #6CC2A2; --accent-ink: #0D1915; --accent-soft: #1C3830;
  --track: #363E47; --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.7;
  font-family: "Roboto", "BIZ UDPGothic", "BIZ UDPゴシック", "Hiragino Sans", "Meiryo", sans-serif; }
a { color: var(--accent); }
img { max-width: 100%; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }

/* ---------- ヘッダー ---------- */
.site-header { background: var(--panel); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.brand { white-space: nowrap; display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing: .02em; }
.brand svg { width: 28px; height: 28px; flex: none; }
.brand small { display: block; font-weight: 400; font-size: .7rem; color: var(--sub); letter-spacing: 0; line-height: 1.2; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--sub); text-decoration: none; font-size: .88rem; padding: 6px 10px; border-radius: 8px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--bg); }

/* ---------- 導入 ---------- */
.intro { padding: 26px 0 18px; }
.intro h1 { margin: 0; font-size: clamp(1.35rem, 3.4vw, 1.9rem); line-height: 1.35; letter-spacing: .01em; }
.intro p { margin: 6px 0 0; color: var(--sub); font-size: .92rem; max-width: 60em; }

/* ---------- メイン2カラム（マップ＋判断） ---------- */
.main-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 18px; align-items: start; }
@media (max-width: 960px) { .main-grid { grid-template-columns: 1fr; } }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  padding: 14px 18px; border-bottom: 1px solid var(--line); }
.card-head h2 { margin: 0; font-size: 1.02rem; }
.eyebrow { font-size: .76rem; color: var(--sub); letter-spacing: .08em; font-weight: 500; }

/* タブ */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tab { border: 1px solid var(--line); background: var(--panel); color: var(--text); padding: 5px 12px;
  border-radius: 999px; font: inherit; font-size: .84rem; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 500; }

/* マップ */
.now { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 12px 18px 0; }
.now .t { font-size: clamp(1.05rem, 2.6vw, 1.3rem); font-weight: 700; font-variant-numeric: tabular-nums; }
.now .t small { font-weight: 400; font-size: .78em; color: var(--sub); }
.now .lead { color: var(--sub); font-size: .8rem; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; margin-left: 8px; padding: 0 8px; border-radius: 999px; font-size: .72rem;
  font-weight: 500; background: var(--accent-soft); color: var(--accent); vertical-align: 2px; }
.map { position: relative; margin: 10px 12px 0; background: #fff; border-radius: 10px; overflow: hidden; aspect-ratio: 1500 / 1680; }
.map img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; display: block; }
.map .msg { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; color: #454B52; font-size: .92rem; }

.controls { padding: 12px 18px 16px; }
.row { display: flex; align-items: center; gap: 8px; }
.btn { flex: none; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel);
  color: var(--text); cursor: pointer; display: grid; place-items: center; }
.btn:hover { border-color: var(--accent); }
.btn.play { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn svg { width: 17px; height: 17px; fill: currentColor; }
.slider { position: relative; flex: 1; min-width: 0; margin-left: 4px; }
input[type=range] { width: 100%; margin: 0; height: 26px; background: transparent; -webkit-appearance: none; appearance: none; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px;
  background: linear-gradient(to right, var(--accent) 0 var(--p, 0%), var(--track) var(--p, 0%) 100%); }
input[type=range]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--track); }
input[type=range]::-moz-range-progress { height: 6px; border-radius: 3px; background: var(--accent); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; margin-top: -7px; border-radius: 50%;
  background: #fff; border: 2px solid var(--accent); box-shadow: 0 1px 3px rgba(0,0,0,.25); }
input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 2px solid var(--accent); }
.days { position: relative; height: 20px; margin-top: 2px; font-size: .78rem; color: var(--sub); }
.days > span { position: absolute; transform: translateX(-50%); white-space: nowrap; }
.days > span::before { content: ""; position: absolute; left: 50%; top: -5px; width: 1px; height: 4px; background: var(--sub); opacity: .6; }
.map-foot { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 6px; font-size: .8rem; color: var(--faint); }
.kbd { border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 0 4px; font-size: .7rem; }

/* ---------- 判断パネル ---------- */
.decide-body { padding: 14px 18px 18px; }
.field { display: grid; gap: 4px; margin-bottom: 12px; }
.field label { font-size: .78rem; color: var(--sub); }
.select { width: 100%; font: inherit; font-size: .92rem; color: var(--text); background: var(--panel);
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.seg { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; background: var(--bg); border-radius: 10px; padding: 4px; }
.seg button { border: 0; background: transparent; color: var(--sub); font: inherit; font-size: .8rem; padding: 7px 4px; border-radius: 7px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--panel); color: var(--text); font-weight: 500; box-shadow: 0 1px 2px rgba(0,0,0,.08); }
@media (max-width: 420px) { .seg { grid-template-columns: repeat(2, 1fr); } }

/* 地点の3日間（地点値が公開されているときだけ表示） */
.daycards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 4px 0 14px; }
.daycard { border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; border-top: 4px solid var(--c, var(--line)); }
.daycard .d { font-size: .8rem; color: var(--sub); }
.daycard .v { font-size: 1.3rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.3; }
.daycard .v small { font-size: .62em; font-weight: 400; color: var(--sub); }
.daycard .l { font-size: .74rem; font-weight: 500; }

/* 区分ごとの行動 */
.levels { display: grid; gap: 8px; }
.level { display: grid; grid-template-columns: 6px 1fr; gap: 0 12px; padding: 10px 12px 10px 0; border: 1px solid var(--line); border-radius: 10px; }
.level::before { content: ""; grid-row: 1 / span 3; border-radius: 10px 0 0 10px; background: var(--c); }
.level.on { border-color: var(--text); box-shadow: 0 0 0 1px var(--text) inset; }
.level .h { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.level .name { font-weight: 700; font-size: .9rem; }
.level .range { font-size: .8rem; color: var(--sub); font-variant-numeric: tabular-nums; }
.level ul { margin: 4px 0 0; padding-left: 1.1em; font-size: .84rem; }
.level li + li { margin-top: 2px; }
.callout { margin-top: 14px; padding: 10px 12px; border-radius: 10px; background: var(--accent-soft); font-size: .82rem; }
.callout strong { color: var(--accent); }
.fine { margin-top: 10px; font-size: .8rem; color: var(--faint); }

/* ---------- 下段 ---------- */
.below { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 22px 0 8px; }
@media (max-width: 860px) { .below { grid-template-columns: 1fr; } }
.below .card { padding: 16px 18px; }
.below h3 { margin: 0 0 6px; font-size: .98rem; }
.below p { margin: 0; font-size: .86rem; color: var(--sub); }
.below a.more { display: inline-block; margin-top: 8px; font-size: .86rem; font-weight: 500; }

/* ---------- 下層ページ ---------- */
.page { max-width: 800px; padding: 28px 0 8px; }
.page h1 { font-size: clamp(1.3rem, 3vw, 1.7rem); margin: 0 0 12px; }
.page h2 { font-size: 1.08rem; margin: 28px 0 8px; padding-top: 4px; }
.page p, .page li { font-size: .93rem; }
.page table { width: 100%; border-collapse: collapse; font-size: .88rem; background: var(--panel); border-radius: 10px; overflow: hidden; }
.page th, .page td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.page th { background: var(--bg); font-weight: 500; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: 0; }

/* ---------- フッター ---------- */
.site-footer { margin-top: 28px; border-top: 1px solid var(--line); background: var(--panel); }
.site-footer .wrap { padding: 18px 16px 26px; font-size: .8rem; color: var(--sub); display: grid; gap: 6px; }
.site-footer nav { display: flex; gap: 14px; flex-wrap: wrap; font-size: .8rem; }
.site-footer nav a { color: var(--sub); }

@media (max-width: 560px) {
  .kb-hint { display: none; }
  .days .wd { display: none; }
  .row { flex-wrap: wrap; }
  .slider { flex-basis: 100%; order: -1; margin: 0 0 6px; }
  .site-header .wrap { flex-wrap: wrap; gap: 0; padding-top: 8px; }
  .nav { width: 100%; flex-wrap: nowrap; overflow-x: auto; margin: 4px -6px 6px; }
  .nav a { padding: 6px 8px; font-size: .84rem; white-space: nowrap; }
}

/* ---------- 表示切り替え（1枚 / 4枚並べる） ---------- */
.head-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.viewswitch { display: inline-flex; background: var(--bg); border-radius: 999px; padding: 3px; }
.viewswitch button { border: 0; background: transparent; color: var(--sub); font: inherit; font-size: .8rem; padding: 4px 10px; border-radius: 999px; cursor: pointer; }
.viewswitch button[aria-pressed="true"] { background: var(--panel); color: var(--text); font-weight: 500; box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.grid4 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 10px 12px 0; }
.grid4 .cell { margin: 0; background: #fff; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.grid4 figcaption { font-size: .78rem; font-weight: 500; padding: 5px 8px; color: var(--text); background: var(--panel); border-bottom: 1px solid var(--line); }
.grid4 .cell-img { display: block; width: 100%; padding: 0; border: 0; background: #fff; cursor: zoom-in; aspect-ratio: 1500 / 1680; }
.grid4 img { width: 100%; height: 100%; object-fit: contain; display: block; }
[hidden] { display: none !important; }

.basis { font-size: .78rem; color: var(--sub); margin-top: 6px; }
.basis .nostd { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--bg); border: 1px dashed var(--line); }
.seg button { line-height: 1.3; }

/* ---------- ロゴ（霞 Kasumi） ---------- */
.brand img { width: 38px; height: 38px; flex: none; }
.brand .wm { display: flex; align-items: center; gap: 8px; line-height: 1; }
.brand .wm-ja { font-family: "BIZ UDPGothic", "BIZ UDPゴシック", sans-serif; font-weight: 700; font-size: 1.6rem; letter-spacing: 0; padding-left: 8px; border-left: 1px solid var(--line); }
.brand .wm-en { display: grid; gap: 3px; font-weight: 700; font-size: .95rem; letter-spacing: .06em; }
.brand .wm-en small { display: block; font-weight: 500; font-size: .72rem; letter-spacing: .02em; color: var(--sub); }
.inline-more { white-space: nowrap; margin-left: .4em; font-size: .9em; }
.inline-more::after { content: " →"; }

.page h3 { font-size: .98rem; margin: 20px 0 6px; }
.pubs li + li { margin-top: 6px; }
.pubs strong { color: var(--accent); font-weight: 700; }

/* 日本語の行間と字間（BIZ UDPゴシック向け） */
body { font-feature-settings: "palt" 0; letter-spacing: .01em; }
/* ---------- 団体・企業の方へ ---------- */
.targets { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 12px 0 8px; }
@media (max-width: 640px) { .targets { grid-template-columns: 1fr; } }
.target { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.target h3 { margin: 0 0 4px; font-size: 1rem; }
.target .who { font-size: .82rem; color: var(--sub); margin: 0 0 6px; }
.target ul { margin: 0; padding-left: 1.1em; font-size: .9rem; }
.target li + li { margin-top: 3px; }