/* 戸建ての光熱費と補助金: one stylesheet for every page (build_site.py copies it to site/).
   Colours are tokens; tests/test_site.py checks every text pair against WCAG 2.2 AA (4.5:1) in both themes. */
:root {
  color-scheme: light;
  --bg: #f7f6f2;
  --surface: #ffffff;
  --ink: #1b1b19;
  --muted: #57544e;
  --line: #cfcbc1;
  --accent: #1a56b8;
  --open-ink: #125a31;
  --open-bg: #e2f1e7;
  --closed-ink: #474744;
  --closed-bg: #ebeae5;
  --unknown-ink: #7a4100;
  --unknown-bg: #fcefd9;
  --alert-ink: #9a1b1b;
  --alert-bg: #fcebea;
  --ok-ink: #125a31;
  --ok-bg: #e8f4ec;
  --pr-ink: #3b3000;
  --pr-bg: #fbf1c7;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 100%;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1c1c1a;
    --ink: #ecebe6;
    --muted: #b3b0a8;
    --line: #3d3b37;
    --accent: #8fb6ff;
    --open-ink: #8fdcaa;
    --open-bg: #163020;
    --closed-ink: #d0cec8;
    --closed-bg: #2c2b28;
    --unknown-ink: #f4c27c;
    --unknown-bg: #35270f;
    --alert-ink: #ffaca5;
    --alert-bg: #3a1a18;
    --ok-ink: #8fdcaa;
    --ok-bg: #163020;
    --pr-ink: #f2e6b0;
    --pr-bg: #2f2a16;
  }
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--ink); overflow-wrap: anywhere; }
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img, svg { max-width: 100%; }

.skip { position: absolute; left: -9999px; top: 0; padding: 8px 12px; background: var(--surface); color: var(--accent); }
.skip:focus { left: 8px; top: 8px; z-index: 10; }

/* 景品表示法（ステマ規制）: the first thing on every page */
.pr-bar { margin: 0; padding: 8px 16px; background: var(--pr-bg); color: var(--pr-ink); font-size: .875rem; line-height: 1.6; text-align: center; }
.pr-bar strong { font-weight: 700; }
.pr-bar a { color: inherit; }

.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px; width: min(100% - 32px, 960px); margin: 0 auto; padding: 12px 0; }
.brand { color: var(--ink); font-size: 1.125rem; font-weight: 700; text-decoration: none; letter-spacing: .02em; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: .9375rem; }
.site-nav a { color: var(--ink); text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { border-bottom-color: var(--accent); }

.page { width: min(100% - 32px, 960px); margin: 0 auto; padding: 8px 0 48px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 0 4px; margin: 12px 0 0; padding: 0; list-style: none; font-size: .875rem; color: var(--muted); }
.crumbs li + li::before { content: "›"; margin: 0 6px 0 2px; color: var(--muted); }
.crumbs a { color: var(--muted); }

h1 { margin: 20px 0 8px; font-size: clamp(1.5rem, 4.6vw, 2.125rem); line-height: 1.35; letter-spacing: .01em; }
h2 { margin: 40px 0 12px; font-size: clamp(1.25rem, 3.4vw, 1.5rem); line-height: 1.45; }
h3 { margin: 0 0 8px; font-size: 1.125rem; line-height: 1.5; }
p, ul, ol, dl { margin: 0 0 12px; }
.lede { max-width: 46em; color: var(--muted); font-size: 1.0625rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.note { color: var(--muted); font-size: .9375rem; }

/* Entrances on the home page */
.entrances { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 24px 0 8px; }
.entrance { display: block; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); color: var(--ink); text-decoration: none; }
.entrance:hover { border-color: var(--accent); }
.entrance strong { display: block; margin-bottom: 4px; color: var(--accent); font-size: 1.1875rem; }
.entrance span { color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; padding: 0; list-style: none; }
.chips a, .chip { display: inline-block; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--ink); text-decoration: none; font-size: .9375rem; }
.chips a:hover { border-color: var(--accent); color: var(--accent); }
.equip { display: inline-block; margin: 0 4px 4px 0; padding: 0 8px; border-radius: 6px; background: var(--closed-bg); color: var(--closed-ink); font-size: .8125rem; line-height: 1.8; }

/* Status badges: the words carry the meaning, the colour only helps */
.badge { display: inline-block; padding: 1px 10px; border-radius: 6px; font-weight: 700; font-size: .9375rem; white-space: nowrap; }
.badge.open { background: var(--open-bg); color: var(--open-ink); }
.badge.closed { background: var(--closed-bg); color: var(--closed-ink); }
.badge.unknown { background: var(--unknown-bg); color: var(--unknown-ink); }
.status-line { margin: 0 0 8px; }
.status-line .detail { color: var(--muted); }

.scheme { margin: 16px 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.scheme h3 a { color: var(--ink); }
.scheme .meta { margin: 12px 0 0; color: var(--muted); font-size: .875rem; }
.scheme .meta p { margin: 0 0 4px; }
.facts { margin: 12px 0 0; }
.facts dt { font-weight: 700; }
.facts dd { margin: 0 0 8px; }

/* 業者制限あり・事前申請が必要: a reader must not miss these */
.flags { margin: 12px 0 0; padding: 0; list-style: none; }
.flag { margin: 0 0 8px; padding: 8px 12px; border-left: 5px solid; border-radius: 6px; }
.flag strong { font-weight: 700; }
.flag.alert { border-color: var(--alert-ink); background: var(--alert-bg); color: var(--ink); }
.flag.alert strong { color: var(--alert-ink); }
.flag.ok { border-color: var(--ok-ink); background: var(--ok-bg); color: var(--ink); }
.flag.ok strong { color: var(--ok-ink); }
.flag.none { border-color: var(--line); background: var(--bg); color: var(--muted); }
.flag .why { display: block; color: var(--muted); font-size: .875rem; }

blockquote { margin: 6px 0 8px; padding: 6px 12px; border-left: 3px solid var(--line); color: var(--ink); font-size: .9375rem; }
blockquote p { margin: 0; }
details { margin: 8px 0; }
summary { cursor: pointer; color: var(--accent); }
.amounts { margin: 4px 0 8px; padding-left: 1.25em; }

/* Tables scroll inside their box on a phone instead of widening the page */
.table-wrap { overflow-x: auto; margin: 0 0 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
th, td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { background: var(--bg); font-size: .875rem; white-space: nowrap; }
tbody th { white-space: nowrap; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tag { display: inline-block; margin: 0 4px 2px 0; padding: 0 6px; border-radius: 4px; font-size: .8125rem; font-weight: 700; white-space: nowrap; }
.tag.alert { background: var(--alert-bg); color: var(--alert-ink); }

.legend { display: grid; gap: 8px; margin: 0 0 12px; padding: 0; list-style: none; }
.legend li { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }

/* Advertising slots: empty frames until an ASP is registered (site_config.json) */
.pr-slot { margin: 32px 0; padding: 16px 20px; border: 1px dashed var(--line); border-radius: 14px; background: var(--surface); }
.pr-slot .pr-label { display: inline-block; margin-bottom: 6px; padding: 0 8px; border-radius: 4px; background: var(--pr-bg); color: var(--pr-ink); font-size: .8125rem; font-weight: 700; }
.pr-slot h2 { margin: 0 0 6px; font-size: 1.125rem; }
.pr-slot .button { display: inline-block; margin-top: 4px; padding: 10px 18px; border-radius: 10px; background: var(--accent); color: var(--surface); font-weight: 700; text-decoration: none; }
.pr-slot .pixel { width: 1px; height: 1px; border: 0; }

/* LP gas check */
.calc { margin: 16px 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.calc .field { display: grid; gap: 4px; margin: 0 0 14px; }
.calc label { font-weight: 700; }
.calc .hint { color: var(--muted); font-size: .875rem; }
.calc input, .calc select { width: 100%; max-width: 20em; min-height: 44px; padding: 8px 10px; border: 1px solid var(--muted); border-radius: 8px; background: var(--surface); color: var(--ink); font: inherit; }
.calc button { min-height: 44px; padding: 8px 22px; border: 0; border-radius: 10px; background: var(--accent); color: var(--surface); font: inherit; font-weight: 700; cursor: pointer; }
.result { margin: 16px 0 0; }
.result:empty { display: none; }
.result .verdict { margin: 0 0 8px; font-size: 1.25rem; font-weight: 700; }
.result .error { color: var(--alert-ink); font-weight: 700; }

.site-footer { border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: .875rem; }
.site-footer .inner { width: min(100% - 32px, 960px); margin: 0 auto; padding: 20px 0 32px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 10px; }
.site-footer a { color: var(--accent); }

@media (min-width: 720px) {
  :root { font-size: 106.25%; }
}
@media print {
  .pr-slot, .site-nav, .skip { display: none; }
}