/* 株式会社カチカチヤマワークス アプリサポートサイト 共通スタイル
 *
 * 配色は「たなどこ？」のアプリ内デザイン（ネイビー＋ミント）に合わせてある。
 * 明るいテーマを基準に定義し、ダークは変数だけ差し替える。 */

:root {
  --ground: #F1F4F8;
  --surface: #FFFFFF;
  --surface-sunk: #E8ECF3;
  --ink: #16202F;
  --ink-muted: #58647A;
  --ink-faint: #8B96A8;
  --line: #D6DDE7;
  --line-strong: #AEB9C8;
  --mint: #0E7A5A;
  --mint-soft: #DFF3EC;
  --mint-line: #7FCBB2;
  --amber: #8A5610;
  --amber-soft: #FAEFDA;
  --amber-line: #D9A85E;
  --btn-bg: #0F1A30;
  --btn-fg: #F4F7FB;
  --pair-a: #DFF3EC;
  --pair-a-line: #7FCBB2;
  --pair-b: #E3EBF9;
  --pair-b-line: #93B4E2;
  --shadow: 0 1px 2px rgba(15, 26, 48, .06), 0 8px 24px rgba(15, 26, 48, .07);

  --step: clamp(1rem, .82rem + .75vw, 1.0625rem);
  --sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium",
          "Yu Gothic", "Noto Sans JP", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Courier New", "Hiragino Sans", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0B1320;
    --surface: #141F31;
    --surface-sunk: #0F1A2A;
    --ink: #E6ECF4;
    --ink-muted: #9AA7BA;
    --ink-faint: #6E7C91;
    --line: #263449;
    --line-strong: #3A4B65;
    --mint: #52D3A8;
    --mint-soft: #10352B;
    --mint-line: #2C7A61;
    --amber: #EDAE4E;
    --amber-soft: #33260F;
    --amber-line: #7A5A22;
    --btn-bg: #52D3A8;
    --btn-fg: #06201A;
    --pair-a: #10352B;
    --pair-a-line: #2C7A61;
    --pair-b: #15263D;
    --pair-b-line: #3A5C85;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: clamp(1.5rem, 1rem + 3vw, 3.5rem) clamp(1rem, .6rem + 2vw, 2rem) 5rem;
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 1.5rem + 2vw, 3rem);
}

h1, h2, h3 { text-wrap: balance; margin: 0; line-height: 1.4; }
p, ul, ol { margin: 0; }
p { color: var(--ink-muted); }
strong { color: var(--ink); font-weight: 700; }
a { color: var(--mint); }
a:focus-visible { outline: 2px solid var(--mint); outline-offset: 2px; border-radius: 3px; }
code { font-family: var(--mono); font-size: .875em; }

.eyebrow {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--ink-faint);
  margin: 0 0 .75rem;
}

h1 {
  font-size: clamp(1.625rem, 1.3rem + 1.8vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
}

.lede { color: var(--ink-muted); margin-top: .875rem; max-width: 34em; }
.meta { font-family: var(--mono); font-size: .8125rem; color: var(--ink-faint); margin-top: 1rem; }

/* パンくず */
.crumbs { font-size: .8125rem; color: var(--ink-faint); }
.crumbs a { color: var(--ink-muted); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

section { display: flex; flex-direction: column; gap: 1rem; }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding-bottom: .625rem;
  border-bottom: 1px solid var(--line);
}

.sec-num {
  font-family: var(--mono);
  font-size: .8125rem;
  font-weight: 700;
  color: var(--mint);
  flex: none;
}

h2 { font-size: clamp(1.125rem, 1rem + .6vw, 1.375rem); font-weight: 700; }
h3 { font-size: .9375rem; font-weight: 700; margin-top: .5rem; }

ul, ol { padding-left: 1.25rem; display: flex; flex-direction: column; gap: .375rem; }
li { color: var(--ink-muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.125rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.callout {
  border-left: 3px solid var(--mint-line);
  background: var(--mint-soft);
  padding: .875rem 1.125rem;
  border-radius: 0 8px 8px 0;
}
.callout p { color: var(--ink); }

.note {
  border-left: 3px solid var(--amber-line);
  background: var(--amber-soft);
  padding: .875rem 1.125rem;
  border-radius: 0 8px 8px 0;
  font-size: .9375rem;
}
.note p, .note { color: var(--ink); }

.btn {
  font: inherit;
  font-weight: 700;
  align-self: flex-start;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  border-radius: 8px;
  padding: .625rem 1.25rem;
  text-decoration: none;
  cursor: pointer;
  transition: opacity .12s ease;
}
.btn:hover { opacity: .9; }
.btn:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }

pre {
  margin: 0;
  padding: .875rem 1rem;
  background: var(--surface-sunk);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--ink);
}

.table-scroll { overflow-x: auto; }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 30rem;
  font-size: .9375rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
}
th, td { text-align: left; padding: .625rem .875rem; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--surface-sunk); font-weight: 700; font-size: .875rem; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 700; white-space: nowrap; }
td { color: var(--ink-muted); }

details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .875rem 1.125rem;
}
summary {
  cursor: pointer;
  font-weight: 700;
  font-size: .9375rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "＋"; color: var(--ink-faint); font-weight: 400; flex: none; }
details[open] summary::after { content: "−"; }
summary:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 4px; }
details p { margin-top: .625rem; color: var(--ink-muted); font-size: .9375rem; }

.faq { display: flex; flex-direction: column; gap: .75rem; }

footer {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  font-size: .8125rem;
  color: var(--ink-faint);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
footer a { color: var(--ink-muted); }