/* 色はアプリ（koelog/koelog/Views/Theme.swift）と合わせる */
@font-face {
  font-family: "Inter";
  src: url("/fonts/Inter-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}

:root {
  --bg: #F7F4F1;
  --card: #FFFFFF;
  --text: #2A2523;
  --muted: #6F6863;
  --line: #E6E0DA;
  --accent: #F98061;
  --accent-text: #C2522F;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1A1716;
    --card: #242120;
    --text: #F2EDE9;
    --muted: #A8A09A;
    --line: #36312E;
    --accent-text: #F98061;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ヘッダー */
.site-header {
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}
.logo img { width: 28px; height: 28px; border-radius: 7px; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 16px;
}

/* トップ */
.hero { padding: 64px 0 40px; }
.hero img { width: 88px; height: 88px; border-radius: 20px; }
.hero h1 {
  font-size: clamp(28px, 6vw, 40px);
  line-height: 1.35;
  margin: 24px 0 16px;
  letter-spacing: 0.01em;
}
.hero p { color: var(--muted); margin: 0 0 24px; }
.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

section { padding: 32px 0; }
section h2 { font-size: 22px; margin: 0 0 16px; }

.cards { display: grid; gap: 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .num {
  display: inline-block;
  font-family: "Inter", sans-serif;
  font-weight: 600;
  color: var(--accent-text);
  margin-right: 8px;
}

.flow {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.flow li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
}
.flow li.optional { border-style: dashed; }
.flow strong { display: block; }
.flow span { color: var(--muted); font-size: 14px; }

/* 文書（ポリシー・規約・サポート） */
.doc { padding: 40px 0 24px; }
.doc h1 { font-size: 28px; margin: 0 0 4px; }
.doc .updated { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
.doc h2 { font-size: 20px; margin: 40px 0 12px; padding-top: 8px; }
.doc h3 { font-size: 17px; margin: 24px 0 8px; }
.doc ul, .doc ol { padding-left: 1.4em; }
.doc li { margin: 4px 0; }

.table-wrap { overflow-x: auto; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15px;
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
tr:last-child th, tr:last-child td { border-bottom: none; }
th { white-space: nowrap; color: var(--muted); font-weight: 600; }

.note {
  background: var(--card);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 12px 16px;
}

details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  margin: 8px 0;
}
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--muted); }

/* フッター */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 12px; }
.site-footer a { color: var(--muted); }

@media (max-width: 480px) {
  .site-header nav a { margin-left: 12px; font-size: 13px; }
  .hero { padding-top: 40px; }
}