/* ==========================================================
   千神流「赦す技術」 brand.css
   2層構造：
   1) Brand layer … 全ページ共通（書体・金・余白・部品）
   2) Theme layer … data-theme で切替
        sakura = ホームページ（/）
        indigo = プロジェクト①「男性を赦す」（/karma/ 以下）
   ========================================================== */

/* ---------- 1) Brand layer ---------- */
:root {
  --font-serif: 'Shippori Mincho', 'Noto Serif JP', '游明朝', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;

  --gold: #a8906e;
  --gold-light: #cdbfa0;
  --white: #fffdfb;
  --line-green: #06C755;
  --line-green-hover: #05b04c;

  --space-section: 104px;
  --space-section-sp: 72px;
  --width-content: 680px;
  --radius: 2px;
}

/* ---------- 2) Theme layer ---------- */
[data-theme="sakura"] {
  --bg: #faf8f5;
  --bg-deep: #f2ede6;
  --bg-dark: #2c2420;
  --text: #221c19;
  --text-light: #54453c;
  --text-on-dark: #fffdfb;
  --accent: #c47690;
  --accent-soft: #e0a8bc;
  --accent-pale: #f3d8e2;
}

[data-theme="indigo"] {
  --bg: #f7f6f3;
  --bg-deep: #ecebf0;
  --bg-dark: #161b33;
  --bg-dark-2: #222a4d;
  --text: #1b1d2a;
  --text-light: #4a4c5e;
  --text-on-dark: #f4f2ee;
  --text-on-dark-soft: rgba(244, 242, 238, 0.72);
  --accent: #34407a;
  --accent-soft: #7b86bd;
  --accent-pale: #dfe2f1;

  /* 4類型の色（診断で使用） */
  --type-seijo: #4f4aa8;
  --type-otome: #9b3a5c;
  --type-miko: #1f6e5a;
  --type-ressho: #9a4a24;
}

/* ---------- Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 17px; }
body {
  font-family: var(--font-serif);
  color: var(--text);
  background: var(--bg);
  line-height: 2;
  letter-spacing: 0.06em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }

/* ---------- Layout parts ---------- */
.section { padding: var(--space-section) 24px; }
.section--deep { background: var(--bg-deep); }
.section--white { background: var(--white); }
.section--dark { background: linear-gradient(170deg, var(--bg-dark) 0%, var(--bg-dark-2, var(--bg-dark)) 100%); color: var(--text-on-dark); }
.inner { max-width: var(--width-content); margin: 0 auto; }

.label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 16px;
}
.heading {
  font-size: clamp(1.45rem, 4vw, 2rem);
  font-weight: 400;
  text-align: center;
  line-height: 1.9;
  letter-spacing: 0.08em;
  margin-bottom: 48px;
  word-break: auto-phrase;
  text-wrap: balance;
}
.heading em { font-style: normal; color: var(--accent); }
.section--dark .heading em { color: var(--gold-light); }
.body { font-size: 1rem; font-weight: 400; line-height: 2.3; color: var(--text-light); }
.body p + p { margin-top: 1.8em; }
.body strong { color: var(--text); font-weight: 600; }
.center { text-align: center; }

.rule {
  height: 1px; max-width: 120px; margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--gold-light), transparent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 18px 40px;
  font-family: var(--font-serif); font-size: 1rem; font-weight: 500;
  letter-spacing: 0.12em; text-decoration: none;
  border: none; border-radius: var(--radius); cursor: pointer;
  transition: transform .3s ease, box-shadow .3s ease, background .3s ease, opacity .3s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--gold { background: var(--gold); color: #fff; }
.btn--gold:hover { box-shadow: 0 8px 28px rgba(168, 144, 110, 0.35); }
.btn--line { background: var(--line-green); color: #fff; }
.btn--line:hover { background: var(--line-green-hover); box-shadow: 0 8px 28px rgba(6, 199, 85, 0.3); }
.btn--ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent-soft); }
.btn-note { margin-top: 14px; font-size: 0.75rem; letter-spacing: 0.08em; opacity: 0.7; }

/* ---------- Photo placeholder ---------- */
.ph {
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: var(--bg-deep); color: var(--text-light);
  border: 1px dashed var(--accent-soft);
  font-family: var(--font-sans); font-size: 0.8rem; letter-spacing: 0.08em; line-height: 1.8;
  padding: 16px;
}

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease-out, transform .8s ease-out; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Footer ---------- */
.site-footer { padding: 48px 24px; text-align: center; background: var(--bg); }
.site-footer small { font-size: 0.7rem; letter-spacing: 0.12em; color: var(--text-light); }
.site-footer a { font-size: 0.8rem; color: var(--text-light); }
.site-footer nav { margin-bottom: 16px; display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

@media (max-width: 768px) {
  html { font-size: 16px; }
  .section { padding: var(--space-section-sp) 20px; }
  .heading { margin-bottom: 36px; }
  .btn { padding: 17px 28px; width: 100%; max-width: 360px; }
}