/* =========================
   Rin Noa Clean Stylesheet
   ========================= */

/* ---------- Tokens ---------- */
:root {
  /* Colors (Light) */
  --color-background: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-text: #1B1B1B;
  --color-text-secondary: #4A4A4A;
  --color-primary: #7A6A5A;        /* accent */
  --color-primary-hover: #6A5A4A;  /* +8% 濃度相当 */
  --color-primary-active: #5A4A3A;
  --color-border: #D8D4CE;
  --color-focus-ring: rgba(122,106,90,0.25);

  /* Typography */
  --font-family-serif: "Noto Serif JP", "Yu Mincho", "YuMincho", "ヒラギノ明朝 ProN", serif;
  --font-family-base: "Noto Sans JP", "ヒラギノ角ゴ ProN", "Hiragino Kaku Gothic ProN", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 28px;
  --font-size-3xl: 32px;
  --font-size-4xl: 40px;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  --line-height-tight: 1.4;
  --line-height-normal: 1.8;  /* >= 1.8 */
  --line-height-relaxed: 2.0;

  --letter-spacing-base: 0.02em;
  --letter-spacing-heading: -0.01em;

  /* Radius */
  --radius-sm: 3px;
  --radius-base: 4px; /* 3–4px 指定 */
  --radius-md: 6px;

  /* Spacing */
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-28: 28px;  /* 引用上下 */
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;

  /* Layout */
  --max-width: 820px;

  /* Motion */
  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;

  --color-on-primary: #FFFFFF;          /* ライト: アクセント#7A6A5A上の文字色 */
  --color-on-primary-hover: #FFFFFF;

 --link: var(--color-primary);
  --link-hover: var(--color-primary-hover);
  --link-visited: var(--color-primary); /* 設計上、色を揃えて一貫性を優先 */
  --link-underline-color: color-mix(in oklab, var(--color-primary) 60%, transparent);

}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0E0E0E;
    --color-surface: #1A1A1A;
    --color-text: #F3F3F1;
    --color-text-secondary: #C0C0C0;
    --color-primary: #BCAFA2;
    --color-primary-hover: #C7BAB0;
    --color-primary-active: #D4C9BE;
    --color-border: rgba(188,175,162,0.25);
    --color-focus-ring: rgba(188,175,162,0.30);

    --color-on-primary: #1B1B1B;        /* ダーク: アクセント#BCAFA2上の文字色 */
    --color-on-primary-hover: #1B1B1B;

    --link: var(--color-primary);          /* #BCAFA2 */
    --link-hover: var(--color-primary-hover); /* #C7BAB0 */
    --link-visited: var(--color-primary);
    --link-underline-color: color-mix(in oklab, var(--color-primary) 60%, transparent);
 

  }
}

/* ---------- Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body { margin: 0; }

a {
  color: var(--color-primary);
  text-decoration-line: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

a:not(.btn):not(.brand-logo) {
  color: var(--link);
  text-decoration-line: none;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--link-underline-color);
  transition: color 200ms ease, text-decoration-color 200ms ease;
}
a:not(.btn):not(.brand-logo):hover {
  color: var(--link-hover);
  text-decoration-color: currentColor;
}
a:not(.btn):not(.brand-logo):visited {
  color: var(--link-visited);
}
a:not(.btn):not(.brand-logo):focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}

img { max-width: 100%; height: auto; display: block; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-serif);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-text);
  margin: 0 0 var(--space-24);
}
h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p { margin: 0 0 var(--space-24); letter-spacing: var(--letter-spacing-base); }

blockquote {
  border-left: 3px solid var(--color-border);
  padding: var(--space-28) var(--space-24);
  margin: var(--space-28) 0;
  background: transparent;
  line-height: var(--line-height-relaxed);
  font-style: italic;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-24);
}

/* Header / Nav */
.header {
  position: sticky;
  top: 0;
  background: color-mix(in oklab, var(--color-surface) 95%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-16) 0;
}
.nav__menu {
  list-style: none;
  display: flex;
  gap: var(--space-24);
  margin: 0;
  padding: 0;
}
.nav__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}
.nav__link:hover { color: var(--color-text); }

/* Logo (SVG uses currentColor) */
.brand-logo { display: block; text-decoration: none; transition: opacity var(--transition-fast); }
.brand-logo:hover { opacity: 0.7; }
.logo-svg { height: 40px; width: auto; color: var(--color-text); }
@media (max-width: 768px) { .logo-svg { height: 34px; } }

.logo img {
  width: 180px;
  height: 50px;
  display: block;
}


/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__image {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.78) saturate(0.92);
}
.hero__content {
  position: relative; z-index: 1;
  width: 100%;
  text-align: center;
  color: #fff;
  padding: var(--space-64) var(--space-24);
}
.hero__title {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  margin-bottom: var(--space-16);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero__subtitle {
  font-size: clamp(var(--font-size-md), 2vw, var(--font-size-lg));
  line-height: var(--line-height-relaxed);
  color: rgba(255,255,255,0.92);
  max-width: 680px;
  margin: 0 auto;
}

/* ---------- Sections ---------- */
.section { padding: var(--space-80) 0; }
.section--alt { background-color: var(--color-surface); }
.section__title { text-align: center; margin-bottom: var(--space-48); }
.section__subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-32);
}
.section__content { max-width: 680px; margin: 0 auto; }

/* Themes / For Whom lists */
.list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: var(--space-16);
}
.list__item {
  position: relative;
  padding: var(--space-16) var(--space-24) var(--space-16) var(--space-48);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}
.list__item::before {
  content: "•";
  position: absolute;
  left: var(--space-16);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
}
.list__item:hover { background: var(--color-primary); color: #fff; }
.list__item:hover::before { color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-12);
  padding: var(--space-12) var(--space-24);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-base);
  cursor: pointer;
  line-height: 1.2;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
}
.btn--primary:hover {
  background: var(--color-primary-hover);  /* +8%濃度 */
  color: var(--color-on-primary-hover);
}
.btn--full { width: 100%; }

/* btn-ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn--ghost:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}



.journal__cta, .form-actions{
  text-align: center;
}


/* ---------- Forms ---------- */
.contact-form { max-width: 520px; margin: 0 auto; }
.form-group { margin-bottom: var(--space-24); }
.form-label {
  display: block; margin-bottom: var(--space-8);
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-text);
}
.form-control {
  width: 100%;
  padding: var(--space-12);
  font-size: var(--font-size-md);
  font-family: var(--font-family-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
textarea.form-control { resize: vertical; min-height: 120px; }
.form-control:focus {
  outline: 2px solid var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}
.checkbox-row {
  display: flex; gap: var(--space-12); align-items: flex-start; font-size: var(--font-size-sm);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-64) 0 var(--space-24);
  margin-top: var(--space-80);
}
.footer__row {
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--space-24); margin-bottom: var(--space-24);
}
.footer__menu { list-style: none; display: flex; gap: var(--space-24); margin: 0; padding: 0; }
.footer__link { color: var(--color-text-secondary); font-size: var(--font-size-sm); }
.footer__link:hover { color: var(--color-text); }
.footer__copy { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin: 0; }
.footer__legal { text-align: center; border-top: 1px solid var(--color-border); padding-top: var(--space-24); }

/* ---------- Privacy Policy Page ---------- */
.privacy-policy-page { max-width: 760px; margin: 0 auto; padding: 4rem 2rem; }
.policy-content h1 { font-size: 2rem; margin-bottom: 3rem; text-align: center; color: var(--color-text); }
.policy-section { margin-bottom: 2.5rem; }
.policy-section h2 {
  font-size: 1.3rem; margin-bottom: 1rem; color: var(--color-text);
  border-bottom: 1px solid var(--color-border); padding-bottom: 0.5rem;
}
.policy-section p { line-height: var(--line-height-normal); margin-bottom: 1rem; }
.policy-section ul { padding-left: 1.5rem; line-height: var(--line-height-normal); }
.policy-section li { margin-bottom: 0.5rem; }
.policy-footer {
  margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--color-border);
  text-align: right; color: var(--color-text-secondary); font-size: 0.9rem;
}

/* ---------- Accessibility ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav { flex-direction: column; gap: var(--space-12); }
  .nav__menu { gap: var(--space-16); }
  .section { padding: var(--space-64) 0; }
  .footer__row { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .nav__link { font-size: var(--font-size-xs); }
  .btn { padding: var(--space-12) var(--space-20); }
}