/* 法的ページ共通スタイル（tokushoho, privacy-policy, terms-of-service）
   HP2 のデザイントークンを踏襲した単独スタイルシート */

:root {
  --font-heading: "Aptos Display", "Segoe UI Variable Display", "Bahnschrift", "Yu Gothic UI", sans-serif;
  --font-body: "Aptos", "Segoe UI Variable", "Hiragino Sans", "Yu Gothic UI", sans-serif;

  --color-bg: #f4f1ea;
  --color-surface: #ffffff;
  --color-surface-alt: #f2f5f8;
  --color-text: #152136;
  --color-text-soft: #57647a;
  --color-text-faint: #5a6577;
  --color-text-inverse: #f4f7fb;
  --color-border: rgba(21, 33, 54, 0.12);
  --color-border-strong: rgba(21, 33, 54, 0.18);
  --color-brand: #0f4f7d;
  --color-brand-strong: #0a3554;
  --color-brand-soft: #dceaf5;
  --color-accent: #c17b36;
  --color-accent-soft: #f5e2cd;
  --color-warning: #c17b36;
  --color-warning-soft: rgba(245, 226, 205, 0.45);
  --color-danger: #b4302f;
  --color-danger-soft: rgba(254, 242, 242, 0.8);

  --space-050: 4px;
  --space-100: 8px;
  --space-150: 12px;
  --space-200: 16px;
  --space-250: 20px;
  --space-300: 24px;
  --space-400: 32px;
  --space-500: 40px;
  --space-600: 48px;
  --space-700: 56px;
  --space-800: 64px;
  --space-900: 72px;
  --space-1000: 88px;

  --radius-100: 14px;
  --radius-200: 20px;
  --radius-300: 28px;
  --radius-400: 36px;
  --radius-round: 999px;

  --shadow-soft: 0 20px 50px rgba(16, 32, 56, 0.08);
  --shadow-card: 0 32px 70px rgba(16, 32, 56, 0.12);

  --container-width: 1200px;
  --legal-content-width: 820px;
  --transition-fast: 0.18s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(193, 123, 54, 0.12), transparent 26%),
    radial-gradient(circle at right 10% top 12%, rgba(15, 79, 125, 0.14), transparent 28%),
    linear-gradient(180deg, #f8f6f0 0%, var(--color-bg) 22%, #f7f8fb 100%);
  line-height: 1.7;
}

main,
section {
  position: relative;
}

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus-visible {
  text-decoration: underline;
  color: var(--color-brand-strong);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  margin: 0;
}

.container {
  width: min(calc(100% - 48px), var(--container-width));
  margin: 0 auto;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(248, 246, 240, 0.7);
  border-bottom: 1px solid rgba(21, 33, 54, 0.06);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-300);
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-150);
  min-width: 0;
  color: inherit;
}

.brand:hover,
.brand:focus-visible {
  text-decoration: none;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 10px);
  gap: 4px;
  padding: 6px;
  border-radius: var(--radius-100);
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-strong) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.brand-mark span {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.92);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.brand-text span {
  color: var(--color-text-faint);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-300);
  font-size: 0.94rem;
  color: var(--color-text-soft);
}

.site-nav a {
  position: relative;
  color: inherit;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--color-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  text-decoration: none;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 var(--space-250);
  border-radius: var(--radius-round);
  border: 1px solid var(--color-border-strong);
  background: rgba(255, 255, 255, 0.58);
  font-weight: 600;
  color: var(--color-text);
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast),
    background var(--transition-fast);
}

.header-link:hover,
.header-link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(15, 79, 125, 0.28);
  background: rgba(255, 255, 255, 0.88);
  text-decoration: none;
}

/* ========== Hero ========== */
.legal-hero {
  overflow: clip;
  padding: var(--space-900) 0 var(--space-500);
}

.legal-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(21, 33, 54, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 33, 54, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 88%);
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.75;
  pointer-events: none;
}

.hero-orb-left {
  top: -80px;
  left: -90px;
  background: rgba(193, 123, 54, 0.18);
}

.hero-orb-right {
  top: 40px;
  right: -120px;
  background: rgba(15, 79, 125, 0.18);
}

.legal-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--legal-content-width);
  margin: 0 auto;
}

.legal-hero-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-300);
  flex-wrap: wrap;
}

.legal-hero-row .legal-hero-copy {
  flex: 1 1 auto;
  min-width: 0;
}

.eyebrow {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brand);
}

.legal-hero h1 {
  margin-top: var(--space-200);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
}

.legal-hero-lead {
  margin-top: var(--space-250);
  color: var(--color-text-soft);
  font-size: 1.02rem;
  max-width: 640px;
}

/* ========== Body ========== */
.legal-body {
  padding: 0 0 var(--space-900);
}

.legal-content {
  max-width: var(--legal-content-width);
  margin: 0 auto;
}

.legal-content h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.75rem);
  margin-top: var(--space-700);
  margin-bottom: var(--space-250);
  padding-bottom: var(--space-150);
  border-bottom: 1px solid var(--color-border);
}

.legal-content h3 {
  font-size: 1.15rem;
  margin-top: var(--space-400);
  margin-bottom: var(--space-150);
  color: var(--color-text);
}

.legal-content h4 {
  font-size: 1rem;
  margin-top: var(--space-300);
  margin-bottom: var(--space-100);
  color: var(--color-text);
}

.legal-content p {
  margin-bottom: var(--space-200);
  color: var(--color-text);
}

.legal-content ol,
.legal-content ul {
  padding-left: var(--space-300);
  margin: 0 0 var(--space-250);
}

.legal-content li {
  margin-bottom: var(--space-100);
  color: var(--color-text-soft);
}

.legal-content li strong {
  color: var(--color-text);
}

.legal-content strong {
  color: var(--color-text);
}

/* 情報カード */
.meta-info {
  display: grid;
  gap: var(--space-050);
  padding: var(--space-300) var(--space-400);
  margin-bottom: var(--space-500);
  border-radius: var(--radius-200);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.meta-info p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--color-text-soft);
}

.meta-info strong {
  color: var(--color-text);
}

/* Notice */
.notice {
  padding: var(--space-300) var(--space-400);
  border-radius: var(--radius-200);
  margin: var(--space-300) 0;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.notice-info {
  border-left: 4px solid var(--color-brand);
}

.notice-warning {
  border-left: 4px solid var(--color-warning);
  background: var(--color-warning-soft);
}

.notice-critical {
  border-left: 4px solid var(--color-danger);
  background: var(--color-danger-soft);
}

.notice-contact {
  border-left: 4px solid var(--color-brand);
}

.notice p {
  margin-bottom: var(--space-100);
}

.notice p:last-child {
  margin-bottom: 0;
}

.notice ul,
.notice ol {
  margin-bottom: 0;
}

.notice h4 {
  margin-top: var(--space-200);
}

.notice h4:first-child {
  margin-top: 0;
}

/* テーブル */
.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-200) 0 var(--space-300);
  font-size: 0.94rem;
  border-radius: var(--radius-200);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: rgba(255, 255, 255, 0.82);
}

.legal-content th,
.legal-content td {
  border: 1px solid var(--color-border);
  padding: var(--space-200) var(--space-250);
  text-align: left;
  vertical-align: top;
}

.legal-content th {
  background: rgba(15, 79, 125, 0.06);
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-heading);
  letter-spacing: 0.01em;
}

.legal-content td {
  color: var(--color-text-soft);
}

.legal-content td strong {
  color: var(--color-text);
}

/* コード・注釈 */
.legal-content code {
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(15, 79, 125, 0.08);
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.9em;
  color: var(--color-brand-strong);
}

.sub-note {
  font-size: 0.88em;
  color: var(--color-text-faint);
}

/* 定義ボックス */
.definition-box {
  padding: var(--space-300) var(--space-400);
  border-radius: var(--radius-200);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  margin: var(--space-250) 0 var(--space-300);
}

.definition-box ol {
  padding-left: var(--space-300);
  margin: 0;
}

.definition-box li {
  color: var(--color-text-soft);
}

/* 変更履歴 */
.change-history {
  margin-top: var(--space-700);
  padding-top: var(--space-400);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-soft);
  font-size: 0.92rem;
}

.change-history h2 {
  border-bottom: none;
  margin-top: 0;
  padding-bottom: 0;
  font-size: 1.05rem;
  color: var(--color-text-soft);
}

.change-history h3 {
  margin-top: var(--space-250);
  font-size: 0.95rem;
  color: var(--color-text-soft);
}

.change-history p,
.change-history ul {
  margin: var(--space-100) 0;
}

/* 言語切替 */
.lang-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  align-self: flex-start;
}

.lang-switch button {
  appearance: none;
  background: transparent;
  color: var(--color-text-soft);
  border: 0;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 18px;
  border-radius: var(--radius-round);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.lang-switch button:hover {
  color: var(--color-text);
}

.lang-switch button.active {
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-strong) 100%);
  color: var(--color-text-inverse);
  box-shadow: 0 8px 20px rgba(15, 79, 125, 0.24);
}

.content-lang {
  display: none;
}

.content-lang.active {
  display: block;
}

/* ユーティリティ（CSP の style-src 'self' 厳格化のためインラインスタイルを置換） */
.is-hidden {
  display: none;
}

.text-italic {
  font-style: italic;
}

/* tokushoho 固有: テーブル見出しの折り返し制御 */
.legal-content--tokushoho th {
  white-space: nowrap;
}

.legal-content--tokushoho td small {
  color: var(--color-text-faint);
}

@media (max-width: 600px) {
  .legal-content--tokushoho th {
    white-space: normal;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* フッター */
.site-footer {
  padding: 0 0 var(--space-500);
}

.footer-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-300);
  padding-top: var(--space-400);
  border-top: 1px solid rgba(21, 33, 54, 0.08);
  flex-wrap: wrap;
}

.footer-brand strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--color-text);
}

.footer-brand p {
  margin-top: var(--space-050);
  color: var(--color-text-faint);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-250);
}

.footer-links a {
  color: var(--color-text-soft);
  font-size: 0.94rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-brand);
  text-decoration: none;
}

.footer-copy {
  white-space: nowrap;
  color: var(--color-text-faint);
  font-size: 0.9rem;
}

:focus-visible {
  outline: 3px solid var(--color-brand);
  outline-offset: 3px;
}

/* レスポンシブ */
@media (max-width: 900px) {
  .site-nav,
  .header-link {
    display: none;
  }

  .legal-content table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 32px), var(--container-width));
  }

  .site-header {
    backdrop-filter: blur(12px);
  }

  .header-row {
    min-height: 70px;
  }

  .legal-hero {
    padding: var(--space-800) 0 var(--space-400);
  }

  .legal-body {
    padding-bottom: var(--space-700);
  }

  .meta-info,
  .notice,
  .definition-box {
    padding: var(--space-250) var(--space-300);
  }

  .change-history {
    padding: var(--space-400) var(--space-300);
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-copy {
    white-space: normal;
  }
}

/* スキップリンク - キーボードフォーカス時のみ表示（WCAG 2.4.1） */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-200);
  z-index: 100;
  padding: var(--space-150) var(--space-250);
  border-radius: var(--radius-100);
  background: var(--color-brand);
  color: var(--color-text-inverse);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-150);
  outline: 3px solid var(--color-text-inverse);
  outline-offset: 2px;
}

/* モーション抑制ユーザー向けの一括無効化（WCAG 2.3.3 / 2.2.2） */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .header-link:hover,
  .header-link:focus-visible {
    transform: none !important;
  }
}