/* Trii - trii-app.com 共通スタイル */
:root {
  --primary: #6C63FF;
  --secondary: #4ECDC4;
  --accent: #FF6B9D;
  --text: #2d3748;
  --text-muted: #718096;
  --bg: #fafafa;
  --card: #fff;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* ヘッダー・ナビ */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
  margin-bottom: 32px;
  border-bottom: 1px solid #e2e8f0;
  background: var(--card);
  margin-left: -20px;
  margin-right: -20px;
  padding-left: 20px;
  padding-right: 20px;
  border-radius: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.site-logo {
  display: block;
  line-height: 0;
  flex-shrink: 0;
}

.site-logo:hover {
  opacity: 0.9;
}

.site-logo img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(108, 99, 255, 0.08);
}

.site-header .nav-links a {
  color: var(--text);
}

.site-header .nav-links a:hover {
  color: var(--primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 言語切替ドロップダウン（国旗付き） */
.lang-dropdown {
  position: relative;
}

.lang-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.lang-dropdown-trigger:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.12);
}

.lang-dropdown-trigger:focus {
  outline: none;
}

.lang-dropdown-trigger:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.lang-flag {
  font-size: 1.25rem;
  line-height: 1;
}

.lang-chevron {
  font-size: 0.5rem;
  opacity: 0.7;
  transition: transform 0.2s ease;
}

.lang-dropdown.is-open .lang-chevron {
  transform: rotate(180deg);
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  padding: 6px;
  background: var(--card);
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.lang-dropdown.is-open .lang-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-option:hover {
  background: rgba(108, 99, 255, 0.08);
  color: var(--primary);
}

.lang-option.is-current {
  background: rgba(108, 99, 255, 0.12);
  color: var(--primary);
  pointer-events: none;
}

.lang-option .lang-flag {
  font-size: 1.125rem;
}

/* ホーム用 */
.hero {
  text-align: center;
  padding: 40px 0 32px;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 16px;
  color: var(--text);
}

.hero-logo {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  margin-bottom: 16px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.hero .tagline {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 24px;
}

/* ストアバッジ */
.store-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

.store-badges a {
  display: block;
  line-height: 0;
}

.store-badges img {
  height: 44px;
  width: auto;
  display: block;
}

.purpose {
  background: var(--card);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  margin: 24px 0 32px;
  text-align: left;
}

.purpose h2 {
  font-size: 1.25rem;
  margin: 0 0 12px;
  color: var(--primary);
}

.purpose p {
  margin: 0 0 12px;
}

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

.features {
  margin: 32px 0;
}

.features h2 {
  font-size: 1.25rem;
  margin: 0 0 16px;
  color: var(--text);
}

.features ul {
  margin: 0;
  padding-left: 1.25rem;
}

.features li {
  margin-bottom: 8px;
}

.cta {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid #e2e8f0;
  text-align: center;
}

.cta p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.footer-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #e2e8f0;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* 規約・プライバシー用 */
.page-title {
  font-size: 1.75rem;
  margin: 0 0 8px;
  color: var(--text);
}

.updated {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 28px;
}

.legal h2 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
  color: var(--text);
}

.legal h3 {
  font-size: 1rem;
  margin: 20px 0 8px;
  color: var(--text);
}

.legal p, .legal ul {
  margin: 0 0 12px;
}

.legal ul {
  padding-left: 1.25rem;
}

.legal li {
  margin-bottom: 4px;
}