/* =============================================
   ピアス穴あけサイト トップページ専用CSS
   シンプルで落ち着いたデザインシステム
   ============================================= */

/* =============================================
   CSS変数定義（カラーパレット）
   ============================================= */
:root {
  /* メインカラー（落ち着いたパープル系） */
  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --primary-light: #8b9aef;
  --primary-lighter: #e8ebfa;
  
  /* テキストカラー */
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-tertiary: #adb5bd;
  
  /* 背景カラー */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  
  /* ボーダーカラー */
  --border-color: #dee2e6;
  --border-light: #e9ecef;
  
  /* シャドウ */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);
  
  /* ボーダー半径 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  /* トランジション */
  --transition: all 0.3s ease;
}

/* =============================================
   ヒーローセクション
   ============================================= */
.hero-section {
  position: relative;
  background: linear-gradient(to right, var(--primary-color) 0%, var(--primary-dark) 100%);
  margin-bottom: 2rem;
}

.hero-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1rem;
  text-align: center;
}

.hero-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: white;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.hero-subtitle {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.25rem;
  font-weight: 400;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.hero-badge {
  background: rgba(255, 255, 255, 0.9);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-color);
}

/* =============================================
   セクション共通スタイル
   ============================================= */
.site-main {
  background: var(--bg-secondary);
  padding: 2rem 0;
}

.section-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

.section-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* =============================================
   選ばれる理由セクション
   ============================================= */
.reasons-section {
  margin-bottom: 2rem;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.reason-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition);
}

.reason-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.reason-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  text-align: center;
}

.reason-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-align: center;
}

.reason-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* =============================================
   人気プランセクション
   ============================================= */
.popular-plans-section {
  background: var(--bg-secondary);
  padding: 1.75rem 1rem;
  margin-bottom: 2rem;
}

.plan-cards {
  max-width: 600px;
  margin: 0 auto;
}

.plan-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.plan-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.plan-rank {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  color: white;
  background: var(--primary-color);
  flex-shrink: 0;
}

.plan-info {
  flex: 1;
}

.plan-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.plan-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.plan-price {
  text-align: right;
}

.plan-amount {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.plan-unit {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
}

/* =============================================
   施術の流れセクション
   ============================================= */
.flow-section {
  margin-bottom: 2rem;
}

.flow-container {
  max-width: 700px;
  margin: 0 auto;
}

.flow-step {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.flow-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.flow-content {
  flex: 1;
}

.flow-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.flow-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* =============================================
   エリア検索セクション
   ============================================= */
.area-search-section {
  margin-bottom: 2rem;
}

.popular-areas {
  margin-bottom: 1.5rem;
}

.popular-label {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  padding: 0 1rem;
}

.area-scroll {
  display: flex;
  gap: 0.625rem;
  overflow-x: auto;
  padding: 0 1rem 0.625rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) var(--bg-tertiary);
}

.area-scroll::-webkit-scrollbar {
  height: 4px;
}

.area-scroll::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 2px;
}

.area-scroll::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 2px;
}

.area-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.625rem 1.25rem;
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-full);
  white-space: nowrap;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
}

.area-badge:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* =============================================
   都道府県アコーディオン
   ============================================= */
.region-accordion {
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-primary);
}

.region-summary {
  background: var(--bg-secondary);
  padding: 0.875rem 1rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
  user-select: none;
}

.region-summary:hover {
  background: var(--bg-tertiary);
}

.region-summary::marker,
.region-summary::-webkit-details-marker {
  display: none;
}

.region-icon {
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

details[open] .region-icon {
  transform: rotate(180deg);
}

.region-content {
  padding: 1rem;
  background: var(--bg-primary);
}

.prefecture-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.625rem;
}

.prefecture-link {
  background: var(--bg-primary);
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  text-align: center;
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  transition: var(--transition);
}

.prefecture-link:hover {
  background: var(--bg-secondary);
  border-color: var(--primary-color);
}

.prefecture-count {
  display: block;
  color: var(--text-tertiary);
  font-size: 0.6875rem;
  margin-top: 0.25rem;
}

/* =============================================
   施術方法セクション
   ============================================= */
.method-section {
  background: var(--bg-secondary);
  padding: 1.75rem 1rem;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-width: 600px;
  margin: 0 auto;
}

.method-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  display: block;
}

.method-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--primary-color);
}

.method-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.method-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.method-description {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin: 0;
}

/* =============================================
   レスポンシブ - タブレット
   ============================================= */
@media (min-width: 768px) {
  .hero-container {
    padding: 3rem 2rem;
  }
  
  .reasons-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .plan-card {
    padding: 1.5rem;
  }
  
  .method-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .prefecture-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* =============================================
   レスポンシブ - デスクトップ
   ============================================= */
@media (min-width: 1024px) {
  .hero-container {
    padding: 3.5rem 2rem;
  }
  
  .prefecture-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* =============================================
   印刷用スタイル
   ============================================= */
@media print {
  .hero-section {
    display: none;
  }
  
  .reason-card,
  .plan-card,
  .method-card {
    break-inside: avoid;
  }
  
  * {
    box-shadow: none !important;
  }
}

/* =============================================
   アクセシビリティ
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}