/* ===================================
   さきこヨガ - メインスタイルシート
   カラーパレット: ナチュラル・癒し系
=================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600&family=Noto+Sans+JP:wght@300;400;500&display=swap');

/* ---------- カスタムプロパティ ---------- */
:root {
  --color-bg:       #FAFAF8;
  --color-bg-soft:  #F2F0EC;
  --color-accent:   #8BAF8B;
  --color-accent-d: #6A9070;
  --color-accent-l: #C5D9C5;
  --color-text:     #4A4A4A;
  --color-text-l:   #7A7A7A;
  --color-border:   #E0DDD8;
  --color-white:    #FFFFFF;

  --font-serif: 'Noto Serif JP', serif;
  --font-sans:  'Noto Sans JP', sans-serif;

  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.07);
  --transition: 0.3s ease;

  --max-width: 1080px;
  --nav-height: 64px;
}

/* ---------- リセット ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: var(--font-sans); cursor: pointer; border: none; background: none; }

/* ---------- タイポグラフィ ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
}
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }

/* ---------- レイアウト ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section--soft { background: var(--color-bg-soft); }

/* セクションタイトル */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--color-text-l); font-size: 0.95rem; }
.section-header::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-accent);
  margin: 16px auto 0;
}

/* ---------- ナビゲーション ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  color: var(--color-accent-d);
}
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-l);
  transition: color var(--transition);
  letter-spacing: 0.03em;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-accent-d); }
.nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.875rem !important;
  transition: background var(--transition) !important;
}
.nav-cta:hover { background: var(--color-accent-d) !important; }

/* ハンバーガーメニュー */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ---------- ヒーローセクション ---------- */
.hero {
  margin-top: var(--nav-height);
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.75);
}
.hero-content {
  position: relative;
  z-index: 1;
  color: var(--color-white);
  padding: 60px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  opacity: 0.85;
  margin-bottom: 16px;
}
.hero-content h1 { color: var(--color-white); margin-bottom: 20px; }
.hero-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 2;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: all var(--transition);
  font-family: var(--font-sans);
  font-weight: 500;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-accent-d);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(107,144,112,0.4);
}
.btn-outline {
  border: 2px solid var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-accent-d);
}
.btn-outline-green {
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
}
.btn-outline-green:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* ---------- カードグリッド ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}
.card-img { aspect-ratio: 4/3; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 24px; }
.card-body h3 { margin-bottom: 8px; }
.card-body p { color: var(--color-text-l); font-size: 0.9rem; }
.card-tag {
  display: inline-block;
  background: var(--color-accent-l);
  color: var(--color-accent-d);
  font-size: 0.75rem;
  padding: 3px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}

/* ---------- 料金カード ---------- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.price-card {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
}
.price-card:hover,
.price-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}
.price-card.featured { background: var(--color-accent); color: var(--color-white); }
.price-card.featured h3,
.price-card.featured .price-amount,
.price-card.featured .price-unit { color: var(--color-white); }
.price-label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.price-card.featured .price-label { color: rgba(255,255,255,0.8); }
.price-card h3 { margin-bottom: 24px; }
.price-amount {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--color-text);
  line-height: 1;
}
.price-unit { font-size: 0.85rem; color: var(--color-text-l); margin-top: 4px; }
.price-features {
  margin: 28px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.price-features li {
  font-size: 0.9rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}
.price-card.featured .price-features li { border-color: rgba(255,255,255,0.3); }

/* ---------- スケジュールテーブル ---------- */
.schedule-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.schedule-table th {
  background: var(--color-accent);
  color: var(--color-white);
  padding: 16px 20px;
  font-weight: 500;
  font-size: 0.9rem;
  text-align: left;
}
.schedule-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  vertical-align: middle;
}
.schedule-table tr:last-child td { border-bottom: none; }
.schedule-table tr:hover td { background: var(--color-bg-soft); }
.schedule-class {
  font-weight: 500;
  color: var(--color-text);
}
.schedule-empty {
  text-align: center;
  color: var(--color-text-l);
  padding: 48px 20px;
  font-size: 0.9rem;
}

/* ---------- ブログ ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 32px;
}
.post-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition);
}
.post-card:hover { transform: translateY(-4px); }
.post-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.post-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--color-text-l);
}
.post-card-body h3 { flex: 1; margin-bottom: 12px; font-size: 1rem; }
.post-card-body p { font-size: 0.875rem; color: var(--color-text-l); }

/* ブログ記事本文 */
.post-content {
  max-width: 720px;
  margin: 0 auto;
  line-height: 2;
}
.post-content h2 { margin: 40px 0 16px; }
.post-content p { margin-bottom: 20px; }
.post-content img { border-radius: var(--radius); margin: 24px 0; }

/* ---------- フォーム ---------- */
.form-wrap {
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-white);
  padding: 48px 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text);
}
.form-group .required {
  color: #c0624a;
  font-size: 0.75rem;
  margin-left: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--color-accent); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.8rem; color: var(--color-text-l); margin-top: 6px; }

/* フォーム送信完了 */
.form-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
}
.form-success.visible { display: block; }
.form-success .check-icon {
  width: 64px;
  height: 64px;
  background: var(--color-accent-l);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 1.5rem;
}
.form-success h3 { margin-bottom: 12px; }
.form-success p { color: var(--color-text-l); font-size: 0.9rem; }

/* ---------- プロフィール ---------- */
.profile-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}
.profile-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.profile-img img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.profile-body h2 { margin-bottom: 8px; }
.profile-sub { color: var(--color-accent-d); font-size: 0.9rem; margin-bottom: 32px; letter-spacing: 0.05em; }
.profile-body p { color: var(--color-text-l); line-height: 2; margin-bottom: 20px; }
.profile-certs {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}
.profile-certs h4 { margin-bottom: 12px; font-size: 0.9rem; letter-spacing: 0.1em; color: var(--color-text-l); }
.cert-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}
.cert-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* ---------- 管理画面 ---------- */
.admin-wrap {
  min-height: 100vh;
  background: var(--color-bg-soft);
  padding-top: 40px;
}
.admin-login-box {
  max-width: 400px;
  margin: 80px auto;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 48px 40px;
  box-shadow: var(--shadow);
  text-align: center;
}
.admin-login-box h1 { font-size: 1.4rem; margin-bottom: 8px; }
.admin-login-box p { color: var(--color-text-l); font-size: 0.875rem; margin-bottom: 32px; }
.admin-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.admin-header h1 {
  font-size: 1.1rem;
  color: var(--color-accent-d);
}
.admin-body {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 24px;
}
.admin-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 32px;
}
.admin-tab {
  padding: 12px 24px;
  font-size: 0.875rem;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  color: var(--color-text-l);
  transition: all var(--transition);
  border: 1px solid transparent;
  border-bottom: none;
  margin-bottom: -2px;
}
.admin-tab.active {
  color: var(--color-accent-d);
  border-color: var(--color-border);
  background: var(--color-white);
  border-bottom-color: var(--color-white);
}
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-section {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.admin-section h3 {
  font-size: 1rem;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.admin-table th {
  text-align: left;
  padding: 10px 12px;
  background: var(--color-bg-soft);
  font-weight: 500;
  color: var(--color-text-l);
  border-bottom: 1px solid var(--color-border);
}
.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.admin-table tr:last-child td { border-bottom: none; }
.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
  border-radius: 4px;
}
.btn-danger {
  background: #f8d7d0;
  color: #c0624a;
  transition: background var(--transition);
}
.btn-danger:hover { background: #f0b8ac; }

/* ---------- フッター ---------- */
.site-footer {
  background: #3D3D3B;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p { font-size: 0.875rem; line-height: 2; margin-top: 16px; }
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-white);
  letter-spacing: 0.05em;
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--color-white); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8rem;
}

/* ---------- ページトップ共通ヘッダー ---------- */
.page-hero {
  margin-top: var(--nav-height);
  background: var(--color-bg-soft);
  padding: 60px 24px;
  text-align: center;
}
.page-hero h1 { margin-bottom: 12px; }
.page-hero p { color: var(--color-text-l); font-size: 0.9rem; }

/* パンくずリスト */
.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-l);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
}
.breadcrumb a:hover { color: var(--color-accent-d); }
.breadcrumb span { opacity: 0.5; }

/* ---------- ローディング ---------- */
.loading {
  text-align: center;
  padding: 48px;
  color: var(--color-text-l);
  font-size: 0.9rem;
}
.loading::after {
  content: '';
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- トースト通知 ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-text);
  color: var(--color-white);
  padding: 14px 24px;
  border-radius: 8px;
  font-size: 0.875rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--color-accent-d); }
.toast.error { background: #c0624a; }

/* ---------- スクロールアニメーション ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: none; }

/* ---------- メディアクエリ ---------- */
@media (max-width: 768px) {
  :root { --nav-height: 56px; }

  .nav-links { display: none; position: fixed; top: var(--nav-height); left: 0; right: 0; background: var(--color-bg); flex-direction: column; gap: 0; padding: 16px 0; border-bottom: 1px solid var(--color-border); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 24px; }
  .nav-cta { margin: 8px 24px; display: block; text-align: center; }
  .nav-toggle { display: flex; }

  .section { padding: 48px 0; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 1.3rem; }

  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 0.95rem; }

  /* クラスページ 2カラム → 1カラム */
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
    direction: ltr !important;
    gap: 32px !important;
  }
  [style*="direction:ltr"],
  [style*="direction: ltr"] { direction: ltr !important; }

  /* クラスページ マージン調整 */
  [style*="margin-bottom:80px"] { margin-bottom: 48px !important; }

  .profile-layout { grid-template-columns: 1fr; gap: 32px; }
  .profile-img { max-width: 280px; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }

  .form-wrap { padding: 28px 20px; }

  .schedule-table { font-size: 0.8rem; }
  .schedule-table th, .schedule-table td { padding: 12px; }

  .admin-tabs { flex-wrap: wrap; }
  .admin-tab { padding: 10px 16px; }

  /* スタンプカード */
  [style*="grid-template-columns:1fr 1fr"][style*="gap:16px"] {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .card-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.15rem; }
  .page-hero h1 { font-size: 1.6rem; }
  .container { padding: 0 16px; }
}