/* ============================================
   浜ちゃんの島遊び - メインスタイルシート

   【カラーの変更方法】
   :root の変数を変更するだけで全体の色が変わります

   【フォントの変更方法】
   :root の --font-main / --font-accent を変更
   ============================================ */

/* ---------- 変数 ---------- */
:root {
  /* メインカラー */
  --color-primary: #0077B6;        /* 海の青 */
  --color-primary-dark: #005f8f;
  --color-primary-light: #e8f4f8;

  /* アクセントカラー */
  --color-accent: #E76F51;         /* サンセットオレンジ */
  --color-accent-dark: #c45a3e;

  /* サブカラー */
  --color-green: #2D6A4F;          /* ジャングルグリーン */
  --color-sand: #F4A261;           /* 砂浜ゴールド */
  --color-sky: #48CAE4;            /* 空色 */

  /* テキスト */
  --color-text: #1a1a2e;
  --color-text-light: #555;
  --color-text-muted: #888;

  /* 背景 */
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-bg-dark: #1a1a2e;

  /* フォント */
  --font-main: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --font-accent: 'Zen Maru Gothic', 'Noto Sans JP', sans-serif;

  /* サイズ */
  --container-max: 1200px;
  --header-height: 70px;
  --radius: 12px;
  --radius-sm: 8px;

  /* シャドウ */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);

  /* トランジション */
  --transition: 0.3s ease;
}

/* ---------- リセット & ベース ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-main);
  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 {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- ヘッダー ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-primary);
}

.logo-icon {
  font-size: 1.5rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-accent);
  color: white !important;
  margin-left: 8px;
}

.nav-cta:hover {
  background: var(--color-accent-dark) !important;
  color: white !important;
}

/* ハンバーガー */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  left: 0;
  transition: var(--transition);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }

.hamburger.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  /* 背景画像: images/hero-main.jpg に差し替え */
  background:
    linear-gradient(135deg, #0077B6 0%, #48CAE4 40%, #00B4D8 60%, #0096C7 100%);
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0,0,0,0.3) 0%,
    rgba(0,0,0,0.1) 40%,
    rgba(0,0,0,0.4) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  padding: 0 24px;
  max-width: 800px;
}

.hero-sub {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  opacity: 0.9;
}

.hero-title {
  font-family: var(--font-accent);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-accent {
  color: var(--color-sand);
}

.hero-desc {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 32px;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.3);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: white;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-align: center;
  opacity: 0.7;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: white;
  margin: 8px auto 0;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
  text-align: center;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(231,111,81,0.4);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: white;
}

.btn-outline:hover {
  background: white;
  color: var(--color-primary);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* ---------- セクション共通 ---------- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-accent);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 900;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.section-header-light .section-label {
  color: var(--color-sand);
}

.section-header-light .section-title {
  color: white;
}

.section-header-light .section-desc {
  color: rgba(255,255,255,0.8);
}

/* ---------- 3つの特徴 ---------- */
.features {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 40px 24px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.feature-title {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.feature-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ---------- ツアー一覧 ---------- */
.tours {
  padding: 100px 0;
}

.tour-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 48px;
  transition: var(--transition);
}

.tour-card:hover {
  box-shadow: var(--shadow-lg);
}

.tour-card:nth-child(even) {
  direction: rtl;
}

.tour-card:nth-child(even) > * {
  direction: ltr;
}

.tour-image {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ツアー画像プレースホルダー背景 */
.tour-image-ocean {
  background: linear-gradient(135deg, #48CAE4, #0077B6);
}

.tour-image-fishing {
  background: linear-gradient(135deg, #0096C7, #023E8A);
}

.tour-image-jungle {
  background: linear-gradient(135deg, #40916C, #2D6A4F);
}

.tour-image-hunting {
  background: linear-gradient(135deg, #8B6914, #5C4033);
}

.tour-image-sunset {
  background: linear-gradient(135deg, #E76F51, #F4A261);
}

.tour-image-label {
  color: white;
  font-size: 1rem;
  font-weight: 500;
  background: rgba(0,0,0,0.3);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
}

/* ツアーバッジ */
.tour-badge-popular,
.tour-badge-unique,
.tour-badge-season,
.tour-badge-easy {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  color: white;
}

.tour-badge-popular { background: var(--color-accent); }
.tour-badge-unique { background: var(--color-green); }
.tour-badge-season { background: #8B6914; }
.tour-badge-easy { background: var(--color-sky); }

/* ツアー情報 */
.tour-info {
  padding: 40px;
}

.tour-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.tour-tag {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-ocean { background: #e0f2fe; color: #0369a1; }
.tag-culture { background: #fef3c7; color: #92400e; }
.tag-photo { background: #f0fdf4; color: #166534; }
.tag-fishing { background: #dbeafe; color: #1e40af; }
.tag-family { background: #fce7f3; color: #9d174d; }
.tag-adventure { background: #fef9c3; color: #854d0e; }
.tag-nature { background: #dcfce7; color: #15803d; }
.tag-premium { background: #fef3c7; color: #92400e; }
.tag-season { background: #f3e8ff; color: #7c3aed; }
.tag-relax { background: #e0f2fe; color: #0284c7; }

.tour-name {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.tour-subtitle {
  color: var(--color-text-light);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.tour-description {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.8;
}

.tour-details {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.tour-detail {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  padding: 6px 14px;
  border-radius: 50px;
}

.detail-icon {
  font-size: 0.9rem;
}

.tour-includes {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.includes-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.tour-includes ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tour-includes li {
  font-size: 0.85rem;
  background: white;
  padding: 4px 12px;
  border-radius: 50px;
  color: var(--color-text-light);
}

.tour-includes li::before {
  content: "\2713 ";
  color: var(--color-primary);
  font-weight: 700;
}

/* 料金 */
.tour-price-block {
  margin-bottom: 20px;
  padding: 16px 0;
  border-top: 1px solid #eee;
}

.tour-price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 4px;
}

.price-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.price-value {
  font-family: var(--font-accent);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-accent);
}

.price-unit {
  font-size: 0.9rem;
  font-weight: 500;
}

.price-child .price-value {
  font-size: 1.3rem;
  color: var(--color-text);
}

.price-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ---------- About ---------- */
.about {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 60px;
  align-items: start;
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(135deg, #48CAE4, #0077B6);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  text-align: center;
  line-height: 1.6;
}

.about-name {
  font-family: var(--font-accent);
  font-size: 2rem;
  margin-bottom: 8px;
}

.about-role {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.about-intro {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.about-text {
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-skills {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 32px 0;
}

.skill-item {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.skill-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.skill-item strong {
  font-size: 0.9rem;
  display: block;
  margin-bottom: 2px;
}

.skill-item p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.about-youtube {
  margin-top: 24px;
}

.youtube-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FF0000;
  color: white;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
}

.youtube-link:hover {
  background: #cc0000;
  transform: translateY(-2px);
}

.yt-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: white;
  color: #FF0000;
  border-radius: 50%;
  font-size: 0.7rem;
}

.youtube-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ---------- ギャラリー ---------- */
.gallery {
  padding: 100px 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.gallery-item-wide {
  grid-column: span 2;
}

.gallery-placeholder {
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: white;
  font-weight: 500;
  background: linear-gradient(135deg,
    hsl(calc(var(--i, 0) * 40 + 180), 60%, 50%),
    hsl(calc(var(--i, 0) * 40 + 200), 70%, 40%)
  );
}

.gallery-item:nth-child(1) .gallery-placeholder { background: linear-gradient(135deg, #48CAE4, #0077B6); }
.gallery-item:nth-child(2) .gallery-placeholder { background: linear-gradient(135deg, #2D6A4F, #40916C); }
.gallery-item:nth-child(3) .gallery-placeholder { background: linear-gradient(135deg, #E76F51, #F4A261); }
.gallery-item:nth-child(4) .gallery-placeholder { background: linear-gradient(135deg, #0096C7, #023E8A); }
.gallery-item:nth-child(5) .gallery-placeholder { background: linear-gradient(135deg, #F4A261, #E76F51); }
.gallery-item:nth-child(6) .gallery-placeholder { background: linear-gradient(135deg, #40916C, #2D6A4F); }
.gallery-item:nth-child(7) .gallery-placeholder { background: linear-gradient(135deg, #0077B6, #48CAE4); }
.gallery-item:nth-child(8) .gallery-placeholder { background: linear-gradient(135deg, #023E8A, #0096C7); }

.gallery-item-wide .gallery-placeholder {
  aspect-ratio: 8/3;
}

/* ---------- ツアーの流れ ---------- */
.flow {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.flow-steps {
  display: flex;
  gap: 24px;
  position: relative;
}

.flow-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary-light);
  z-index: 0;
}

.flow-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.flow-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(0,119,182,0.3);
}

.flow-step h3 {
  font-family: var(--font-accent);
  font-size: 1rem;
  margin-bottom: 8px;
}

.flow-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- FAQ ---------- */
.faq {
  padding: 100px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #eee;
}

.faq-question {
  padding: 20px 0;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

details[open] .faq-question::after {
  content: '\2212';
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding: 0 0 20px;
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ---------- お問い合わせ ---------- */
.contact {
  padding: 100px 0;
  background: var(--color-bg-dark);
  color: white;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: block;
  padding: 24px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  transition: var(--transition);
  text-align: center;
}

.contact-card:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.contact-card h3 {
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.7;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1.2rem;
  font-weight: 700;
}

.contact-note {
  font-size: 0.8rem;
  opacity: 0.6;
  margin-top: 4px;
}

/* フォーム */
.contact-form-wrap {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 40px;
}

.form-title {
  font-family: var(--font-accent);
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  opacity: 0.9;
}

.required {
  color: var(--color-accent);
}

input, select, textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  color: white;
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: var(--transition);
}

input::placeholder, textarea::placeholder {
  color: rgba(255,255,255,0.4);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255,255,255,0.15);
}

select option {
  background: var(--color-bg-dark);
  color: white;
}

/* ---------- アクセス ---------- */
.access {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.access-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.access-info h3 {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.access-info p {
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.access-transport {
  margin-top: 24px;
}

.transport-item {
  margin-bottom: 16px;
}

.transport-item strong {
  display: block;
  margin-bottom: 4px;
}

.transport-item p {
  font-size: 0.9rem;
}

.map-placeholder {
  width: 100%;
  height: 400px;
  background: #ddd;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #888;
  font-size: 1rem;
}

.map-note {
  font-size: 0.8rem;
  color: #aaa;
  margin-top: 8px;
}

/* ---------- フッター ---------- */
.footer {
  background: var(--color-bg-dark);
  color: white;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  font-family: var(--font-accent);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.85rem;
  opacity: 0.7;
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.1);
  border-radius: 50px;
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: rgba(255,255,255,0.2);
}

.social-icon {
  font-size: 1rem;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.9rem;
  opacity: 0.7;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-sky);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ============================================
   レスポンシブ
   ============================================ */

@media (max-width: 1024px) {
  .tour-card {
    grid-template-columns: 1fr;
  }

  .tour-card:nth-child(even) {
    direction: ltr;
  }

  .tour-image {
    min-height: 250px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image-placeholder {
    max-width: 400px;
    margin: 0 auto;
  }

  .access-content {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 8px;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: var(--transition);
    z-index: 999;
    align-items: stretch;
  }

  .nav.active {
    right: 0;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 1rem;
    border-bottom: 1px solid #eee;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 28px 20px;
  }

  .tour-info {
    padding: 24px;
  }

  .tour-name {
    font-size: 1.2rem;
  }

  .about-skills {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .gallery-item-wide {
    grid-column: span 2;
  }

  .flow-steps {
    flex-direction: column;
    gap: 32px;
  }

  .flow-steps::before {
    top: 0;
    bottom: 0;
    left: 30px;
    right: auto;
    width: 2px;
    height: auto;
  }

  .flow-step {
    text-align: left;
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 16px;
    align-items: start;
  }

  .flow-step h3, .flow-step p {
    text-align: left;
  }

  .flow-number {
    width: 50px;
    height: 50px;
    font-size: 1rem;
    margin-bottom: 0;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-methods {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .contact-card {
    flex: 1;
    min-width: 140px;
  }

  .contact-form-wrap {
    padding: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .hero-badges {
    gap: 8px;
  }

  .badge {
    font-size: 0.75rem;
    padding: 6px 14px;
  }
}

@media (max-width: 480px) {
  .contact-methods {
    flex-direction: column;
  }

  .contact-card {
    min-width: auto;
  }

  .price-value {
    font-size: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
    width: 100%;
    max-width: 280px;
  }

  .tour-details {
    flex-direction: column;
    gap: 8px;
  }

  .tour-detail {
    width: fit-content;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- アニメーション（スクロール表示） ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}