/* =========================================
   旅の羅針盤 — トップページスタイル
   Theme: Refined Editorial / 和洋折衷エレガンス
   ========================================= */

/* --- CSS変数 --- */
:root {
  --ink: #1a1614;
  --ink-light: #3d3530;
  --cream: #faf7f2;
  --cream-dark: #f0ebe1;
  --gold: #b8975a;
  --gold-light: #d4b87a;
  --gold-pale: #f5ecd5;
  --accent: #7a4f3a;
  --mist: #333333;/*カード内の文字色*/
  --white: #ffffff;

  --font-serif-en: 'Cormorant Garamond', Georgia, serif;
  --font-serif-jp: 'Noto Serif JP', 'Yu Mincho', '游明朝', serif;
  --font-sans-jp: 'Noto Sans JP', sans-serif;

  --max-w: 1200px;
  --radius: 2px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--cream);
  color: var(--ink);
  font-family: var(--font-serif-jp);
  font-weight: 300;
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img { display: block; max-width: 100%; }

/* --- ノイズオーバーレイ --- */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* --- コンテナ --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* =========================================
   ヘッダー
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 24px 40px;
  transition: background 0.5s var(--ease-out), padding 0.4s var(--ease-out), backdrop-filter 0.4s;
}

.site-header.scrolled {
  background: rgba(250, 247, 242, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 16px 40px;
  border-bottom: 1px solid rgba(184, 151, 90, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-symbol {
  font-size: 20px;
  color: var(--gold);
  animation: spin-slow 12s linear infinite;
  display: inline-block;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-jp {
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--ink);
}

.logo-en {
  font-family: var(--font-serif-en);
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  font-weight: 300;
}

.header-nav {
  display: flex;
  gap: 36px;
  align-items: center;
}

.header-nav a {
  font-family: var(--font-sans-jp);
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--ink-light);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.35s var(--ease-out);
}

.header-nav a:hover {
  color: var(--gold);
}

.header-nav a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:first-child {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================================
   ヒーロー
   ========================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--ink);
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 40%, rgba(184, 151, 90, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 70%, rgba(122, 79, 58, 0.15) 0%, transparent 60%),
    linear-gradient(160deg, #1a1614 0%, #0f0c0a 50%, #1e1108 100%);
}

.hero-grid-lines {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    linear-gradient(rgba(184, 151, 90, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 151, 90, 0.6) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  animation: hero-in 1.2s var(--ease-out) both;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 20px;
  font-style: italic;
  animation: hero-in 1s 0.2s var(--ease-out) both;
}

.hero-title {
  font-family: var(--font-serif-jp);
  font-weight: 200;
  line-height: 1.0;
  margin-bottom: 28px;
  color: var(--cream);
}

.hero-title-line1 {
  display: block;
  font-size: clamp(3rem, 10vw, 6rem);
  letter-spacing: 0.3em;
  opacity: 0.7;
  animation: hero-in 1s 0.35s var(--ease-out) both;
}

.hero-title-line2 {
  display: block;
  font-size: clamp(4rem, 16vw, 10rem);
  letter-spacing: 0.2em;
  background: linear-gradient(135deg, var(--gold-light), var(--gold), #8a6535);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: hero-in 1s 0.5s var(--ease-out) both;
}

.hero-sub {
  font-family: var(--font-sans-jp);
  font-weight: 300;
  font-size: clamp(0.82rem, 2vw, 1rem);
  color: rgba(250, 247, 242, 0.6);
  letter-spacing: 0.08em;
  line-height: 2;
  margin-bottom: 44px;
  animation: hero-in 1s 0.65s var(--ease-out) both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: hero-in 1s 0.8s var(--ease-out) both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-sans-jp);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  border-radius: var(--radius);
  transition: background 0.3s, transform 0.2s, box-shadow 0.3s;
  box-shadow: 0 4px 24px rgba(184, 151, 90, 0.3);
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(184, 151, 90, 0.4);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 14px 36px;
  border: 1px solid rgba(250, 247, 242, 0.25);
  color: rgba(250, 247, 242, 0.75);
  font-family: var(--font-sans-jp);
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  border-radius: var(--radius);
  transition: border-color 0.3s, color 0.3s, transform 0.2s;
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  animation: hero-in 1s 1.2s var(--ease-out) both;
  z-index: 2;
}

.hero-scroll-hint span {
  font-family: var(--font-serif-en);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: rgba(250, 247, 242, 0.35);
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}

.hero-deco-text {
  position: absolute;
  right: -40px;
  bottom: 80px;
  font-family: var(--font-serif-en);
  font-size: clamp(6rem, 14vw, 11rem);
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1px rgba(184, 151, 90, 0.08);
  letter-spacing: 0.1em;
  pointer-events: none;
  z-index: 1;
  animation: hero-in 1s 1s var(--ease-out) both;
}

/* =========================================
   イントロセクション
   ========================================= */
.intro-section {
  padding: 100px 0;
  background: var(--cream);
  position: relative;
}

.intro-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.intro-wrap {
  display: grid;
  grid-template-columns: 120px 1fr 60px;
  gap: 48px;
  align-items: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.intro-wrap.in-view {
  opacity: 1;
  transform: translateY(0);
}

.intro-label {
  font-family: var(--font-serif-en);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  font-style: italic;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  justify-self: center;
}

.intro-lead {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 16px;
}

.intro-text {
  font-family: var(--font-sans-jp);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--mist);
  letter-spacing: 0.1em;
}

.intro-ornament {
  font-size: 2rem;
  color: var(--gold);
  opacity: 0.4;
  justify-self: center;
}

/* =========================================
   国内旅行セクション
   ========================================= */
.domestic-section {
  padding: 80px 0 120px;
  background: var(--cream-dark);
  position: relative;
}

.domestic-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(184, 151, 90, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.section-header {
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.section-header.in-view {
  opacity: 1;
  transform: translateY(0);
}

.section-label {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  font-style: italic;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--ink);
  margin-bottom: 20px;
}

.section-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

/* --- カードグリッド --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

/* --- カード --- */
.card {
  display: block;
  position: relative;
  background: var(--cream);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out), box-shadow 0.4s;
}

.card.in-view {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(26, 22, 20, 0.12);
  z-index: 2;
}

.card--featured {
  grid-column: span 2;
  background: var(--ink);
}

.card-inner {
  padding: 44px 40px;
  position: relative;
  z-index: 2;
  height: 100%;
}

.card-number {
  font-family: var(--font-serif-en);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 12px;
  opacity: 0.8;
}

.card-tag {
  display: inline-block;
  font-family: var(--font-sans-jp);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--gold);
  border: 1px solid rgba(184, 151, 90, 0.4);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.card--featured .card-tag {
  border-color: rgba(184, 151, 90, 0.5);
}

.card-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-bottom: 16px;
}

.card--featured .card-title {
  font-size: clamp(1.1rem, 2vw, 1.35rem);/*黒い大カードのタイトルの大きさ*/
  color: var(--cream);
}

.card-desc {
  font-family: var(--font-sans-jp);
  font-size: 0.85rem;/*カード内の文字の大きさ*/
  font-weight: 300;
  line-height: 1.85;
  color: var(--mist);
}

.card--featured .card-desc {
  color: rgba(250, 247, 242, 0.55);
}

.card-arrow {
  margin-top: 28px;
  font-size: 1.1rem;
  color: var(--gold);
  transition: transform 0.3s var(--ease-out);
  display: inline-block;
}

.card:hover .card-arrow {
  transform: translateX(6px);
}

.card-deco {
  position: absolute;
  bottom: 20px;
  right: 30px;
  font-family: var(--font-serif-en);
  font-size: 4.5rem;
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1px rgba(184, 151, 90, 0.08);
  letter-spacing: 0.05em;
  pointer-events: none;
  line-height: 1;
}

/* カード上のホバーシマー */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(184, 151, 90, 0.04), transparent);
  transition: left 0.6s var(--ease-out);
  z-index: 1;
}

.card:hover::before {
  left: 150%;
}

/* カードの遅延 */
.card:nth-child(1) { transition-delay: 0s; }
.card:nth-child(2) { transition-delay: 0.08s; }
.card:nth-child(3) { transition-delay: 0.16s; }
.card:nth-child(4) { transition-delay: 0.08s; }
.card:nth-child(5) { transition-delay: 0.16s; }
.card:nth-child(6) { transition-delay: 0.24s; }
.card:nth-child(7) { transition-delay: 0.08s; }
.card:nth-child(8) { transition-delay: 0.16s; }
.card:nth-child(9) { transition-delay: 0.24s; }

/* =========================================
   CTAバナー
   ========================================= */
.cta-banner {
  padding: 100px 0;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 50% 50%, rgba(184, 151, 90, 0.08) 0%, transparent 70%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-label {
  font-family: var(--font-serif-en);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--gold);
  font-style: italic;
  margin-bottom: 24px;
}

.cta-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--cream);
  margin-bottom: 44px;
}

/* =========================================
   フッター
   ========================================= */
.site-footer {
  background: #0f0c0a;
  padding: 60px 0 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(184, 151, 90, 0.15);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  letter-spacing: 0.15em;
  color: var(--cream);
}

.footer-logo .logo-symbol {
  font-size: 18px;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-label {
  font-family: var(--font-serif-en);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  font-style: italic;
  margin-bottom: 4px;
}

.footer-col p, .footer-col a {
  font-family: var(--font-sans-jp);
  font-size: 0.8rem;
  font-weight: 300;
  color: rgba(250, 247, 242, 0.5);
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--gold);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-family: var(--font-serif-en);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: rgba(250, 247, 242, 0.25);
}

/* =========================================
   レスポンシブ
   ========================================= */
@media (max-width: 960px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .card--featured {
    grid-column: span 2;
  }

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

  .intro-label {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .intro-ornament {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 20px 24px;
  }

  .site-header.scrolled {
    padding: 14px 24px;
  }

  .header-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 12, 10, 0.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    z-index: 99;
  }

  .header-nav.open {
    display: flex;
  }

  .header-nav a {
    font-size: 1.1rem;
    color: var(--cream);
  }

  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 101;
  }

  .container {
    padding: 0 20px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .card--featured {
    grid-column: span 1;
  }

  .card-inner {
    padding: 36px 28px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .hero-deco-text {
    display: none;
  }

  .intro-section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-ghost {
    width: 100%;
    max-width: 280px;
    justify-content: center;
    text-align: center;
  }
}