/* CSS Variables - CLAUDE.md 共通ルール準拠 */
:root {
  --color-base: #1a1a1a;      /* ベースカラー（ダークグレー）- 60% */
  --color-main: #d4af37;      /* メインカラー（ゴールド）- 30% */
  --color-accent: #f8f8f8;    /* アクセントカラー（オフホワイト）- 10% */
  --color-text: #2C2C2C;
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  --radius: 12px;
  --section-padding: 80px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-accent);
  font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 600;
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

h2 {
  font-size: 1.6rem;
}

h3 {
  font-size: 1.4rem;
}

h4 {
  font-size: 1.2rem;
}

/* Container & Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: var(--section-padding) 0;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.nav {
  padding: 15px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav-logo h1 {
  color: var(--color-main);
  font-size: 1.5rem;
}

.nav-menu {
  display: none;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.nav-cta {
  color: var(--color-main);
}

.nav-cta {
  background: var(--color-main);
  color: var(--color-base) !important;
  padding: 8px 16px;
  border-radius: var(--radius);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--color-main);
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-base);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.hero-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 26, 26, 0.8) 0%, rgba(26, 26, 26, 0.4) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
  padding: 0 20px;
}

.hero-text {
  max-width: 600px;
  text-align: left;
}

.hero-title {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-main);
  margin-bottom: 20px;
  font-weight: 500;
}

.hero-description {
  color: var(--color-accent);
  margin-bottom: 30px;
  opacity: 0.9;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.btn-primary, .btn-secondary {
  padding: 14px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  text-align: center;
}

.btn-primary {
  background: var(--color-main);
  color: var(--color-base);
}

.btn-primary:hover {
  background: #c19b2a;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-base);
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-accent);
  opacity: 0.7;
  font-size: 0.9rem;
  z-index: 3;
}

.scroll-indicator {
  width: 2px;
  height: 30px;
  background: var(--color-main);
  margin: 10px auto 0;
  animation: scrollBounce 2s infinite;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
  color: var(--color-base);
}

.section-title.dark {
  color: var(--color-base);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-main);
  font-weight: 500;
}

.section-subtitle.dark {
  color: rgba(26, 26, 26, 0.8);
}

/* Concept Section */
.concept {
  background: var(--color-accent);
}

.concept-grid {
  display: grid;
  gap: 60px;
  align-items: center;
}

.concept-text h3 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  color: var(--color-base);
}

.concept-text p {
  margin-bottom: 40px;
  line-height: 1.8;
  color: var(--color-text);
}

.concept-features {
  display: grid;
  gap: 30px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px;
  background: rgba(212, 175, 55, 0.05);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-main);
}

.feature-icon {
  color: var(--color-main);
  flex-shrink: 0;
}

.feature-content h4 {
  margin-bottom: 8px;
  color: var(--color-base);
}

.feature-content p {
  color: var(--color-text);
  font-size: 0.9rem;
  margin: 0;
}

.concept-images {
  display: grid;
  gap: 20px;
}

.image-gallery {
  display: grid;
  gap: 20px;
}

.image-gallery img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius);
}

/* Wave Divider */
.wave-divider {
  height: 120px;
  overflow: hidden;
  line-height: 0;
}

.wave-divider svg {
  width: calc(100% + 1.3px);
  height: 120px;
}

.wave-divider.bottom {
  transform: rotate(180deg);
}

/* Rooms Section */
.rooms.gold-bg {
  background: var(--color-main);
  color: var(--color-base);
}

.rooms-showcase {
  display: grid;
  gap: 50px;
}

.room-feature.main-feature {
  display: grid;
  gap: 40px;
  align-items: center;
}

.room-feature .room-image img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  border-radius: var(--radius);
}

.room-feature .room-content h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--color-base);
}

.room-feature .room-content p {
  margin-bottom: 30px;
  line-height: 1.7;
  color: rgba(26, 26, 26, 0.8);
}

.room-amenities {
  list-style: none;
}

.room-amenities li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: rgba(26, 26, 26, 0.9);
}

.room-amenities li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-base);
  font-weight: bold;
}

.room-grid {
  display: grid;
  gap: 30px;
}

.room-item {
  background: rgba(248, 248, 248, 0.1);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.room-item:hover {
  transform: translateY(-5px);
}

.room-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.room-info {
  padding: 20px;
}

.room-info h4 {
  margin-bottom: 10px;
  color: var(--color-base);
}

.room-info p {
  font-size: 0.9rem;
  color: rgba(26, 26, 26, 0.7);
  margin: 0;
}

/* Location Section */
.location {
  background: var(--color-accent);
}

.location-content {
  display: grid;
  gap: 50px;
  align-items: start;
}

.location-text h3 {
  font-size: 1.4rem;
  margin-bottom: 20px;
  color: var(--color-main);
}

.location-text p {
  margin-bottom: 30px;
  line-height: 1.7;
}

.location-highlights {
  display: grid;
  gap: 15px;
}

.highlight-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: rgba(212, 175, 55, 0.1);
  border-radius: var(--radius);
}

.highlight-item strong {
  color: var(--color-base);
}

.highlight-item span {
  color: var(--color-main);
  font-weight: 600;
}

.location-visual {
  display: grid;
  gap: 20px;
}

.map-container {
  border-radius: var(--radius);
  overflow: hidden;
}

.map-container iframe {
  border-radius: var(--radius);
}

.location-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius);
}

/* Plans Section */
.plans.dark-bg {
  background: var(--color-base);
}

.plans .section-title,
.plans .section-subtitle {
  color: var(--color-accent);
}

.plans-grid {
  display: grid;
  gap: 30px;
  margin-bottom: 40px;
}

.plan-card {
  background: rgba(248, 248, 248, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.plan-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-main);
}

.plan-card.featured {
  border: 2px solid var(--color-main);
  transform: scale(1.05);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-main);
  color: var(--color-base);
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.plan-header h3 {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.plan-price {
  margin-bottom: 10px;
}

.plan-price .currency {
  font-size: 1.2rem;
  color: var(--color-main);
  vertical-align: top;
}

.plan-price .amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-main);
}

.plan-price .period {
  font-size: 1rem;
  color: var(--color-accent);
}

.plan-guests {
  color: rgba(248, 248, 248, 0.7);
  margin-bottom: 30px;
}

.plan-features ul {
  list-style: none;
  margin-bottom: 30px;
  text-align: left;
}

.plan-features li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
  color: var(--color-accent);
}

.plan-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-main);
  font-weight: bold;
}

.plan-cta {
  background: var(--color-main);
  color: var(--color-base);
  padding: 12px 24px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s ease;
  display: inline-block;
  width: 100%;
  text-align: center;
}

.plan-cta:hover {
  background: #c19b2a;
}

.plans-note {
  text-align: center;
  color: rgba(248, 248, 248, 0.7);
  font-size: 0.9rem;
}

/* Reviews Section */
.reviews {
  background: var(--color-accent);
}

.reviews-slider {
  position: relative;
  max-width: 800px;
  margin: 0 auto 40px;
}

.review-item {
  display: none;
  background: rgba(212, 175, 55, 0.05);
  padding: 40px 30px;
  border-radius: var(--radius);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.review-item.active {
  display: block;
}

.review-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 30px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 20px;
}

.author-info h4 {
  margin-bottom: 8px;
  color: var(--color-base);
}

.author-details {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.9rem;
}

.author-details span {
  color: var(--color-main);
  font-weight: 500;
}

.rating {
  color: var(--color-main);
}

.review-navigation {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.review-prev, .review-next {
  background: var(--color-main);
  border: none;
  color: var(--color-base);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}

.review-prev:hover, .review-next:hover {
  background: #c19b2a;
}

.review-dots {
  display: flex;
  gap: 10px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.3);
  cursor: pointer;
  transition: background 0.3s ease;
}

.dot.active {
  background: var(--color-main);
}

/* Contact Section */
.contact.gold-bg {
  background: var(--color-main);
}

.contact-content {
  display: grid;
  gap: 60px;
}

.contact-methods {
  display: grid;
  gap: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: rgba(248, 248, 248, 0.1);
  padding: 30px;
  border-radius: var(--radius);
}

.contact-icon {
  color: var(--color-base);
  flex-shrink: 0;
}

.contact-info h3 {
  margin-bottom: 8px;
  color: var(--color-base);
}

.contact-info p {
  margin-bottom: 12px;
  color: rgba(26, 26, 26, 0.8);
}

.contact-link {
  color: var(--color-base);
  font-weight: 600;
  text-decoration: none;
  font-size: 1.1rem;
}

.contact-link:hover {
  text-decoration: underline;
}

/* Contact Form */
.contact-form {
  background: rgba(248, 248, 248, 0.1);
  padding: 40px;
  border-radius: var(--radius);
}

.form-group-row {
  display: grid;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--color-base);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid rgba(26, 26, 26, 0.2);
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-body);
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-base);
}

.form-submit {
  text-align: center;
  margin-top: 30px;
}

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

/* Access Section */
.access {
  background: var(--color-accent);
  padding: 60px 0;
}

.access-content {
  display: grid;
  gap: 40px;
}

.access-info h2 {
  font-size: 1.8rem;
  margin-bottom: 30px;
  color: var(--color-base);
}

.access-details {
  display: grid;
  gap: 30px;
}

.access-item h3 {
  margin-bottom: 12px;
  color: var(--color-main);
}

.access-item p {
  line-height: 1.6;
}

.access-item ul {
  list-style: none;
  padding-left: 0;
}

.access-item li {
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.access-item li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-main);
}

.access-note {
  color: var(--color-main);
  font-size: 0.9rem;
  font-weight: 500;
}

.language-options h3 {
  margin-bottom: 15px;
  color: var(--color-base);
}

.language-buttons {
  display: flex;
  gap: 10px;
}

.lang-btn {
  background: transparent;
  border: 2px solid var(--color-main);
  color: var(--color-main);
  padding: 8px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.lang-btn.active,
.lang-btn:hover {
  background: var(--color-main);
  color: var(--color-base);
}

/* Footer */
.footer {
  background: var(--color-base);
  color: var(--color-accent);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-logo h3 {
  color: var(--color-main);
  margin-bottom: 12px;
}

.footer-logo p {
  color: rgba(248, 248, 248, 0.8);
}

.footer-contact h4 {
  color: var(--color-main);
  margin-bottom: 16px;
}

.footer-contact p {
  margin-bottom: 8px;
  color: rgba(248, 248, 248, 0.9);
}

.footer-nav ul,
.footer-legal ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-nav a,
.footer-legal a {
  color: rgba(248, 248, 248, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-nav a:hover,
.footer-legal a:hover {
  color: var(--color-main);
}

.footer-bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  padding-top: 20px;
  text-align: center;
  color: rgba(248, 248, 248, 0.6);
  font-size: 0.9rem;
}

/* Keyframes */
@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Tablet Styles - 768px */
@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }

  .nav-menu {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .hero-subtitle {
    font-size: 1.3rem;
  }

  .hero-buttons {
    flex-direction: row;
    gap: 20px;
  }

  .section-title {
    font-size: 2.8rem;
  }

  .concept-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }

  .concept-features {
    grid-template-columns: 1fr;
  }

  .room-feature.main-feature {
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
  }

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

  .location-content {
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }

  .location-highlights {
    grid-template-columns: 1fr 1fr;
  }

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

  .contact-methods {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .contact-content {
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
  }

  .form-group-row {
    grid-template-columns: 1fr 1fr;
  }

  .access-content {
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: start;
  }

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

  .footer-content {
    grid-template-columns: 1fr auto;
    gap: 80px;
  }

  .footer-links {
    display: grid;
    gap: 40px;
  }
}

/* Desktop Styles - 1280px */
@media (min-width: 1280px) {
  .hero-title {
    font-size: 3.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 3rem;
  }

  .concept-grid {
    grid-template-columns: 1.3fr 1fr;
  }

  .concept-features {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

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

  .location-highlights {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

  .footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }
}