:root {
  /* Color System */
  --color-primary: #d4af37;        /* Champagne Gold */
  --color-primary-dark: #b89324;   /* Darker Gold for hover/active */
  --color-primary-light: #f7f3e3;  /* Very Light Gold */
  --color-text: #2c3e50;           /* Dark Slate Blue */
  --color-text-light: #5f758a;     /* Muted Slate */
  --color-bg-base: #faf8f5;        /* Premium Off-White */
  --color-bg-card: #ffffff;        /* Pure White */
  --color-border: #e9e5de;         /* Warm Gray border */
  
  /* Fonts */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Outfit', 'Noto Sans JP', sans-serif;
  
  /* Layout */
  --container-width: 1140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-base);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s ease;
}

/* Common UI Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  letter-spacing: 0.05em;
}

.btn-header {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-header:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

.btn-hero {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 14px 36px;
  font-size: 1rem;
}

.btn-hero:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

.btn-hero-secondary {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 14px 36px;
  font-size: 1rem;
  margin-left: 15px;
}

.btn-hero-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-phone {
  background-color: var(--color-primary);
  color: #ffffff;
  width: 100%;
  padding: 14px;
  font-size: 1.05rem;
}

.btn-phone:hover {
  background-color: var(--color-primary-dark);
}

/* Layout Container */
.section-container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
}

.section-tag {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.section-title-serif {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}

.section-header-center {
  text-align: center;
  margin-bottom: 50px;
}

.section-header-center .section-title-serif {
  margin-bottom: 12px;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* Header */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-color: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

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

.logo-link {
  display: flex;
  align-items: center;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background-image: url('images/logo_circle.svg');
  background-size: contain;
  background-repeat: no-repeat;
  margin-right: 12px;
}

.logo-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.logo-subtitle {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.2em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-item {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.nav-item:hover {
  color: var(--color-primary);
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 85vh;
  min-height: 550px;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(135deg, #1b263b 0%, #0d1b2a 100%);
  color: #ffffff;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(212, 175, 55, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 10;
}

.hero-tagline {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  line-height: 1.35;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-desc {
  font-size: 1.1rem;
  max-width: 600px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  line-height: 1.8;
}

/* Welcome Section */
.welcome-section {
  background-color: #ffffff;
}

.welcome-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.concept-lead {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.concept-body {
  color: var(--color-text-light);
  line-height: 1.8;
}

.welcome-image-area {
  display: flex;
  justify-content: center;
}

.concept-image-frame {
  width: 100%;
  max-width: 380px;
  height: 420px;
  background-color: var(--color-primary-light);
  border-radius: 12px;
  position: relative;
  background-image: url('images/exterior.jpg');
  background-size: cover;
  background-position: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.concept-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 1px solid var(--color-primary);
  border-radius: 12px;
  transform: translate(15px, 15px);
  pointer-events: none;
  z-index: 1;
}

/* Category Tabs */
.category-tabs-container {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.category-tabs {
  display: flex;
  gap: 8px;
  padding-bottom: 1px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-light);
  cursor: pointer;
  position: relative;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 3px 3px 0 0;
}

/* Menu Section */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
  transition: all 0.3s ease;
}

.menu-card {
  background-color: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.menu-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(212, 175, 55, 0.08);
}

/* Featured Menu styling */
.menu-card.featured {
  border-color: var(--color-primary);
  background-color: #fdfcf9;
}

.menu-card.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--color-primary), #f5d76e);
}

.menu-card-header {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.menu-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.menu-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 30px;
}

.menu-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  background-color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 4px;
}

.menu-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
}

.menu-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  flex-grow: 1;
}

.menu-price-container {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: auto;
}

.price-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-weight: 600;
  text-transform: uppercase;
}

.price-value {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

/* Accordion Detail */
.menu-accordion-btn {
  background: none;
  border: none;
  width: 100%;
  padding: 14px 24px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  border-top: 1px solid var(--color-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background-color 0.3s ease;
}

.menu-accordion-btn:hover {
  background-color: var(--color-primary-light);
}

.menu-detail-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background-color: var(--color-bg-base);
  border-top: 0 solid var(--color-border);
}

.menu-card.active .menu-detail-body {
  border-top-width: 1px;
}

.menu-detail-content {
  padding: 20px 24px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.detail-title {
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

/* Loading Skeleton */
.loading-skeleton {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
  width: 100%;
}

.skeleton-card {
  height: 250px;
  background: linear-gradient(90deg, #f2f0eb 25%, #e9e5de 50%, #f2f0eb 75%);
  background-size: 200% 100%;
  animation: loading-animation 1.5s infinite;
  border-radius: 12px;
}

@keyframes loading-animation {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Flow Section */
.flow-section {
  background-color: #ffffff;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.flow-item {
  position: relative;
  padding: 24px;
  background-color: var(--color-bg-base);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.flow-number {
  font-family: var(--font-sans);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: 12px;
  line-height: 1;
}

.flow-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* Contact & Map Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}

.contact-info-card {
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 40px;
  display: flex;
  flex-direction: column;
}

.contact-lead {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 30px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.contact-item {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
}

.tel-link {
  color: var(--color-primary-dark);
  font-size: 1.8rem;
  line-height: 1.2;
}

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

.contact-note {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.map-card {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.map-container {
  width: 100%;
  height: 100%;
  min-height: 400px;
}

/* Footer */
.main-footer {
  background-color: #1b263b;
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-logo-icon {
  width: 28px;
  height: 28px;
  background-image: url('images/logo_circle.svg');
  background-size: contain;
  background-repeat: no-repeat;
  margin-right: 10px;
  filter: brightness(0) invert(1);
}

.footer-logo-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.copyright {
  font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 991px) {
  .welcome-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .welcome-image-area {
    order: -1;
  }
  
  .concept-image-frame {
    height: 300px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .map-container {
    height: 350px;
  }
}

@media (max-width: 768px) {
  .main-header {
    height: 70px;
  }
  
  .header-container {
    padding: 0 16px;
  }
  
  .header-nav {
    display: none; /* Mobile menu can be simplified */
  }
  
  .hero-section {
    padding-top: 70px;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-desc {
    font-size: 0.95rem;
  }
  
  .btn-hero-secondary {
    display: none;
  }
  
  .section-title-serif {
    font-size: 1.8rem;
  }
  
  .menu-grid {
    grid-template-columns: 1fr;
  }
}