/* ==========================================================================
   Design System & Variable Declarations (TEUCHIDOKORO OKINA)
   ========================================================================== */
:root {
  /* Color Palette - Traditional Kappo & Tatami (Dark Wood & Matcha Green) */
  --primary-bg: #1e140f;        /* Deep Dark Wood (Ebony/Charred wood) */
  --body-bg: #faf8f5;           /* Off-white Washi Paper */
  --card-bg: #ffffff;           /* Clean Shiraki (White Wood) */
  --primary-light: #8e8071;     /* Soft Ash Brown */
  
  --accent: #2d5a27;            /* Matcha Green (Soba leaf/Green tea) */
  --accent-dark: #1b3d16;       /* Deep Forest Moss Green */
  --accent-light: rgba(45, 90, 39, 0.08); /* Matcha Green Tint */
  
  --gold: #c59b27;              /* Burnished Gold (Kanazawa Gold Leaf) */
  
  --text-dark: #2a2421;         /* Dark Charcoal Ink */
  --text-light: #f5f2eb;        /* Soft Cream Washi */
  
  --border-color: #ebdcc5;      /* Aged Paper Beige */
  --border-muted: #e6dfd5;      /* Thin Grayish Beige */
  --error: #9c3030;             /* Bookmark Red for Errors */
  --error-bg: #fdf5f5;          /* Soft red background */
  
  /* Typography */
  --font-base: 'Noto Serif JP', serif; /* Classic Japanese Serifs */
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-display: 'Playfair Display', serif; /* Vintage Elegant English */
  --font-mono: 'Share Tech Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1.2rem;
  --spacing-md: 2.5rem;
  --spacing-lg: 5rem;
  --spacing-xl: 8.5rem;
  
  /* UI Tokens */
  --border-radius-sm: 2px;      /* Very sharp Traditional wood craft cut */
  --border-radius-md: 4px;
  --shadow-sm: 0 4px 24px rgba(42, 36, 33, 0.03);
  --shadow-md: 0 16px 48px rgba(42, 36, 33, 0.06);
  --shadow-lg: 0 32px 96px rgba(42, 36, 33, 0.1);
  
  /* Motion */
  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-normal: 0.55s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.95s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
}

body {
  font-family: var(--font-base);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-dark);
  background-color: var(--body-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, .logo-text, .menu-tab-btn, .principle-header h3 {
  font-weight: 700;
}

a {
  color: var(--text-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent);
}

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent);
  color: var(--white);
  padding: 0.8rem 1.6rem;
  z-index: 9999;
  border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
  font-weight: 700;
  font-family: var(--font-base);
  letter-spacing: 0.15em;
  transition: top var(--transition-fast);
  border: 1px solid var(--gold);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--primary-bg);
}

*:focus-visible {
  outline: 2px dashed var(--accent);
  outline-offset: 4px;
}

/* ==========================================================================
   Reusable Styles
   ========================================================================== */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.section-header {
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.section-header.text-center {
  text-align: center;
}

.section-header.text-center::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background-color: var(--accent);
  margin: 1.2rem auto 0 auto;
}

.section-subtitle {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--gold);
  display: block;
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--primary-bg);
}

.section-header p {
  color: var(--primary-light);
  max-width: 650px;
  margin-top: 0.8rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  font-weight: 400;
}

.section-header.text-center p {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 0.95rem 2.8rem;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-base);
  border-radius: var(--border-radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

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

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-dark);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--border-color);
  color: var(--primary-bg);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-light);
  border-color: var(--gold);
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(30, 20, 15, 0.96); /* Dark wood translucency */
  border-bottom: 2px solid var(--accent);
  backdrop-filter: blur(8px);
  transition: background-color var(--transition-fast);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.logo-icon {
  width: 44px;
  height: 44px;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.1em;
  line-height: 1.1;
}

.logo-text .accent-text {
  color: var(--gold);
}

.logo-subtext {
  font-family: var(--font-display);
  font-size: 0.58rem;
  font-weight: 500;
  color: var(--primary-light);
  margin-top: 0.15rem;
  line-height: 1;
  letter-spacing: 0.15em;
}

.main-nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 2.2rem;
}

.main-nav a {
  font-weight: 700;
  font-family: var(--font-base);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--text-light);
  padding: 0.4rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--gold);
  transition: width var(--transition-fast);
}

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

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

.main-nav .nav-cta {
  background-color: var(--accent);
  color: var(--text-light);
  padding: 0.6rem 1.4rem;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  border: 1.5px solid var(--accent);
  transition: all var(--transition-fast);
}

.main-nav .nav-cta:hover {
  background-color: transparent;
  color: var(--gold);
  border-color: var(--gold);
}

.main-nav .nav-cta::after {
  display: none;
}

/* Mobile Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle .bar {
  width: 100%;
  height: 1.5px;
  background-color: var(--text-light);
  transition: all var(--transition-fast);
}

/* ==========================================================================
   Mobile Menu Overlay
   ========================================================================== */
.mobile-menu {
  position: fixed;
  top: 81px;
  left: 0;
  width: 100%;
  height: calc(100vh - 81px);
  background-color: var(--primary-bg);
  z-index: 999;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  transform: translateY(0);
  opacity: 1;
  transition: all var(--transition-normal);
  border-top: 1.5px solid var(--accent);
}

.mobile-menu[hidden] {
  transform: translateY(-20px);
  opacity: 0;
  pointer-events: none;
  display: none !important;
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu a {
  font-size: 1.45rem;
  font-family: var(--font-base);
  font-weight: 700;
  color: var(--text-light);
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mobile-menu .nav-cta {
  background-color: var(--accent);
  color: var(--text-light);
  text-align: center;
  border-bottom: none;
  padding: 0.8rem 0;
}

/* ==========================================================================
   Hero Section (Shitaji Grid & Kyoto Shoji Window)
   ========================================================================== */
.hero-section {
  background-color: var(--primary-bg);
  padding: 7rem 0 var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
  color: var(--text-light);
}

/* Shoji design grids */
.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(rgba(255, 255, 255, 0.01) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
  background-size: 30px 60px;
  pointer-events: none;
  z-index: 1;
}

.hero-bg-pattern::before {
  content: '';
  position: absolute;
  top: 20%;
  right: -5%;
  width: 55%;
  height: 2px;
  background-color: var(--gold);
  transform: rotate(-12deg);
  opacity: 0.2;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text-side {
  position: relative;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 0.2rem 0.9rem;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.18em;
}

.hero-text-side h1 {
  font-size: 3.5rem;
  line-height: 1.3;
  font-weight: 900;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.08em;
}

.hero-text-side .highlight-washi {
  display: inline-block;
  position: relative;
}

.hero-text-side .highlight-washi::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: -2%;
  width: 104%;
  height: 12px;
  background-color: var(--accent);
  z-index: -1;
  opacity: 0.85;
}

.hero-text-side p {
  font-size: 1rem;
  color: var(--border-color);
  margin-bottom: 2.8rem;
  max-width: 550px;
  line-height: 1.95;
  font-family: var(--font-sans);
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
}

/* Kyoto Shoji Window with Stone Mill Visual */
.hero-visual-side {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-window-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1/1;
  background-color: #261912;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  border: 2px solid rgba(255,255,255,0.03);
}

.washi-texture-overlay {
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  background-color: #faf8f5;
  opacity: 0.95;
  pointer-events: none;
  z-index: 1;
}

.hero-window-svg {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
  z-index: 2;
}

/* Rotation animation for stone mill */
.rotating-stone {
  transform-box: fill-box;
  animation: spin-slow 45s linear infinite;
}

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

.window-overlay-tag {
  position: absolute;
  bottom: -4%;
  right: -4%;
  background-color: var(--primary-bg);
  border: 1.5px solid var(--gold);
  padding: 0.8rem 1.4rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  z-index: 3;
}

.window-overlay-tag .tag-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
}

.window-overlay-tag .tag-sub {
  font-size: 0.65rem;
  color: var(--text-light);
  letter-spacing: 0.2em;
  margin-top: 0.25rem;
  font-family: var(--font-sans);
}

/* ==========================================================================
   Philosophy / Principles Section (Accordion)
   ========================================================================== */
.about-section {
  background-color: var(--body-bg);
  border-bottom: 1.5px solid var(--border-color);
}

.principles-accordion {
  max-width: 850px;
  margin: 0 auto;
}

.principle-item {
  border-bottom: 1px solid var(--border-muted);
}

.principle-header {
  width: 100%;
  background: none;
  border: none;
  padding: 2.2rem 1.2rem;
  display: flex;
  align-items: center;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.principle-header:hover {
  color: var(--accent);
}

.principle-num {
  font-size: 1.45rem;
  color: var(--gold);
  width: 60px;
  font-weight: 700;
}

.principle-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  flex-grow: 1;
  color: var(--primary-bg);
}

.toggle-arrow {
  font-size: 1rem;
  color: var(--primary-light);
  transition: transform var(--transition-fast);
}

/* Content Area */
.principle-content {
  display: none;
}

.principle-content:not([hidden]) {
  display: block;
}

.principle-content[hidden="until-found"] {
  display: block;
}

.principle-inner {
  padding: 0 1.2rem 2.8rem 60px;
}

.principle-inner p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
}

.principle-specs {
  background-color: var(--card-bg);
  border: 1px solid var(--border-muted);
  padding: 1.2rem;
  border-radius: var(--border-radius-sm);
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.principle-specs span {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-sans);
}

/* Active header state via JS */
.principle-item.active .toggle-arrow {
  transform: rotate(180deg);
  color: var(--accent);
}

/* ==========================================================================
   Menu Section (Tabbed Layout)
   ========================================================================== */
.menu-section {
  background-color: var(--body-bg);
  border-bottom: 1.5px solid var(--border-color);
}

.menu-tabs-wrapper {
  max-width: 1000px;
  margin: 0 auto;
}

.menu-tab-list {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 4rem;
  border-bottom: 1.5px solid var(--border-color);
  padding-bottom: 0.8rem;
}

.menu-tab-btn {
  background: none;
  border: none;
  color: var(--primary-light);
  font-size: 1.1rem;
  font-family: var(--font-base);
  font-weight: 700;
  cursor: pointer;
  padding: 0.5rem 1.5rem;
  position: relative;
  transition: color var(--transition-fast);
  letter-spacing: 0.05em;
}

.menu-tab-btn::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background-color: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.menu-tab-btn:hover {
  color: var(--text-dark);
}

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

.menu-tab-btn.active::after {
  transform: scaleX(1);
}

/* Panel display control */
.menu-panel {
  display: none;
}

.menu-panel:not([hidden]) {
  display: block;
}

.menu-panel[hidden="until-found"] {
  display: block;
}

/* Menu Grid */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  align-items: start;
}

.menu-card {
  background-color: var(--card-bg);
  border: 1.5px solid var(--border-muted);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.menu-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.card-featured {
  border-color: var(--gold);
  grid-column: span 2;
  flex-direction: row;
}

@media (max-width: 850px) {
  .card-featured {
    grid-column: span 1;
    flex-direction: column;
  }
}

.menu-visual {
  height: 220px;
  background-color: #f3ede2;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-muted);
}

.card-featured .menu-visual {
  width: 40%;
  height: auto;
  min-height: 240px;
  border-bottom: none;
  border-right: 1px solid var(--border-muted);
}

@media (max-width: 850px) {
  .card-featured .menu-visual {
    width: 100%;
    min-height: 200px;
    border-right: none;
    border-bottom: 1px solid var(--border-muted);
  }
}

.menu-badge-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-base);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-light);
  background-color: var(--accent);
  padding: 0.2rem 0.8rem;
  letter-spacing: 0.1em;
  border-radius: var(--border-radius-sm);
}

.menu-item-svg {
  width: 80%;
  height: 80%;
  display: block;
}

.menu-info {
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-featured .menu-info {
  width: 60%;
}

@media (max-width: 850px) {
  .card-featured .menu-info {
    width: 100%;
  }
}

.menu-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--primary-bg);
  letter-spacing: 0.05em;
}

.menu-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 1rem;
  line-height: 1.1;
}

.tax-in {
  font-family: var(--font-base);
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--primary-light);
  margin-left: 0.2rem;
}

.menu-desc {
  font-size: 0.88rem;
  color: var(--primary-light);
  line-height: 1.7;
  margin-bottom: 1.8rem;
  flex-grow: 1;
  font-family: var(--font-sans);
}

.menu-card-footer {
  border-top: 1px dashed var(--border-muted);
  padding-top: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.option-info {
  font-size: 0.78rem;
  color: var(--primary-light);
  font-style: italic;
  font-family: var(--font-sans);
}

.btn-takeout-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.4rem;
  background-color: var(--accent);
  color: var(--text-light);
  font-family: var(--font-base);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.btn-takeout-link:hover {
  background-color: var(--accent-dark);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   お座敷・個室のご案内 Section
   ========================================================================== */
.rooms-section {
  background-color: var(--body-bg);
  border-bottom: 1.5px solid var(--border-color);
}

.rooms-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  margin-top: 2rem;
}

@media (max-width: 850px) {
  .rooms-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.room-pane {
  background-color: var(--card-bg);
  border: 1px solid var(--border-muted);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.room-visual-art {
  height: 200px;
  background-color: #fbfbf9;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-muted);
}

.room-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.room-detail-info {
  padding: 2.2rem;
}

.room-detail-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-bg);
  margin-bottom: 0.8rem;
  letter-spacing: 0.05em;
}

.room-detail-info p {
  font-size: 0.88rem;
  color: var(--primary-light);
  line-height: 1.8;
  font-family: var(--font-sans);
}

/* ==========================================================================
   Access Section
   ========================================================================== */
.access-section {
  background-color: var(--primary-bg);
  color: var(--text-light);
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 5rem;
  align-items: center;
}

.access-info-pane h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.access-intro-text {
  color: var(--border-color);
  margin-bottom: 2.2rem;
  font-family: var(--font-sans);
}

.access-details-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.access-details-list li {
  font-size: 0.95rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: flex-start;
}

.access-details-list strong {
  color: var(--gold);
  display: inline-block;
  width: 140px;
  font-family: var(--font-base);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.time-block {
  display: block;
}

.access-map-pane {
  background-color: #261912;
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  box-shadow: 0 15px 45px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.03);
}

.map-frame {
  position: relative;
  overflow: hidden;
}

.map-svg {
  width: 100%;
  height: auto;
  display: block;
}

.map-btn-overlay {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
}

/* ==========================================================================
   Booking & Request Form (Split UI with :has() logic)
   ========================================================================== */
.booking-section {
  background-color: var(--body-bg);
  border-top: 1px solid var(--border-color);
}

.interactive-booking-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 4rem;
  align-items: start;
}

/* Left Dialogue Pane */
.guide-dialogue-pane {
  position: sticky;
  top: 110px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius-sm);
  display: flex;
  flex-direction: column;
}

.live-status-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  border-bottom: 1.5px solid var(--border-muted);
  padding-bottom: 0.6rem;
}

.live-indicator {
  width: 8px;
  height: 8px;
  background-color: #2d5a27;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px #2d5a27;
  animation: pulse-green 1.8s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.live-status-header h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.dialogue-bubble-wrapper {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  margin-top: 0.5rem;
}

.avatar-calligraphy {
  width: 52px;
  height: 52px;
  background-color: var(--primary-bg);
  color: var(--gold);
  font-family: var(--font-base);
  font-size: 1.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 15px rgba(197, 155, 39, 0.2);
}

.dialogue-bubble {
  background-color: var(--body-bg);
  border-radius: var(--border-radius-sm);
  padding: 1.2rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.dialogue-bubble::before {
  content: '';
  position: absolute;
  top: 15px;
  left: -10px;
  border-width: 10px 10px 10px 0;
  border-style: solid;
  border-color: transparent var(--border-color) transparent transparent;
}

.dialogue-bubble::after {
  content: '';
  position: absolute;
  top: 15px;
  left: -8px;
  border-width: 9px 9px 9px 0;
  border-style: solid;
  border-color: transparent var(--body-bg) transparent transparent;
}

.bubble-text {
  font-size: 0.88rem;
  color: var(--text-dark);
  line-height: 1.65;
  font-family: var(--font-sans);
}

.booking-rules-card {
  margin-top: 2rem;
  background-color: var(--body-bg);
  border-left: 4px solid var(--gold);
  padding: 1.2rem;
  border-radius: var(--border-radius-sm);
  width: 100%;
}

.booking-rules-card h4 {
  font-size: 0.9rem;
  color: var(--primary-bg);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.booking-rules-card p {
  font-size: 0.8rem;
  color: var(--primary-light);
  line-height: 1.6;
  font-family: var(--font-sans);
}

/* Right Form Pane */
.form-pane {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 3rem;
  box-shadow: var(--shadow-sm);
}

.form-step-fieldset {
  border: none;
  margin-bottom: 2.5rem;
}

.form-step-fieldset legend {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-bg);
  margin-bottom: 1.2rem;
  display: block;
  letter-spacing: 0.05em;
}

/* Purpose Radio Cards */
.purpose-selection-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.purpose-radio-card {
  cursor: pointer;
}

.purpose-radio-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.purpose-card-inner {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.2rem;
  background-color: var(--body-bg);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.p-icon {
  font-size: 1.8rem;
}

.p-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--primary-bg);
  display: block;
}

.p-desc {
  font-size: 0.8rem;
  color: var(--primary-light);
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-sans);
}

.purpose-radio-card:hover .purpose-card-inner {
  border-color: var(--accent);
}

.purpose-radio-card input:checked + .purpose-card-inner {
  border-color: var(--accent);
  background-color: var(--accent-light);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   CSS Form Dynamic Display using :has()
   ========================================================================== */
.form-dynamic-group {
  display: none;
  margin-bottom: 2rem;
  border-top: 1.5px dashed var(--border-color);
  padding-top: 2rem;
}

/* Router logic */
.okina-form:has(input[value="seat_reserve"]:checked) .group-seat-reserve {
  display: block;
}

.okina-form:has(input[value="takeout"]:checked) .group-takeout {
  display: block;
}

.okina-form:has(input[value="banquet_consult"]:checked) .group-banquet {
  display: block;
}

/* Input Fields Grouping */
.field-group {
  margin-bottom: 1.8rem;
  display: flex;
  flex-direction: column;
  position: relative;
}

.field-group label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-bg);
  margin-bottom: 0.5rem;
}

.required {
  color: var(--error);
  font-size: 0.8rem;
  vertical-align: middle;
  margin-left: 0.2rem;
}

.input-wrapper {
  position: relative;
}

.input-wrapper input[type="text"],
.input-wrapper input[type="tel"],
.input-wrapper input[type="email"],
.input-wrapper input[type="datetime-local"],
.input-wrapper select,
.input-wrapper textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--border-color);
  background-color: var(--body-bg);
  border-radius: var(--border-radius-sm);
  color: var(--text-dark);
  transition: all var(--transition-fast);
}

.input-wrapper select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232d5a27' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.2em;
  padding-right: 2.5rem;
}

.input-wrapper textarea {
  resize: vertical;
}

.input-wrapper input:focus,
.input-wrapper select:focus,
.input-wrapper textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.08);
}

/* Custom Checkbox/Radio */
.checkbox-radio-wrapper {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.2rem;
}

.check-radio-item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.check-radio-item input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.help-text {
  font-size: 0.78rem;
  color: var(--primary-light);
  margin-top: 0.4rem;
  line-height: 1.45;
  font-family: var(--font-sans);
}

/* ==========================================================================
   CSS Form Validation using :has() & :user-invalid
   ========================================================================== */
.error-message {
  display: none;
  color: var(--error);
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 0.4rem;
  font-family: var(--font-sans);
}

/* User invalid states styling */
.field-group:has(:user-invalid) input,
.field-group:has(:user-invalid) select,
.field-group:has(:user-invalid) textarea {
  border-color: var(--error);
  background-color: var(--error-bg);
}

.field-group:has(:user-invalid) .error-message {
  display: block;
}

.field-group:has(:user-invalid) label {
  color: var(--error);
}

/* Status icon */
.validation-status-icon {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 1.1rem;
  display: none;
}

.field-group:has(:user-invalid) .validation-status-icon {
  display: block;
}

.field-group:has(:user-invalid) .validation-status-icon::after {
  content: '✦';
  color: var(--error);
}

/* JS Fallback validation support classes */
.field-group.has-error input,
.field-group.has-error select,
.field-group.has-error textarea {
  border-color: var(--error);
  background-color: var(--error-bg);
}
.field-group.has-error .error-message {
  display: block;
}
.field-group.has-error label {
  color: var(--error);
}

/* Submit area */
.form-submit-wrapper {
  margin-top: 2rem;
}

.btn-submit {
  width: 100%;
  background-color: var(--accent);
  color: var(--text-light);
  font-size: 1.05rem;
  padding: 1.1rem 0;
  font-weight: 700;
  border-color: var(--accent);
}

.btn-submit:hover {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
}

.btn-submit:disabled {
  background-color: var(--primary-light);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Spinner */
.spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: var(--text-light);
  animation: spin 0.8s linear infinite;
  margin-left: 0.6rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn-submit.loading .spinner {
  display: inline-block;
}

.btn-submit.loading .btn-text {
  opacity: 0.8;
}

/* Form success box */
.form-success-box {
  background-color: var(--primary-bg);
  border: 1.5px solid var(--gold);
  border-radius: var(--border-radius-sm);
  padding: 3rem;
  text-align: center;
  color: var(--text-light);
  margin-top: 1.5rem;
  animation: fade-in-up var(--transition-normal);
}

.success-icon {
  width: 56px;
  height: 56px;
  background-color: var(--accent);
  color: var(--text-light);
  border-radius: 50%;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 0 20px rgba(45, 90, 39, 0.3);
  font-weight: 700;
}

.form-success-box h3 {
  font-family: var(--font-base);
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.form-success-box p {
  font-size: 0.9rem;
  color: var(--border-color);
  line-height: 1.85;
  font-family: var(--font-sans);
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Footer Section
   ========================================================================== */
.main-footer {
  background-color: var(--primary-bg);
  color: var(--text-light);
  padding: var(--spacing-lg) 0;
  border-top: 3px solid var(--gold);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-base);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.footer-brand .accent-text {
  color: var(--gold);
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--primary-light);
  margin-bottom: 3rem;
  letter-spacing: 0.1em;
  font-family: var(--font-sans);
}

.footer-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2.2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-base);
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  font-size: 0.78rem;
  color: var(--primary-light);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 2.5rem;
  font-family: var(--font-sans);
}

/* ==========================================================================
   Scroll-driven Animation (Visual Slide & Fade-in)
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  @supports ((animation-timeline: view()) and (animation-range: entry)) {
    @keyframes scroll-reveal {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .scroll-trigger {
      animation: scroll-reveal auto linear forwards;
      animation-timeline: view();
      animation-range: entry 5% entry 30%;
    }
  }
}

/* JS Fallback style */
.js-scroll-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js-scroll-animate.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 4rem;
    text-align: center;
  }
  
  .hero-text-side p {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-visual-side {
    max-width: 380px;
    margin: 0 auto;
    width: 100%;
  }

  .access-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .interactive-booking-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .guide-dialogue-pane {
    position: static;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-text-side h1 {
    font-size: 2.5rem;
  }
  
  .section-header h2 {
    font-size: 1.85rem;
  }
  
  .catalog-tab-list {
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    border-bottom: none;
  }
  
  .menu-tab-btn {
    width: 100%;
    text-align: center;
    border-bottom: 1.5px solid var(--border-color);
    padding: 0.8rem 0;
  }
  
  .menu-tab-btn::after {
    display: none;
  }

  .principle-inner {
    padding: 0 1.2rem 1.8rem 1.2rem;
  }
  
  .principle-header {
    padding: 1.3rem 1rem;
  }

  .form-pane {
    padding: 1.5rem;
  }
}