/* ==========================================================================
   Design System & Variable Definitions
   ========================================================================== */
:root {
  /* Color Palette - Classic & Traditional Barber */
  --color-primary: #1A2E40;        /* Deep Navy */
  --color-primary-dark: #101E2B;   /* Dark Navy Black */
  --color-primary-light: #2D4356;  /* Slate Navy */
  --color-accent: #C5A880;         /* Brass Gold */
  --color-accent-dark: #9A7B52;    /* Dark Antique Gold */
  --color-accent-light: #DFBA8A;   /* Bright Gold */
  
  --color-wood: #2C1F16;           /* Dark Wood Mahogany */
  
  --color-bg-base: #F4F6F8;        /* Soft Cool Grey */
  --color-bg-panel: #FFFFFF;
  --color-bg-dark: #E8ECEF;        /* Classic Cement Grey */
  
  --color-text-main: #212529;
  --color-text-muted: #495057;
  --color-text-light: #FFFFFF;
  
  --color-border: #CED4DA;
  --color-border-accent: #E5D5C0;
  
  --color-error: #C92A2A;          /* Barber Pole Red */
  --color-error-bg: #FFF5F5;
  --color-success: #1864AB;        /* Barber Pole Blue */
  --color-success-bg: #E7F5FF;

  /* Typography */
  --font-serif: 'Noto Serif JP', 'Georgia', serif;
  --font-sans: 'Montserrat', 'Noto Sans JP', sans-serif;
  --font-display: 'Playfair Display', serif;

  /* Layout Constants */
  --header-height: 80px;
  --border-radius: 4px;            /* Sharp, traditional square feel */
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --box-shadow-subtle: 0 4px 15px rgba(26, 46, 64, 0.05);
  --box-shadow-medium: 0 10px 25px rgba(26, 46, 64, 0.12);
}

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

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

body {
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* アクセシビリティ：スキップリンク */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  padding: 10px 20px;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Subtitle & Title Utilities */
.section-subtitle {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin-bottom: 24px;
  position: relative;
  display: inline-block;
}

.section-desc {
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto 40px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition-smooth);
}

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

.btn-accent:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(197, 168, 128, 0.25);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
}

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

.btn-large {
  padding: 16px 40px;
  font-size: 1rem;
  width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(26, 46, 64, 0.98);
  border-bottom: 2px solid var(--color-accent);
  z-index: 1000;
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

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

.logo-text .en {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  line-height: 1.2;
}

.logo-text .ja {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

/* Nav Menu */
.nav-menu ul {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  color: var(--color-bg-dark);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition-smooth);
}

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

.btn-primary-nav {
  padding: 8px 20px;
  font-size: 0.8rem;
  background-color: var(--color-accent);
  color: var(--color-primary-dark) !important;
  border-radius: var(--border-radius);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.hamburger-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition-smooth);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-text-light);
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    45deg,
    var(--color-error),
    var(--color-error) 10px,
    var(--color-text-light) 10px,
    var(--color-text-light) 20px,
    var(--color-success) 20px,
    var(--color-success) 30px,
    var(--color-text-light) 30px,
    var(--color-text-light) 40px
  );
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 50px;
}

.hero-sub {
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--color-bg-dark);
  margin-bottom: 40px;
  max-width: 550px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.hero-actions .btn-outline {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-actions .btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-svg {
  width: 100%;
  max-width: 440px;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.3));
}

#cylinder-clip {
  /* Clips signpole stripe pattern to cylindrical container shape */
  clip-path: inset(40px 15px 40px 15px round 15px);
}

/* ==========================================================================
   Dashboard (Live Status)
   ========================================================================== */
.dashboard {
  margin-top: -30px;
  position: relative;
  z-index: 10;
  padding-bottom: 60px;
}

.dashboard-panel {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-medium);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  padding: 30px;
}

.dashboard-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-bg-dark);
  padding-bottom: 16px;
}

.status-badge {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 2px;
  letter-spacing: 0.1em;
}

.live-badge {
  background-color: var(--color-error-bg);
  color: var(--color-error);
  animation: pulse 2s infinite;
}

.dashboard-header h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-primary-dark);
  font-weight: 600;
}

#dashboard-date-display {
  font-family: var(--font-sans);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  margin-left: auto;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.time-slot {
  background-color: var(--color-bg-base);
  border-radius: var(--border-radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.time-slot:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-subtle);
  border-color: var(--color-accent);
}

.slot-time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.slot-status {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
}

.status-ok {
  color: var(--color-success);
}

.status-warn {
  color: var(--color-accent-dark);
}

.status-full {
  color: var(--color-text-muted);
}

.slot-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.dashboard-footer {
  margin-top: 24px;
  text-align: center;
}

.dashboard-note {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
  padding: 100px 0;
  background-color: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 4.5fr 5.5fr;
  align-items: center;
  gap: 60px;
}

.about-image {
  position: relative;
  overflow: hidden;
  box-shadow: var(--box-shadow-medium);
  border: 2px solid var(--color-accent);
  background-color: var(--color-primary-dark);
  line-height: 0;
}

.about-img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.about-image:hover .about-img {
  transform: scale(1.03);
}

.about-text h2 {
  font-size: 2.25rem;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Shaving Hero Section (Traditional Face Shaving)
   ========================================================================== */
.shaving-hero {
  padding: 100px 0;
  background-color: var(--color-bg-panel);
  border-bottom: 1px solid var(--color-border);
}

.shaving-grid {
  display: grid;
  grid-template-columns: 5.5fr 4.5fr;
  align-items: center;
  gap: 60px;
}

.shaving-visual {
  order: 2;
  overflow: hidden;
  box-shadow: var(--box-shadow-medium);
  border: 2px solid var(--color-accent);
  line-height: 0;
}

.shaving-img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.shaving-visual:hover .shaving-img {
  transform: scale(1.03);
}

.shaving-content {
  order: 1;
}

.shaving-content p {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.shaving-content p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Features Section (3 Commitments)
   ========================================================================== */
.features {
  padding: 100px 0;
  background-color: var(--color-bg-base);
  border-bottom: 1px solid var(--color-border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  padding: 40px 30px;
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-subtle);
  transition: var(--transition-smooth);
  position: relative;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: transparent;
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--box-shadow-medium);
  border-color: var(--color-accent);
}

.feature-card:hover::after {
  background-color: var(--color-accent);
}

.feature-icon {
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background-color: var(--color-bg-base);
  border-radius: 50%;
  color: var(--color-primary);
  transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon {
  background-color: var(--color-primary);
  color: var(--color-accent);
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 16px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Catalog (Style Guide) Section
   ========================================================================== */
.catalog {
  padding: 100px 0;
  background-color: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.catalog-item {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow-subtle);
  border: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.catalog-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--box-shadow-medium);
  border-color: var(--color-accent);
}

.catalog-media {
  overflow: hidden;
  position: relative;
  background-color: var(--color-primary-dark);
}

.style-img, .style-svg {
  width: 100%;
  display: block;
  transition: var(--transition-smooth);
}

.catalog-item:hover .style-img,
.catalog-item:hover .style-svg {
  transform: scale(1.03);
}

.catalog-info {
  padding: 24px;
}

.catalog-info h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

.style-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.style-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-primary);
  background-color: var(--color-bg-dark);
  padding: 4px 12px;
  border-radius: 2px;
  border-left: 3px solid var(--color-accent);
  font-weight: 600;
}

/* ==========================================================================
   Menu & Price Section
   ========================================================================== */
.menu {
  padding: 100px 0;
  background-color: var(--color-bg-base);
  border-bottom: 1px solid var(--color-border);
}

.menu-grid {
  display: grid;
  grid-template-columns: 6fr 4fr;
  gap: 50px;
}

/* Accordions */
.accordion-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.menu-accordion {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--box-shadow-subtle);
  transition: var(--transition-smooth);
}

.menu-accordion[open] {
  box-shadow: var(--box-shadow-medium);
  border-color: var(--color-accent);
}

.accordion-trigger {
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.accordion-trigger::-webkit-details-marker {
  display: none;
}

.chevron {
  transition: transform 0.3s ease;
  color: var(--color-accent-dark);
}

.menu-accordion[open] .chevron {
  transform: rotate(180deg) scaleY(-1);
}

.accordion-content {
  padding: 0 24px 24px 24px;
  border-top: 1px solid var(--color-border);
  animation: slideDown 0.3s ease;
}

.price-item {
  padding: 20px 0;
  border-bottom: 1px dashed var(--color-border);
}

.price-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.price-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  gap: 16px;
}

.price-header h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text-main);
  font-weight: 600;
}

.price-header .price {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.price-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Simulator Panel */
.simulator-panel {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  padding: 30px;
  box-shadow: var(--box-shadow-subtle);
  align-self: start;
}

.simulator-panel h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

.simulator-intro {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.sim-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sim-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.sim-group select {
  padding: 12px;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  font-family: var(--font-sans);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  outline: none;
  transition: var(--transition-smooth);
}

.sim-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 46, 64, 0.12);
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.checkbox-container input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.85rem;
  color: var(--color-text-main);
}

.sim-result {
  margin-top: 10px;
  background-color: var(--color-bg-base);
  border-radius: var(--border-radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--color-border);
}

.result-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.discount-text {
  color: var(--color-error);
  font-weight: 600;
}

.total-row {
  border-top: 1px dashed var(--color-border);
  padding-top: 12px;
  margin-top: 4px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark) !important;
}

.total-row #res-total {
  font-size: 1.3rem;
  color: var(--color-error);
}

.sim-alert-text {
  font-size: 0.78rem;
  color: var(--color-error);
  line-height: 1.4;
  margin-top: 4px;
}

/* ==========================================================================
   Access & Map Section
   ========================================================================== */
.access {
  padding: 100px 0;
  background-color: var(--color-bg-base);
  border-bottom: 1px solid var(--color-border);
}

.access-grid {
  display: grid;
  grid-template-columns: 5.5fr 6.5fr;
  align-items: center;
  gap: 60px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}

.info-table th, .info-table td {
  padding: 16px 0;
  border-bottom: 1px dashed var(--color-border);
  text-align: left;
}

.info-table th {
  font-family: var(--font-serif);
  color: var(--color-primary-dark);
  font-weight: 600;
  width: 25%;
  vertical-align: top;
}

.info-table td {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.info-table td .note {
  display: block;
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 4px;
  font-weight: 600;
}

.access-map {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow-medium);
  border: 1px solid var(--color-border);
}

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

@keyframes ping {
  0% { transform: scale(1); opacity: 0.4; }
  100% { transform: scale(1.6); opacity: 0; }
}

.ping {
  transform-origin: 280px 198px;
  animation: ping 2.5s ease-out infinite;
}

/* ==========================================================================
   Booking (Reservation) Form
   ========================================================================== */
.booking {
  padding: 100px 0;
  background-color: var(--color-bg-dark);
}

.booking-wrapper {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  padding: 50px;
  box-shadow: var(--box-shadow-medium);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  max-width: 900px;
  margin: 0 auto;
}

.booking-header {
  text-align: center;
  margin-bottom: 40px;
}

.booking-header p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Form Styles */
.booking-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.required-badge {
  color: var(--color-error);
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  background-color: var(--color-bg-panel);
  box-shadow: 0 0 0 3px rgba(26, 46, 64, 0.12);
}

.form-consent {
  margin-top: 10px;
}

.form-consent .checkbox-container {
  display: flex;
  align-items: center;
}

/* ==========================================================================
   CSS Form Validation using :user-invalid and :has()
   ========================================================================== */
.error-msg {
  display: none;
  color: var(--color-error);
  font-size: 0.8rem;
  margin-top: 4px;
  font-weight: 600;
}

/* Style fields that are invalid AFTER user interaction */
.form-group input:user-invalid,
.form-group select:user-invalid,
.form-group textarea:user-invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-group input:user-invalid + .error-msg,
.form-group select:user-invalid + .error-msg,
.form-group textarea:user-invalid + .error-msg {
  display: block;
}

/* Checkbox specific validation */
.form-consent input[type="checkbox"]:user-invalid + .checkbox-label {
  color: var(--color-error);
}

.form-consent input[type="checkbox"]:user-invalid ~ .error-msg {
  display: block;
}

/* Sync valid required fields styling */
.form-group input:required:user-valid,
.form-group select:required:user-valid {
  border-color: var(--color-success);
}

/* :has() Parent Selector dynamic feedback */
.form-group:has(:user-invalid) {
  border-color: rgba(201, 42, 42, 0.3);
}

.booking-form:has(:user-invalid) button[type="submit"] {
  opacity: 0.85;
  cursor: not-allowed;
}

/* Alert Boxes */
.alert-info-box {
  background-color: var(--color-error-bg);
  border-left: 4px solid var(--color-error);
  color: var(--color-error);
  padding: 16px;
  border-radius: var(--border-radius);
  font-size: 0.88rem;
  line-height: 1.6;
  text-align: left;
  margin-top: 20px;
}

.alert-success-box {
  background-color: var(--color-success-bg);
  border-left: 4px solid var(--color-success);
  color: var(--color-success);
  padding: 16px;
  border-radius: var(--border-radius);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* Fallback Classes */
.user-invalid-fallback {
  border-color: var(--color-error) !important;
  background-color: var(--color-error-bg) !important;
}

.user-invalid-fallback + .error-msg {
  display: block !important;
}

/* ==========================================================================
   Assistant (Owner Takahashi) Chat Box
   ========================================================================== */
.assistant-wrapper {
  display: flex;
  gap: 20px;
  background-color: var(--color-bg-base);
  border-radius: var(--border-radius);
  padding: 24px;
  border: 1px solid var(--color-border);
  margin-top: 10px;
  align-items: center;
}

.assistant-avatar {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
}

.assistant-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.assistant-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.assistant-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  transition: var(--transition-smooth);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(16, 30, 43, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  z-index: 2000;
  transition: opacity 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background-color: var(--color-bg-panel);
  border-radius: var(--border-radius);
  max-width: 520px;
  width: 90%;
  padding: 40px;
  position: relative;
  box-shadow: var(--box-shadow-medium);
  border: 2px solid var(--color-accent);
  transform: translateY(20px);
  transition: transform 0.4s ease;
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-error);
}

.modal-body {
  text-align: center;
}

.success-icon {
  margin-bottom: 24px;
}

.modal-body h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.modal-summary {
  background-color: var(--color-bg-base);
  border-radius: var(--border-radius);
  padding: 20px;
  text-align: left;
  margin-bottom: 28px;
  border: 1px solid var(--color-border);
}

.modal-summary h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
  border-bottom: 1px dashed var(--color-border);
  padding-bottom: 6px;
}

.modal-summary p {
  font-size: 0.85rem;
  margin-bottom: 4px;
  color: var(--color-text-main);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  padding: 80px 0 40px 0;
  border-top: 4px solid var(--color-accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 5fr 3fr 4fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-logo svg {
  stroke: var(--color-accent);
}

.footer-tag {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-bg-dark);
  line-height: 1.6;
}

.footer-links h3, .footer-contact h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 8px;
}

.footer-links h3::after, .footer-contact h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--color-accent);
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--color-bg-dark);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--color-text-light);
  padding-left: 4px;
}

.footer-contact p {
  font-size: 0.85rem;
  color: var(--color-bg-dark);
  margin-bottom: 12px;
}

.footer-contact .tel {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent-light);
  font-family: var(--font-sans);
}

.footer-contact .note {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-border);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-bg-dark);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.5; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .catalog-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  .site-header {
    height: var(--header-height);
  }

  /* Mobile Nav */
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-primary-dark);
    padding: 40px;
    border-top: 1px solid var(--color-accent);
    transform: translateX(100%);
    transition: transform 0.4s ease;
    overflow-y: auto;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-menu ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .nav-menu a {
    font-size: 1.1rem;
    color: var(--color-text-light);
  }

  .btn-primary-nav {
    padding: 12px 30px;
    font-size: 1rem;
    border-radius: var(--border-radius);
  }

  /* Hamburger transform */
  .menu-toggle.active .hamburger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active .hamburger-bar:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active .hamburger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content {
    order: 2;
  }

  .hero-visual {
    order: 1;
  }

  .hero-actions {
    justify-content: center;
  }

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

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

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

  .shaving-visual {
    order: 1;
  }
  .shaving-content {
    order: 2;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .booking-wrapper {
    padding: 30px 20px;
  }

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

  .footer-brand {
    grid-column: span 1;
  }
}