/* JIKU Yoga & Mind Set - Design Tokens & Stylesheet */

:root {
  /* Organic Calming Palette */
  --color-bg-base: #FAF8F6;
  --color-bg-surface: #FFFFFF;
  --color-bg-surface-glass: rgba(255, 255, 255, 0.7);
  
  --color-accent-sage: #8FA89B;
  --color-accent-sage-dim: rgba(143, 168, 155, 0.15);
  --color-accent-gold: #D4A373;
  --color-accent-gold-dim: rgba(212, 163, 115, 0.15);
  
  --color-text-primary: #2C3531;
  --color-text-secondary: #5F6E67;
  --color-text-muted: #8E9E96;
  
  /* Fonts */
  --font-serif-kaisei: 'Kaisei Decol', serif;
  --font-serif-jp: 'Noto Serif JP', serif;
  --font-sans-jp: 'Noto Sans JP', sans-serif;
  --font-sans-en: 'Outfit', sans-serif;
  
  --sidebar-width: 80px;
  --header-height: 80px;
  
  --shadow-subtle: 0 4px 20px rgba(44, 53, 49, 0.05);
  --shadow-medium: 0 10px 30px rgba(44, 53, 49, 0.08);
  --shadow-hover: 0 15px 40px rgba(143, 168, 155, 0.2);
  
  --border-subtle: 1px solid rgba(143, 168, 155, 0.2);
  --border-glass: 1px solid rgba(255, 255, 255, 0.4);
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
}

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

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

body {
  width: 100%;
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Hide default cursor on desktop where custom cursor works */
@media (pointer: fine) {
  body {
    cursor: none;
  }
  a, button, select, input, textarea, summary, .interactive {
    cursor: none;
  }
}

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

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--color-accent-sage);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* Custom Interactive LERP Cursor - Hidden on mobile/touch, visible on desktop pointer */
.custom-cursor,
.custom-cursor-follower {
  display: none;
}

@media (pointer: fine) {
  .custom-cursor {
    display: block;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent-sage);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, background-color 0.2s;
    box-shadow: 0 0 8px var(--color-accent-sage);
  }

  .custom-cursor-follower {
    display: block;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-accent-sage);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.08s ease-out, width 0.3s, height 0.3s, border-color 0.3s, background-color 0.3s;
  }

  /* Hover States for custom cursor */
  body.hovering-link .custom-cursor {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent-gold);
  }

  body.hovering-link .custom-cursor-follower {
    width: 48px;
    height: 48px;
    border-color: var(--color-accent-gold);
    background-color: rgba(212, 163, 115, 0.05);
  }
}

/* App Container Layout */
.app-container {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  width: 100%;
  min-height: 100vh;
  position: relative;
}

/* Interactive Background Canvas */
.bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* Sidebar Navigation (Desktop Only) */
.left-nav {
  background: rgba(250, 248, 246, 0.85);
  border-right: var(--border-subtle);
  backdrop-filter: blur(15px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 40px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 100;
}

.nav-brand {
  position: relative;
}

.brand-dot {
  display: block;
  width: 16px;
  height: 16px;
  background-color: var(--color-accent-sage);
  border-radius: 50%;
  position: relative;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand-dot::after {
  content: '';
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border: 1px solid var(--color-accent-sage);
  border-radius: 50%;
  animation: pulse-ring 2.5s infinite;
}

.nav-brand:hover .brand-dot {
  transform: scale(1.2);
  background-color: var(--color-accent-gold);
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 0.3; }
  100% { transform: scale(1.3); opacity: 0; }
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
}

.nav-icon {
  width: 22px;
  height: 22px;
  opacity: 0.6;
  transition: transform 0.3s ease, opacity 0.3s ease, fill 0.3s ease;
}

.nav-label {
  font-family: var(--font-sans-en);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  opacity: 0.5;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.nav-links li:hover a,
.nav-links li.active a {
  color: var(--color-accent-sage);
}

.nav-links li:hover .nav-icon,
.nav-links li.active .nav-icon {
  opacity: 1;
  transform: scale(1.1);
  fill: var(--color-accent-sage);
}

.nav-links li:hover .nav-label,
.nav-links li.active .nav-label {
  opacity: 1;
}

/* Tooltips */
.nav-links li::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 90px;
  top: 50%;
  transform: translateY(-50%) scale(0.9);
  background: var(--color-bg-surface);
  border: var(--border-subtle);
  padding: 6px 12px;
  font-family: var(--font-sans-en);
  font-size: 10px;
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: var(--shadow-subtle);
}

.nav-links li:hover::after {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.menu-toggle {
  display: none; /* Mobile Only */
}

/* Main Content Wrapper */
.main-content {
  display: flex;
  flex-direction: column;
  min-width: 0; /* Critical for CSS Grid item shrinkage */
}

/* Header */
.site-header {
  height: var(--header-height);
  padding: 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: rgba(250, 248, 246, 0.85);
  backdrop-filter: blur(15px);
  z-index: 90;
  border-bottom: var(--border-subtle);
}

.menu-toggle {
  display: none;
}

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

.brand-jiku {
  font-family: var(--font-serif-kaisei);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.brand-divider {
  font-family: var(--font-sans-en);
  font-weight: 300;
  color: var(--color-accent-sage);
}

.brand-title {
  font-family: var(--font-serif-jp);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-top-link {
  font-family: var(--font-sans-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-text-secondary);
  transition: color 0.3s ease;
}

.nav-top-link:hover {
  color: var(--color-accent-sage);
}

/* Custom Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  border-radius: 4px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent-sage);
  color: var(--color-bg-surface);
  box-shadow: 0 4px 14px rgba(143, 168, 155, 0.3);
}

.btn-primary:hover {
  background-color: var(--color-text-primary);
  box-shadow: 0 6px 20px rgba(44, 53, 49, 0.2);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: var(--color-accent-sage-dim);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

.nav-top-link.contact-btn {
  background-color: var(--color-accent-sage);
  color: var(--color-bg-surface);
  padding: 8px 18px;
  border-radius: 4px;
  font-family: var(--font-sans-en);
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s ease;
}

.nav-top-link.contact-btn:hover {
  background-color: var(--color-text-primary);
  color: var(--color-bg-surface);
}

.nav-top-link.stores-btn {
  border: 1px solid var(--color-accent-sage);
  color: var(--color-accent-sage);
  padding: 7px 16px;
  border-radius: 4px;
  font-family: var(--font-sans-en);
  transition: all 0.3s ease;
}

.nav-top-link.stores-btn:hover {
  background-color: var(--color-accent-sage-dim);
}

/* Sections Base */
.section-padding {
  padding: 100px 48px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

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

.mb-60 {
  margin-bottom: 60px;
}

.section-tag {
  font-family: var(--font-sans-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-accent-sage);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 12px;
}

/* Hero Section */
.hero-section {
  height: calc(100vh - var(--header-height));
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 80px;
  overflow: hidden;
}

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

.hero-bg {
  position: absolute;
  top: -5%;
  left: -5%;
  width: 110%;
  height: 110%;
  background-size: cover;
  background-position: center;
  transition: transform 0.1s ease-out;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(250, 248, 246, 0.95) 20%, rgba(250, 248, 246, 0.6) 60%, rgba(250, 248, 246, 0.1) 100%);
}

.hero-content {
  position: relative;
  z-index: 5;
  max-width: 580px;
}

.hero-concept-tag {
  font-size: 16px;
  letter-spacing: 0.25em;
  color: var(--color-accent-sage);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
}

.hero-title span {
  font-size: 24px;
  font-weight: 400;
  font-family: var(--font-sans-en);
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  display: inline-block;
  margin-left: 8px;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
}

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

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
}

.scroll-mouse {
  width: 20px;
  height: 32px;
  border: 1.5px solid var(--color-text-secondary);
  border-radius: 10px;
  position: relative;
}

.scroll-wheel {
  width: 3px;
  height: 6px;
  background-color: var(--color-text-secondary);
  border-radius: 1px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-anim 1.8s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { opacity: 0; transform: translate(-50%, 0); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 8px); }
}

.scroll-arrow {
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--color-text-secondary);
  border-bottom: 1.5px solid var(--color-text-secondary);
  transform: rotate(45deg);
  animation: arrow-anim 1.8s ease-in-out infinite;
}

@keyframes arrow-anim {
  0% { transform: translateY(0) rotate(45deg); opacity: 0.2; }
  50% { transform: translateY(4px) rotate(45deg); opacity: 1; }
  100% { transform: translateY(8px) rotate(45deg); opacity: 0.2; }
}

/* Kaisei Decol & Noto font helper classes */
.Kaisei {
  font-family: var(--font-serif-kaisei);
}

.Noto {
  font-family: var(--font-serif-jp);
}

/* Concept Section Layout */
.concept-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.concept-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--color-text-primary);
}

.concept-desc p {
  margin-bottom: 20px;
  color: var(--color-text-secondary);
}

.concept-desc p:last-child {
  margin-bottom: 0;
}

.concept-image-container {
  display: flex;
  justify-content: center;
  position: relative;
}

.tilt-element-wrapper {
  perspective: 1000px;
  position: relative;
  width: 100%;
}

.tilt-element {
  width: 100%;
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  border: var(--border-glass);
}

.concept-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: scale 0.5s ease;
}

.tilt-element-wrapper:hover .concept-img {
  scale: 1.05;
}

.concept-floating-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--color-bg-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-medium);
  z-index: 10;
  transform: translateZ(30px); /* 3D layer effect */
}

.card-number {
  font-family: var(--font-sans-en);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent-sage);
  line-height: 1;
  margin-bottom: 4px;
}

.card-text {
  font-family: var(--font-sans-en);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-secondary);
}

/* Instructor Section */
.instructor-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: center;
}

.instructor-image-container {
  display: flex;
  justify-content: center;
}

.instructor-img-frame {
  width: 100%;
  border-radius: 50% 50% 0 0;
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  border: 4px solid var(--color-bg-surface);
  background: var(--color-bg-surface);
}

.instructor-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  transform: scale(1.05);
}

.instructor-name {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.instructor-name .en-name {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.instructor-title {
  font-size: 13px;
  color: var(--color-accent-sage);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.instructor-bio p {
  margin-bottom: 20px;
  color: var(--color-text-secondary);
}

.credentials {
  margin-top: 36px;
  background-color: var(--color-bg-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-subtle);
}

.credentials h5 {
  font-family: var(--font-sans-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.credentials ul {
  list-style: none;
}

.credentials li {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.credentials li:last-child {
  margin-bottom: 0;
}

/* Lessons Section */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.lesson-card {
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.lesson-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.lesson-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.lesson-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.lesson-card:hover .lesson-card-img {
  transform: scale(1.08);
}

.lesson-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(44, 53, 49, 0.85);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 10px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.lesson-content {
  padding: 28px;
}

.lesson-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.lesson-card-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.lesson-highlights {
  list-style: none;
  border-top: var(--border-subtle);
  padding-top: 16px;
}

.lesson-highlights li {
  font-size: 12px;
  color: var(--color-accent-sage);
  margin-bottom: 6px;
}

.lesson-highlights li:last-child {
  margin-bottom: 0;
}

/* Schedule Section */
.schedule-table-wrapper {
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 700px;
}

.schedule-table th {
  padding: 16px 20px;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-primary);
  border-bottom: 2px solid var(--color-accent-sage);
}

.schedule-table td {
  padding: 20px;
  border-bottom: var(--border-subtle);
  vertical-align: middle;
}

.time-col {
  font-family: var(--font-sans-en);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-text-secondary);
  width: 130px;
  white-space: nowrap; /* Prevent line breaks at hyphens/spaces */
}

.class-cell {
  background-color: transparent;
  transition: background-color 0.3s ease;
}

.class-cell.highlight {
  background-color: var(--color-accent-sage-dim);
  border-radius: 4px;
}

.class-cell.regular {
  background-color: rgba(44, 53, 49, 0.02);
  border-radius: 4px;
}

.class-cell.empty {
  color: var(--color-text-muted);
  font-size: 12px;
}

.class-name {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.class-location {
  display: block;
  font-size: 11px;
  color: var(--color-text-secondary);
}

.schedule-note {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 24px;
  text-align: center;
}

/* Pricing Section */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.price-card {
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.price-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
}

.price-card.featured {
  border: 2px solid var(--color-accent-sage);
  transform: scale(1.03);
  box-shadow: var(--shadow-hover);
}

.price-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent-sage);
  color: #fff;
  font-family: var(--font-sans-en);
  font-size: 9px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.1em;
}

.price-header {
  text-align: center;
  border-bottom: var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.price-card-title {
  font-family: var(--font-sans-jp);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.price-card-subtitle {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.price-amount {
  color: var(--color-text-primary);
}

.price-amount .currency {
  font-size: 18px;
  font-weight: 700;
  vertical-align: super;
}

.price-amount .number {
  font-family: var(--font-sans-en);
  font-size: 38px;
  font-weight: 700;
}

.price-amount .tax {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.price-body ul {
  list-style: none;
  margin-bottom: 32px;
}

.price-body li {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  position: relative;
  padding-left: 18px;
}

.price-body li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent-sage);
  font-weight: bold;
}

/* Pricing Extra Styles */
.pricing-extra {
  margin-top: 56px;
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-md);
  padding: 32px 40px;
  backdrop-filter: blur(10px);
}

.extra-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 24px;
  text-align: center;
  position: relative;
}

.extra-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background-color: var(--color-accent-sage);
  margin: 8px auto 0;
}

.extra-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.extra-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: transform 0.3s ease;
}

.extra-card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.6);
}

.extra-info h6 {
  font-family: var(--font-sans-jp);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 6px 0 4px;
}

.extra-info p {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin: 0;
}

.extra-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-accent-sage);
  background-color: rgba(143, 168, 155, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
}

.extra-price-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  min-width: 140px;
}

.extra-amount {
  font-family: var(--font-sans-en);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.extra-amount .tax {
  font-family: var(--font-sans-jp);
  font-size: 11px;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 11px;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .extra-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .extra-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .extra-price-btn {
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* FAQ Section */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item[open] {
  box-shadow: var(--shadow-medium);
}

.faq-question {
  padding: 20px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-primary);
  list-style: none;
  position: relative;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-family: var(--font-sans-en);
  font-size: 20px;
  font-weight: 300;
  color: var(--color-accent-sage);
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 24px 24px;
  border-top: 1px solid rgba(143, 168, 155, 0.1);
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-answer p {
  margin-top: 16px;
}

/* Contact & SNS Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: stretch;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-block-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 20px;
}

.contact-block-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.line-cta-container {
  margin-bottom: 40px;
}

.line-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: #06C755;
  color: #fff;
  padding: 14px 28px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(6, 199, 85, 0.3);
  transition: all 0.3s ease;
}

.line-cta-btn:hover {
  background-color: #05B04B;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 199, 85, 0.4);
}

.line-icon {
  width: 24px;
  height: 24px;
}

.sns-link-group h5 {
  font-family: var(--font-sans-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.sns-icons {
  display: flex;
  gap: 16px;
}

.sns-icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: var(--border-subtle);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s ease;
}

.sns-icon-link svg {
  width: 20px;
  height: 20px;
}

.sns-icon-link:hover {
  background-color: var(--color-accent-sage);
  color: #fff;
  border-color: var(--color-accent-sage);
  transform: scale(1.08);
}

/* Contact Form */
.contact-form-block {
  background: var(--color-bg-surface-glass);
  border: var(--border-glass);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
}

.contact-form .form-group {
  margin-bottom: 24px;
}

.contact-form label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.contact-form label .required {
  background-color: var(--color-accent-gold-dim);
  color: #c9823f;
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 9px;
  font-weight: 500;
  margin-left: 6px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  background-color: rgba(250, 248, 246, 0.6);
  border: 1px solid rgba(143, 168, 155, 0.3);
  border-radius: 4px;
  font-family: var(--font-sans-jp);
  font-size: 14px;
  color: var(--color-text-primary);
  transition: all 0.3s ease;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--color-accent-sage);
  background-color: #fff;
  box-shadow: 0 0 10px rgba(143, 168, 155, 0.15);
}

/* Footer */
.site-footer {
  border-top: var(--border-subtle);
  background-color: var(--color-bg-surface);
  padding: 48px;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-serif-kaisei);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text-primary);
  border: 1px solid var(--color-text-primary);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.footer-brand p {
  font-family: var(--font-serif-jp);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-family: var(--font-sans-en);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
}

.footer-meta .meta-item {
  margin-top: 4px;
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  display: none;
}

/* --- Animations & Interaction Effects --- */

/* Scroll-triggered reveal animation classes */
.reveal {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Responsive Styles */

@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 1fr; /* Sidebar collapses to drawer */
  }
  
  .left-nav {
    display: none; /* Hide desktop sidebar navigation */
  }
  
  /* Make header elements adjust */
  .site-header {
    padding: 0 24px;
  }
  
  .top-nav {
    display: none; /* Mobile navigation takes over */
  }
  
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 105;
  }
  
  .toggle-bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all 0.3s ease;
  }
  
  /* Mobile Hamburger Animation when active */
  body.mobile-nav-active .toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  body.mobile-nav-active .toggle-bar:nth-child(2) {
    opacity: 0;
  }
  
  body.mobile-nav-active .toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  /* Hamburger menu item display */
  .menu-toggle {
    display: flex;
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
  }
  
  /* Mobile Menu Overlay Drawer */
  .mobile-nav-overlay {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(250, 248, 246, 0.98);
    z-index: 95;
    justify-content: center;
    align-items: flex-start; /* Start from top to allow scrolling on small height devices */
    overflow-y: auto; /* Enable scroll if height overflows */
    padding: 100px 24px 60px;
    transform: translateX(100%);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }
  
  body.mobile-nav-active .mobile-nav-overlay {
    transform: translateX(0);
  }
  
  .mobile-menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 80%;
    max-width: 320px;
  }
  
  .mobile-link {
    font-family: var(--font-sans-en);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
  }
  
  .mobile-cta-stores,
  .mobile-cta-line {
    width: 100%;
    text-align: center;
    padding: 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 700;
    margin-top: 10px;
  }
  
  .mobile-cta-stores {
    border: 1px solid var(--color-accent-sage);
    color: var(--color-accent-sage);
  }
  
  .mobile-cta-line {
    background-color: #06C755;
    color: #fff;
    box-shadow: 0 4px 10px rgba(6, 199, 85, 0.2);
  }
  
  .section-padding {
    padding: 80px 24px;
  }
  
  .hero-section {
    height: auto;
    min-height: calc(100vh - var(--header-height));
    padding: 80px 24px 60px;
    display: flex;
    align-items: center;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .concept-grid,
  .instructor-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .lessons-grid,
  .pricing-cards {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .price-card.featured {
    transform: scale(1);
  }
  
  .price-card.featured:hover {
    transform: translateY(-6px);
  }
  
  .instructor-image-container {
    max-width: 320px;
    margin: 0 auto;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }
  
  .footer-meta {
    align-items: center;
  }
  
  /* Hero CTA layout for mobile stacking */
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  
  .hero-ctas .btn {
    width: 100%;
  }

  /* Prevent concept card left-overflow on small screens */
  .concept-floating-card {
    left: 10px;
    bottom: -15px;
    padding: 12px 18px;
  }

  /* Optimize contact form padding to maximize input space */
  .contact-form-block {
    padding: 24px;
  }

  /* Compact schedule table padding for readability */
  .schedule-table-wrapper {
    padding: 16px 12px;
  }
}

/* Specific optimizations for extremely narrow mobile viewports (e.g., iPhone SE/mini) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 26px !important;
  }
  
  .hero-title span {
    font-size: 16px;
    display: block;
    margin-left: 0;
    margin-top: 6px;
  }
  
  .section-padding {
    padding: 60px 16px;
  }
  
  .concept-floating-card {
    left: 4px;
    bottom: -10px;
    padding: 8px 12px;
  }
  
  .card-text {
    font-size: 10px;
  }

  .site-header {
    height: 60px;
    padding: 0 16px;
  }

  .logo-container .brand-title {
    font-size: 14px;
  }

  .logo-container .brand-jiku {
    font-size: 20px;
  }
  
  .menu-toggle {
    right: 16px;
  }
}