/* ========================================
   1. CSS Custom Properties
   ======================================== */
:root {
  --color-bg: #f5ffa1;
  --color-bg-light: #faffd6;
  --color-accent: #72e2db;
  --color-accent-dark: #4fc9c2;
  --color-accent-light: #b5f0ec;
  --color-text: #3a3a3a;
  --color-text-light: #6b6b6b;
  --color-heading: #2d2d2d;
  --color-white: #ffffff;
  --color-gold: #c9a84c;
  --color-gold-light: #f0e6c8;
  --color-line-green: #06c755;
  --color-overlay: rgba(0, 0, 0, 0.4);

  --font-heading: "Noto Serif JP", serif;
  --font-body: "Noto Sans JP", sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3.5rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --max-width: 1100px;
  --max-width-narrow: 800px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

/* ========================================
   3. Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); margin-bottom: var(--space-lg); }
h3 { font-size: var(--font-size-lg); margin-bottom: var(--space-md); }

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

/* ========================================
   4. Utilities
   ======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

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

.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background-color: var(--color-bg-light);
}

.section--white {
  background-color: var(--color-white);
}

.section__heading {
  text-align: center;
  margin-bottom: var(--space-2xl);
  position: relative;
}

.section__heading::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--space-sm) auto 0;
  border-radius: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================
   5. Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
}

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

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

.btn-line {
  background-color: var(--color-line-green);
  color: var(--color-white);
  font-size: var(--font-size-md);
  padding: 1rem 2.5rem;
}

.btn-line:hover {
  background-color: #05b04a;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-heading);
}

.btn-white:hover {
  background-color: var(--color-bg-light);
  color: var(--color-heading);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ========================================
   6. Header & Navigation
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--color-heading);
}

.logo:hover {
  color: var(--color-heading);
}

.logo-main {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.logo-sub {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-heading);
  transition: all var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--color-white);
  padding: 80px var(--space-xl) var(--space-xl);
  transition: right var(--transition);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
  z-index: 1000;
}

.main-nav.open {
  right: 0;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.main-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
}

.nav-cta a {
  background-color: var(--color-line-green);
  color: var(--color-white) !important;
  text-align: center;
  margin-top: var(--space-sm);
}

.nav-cta a:hover {
  background-color: #05b04a;
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 999;
}

.nav-overlay.active {
  display: block;
}

/* ========================================
   7. Hero Sections
   ======================================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.5) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  color: var(--color-white);
  padding: 0 var(--space-md);
}

.hero__title {
  font-size: var(--font-size-2xl);
  color: var(--color-white);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-xs);
  animation: fadeInUp 1s ease forwards;
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  letter-spacing: 0.3em;
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeInUp 1s ease 0.3s forwards;
}

.hero__tagline {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: fadeInUp 1s ease 0.6s forwards;
}

.hero__scroll {
  opacity: 0;
  animation: fadeInUp 1s ease 0.9s forwards;
}

.hero__scroll a {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  transition: transform var(--transition);
  display: inline-block;
}

.hero__scroll a:hover {
  color: var(--color-white);
  transform: translateY(5px);
}

/* Page hero (inner pages) */
.hero--page {
  height: 40vh;
  min-height: 280px;
}

.hero--page .hero__title {
  font-size: var(--font-size-xl);
  letter-spacing: 0.1em;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   8. Cards
   ======================================== */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow);
  border-top: 3px solid var(--color-accent);
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card__icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
}

.card__link {
  font-weight: 500;
  color: var(--color-accent-dark);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.card__link:hover {
  gap: var(--space-sm);
}

/* Pricing cards */
.pricing-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.pricing-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.pricing-card__header {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
}

.pricing-card--featured .pricing-card__header {
  background-color: var(--color-gold);
  position: relative;
}

.pricing-card__badge {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.25);
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  margin-bottom: var(--space-sm);
}

.pricing-card__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.pricing-card__price {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.pricing-card__price small {
  font-size: var(--font-size-sm);
  font-weight: 400;
}

.pricing-card__body {
  padding: var(--space-xl);
}

.pricing-card__desc {
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
}

.pricing-card__list {
  margin-bottom: var(--space-xl);
}

.pricing-card__list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}

.pricing-card__list li:last-child {
  border-bottom: none;
}

.pricing-card__list li i {
  color: var(--color-accent);
  margin-top: 0.3rem;
  flex-shrink: 0;
}

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

/* Individual session cards */
.session-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.session-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.session-card__icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.session-card__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  margin-bottom: var(--space-xs);
}

.session-card__price {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-accent-dark);
}

/* ========================================
   9. Split Layout (Image + Text)
   ======================================== */
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.split__image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.split__image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  object-position: center;
}

.split__text .badge {
  display: inline-block;
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  padding: 0.3rem 1rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

/* ========================================
   10. Timeline / Steps
   ======================================== */
.steps {
  position: relative;
  padding-left: 40px;
}

.steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-accent-light);
}

.step {
  position: relative;
  margin-bottom: var(--space-xl);
}

.step:last-child {
  margin-bottom: 0;
}

.step__number {
  position: absolute;
  left: -40px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  z-index: 1;
}

.step__content {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
}

.step__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.step__title i {
  color: var(--color-accent);
}

/* ========================================
   11. Highlights / Callouts
   ======================================== */
.highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.highlight {
  background-color: var(--color-white);
  border-left: 4px solid var(--color-gold);
  padding: var(--space-lg);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  box-shadow: var(--shadow);
}

.highlight p {
  font-size: var(--font-size-md);
  color: var(--color-heading);
  font-weight: 500;
}

/* Facility info */
.facility-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  justify-content: center;
}

.facility-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-md);
}

.facility-item i {
  font-size: var(--font-size-lg);
  color: var(--color-accent-dark);
}

/* ========================================
   11b. Service Menu
   ======================================== */
.service-menu {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.service-menu__item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--space-lg) var(--space-xl);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-accent);
  transition: all var(--transition);
}

.service-menu__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
}

.service-menu--advanced .service-menu__item {
  border-left-color: var(--color-gold);
}

.service-menu__icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
  width: 40px;
  text-align: center;
}

.service-menu__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

.service-menu__detail {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: 0;
}

.service-menu__detail small {
  color: var(--color-gold);
  font-weight: 500;
}

.service-menu__note {
  text-align: center;
  margin-top: var(--space-xl);
  color: #c0392b;
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.badge--accent {
  display: inline-block;
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  padding: 0.3rem 1.2rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.badge--gold {
  display: inline-block;
  background-color: var(--color-gold-light);
  color: var(--color-gold);
  padding: 0.3rem 1.2rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

@media (min-width: 576px) {
  .service-menu {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   12. Footer
   ======================================== */
.line-cta {
  background-color: var(--color-accent);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.line-cta h2 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.line-cta p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-lg);
}

.footer-bottom {
  background-color: #3a3a3a;
  padding: var(--space-xl) 0;
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

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

.copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-xs);
}

/* ========================================
   13. Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================
   14. Responsive
   ======================================== */
@media (min-width: 576px) {
  .session-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .highlights {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .header-inner {
    height: 70px;
  }

  .hamburger {
    display: none;
  }

  .main-nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    padding: 0;
    box-shadow: none;
    overflow: visible;
  }

  .main-nav ul {
    flex-direction: row;
    align-items: center;
    gap: 0;
  }

  .main-nav a {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
  }

  .nav-cta a {
    margin-top: 0;
    padding: var(--space-sm) var(--space-md);
  }

  .nav-overlay {
    display: none !important;
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-xl); }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-lg);
  }

  .hero--page .hero__title {
    font-size: var(--font-size-2xl);
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .split--reverse {
    direction: rtl;
  }

  .split--reverse > * {
    direction: ltr;
  }

  .split__image img {
    height: 350px;
  }

  .pricing-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--space-4xl) 0;
  }
}

@media (min-width: 1024px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .split__image img {
    height: 400px;
  }

  .highlights {
    grid-template-columns: repeat(3, 1fr);
  }
}