/* Base Styles & Variables */
:root {
  --bg-dark: #05080f; /* very dark blue/black */
  --bg-navy: #0a0f1a;
  --text-main: #f0f2f5;
  --text-muted: #a0a5b0;
  --neon-pink: #ff6b9e;
  --neon-blue: #4db8ff;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --font-en: 'Inter', sans-serif;
  --font-ja: 'Noto Sans JP', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ja);
  background-color: transparent;
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-ja);
  font-weight: 500;
  line-height: 1.3;
}

.hero-title, .section-title, .logo, .nav ul li a, .system-card h3 {
  font-family: var(--font-en);
}

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

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: var(--text-main);
  position: relative;
  display: inline-block;
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

/* Glassmorphism Utility */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s ease;
}

.header.scrolled {
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 15px 0;
  border-bottom: 1px solid var(--glass-border);
}

.header-container {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.logo a {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: linear-gradient(to right, var(--text-main), var(--neon-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(77, 184, 255, 0.3);
}

.nav ul {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav ul li a {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}

.nav ul li a:hover {
  opacity: 1;
  color: var(--neon-blue);
  text-shadow: 0 0 10px rgba(77, 184, 255, 0.5);
}

.nav-ig {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 20px;
}

.nav-ig:hover {
  border-color: var(--neon-pink);
  color: var(--neon-pink) !important;
  text-shadow: 0 0 10px rgba(255, 107, 158, 0.5) !important;
}

.mobile-ig {
  display: none;
  color: var(--text-main);
  margin-right: 20px;
  z-index: 1001;
  position: relative;
  transition: all 0.3s ease;
}

.mobile-ig:hover {
  color: var(--neon-pink);
  filter: drop-shadow(0 0 10px rgba(255, 107, 158, 0.5));
}

.hamburger {
  display: none;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px 0;
  transition: all 0.3s ease;
}

.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);
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(5, 8, 15, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu ul {
  text-align: center;
}

.mobile-menu ul li {
  margin: 20px 0;
}

.mobile-menu ul li a {
  font-family: var(--font-en);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  background-color: var(--bg-dark);
}

.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at center, transparent 0%, var(--bg-dark) 100%);
  z-index: -1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 0 20px;
}

.hero-title {
  font-size: 7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 5px;
  color: #fff;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.8),
               0 0 30px var(--neon-blue),
               0 0 60px var(--neon-blue),
               0 0 100px var(--neon-blue);
  animation: pulseNeon 3s infinite alternate;
}

@keyframes pulseNeon {
  0% { text-shadow: 0 0 10px rgba(255, 255, 255, 0.6), 0 0 20px rgba(77, 184, 255, 0.8), 0 0 40px rgba(77, 184, 255, 0.6); }
  100% { text-shadow: 0 0 15px rgba(255, 255, 255, 1), 0 0 40px var(--neon-blue), 0 0 80px var(--neon-blue), 0 0 120px var(--neon-blue); }
}

.hero-subtitle {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--neon-pink);
  margin-bottom: 60px;
  text-shadow: 0 0 15px rgba(255, 107, 158, 0.8);
}

.hero-catch-wrap {
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  padding: 40px 60px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: inline-block;
  width: 95%;
  max-width: 800px;
}

.hero-catch {
  font-size: 0.95rem;
  line-height: 2;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: #fff;
}



.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.scroll-indicator .line {
  width: 1px;
  height: 50px;
  background: var(--text-muted);
  margin-top: 10px;
  position: relative;
  overflow: hidden;
}

.scroll-indicator .line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--neon-blue);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

/* Concept Section */
.concept-content {
  display: flex;
  align-items: center;
  gap: 60px;
}

.concept-image-wrap {
  flex: 1;
  padding: 10px;
}

.placeholder-img {
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.placeholder-img::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.05), transparent);
  transform: skewX(-20deg);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  100% { left: 200%; }
}

.concept-slideshow {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: 8px;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.05);
}

.concept-slideshow img.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.concept-slideshow img.slide.active {
  opacity: 1;
}

.concept-text {
  flex: 1;
}

.concept-text h3 {
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 30px;
  line-height: 1.5;
}

.concept-text p {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 1rem;
}

/* Gallery Section */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  aspect-ratio: 1;
  padding: 10px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(77, 184, 255, 0.15);
  border-color: rgba(77, 184, 255, 0.3);
}

/* System Section */
.system-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 30px;
}

.system-card {
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.3s ease;
}

.system-card:hover {
  transform: translateY(-5px);
}

.neon-border-blue:hover {
  border-color: var(--neon-blue);
  box-shadow: 0 0 20px rgba(77, 184, 255, 0.2);
}

.neon-border-pink {
  border-color: rgba(255, 107, 158, 0.3);
}

.neon-border-pink:hover {
  border-color: var(--neon-pink);
  box-shadow: 0 0 20px rgba(255, 107, 158, 0.2);
}

.system-card.highlight {
  position: relative;
  overflow: hidden;
}

.system-card.highlight::before {
  content: 'RECOMMEND';
  position: absolute;
  top: 15px;
  right: -30px;
  background: var(--neon-pink);
  color: #fff;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 5px 30px;
  transform: rotate(45deg);
  box-shadow: 0 0 10px rgba(255, 107, 158, 0.5);
}

.card-header {
  margin-bottom: 20px;
}

.card-header h3 {
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  margin-bottom: 5px;
}

.card-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-price {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.card-price .currency {
  font-size: 1.5rem;
  vertical-align: top;
}

.card-price .amount {
  font-size: 2.5rem;
  font-weight: 600;
  font-family: var(--font-en);
}

.card-price .period {
  color: var(--text-muted);
}

.card-features {
  text-align: left;
}

.card-features li {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  position: relative;
  padding-left: 20px;
}

.card-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--neon-blue);
}

.neon-border-pink .card-features li::before {
  color: var(--neon-pink);
}

.system-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Access Section */
.access-content {
  display: flex;
  overflow: hidden;
}

.access-info {
  flex: 1;
  padding: 50px;
}

.shop-name {
  font-family: var(--font-en);
  font-size: 1.8rem;
  letter-spacing: 0.05em;
  margin-bottom: 30px;
  color: var(--text-main);
}

.info-list {
  margin-bottom: 40px;
}

.info-list dt {
  color: var(--neon-blue);
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.info-list dd {
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 1.8;
}

.info-list a {
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.3);
  text-underline-offset: 4px;
}

.info-list a:hover {
  color: var(--neon-blue);
  text-decoration-color: var(--neon-blue);
}

.small-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-top: 5px;
}

.btn-instagram {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-instagram:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(220, 39, 67, 0.4);
}

.access-map {
  flex: 1;
  min-height: 400px;
}

.access-map iframe {
  width: 100% !important;
  height: 100% !important;
  display: block;
  border: none;
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  opacity: 0.5;
}

.copyright {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-title { font-size: 5rem; }
  .concept-content { flex-direction: column; gap: 40px; }
  .concept-image-wrap, .concept-text { width: 100%; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .system-cards { grid-template-columns: repeat(2, 1fr); }
  .access-content { flex-direction: column; }
  .access-map { flex: none; height: 350px; min-height: 350px; width: 100%; display: block; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .hamburger { display: block; }
  .mobile-ig { display: block; }
  
  .hero-title { font-size: 3.5rem; }
  .hero-subtitle { font-size: 0.8rem; margin-bottom: 40px; letter-spacing: 0.4em; }
  .hero-catch-wrap { padding: 20px 10px; width: 100%; max-width: 100%; }
  .hero-catch { font-size: 0.75rem; line-height: 1.8; }
  
  .section { padding: 60px 0; }
  .section-title { font-size: 1.8rem; }
  .section-header { margin-bottom: 40px; }
  
  .concept-text h3 { font-size: 1.5rem; }
  
  .gallery-grid { grid-template-columns: 1fr; gap: 15px; }
  
  .system-cards { grid-template-columns: 1fr; gap: 20px; }
  .system-card { padding: 30px 20px; }
  .system-card.highlight::before { right: -35px; }
  
  .access-info { padding: 30px 20px; }
  .shop-name { font-size: 1.5rem; }
  .access-map { flex: none; height: 300px; min-height: 300px; width: 100%; display: block; }
  
  .mobile-menu ul li a { font-size: 1.2rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 0.7rem; margin-bottom: 30px; }
  .card-price .amount { font-size: 2rem; }
}