@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
  /* Premium Light Theme Colors */
  --bg-color: #FAFAFA;
  --bg-color-alt: #F0F2F5;
  --text-primary: #1A1A1A;
  --text-secondary: #4A4A4A;
  
  /* Accents - Elegant Navy and Gold */
  --accent-color: #122345; /* Deep Navy */
  --accent-light: #2A4372;
  --accent-blue: #1D4ED8; /* Classic Elegant Blue */
  --accent-blue-hover: #2563EB;
  
  --border-color: rgba(0, 0, 0, 0.08);
  --card-bg: #FFFFFF;
  
  /* Typography */
  --font-heading: 'Cormorant Garamond', serif;
  --font-body: 'Noto Sans JP', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Shadows */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px -5px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-blue);
  color: #fff;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--accent-color);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  text-align: center;
  position: relative;
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-lg);
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--accent-blue);
}

h2.news-title::after {
  display: none;
}

.next-concert-title {
  font-size: 1.8rem;
}

@media (max-width: 900px) {
  .next-concert-title {
    font-size: 1.2rem;
    white-space: nowrap;
  }
}

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-weight: 300;
  letter-spacing: 0.02em;
}

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

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

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

/* Navigation - Glassmorphism */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: var(--space-md) 0;
  background: rgba(250, 250, 250, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  transition: all var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  padding: var(--space-sm) 0;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent-color);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
  text-decoration: none;
}

.nav-brand span {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  text-transform: uppercase;
  color: var(--accent-blue);
}

.logo-main {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent-color) !important;
  line-height: 1.0;
}

.logo-sub {
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: var(--accent-blue) !important;
  line-height: 1.3;
}

.logo-sub:last-child {
  letter-spacing: 0.52em;
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  position: relative;
  font-weight: 500;
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -6px;
  left: 0;
  background-color: var(--accent-blue);
  transition: width var(--transition-fast);
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

.fb-icon-link {
  display: flex;
  align-items: center;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.fb-icon-link::after {
  display: none !important;
}

.fb-icon-link:hover {
  opacity: 1;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--accent-color);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1001;
}

/* Hero Section */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px; /* offset for fixed nav */
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../assets/main-header.avif') center/cover;
  z-index: 1;
  transform: scale(1.05);
  animation: slowPan 30s linear infinite alternate;
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5); /* Darker overlay for better text readability */
  z-index: 2;
}

@keyframes slowPan {
  from { transform: scale(1.05) translate(0, 0); }
  to { transform: scale(1.1) translate(-1%, -1%); }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 800px;
  width: 100%;
  text-align: center;
  margin: 0 auto;
  padding: 0 1rem;
}

.hero-content h1 {
  color: #ffffff;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.7), 0 2px 5px rgba(0, 0, 0, 0.5);
}

@media (min-width: 901px) {
  .hero-content h1 {
    white-space: nowrap;
  }
}

.hero-subtitle {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: #E5A93C; /* Elegant Gold */
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: block;
}

.hero-content p {
  font-size: 1.15rem;
  max-width: 600px;
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.95);
  font-weight: 400;
  line-height: 1.8;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  background: transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
  z-index: -1;
}

.btn:hover {
  color: #fff;
}

.btn:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

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

.btn-primary::before {
  background: var(--accent-gold);
}

.btn-primary:hover {
  color: #fff;
  border-color: var(--accent-gold);
}

/* Cards & Components */
.card {
  background: var(--card-bg);
  padding: var(--space-lg);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  height: 100%;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.image-wrapper {
  overflow: hidden;
  border-radius: 8px;
  position: relative;
  box-shadow: var(--shadow-md);
}

.image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.image-wrapper:hover img {
  transform: scale(1.05);
}

/* Footer */
.footer {
  background: var(--accent-color);
  color: #fff;
  padding: var(--space-xl) 0 var(--space-md);
}

.footer h3, .footer h4 {
  color: #fff;
}

.footer p {
  color: rgba(255, 255, 255, 0.7);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-brand p {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-top: var(--space-sm);
  color: var(--accent-gold);
}

.footer-links ul {
  list-style: none;
  margin-top: var(--space-md);
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--accent-gold);
  padding-left: 5px;
}

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

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Responsive Design */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right var(--transition-fast) cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-links li {
    margin: var(--space-md) 0;
  }
  
  .nav-links a {
    font-size: 1.2rem;
    color: var(--accent-color);
  }

  .mobile-menu-btn {
    display: block;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .hero-content {
    padding: 2rem 1.5rem;
  }

  h1 { font-size: 3rem; }
  h2 { font-size: 2.5rem; }
}

/* ライトボックス */
#lightbox-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}
#lightbox-overlay.active {
  display: flex;
}
#lightbox-img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: 4px;
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
}
#lightbox-close {
  position: fixed;
  top: 20px; right: 30px;
  font-size: 2.5rem;
  color: white;
  cursor: pointer;
}