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

:root {
  /* Color Palette */
  --gold: #D4AF37;
  --gold-light: #E8C968;
  --gold-dark: #B8941F;
  --ivory: #F5F5DC;
  --ivory-dark: #E8E8D0;
  --green: #7CAA77;
  --green-light: #9BC496;
  --green-dark: #5A8A55;
  --brown: #3E2723;
  --brown-light: #5D4037;
  --white: #FFFFFF;
  --gray: #666666;
  --gray-light: #CCCCCC;
  
  /* Typography */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--brown);
  background-color: var(--ivory);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   Section Headers
======================================== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-label {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--green);
  padding-bottom: 0.25rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: var(--spacing-sm);
}

/* ========================================
   Hero Section
======================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--ivory) 0%, var(--ivory-dark) 100%);
  overflow: hidden;
  padding: var(--spacing-lg) var(--spacing-md);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(124, 170, 119, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 800px;
  animation: fadeInUp 1s ease;
}

.hero-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--white);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--brown-light);
  margin-bottom: var(--spacing-md);
}

.venue-name {
  color: var(--green);
}

.hero-date-large {
  margin-bottom: var(--spacing-md);
}

.hero-date-main {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gold-dark);
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-date-main i {
  margin-right: 0.5rem;
}

.hero-time-main {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: var(--spacing-md);
}

/* Legacy support */
.hero-date {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gold-dark);
  margin-bottom: var(--spacing-xs);
}

.hero-time {
  font-size: 1.125rem;
  color: var(--gray);
  margin-bottom: var(--spacing-md);
}

.hero-image {
  position: absolute;
  top: 50%;
  right: 5%;
  transform: translateY(-50%);
  z-index: 2;
  width: 400px;
  height: 500px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  opacity: 0.15;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  animation: bounce 2s infinite;
}

.scroll-indicator i {
  font-size: 2rem;
  color: var(--green);
}

/* ========================================
   CTA Buttons
======================================== */
.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  color: var(--white);
  border: none;
}

.cta-primary:hover {
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
}

.cta-large {
  padding: 1.25rem 3rem;
  font-size: 1.25rem;
}

.cta-xlarge {
  padding: 1.5rem 4rem;
  font-size: 1.5rem;
}

.cta-center {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* ========================================
   Concept Section
======================================== */
.concept-section {
  padding: var(--spacing-xl) 0;
  background: var(--white);
}

.concept-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.concept-text {
  font-size: 1.125rem;
}

.concept-text p {
  margin-bottom: var(--spacing-md);
}

.lead-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--green-dark);
  line-height: 1.6;
}

.highlight-text {
  background: linear-gradient(transparent 60%, rgba(124, 170, 119, 0.3) 60%);
  padding: 0.5rem 0;
  font-weight: 500;
}

.special-reunion {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--green-dark);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(124, 170, 119, 0.1) 0%, rgba(212, 175, 55, 0.1) 100%);
  border-left: 4px solid var(--green);
  border-radius: 10px;
  margin: var(--spacing-md) 0;
  line-height: 1.8;
}

.special-reunion strong {
  color: var(--gold-dark);
  font-size: 1.35rem;
}

.closing-text {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gold-dark);
  text-align: center;
  margin-top: var(--spacing-md);
}

.concept-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.concept-image img {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
}

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

/* ========================================
   Info Section
======================================== */
.info-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(180deg, var(--ivory) 0%, var(--ivory-dark) 100%);
}

.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.info-card {
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.info-icon {
  font-size: 3rem;
  color: var(--green);
  margin-bottom: var(--spacing-md);
}

.info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: var(--spacing-sm);
}

.info-detail {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray);
}

.info-detail strong {
  display: block;
  font-size: 1.375rem;
  color: var(--gold-dark);
  margin-bottom: var(--spacing-xs);
}

.info-note {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-light);
  margin-top: var(--spacing-xs);
}

/* ========================================
   Program Section
======================================== */
.program-section {
  padding: var(--spacing-xl) 0;
  background: var(--white);
}

.program-intro {
  text-align: center;
  font-size: 1.125rem;
  color: var(--gray);
  margin-bottom: var(--spacing-lg);
}

.program-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  max-width: 900px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(245, 245, 220, 0.5) 0%, rgba(124, 170, 119, 0.1) 100%);
  border-radius: 20px;
  border: 2px solid var(--green-light);
  text-align: left;
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--green);
  flex-shrink: 0;
}

.feature-content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: var(--spacing-sm);
}

.feature-content p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray);
}

.program-list {
  max-width: 800px;
  margin: 0 auto;
}

.program-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  background: var(--ivory);
  border-radius: 15px;
  border-left: 4px solid var(--green);
  transition: all 0.3s ease;
}

.program-item:hover {
  background: var(--ivory-dark);
  transform: translateX(10px);
}

.program-icon {
  font-size: 1.5rem;
  color: var(--gold);
  flex-shrink: 0;
}

.program-content h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 0.25rem;
}

.program-content p {
  font-size: 1rem;
  color: var(--gray);
}

.program-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-light);
  margin-top: var(--spacing-lg);
  font-style: italic;
}

/* ========================================
   Artists Section
======================================== */
.artists-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(180deg, var(--ivory-dark) 0%, var(--ivory) 100%);
}

.artists-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.artist-card {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.artist-image {
  position: relative;
  overflow: hidden;
  height: 100%;
  min-height: 400px;
}

.artist-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.artist-info {
  padding: var(--spacing-lg);
}

.artist-instrument {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.artist-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: 0.25rem;
}

.artist-name-en {
  font-size: 1.125rem;
  color: var(--gray);
  margin-bottom: var(--spacing-md);
}

.artist-bio p {
  margin-bottom: var(--spacing-md);
  color: var(--gray);
  line-height: 1.8;
}

.artist-social {
  margin-top: var(--spacing-md);
}

.social-link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--gold);
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--gold-dark);
  transform: translateY(-3px);
}

/* ========================================
   Access Section
======================================== */
.access-section {
  padding: var(--spacing-xl) 0;
  background: var(--white);
}

.access-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
}

.access-info h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: var(--spacing-md);
}

.access-address {
  font-size: 1.125rem;
  color: var(--gray);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--ivory);
  border-radius: 10px;
  border-left: 4px solid var(--green);
}

.access-details {
  margin-bottom: var(--spacing-md);
}

.access-item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--ivory);
  border-radius: 10px;
}

.access-item i {
  font-size: 1.5rem;
  color: var(--green);
  flex-shrink: 0;
}

.access-item strong {
  display: block;
  color: var(--brown);
  margin-bottom: 0.25rem;
}

.access-item p {
  font-size: 0.875rem;
  color: var(--gray);
}

.access-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--green);
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-right: 1rem;
}

.access-button:hover {
  background: var(--green-dark);
  transform: translateY(-3px);
}

.access-button i {
  margin-right: 0.5rem;
}

.access-map {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.access-map iframe {
  width: 100%;
  height: 450px;
  border: none;
}

/* ========================================
   CTA Section
======================================== */
.cta-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 50%, var(--green) 100%);
  color: var(--white);
  text-align: center;
}

.cta-content h2 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
}

.cta-note {
  font-size: 1rem;
  margin-top: var(--spacing-md);
  opacity: 0.9;
}

/* ========================================
   Footer
======================================== */
.footer {
  background: var(--brown);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--gold-light);
}

.footer-section p {
  font-size: 1rem;
  line-height: 1.8;
}

.footer-section a {
  color: var(--ivory);
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--gold-light);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--brown-light);
  border-radius: 50px;
  transition: all 0.3s ease;
}

.footer-social-link:hover {
  background: var(--gold);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.875rem;
  opacity: 0.8;
}

/* ========================================
   Floating CTA
======================================== */
.floating-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.125rem;
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(100px);
}

.floating-cta.visible {
  opacity: 1;
  transform: translateY(0);
}

.floating-cta:hover {
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 100%);
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(212, 175, 55, 0.5);
}

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

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
  .hero-image {
    width: 300px;
    height: 400px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .concept-content {
    grid-template-columns: 1fr;
  }
  
  .artist-card {
    grid-template-columns: 1fr;
  }
  
  .artist-image {
    min-height: 300px;
  }
  
  .access-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .hero-section {
    min-height: auto;
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .hero-image {
    display: none;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.5rem;
  }
  
  .hero-date-main {
    font-size: 2rem;
  }
  
  .hero-time-main {
    font-size: 1.5rem;
  }
  
  .hero-date {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .info-cards {
    grid-template-columns: 1fr;
  }
  
  .program-feature {
    flex-direction: column;
    text-align: center;
  }
  
  .feature-icon {
    font-size: 2rem;
  }
  
  .feature-content h3 {
    font-size: 1.25rem;
  }
  
  .feature-content p {
    font-size: 1rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .floating-cta {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    text-align: center;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .cta-xlarge {
    padding: 1.25rem 2rem;
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .hero-date-main {
    font-size: 1.75rem;
  }
  
  .hero-time-main {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .cta-button {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .artist-name {
    font-size: 1.5rem;
  }
}