/* ==========================================================================
   Mistic Media Portal - Modern & Elegant Light Theme
   Crafted with precision for Yuichi Tanabe & Jenny Tanabe
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens & CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Clean, Light & Refined Gallery Aesthetics */
  --color-bg: #fafaf9;
  --color-bg-alt: #f5f5f4;
  --color-surface: #ffffff;
  --color-surface-glass: rgba(255, 255, 255, 0.88);
  
  --color-text-primary: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-tertiary: #a8a29e;
  
  /* Artistic & Innovation Accents: Warm Champagne Gold & Sculptural Bronze */
  --color-gold: #c59b27;
  --color-gold-dark: #9a7618;
  --color-gold-light: #fef9ed;
  --color-gold-border: rgba(197, 155, 39, 0.3);
  --color-gold-glow: rgba(197, 155, 39, 0.18);
  
  --color-cyan: #0284c7;
  --color-border: #e7e5e4;
  --color-border-hover: #d6d3d1;

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, 'Sawarabi Mincho', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
  
  /* Spacing */
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-subtle: 0 2px 10px rgba(28, 25, 23, 0.03);
  --shadow-card: 0 10px 30px -5px rgba(28, 25, 23, 0.05), 0 4px 12px rgba(28, 25, 23, 0.02);
  --shadow-frame: 0 20px 50px -10px rgba(28, 25, 23, 0.08), 0 10px 25px -5px rgba(28, 25, 23, 0.04);
  --shadow-hover: 0 25px 45px -10px rgba(197, 155, 39, 0.2), 0 10px 20px -5px rgba(28, 25, 23, 0.04);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* Ambient canvas background effect */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 12% 15%, rgba(197, 155, 39, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 88% 85%, rgba(2, 132, 199, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(250, 250, 249, 1) 0%, transparent 100%);
  pointer-events: none;
  z-index: -1;
}

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

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

/* --------------------------------------------------------------------------
   Layout Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-gold) 0%, #eab308 100%);
  color: #ffffff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 4px 14px var(--color-gold-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  font-weight: 600;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 0.4rem 0;
}

.nav-link:hover {
  color: var(--color-gold-dark);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  transition: var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

/* Language switch button */
.lang-toggle-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-fast);
}

.lang-toggle-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
  background: var(--color-gold-light);
}

.nav-cta {
  background: var(--color-text-primary);
  color: #ffffff !important;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-cta:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--color-gold-glow);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 5rem 0 3.5rem;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-gold-light);
  border: 1px solid var(--color-gold-border);
  color: var(--color-gold-dark);
  padding: 0.4rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-subtle);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5.2vw, 4.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  max-width: 950px;
  margin: 0 auto 1.5rem;
}

.hero-title span {
  font-style: italic;
  color: var(--color-gold);
  background: linear-gradient(135deg, var(--color-gold) 0%, #b45309 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 720px;
  margin: 0 auto 3rem;
  font-weight: 400;
  line-height: 1.7;
}

/* Hero Centerpiece Artwork Visual */
.hero-artwork-frame {
  max-width: 1080px;
  margin: 0 auto;
  background: var(--color-surface);
  padding: 0.85rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-frame);
  position: relative;
  overflow: hidden;
}

.hero-artwork-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: calc(var(--radius-xl) - 6px);
  display: block;
}

.hero-artwork-caption {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
}

/* --------------------------------------------------------------------------
   Hub Section & Cards Grid
   -------------------------------------------------------------------------- */
.hub-section {
  padding: 5rem 0 6rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.75rem;
}

.section-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold-dark);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0.75rem auto 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2.25rem;
}

.portal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.portal-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-gold-border);
  box-shadow: var(--shadow-hover);
}

.card-media {
  position: relative;
  height: 230px;
  background: var(--color-bg-alt);
  overflow: hidden;
  display: block;
  cursor: pointer;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portal-card:hover .card-media img,
.card-media:hover img {
  transform: scale(1.06);
}

.card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.35rem 0.9rem;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  pointer-events: none;
}

.card-body {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold-dark);
  margin-bottom: 0.5rem;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.85rem;
  line-height: 1.25;
}

.card-title a {
  color: inherit;
  transition: var(--transition-fast);
}

.card-title a:hover {
  color: var(--color-gold-dark);
}

.card-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.card-link-text {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.card-link-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-text-primary);
  transition: var(--transition-fast);
}

.portal-card:hover .card-link-text {
  color: var(--color-gold-dark);
}

.portal-card:hover .card-link-arrow {
  background: var(--color-gold);
  color: #ffffff;
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   About Section (Story & Creator Profile)
   -------------------------------------------------------------------------- */
.about-section {
  padding: 6.5rem 0;
  background: linear-gradient(180deg, transparent 0%, rgba(245, 245, 244, 0.7) 100%);
  border-top: 1px solid var(--color-border);
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 4.5rem;
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-frame {
  position: relative;
  background: var(--color-surface);
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-frame);
  border: 1px solid var(--color-border);
}

.about-frame img {
  border-radius: calc(var(--radius-lg) - 8px);
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.about-accent-badge {
  position: absolute;
  bottom: -1.25rem;
  right: -1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.25rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.about-accent-badge .badge-icon {
  width: 46px;
  height: 46px;
  background: var(--color-gold-light);
  color: var(--color-gold-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.badge-text-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-primary);
}

.badge-text-sub {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.about-content {
  display: flex;
  flex-direction: column;
}

.about-subtitle {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold-dark);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.about-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3.6vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
}

.about-lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.about-body {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.85;
}

.about-body p + p {
  margin-top: 1.25rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2.25rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--color-border);
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.highlight-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-primary);
}

.highlight-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4.5rem 0 2.5rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand {
  max-width: 420px;
}

.footer-desc {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  margin-top: 1rem;
  line-height: 1.7;
}

.footer-nav {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
}

.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.footer-link:hover {
  color: var(--color-gold-dark);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .about-visual {
    max-width: 520px;
    margin: 0 auto;
  }
  
  .hero-section {
    padding: 4rem 0 3rem;
  }
}

@media (max-width: 768px) {
  .site-header .container {
    height: 72px;
  }
  
  .nav-links {
    display: none;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .about-highlights {
    grid-template-columns: 1fr;
  }
  
  .footer-top {
    flex-direction: column;
  }
  
  .hero-artwork-caption {
    position: static;
    margin-top: 0.75rem;
    display: inline-block;
  }
}