/* Liquid Glass Design System - Inspired by Jony Ive's Apple Aesthetic */
/* Ultra-modern glassmorphism with fluid animations and premium feel */

:root {
  /* Glass System Colors */
  --glass-white: rgba(255, 255, 255, 0.7);
  --glass-white-strong: rgba(255, 255, 255, 0.8);
  --glass-white-ultra: rgba(255, 255, 255, 0.9);
  --glass-black: rgba(0, 0, 0, 0.08);
  --glass-black-strong: rgba(0, 0, 0, 0.12);
  
  /* Bitcoin Orange Glass */
  --glass-orange: rgba(251, 125, 33, 0.08);
  --glass-orange-strong: rgba(251, 125, 33, 0.15);
  --glass-orange-vibrant: rgba(251, 125, 33, 0.25);
  
  /* System Surfaces */
  --surface-primary: rgba(255, 255, 255, 0.9);
  --surface-secondary: rgba(255, 255, 255, 0.7);
  --surface-elevated: rgba(255, 255, 255, 0.95);
  
  /* Typography */
  --text-primary: #2c3e50;
  --text-secondary: #495057;
  --text-tertiary: #6c757d;
  --text-accent: #ff6600;
  
  /* Shadows & Depth */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 10px rgba(0, 0, 0, 0.04);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
  
  /* Blur Levels */
  --blur-sm: blur(4px);
  --blur-md: blur(8px);
  --blur-lg: blur(16px);
  --blur-xl: blur(24px);
  --blur-ultra: blur(40px);
  
  /* Border Radius System */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-ultra: 48px;
  --radius-full: 9999px;
  
  /* Animation Timing */
  --duration-fast: 0.15s;
  --duration-normal: 0.3s;
  --duration-slow: 0.45s;
  --duration-ultra: 0.6s;
  
  /* Easing Functions - Apple-style */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
  --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', system-ui, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, 
    #ffffff 0%, 
    #fafafa 25%, 
    #f8f9fa 50%, 
    #fafafa 75%, 
    #ffffff 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  font-feature-settings: "kern" 1, "liga" 1;
  position: relative;
}

/* Background Gradient Animation */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(251, 125, 33, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(251, 125, 33, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes backgroundShift {
  0%, 100% { opacity: 1; transform: scale(1) rotate(0deg); }
  50% { opacity: 0.8; transform: scale(1.05) rotate(1deg); }
}

/* Glass Container System */
.glass-container {
  background: var(--surface-primary);
  backdrop-filter: var(--blur-lg);
  -webkit-backdrop-filter: var(--blur-lg);
  border: 1px solid var(--glass-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.glass-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-white-strong), transparent);
  opacity: 0.8;
}

.glass-elevated {
  background: var(--surface-elevated);
  backdrop-filter: var(--blur-xl);
  -webkit-backdrop-filter: var(--blur-xl);
  border: 1px solid var(--glass-white-strong);
  box-shadow: var(--shadow-xl);
}

.glass-subtle {
  background: var(--surface-secondary);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-white);
  box-shadow: var(--shadow-sm);
}

/* Navigation - Ultra Premium Glass */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  border: none;
  background: none;
}

.nav-glass {
  background: var(--surface-elevated);
  backdrop-filter: var(--blur-ultra);
  -webkit-backdrop-filter: var(--blur-ultra);
  border-bottom: 1px solid var(--glass-white);
  padding: 16px 0;
  position: relative;
  overflow: hidden;
}

.nav-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(180deg, 
    var(--glass-white-ultra) 0%, 
    var(--glass-white) 50%, 
    transparent 100%);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.nav-logo:hover {
  color: var(--text-accent);
  transform: translateY(-1px);
}

.nav-logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out-quart);
}

.nav-logo:hover img {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(251, 125, 33, 0.3);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: all var(--duration-normal) var(--ease-out-quart);
  position: relative;
  padding: 8px 16px;
  border-radius: var(--radius-full);
}

.nav-links a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--glass-orange);
  border-radius: var(--radius-full);
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.nav-links a:hover {
  color: var(--text-primary);
  transform: translateY(-1px);
}

.nav-links a:hover::before {
  opacity: 1;
  transform: scale(1);
}

/* Main Content Container */
.current-site {
  padding-top: 100px;
  position: relative;
  min-height: 100vh;
}

/* Hero Section - Liquid Glass */
.hero-section {
  padding: 80px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

.hero-glass {
  background: var(--surface-primary);
  backdrop-filter: var(--blur-lg);
  -webkit-backdrop-filter: var(--blur-lg);
  border: 1px solid var(--glass-white);
  border-radius: var(--radius-xl);
  padding: 60px;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  margin-bottom: 40px;
}

.hero-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    var(--glass-orange) 0%, 
    transparent 30%, 
    transparent 70%, 
    var(--glass-white) 100%);
  opacity: 0.3;
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text h1 {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary), var(--text-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 20px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  transition: all var(--duration-slow) var(--ease-out-quart);
}

.hero-image:hover img {
  transform: scale(1.02) rotateY(5deg);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

/* CTA Buttons - Liquid Glass */
.cta-group {
  display: flex;
  gap: 16px;
  align-items: center;
}

.btn-glass {
  background: var(--glass-orange-strong);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-orange-vibrant);
  color: var(--text-primary);
  padding: 16px 32px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  transition: all var(--duration-normal) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--glass-white-strong), transparent);
  transition: left var(--duration-slow) var(--ease-out-quart);
}

.btn-glass:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(251, 125, 33, 0.3);
  border-color: var(--text-accent);
}

.btn-glass:hover::before {
  left: 100%;
}

.btn-glass-secondary {
  background: var(--surface-primary);
  border: 1px solid var(--glass-white);
  color: var(--text-secondary);
}

.btn-glass-secondary:hover {
  color: var(--text-primary);
  border-color: var(--glass-white-strong);
  box-shadow: var(--shadow-lg);
}

/* Section Containers */
.section-glass {
  margin: 80px 0;
  position: relative;
}

.section-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
}

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

.section-header h2 {
  font-size: clamp(36px, 5vw, 54px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--text-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Card System - Ultra Premium Glass */
.card-glass {
  background: var(--surface-primary);
  backdrop-filter: var(--blur-lg);
  -webkit-backdrop-filter: var(--blur-lg);
  border: 1px solid var(--glass-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  transition: all var(--duration-normal) var(--ease-out-quart);
  position: relative;
  overflow: hidden;
}

.card-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-white-strong), transparent);
}

.card-glass:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--glass-white-strong);
}

.card-glass:hover::before {
  background: linear-gradient(90deg, transparent, var(--glass-orange-strong), transparent);
}

/* Grid Systems */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* NFT Gallery - Premium Glass Cards */
.nft-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 40px;
}

.nft-card-glass {
  background: var(--surface-elevated);
  backdrop-filter: var(--blur-xl);
  -webkit-backdrop-filter: var(--blur-xl);
  border: 1px solid var(--glass-white-strong);
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-xl);
  transition: all var(--duration-slow) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.nft-card-glass:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  border-color: var(--glass-orange-strong);
}

.nft-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  transition: all var(--duration-slow) var(--ease-out-quart);
}

.nft-card-glass:hover .nft-image {
  transform: scale(1.05);
}

.nft-info {
  padding: 24px;
  background: var(--surface-primary);
  backdrop-filter: var(--blur-lg);
  -webkit-backdrop-filter: var(--blur-lg);
}

.nft-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.nft-price {
  font-size: 16px;
  color: var(--text-accent);
  font-weight: 600;
}

/* Loading States */
.loading-shimmer {
  background: linear-gradient(90deg, 
    var(--glass-white) 25%, 
    var(--glass-white-strong) 50%, 
    var(--glass-white) 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  
  .nav-links {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero-glass {
    padding: 40px 24px;
    margin: 0 16px 24px;
  }
  
  .section-container {
    padding: 0 16px;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .nft-gallery {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-glass {
    justify-content: center;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --glass-white: rgba(255, 255, 255, 0.2);
    --glass-white-strong: rgba(255, 255, 255, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
  }
}

/* Dark mode optimization (already dark but for system consistency) */
@media (prefers-color-scheme: dark) {
  /* Already optimized for dark mode */
}

/* Print styles */
@media print {
  .glass-container,
  .card-glass,
  .nft-card-glass {
    background: white !important;
    backdrop-filter: none !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
  
  .main-nav {
    display: none;
  }
}