/* AdventCircle Website - Premium Design System */
/* Brand Colors: Primary Blue #1E88E5, Golden Orange #FF9800, Deep Blue #2C4E80, Radiant Gold #FFD54A */

:root {
  /* Brand Colors */
  --primary-blue: #1E88E5;
  --golden-orange: #FF9800;
  --deep-blue: #2C4E80;
  --radiant-gold: #FFD54A;
  --teal-aqua: #00BCD4;
  
  /* Dark Mode (Default) */
  --bg-dark: #0D1117;
  --bg-dark-secondary: #161B22;
  --bg-dark-tertiary: #1F2024;
  --text-primary: #F5F5F5;
  --text-secondary: #AAAAAA;
  --text-tertiary: #777777;
  
  /* Light Mode */
  --bg-light: #FFF8E7;
  --text-dark: #1F2024;
  --text-dark-secondary: #666666;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(255, 213, 74, 0.4);
  --shadow-glow-blue: 0 0 30px rgba(30, 136, 229, 0.4);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Animated Background */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-secondary) 50%, var(--bg-dark-tertiary) 100%);
  overflow: hidden;
}

.animated-bg::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30, 136, 229, 0.1) 0%, transparent 70%);
  top: -250px;
  left: -250px;
  animation: float 20s ease-in-out infinite;
}

.animated-bg::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 152, 0, 0.1) 0%, transparent 70%);
  bottom: -200px;
  right: -200px;
  animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

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

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--spacing-md) 0;
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

header.scrolled {
  box-shadow: var(--shadow-md);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: transform var(--transition-base);
}

.logo-container:hover {
  transform: scale(1.05);
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glow);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-blue), var(--golden-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
  padding: var(--spacing-xs) 0;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue), var(--golden-orange));
  transition: width var(--transition-base);
}

nav a:hover {
  color: var(--text-primary);
}

nav a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

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

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-lg);
  border-radius: var(--radius-xl);
  box-shadow: 0 0 60px rgba(255, 213, 74, 0.5), 0 0 120px rgba(30, 136, 229, 0.3);
  animation: pulse 3s ease-in-out infinite;
  border: 3px solid rgba(255, 255, 255, 0.1);
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 60px rgba(255, 213, 74, 0.5), 0 0 120px rgba(30, 136, 229, 0.3);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 80px rgba(255, 213, 74, 0.7), 0 0 140px rgba(30, 136, 229, 0.5);
  }
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-blue), var(--golden-orange), var(--teal-aqua));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero .tagline {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero .description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.8;
  animation: fadeInUp 1s ease-out 0.6s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
  color: white;
  box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-blue), 0 10px 40px rgba(30, 136, 229, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--golden-orange);
  border: 2px solid var(--golden-orange);
  box-shadow: 0 0 20px rgba(255, 152, 0, 0.3);
}

.btn-secondary:hover {
  background: var(--golden-orange);
  color: var(--bg-dark);
  box-shadow: var(--shadow-glow);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.8s both;
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, var(--primary-blue), var(--golden-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.feature-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 136, 229, 0.1), rgba(255, 152, 0, 0.1));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: var(--golden-orange);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Download Buttons */
.download-section {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
}

.download-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-base);
  font-weight: 500;
  font-size: 1.1rem;
  min-width: 200px;
  justify-content: center;
}

.download-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--golden-orange);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.download-btn.coming-soon {
  opacity: 0.7;
  cursor: not-allowed;
}

.download-btn.coming-soon:hover {
  transform: none;
}

.download-btn .icon {
  font-size: 1.5rem;
}

/* Footer */
footer {
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.3);
}

footer .container {
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
}

.footer-links a:hover {
  color: var(--golden-orange);
  transform: translateY(-2px);
}

.copyright {
  font-size: 0.875rem;
  margin-top: var(--spacing-md);
  color: var(--text-tertiary);
}

/* Legal Pages */
.legal-page {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
  animation: fadeInUp 0.8s ease-out;
}

.legal-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-blue), var(--golden-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.legal-page .effective-date {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-page h2 {
  font-size: 1.75rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--golden-orange);
  position: relative;
  padding-left: var(--spacing-md);
}

.legal-page h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-blue), var(--golden-orange));
  border-radius: var(--radius-full);
}

.legal-page h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.legal-page p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.8;
}

.legal-page ul, .legal-page ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.8;
}

.legal-page li {
  margin-bottom: var(--spacing-xs);
}

.legal-page a {
  color: var(--primary-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.legal-page a:hover {
  color: var(--golden-orange);
  border-bottom-color: var(--golden-orange);
}

.legal-page .contact-section {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--golden-orange);
  backdrop-filter: blur(10px);
}

/* Responsive */
@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    text-align: center;
  }
  
  nav {
    width: 100%;
    justify-content: center;
  }
  
  .hero {
    min-height: 80vh;
    padding: var(--spacing-xl) 0;
  }
  
  .hero-logo {
    width: 80px;
    height: 80px;
  }
  
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }
  
  .download-buttons {
    flex-direction: column;
  }
  
  .download-btn {
    width: 100%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  footer .footer-links {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .legal-page {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

/* Scroll Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 1s ease-out;
}

/* Interactive Elements */
.interactive-element {
  transition: all var(--transition-base);
  cursor: pointer;
}

.interactive-element:hover {
  transform: scale(1.05);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-blue), var(--golden-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}