/* Sphere One - Modern Futuristic Design */

:root {
  /* Light Mode Colors */
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #ec4899;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.8);
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: rgba(148, 163, 184, 0.2);
  --glow-color: rgba(99, 102, 241, 0.3);
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --primary-color: #818cf8;
  --secondary-color: #a78bfa;
  --accent-color: #f472b6;
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.8);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: rgba(148, 163, 184, 0.1);
  --glow-color: rgba(129, 140, 248, 0.3);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* Animated Background */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--bg-primary);
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--gradient-1);
  top: -200px;
  left: -200px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--gradient-2);
  top: 50%;
  right: -150px;
  animation-delay: 5s;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: var(--gradient-3);
  bottom: -100px;
  left: 30%;
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(50px, -50px) scale(1.1);
  }
  66% {
    transform: translate(-30px, 30px) scale(0.9);
  }
}

/* Navbar */
.navbar-sphere {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar-sphere.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-image {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--glow-color);
}

.theme-icon {
  width: 24px;
  height: 24px;
  color: var(--text-primary);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  text-align: center;
}

.hero-content {
  max-width: 1000px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.6;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

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

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
  animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-1);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
}

.feature-card:nth-child(2) .feature-icon {
  background: var(--gradient-2);
}

.feature-card:nth-child(3) .feature-icon {
  background: var(--gradient-3);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Download Section */
.download-section {
  padding: 6rem 2rem;
  text-align: center;
}

.download-content {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.qr-codes-container {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.qr-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  min-width: 280px;
}

.qr-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.qr-placeholder {
  width: 200px;
  height: 200px;
  margin: 0 auto 1.5rem;
  background: white;
  border-radius: 16px;
  padding: 1rem;
  border: 2px solid var(--border-color);
}

.qr-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.platform-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

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

/* Capabilities Section */
.capabilities-section {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.capabilities-content {
  max-width: 1200px;
  margin: 0 auto;
}

.capabilities-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.capability-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.capability-item:hover {
  transform: translateX(10px);
  border-color: var(--primary-color);
}

.capability-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--gradient-1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.capability-text {
  flex: 1;
}

.capability-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.capability-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Footer */
.footer-sphere {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 1rem;
}

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

.footer-link {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-section {
    padding: 6rem 1.5rem 3rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .qr-codes-container {
    gap: 2rem;
  }
  
  .capabilities-list {
    grid-template-columns: 1fr;
  }
  
  .navbar-content {
    padding: 0 1.5rem;
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}