/* Global Styles & Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* === DESIGN TOKENS === */
:root {
  /* Primary Colors */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* Secondary Colors */
  --secondary-50: #fdf4ff;
  --secondary-100: #fae8ff;
  --secondary-200: #f5d0fe;
  --secondary-300: #f0abfc;
  --secondary-400: #e879f9;
  --secondary-500: #d946ef;
  --secondary-600: #c026d3;
  --secondary-700: #a21caf;
  --secondary-800: #86198f;
  --secondary-900: #701a75;

  /* Accent Colors */
  --accent-50: #ecfeff;
  --accent-100: #cffafe;
  --accent-200: #a5f3fc;
  --accent-300: #67e8f9;
  --accent-400: #22d3ee;
  --accent-500: #06b6d4;
  --accent-600: #0891b2;
  --accent-700: #0e7490;
  --accent-800: #155e75;
  --accent-900: #164e63;

  /* Neutral Colors */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  /* Surface Colors */
  --surface-primary: #0f172a;
  --surface-secondary: #1e293b;
  --surface-tertiary: #334155;
  --surface-elevated: rgba(30, 41, 59, 0.8);
  --surface-glass: rgba(30, 41, 59, 0.3);

  /* Gradient Definitions */
  --gradient-primary: linear-gradient(135deg, #3b82f6, #d946ef, #06b6d4);
  --gradient-secondary: linear-gradient(135deg, #1e40af, #a21caf, #0e7490);
  --gradient-accent: linear-gradient(90deg, #3b82f6, #d946ef, #06b6d4);
  --gradient-glow: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(217, 70, 239, 0.3), rgba(6, 182, 212, 0.3));

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius Scale */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Shadow Scale */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3), 0 0 40px rgba(217, 70, 239, 0.2);

  /* Animation Timings */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --easing-standard: cubic-bezier(0.4, 0.0, 0.2, 1);
  --easing-decelerate: cubic-bezier(0.0, 0.0, 0.2, 1);
  --easing-accelerate: cubic-bezier(0.4, 0.0, 1, 1);
}

/* === BASE STYLES === */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: var(--surface-primary);
  color: var(--neutral-50);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === UTILITY CLASSES === */

/* Gradient Utilities */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: gradientShift 3s ease-in-out infinite;
}

.gradient-bg {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
}

.gradient-border {
  position: relative;
  border-radius: var(--radius-lg);
}

.gradient-border::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  z-index: -1;
  background-size: 200% 200%;
  animation: gradientShift 3s ease-in-out infinite;
}

/* Glass Morphism */
.glass {
  background: var(--surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.blur-bg {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Card Styles */
.card {
  background: var(--surface-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--easing-standard);
}

.card-hover {
  transition: all var(--duration-normal) var(--easing-standard);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 255, 255, 0.1);
}

.card-glow {
  position: relative;
  overflow: hidden;
}

.card-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--duration-slow) var(--easing-standard);
}

.card-glow:hover::before {
  left: 100%;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing-standard);
  font-size: var(--text-base);
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  background-size: 200% 200%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background-position: right center;
}

.btn-secondary {
  background: var(--surface-glass);
  color: var(--neutral-100);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Glow Effects */
.glow {
  box-shadow: var(--shadow-glow);
}

.glow-hover {
  transition: box-shadow var(--duration-normal) var(--easing-standard);
}

.glow-hover:hover {
  box-shadow: var(--shadow-glow);
}

/* Section Spacing */
.section {
  padding: var(--space-5xl) 0;
  position: relative;
  overflow: hidden;
}

.section-sm {
  padding: var(--space-4xl) 0;
}

.section-lg {
  padding: var(--space-5xl) 0 var(--space-4xl) 0;
}

/* Background Patterns */
.pattern-dots {
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 20px 20px;
}

.pattern-grid {
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* === ANIMATIONS === */
@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Animation Classes */
.animate-float {
  animation: float 6s ease-in-out infinite;
}

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

.animate-fade-in {
  animation: fadeInUp var(--duration-slow) var(--easing-decelerate) forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft var(--duration-slow) var(--easing-decelerate) forwards;
}

.animate-fade-in-right {
  animation: fadeInRight var(--duration-slow) var(--easing-decelerate) forwards;
}

.animate-scale-in {
  animation: scaleIn var(--duration-slow) var(--easing-decelerate) forwards;
}

.animate-slide-up {
  animation: slideUp var(--duration-slow) var(--easing-decelerate) forwards;
}

/* Responsive Video Container */
.aspect-video {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.aspect-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--radius-lg);
}

/* Enhanced Video Responsiveness */
.video-responsive {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  min-height: 200px;
  display: block !important;
  visibility: visible !important;
}

.video-responsive iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--radius-lg);
  display: block !important;
  visibility: visible !important;
}

/* Mobile-specific video styling */
@media (max-width: 768px) {
  .video-responsive {
    min-height: 250px !important;
    padding-bottom: 56.25% !important;
    margin: 0 !important;
    width: 100% !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
  }
  
  .video-responsive iframe {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
  }
}

/* Tablet-specific video styling */
@media (min-width: 769px) and (max-width: 1024px) {
  .video-responsive {
    min-height: 300px;
    padding-bottom: 56.25%;
    display: block !important;
    visibility: visible !important;
  }
  
  .video-responsive iframe {
    width: 100% !important;
    height: 100% !important;
    display: block !important;
    visibility: visible !important;
  }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-500);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-600);
}

/* Focus Styles */
*:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Typography Improvements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p {
  line-height: 1.7;
  color: var(--neutral-300);
}

/* Link Styles */
a {
  color: var(--primary-400);
  text-decoration: none;
  transition: color var(--duration-fast) var(--easing-standard);
}

a:hover {
  color: var(--primary-300);
}

/* Selection Styles */
::selection {
  background: var(--primary-500);
  color: white;
}

/* Reduced Motion */
@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;
  }
}

/* Print Styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
}