/* Modern Dark Theme Design System */
:root {
  /* Color Palette - Dark First */
  --primary-50: #fef2f2;
  --primary-100: #fee2e2;
  --primary-200: #fecaca;
  --primary-300: #fca5a5;
  --primary-400: #f87171;
  --primary-500: #ef4444;
  --primary-600: #dc2626;
  --primary-700: #b91c1c;
  --primary-800: #991b1b;
  --primary-900: #7f1d1d;
  
  /* Orange/Red Brand Colors */
  --brand-50: #fff7ed;
  --brand-100: #ffedd5;
  --brand-200: #fed7aa;
  --brand-300: #fdba74;
  --brand-400: #fb923c;
  --brand-500: #f97316;
  --brand-600: #ea580c;
  --brand-700: #c2410c;
  --brand-800: #9a3412;
  --brand-900: #7c2d12;
  
  /* Accent Colors */
  --accent-50: #f0f9ff;
  --accent-100: #e0f2fe;
  --accent-200: #bae6fd;
  --accent-300: #7dd3fc;
  --accent-400: #38bdf8;
  --accent-500: #0ea5e9;
  --accent-600: #0284c7;
  --accent-700: #0369a1;
  --accent-800: #075985;
  --accent-900: #0c4a6e;
  
  /* Dark Theme Colors */
  --background-primary: #0a0a0a;
  --background-secondary: #111111;
  --background-tertiary: #1a1a1a;
  --background-elevated: #1f1f1f;
  --background-glass: rgba(255, 255, 255, 0.05);
  --background-overlay: rgba(0, 0, 0, 0.8);
  
  --surface-primary: #111111;
  --surface-secondary: #1a1a1a;
  --surface-tertiary: #262626;
  --surface-hover: #2a2a2a;
  --surface-active: #333333;
  --surface-border: #333333;
  --surface-glass: rgba(255, 255, 255, 0.1);
  
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-tertiary: #737373;
  --text-inverse: #000000;
  --text-accent: #fb923c;
  --text-brand: #f97316;
  --text-success: #22c55e;
  --text-warning: #f59e0b;
  --text-error: #ef4444;
  
  --border-primary: #333333;
  --border-secondary: #404040;
  --border-tertiary: #525252;
  --border-focus: #fb923c;
  --border-error: #ef4444;
  --border-success: #22c55e;
  
  /* Modern Gradients */
  --gradient-primary: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  --gradient-secondary: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(249, 115, 22, 0.3);
  --shadow-glow-lg: 0 0 40px rgba(249, 115, 22, 0.2);
  
  /* Spacing System */
  --space-px: 1px;
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-9: 2.25rem;
  --space-10: 2.5rem;
  --space-11: 2.75rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-28: 7rem;
  --space-32: 8rem;
  --space-36: 9rem;
  --space-40: 10rem;
  --space-44: 11rem;
  --space-48: 12rem;
  --space-52: 13rem;
  --space-56: 14rem;
  --space-60: 15rem;
  --space-64: 16rem;
  --space-72: 18rem;
  --space-80: 20rem;
  --space-96: 24rem;
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  --font-size-8xl: 6rem;
  --font-size-9xl: 8rem;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Font Weights */
  --font-thin: 100;
  --font-extralight: 200;
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;
  
  /* Transitions */
  --transition-none: none;
  --transition-all: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index Scale */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-auto: auto;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--font-size-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--background-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-none);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 6vw, 3.75rem);
  font-weight: var(--font-bold);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--font-semibold);
}

h4 {
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  font-weight: var(--font-semibold);
}

h5 {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-medium);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-medium);
}

p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

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

a:hover {
  color: var(--brand-400);
}

a:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-lg {
  max-width: 1400px;
}

.container-sm {
  max-width: 800px;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Animations */
@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 pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: var(--shadow-glow);
  }
  50% {
    box-shadow: var(--shadow-glow-lg);
  }
}

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

/* Animation Classes */
.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fade-in-right {
  animation: fadeInRight 0.6s ease-out forwards;
}

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

.animate-float {
  animation: float 3s ease-in-out infinite;
}

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

/* Intersection Observer Animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion preferences */
@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;
  }
}