/* ============================================
   DESIGN SYSTEM - AI-POWERED THEME
   ============================================ */

:root {
  /* ========== AI-Themed Color Palette ========== */
  
  /* Primary AI Colors */
  --color-ai-cyan: #00f0ff;
  --color-ai-purple: #a855f7;
  --color-ai-blue: #3b82f6;
  --color-neural-pink: #ec4899;
  --color-quantum-green: #10b981;
  
  /* Dark Mode Base */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #13131a;
  --color-bg-tertiary: #1a1a24;
  --color-bg-elevated: #20202e;
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0b8;
  --color-text-tertiary: #6b6b85;
  --color-text-accent: var(--color-ai-cyan);
  
  /* Gradient Definitions */
  --gradient-ai-primary: linear-gradient(135deg, #00f0ff 0%, #a855f7 100%);
  --gradient-ai-secondary: linear-gradient(135deg, #3b82f6 0%, #ec4899 100%);
  --gradient-neural: linear-gradient(135deg, #a855f7 0%, #ec4899 50%, #00f0ff 100%);
  --gradient-quantum: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
  --gradient-dark-overlay: linear-gradient(180deg, rgba(10, 10, 15, 0.95) 0%, rgba(10, 10, 15, 0.8) 100%);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: 20px;
  
  /* ========== Typography ========== */
  
  /* Font Families */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  --text-7xl: 4.5rem;      /* 72px */
  
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* ========== Spacing System (8px grid) ========== */
  
  --space-1: 0.5rem;    /* 8px */
  --space-2: 1rem;      /* 16px */
  --space-3: 1.5rem;    /* 24px */
  --space-4: 2rem;      /* 32px */
  --space-5: 2.5rem;    /* 40px */
  --space-6: 3rem;      /* 48px */
  --space-8: 4rem;      /* 64px */
  --space-10: 5rem;     /* 80px */
  --space-12: 6rem;     /* 96px */
  --space-16: 8rem;     /* 128px */
  --space-20: 10rem;    /* 160px */
  
  /* ========== Shadows ========== */
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  
  /* AI Glow Shadows */
  --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3), 0 0 40px rgba(0, 240, 255, 0.1);
  --shadow-glow-purple: 0 0 20px rgba(168, 85, 247, 0.3), 0 0 40px rgba(168, 85, 247, 0.1);
  --shadow-glow-pink: 0 0 20px rgba(236, 72, 153, 0.3), 0 0 40px rgba(236, 72, 153, 0.1);
  
  /* ========== Border Radius ========== */
  
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* ========== Transitions ========== */
  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* ========== Z-Index Scale ========== */
  
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-notification: 800;
  --z-max: 9999;
}

/* ============================================
   REUSABLE ANIMATION KEYFRAMES
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

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

@keyframes glow {
  0%, 100% {
    filter: brightness(1) drop-shadow(0 0 10px currentColor);
  }
  50% {
    filter: brightness(1.2) drop-shadow(0 0 20px currentColor);
  }
}

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Neural Network Pulse */
@keyframes neuralPulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.1);
  }
}

/* AI Scan Effect */
@keyframes aiScan {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

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

/* Glassmorphism */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-ai-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-secondary {
  background: var(--gradient-ai-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Gradient Backgrounds */
.bg-gradient-ai {
  background: var(--gradient-ai-primary);
}

.bg-gradient-neural {
  background: var(--gradient-neural);
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

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

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

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

/* Animation Utilities */
.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-scale-in {
  animation: scaleIn var(--transition-base) ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

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

/* Hover Effects */
.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-8px);
}

.hover-glow {
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

.hover-scale {
  transition: transform var(--transition-base);
}

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

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Mobile First Approach */
/* xs: 0-639px (default) */
/* sm: 640px+ */
/* md: 768px+ */
/* lg: 1024px+ */
/* xl: 1280px+ */
/* 2xl: 1536px+ */