/* Nexus Consortium Brand Colors & Design System */
:root {
  /* Brand Colors - Based on Logo */
  --color-primary-50: #ecf7fa;
  --color-primary-100: #cee9f2;
  --color-primary-200: #9dd3e5;
  --color-primary-300: #6cbdd8;
  --color-primary-400: #3ba7cb;
  --color-primary-500: #2d7a8e;  /* Main teal from logo */
  --color-primary-600: #1a5f7a;  /* Darker teal from logo */
  --color-primary-700: #164f63;
  --color-primary-800: #133f4c;
  --color-primary-900: #0f2f35;

  /* Secondary Colors - Gold/Yellow from logo */
  --color-secondary-50: #fffbeb;
  --color-secondary-100: #fef3c7;
  --color-secondary-200: #fde68a;
  --color-secondary-300: #fcd34d;
  --color-secondary-400: #f4c430;  /* Bright gold from logo */
  --color-secondary-500: #d4af37;  /* Main gold from logo */
  --color-secondary-600: #b7941f;
  --color-secondary-700: #92700f;
  --color-secondary-800: #6b5009;
  --color-secondary-900: #453305;

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

  /* Semantic Colors */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #0ea5e9;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Poppins', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --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;
  --text-7xl: 4.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Dark mode variables */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-50: #0f172a;
    --color-gray-100: #1e293b;
    --color-gray-200: #334155;
    --color-gray-300: #475569;
    --color-gray-400: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-600: #cbd5e1;
    --color-gray-700: #e2e8f0;
    --color-gray-800: #f1f5f9;
    --color-gray-900: #f8fafc;
  }
}

/* Base styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
}

/* Typography utilities */
.text-brand-primary {
  color: var(--color-primary-600);
}

.text-brand-secondary {
  color: var(--color-secondary-500);
}

.bg-brand-primary {
  background-color: var(--color-primary-600);
}

.bg-brand-secondary {
  background-color: var(--color-secondary-500);
}

/* Component utilities */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-500));
  color: white;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-600));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary-500), var(--color-secondary-400));
  color: var(--color-gray-900);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-secondary-600), var(--color-secondary-500));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-600);
  border: 2px solid var(--color-primary-600);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--color-primary-600);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px var(--color-secondary-400);
  }
  50% {
    box-shadow: 0 0 40px var(--color-secondary-400);
  }
}

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

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

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

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

/* Responsive utilities */
@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-5xl: 2.5rem;
    --text-6xl: 3rem;
  }
}