/* ==========================================================================
   AJGTECKNOWLEDGY.COM - MAIN STYLES
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Brand Colors */
  --primary-blue: #003594;        /* Dallas Cowboys Royal Blue */
  --primary-royal: #003594;       /* Dallas Cowboys Royal Blue */
  --primary-dark: #041E42;        /* Dallas Cowboys Dark Blue */
  --accent-gold: #f59e0b;
  
  /* AI-Tech Colors */
  --electric-blue: #0066cc;       /* Complementary blue */
  --cyber-royal: #001f5c;         /* Darker royal blue variation */
  --neural-teal: #14b8a6;
  
  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  
  /* Border Colors */
  --border-light: #e5e7eb;
  --border-medium: #d1d5db;
  --border-dark: #9ca3af;
  
  /* System Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Roboto', sans-serif;
  --font-display: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Roboto', sans-serif;
  
  /* Font Sizes */
  --text-6xl: 3.75rem;    /* 60px - Hero headlines */
  --text-5xl: 3rem;       /* 48px - Section headlines */
  --text-4xl: 2.25rem;    /* 36px - Page titles */
  --text-3xl: 1.875rem;   /* 30px - Card titles */
  --text-2xl: 1.5rem;     /* 24px - Subheadings */
  --text-xl: 1.25rem;     /* 20px - Large text */
  --text-lg: 1.125rem;    /* 18px - Body large */
  --text-base: 1rem;      /* 16px - Body text */
  --text-sm: 0.875rem;    /* 14px - Small text */
  --text-xs: 0.75rem;     /* 12px - Captions */
  
  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
  --transition-slower: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

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

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Section Styles */
section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title-line {
  display: block;
}

.hero-subtitle {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

@media (max-width: 767px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
}

/* Value Proposition Section */
.value-proposition {
  background-color: var(--bg-secondary);
}

.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .value-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.value-card {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: 1rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.value-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: block;
}

.value-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.value-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Projects Section */
.projects {
  background-color: var(--bg-primary);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card {
  background: var(--bg-primary);
  border-radius: 1rem;
  padding: var(--space-8);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  border: 1px solid var(--border-light);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.project-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tech-badge {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
  color: white;
  padding: var(--space-2) var(--space-3);
  border-radius: 9999px;
  font-size: var(--text-sm);
  font-weight: 500;
}

.project-link {
  color: var(--primary-blue);
  font-weight: 600;
  font-size: var(--text-lg);
  text-decoration: none;
  transition: color var(--transition-base);
}

.project-link:hover {
  color: var(--primary-dark);
}

/* Skills Section */
.skills {
  background-color: var(--bg-secondary);
}

.skills-categories {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .skills-categories {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-category {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.category-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.skill-badge {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--space-3) var(--space-4);
  border-radius: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-base);
}

.skill-badge:hover {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
  color: white;
  transform: translateY(-2px);
}

/* About Section */
.about {
  background-color: var(--bg-primary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-bio {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

/* Contact Section */
.contact {
  background-color: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr 2fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-primary);
  border-radius: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.contact-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 53, 148, 0.2);
  color: var(--primary-blue);
}

.contact-icon {
  font-size: 1.5rem;
}

/* Footer */
.footer {
  background-color: var(--primary-dark);
  color: var(--bg-primary);
  padding: var(--space-12) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

.footer-copyright {
  color: var(--text-tertiary);
}

.footer-tagline {
  color: var(--bg-primary);
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 767px) {
  :root {
    --text-6xl: 2.5rem;    /* Smaller hero on mobile */
    --text-5xl: 2rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
  }
  
  section {
    padding: var(--space-16) 0;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-actions .btn {
    text-align: center;
  }
}

/* Animation Support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}