/* American Defense Systems - Modern Design System */

/* CSS Variables */
:root {
  /* Colors - Professional Defense Palette */
  --primary-dark: #0a192f;
  --primary-medium: #172a45;
  --primary-light: #2c5282;
  --accent-primary: #00d4ff;
  --accent-secondary: #00ff88;
  --accent-tertiary: #7c3aed;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-light: #718096;
  --text-inverse: #ffffff;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #e2e8f0;
  --bg-dark: #0a192f;
  --border-color: #e2e8f0;
  --border-dark: #2c5282;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing Scale */
  --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;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --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);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-dark);
}

.nav {
  padding: var(--space-4) 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-inverse);
  margin-bottom: 0;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

.nav-link {
  color: var(--text-inverse);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--accent-primary);
  background: rgba(0, 212, 255, 0.1);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-inverse);
  transition: all var(--transition-base);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 100%);
  z-index: -2;
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(0, 255, 136, 0.05) 0%, transparent 50%);
  z-index: -1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 var(--space-4);
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--text-inverse);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-inverse);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-inverse);
  opacity: 0.7;
}

.scroll-text {
  font-size: 0.875rem;
  margin-bottom: var(--space-2);
  display: block;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin: 0 auto;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: rotate(45deg) translateY(0);
  }
  40% {
    transform: rotate(45deg) translateY(-10px);
  }
  60% {
    transform: rotate(45deg) translateY(-5px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--primary-light));
  color: var(--text-inverse);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: transparent;
  color: var(--text-inverse);
  border-color: var(--text-inverse);
}

.btn-secondary:hover {
  background: var(--text-inverse);
  color: var(--primary-dark);
}

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

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Services Section */
.services {
  background: var(--bg-secondary);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.service-item {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.service-item:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent-primary), var(--primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  color: var(--text-inverse);
  font-size: 1.5rem;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.service-link {
  color: var(--accent-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-base);
}

.service-link:hover {
  gap: var(--space-4);
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about-text {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-values h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-6);
}

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

.value-item h4 {
  color: var(--primary-light);
  margin-bottom: var(--space-2);
}

.value-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}



/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-primary), var(--primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  flex-shrink: 0;
}

.contact-item h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.contact-item p {
  color: var(--text-secondary);
}

/* Form Styles */
.form {
  background: var(--bg-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-6);
  text-align: center;
}

.form-group {
  margin-bottom: var(--space-6);
}

.form label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form input,
.form textarea {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
  background: var(--bg-primary);
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form button {
  width: 100%;
  margin-top: var(--space-4);
}

/* Footer */
.footer {
  background: var(--primary-dark);
  color: var(--text-inverse);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand h3 {
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
}

.footer-brand p {
  color: var(--text-light);
  opacity: 0.8;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.footer-column h4 {
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
  font-size: 1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-2);
}

.footer-column a {
  color: var(--text-light);
  opacity: 0.8;
  font-size: 0.95rem;
  transition: all var(--transition-base);
}

.footer-column a:hover {
  color: var(--accent-primary);
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: var(--space-8);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-light);
  opacity: 0.8;
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  /* Navigation */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 25, 47, 0.98);
    flex-direction: column;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-dark);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  /* Hero */
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  /* Grid Layouts */
  .service-grid {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .stats-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Typography */
  .section-title {
    font-size: 2rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  section {
    padding: var(--space-12) 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .service-item,
  .form {
    padding: var(--space-6);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Loading States */
.form:has(button[disabled]) {
  opacity: 0.7;
  pointer-events: none;
}

/* Focus States */
.nav-link:focus,
.btn:focus,
.form input:focus,
.form textarea:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .header,
  .hero,
  .contact-form {
    display: none;
  }
  
  body {
    font-size: 12pt;
    color: black;
    background: white;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}