/* ===== CSS Variables & Reset ===== */
:root {
  --color-primary: #1a3a5c;
  --color-primary-dark: #0d2a47;
  --color-secondary: #c9a75d;
  --color-secondary-hover: #b8954a;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg-light: #f8f9fa;
  --color-white: #ffffff;
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-shadow-hover: rgba(0, 0, 0, 0.15);
  
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.3s ease;
  --container-width: 1200px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius);
}

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

a:hover {
  color: var(--color-secondary);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  z-index: 1000;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-secondary);
  color: var(--color-white);
  border: 2px solid var(--color-secondary);
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.btn:hover {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--color-shadow-hover);
}

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

.btn-outline:hover {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius);
}

.btn-primary:hover {
  background-color: var(--color-secondary-hover);
  color: var(--color-white);
}

/* ===== Header & Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  box-shadow: 0 2px 10px var(--color-shadow);
  padding: var(--spacing-sm) 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  max-height: 50px;
  width: auto;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger {
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 3px;
  transition: var(--transition);
}

.main-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-link {
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-secondary);
  background-color: rgba(201, 167, 93, 0.1);
}

.nav-link.btn-primary {
  margin-left: var(--spacing-xs);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://steelbisonsecurity.com/wp-content/uploads/2024/01/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(26, 58, 92, 0.95) 0%, rgba(13, 42, 71, 0.98) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Services Section ===== */
.services-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-light);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  text-align: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  font-size: 1.1rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--color-shadow);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--color-shadow-hover);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.service-content {
  padding: var(--spacing-md);
}

.service-content h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.service-content p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.service-link {
  font-weight: 600;
  color: var(--color-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.service-link:hover {
  gap: 0.5rem;
}

/* ===== About Preview ===== */
.about-preview {
  padding: var(--spacing-xl) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 30px var(--color-shadow);
}

.about-content h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.about-content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

.about-features {
  margin-bottom: var(--spacing-md);
}

.about-features li {
  padding: var(--spacing-xs) 0;
  font-weight: 500;
  color: var(--color-text);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.cta-section h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-buttons .btn-outline {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta-buttons .btn-outline:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding-top: var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
}

.footer-brand img {
  max-height: 45px;
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-icon {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
  transition: var(--transition);
  opacity: 0.85;
}

.social-links a:hover .social-icon {
  opacity: 1;
  transform: translateY(-2px);
}

.footer-links h3,
.footer-contact h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-secondary);
}

.footer-links ul li,
.contact-list li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-secondary);
  padding-left: 4px;
}

.contact-list strong {
  display: block;
  margin-bottom: 2px;
  color: var(--color-secondary);
}

.contact-list a {
  color: rgba(255, 255, 255, 0.9);
}

.contact-list a:hover {
  color: var(--color-secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-sm) 0;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-tagline {
  margin-top: var(--spacing-xs);
  font-style: italic;
  color: var(--color-secondary);
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-features {
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 2.5rem;
    --spacing-xl: 3rem;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--color-white);
    padding: var(--spacing-md);
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--color-shadow);
    overflow-y: auto;
  }
  
  .main-nav.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .nav-link {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  
  .nav-link.btn-primary {
    margin-left: 0;
    margin-top: var(--spacing-sm);
    text-align: center;
  }
  
  .hamburger.active:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .hamburger.active:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .footer-links ul,
  .contact-list {
    text-align: center;
  }
  
  .footer-links a:hover {
    padding-left: 0;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero-cta,
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-large {
    width: 100%;
    max-width: 300px;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
}

/* ===== Accessibility & Performance ===== */
@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;
  }
}

/* Focus indicators for keyboard navigation */
a:focus,
button:focus,
.nav-link:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Image loading states */
img[loading="lazy"] {
  background-color: #f