/* ============================================
   DESIGN SYSTEM & CSS VARIABLES
   ============================================ */

:root {
  /* Color Palette - Sierra Safety Training Brand Colors */
  --color-primary: hsl(0, 0%, 0%);
  /* Black - Logo Color */
  --color-primary-dark: hsl(0, 0%, 10%);
  --color-primary-light: hsl(0, 0%, 95%);
  --color-secondary: hsl(0, 0%, 30%);
  /* Dark Gray */
  --color-accent: hsl(0, 0%, 20%);
  --color-success: hsl(145, 63%, 42%);
  /* Keep green for success states */

  /* Neutrals */
  --color-dark: hsl(0, 0%, 13%);
  --color-gray-900: hsl(0, 0%, 20%);
  --color-gray-800: hsl(0, 0%, 30%);
  --color-gray-700: hsl(0, 0%, 45%);
  --color-gray-600: hsl(0, 0%, 60%);
  --color-gray-400: hsl(0, 0%, 75%);
  --color-gray-200: hsl(0, 0%, 90%);
  --color-gray-100: hsl(0, 0%, 96%);
  --color-white: hsl(0, 0%, 100%);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, hsl(0, 0%, 0%) 0%, hsl(0, 0%, 20%) 100%);
  --gradient-hero: linear-gradient(135deg, hsl(0, 0%, 10%) 0%, hsl(0, 0%, 25%) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.75) 0%, rgba(30, 30, 30, 0.85) 100%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: clamp(1rem, 2vw, 1.125rem);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: white;
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  background: white;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xs) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.9;
}

.logo img {
  height: 100px;
  width: auto;
  display: block;
}

.logo-icon {
  display: none;
  /* Hidden - using actual logo image instead */
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-800);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.625rem 1.5rem;
  background: var(--color-dark);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  background: var(--color-gray-900);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-dark);
  cursor: pointer;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-lg);
  color: white;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  animation: fadeInUp 0.8s ease;
}

.hero h1 {
  color: white;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  max-width: 700px;
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-cta-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s backwards;
}

.btn {
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.125rem;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: white;
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid white;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: white;
  color: var(--color-primary);
  transform: translateY(-3px);
}

/* ============================================
   STATS SECTION
   ============================================ */

.stats-section {
  position: relative;
  z-index: 10;
  margin-top: -80px;
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  background: white;
  padding: var(--spacing-xl) var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.stat-card {
  text-align: center;
  border-right: 1px solid var(--color-gray-200);
}

.stat-card:last-child {
  border-right: none;
  padding: var(--spacing-md);
  transition: transform var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 1rem;
  color: var(--color-gray-700);
  font-weight: 500;
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services-section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: var(--color-gray-100);
}

.section-container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.service-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  position: relative;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
  transform: scale(1.1);
}

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

.service-icon {
  display: none;
  /* Removed for cleaner professional design */
}

.service-card h3 {
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-md);
}

.service-link {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 0.75rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: white;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-text h2 {
  margin-bottom: var(--spacing-md);
}

.about-text p {
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.about-features {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.about-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  color: var(--color-gray-800);
  font-weight: 500;
}

.about-features li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: var(--gradient-primary);
  color: white;
  text-align: center;
}

.cta-content h2 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

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

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: var(--color-dark);
  color: var(--color-gray-400);
  padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.footer-section p {
  line-height: 1.8;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
  color: var(--color-gray-600);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .stat-card {
    border-right: none;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .stat-card:nth-child(2n) {
    border-right: none;
  }

  .stat-card:nth-last-child(-n+2) {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

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

  .hero-cta-group {
    flex-direction: column;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .stat-card {
    border-right: none;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .stat-card:last-child {
    border-bottom: none;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .cta-buttons {
    flex-direction: column;
  }
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

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

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}