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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-semibold);
}

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

ul {
  list-style: none;
}

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

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

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

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

.section-header h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background-color: var(--color-primary);
  margin: var(--spacing-sm) auto 0;
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-index-fixed);
  background-color: rgba(8, 19, 58, 0.95);
  backdrop-filter: blur(10px);
  transition: background-color var(--transition-normal);
}

.header.scrolled {
  background-color: var(--color-background);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  height: 80px;
}

.logo h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: 1px;
  margin: 0;
}

.logo span {
  font-weight: var(--font-weight-regular);
  opacity: 0.7;
  margin-left: var(--spacing-xs);
}

.nav-desktop ul {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-desktop ul li a {
  font-weight: var(--font-weight-medium);
  position: relative;
}

.nav-desktop ul li a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav-desktop ul li a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: var(--z-index-modal);
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-text);
  margin: 5px 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 400px;
  height: 100%;
  background-color: var(--color-background-light);
  z-index: var(--z-index-modal-backdrop);
  transition: right var(--transition-normal);
  padding: 100px var(--spacing-xl) var(--spacing-xl);
  box-shadow: -5px 0 30px rgba(0, 0, 0, 0.2);
}

.nav-mobile.active {
  right: 0;
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.nav-mobile ul li a {
  font-size: var(--font-size-lg);
  display: block;
  padding: var(--spacing-sm) 0;
}

/* Main Content Sections */
.hero {
  padding: 180px 0 100px;
  background: linear-gradient(rgba(8, 19, 58, 0.9), rgba(8, 19, 58, 1)), url('https://images.pexels.com/photos/7647913/pexels-photo-7647913.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2');
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.hero-content h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero-content p {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-2xl);
}

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

/* Footer */
.footer {
  background-color: var(--color-background-lighter);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-logo {
  flex: 1 1 300px;
}

.footer-logo h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.footer-logo span {
  font-weight: var(--font-weight-light);
  opacity: 0.7;
}

.footer-logo p {
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  flex: 2 1 600px;
}

.footer-column {
  flex: 1 1 150px;
}

.footer-column h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.footer-column h3::after {
  content: '';
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--color-primary);
  margin-top: var(--spacing-xs);
}

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

.footer-column ul li a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Media queries */
@media (max-width: 991px) {
  .nav-desktop, .header-cta {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-content p {
    font-size: var(--font-size-lg);
  }
  
  .section-header h2 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 767px) {
  section {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero {
    padding: 140px 0 60px;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .hero-content p {
    font-size: var(--font-size-md);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .section-header {
    margin-bottom: var(--spacing-xl);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-content h1 {
    font-size: calc(var(--font-size-2xl) - 0.25rem);
  }
}