/* Base Styles & Variables */
:root {
  /* Color Variables */
  --primary-color: #0A2342;
  --secondary-color: #2CA3E5;
  --accent-color: #FF6B35;
  --light-color: #F7F9FC;
  --dark-color: #151515;
  --success-color: #2ECC71;
  --warning-color: #F1C40F;
  --error-color: #E74C3C;
  
  /* Neutral Colors */
  --neutral-100: #F7F9FC;
  --neutral-200: #E9EDF5;
  --neutral-300: #D0D7E6;
  --neutral-400: #A8B3C7;
  --neutral-500: #6B7A99;
  --neutral-600: #4D5A77;
  --neutral-700: #2D3A5C;
  --neutral-800: #1C2540;
  --neutral-900: #0A1628;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 64px;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "San Francisco", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--neutral-800);
  background-color: var(--light-color);
}

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

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--primary-color);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #07172d;
  color: white;
}

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

.btn-secondary:hover {
  background-color: #1b8ac4;
  color: white;
}

.btn-accent {
  background-color: var(--accent-color);
  color: white;
}

.btn-accent:hover {
  background-color: #e05a27;
  color: white;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
  padding: var(--space-sm) 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.logo:hover {
  color: var(--secondary-color);
}

.main-nav ul {
  display: flex;
  list-style: none;
}

.main-nav li {
  margin-left: var(--space-md);
}

.main-nav a {
  color: var(--neutral-300);
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: white;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: width var(--transition-normal);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: white;
  margin: 5px 0;
  transition: all var(--transition-normal);
}

/* Footer */
.site-footer {
  background-color: var(--primary-color);
  color: var(--neutral-300);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

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

.footer-section p {
  margin-bottom: var(--space-sm);
}

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

.footer-section li {
  margin-bottom: var(--space-xs);
}

.footer-section a {
  color: var(--neutral-300);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

.social-icons {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  transition: background-color var(--transition-fast);
}

.social-icons a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive styles */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--primary-color);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }
  
  .main-nav.active {
    max-height: 300px;
    box-shadow: var(--shadow-md);
  }
  
  .main-nav ul {
    flex-direction: column;
    padding: var(--space-sm);
  }
  
  .main-nav li {
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .main-nav li:last-child {
    border-bottom: none;
  }
  
  .main-nav a {
    display: block;
    padding: var(--space-sm) 0;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-sm);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--neutral-800);
  background-color: white;
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--secondary-color);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(44, 163, 229, 0.2);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

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

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

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

.bg-light {
  background-color: var(--neutral-100);
}

.bg-dark {
  background-color: var(--primary-color);
  color: white;
}

.bg-dark h2,
.bg-dark h3 {
  color: white;
}