:root {
  --primary-color: #002f6c;
  --primary-dark: #001f4a;
  --primary-light: #004a9f;
  --accent-color: #0066cc;
  --text-dark: #1a1a1a;
  --text-light: #666;
  --bg-light: #f8f9fa;
  --white: #ffffff;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s, visibility 0.5s;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 47, 108, 0.3);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--primary-dark);
  transform: translateY(-5px);
}

/* Top Bar */
.top-bar {
  background: var(--primary-color);
  color: var(--white);
  padding: 10px 0;
  font-size: 14px;
  text-align: center;
}

/* Header */
.header {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 999;
}

.header .navbar-brand {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-color);
}

.header .nav-link {
  color: var(--text-dark);
  font-weight: 500;
  padding: 10px 20px;
  transition: color 0.3s;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 20px;
  margin-bottom: 30px;
  opacity: 0.95;
}

/* Content Sections */
.content-section {
  padding: 80px 0;
}

.content-section:nth-child(even) {
  background: var(--bg-light);
}

.section-heading {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 4px;
  background: var(--accent-color);
  border-radius: 2px;
}

.subsection-heading {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-top: 40px;
  margin-bottom: 20px;
}

.content-card {
  background: var(--white);
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.content-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.highlight-box {
  background: linear-gradient(135deg, rgba(0, 47, 108, 0.05) 0%, rgba(0, 102, 204, 0.05) 100%);
  border-left: 4px solid var(--primary-color);
  padding: 25px;
  margin: 30px 0;
  border-radius: 5px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin: 40px 0;
}

.metric-item {
  background: var(--white);
  padding: 25px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.metric-icon {
  font-size: 40px;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.metric-label {
  font-size: 14px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.metric-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 18px;
  margin-bottom: 40px;
  opacity: 0.95;
}

.btn-cta {
  background: var(--white);
  color: var(--primary-color);
  padding: 15px 40px;
  font-size: 18px;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}


/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s, transform 0.6s;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 32px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .section-heading {
    font-size: 28px;
  }
  
  .content-section {
    padding: 50px 0;
  }
  
  .scroll-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}