:root {
  --primary-color: #003366;
  /* Navy Blue */
  --secondary-color: #ffffff;
  /* White */
  --accent-color: #28a745;
  /* Green */
  --accent-hover: #218838;
  --text-dark: #333333;
  --text-light: #f8f9fa;
  --bg-light: #f4f6f9;
  --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
  font-size: 16px;
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  font-family: var(--font-main);
  color: var(--text-dark);
  background-color: var(--secondary-color);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--primary-color);
  font-weight: 600;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--accent-color);
  text-decoration: none;
}

/* Layout */
.navbar {
  background-color: var(--primary-color) !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-accent {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
  padding: 10px 25px;
  font-weight: bold;
  border-radius: 5px;
  transition: all 0.3s;
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: white;
  transform: translateY(-2px);
}

/* Sections */
.hero-section {
  background: linear-gradient(rgba(0, 51, 102, 0.9), rgba(0, 51, 102, 0.8)), url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  color: white;
  padding: 100px 0;
  text-align: center;
}

.hero-section h1 {
  color: white;
  font-size: 3.5rem;
  margin-bottom: 20px;
}

.hero-section p {
  font-size: 1.25rem;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.feature-box {
  padding: 30px;
  border-radius: 8px;
  background: white;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  height: 100%;
  transition: transform 0.3s;
  text-align: center;
}

.feature-box:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 20px;
}

.section-padding {
  padding: 80px 0;
}

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

/* Accordion */
.accordion-button:not(.collapsed) {
  color: var(--primary-color);
  background-color: rgba(40, 167, 69, 0.1);
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(40, 167, 69, 0.25);
}