:root {
  --blue-primary: #0056b3;
  --blue-dark: #002752;
  --blue-light: #e7f1ff;
  --blue-accent: #007bff;
  --text-dark: #1a1d20;
  --bg-body: #f8f9fa;
  --white: #ffffff;
}

body {
  font-family: "Roboto", sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-body);
  color: var(--text-dark);
}

h1,
h2,
h3,
.navbar a {
  font-family: "Montserrat", sans-serif;
}

/* Navigation */
.navbar {
  background-color: var(--blue-dark);
  padding: 15px 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}

.navbar li {
  margin: 0 20px;
}

.navbar a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 1px;
  transition: 0.3s;
  opacity: 0.9;
}

.navbar a:hover {
  color: #58a6ff;
  opacity: 1;
}

/* Banner Section */
.banner {
  width: 100%;
  height: 320px;
  background:
    linear-gradient(135deg, rgba(0, 39, 82, 0.85), rgba(0, 86, 179, 0.7)),
    url("https://img.freepik.com/free-photo/modern-stationary-collection-arrangement_23-2149309643.jpg");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
}

.banner-text h1 {
  font-size: 40px;
  margin-bottom: 5px;
  font-weight: 700;
  text-transform: uppercase;
}

/* Main Grid */
.container {
  max-width: 1200px;
  margin: -60px auto 60px auto;
  padding: 0 20px;
  position: relative;
  z-index: 10;
}

.grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 25px;
}

/* Card Style */
.training-card {
  background: var(--white);
  border: none;
  padding: 45px 30px;
  border-radius: 15px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  border-bottom: 4px solid transparent;
}

.training-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 20px 40px rgba(0, 86, 179, 0.15);
  border-bottom: 4px solid var(--blue-accent);
}

/* Icon Styling */
.card-icon {
  font-size: 55px;
  color: var(--blue-primary);
  margin-bottom: 25px;
  transition: 0.4s;
}

.training-card:hover .card-icon {
  color: var(--blue-accent);
  transform: scale(1.1) rotate(5deg);
}

.card-category {
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 700;
  color: #adb5bd;
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: block;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--blue-dark);
}

.card-desc {
  font-size: 14px;
  color: #6c757d;
  margin-bottom: 30px;
  line-height: 1.6;
  min-height: 60px;
}

.btn-action {
  display: inline-block;
  padding: 12px 30px;
  background: var(--blue-light);
  color: var(--blue-primary);
  border-radius: 8px;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  text-decoration: none;
  transition: 0.3s;
}

.training-card:hover .btn-action {
  background: var(--blue-primary);
  color: var(--white);
}

/* Footer */
footer {
  background: var(--blue-dark);
  color: #dee2e6;
  padding: 60px 0;
  text-align: center;
}

.footer-logo {
  color: var(--white);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 15px;
  display: block;
  letter-spacing: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .grid-layout {
    grid-template-columns: 1fr;
  }
  .banner-text h1 {
    font-size: 28px;
  }
  .container {
    margin-top: -30px;
  }
}