/* Global Styles with Inter Font */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, #003366 0%, #001a33 100%);
    color: #fff;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 800; /* ExtraBold */
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo img {
    height: 40px;
    margin-right: 15px;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}
nav ul li {
    margin-left: 25px;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}
nav ul li a:hover {
    color: #00ccff; /* Cyan */
}

main {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    min-height: 80vh;
}

h1, h2, h3 {
    color: #003366;
    font-weight: 800;
}
h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-top: 2rem; }
h3 { font-size: 1.5rem; margin-top: 1.5rem; }

/* Enhanced Hero Section */
.hero {
    background: linear-gradient(135deg, #003366 0%, #001a33 100%);
    color: #fff;
    padding: 60px 40px;
    text-align: center;
    border-radius: 12px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,51,102,0.2);
}
.hero p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
}

/* Enhanced Buttons */
.btn {
    display: inline-block;
    background: linear-gradient(90deg, #00509e 0%, #007bff 100%);
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    margin-top: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 15px rgba(0,80,158,0.4);
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,80,158,0.6);
}

/* Enhanced Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    border-top: 5px solid #00ccff; /* Cyan accent */
    border-left: none; /* Changed from previous */
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}
.card h3 {
    margin-top: 0;
    color: #003366;
}
.card a {
    color: #00509e;
    text-decoration: none;
    font-weight: 700;
    display: inline-block;
    margin-top: 10px;
}

/* Footer */
footer {
    background-color: #002244;
    color: #ccc;
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
}
footer a {
    color: #00ccff;
    text-decoration: none;
    transition: color 0.2s ease;
}
footer a:hover {
    color: #fff;
}

/* Ad Container */
.ad-container-leaderboard {
  min-height: 90px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 40px 0;
  background-color: #f9f9f9;
  border-radius: 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .ad-container-leaderboard {
    min-height: 250px;
  }
  .header-container {
      flex-direction: column;
      text-align: center;
  }
  nav ul {
      margin-top: 20px;
      flex-direction: column;
      align-items: center;
  }
  nav ul li {
      margin: 10px 0;
  }
  .hero {
      padding: 40px 20px;
  }
  h1 { font-size: 2rem; }
}