:root {
  --primary: #003366;
  --secondary: #0a58ca;
  --accent: #e8f1ff;
  --light: #f4f7fb;
  --dark: #222;
  --border-radius: 14px;
}


body {
  font-family: "Segoe UI", Arial, sans-serif;
  background-color: var(--light);
  color: var(--dark);
  line-height: 1.7;
}

.section {
  margin: 70px auto;
}

.section-title {
  text-align: center;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 30px;
  position: relative;
}

.section-title::after {
  content: "";
  width: 80px;
  height: 4px;
  background: var(--secondary);
  display: block;
  margin: 10px auto 0;
  border-radius: 5px;
}


.navbar {
  background: linear-gradient(90deg, #f8f8f6, #7ac3ee);
  box-shadow: 0 6px 18px rgba(91, 186, 241, 0.15);
  padding: 10px 20px;
}

.navbar-brand img {
  height: 65px;
}

.nav-link {
  font-weight: 600;
  color: var(--primary) !important;
  margin-left: 18px;
  transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--secondary) !important;
}

.dropdown-menu {
  border-radius: var(--border-radius);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}


.hero {
  background:
    linear-gradient(
      rgba(0, 51, 102, 0.85),
      rgba(0, 51, 102, 0.85)
    ),
    url("CS_BG.jpg");  

  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
  padding: 120px 20px;
  text-align: center;
}


.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
}

.hero h2 {
  font-size: 1.6rem;
  margin-top: 10px;
  font-weight: 500;
}

.hero p {
  font-size: 1.1rem;
  margin-top: 15px;
  opacity: 0.95;
}



.custom-card {
  background: #ffffff;
  border: none;
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* .custom-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.12); */


.custom-card p {
  text-align: justify;
  margin-bottom: 12px;
}

.custom-card ul {
  padding-left: 20px;
  margin-top: 15px;
}

.custom-card ul li {
  margin-bottom: 8px;
}


table {
  margin-top: 15px;
}

.table {
  background: #ffffff;
}

.table thead th {
  background: var(--accent);
  color: var(--primary);
  text-align: center;
  vertical-align: middle;
  font-weight: 700;
}

.table tbody td {
  vertical-align: top;
  padding: 12px;
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: #f8fbff;
}


a {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}


.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.popup-content img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: var(--border-radius);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}


footer {
  background: var(--primary);
  color: #ffffff;
  text-align: center;
  padding: 20px;
  margin-top: 60px;
  font-size: 0.95rem;
}


@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .hero h2 {
    font-size: 1.2rem;
  }

  .nav-link {
    margin-left: 0;
    margin-top: 10px;
  }

  .custom-card {
    padding: 22px;
  }
}


.container {
  max-width: 1200px;
}

@media (max-width: 360px) {
  body {
    font-size: 14px;
  }
}


.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  justify-content: center;
  align-items: center;
  z-index: 9999;
}


.popup-content {
  position: relative;
}

.popup-content img {
  max-width: 100%;
  max-height: 100vh;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}