.large-screen {
    display: none; /* Hidden by default */
}


@media (min-width: 768px) {
    .large-screen {
        display: block; /* Show when viewport is at least 768px */
    }
    .small-screen {
        display: none; /* Hide small-screen content */
    }
}

body {
    background-color: #08121f;
    color: #ffffff;
    font-family: Verdana, sans-serif;
    margin: 0;
    padding: 0;
    text-align: left;
    line-height: 1.6;
}
.navbar {
    background-color: #102a43;
    overflow: hidden;
    display: flex;
    margin: auto;
    justify-content: space-around;
    padding: 10px 20px;
    max-width: 900px;
}
.navbar a {
    color: white;
    text-decoration: none;
    padding: 20px 20px;
    margin: -20px;
    display: block;
}
.navbar a:hover {
    background-color: #1e3a5f;
    text-decoration: none;
}

.container {
    background-color: #0a1a2a;
    max-width: 900px;
    margin: auto;
    padding: 20px;
    box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.5);
}

header, footer {
    background-color: #102a44;
    padding: 20px;
    text-align: center;
}

header h1, footer p {
    margin: 0;
}

section {
    padding: 40px 20px;
    border-bottom: 1px solid #1c3b5f;
    max-width: 800px;
    margin: auto;
}

h1, h2, h3, h4, h5, h6 {
    color: #4a90e2;
    text-underline-offset: 10px;
    text-decoration: underline;
}

a {
    color: #4a90e2;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul, ol {
    margin-left: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #4a90e2;
}

th, td {
    padding: 10px;
    text-align: left;
}

th {
    background-color: #1c3b5f;
}



.thumbnail-container {
    display: flex;
    gap: 30px; 
    justify-content: center; 
    align-items: center; 
}

.thumbnail {
    /* width: 200px;
    height: 200px; */
    max-width: 100%;
    max-height: 100%;
    cursor: pointer;
    border-radius: 10px; 
}

.preview-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); 
    justify-content: center;
    align-items: center;
    z-index: 1000; 
}


#preview-image {
    max-width: 80%;
    max-height: 80%;
}

#close-preview {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: white;
    border: none;
    cursor: pointer;
}


 /* Button Styles */
 .popup-button {
    background-color: #3498db;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: background 0.3s;
  }

  .popup-button:hover {
    background-color: #2980b9;
  }

  /* Overlay Background */
  .popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
  }

  /* Popup Container */
  .popup-container {
    background-color: #2c2c2c;
    padding: 50px 50px;
    text-align: center;
    color: #f4f4f4;
    border-radius: 16px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    width: 300px;
  }

  .popup-container h2 {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #f4f4f4;
  }

  .popup-container p {
    font-size: 18px;
    margin-bottom: 20px;
    color: #ddd;
    line-height: 1.6;
  }

  /* Close Button */
  .popup-close {
    background-color: #e74c3c;
    color: #fff;
    border: none;
    padding: 10px 15px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    transition: background 0.3s;
  }

  .popup-close:hover {
    background-color: #c0392b;
  }

  .contact-container {
    background-color: #06121d;
    border: none;
    border-radius: 5px;
    width: 90%;
    max-width: 500px;
    text-align: center;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}