/* --- Homepage block 1 --- */
.hero-section {
        position: relative;
        padding: 100px 0;
        background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('/img/under-airplane-777-1.jpg');
        background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), image-set(
            url('/img/under-airplane-777-1.webp') type('image/webp'),
            url('/img/under-airplane-777-1.jpg') type('image/jpeg')
        );
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        color: #fff;
    }

    .hero-title {
        font-size: 48px;
        font-weight: 700;
        margin-bottom: 20px;
        text-shadow: 2px 2px 8px rgba(0,0,0,0.9);
        color: #fff;
    }

    .hero-subtitle {
        font-size: 20px;
        margin-bottom: 40px;
        text-shadow: 2px 2px 6px rgba(0,0,0,0.9);
        color: #fff;
    }

    .search-container {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 10px;
        backdrop-filter: blur(5px);
        max-width: 900px;
        margin: 0 auto;
    }

    .search-container select,
    .search-container .btn {
        height: 50px;
        font-size: 16px;
    }

    .search-container .btn-primary {
        background-color: #0088cc;
        border-color: #0088cc;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .search-container .btn-primary:hover {
        background-color: #006da3;
        border-color: #006da3;
    }

    @media (max-width: 767px) {
        .hero-section {
            padding: 60px 0;
        }

        .hero-title {
            font-size: 32px;
        }

        .hero-subtitle {
            font-size: 18px;
        }

        .search-container {
            padding: 20px;
        }

        .search-container select,
        .search-container .btn {
            margin-bottom: 10px;
        }
    }

    /* Section Header Styles */
    .section-header {
        text-align: center;
        margin-bottom: 60px;
    }

    .section-title {
        font-size: 2.5rem;
        font-weight: 800;
        color: #1a365d;
        margin-bottom: 25px;
        text-transform: uppercase;
        letter-spacing: 1px;
        text-align: center;
        position: relative;
        padding-bottom: 20px;
    }

    .section-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 100px;
        height: 3px;
        background: linear-gradient(90deg, #0088cc, #00aaff);
        border-radius: 3px;
    }

    .section-title strong {
        color: #0088cc;
        position: relative;
        z-index: 1;
    }

    .section-description {
        font-size: 1.3rem;
        line-height: 1.8;
        color: #4a5568;
        max-width: 900px;
        margin: 0 auto 50px;
        padding: 0 20px;
        text-align: center;
    }

    @media (max-width: 991px) {
        .section-title {
            font-size: 2.2rem;
        }
        
        .section-description {
            font-size: 1.2rem;
            padding: 0 30px;
        }
    }

    @media (max-width: 767px) {
        .section-title {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }
        
        .section-description {
            font-size: 1.1rem;
            line-height: 1.7;
            padding: 0 20px;
            margin-bottom: 40px;
        }
    }

    /* Section Separator Styles */
    .section-separator {
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 60px 0 40px;
        padding: 0 20px;
    }

    .separator-line {
        height: 2px;
        flex-grow: 1;
        background: linear-gradient(90deg, 
            rgba(0, 136, 204, 0.1) 0%,
            rgba(0, 136, 204, 0.3) 50%,
            rgba(0, 136, 204, 0.1) 100%
        );
        max-width: 300px;
    }

    .separator-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 60px;
        height: 60px;
        background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        border-radius: 50%;
        margin: 0 30px;
        box-shadow: 0 4px 15px -5px rgba(0, 136, 204, 0.2);
        border: 2px solid rgba(0, 136, 204, 0.1);
        position: relative;
        transition: all 0.3s ease;
    }

    .separator-icon:hover {
        transform: translateY(-2px) rotate(15deg);
        box-shadow: 0 6px 20px -5px rgba(0, 136, 204, 0.3);
        border-color: rgba(0, 136, 204, 0.2);
    }

    .separator-icon i {
        font-size: 24px;
        color: #0088cc;
        transition: all 0.3s ease;
    }

    .separator-icon:hover i {
        color: #006da3;
        transform: scale(1.1);
    }

    @media (max-width: 767px) {
        .section-separator {
            margin: 40px 0 30px;
        }

        .separator-line {
            max-width: 120px;
        }

        .separator-icon {
            width: 50px;
            height: 50px;
            margin: 0 20px;
        }

        .separator-icon i {
            font-size: 20px;
        }
    }

    /* Tabs Centering and Styling */
    .tabs {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .nav-tabs {
        display: flex;
        justify-content: center;
        border-bottom: 2px solid rgba(0, 136, 204, 0.1);
        margin-bottom: 30px;
        flex-wrap: wrap;
    }

    .nav-tabs > li {
        float: none;
        margin: 0 2px;
    }

    .nav-tabs > li > a {
        padding: 12px 25px;
        font-weight: 600;
        color: #2d3748;
        border-radius: 8px 8px 0 0;
        transition: all 0.3s ease;
    }

    .nav-tabs > li > a:hover {
        background: rgba(0, 136, 204, 0.05);
        border-color: transparent;
        color: #0088cc;
    }

    .nav-tabs > li.active > a,
    .nav-tabs > li.active > a:hover,
    .nav-tabs > li.active > a:focus {
        color: #0088cc;
        background: #ffffff;
        border-color: rgba(0, 136, 204, 0.2);
        border-bottom-color: transparent;
    }

    .tab-content {
        background: #ffffff;
        border-radius: 0 0 8px 8px;
        padding: 30px;
        text-align: center;
    }

    .tab-content .lead {
        font-size: 1.5rem;
        color: #1a365d;
        font-weight: 600;
        margin-bottom: 25px;
    }

    .tab-content .row {
        justify-content: center;
    }

    .tab-content .col-md-2 {
        text-align: center;
    }

    .tab-content li {
        list-style: none;
        margin-bottom: 15px;
    }

    .tab-content li a {
        color: #2d3748;
        font-size: 1.1rem;
        transition: all 0.3s ease;
        text-decoration: none;
        padding: 8px 15px;
        border-radius: 6px;
        display: inline-block;
    }

    .tab-content li a:hover {
        color: #0088cc;
        background: rgba(0, 136, 204, 0.05);
        transform: translateY(-2px);
    }

    .call-to-action-content {
        text-align: center;
        margin-bottom: 30px;
    }

    .call-to-action-content h4 {
        color: #2d3748;
        font-size: 1.25rem;
        margin-bottom: 15px;
    }

    .alternative-font {
        color: #0088cc;
        font-weight: 600;
    }

    @media (max-width: 767px) {
        .nav-tabs {
            padding: 0 10px;
        }

        .nav-tabs > li > a {
            padding: 10px 15px;
            font-size: 0.9rem;
        }

        .tab-content {
            padding: 20px 15px;
        }

        .tab-content .lead {
            font-size: 1.3rem;
        }

        .tab-content li a {
            font-size: 1rem;
            padding: 6px 12px;
        }
    }

/* --- Homepage block 2 --- */
/* Feature Box Styles */
  .feature-box {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 16px;
    padding: 35px 30px;
    margin-bottom: 30px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.15);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    border: 1px solid rgba(0, 136, 204, 0.1);
    position: relative;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  .feature-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .feature-box:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px -20px rgba(0, 136, 204, 0.25);
    background: linear-gradient(165deg, #ffffff 0%, #f0f7fc 100%);
  }

  .feature-box:hover::before {
    opacity: 1;
  }

  .feature-box h4 {
    color: #1a365d;
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0 0 25px 0;
    line-height: 1.3;
    width: 100%;
    text-align: center;
    padding: 0 15px 20px;
    border-bottom: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    text-shadow: 1px 1px 0px rgba(255, 255, 255, 0.5);
  }

  .feature-box h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border-radius: 3px;
  }

  .feature-box h4 a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    width: 100%;
    background: linear-gradient(90deg, #1a365d, #0088cc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 100%;
    background-position: 100%;
    font-family: 'Open Sans', sans-serif;
    font-weight: 800;
    letter-spacing: 0.5px;
  }

  .feature-box h4 a:hover {
    transform: translateY(-2px);
    background-position: 0%;
    text-decoration: none;
  }

  .feature-box p {
    color: #2d3748;
    font-size: 1.25rem;
    line-height: 1.8;
    margin: 25px 0;
    padding: 20px 25px;
    width: 100%;
    text-align: center;
    flex-grow: 1;
    background: linear-gradient(to bottom, rgba(255,255,255,0.9), rgba(248,249,250,0.9));
    border-radius: 10px;
    box-shadow: 0 2px 15px -5px rgba(0,0,0,0.1);
    position: relative;
    font-weight: 500;
    letter-spacing: 0.2px;
  }

  .feature-box p::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border-radius: 3px;
  }

  .feature-box img {
    width: 100%;
    max-width: 300px;
    height: 200px;
    border-radius: 12px;
    margin: 15px 0;
    transition: all 0.4s ease;
    object-fit: cover;
    box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.2);
  }

  .feature-box:hover img {
    transform: scale(1.05);
    box-shadow: 0 15px 30px -15px rgba(0, 0, 0, 0.3);
  }

  @media (max-width: 991px) {
    .feature-box {
      padding: 30px 25px;
    }
    
    .feature-box h4 {
      font-size: 1.5rem;
      padding: 0 10px 15px;
    }
    
    .feature-box p {
      font-size: 1.15rem;
      padding: 15px 20px;
      margin: 20px 0;
    }
    
    .feature-box img {
      height: 180px;
    }
  }

  @media (max-width: 767px) {
    .feature-box {
      padding: 25px 20px;
    }
    
    .feature-box h4 {
      font-size: 1.3rem;
      padding: 0 8px 12px;
    }
    
    .feature-box p {
      font-size: 1.1rem;
      padding: 12px 15px;
      margin: 15px 0;
    }
    
    .feature-box img {
      height: 160px;
    }
  }

  /* Accessibility Improvements */
  .feature-box a:focus {
    outline: 3px solid #0088cc;
    outline-offset: 2px;
  }

  /* Text Selection Enhancement */
  .feature-box p::selection {
    background: rgba(0, 136, 204, 0.2);
    color: #1a365d;
  }

  /* Description Box Hover Effect */
  .feature-box:hover p {
    background: linear-gradient(to bottom, rgba(255,255,255,1), rgba(240,247,252,0.9));
    box-shadow: 0 4px 20px -8px rgba(0,0,0,0.15);
    transform: translateY(-2px);
    transition: all 0.3s ease;
  }

  /* Row Layout Improvements */
  .row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
    gap: 30px 0;
  }

  .col-sm-4 {
    padding-right: 15px;
    padding-left: 15px;
    display: flex;
    flex-direction: column;
  }

/* --- Homepage block 3 --- */
/* Featured Blog Styles - Improved */
  .featured-blog {
    max-width: 500px;
    margin: 60px auto;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
  }

  .featured-blog:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.1);
  }

  .featured-blog img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    max-width: 500px;
    margin: 0 auto;
  }

  .featured-blog-content {
    padding: 30px;
    text-align: center;
  }

  .featured-blog-content h2 {
    color: #2c3e50;
    font-size: clamp(1.5rem, 4vw, 1.75rem);
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.4;
  }

  .featured-blog-content p {
    color: #6c757d;
    font-size: clamp(1rem, 2vw, 1.1rem);
    line-height: 1.6;
    margin-bottom: 25px;
    padding: 0 15px;
  }

  .featured-blog-content .btn {
    font-weight: 600;
    padding: 12px 28px;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .featured-blog-content .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,136,204,0.2);
  }

  /* Quiz Section Styles - Enhanced */
  .quiz-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: clamp(40px, 8vw, 80px) 20px;
    position: relative;
    overflow: hidden;
  }

  .quiz-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
  }

  .quiz-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 16px;
    padding: 35px 30px;
    margin-bottom: 30px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.15);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid rgba(0, 136, 204, 0.1);
    position: relative;
    overflow: hidden;
  }

  .quiz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .quiz-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px -20px rgba(0, 136, 204, 0.25);
    background: linear-gradient(165deg, #ffffff 0%, #f0f7fc 100%);
  }

  .quiz-card:hover::before {
    opacity: 1;
  }

  .quiz-card h4 {
    color: #1a365d;
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0 0 25px 0;
    line-height: 1.3;
    width: 100%;
    text-align: center;
    padding: 0 15px 20px;
    border-bottom: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    text-shadow: 1px 1px 0px rgba(255, 255, 255, 0.5);
  }

  .quiz-card h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border-radius: 3px;
  }

  .quiz-card p {
    color: #2d3748;
    font-size: 1.25rem;
    line-height: 1.8;
    margin: 25px 0;
    padding: 20px 25px;
    width: 100%;
    text-align: center;
    flex-grow: 1;
    background: linear-gradient(to bottom, rgba(255,255,255,0.9), rgba(248,249,250,0.9));
    border-radius: 10px;
    box-shadow: 0 2px 15px -5px rgba(0,0,0,0.1);
    position: relative;
    font-weight: 500;
    letter-spacing: 0.2px;
  }

  .quiz-card p::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border-radius: 3px;
  }

  .quiz-card .btn {
    padding: 14px 32px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border: none;
    color: white;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
  }

  .quiz-card .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #006da3, #0088cc);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
  }

  .quiz-card .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,136,204,0.3);
  }

  .quiz-card .btn:hover::before {
    opacity: 1;
  }

  .quiz-card .btn:focus {
    outline: 3px solid rgba(0,136,204,0.3);
    outline-offset: 2px;
  }

  @media (max-width: 991px) {
    .quiz-card {
      padding: 30px 25px;
    }
    
    .quiz-card h4 {
      font-size: 1.5rem;
      padding: 0 10px 15px;
    }
    
    .quiz-card p {
      font-size: 1.15rem;
      padding: 15px 20px;
      margin: 20px 0;
    }
    
    .quiz-card .btn {
      padding: 12px 28px;
      font-size: 1rem;
    }
  }

  @media (max-width: 767px) {
    .quiz-card {
      padding: 25px 20px;
    }
    
    .quiz-card h4 {
      font-size: 1.3rem;
      padding: 0 8px 12px;
    }
    
    .quiz-card p {
      font-size: 1.1rem;
      padding: 12px 15px;
      margin: 15px 0;
    }
    
    .quiz-card .btn {
      padding: 10px 24px;
      font-size: 0.95rem;
    }
  }

/* --- Homepage block 4 --- */
/* Blog Section Styles - Consolidated and Improved */
  .center-wrapper {
    display: flex;
    justify-content: center;
    padding: 60px 20px;
    background: #f8f9fa !important;
    width: 100%;
    box-shadow: none !important;
    border: none !important;
  }
  
  .blog-section {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 40px;
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
  }
  
  .blog-section h2 {
    text-align: center;
    color: #2c3e50;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 15px;
  }
  
  .blog-section .intro-text {
    text-align: center;
    color: #6c757d;
    font-size: clamp(1rem, 2vw, 1.1rem);
    margin-bottom: 50px;
    padding: 0 15px;
  }
  
  .blog-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
    padding: 0 15px;
    background: transparent;
  }
  
  .blog-column {
    padding: 25px;
    border-radius: 12px;
    transition: all 0.3s ease;
    height: 100%;
    background: #fff;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
  }
  
  .blog-column:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.1);
  }
  
  .blog-column h3 {
    color: #1a365d;
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 22px;
    padding-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: none;
    position: relative;
    text-align: center;
  }
  
  .blog-column h3::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #0088cc, #00aaff);
    border-radius: 2px;
    margin: 8px auto 0;
  }
  
  .blog-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .blog-column ul li {
    margin-bottom: 20px;
  }
  
  .blog-column ul li a {
    color: #0088cc;
    font-weight: 800;
    font-size: 1.18rem;
    text-decoration: none;
    transition: color 0.2s, border-bottom 0.2s;
    border-bottom: 2px solid transparent;
    display: inline-block;
    margin-bottom: 2px;
  }
  
  .blog-column ul li a:hover {
    color: #005580;
    border-bottom: 2px solid #0088cc;
    text-decoration: none;
  }
  
  .blog-column .description {
    color: #4a5568;
    font-size: 1.05rem;
    margin-top: 0;
    margin-bottom: 0;
    line-height: 1.6;
    display: block;
  }
  
  .newsletter-signup {
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    margin: 40px 15px 0;
    background: #1a1a1a;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  }
  
  .newsletter-signup h4 {
    color: #ffffff;
    font-size: clamp(1.2rem, 3vw, 1.4rem);
    font-weight: 600;
    margin-bottom: 15px;
  }
  
  .newsletter-signup p {
    color: #cccccc;
    font-size: clamp(1rem, 2vw, 1.1rem);
    margin-bottom: 20px;
  }
  
  .newsletter-signup .btn {
    padding: 12px 28px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    background: #0088cc;
    border: 2px solid #0088cc;
  }
  
  .newsletter-signup .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,136,204,0.4);
    background: #006da3;
    border-color: #006da3;
  }
  
  @media (max-width: 768px) {
    .center-wrapper {
        padding: 40px 15px;
    }
    
    .blog-columns {
        gap: 20px;
    }
    
    .blog-column {
        padding: 20px;
    }
  }
  
  @media (max-width: 576px) {
    .center-wrapper {
        padding: 30px 10px;
    }
    
    .blog-columns {
        gap: 15px;
    }
    
    .blog-column {
        padding: 15px;
    }
  }