body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #FF6B35 0%, #FFA726 100%);
    color: #333;
}
.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}
.navbar.fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
body.navbar-fixed .introduction {
    padding-top: 80px; /* Adjust based on navbar height */
}
.navbar-brand img {
    height: 65px;
    width: auto;
}
.navbar-nav .nav-link {
    font-weight: 500;
    border-radius: 20px;
    padding: 8px 16px;
    margin: 0 5px;
    transition: all 0.3s;
    background: transparent;
    border: 1px solid #E65100;
    color: #E65100;
}
.navbar-nav .nav-link:hover {
    background: #E65100;
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}
.social-icons a {
    color: #E65100;
    font-size: 1.2rem;
    transition: color 0.3s;
    margin-left: 10px;
}
.social-icons a:hover {
    color: #FF6B35;
}
.introduction {
    text-align: center;
    padding: 50px 20px;
    color: white;
    transition: padding-top 0.3s ease;
}
.introduction h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #FFFFFF;
}
.introduction p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}
.tutorial-section {
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    margin: 10px;
    text-align: center;
}
.tutorial-section .carousel {
    max-width: 800px;
    margin: 0 auto;
}
.hero-section {
    display: flex;
    height: 60vh;
    align-items: center;
    padding: 0;
}
.slider, .video-player {
    flex: 1;
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    margin: 10px;
}
.section-title {
    text-align: left;
    font-size: 1.8rem; /* Slightly larger for emphasis */
    font-weight: 700; /* Bolder */
    color: #E65100;
    margin-bottom: 15px;
    text-transform: uppercase; /* Modern uppercase */
    letter-spacing: 2px; /* Added spacing */
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2); /* Subtle shadow for depth */
    border-bottom: 2px solid #FF6B35; /* Modern underline accent */
    padding-bottom: 5px;
}
.carousel-item img {
    height: 315px; /* Fixed height to match video player */
    object-fit: fill; /* Ensures images fill the space without distortion */
    width: 100%;
}
.video-player video {
    width: 100%;
    height: 315px; /* Set to match the slider image height */
    object-fit: fill; /* Ensures video fills the space without distortion */
    border-radius: 10px; /* Match the container's border-radius */
}
.floating-qr {
    position: fixed;
    right: 20px;
    top: 25%;
    transform: translateY(-50%);
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    text-align: center; /* Center the text */
}
.floating-qr img {
    width: 100px;
    height: 100px;
    display: block;
    margin: 0 auto; /* Center the image */
}
.floating-qr .qr-text {
    font-size: 0.9rem;
    font-weight: bold;
    color: #E65100;
    margin-top: 5px;
}
.floating-qr:hover {
    transform: translateY(-50%) scale(1.05);
}
.footer {
    background: #343a40;
    color: white;
    padding: 40px 0;
    text-align: center;
}
.btn-custom {
    margin: 0 10px;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s;
    font-size: 1rem;
    background: #FF6B35;
    border: none;
}
.btn-custom:hover {
    background: #E65100;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}
/* Modal custom styles */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.modal-header {
    background: linear-gradient(135deg, #FF6B35 0%, #FFA726 100%);
    color: white;
    border-bottom: none;
    border-radius: 15px 15px 0 0;
}
.modal-body {
    text-align: center;
    padding: 30px;
}
.modal-body img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 20px;
}
.modal-body p {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 20px;
}
.modal-footer {
    border-top: none;
    justify-content: center;
}
/* Mobile-specific styles */
@media (max-width: 768px) {
    .navbar-brand img {
        height: 30px;
    }
    .introduction h1 {
        font-size: 2.5rem;
    }
    .introduction p {
        font-size: 1rem;
    }
    .tutorial-section {
        padding: 15px;
        margin: 10px 0;
    }
    .tutorial-section .carousel {
        max-width: 100%;
    }
    .hero-section {
        flex-direction: column;
        height: auto;
        padding: 20px 0;
    }
    .slider, .video-player {
        flex: none;
        width: 100%;
        margin: 10px 0;
        padding: 15px;
    }
    .section-title {
        font-size: 1.5rem; /* Adjusted for mobile */
        letter-spacing: 1.5px; /* Slightly less spacing on mobile */
    }
    .video-player video {
        height: 250px; /* Adjusted for mobile to match carousel */
    }
    .carousel-item img {
        height: 250px; /* Adjusted for mobile to match video */
    }
    .floating-qr {
        /* Moved to bottom right for mobile */
        bottom: 20px;
        right: 10px;
        top: auto; /* Remove top positioning */
        transform: none; /* Remove vertical centering transform */
    }
    .floating-qr img {
        width: 80px; /* Smaller size for mobile */
        height: 80px;
    }
    .floating-qr .qr-text {
        font-size: 0.8rem; /* Smaller text for mobile */
    }
    .floating-qr:hover {
        transform: scale(1.05); /* Updated hover to only scale */
    }
    .navbar-nav {
        flex-direction: column;
        align-items: center;
        margin-top: 10px;
    }
    .navbar-nav .nav-link {
        margin: 5px 0;
        width: 100%;
        text-align: center;
    }
    .social-icons {
        margin-top: 10px;
        justify-content: center;
    }
    .footer {
        padding: 30px 0;
    }
    .btn-custom {
        margin: 5px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    .modal-body {
        padding: 20px;
    }
    .modal-body img {
        max-width: 80%;
    }
}
@media (max-width: 576px) {
    .introduction h1 {
        font-size: 2rem;
    }
    .introduction p {
        font-size: 0.9rem;
    }
    .tutorial-section {
        padding: 10px;
    }
    .hero-section {
        padding: 10px 0;
    }
    .slider, .video-player {
        padding: 10px;
    }
    .section-title {
        font-size: 1.3rem; /* Even smaller for very small screens */
        letter-spacing: 1px; /* Reduced spacing */
    }