/* General Body Styles */
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

/* Header */
header {
    background-color: #0056b3;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-content h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0;
}

.header-logo-inline {
    height: 1.5em; /* Scales with font size */
    margin: 0 0.5em;
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 20px;
    display: grid;
    gap: 2rem;
}

/* Sections */
section {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

section h2 {
    color: #0056b3;
    border-bottom: 2px solid #f4f4f4;
    padding-bottom: 0.5rem;
    margin-top: 0;
}

/* Containers for content */
#poster-container,
#presentation-container,
#video-container,
#pdf-container {
    margin-top: 1rem;
    min-height: 300px; /* Placeholder height */
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px dashed #ddd;
    border-radius: 5px;
    background-color: #fafafa;
}

/* Footer */
footer {
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
    background-color: #333;
    color: #fff;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1, .header-content h1 {
        font-size: 1.5rem;
    }
    main {
        margin: 1rem auto;
        padding: 0 10px;
    }
    #qr-code-container img {
        max-width: 100%;
        height: auto;
    }
}

/* PDF Viewer */
.pdf-viewer {
    margin-top: 2rem;
    border-top: 1px solid #eee;
    padding-top: 1.5rem;
}
.pdf-viewer h3 {
    margin-top: 0;
}
.pdf-viewer a {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: #0056b3;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}
.pdf-viewer a:hover {
    background-color: #004494;
}

/* Presentation Viewer */
.presentation-viewer {
    margin-top: 2rem;
}
.presentation-viewer h3 {
    margin-top: 0;
    text-align: center;
}

.slideshow-container {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
}

.slide-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.prev-btn, .next-btn {
    background-color: #0056b3;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.3s;
}

.prev-btn:hover, .next-btn:hover {
    background-color: #004494;
}

.slide-counter {
    font-size: 1.1rem;
    font-weight: bold;
    color: #333;
}

.slides-wrapper {
    text-align: center;
    background-color: #fafafa;
    padding: 1rem;
    border-radius: 5px;
    border: 1px solid #ddd;
}

.slides-wrapper img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s;
}

.slides-wrapper img:hover {
    transform: scale(1.02);
}

.download-section {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.download-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #28a745;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #218838;
}

.download-btn i {
    margin-right: 0.5rem;
}

/* Responsive design for presentation viewer */
@media (max-width: 768px) {
    .slide-controls {
        flex-direction: column;
        gap: 0.5rem;
    }

    .prev-btn, .next-btn {
        width: 100%;
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .slide-counter {
        order: -1;
        margin-bottom: 0.5rem;
    }
}

/* Video Links */
.video-links {
    list-style-type: '🔗';
    padding-left: 2rem;
}
.video-links li {
    margin-bottom: 0.5rem;
}

/* Lightbox for image zoom */
#lightbox {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
}

#lightbox.visible {
    display: flex; /* Make visible */
}

#lightbox-image {
    max-width: 90%;
    max-height: 90%;
    border-radius: 5px;
}

/* Adjusting iframe containers */
#presentation-container, .video-container {
    border: none;
    padding: 0;
    background-color: transparent;
    min-height: auto; /* Reset min-height */
}

/* Responsive Video Container */
.video-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    margin-bottom: 2rem;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

#play-btn {
    display: block;
    margin: -1rem auto 2rem auto;
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
    font-weight: bold;
    color: #fff;
    background-color: #c00;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#play-btn:hover {
    background-color: #a00;
}

/* Footer link */
footer a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
footer a:hover {
    text-decoration: underline;
}

/* More Info Section */
#moreinfo {
    text-align: center;
    background-color: #f8f9fa;
}

#moreinfo h2 {
    margin-bottom: 1.5rem;
}

.social-links a {
    font-size: 2.5rem;
    margin: 0 15px;
    color: #495057;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #007bff; /* A generic blue, can be customized */
}