/* Media Discovery Page Styles */

.discover-header {
    text-align: center;
    padding: 2rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.discover-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.discover-subtitle {
    color: #666;
    font-size: 1.1rem;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    text-align: center;
}

.no-media {
    text-align: center;
    padding: 3rem 1rem;
    color: #666;
}

.discover-footer {
    text-align: center;
    padding: 2rem 1rem;
    color: #666;
}

.media-count {
    font-size: 0.95rem;
}

/* Masonry Grid - Prevent reflow on image load */
.masonry-image-container {
    position: relative;
    width: 100%;
    background: linear-gradient(135deg,
        #667eea 0%,
        #764ba2 25%,
        #f093fb 50%,
        #4facfe 75%,
        #00f2fe 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    overflow: hidden;
}

/* Containers with known dimensions use aspect ratio padding */
.masonry-image-container.has-dimensions {
    padding-bottom: 75%; /* Overridden by inline style */
}

/* Containers without dimensions stretch naturally with content */
.masonry-image-container:not(.has-dimensions) {
    min-height: 200px;
}

.masonry-image-container:not(.has-dimensions) img {
    position: relative;
    width: 100%;
    height: auto;
    display: block;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.masonry-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.masonry-image.loaded {
    opacity: 1;
}

/* Video placeholder styling */
.video-no-preview {
    position: relative;
    width: 100%;
    padding-bottom: 75%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.video-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

/* Infinite Scroll Loader */
.infinite-scroll-loader {
    text-align: center;
    padding: 3rem 1rem;
    color: #666;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Topic Filter Sidebar */
.topic-filter {
    padding: 1rem;
}

.aside-heading {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: #333;
}

.topic-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.topic-item {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: #f8f9fa;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.topic-item:hover {
    background: #e9ecef;
    border-left-color: #007bff;
    transform: translateX(4px);
}

.topic-item.active {
    background: #007bff;
    color: white;
    border-left-color: #0056b3;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .discover-header h1 {
        font-size: 2rem;
    }

    .topic-filter {
        padding: 0.5rem;
    }

    .topic-item {
        padding: 0.6rem 0.8rem;
        font-size: 0.9rem;
    }
}