/**
 * Blog Feed Component
 *
 * Responsive breakpoints (from design-system.css):
 * - Mobile (xs): 480px and below
 * - Tablet (md): 768px and below
 * - Desktop (lg): 1024px and above
 */

/* Blog Feed Section */
.blog-feed {
    min-height: 100vh;
    padding: 6rem 2rem;
    background: var(--gradient-bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-feed__container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.blog-feed__heading {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.blog-feed__heading-underline {
    position: absolute;
    bottom: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

/* Filters */
.blog-feed__filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.blog-feed__filter-tag {
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-tertiary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 24px;
    cursor: pointer;
    transition: var(--transition-base);
}

.blog-feed__filter-tag:hover {
    color: var(--color-text-secondary);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-accent-blue);
}

.blog-feed__filter-tag--active {
    color: var(--color-text-primary);
    background: var(--gradient-hero);
    border-color: transparent;
    box-shadow: var(--shadow-accent);
}

.blog-feed__filter-tag--active:hover {
    box-shadow: 0 0 25px rgba(102, 126, 234, 0.4), 0 0 50px rgba(118, 75, 162, 0.3);
}

.blog-feed__posts {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Blog Post Card */
.blog-post-card {
    background: rgba(255, 255, 255, 0.02);
    border: var(--border-accent);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.blog-post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(102, 126, 234, 0.1), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.blog-post-card:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-accent);
}

.blog-post-card:hover::before {
    opacity: 1;
}

.blog-post-card__content {
    position: relative;
    z-index: 1;
}

.blog-post-card__date {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-post-card__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 1rem;
    line-height: 1.3;
}

.blog-post-card__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 100%;
    background-position: 100% 0;
}

.blog-post-card:hover .blog-post-card__link {
    background-position: 0 0;
}

.blog-post-card__excerpt {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-tertiary);
    margin: 0 0 1.5rem;
}

.blog-post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.blog-post-card__tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-accent-blue);
    transition: var(--transition-base);
}

.blog-post-card:hover .blog-post-card__tag {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--color-accent-blue);
}

/* Load More Button */
.blog-feed__load-more-container {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.blog-feed__load-more {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    background: var(--gradient-hero);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow-accent);
    position: relative;
    overflow: hidden;
}

.blog-feed__load-more::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.blog-feed__load-more:hover {
    box-shadow: 0 0 25px rgba(102, 126, 234, 0.4), 0 0 50px rgba(118, 75, 162, 0.3);
}

.blog-feed__load-more:hover::before {
    left: 100%;
}

.blog-feed__load-more:active {
}

/* HTMX Loading State */
.blog-feed__load-more.htmx-request {
    opacity: 0.7;
    pointer-events: none;
}

.blog-feed__load-more.htmx-request::after {
    content: '...';
    margin-left: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .blog-feed {
        padding: 4rem 1.5rem;
    }

    .blog-feed__heading {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .blog-feed__filters {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }

    .blog-feed__filter-tag {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .blog-post-card {
        padding: 1.5rem;
    }

    .blog-post-card__title {
        font-size: 1.5rem;
    }

    .blog-post-card__excerpt {
        font-size: 1rem;
    }

    .blog-feed__load-more {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .blog-feed {
        padding: 3rem 1rem;
    }

    .blog-feed__heading {
        font-size: 1.75rem;
    }

    .blog-post-card {
        padding: 1.25rem;
    }

    .blog-post-card__title {
        font-size: 1.25rem;
    }

    .blog-post-card__tags {
        gap: 0.375rem;
    }

    .blog-post-card__tag {
        padding: 0.25rem 0.625rem;
        font-size: 0.75rem;
    }
}