/**
 * Article Hero Component Styles
 * Featured article display with gradient overlay and secondary featured grid
 */

.article-hero {
    margin-bottom: var(--spacing-12);
    width: 100%;
}

/* Primary Featured Article */
.article-hero__primary {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* Desktop: 60/40 split layout */
@media (min-width: 768px) {
    .article-hero__primary {
        grid-template-columns: 60% 40%;
        min-height: 500px;
    }
}

/* Image Container */
.article-hero__image-link {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    min-height: 300px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .article-hero__image-link {
        min-height: 500px;
    }
}

.article-hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-hero__image-link:hover .article-hero__image {
    transform: scale(1.05);
}

.article-hero__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
}

.article-hero__placeholder-icon {
    font-size: 4rem;
    opacity: 0.3;
}

/* Gradient Overlay */
.article-hero__gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    pointer-events: none;
}

/* Content Area */
.article-hero__content {
    padding: var(--spacing-8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .article-hero__content {
        padding: var(--spacing-10);
    }
}

/* Category Badge */
.article-hero__category {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border: 1px solid;
    width: fit-content;
    transition: all var(--transition-normal);
}

.article-hero__category:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.article-hero__category-icon {
    font-size: 1rem;
    line-height: 1;
}

.article-hero__category-name {
    line-height: 1;
}

/* Title */
.article-hero__title {
    margin: 0;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

@media (min-width: 768px) {
    .article-hero__title {
        font-size: var(--font-size-4xl);
    }
}

.article-hero__title-link {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
}

.article-hero__title-link:hover {
    color: var(--color-primary);
}

/* Excerpt */
.article-hero__excerpt {
    margin: 0;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

/* Meta Section */
.article-hero__meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

@media (min-width: 640px) {
    .article-hero__meta {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-6);
    }
}

/* Author */
.article-hero__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
    color: var(--color-text);
    transition: color var(--transition-normal);
}

.article-hero__author:hover {
    color: var(--color-primary);
}

.article-hero__author-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.article-hero__author-placeholder {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
}

.article-hero__author-name {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
}

/* Metadata */
.article-hero__metadata {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    align-items: center;
}

.article-hero__metadata-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.article-hero__metadata-icon {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

/* CTA Button */
.article-hero__cta {
    margin-top: var(--spacing-2);
    width: fit-content;
}

/* Secondary Featured Grid */
.article-hero__secondary {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
}

@media (min-width: 640px) {
    .article-hero__secondary {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .article-hero__secondary {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Secondary Card */
.article-hero__secondary-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.article-hero__secondary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-hero__secondary-image-link {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.article-hero__secondary-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.article-hero__secondary-card:hover .article-hero__secondary-image {
    transform: scale(1.05);
}

.article-hero__secondary-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
}

/* Secondary Category Badge */
.article-hero__secondary-category {
    position: absolute;
    top: var(--spacing-3);
    left: var(--spacing-3);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Secondary Content */
.article-hero__secondary-content {
    padding: var(--spacing-4);
}

.article-hero__secondary-title {
    margin: 0 0 var(--spacing-2) 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
}

.article-hero__secondary-title a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.article-hero__secondary-title a:hover {
    color: var(--color-primary);
}

/* Truncate title to 2 lines */
.article-hero__secondary-title {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-hero__secondary-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.article-hero__secondary-author {
    font-weight: var(--font-weight-medium);
}

.article-hero__secondary-reading-time::before {
    content: '•';
    margin-right: var(--spacing-3);
}

/* Minimal Layout Variant */
.article-hero--minimal .article-hero__primary {
    min-height: 400px;
}

@media (min-width: 768px) {
    .article-hero--minimal .article-hero__primary {
        min-height: 400px;
    }
}

.article-hero--minimal .article-hero__excerpt {
    display: none;
}

@media (min-width: 768px) {
    .article-hero--minimal .article-hero__excerpt {
        display: block;
    }
}

/* Mobile Stacked Layout */
@media (max-width: 767px) {
    .article-hero__primary {
        grid-template-columns: 1fr;
    }
    
    .article-hero__image-link {
        min-height: 250px;
    }
    
    .article-hero__content {
        padding: var(--spacing-6);
    }
    
    .article-hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .article-hero__excerpt {
        font-size: var(--font-size-base);
    }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .article-hero__secondary-card {
    background: var(--color-bg-secondary);
}

[data-theme="dark"] .article-hero__gradient {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
}