/* ========================================
   Blog Styles
   ======================================== */

/* ========================================
   Reading Progress Bar
   ======================================== */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 10000;
    background: transparent;
}

.reading-progress__bar {
    height: 100%;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 50ms linear;
}

/* ========================================
   Blog Layout (Listing Page)
   ======================================== */

.blog-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-10);
    padding: var(--space-16) 0;
}

.blog-content {
    min-width: 0;
}

.blog-sidebar {
    min-width: 0;
}

/* ========================================
   Blog Cards Grid
   ======================================== */

.blog-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

/* ========================================
   Blog Card
   ======================================== */

.blog-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.blog-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.blog-card.visible:hover {
    transform: translateY(-4px);
}

.blog-card.blog-card--hidden {
    display: none;
}

.blog-card__image-wrapper {
    position: relative;
    overflow: hidden;
    height: 200px;
}

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

.blog-card:hover .blog-card__image {
    transform: scale(1.08);
}

.blog-card__body {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.blog-card__meta-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-text-light);
    opacity: 0.5;
}

.blog-card__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.3;
    margin-bottom: var(--space-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-card__title a:hover {
    color: var(--color-primary);
}

.blog-card__excerpt {
    font-size: var(--text-base);
    color: var(--color-text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-4);
    flex: 1;
}

.blog-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: auto;
}

/* ========================================
   Featured Card (First Article)
   ======================================== */

.blog-card--featured {
    grid-column: 1 / -1;
    flex-direction: row;
}

.blog-card--featured .blog-card__image-wrapper {
    width: 50%;
    height: auto;
    min-height: 320px;
    flex-shrink: 0;
}

.blog-card--featured .blog-card__body {
    padding: var(--space-8);
    justify-content: center;
}

.blog-card--featured .blog-card__title {
    font-size: var(--text-2xl);
    -webkit-line-clamp: 3;
}

.blog-card--featured .blog-card__excerpt {
    -webkit-line-clamp: 4;
}

/* ========================================
   Blog Tag (Pill Badge)
   ======================================== */

.blog-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-light);
    color: var(--color-primary);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}

.blog-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   Sidebar Widgets
   ======================================== */

.blog-sidebar__widget {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-8);
}

.blog-sidebar__widget:first-child {
    position: sticky;
    top: 100px;
}

.blog-sidebar__widget-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-4);
}

/* Tag Filter Widget */
.blog-tags-widget {
    position: sticky;
    top: 100px;
}

.blog-tag-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.blog-tag-filter {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--color-light);
    color: var(--color-text);
    font-size: var(--text-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.blog-tag-filter:hover {
    background: var(--color-primary-light);
    color: var(--color-white);
}

.blog-tag-filter--active {
    background: var(--color-primary);
    color: var(--color-white);
}

.blog-tag-filter__count {
    font-size: var(--text-xs);
    opacity: 0.7;
}


/* ========================================
   Article Hero
   ======================================== */

.article-hero {
    padding: calc(80px + var(--space-12)) 0 var(--space-12);
    background: linear-gradient(135deg, var(--color-dark) 0%, #1a1f42 100%);
}

.article-hero .container {
    max-width: 900px;
}

.article-hero__breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-6);
}

.article-hero__breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-hero__breadcrumb a:hover {
    color: var(--color-white);
}

.article-hero__breadcrumb-separator {
    font-size: var(--text-xs);
}

.article-hero__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-4);
}

.article-hero__meta-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
}

.article-hero__title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--space-6);
}

.article-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.article-hero__tags .blog-tag {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-primary-light);
}

.article-hero__tags .blog-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.article-hero__author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.article-hero__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--color-white);
}

.article-hero__author-info {
    display: flex;
    flex-direction: column;
}

.article-hero__author-name {
    font-weight: 600;
    color: var(--color-white);
    font-size: var(--text-base);
}

.article-hero__author-role {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Article Featured Image
   ======================================== */

.article-featured-image {
    max-width: 900px;
    margin: calc(-1 * var(--space-8)) auto var(--space-12);
    padding: 0 var(--container-padding);
}

.article-featured-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   Article Content Typography
   ======================================== */

.article-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 var(--container-padding) var(--space-12);
}

.article-content p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-6);
}

.article-content h2 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-top: var(--space-12);
    margin-bottom: var(--space-6);
    line-height: 1.3;
}

.article-content h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-dark);
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-6);
    padding-left: var(--space-6);
}

.article-content li {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.article-content ul li::marker {
    color: var(--color-primary);
}

.article-content ol li::marker {
    color: var(--color-primary);
    font-weight: 600;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--space-4) var(--space-6);
    margin: var(--space-8) 0;
    background: var(--color-lighter);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-content blockquote p {
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--color-text);
    margin-bottom: 0;
}

.article-content figure {
    margin: var(--space-8) 0;
}

.article-content figure img {
    width: 100%;
    border-radius: var(--radius-md);
}

.article-content figcaption {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    text-align: center;
    margin-top: var(--space-2);
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: var(--color-primary-light);
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

.article-content a:hover {
    color: var(--color-primary-dark);
}

.article-content strong {
    font-weight: 600;
    color: var(--color-dark);
}

/* ========================================
   Article Footer (Tags + Share)
   ======================================== */

.article-footer {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--space-8) var(--container-padding);
    border-top: 1px solid var(--color-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.article-footer__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.article-footer__share {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.article-footer__share-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-light);
}

.share-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-light);
    color: var(--color-text-light);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.share-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.share-btn svg {
    width: 16px;
    height: 16px;
}

/* ========================================
   Related Articles
   ======================================== */

.related-articles {
    padding: var(--space-16) 0;
    background: var(--color-lighter);
}

.related-articles__header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.related-articles__title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-dark);
}

.related-articles__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.related-articles .blog-card {
    opacity: 0;
    transform: translateY(20px);
}

.related-articles .blog-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   No Results State
   ======================================== */

.blog-no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-12) var(--space-4);
}

.blog-no-results__icon {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-4);
}

.blog-no-results__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-2);
}

.blog-no-results__text {
    font-size: var(--text-base);
    color: var(--color-text-light);
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.blog-card {
    transition: opacity 0.4s ease, transform 0.4s ease, box-shadow var(--transition-base);
}

/* ========================================
   Container Narrow (reading width)
   ======================================== */

.container--narrow {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ========================================
   Responsive Breakpoints
   ======================================== */

@media (max-width: 1024px) {
    .blog-layout {
        grid-template-columns: 1fr;
    }

    .blog-sidebar {
        order: -1;
    }

    .blog-tags-widget {
        position: static;
    }

    .blog-sidebar__widget:first-child {
        position: static;
    }

    .blog-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }

    .blog-sidebar__widget {
        margin-bottom: 0;
    }

    .related-articles__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-layout {
        padding: var(--space-10) 0;
    }

    .blog-cards-grid {
        grid-template-columns: 1fr;
    }

    .blog-card--featured {
        flex-direction: column;
    }

    .blog-card--featured .blog-card__image-wrapper {
        width: 100%;
        height: 200px;
        min-height: auto;
    }

    .blog-card--featured .blog-card__body {
        padding: var(--space-6);
    }

    .blog-card--featured .blog-card__title {
        font-size: var(--text-xl);
    }

    .blog-sidebar {
        grid-template-columns: 1fr;
    }

    .related-articles__grid {
        grid-template-columns: 1fr;
    }

    .article-hero__title {
        font-size: var(--text-2xl);
    }

    .article-featured-image {
        margin-top: calc(-1 * var(--space-4));
    }

    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }

}

@media (max-width: 480px) {
    .blog-layout {
        padding: var(--space-8) 0;
    }

    .blog-card__body {
        padding: var(--space-4);
    }

    .blog-sidebar__widget {
        padding: var(--space-4);
    }

    .article-content p,
    .article-content li {
        font-size: var(--text-base);
    }

    .article-content h2 {
        font-size: var(--text-xl);
    }

    .article-content h3 {
        font-size: var(--text-lg);
    }
}