/* ============================================================
   BLOG CSS — Estilos específicos para o Hub de Conteúdo
   ============================================================ */

/* ============================================================
   BLOG HEADER (Listagem)
   ============================================================ */
.blog-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.blog-header__title {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    margin-bottom: var(--space-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-header__desc {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================================
   BLOG CATEGORIES FILTER
   ============================================================ */
.blog-categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-3xl);
}

.blog-category-btn {
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: var(--bg-surface-2);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid rgba(20, 18, 40, 0.05);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.blog-category-btn:hover,
.blog-category-btn--active {
    background: var(--color-primary);
    color: var(--text-on-primary);
    border-color: var(--color-primary);
}

/* ============================================================
   BLOG GRID & CARDS
   ============================================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(20, 18, 40, 0.05);
    overflow: hidden;
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-6px);
    border-color: rgba(108, 92, 231, 0.3);
    box-shadow: var(--shadow-lg);
}

.blog-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.blog-card__link:hover .blog-card__title {
    color: var(--color-secondary);
}

.blog-card__image-wrapper {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
}

.blog-card__image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image {
    transform: scale(1.05);
}

.blog-card__category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--gradient-primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

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

.blog-card__title {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-sm);
    color: var(--text-heading);
    transition: color var(--transition-fast);
}

.blog-card__excerpt {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(20, 18, 40, 0.05);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ============================================================
   SINGLE ARTICLE
   ============================================================ */
.article-page {
    padding-top: calc(72px + var(--space-2xl));
}

.article-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.article-category {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.article-title {
    font-size: var(--font-size-4xl);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.article-meta-item svg {
    width: 16px;
    height: 16px;
}

.article-hero-image {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto var(--space-4xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.article-hero-image img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
}

.article-content {
    max-width: 760px;
    margin: 0 auto;
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.article-content h2 {
    font-size: var(--font-size-2xl);
    margin: var(--space-3xl) 0 var(--space-md);
    color: var(--text-heading);
}

.article-content h3 {
    font-size: var(--font-size-xl);
    margin: var(--space-2xl) 0 var(--space-sm);
    color: var(--text-heading);
}

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

.article-content li {
    margin-bottom: var(--space-sm);
}

.article-content a {
    color: var(--color-secondary);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: rgba(0, 168, 204, 0.4);
    text-underline-offset: 4px;
}

.article-content a:hover {
    color: var(--color-secondary-light);
    text-decoration-color: var(--color-secondary-light);
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-xl) 0;
    background: rgba(108, 92, 231, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.article-content img {
    border-radius: var(--radius-lg);
    margin: var(--space-2xl) 0;
    box-shadow: var(--shadow-md);
}

/* ============================================================
   AUTHOR BOX
   ============================================================ */
.article-author {
    max-width: 760px;
    margin: var(--space-4xl) auto;
    padding: var(--space-2xl);
    background: var(--bg-surface-2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.article-author__avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.article-author__avatar svg {
    width: 40px;
    height: 40px;
    color: white;
}

.article-author__info h3 {
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-xl);
}

.article-author__info p {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

/* ============================================================
   ARTICLE FOOTER (Tags, Share)
   ============================================================ */
.article-footer {
    max-width: 760px;
    margin: 0 auto var(--space-4xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid rgba(20, 18, 40, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

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

.article-share__label {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.article-share__btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-surface-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.article-share__btn:hover {
    background: var(--color-primary);
    color: white;
}

.article-share__btn svg {
    width: 18px;
    height: 18px;
}