/* ========================================
   ROI SPHERE — Blog Styles
   Listing · Single Post · Category Archive
   ======================================== */

/* --- Blog Hero --- */
.blog-hero {
    position: relative;
    padding: 160px 0 80px;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg-off) 0%, var(--bg) 100%);
}

.blog-hero .aim-hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(43,125,233,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(43,125,233,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.blog-hero .container {
    position: relative;
    z-index: 2;
}

.blog-hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--navy);
    line-height: 1.15;
    letter-spacing: -0.03em;
    max-width: 800px;
    margin: 16px auto 24px;
}

.blog-hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--primary), #6366F1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-hero-sub {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 640px;
    margin: 0 auto;
}

/* --- Single Post Hero --- */
.blog-hero-single {
    padding: 160px 0 60px;
}

.blog-hero-single h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    max-width: 760px;
}

.blog-hero-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    margin-bottom: 16px;
    transition: opacity 0.2s;
}

.blog-hero-category:hover {
    opacity: 0.7;
}

.blog-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.blog-meta-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-muted);
}

.blog-meta-reading-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 500;
}

/* --- Category Filter Bar --- */
.blog-filter {
    padding: 24px 0;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg);
    position: sticky;
    top: 68px;
    z-index: 90;
}

.blog-filter-inner {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 2px 0;
}

.blog-filter-inner::-webkit-scrollbar {
    display: none;
}

.blog-filter-pill {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-off);
    border: 1px solid var(--border);
    white-space: nowrap;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.blog-filter-pill.active {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

/* --- Blog Grid --- */
.blog-grid-section {
    padding: 60px 0 100px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.blog-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* --- Blog Card --- */
.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.blog-card-body {
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.blog-card-category {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    transition: opacity 0.2s;
}

.blog-card-category:hover {
    opacity: 0.7;
}

.blog-card-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.blog-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.35;
    margin-bottom: 12px;
}

.blog-card-title a {
    color: inherit;
    transition: color 0.2s;
}

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

.blog-card-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
    font-size: 0.82rem;
    color: var(--text-muted);
}

.blog-card-author {
    font-weight: 500;
    color: var(--text-secondary);
}

/* --- Article Content --- */
.blog-article {
    padding: 60px 0 0;
}

.blog-content {
    max-width: 760px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}

.blog-content h2 {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--navy);
    margin-top: 48px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.blog-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--navy);
    margin-top: 36px;
    margin-bottom: 16px;
    line-height: 1.35;
}

.blog-content p {
    margin-bottom: 20px;
}

.blog-content ul,
.blog-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.blog-content li {
    margin-bottom: 8px;
}

.blog-content strong {
    font-weight: 600;
    color: var(--navy);
}

.blog-content em {
    font-style: italic;
}

.blog-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.2s;
}

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

.blog-content blockquote {
    border-left: 3px solid var(--primary);
    padding: 16px 24px;
    margin: 32px 0;
    background: var(--primary-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-style: italic;
    color: var(--navy);
}

.blog-content blockquote p:last-child {
    margin-bottom: 0;
}

.blog-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88em;
    background: var(--bg-off);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-light);
}

.blog-content pre {
    background: var(--navy);
    color: #e2e8f0;
    padding: 24px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 32px 0;
}

.blog-content pre code {
    background: none;
    padding: 0;
    border: none;
    color: inherit;
}

.blog-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 40px 0;
}

.blog-content img {
    border-radius: var(--radius);
    margin: 32px 0;
}

/* --- Related Posts --- */
.blog-related {
    padding: 80px 0;
    background: var(--bg-off);
}

.blog-related .eyebrow {
    text-align: center;
}

.blog-related .section-title {
    text-align: center;
    margin-bottom: 40px;
}

.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

/* --- Pagination --- */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 40px 0 0;
}

.blog-pagination .nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.blog-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.blog-pagination .page-numbers:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-light);
}

.blog-pagination .page-numbers.current {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

.blog-pagination .page-numbers.dots {
    border: none;
    background: none;
}

.blog-pagination .page-numbers.prev,
.blog-pagination .page-numbers.next {
    width: auto;
    padding: 0 16px;
    font-size: 0.85rem;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .blog-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-hero {
        padding: 130px 0 60px;
    }
    .blog-hero h1 {
        font-size: 2.2rem;
    }
    .blog-hero-single h1 {
        font-size: 1.8rem;
    }
    .blog-grid {
        grid-template-columns: 1fr;
    }
    .blog-related-grid {
        grid-template-columns: 1fr;
    }
    .blog-content {
        font-size: 1rem;
    }
    .blog-content h2 {
        font-size: 1.4rem;
    }
    .blog-content h3 {
        font-size: 1.15rem;
    }
    .blog-meta {
        flex-wrap: wrap;
        gap: 12px;
    }
    .blog-filter {
        top: 60px;
    }
    .blog-grid-section {
        padding: 40px 0 80px;
    }
}

@media (max-width: 480px) {
    .blog-hero {
        padding: 120px 0 50px;
    }
    .blog-hero h1 {
        font-size: 1.8rem;
    }
    .blog-card-body {
        padding: 20px 18px;
    }
}