/* ==========================================================================
   Blog — Concentio Website
   Article layout, typography, TOC, comparison tables, FAQ, index cards
   ========================================================================== */

/* --- Blog hero --- */
.blog-hero {
    padding: 5rem 0 2.5rem;
    text-align: center;
}

.blog-hero-category {
    display: inline-block;
    background: var(--brand-50);
    color: var(--brand-600);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    margin-bottom: 1.25rem;
}

.blog-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--neutral-950);
    line-height: 1.2;
    letter-spacing: -0.02em;
    max-width: 780px;
    margin: 0 auto 1rem;
}

.blog-hero-desc {
    font-size: 1.125rem;
    color: var(--neutral-500);
    max-width: 640px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--neutral-400);
}

.blog-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.blog-meta-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--neutral-300);
    flex-shrink: 0;
}

/* --- Blog container --- */
.blog-container {
    max-width: 780px;
    margin: 0 auto;
}

/* --- Table of contents --- */
.blog-toc {
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
}

.blog-toc-title {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--neutral-700);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0 0 0.75rem;
}

.blog-toc ol {
    list-style: decimal;
    padding-left: 1.25rem;
    margin: 0;
}

.blog-toc li {
    padding: 0.25rem 0;
}

.blog-toc li a {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    text-decoration: none;
    transition: color 0.15s;
}

.blog-toc li a:hover {
    color: var(--brand-600);
    text-decoration: none;
}

/* --- Blog body typography --- */
.blog-body h2 {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
    scroll-margin-top: 80px;
}

.blog-body h2:first-child {
    margin-top: 0;
    padding-top: 0;
}

.blog-body h3 {
    font-size: 1.1875rem;
    font-weight: 600;
    color: var(--neutral-800);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.blog-body p {
    font-size: 1.0625rem;
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.blog-body ul,
.blog-body ol {
    font-size: 1.0625rem;
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.blog-body li {
    margin-bottom: 0.375rem;
}

.blog-body strong {
    color: var(--neutral-800);
    font-weight: 600;
}

.blog-body hr {
    border: none;
    border-top: 1px solid var(--neutral-200);
    margin: 2.5rem 0;
}

.blog-body a {
    color: var(--brand-600);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.blog-body a:hover {
    color: var(--brand-700);
}

/* --- Blockquote / Disclaimer --- */
.blog-body blockquote,
.blog-callout {
    background: var(--neutral-50);
    border-left: 3px solid var(--brand-600);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.7;
}

.blog-body blockquote p,
.blog-callout p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* --- Summary card --- */
.blog-summary {
    background: #fff;
    border: 2px solid var(--brand-600);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin: 2rem 0 2.5rem;
}

.blog-summary-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--brand-600);
    margin: 0 0 1rem;
    padding: 0;
}

.blog-summary ol,
.blog-summary ul {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.8;
}

.blog-summary p {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.7;
}

/* --- Comparison table --- */
.blog-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5rem 0 2rem;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
}

.blog-comparison {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
    margin: 0;
    min-width: 540px;
}

.blog-comparison thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    background: var(--neutral-900);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
}

.blog-comparison thead th:first-child {
    border-radius: 0;
}

.blog-comparison tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--neutral-100);
    color: var(--neutral-600);
    vertical-align: top;
}

.blog-comparison tbody tr:last-child td {
    border-bottom: none;
}

.blog-comparison tbody td:first-child {
    font-weight: 600;
    color: var(--neutral-800);
    white-space: nowrap;
}

.blog-comparison tbody tr:nth-child(even) {
    background: var(--neutral-50);
}

.blog-check {
    color: var(--success-600);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.blog-check i {
    font-size: 0.9375rem;
}

/* --- FAQ accordion --- */
.blog-faq .accordion-item {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg) !important;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.blog-faq .accordion-button {
    font-size: 1rem;
    font-weight: 600;
    color: var(--neutral-800);
    background: #fff;
    padding: 1rem 1.25rem;
    box-shadow: none !important;
}

.blog-faq .accordion-button:not(.collapsed) {
    background: var(--neutral-50);
    color: var(--brand-600);
}

.blog-faq .accordion-button:focus {
    box-shadow: none;
    border-color: var(--neutral-200);
}

.blog-faq .accordion-body {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.7;
    padding: 0 1.25rem 1.25rem;
}

.blog-faq .accordion-body p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* --- Sources --- */
.blog-sources {
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    margin-top: 2.5rem;
}

.blog-sources-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--neutral-700);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0 0 0.75rem;
}

.blog-sources ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.8125rem;
    color: var(--neutral-500);
    line-height: 1.8;
}

.blog-sources a {
    color: var(--neutral-500);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.blog-sources a:hover {
    color: var(--brand-600);
}

/* --- Blog index cards --- */
.blog-card {
    display: block;
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
    color: inherit;
}

.blog-card-body {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.blog-card-category {
    display: inline-block;
    background: var(--brand-50);
    color: var(--brand-600);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.1875rem 0.625rem;
    border-radius: 999px;
    margin-bottom: 0.75rem;
    width: fit-content;
}

.blog-card-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 0.625rem;
    line-height: 1.35;
}

.blog-card-desc {
    font-size: 0.9375rem;
    color: var(--neutral-500);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1.25rem;
}

.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--neutral-400);
}

.blog-card-cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--brand-600);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.blog-card:hover .blog-card-cta {
    color: var(--brand-700);
}

/* Featured card (first/latest post) */
.blog-card-featured .blog-card-body {
    padding: 2.5rem;
}

.blog-card-featured .blog-card-title {
    font-size: 1.75rem;
}

.blog-card-featured .blog-card-desc {
    font-size: 1.0625rem;
}

/* --- Responsive --- */
@media (max-width: 767.98px) {
    .blog-hero {
        padding: 3.5rem 0 2rem;
    }

    .blog-hero h1 {
        font-size: 1.875rem;
    }

    .blog-hero-desc {
        font-size: 1rem;
    }

    .blog-meta {
        flex-wrap: wrap;
        gap: 0.5rem 1rem;
    }

    .blog-body h2 {
        font-size: 1.375rem;
        margin-top: 2.5rem;
    }

    .blog-body h3 {
        font-size: 1.0625rem;
    }

    .blog-body p,
    .blog-body ul,
    .blog-body ol {
        font-size: 1rem;
    }

    .blog-toc {
        padding: 1.25rem 1.5rem;
    }

    .blog-summary {
        padding: 1.5rem;
    }

    .blog-card-featured .blog-card-body {
        padding: 1.75rem;
    }

    .blog-card-featured .blog-card-title {
        font-size: 1.375rem;
    }

    .blog-card-featured .blog-card-desc {
        font-size: 0.9375rem;
    }

    .blog-card-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}