/* ============================================================
   VipStoreAI — Blog Styles
   Complementary to /styles.css. Uses the same CSS variables.
   ============================================================ */

/* ── Breadcrumbs ─────────────────────────────────────────── */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--c-text-secondary);
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.breadcrumbs a {
    color: var(--c-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumbs a:hover {
    color: var(--c-primary);
}

.breadcrumbs .sep {
    color: var(--c-border);
    font-size: 12px;
    user-select: none;
}

.breadcrumbs .current {
    color: var(--c-text);
    font-weight: 500;
}

/* ── Blog meta (date + reading time) ─────────────────────── */
.blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--c-text-secondary);
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.blog-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.blog-meta .meta-item svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
    flex-shrink: 0;
}

.blog-meta .tag-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(79, 123, 232, 0.1);
    color: var(--c-primary);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* ── Article container ───────────────────────────────────── */
.blog-article {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 20px 80px;
    font-family: var(--font);
    color: var(--c-text);
}

.blog-article h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 20px;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-article h2 {
    font-size: clamp(20px, 2.8vw, 26px);
    font-weight: 700;
    line-height: 1.3;
    margin: 44px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--c-primary);
    color: var(--c-text);
}

.blog-article h3 {
    font-size: clamp(17px, 2.2vw, 20px);
    font-weight: 700;
    line-height: 1.35;
    margin: 32px 0 12px;
    padding-left: 14px;
    border-left: 3px solid var(--c-accent);
    color: var(--c-text);
}

.blog-article h4 {
    font-size: 17px;
    font-weight: 600;
    margin: 24px 0 8px;
    color: var(--c-text);
}

.blog-article p {
    font-size: 16px;
    line-height: 1.8;
    margin: 0 0 20px;
    color: var(--c-text);
}

.blog-article a {
    color: var(--c-primary);
    text-decoration: underline;
    text-decoration-color: rgba(79, 123, 232, 0.35);
    text-underline-offset: 3px;
    transition: color 0.2s, text-decoration-color 0.2s;
}

.blog-article a:hover {
    color: var(--c-primary-dark);
    text-decoration-color: var(--c-primary-dark);
}

/* ── Lists ───────────────────────────────────────────────── */
.blog-article ul,
.blog-article ol {
    margin: 0 0 20px;
    padding-left: 0;
    list-style: none;
}

.blog-article ul li,
.blog-article ol li {
    font-size: 16px;
    line-height: 1.75;
    margin-bottom: 10px;
    padding-left: 28px;
    position: relative;
    color: var(--c-text);
}

.blog-article ul li::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 11px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--c-primary);
}

.blog-article ol {
    counter-reset: ol-counter;
}

.blog-article ol li {
    counter-increment: ol-counter;
}

.blog-article ol li::before {
    content: counter(ol-counter);
    position: absolute;
    left: 0;
    top: 1px;
    width: 22px;
    height: 22px;
    background: var(--c-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* ── Blockquote ──────────────────────────────────────────── */
.blog-article blockquote {
    margin: 28px 0;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(79, 123, 232, 0.06) 0%, rgba(56, 178, 172, 0.04) 100%);
    border-left: 4px solid var(--c-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 16px;
    line-height: 1.75;
    color: var(--c-text);
    font-style: italic;
}

.blog-article blockquote p {
    margin: 0;
}

.blog-article blockquote cite {
    display: block;
    margin-top: 10px;
    font-style: normal;
    font-size: 13px;
    color: var(--c-text-secondary);
    font-weight: 600;
}

/* ── Images ──────────────────────────────────────────────── */
.blog-article img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    display: block;
    margin: 28px auto;
}

.blog-article figure {
    margin: 28px 0;
}

.blog-article figcaption {
    text-align: center;
    font-size: 13px;
    color: var(--c-text-secondary);
    margin-top: 8px;
}

/* ── Code ────────────────────────────────────────────────── */
.blog-article code {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border);
    border-radius: 5px;
    padding: 2px 7px;
    font-size: 14px;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    color: var(--c-primary-dark);
}

.blog-article pre {
    background: #1a1f2e;
    border-radius: var(--radius-sm);
    padding: 20px 24px;
    overflow-x: auto;
    margin: 24px 0;
}

.blog-article pre code {
    background: none;
    border: none;
    padding: 0;
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.6;
}

/* ── Table of Contents ───────────────────────────────────── */
.blog-toc {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin: 32px 0;
}

.blog-toc-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--c-text-secondary);
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    gap: 7px;
}

.blog-toc-title::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 2px;
    background: var(--c-primary);
    border-radius: 2px;
}

.blog-toc ol {
    margin: 0;
    padding: 0;
    counter-reset: toc-counter;
    list-style: none;
}

.blog-toc ol li {
    counter-increment: toc-counter;
    padding-left: 0;
    margin-bottom: 8px;
    font-size: 14px;
    line-height: 1.5;
}

.blog-toc ol li::before {
    display: none;
}

.blog-toc ol li a {
    color: var(--c-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.blog-toc ol li a::before {
    content: counter(toc-counter) ".";
    font-weight: 600;
    font-size: 12px;
    color: var(--c-primary);
    flex-shrink: 0;
    width: 18px;
}

.blog-toc ol li a:hover {
    color: var(--c-primary);
}

/* ── CTA block ───────────────────────────────────────────── */
.blog-cta {
    background: linear-gradient(135deg, var(--c-primary) 0%, #5b3fc8 100%);
    border-radius: var(--radius);
    padding: 40px 40px;
    margin: 48px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    pointer-events: none;
}

.blog-cta-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.blog-cta h3 {
    font-size: clamp(20px, 3vw, 26px);
    font-weight: 800;
    color: #fff;
    margin: 0 0 12px;
    padding: 0;
    border: none;
    line-height: 1.3;
}

.blog-cta p {
    color: rgba(255, 255, 255, 0.82);
    font-size: 15px;
    margin: 0 0 28px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.blog-cta .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--c-primary-dark);
    font-weight: 700;
    font-size: 15px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.blog-cta .cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    color: var(--c-primary-dark);
    text-decoration: none;
}

/* ── Related articles ────────────────────────────────────── */
.blog-related {
    margin: 56px 0 0;
    padding-top: 40px;
    border-top: 1px solid var(--c-border);
}

.blog-related-title {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--c-text);
}

.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

/* ── Blog grid (index page) ──────────────────────────────── */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

/* ── Blog card ───────────────────────────────────────────── */
.blog-card {
    background: var(--c-bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--c-border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    text-decoration: none;
    color: inherit;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 40px rgba(79, 123, 232, 0.14);
    text-decoration: none;
}

.blog-card-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

/* Gradient placeholders — 7 colour variants cycling via :nth-child */
.blog-card:nth-child(7n+1) .blog-card-image { background: linear-gradient(135deg, #4F7BE8 0%, #7B5EA7 100%); }
.blog-card:nth-child(7n+2) .blog-card-image { background: linear-gradient(135deg, #38B2AC 0%, #3182CE 100%); }
.blog-card:nth-child(7n+3) .blog-card-image { background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%); }
.blog-card:nth-child(7n+4) .blog-card-image { background: linear-gradient(135deg, #F093FB 0%, #4F7BE8 100%); }
.blog-card:nth-child(7n+5) .blog-card-image { background: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%); }
.blog-card:nth-child(7n+6) .blog-card-image { background: linear-gradient(135deg, #43E97B 0%, #38F9D7 100%); }
.blog-card:nth-child(7n+7) .blog-card-image { background: linear-gradient(135deg, #FA709A 0%, #FEE140 100%); }

.blog-card-image-icon {
    width: 52px;
    height: 52px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}

.blog-card-body {
    padding: 20px 22px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-primary);
    background: rgba(79, 123, 232, 0.1);
    padding: 3px 9px;
    border-radius: 20px;
    margin-bottom: 10px;
    align-self: flex-start;
}

.blog-card-tag.tag-сравнение  { color: #805AD5; background: rgba(128, 90, 213, 0.1); }
.blog-card-tag.tag-обзор      { color: #2C7A7B; background: rgba(56, 178, 172, 0.12); }
.blog-card-tag.tag-рейтинг    { color: #C05621; background: rgba(237, 137, 54, 0.12); }
.blog-card-tag.tag-бизнес     { color: #276749; background: rgba(72, 187, 120, 0.12); }

.blog-card h3 {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 10px;
    color: var(--c-text);
    transition: color 0.2s;
}

.blog-card:hover h3 {
    color: var(--c-primary);
}

.blog-card-excerpt {
    font-size: 14px;
    line-height: 1.65;
    color: var(--c-text-secondary);
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--c-border);
}

.blog-card-date {
    font-size: 12px;
    color: var(--c-text-secondary);
    display: flex;
    align-items: center;
    gap: 5px;
}

.blog-card-read-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--c-primary);
    display: flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s;
}

.blog-card:hover .blog-card-read-more {
    gap: 7px;
}

/* ── Blog index page header ──────────────────────────────── */
.blog-index-hero {
    text-align: center;
    padding: 56px 20px 8px;
}

.blog-index-hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 12px;
    line-height: 1.15;
}

.blog-index-hero .subtitle {
    font-size: 18px;
    color: var(--c-text-secondary);
    margin: 0 0 8px;
}

/* ── Filter tabs ─────────────────────────────────────────── */
.blog-filters {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin: 32px 0 0;
    padding-bottom: 8px;
}

.blog-filter-btn {
    padding: 7px 18px;
    border-radius: 20px;
    border: 1px solid var(--c-border);
    background: var(--c-bg-card);
    color: var(--c-text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font);
    text-decoration: none;
    display: inline-block;
}

.blog-filter-btn:hover,
.blog-filter-btn.active {
    background: var(--c-primary);
    border-color: var(--c-primary);
    color: #fff;
}

/* ── HR / divider in article ─────────────────────────────── */
.blog-article hr {
    border: none;
    border-top: 1px solid var(--c-border);
    margin: 36px 0;
}

/* ── Table in article ────────────────────────────────────── */
.blog-article table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.blog-article th {
    background: var(--c-bg-alt);
    padding: 12px 16px;
    text-align: left;
    font-weight: 700;
    font-size: 13px;
    color: var(--c-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--c-border);
}

.blog-article td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--c-border);
    vertical-align: top;
}

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

.blog-article tr:hover td {
    background: var(--c-bg-alt);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .blog-article {
        padding: 0 16px 60px;
    }

    .blog-cta {
        padding: 32px 24px;
    }

    .blog-cta .cta-btn {
        display: flex;
        width: 100%;
        justify-content: center;
        max-width: 320px;
        margin: 0 auto;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .blog-toc {
        padding: 18px 20px;
    }

    .blog-index-hero {
        padding: 36px 16px 4px;
    }
}

@media (max-width: 480px) {
    .blog-related-grid {
        grid-template-columns: 1fr;
    }

    .blog-filters {
        gap: 6px;
    }

    .blog-meta {
        gap: 10px;
    }
}

/* ===== Clickable card overlay ===== */
.blog-card {
    position: relative;
}
.blog-card h3 a::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
}
.blog-card h3 a {
    text-decoration: none;
    color: inherit;
}
.blog-card h3 a:hover {
    color: var(--c-primary);
}
.blog-card-read-more {
    color: var(--c-primary);
    font-weight: 600;
    font-size: .88rem;
}

/* ===== Blog Footer ===== */
.blog-footer {
    background: #f8fafc;
    border-top: 1px solid var(--c-border-light, #e2e8f0);
    padding: 48px 0 0;
    margin-top: 64px;
}
.blog-footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 36px;
}
.blog-footer__logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--c-text, #1a202c);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
}
.blog-footer__logo:hover {
    color: var(--c-primary, #4F7BE8);
}
.blog-footer__tagline {
    margin-top: 10px;
    font-size: .9rem;
    color: var(--c-text-secondary, #64748b);
    line-height: 1.5;
}
.blog-footer__col h4 {
    font-size: .85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--c-text, #1a202c);
    margin-bottom: 14px;
}
.blog-footer__col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.blog-footer__col li {
    margin-bottom: 9px;
}
.blog-footer__col a {
    color: var(--c-text-secondary, #64748b);
    text-decoration: none;
    font-size: .9rem;
    transition: color .2s;
}
.blog-footer__col a:hover {
    color: var(--c-primary, #4F7BE8);
}
.blog-footer__bottom {
    border-top: 1px solid var(--c-border-light, #e2e8f0);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.blog-footer__bottom p {
    font-size: .82rem;
    color: var(--c-text-secondary, #64748b);
    margin: 0;
}
@media (max-width: 768px) {
    .blog-footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
    .blog-footer__brand {
        grid-column: 1 / -1;
    }
    .blog-footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 480px) {
    .blog-footer__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}