/* ========================================
   Блог — список и детальная страница
   ======================================== */

/* --- Переменные блога --- */
:root {
    --blog-primary: #0f766e;
    --blog-primary-light: #ccfbf1;
    --blog-accent: #0d9488;
    --blog-text: #1e293b;
    --blog-text-muted: #64748b;
    --blog-bg: #f8fafc;
    --blog-card-bg: #ffffff;
    --blog-border: #e2e8f0;
    --blog-radius: 16px;
    --blog-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
    --blog-shadow-hover: 0 8px 30px rgba(15,118,110,0.14), 0 2px 8px rgba(0,0,0,0.06);
    --blog-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Hero-баннер блога --- */
.blog-hero {
    background: linear-gradient(135deg, #0f766e 0%, #0d9488 50%, #14b8a6 100%);
    color: #fff;
    padding: 48px 20px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(255,255,255,0.05) 0%, transparent 40%);
    pointer-events: none;
}

.blog-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}

.blog-hero-title {
    margin: 0 0 12px;
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.blog-hero-subtitle {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.5;
}

/* --- Фильтры разделов --- */
.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    padding: 24px 20px 8px;
    max-width: 960px;
    margin: 0 auto;
}

.blog-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 999px;
    border: 1.5px solid var(--blog-border);
    background: var(--blog-card-bg);
    color: var(--blog-text-muted);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--blog-transition);
    cursor: pointer;
    white-space: nowrap;
}

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

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

.blog-filter-btn .filter-count {
    font-size: 11px;
    background: rgba(0,0,0,0.08);
    padding: 1px 7px;
    border-radius: 99px;
}

.blog-filter-btn.active .filter-count {
    background: rgba(255,255,255,0.25);
}

/* --- Поиск блога --- */
.blog-search-wrap {
    max-width: 400px;
    margin: 12px auto 0;
    position: relative;
}

.blog-search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border-radius: 999px;
    border: 1.5px solid var(--blog-border);
    background: var(--blog-card-bg);
    font-size: 14px;
    outline: none;
    transition: border-color var(--blog-transition);
    box-sizing: border-box;
}

.blog-search-input:focus {
    border-color: var(--blog-accent);
    box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}

.blog-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--blog-text-muted);
    font-size: 16px;
    pointer-events: none;
}

/* --- Сетка карточек --- */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 960px;
    margin: 24px auto 0;
    padding: 0 20px;
}

@media (min-width: 600px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 860px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

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

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--blog-shadow-hover);
    border-color: #99f6e4;
}

.blog-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(135deg, #f0fdfa, #e0f2fe);
}

.blog-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.blog-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    opacity: 0.3;
}

.blog-card-body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.blog-card-section {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--blog-accent);
    background: var(--blog-primary-light);
    padding: 3px 10px;
    border-radius: 99px;
}

.blog-card-date {
    font-size: 12px;
    color: var(--blog-text-muted);
}

.blog-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--blog-text);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.blog-card-excerpt {
    font-size: 14px;
    color: var(--blog-text-muted);
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card-footer {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--blog-border);
}

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

/* --- Featured (первая карточка — большая) --- */
@media (min-width: 860px) {
    .blog-card.featured {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 1.2fr 1fr;
    }

    .blog-card.featured .blog-card-cover {
        aspect-ratio: auto;
        height: 100%;
    }

    .blog-card.featured .blog-card-body {
        padding: 28px 32px;
        justify-content: center;
    }

    .blog-card.featured .blog-card-title {
        font-size: 1.4rem;
        -webkit-line-clamp: 4;
    }

    .blog-card.featured .blog-card-excerpt {
        -webkit-line-clamp: 4;
        font-size: 15px;
    }
}

/* --- Пустое состояние --- */
.blog-empty {
    text-align: center;
    padding: 64px 20px;
    max-width: 960px;
    margin: 0 auto;
}

.blog-empty-icon {
    font-size: 56px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.blog-empty-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 0 8px;
    color: var(--blog-text);
}

.blog-empty-text {
    color: var(--blog-text-muted);
    font-size: 15px;
}

/* --- Пагинация --- */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 40px 20px 60px;
    flex-wrap: wrap;
}

.blog-pagination a,
.blog-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--blog-transition);
    border: 1.5px solid var(--blog-border);
    color: var(--blog-text);
    background: var(--blog-card-bg);
}

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

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

.blog-pagination .disabled {
    opacity: 0.4;
    pointer-events: none;
}

.blog-pagination-info {
    font-size: 13px;
    color: var(--blog-text-muted);
    padding: 0 20px 48px;
    text-align: center;
}

/* ========================================
   Детальная страница статьи
   ======================================== */

.article-hero {
    position: relative;
    width: 100%;
    max-height: 480px;
    overflow: hidden;
    background: linear-gradient(135deg, #0f766e, #14b8a6);
}

.article-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.article-hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(transparent, rgba(0,0,0,0.55));
    pointer-events: none;
}

.article-hero-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 24px 28px;
    color: #fff;
    max-width: 900px;
    margin: 0 auto;
}

.article-hero-section {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
    padding: 5px 14px;
    border-radius: 99px;
    margin-bottom: 12px;
}

.article-hero-title {
    margin: 0 0 10px;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 800;
    line-height: 1.25;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.article-hero-meta {
    display: flex;
    gap: 16px;
    font-size: 14px;
    opacity: 0.9;
}

/* --- Без обложки --- */
.article-hero--no-cover {
    max-height: none;
    padding: 40px 24px 32px;
    text-align: center;
    background: linear-gradient(135deg, #0f766e 0%, #0d9488 50%, #14b8a6 100%);
}

.article-hero--no-cover .article-hero-content {
    position: static;
    max-width: 700px;
    margin: 0 auto;
}

.article-hero--no-cover .article-hero-title {
    text-shadow: none;
}

/* --- Прогресс чтения --- */
.article-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--blog-primary), #2dd4bf);
    z-index: 100;
    transition: width 0.1s linear;
}

/* --- Тело статьи --- */
.article-main {
    max-width: 780px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

.article-lead {
    font-size: 1.15rem;
    line-height: 1.65;
    color: var(--blog-text-muted);
    margin: 0 0 28px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--blog-border);
}

.article-body {
    font-size: 17px;
    line-height: 1.75;
    color: var(--blog-text);
}

.article-body h1,
.article-body h2,
.article-body h3 {
    margin-top: 2em;
    margin-bottom: 0.6em;
    font-weight: 700;
    line-height: 1.3;
}

.article-body h2 {
    font-size: 1.45rem;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--blog-border);
}

.article-body h3 {
    font-size: 1.2rem;
}

.article-body p {
    margin: 0 0 1.2em;
}

.article-body img {
    max-width: 100%;
    border-radius: 12px;
    margin: 1.5em 0;
}

.article-body blockquote {
    border-left: 4px solid var(--blog-accent);
    margin: 1.5em 0;
    padding: 12px 20px;
    background: var(--blog-primary-light);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--blog-text-muted);
}

.article-body pre,
.article-body code {
    background: #1e293b;
    color: #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
}

.article-body pre {
    padding: 16px;
    overflow-x: auto;
    margin: 1.5em 0;
}

.article-body code {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
}

.article-body pre code {
    padding: 0;
    background: none;
}

.article-body ul,
.article-body ol {
    padding-left: 1.5em;
    margin: 0 0 1.2em;
}

.article-body li {
    margin-bottom: 0.5em;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 15px;
}

.article-body th,
.article-body td {
    padding: 10px 14px;
    border: 1px solid var(--blog-border);
    text-align: left;
}

.article-body th {
    background: var(--blog-bg);
    font-weight: 600;
}

.article-body a {
    color: var(--blog-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* --- Навигация по статьям --- */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 40px 0 0;
    padding-top: 24px;
    border-top: 2px solid var(--blog-border);
}

.article-nav-link {
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    border-radius: 12px;
    border: 1px solid var(--blog-border);
    text-decoration: none;
    transition: all var(--blog-transition);
    background: var(--blog-card-bg);
}

.article-nav-link:hover {
    border-color: var(--blog-accent);
    box-shadow: var(--blog-shadow-hover);
}

.article-nav-link--next {
    text-align: right;
    align-items: flex-end;
}

.article-nav-label {
    font-size: 12px;
    color: var(--blog-text-muted);
    margin-bottom: 4px;
}

.article-nav-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--blog-primary);
}

/* --- Кнопка наверх --- */
.article-back-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--blog-primary);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(15,118,110,0.3);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-back-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.article-back-top:hover {
    background: var(--blog-accent);
}

/* --- CTA-блок внизу статьи --- */
.blog-article-cta {
    margin-top: 40px;
    padding: 28px 32px;
    background: linear-gradient(135deg, #f0fdfa, #f0f9ff);
    border-radius: var(--blog-radius);
    border: 1px solid #ccfbf1;
    text-align: center;
}

.blog-article-cta h3 {
    margin: 0 0 8px;
    font-size: 1.2rem;
    color: var(--blog-text);
}

.blog-article-cta p {
    margin: 0 0 20px;
    color: var(--blog-text-muted);
    font-size: 15px;
    line-height: 1.5;
}

.blog-article-cta__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.blog-article-cta__btn {
    display: inline-flex;
    align-items: center;
    padding: 11px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--blog-transition);
}

.blog-article-cta__btn--primary {
    background: var(--blog-primary);
    color: #fff;
}

.blog-article-cta__btn--primary:hover {
    background: var(--blog-accent);
    box-shadow: 0 4px 14px rgba(15,118,110,0.25);
}

.blog-article-cta__btn--secondary {
    background: #fff;
    color: var(--blog-primary);
    border: 1.5px solid var(--blog-primary);
}

.blog-article-cta__btn--secondary:hover {
    background: var(--blog-primary-light);
}

/* --- Связанные продукты --- */
.blog-related-products {
    margin-top: 40px;
}

.blog-related-products h3 {
    font-size: 1.2rem;
    margin: 0 0 16px;
    color: var(--blog-text);
}

.blog-product-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.blog-product-item {
    background: var(--blog-card-bg);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 12px;
    transition: box-shadow var(--blog-transition);
}

.blog-product-item:hover {
    box-shadow: var(--blog-shadow);
}

.blog-product-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.blog-product-code {
    font-size: 13px;
    font-weight: 600;
    color: var(--blog-primary);
}

.blog-product-name {
    font-weight: 600;
    margin-left: 8px;
}

.blog-product-meta {
    font-size: 13px;
    color: var(--blog-text-muted);
    margin-left: 8px;
}

.blog-product-cart-btn {
    padding: 8px 18px;
    border-radius: 8px;
    border: none;
    background: var(--blog-primary);
    color: #fff;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: background var(--blog-transition);
}

.blog-product-cart-btn:hover {
    background: var(--blog-accent);
}

/* --- Мобильная адаптация --- */
@media (max-width: 600px) {
    .blog-hero {
        padding: 36px 16px 32px;
    }

    .blog-grid {
        gap: 16px;
        padding: 0 16px;
    }

    .article-main {
        padding: 24px 16px 40px;
    }

    .article-hero-content {
        padding: 20px 16px;
    }

    .article-nav {
        grid-template-columns: 1fr;
    }

    .blog-article-cta {
        padding: 20px 24px;
    }

    .blog-article-cta__actions {
        flex-direction: column;
        align-items: center;
    }

    .blog-article-cta__btn {
        width: 100%;
        justify-content: center;
    }
}