/* ========================================================================
   JOURNAL.CSS
   brain.ai-platform.space/journal + /article - журнал в стилях лендинга
   Префикс: .j-* ; зависит от v2.css (кнопки, контейнер) и тем themes.css
   ======================================================================== */

.j-page { padding: 120px 0 80px; }

.j-crumb {
    display: inline-block;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
}

.j-crumb:hover { color: var(--text-primary); }

.j-title {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: clamp(34px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin: 0 0 16px;
    max-width: 860px;
}

.j-subtitle {
    font-size: clamp(16px, 2vw, 19px);
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0 0 48px;
    max-width: 680px;
}

/* ===== Список статей ===== */
.j-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 1200px;
}

.j-card {
    padding: 32px;
    background: color-mix(in oklch, var(--bg-secondary, #1a1a1a) 60%, transparent);
    border: 1px solid color-mix(in oklch, white 8%, transparent);
    border-radius: 16px;
    transition: transform 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
}

.j-card:hover {
    transform: translateY(-4px);
    border-color: color-mix(in oklch, oklch(70% 0.12 240) 40%, transparent);
}

/* Картинки лежат в <picture> (WebP + JPG). Отступы карточки снимает обёртка */
.j-card > picture {
    display: block;
    margin: -32px -32px 24px;
}

.j-card-img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    border-radius: 16px 16px 0 0;
}

.j-article > picture {
    display: block;
    margin: 0 0 40px;
}

.j-cover {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid color-mix(in oklch, white 8%, transparent);
}

.j-card-meta {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.j-card-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.35;
    margin: 0 0 12px;
}

.j-card-excerpt {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0 0 24px;
    flex-grow: 1;
}

/* ===== Тело статьи ===== */
.j-article { max-width: 760px; }

.j-article-meta {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 32px;
}

.j-article-body { font-size: 17px; line-height: 1.75; }

.j-article-body .j-lead {
    font-size: 20px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0 0 40px;
}

.j-article-body h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 700;
    line-height: 1.25;
    margin: 48px 0 16px;
    letter-spacing: -0.01em;
}

.j-article-body h2 { scroll-margin-top: 96px; }

/* Содержание статьи */
.j-toc {
    margin: 0 0 40px;
    padding: 20px 24px;
    background: color-mix(in oklch, var(--bg-secondary, #1a1a1a) 60%, transparent);
    border: 1px solid color-mix(in oklch, white 8%, transparent);
    border-radius: 12px;
}

.j-toc-title {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.j-toc ul { list-style: none; margin: 0; padding: 0; }

.j-toc li { margin: 0; }

.j-toc a {
    display: block;
    padding: 6px 0;
    font-size: 15px;
    line-height: 1.4;
    color: var(--text-primary);
    text-decoration: none;
    opacity: 0.85;
}

.j-toc a:hover { opacity: 1; text-decoration: underline; }

/* Вторая кнопка записи посреди статьи */
.j-cta-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px 28px;
    margin: 48px 0 8px;
    padding: 24px 28px;
    background: color-mix(in oklch, var(--bg-secondary, #1a1a1a) 70%, transparent);
    border: 1px solid color-mix(in oklch, white 10%, transparent);
    border-radius: 16px;
}

.j-cta-inline p { margin: 0; font-size: 16px; line-height: 1.55; }

.j-cta-inline .mkt-btn { flex-shrink: 0; }

.j-article-body p { margin: 0 0 20px; color: var(--text-primary); }

/* Ссылки в тексте статьи: тема сайта задаёт --gold (светлая и тёмная) */
.j-article-body p a {
    color: var(--gold, #FFD700);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.j-article-body p a:hover { text-decoration-thickness: 2px; }

.j-article-body .j-note {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    padding: 16px 20px;
    border-left: 3px solid oklch(70% 0.12 240);
    background: color-mix(in oklch, oklch(70% 0.12 240) 6%, transparent);
    border-radius: 0 8px 8px 0;
}

.j-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0 32px;
    font-size: 15px;
    border: 1px solid color-mix(in oklch, white 10%, transparent);
    border-radius: 12px;
    overflow: hidden;
}

.j-table th,
.j-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid color-mix(in oklch, white 8%, transparent);
    line-height: 1.5;
}

.j-table thead th {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    background: color-mix(in oklch, var(--bg-secondary, #1a1a1a) 90%, white 6%);
}

.j-table tbody tr:last-child th,
.j-table tbody tr:last-child td { border-bottom: none; }

.j-list { margin: 0 0 24px; padding-left: 24px; }

.j-list li { margin-bottom: 10px; }

/* ===== CTA статьи ===== */
.j-cta {
    margin: 64px 0 0;
    padding: 40px;
    text-align: center;
    background: color-mix(in oklch, var(--bg-secondary, #1a1a1a) 70%, transparent);
    border: 1px solid color-mix(in oklch, white 10%, transparent);
    border-radius: 16px;
}

.j-cta-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(20px, 3vw, 26px);
    font-weight: 700;
    margin: 0 0 12px;
}

.j-cta-text {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0 auto 28px;
    max-width: 520px;
}

/* ===== Связанные ===== */
.j-related { margin-top: 64px; }

.j-related-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 24px;
}

/* ===== Адаптив ===== */
@media (max-width: 600px) {
    .j-page { padding: 80px 0 60px; }
    .j-card { padding: 24px; }
    .j-card > picture { margin: -24px -24px 20px; }
    .j-cta { padding: 28px 20px; }
    .j-toc { padding: 16px 18px; }
    .j-cta-inline { flex-direction: column; align-items: stretch; text-align: center; padding: 20px; }
    .j-table th,
    .j-table td { padding: 10px 12px; font-size: 14px; }
}