/**
 * Blog styles — listing + article (frontend/modules/blog).
 */

/* ─── Listing hero ───────────────────────────────────────────── */
.blog-hero {
    border-bottom: 1px solid var(--pp-color-card-border);
}

.blog-hero__inner {
    padding: 56px 0 40px;
    text-align: center;
}

.blog-hero__sup {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--pp-color-pen-dark);
    margin: 0 0 10px;
}

.blog-hero__title {
    font-family: var(--pp-font-serif);
    font-weight: 600;
    font-size: clamp(30px, 5vw, 44px);
    line-height: 1.15;
    margin: 0 0 12px;
}

.blog-hero__lead {
    color: var(--pp-color-muted);
    font-size: 16px;
    line-height: 1.6;
    max-width: 520px;
    margin: 0 auto;
}

/* ─── Category filter ────────────────────────────────────────── */
.blog-cats {
    margin: 32px 0;
}

.blog-cats__scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
}

.blog-cats__scroll::-webkit-scrollbar {
    display: none;
}

.blog-cats__btn {
    background: #fff;
    color: var(--pp-color-muted);
    border: 1px solid var(--pp-color-card-border);
    border-radius: 999px;
    padding: 8px 18px;
    font-size: 13.5px;
    font-weight: 600;
    font-family: var(--pp-font-sans);
    white-space: nowrap;
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color .15s, color .15s, border-color .15s;
}

.blog-cats__btn:hover {
    border-color: var(--pp-color-pen);
    color: var(--pp-color-ink);
}

.blog-cats__btn.is-active {
    background: var(--pp-color-ink);
    color: #fff;
    border-color: var(--pp-color-ink);
}

/* ─── Feed grid ──────────────────────────────────────────────── */
.blog-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.blog-feed__empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--pp-color-muted);
    padding: 60px 0;
}

/* ─── Card ───────────────────────────────────────────────────── */
.blog-card {
    background: #fff;
    border: 1px solid var(--pp-color-card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform .2s, box-shadow .2s;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px -24px rgba(28, 35, 64, .3);
}

.blog-card__link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.blog-card__img-wrap {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--pp-color-grid);
}

.blog-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s;
}

.blog-card:hover .blog-card__img {
    transform: scale(1.04);
}

.blog-card__img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pp-color-muted);
}

.blog-card__cat {
    position: absolute;
    top: 12px;
    left: 12px;
}

.blog-card__body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card__title {
    font-family: var(--pp-font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--pp-color-ink);
    margin: 0 0 10px;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__lead {
    color: var(--pp-color-muted);
    font-size: 14px;
    line-height: 1.55;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--pp-color-muted);
    font-size: 12.5px;
    margin-top: auto;
    margin-bottom: 16px;
}

.blog-card__read {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--pp-color-pen);
    font-size: 13.5px;
    font-weight: 600;
    transition: gap .2s;
}

.blog-card:hover .blog-card__cta {
    gap: 10px;
}

/* ─── Infinite-scroll sentinel ───────────────────────────────── */
.blog-sentinel {
    display: flex;
    justify-content: center;
    padding: 32px 0;
}

.blog-sentinel.is-hidden {
    display: none;
}

.blog-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--pp-color-card-border);
    border-top-color: var(--pp-color-pen);
    border-radius: 50%;
    animation: blog-spin .8s linear infinite;
}

@keyframes blog-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ─── Article hero (full-bleed) ──────────────────────────────── */
.blog-article-hero {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-bottom: 40px;
}

.blog-article-hero__bg {
    position: relative;
    width: 100%;
    min-height: 360px;
    display: flex;
    align-items: flex-end;
    background: var(--pp-color-grid);
    background-size: cover;
    background-position: center;
}

.blog-article-hero__bg.has-image {
    min-height: 420px;
}

.blog-article-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(28, 35, 64, .25) 0%, rgba(28, 35, 64, .82) 100%);
}

.blog-article-hero__inner {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    padding: 56px 24px 44px;
}

.blog-article-hero__bg.has-image .blog-article-hero__title,
.blog-article-hero__bg.has-image .blog-article-hero__lead,
.blog-article-hero__bg.has-image .blog-article-hero__meta {
    color: #fff;
}

.blog-article-hero__bg:not(.has-image) .blog-article-hero__inner {
    padding-top: 64px;
}

.blog-article-hero__badge {
    display: inline-flex;
    margin-bottom: 18px;
}

.blog-article-hero__title {
    font-family: var(--pp-font-serif);
    font-weight: 600;
    font-size: clamp(28px, 4.5vw, 44px);
    line-height: 1.18;
    color: var(--pp-color-ink);
    margin: 0 0 16px;
    max-width: 760px;
}

.blog-article-hero__lead {
    font-size: clamp(15px, 2vw, 17px);
    color: var(--pp-color-muted);
    line-height: 1.6;
    max-width: 680px;
    margin: 0 0 20px;
}

.blog-article-hero__bg.has-image .blog-article-hero__lead {
    color: rgba(255, 255, 255, .82);
}

.blog-article-hero__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--pp-color-muted);
    font-size: 13px;
}

.blog-article-hero__meta-sep {
    opacity: .6;
}

.blog-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    max-width: 860px;
    margin: 0 auto;
    padding: 14px 24px 0;
    font-size: 13px;
    color: var(--pp-color-muted);
}

.blog-breadcrumbs a {
    color: var(--pp-color-muted);
    text-decoration: none;
}

.blog-breadcrumbs a:hover {
    color: var(--pp-color-pen);
}

.blog-breadcrumbs__sep {
    opacity: .6;
}

.blog-breadcrumbs__current {
    color: var(--pp-color-ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 260px;
}

/* ─── Article layout ─────────────────────────────────────────── */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto 60px;
}

@media (min-width: 1100px) {
    .blog-layout {
        grid-template-columns: 220px 1fr;
        max-width: 1100px;
        align-items: start;
    }

    .blog-toc-sidebar {
        order: -1;
    }
}

.blog-toc-sidebar {
    display: none;
}

@media (min-width: 1100px) {
    .blog-toc-sidebar {
        display: block;
        position: sticky;
        top: 24px;
    }
}

.blog-toc {
    background: #fff;
    border: 1px solid var(--pp-color-card-border);
    border-radius: 14px;
    padding: 20px;
}

.blog-toc__title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--pp-color-muted);
    margin: 0 0 12px;
}

.blog-toc__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.blog-toc__list a {
    display: block;
    font-size: 13.5px;
    color: var(--pp-color-muted);
    text-decoration: none;
    padding: 5px 8px;
    border-radius: 6px;
    line-height: 1.35;
    transition: background-color .15s, color .15s;
}

.blog-toc__list a:hover,
.blog-toc__list a.is-active {
    background: var(--pp-color-grid);
    color: var(--pp-color-pen-dark);
}

.blog-toc__list .toc-h3 a {
    padding-left: 18px;
    font-size: 13px;
}

/* ─── Article body ───────────────────────────────────────────── */
.blog-body {
    font-family: var(--pp-font-sans);
    color: var(--pp-color-ink);
    font-size: 17px;
    line-height: 1.75;
    word-break: break-word;
}

.blog-body h2 {
    font-family: var(--pp-font-serif);
    font-size: 26px;
    font-weight: 600;
    margin: 1.6em 0 .6em;
    line-height: 1.25;
}

.blog-body h3 {
    font-family: var(--pp-font-serif);
    font-size: 20px;
    font-weight: 600;
    margin: 1.4em 0 .5em;
}

.blog-body h4 {
    font-size: 17px;
    font-weight: 700;
    margin: 1.2em 0 .4em;
}

.blog-body p {
    margin: 0 0 1.1em;
}

.blog-body a {
    color: var(--pp-color-pen);
}

.blog-body a:hover {
    color: var(--pp-color-pen-dark);
}

.blog-body blockquote {
    border-left: 3px solid var(--pp-color-pen);
    margin: 1.5em 0;
    padding: .8em 1.2em;
    background: var(--pp-color-grid);
    border-radius: 0 10px 10px 0;
    color: var(--pp-color-ink);
    font-style: italic;
}

.blog-body blockquote cite {
    display: block;
    margin-top: .5em;
    font-size: 13px;
    font-style: normal;
    color: var(--pp-color-muted);
}

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

.blog-body li {
    margin-bottom: .4em;
}

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

.blog-body figure {
    margin: 1.5em 0;
}

.blog-body figcaption {
    color: var(--pp-color-muted);
    font-size: 13px;
    text-align: center;
    margin-top: 8px;
}

.blog-body__delimiter {
    border: none;
    border-top: 1px dashed var(--pp-color-card-border);
    margin: 2em 0;
}

.blog-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 14.5px;
}

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

.blog-body th {
    background: var(--pp-color-grid);
    color: var(--pp-color-ink);
}

.blog-body code {
    background: var(--pp-color-grid);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .9em;
    color: var(--pp-color-pen-dark);
}

.blog-body pre {
    background: var(--pp-color-ink);
    border-radius: 10px;
    padding: 16px 20px;
    overflow-x: auto;
    margin: 1.5em 0;
}

.blog-body pre code {
    background: none;
    padding: 0;
    color: #fff;
}

.blog-embed {
    margin: 1.5em 0;
}

.blog-embed__ratio {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    background: var(--pp-color-ink);
}

.blog-embed__ratio iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ─── Tags ───────────────────────────────────────────────────── */
.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 36px 0 28px;
}

.blog-tag {
    background: var(--pp-color-grid);
    border-radius: 999px;
    color: var(--pp-color-muted);
    font-size: 13px;
    padding: 5px 14px;
    text-decoration: none;
    transition: color .15s, background-color .15s;
}

.blog-tag:hover {
    background: var(--pp-color-ink);
    color: #fff;
}

/* ─── Share row ──────────────────────────────────────────────── */
.blog-share {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 24px 0;
    border-top: 1px solid var(--pp-color-card-border);
    border-bottom: 1px solid var(--pp-color-card-border);
    margin-bottom: 36px;
}

.blog-share__label {
    color: var(--pp-color-muted);
    font-size: 13.5px;
    margin-right: 4px;
}

.blog-share__btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: var(--pp-font-sans);
    transition: opacity .15s, transform .15s;
}

.blog-share__btn:hover {
    opacity: .85;
    transform: translateY(-1px);
}

.blog-share__btn--vk {
    background: #0077ff;
    color: #fff;
}

.blog-share__btn--tg {
    background: #26a5e4;
    color: #fff;
}

.blog-share__btn--copy {
    background: #fff;
    color: var(--pp-color-muted);
    border: 1px solid var(--pp-color-card-border);
}

.blog-share__btn--copy.is-copied {
    color: var(--pp-color-green);
    border-color: var(--pp-color-green);
}

/* ─── In-article CTA ─────────────────────────────────────────── */
.blog-cta-block {
    background: var(--pp-color-ink);
    border-radius: 16px;
    padding: 32px;
    margin-top: 44px;
}

.blog-cta-block__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.blog-cta-block__title {
    font-family: var(--pp-font-serif);
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 6px;
}

.blog-cta-block__sub {
    color: rgba(255, 255, 255, .7);
    font-size: 14.5px;
    margin: 0;
}

/* ─── Related articles ───────────────────────────────────────── */
.blog-related {
    max-width: 900px;
    margin: 0 auto;
}

.blog-related__title {
    font-family: var(--pp-font-serif);
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 20px;
}

.blog-related__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}

/* ─── Back to top ────────────────────────────────────────────── */
.blog-to-top {
    position: fixed;
    bottom: 28px;
    right: 24px;
    z-index: 1040;
    background: #fff;
    border: 1px solid var(--pp-color-card-border);
    color: var(--pp-color-ink);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity .25s, transform .25s, border-color .15s, color .15s;
}

.blog-to-top.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.blog-to-top:hover {
    border-color: var(--pp-color-pen);
    color: var(--pp-color-pen);
}

@media (max-width: 576px) {
    .blog-to-top {
        bottom: 16px;
        right: 16px;
    }
}