/* ============================================================
   TechPulse Pro — Main Layout CSS
   Hero, single posts, archives, search, 404.
   Mobile-first. Zero floats. CSS Grid + Flexbox only.
   ============================================================ */


/* ============================================================
   HERO SECTION
   ============================================================ */

.hero-section {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-8) 0;
    margin-bottom: var(--space-8);
}

.hero-section__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 900px) {
    .hero-section__inner {
        grid-template-columns: 1fr 340px;
        gap: var(--space-8);
        align-items: stretch;
    }
}

/* Main Hero Card */
.hero-card {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--color-heading);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

@media (min-width: 900px) {
    .hero-card { min-height: 480px; }
}

.hero-card__image-link { position: absolute; inset: 0; }

.hero-card__image {
    position: absolute;
    inset: 0;
}

.hero-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0,0,0,0.85) 0%,
        rgba(0,0,0,0.4) 50%,
        rgba(0,0,0,0.1) 100%
    );
}

.hero-card__content {
    position: relative;
    z-index: 1;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .hero-card__content { padding: var(--space-8); }
}

.hero-card__cat {
    align-self: flex-start;
}

.hero-card__title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
    font-weight: var(--font-bold);
    color: #fff;
    line-height: var(--leading-snug);
    letter-spacing: -0.02em;
    margin: 0;
}

.hero-card__title a {
    color: inherit;
    text-decoration: none;
}

.hero-card__title a:hover { color: rgba(255,255,255,0.85); }

.hero-card__excerpt {
    color: rgba(255,255,255,0.8);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hero-card__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.75);
}

.hero-card__avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.4);
    object-fit: cover;
}

.hero-card__author { font-weight: var(--font-medium); color: #fff; }
.hero-card__sep    { opacity: 0.5; }

/* Sub-featured Posts Stack */
.hero-sub-posts {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.hero-sub-card {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: var(--space-4);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: var(--space-4);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.hero-sub-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

@media (min-width: 480px) and (max-width: 899px) {
    .hero-sub-posts {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
}

.hero-sub-card__image {
    width: 100%;
    aspect-ratio: 3/2;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--surface-2);
}

.hero-sub-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.hero-sub-card:hover .hero-sub-card__image img {
    transform: scale(1.05);
}

.hero-sub-card__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
}

.hero-sub-card__title {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--heading);
    line-height: var(--leading-snug);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hero-sub-card__title a {
    color: inherit;
    text-decoration: none;
}

.hero-sub-card__title a:hover { color: var(--color-primary); }

.hero-sub-card__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--text-subtle);
    margin-top: auto;
}


/* ============================================================
   SITE CONTENT LAYOUT (full-width safe)
   ============================================================ */

.site-content { padding-top: 0; }

.main-content { min-width: 0; } /* Prevent grid blowout */

.section {
    margin-bottom: var(--space-16);
}

/* No-posts notice */
.no-posts-notice {
    text-align: center;
    padding: var(--space-16) var(--space-8);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
}

.no-posts-notice h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}

.no-posts-notice p {
    color: var(--text-muted);
    margin-bottom: var(--space-6);
}

/* Archive Title */
.archive-title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    font-weight: var(--font-bold);
    color: var(--heading);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.archive-description {
    color: var(--text-muted);
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    max-width: 600px;
}

/* ============================================================
   SINGLE POST LAYOUT
   ============================================================ */

.single-post-wrap {
    padding: var(--space-8) 0;
}

/* Post Header */
.post-header {
    margin-bottom: var(--space-8);
}

.post-header__cats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.post-header__title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-2xl), 4vw, var(--text-5xl));
    font-weight: var(--font-extrabold);
    color: var(--heading);
    line-height: var(--leading-tight);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
}

.post-header__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-6);
}

.post-header__author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.post-header__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--border);
}

.post-header__author-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.post-header__author-name {
    font-weight: var(--font-semibold);
    color: var(--heading);
    font-size: var(--text-sm);
    text-decoration: none;
}

.post-header__author-name:hover { color: var(--color-primary); }

.post-header__author-meta {
    font-size: var(--text-xs);
    color: var(--text-subtle);
    display: flex;
    gap: var(--space-2);
}

/* Post Toolbar (TTS + Like) */
.post-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.post-toolbar__left,
.post-toolbar__right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* Listen Button */
.btn-listen {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-listen:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
.btn-listen.is-playing { background: var(--color-danger); }

/* Like Button */
.btn-like {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--surface);
    color: var(--text-muted);
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-like:hover {
    border-color: #ef4444;
    color: #ef4444;
    transform: scale(1.05);
}

.btn-like.is-liked {
    background: #fef2f2;
    border-color: #ef4444;
    color: #ef4444;
}

[data-theme="dark"] .btn-like.is-liked {
    background: rgba(239,68,68,0.12);
}

.btn-like svg { transition: transform var(--transition-bounce); }
.btn-like:hover svg, .btn-like.is-liked svg { transform: scale(1.2); }
.btn-like.is-liked svg { fill: #ef4444; }

/* Share buttons */
.share-buttons {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.share-btn--twitter  { background: rgba(29,161,242,0.1); color: #1da1f2; }
.share-btn--facebook { background: rgba(24,119,242,0.1); color: #1877f2; }
.share-btn--copy     { background: var(--surface-2); color: var(--text-muted); }
.share-btn:hover     { filter: brightness(1.1); transform: translateY(-1px); }

/* Post Featured Image */
.post-featured-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    margin-bottom: var(--space-8);
    aspect-ratio: 16/9;
    background: var(--surface-2);
}

.post-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Post Content */
.post-content {
    font-size: var(--text-lg);
    line-height: var(--leading-loose);
    color: var(--text);
    max-width: 100%;
}

.post-content > * { margin-bottom: var(--space-6); }
.post-content > *:last-child { margin-bottom: 0; }

.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
    color: var(--heading);
}

.post-content img {
    border-radius: var(--radius-xl);
    max-width: 100%;
    height: auto;
}

.post-content ul,
.post-content ol {
    list-style: revert;
    padding-left: var(--space-6);
}

.post-content li { margin-bottom: var(--space-2); }

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius-lg);
    overflow: hidden;
    font-size: var(--text-sm);
    margin: var(--space-6) 0;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.post-content table th {
    background: var(--color-primary);
    color: #fff;
    font-weight: var(--font-semibold);
    padding: var(--space-3) var(--space-4);
    text-align: left;
    white-space: nowrap;
}

.post-content table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.post-content table tr:last-child td { border-bottom: none; }

.post-content table tr:nth-child(even) td {
    background: var(--surface-2);
}

/* Post Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    margin: var(--space-8) 0;
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}

.post-tags__label {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    margin-right: var(--space-1);
}

/* Post Navigation */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin: var(--space-10) 0;
}

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

.post-nav-link {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-5);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.post-nav-link:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

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

.post-nav-link__dir {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
}

.post-nav-link__title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--heading);
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* ============================================================
   SEARCH PAGE
   ============================================================ */

.search-page-header {
    padding: var(--space-10) 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-8);
}

.search-page-title {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    color: var(--heading);
    margin-bottom: var(--space-4);
}

.search-page-title span {
    color: var(--color-primary);
}

.search-count {
    font-size: var(--text-sm);
    color: var(--text-muted);
}


/* ============================================================
   404 PAGE
   ============================================================ */

.error-404-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-20) var(--space-8);
    min-height: 60vh;
}

.error-404-page__code {
    font-family: var(--font-display);
    font-size: clamp(6rem, 20vw, 12rem);
    font-weight: var(--font-extrabold);
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.05em;
    margin-bottom: var(--space-4);
}

.error-404-page__title {
    font-size: clamp(var(--text-xl), 4vw, var(--text-3xl));
    color: var(--heading);
    margin-bottom: var(--space-4);
}

.error-404-page__desc {
    color: var(--text-muted);
    font-size: var(--text-lg);
    max-width: 400px;
    margin-bottom: var(--space-8);
}

.error-404-page__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
    margin-bottom: var(--space-8);
}

.error-404-page__search {
    width: 100%;
    max-width: 400px;
}

.error-404-page__search .search-form {
    display: flex;
    gap: var(--space-2);
}

.error-404-page__search input[type="search"] {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    color: var(--text);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast);
    min-width: 0;
}

.error-404-page__search input[type="search"]:focus {
    border-color: var(--color-primary);
    outline: none;
}

.error-404-page__search input[type="submit"] {
    padding: var(--space-3) var(--space-5);
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-semibold);
    cursor: pointer;
    white-space: nowrap;
}


/* ============================================================
   COPY CODE BUTTON (in post content)
   ============================================================ */

.copy-code-btn {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.copy-code-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }
.copy-code-btn.is-copied { background: var(--color-success); color: #fff; border-color: var(--color-success); }


/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */

#toast-container {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    width: max-content;
    max-width: calc(100vw - 2rem);
}

.toast {
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: #fff;
    background: var(--color-heading);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    transform: translateY(12px) scale(0.95);
    transition: all var(--transition-base);
    pointer-events: all;
    text-align: center;
    white-space: nowrap;
}

.toast.is-visible { opacity: 1; transform: translateY(0) scale(1); }
.toast--success { background: var(--color-success); }
.toast--error   { background: var(--color-danger); }
.toast--info    { background: var(--color-primary); }


/* ============================================================
   CARD ANIMATIONS
   ============================================================ */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.is-animated {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delay for grid items */
.posts-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.08s; }
.posts-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.16s; }
.posts-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.08s; }
.posts-grid .animate-on-scroll:nth-child(5) { transition-delay: 0.16s; }
.posts-grid .animate-on-scroll:nth-child(6) { transition-delay: 0.24s; }


/* ============================================================
   STICKY HEADER SCROLLED STATE
   ============================================================ */

.site-header.is-scrolled {
    box-shadow: var(--shadow-md);
}


/* ============================================================
   MOBILE MENU SEARCH FORM
   ============================================================ */

.mobile-menu__search .search-form {
    display: flex;
    gap: var(--space-2);
}

.mobile-menu__search input[type="search"] {
    flex: 1;
    min-width: 0;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-2);
    color: var(--text);
    font-size: var(--text-sm);
}

.mobile-menu__search input[type="submit"] {
    padding: var(--space-2) var(--space-3);
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    white-space: nowrap;
}


/* ============================================================
   RESPONSIVE CONTENT WIDTH FIXES
   ============================================================ */

/* Prevent overflow on small screens */
@media (max-width: 480px) {
    .container { padding-inline: var(--space-4); }

    .hero-card__content { padding: var(--space-5); }

    .post-header__meta { flex-direction: column; align-items: flex-start; }

    .post-toolbar { flex-direction: column; }
    .post-toolbar__left,
    .post-toolbar__right { width: 100%; justify-content: center; }

    .section-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .post-navigation { grid-template-columns: 1fr; }

    .posts-grid { grid-template-columns: 1fr; }

    .footer-bottom__inner { flex-direction: column; text-align: center; }

    .footer-legal-menu { justify-content: center; }
}

/* ============================================================
   RELATED POSTS SECTION
   ============================================================ */

.related-posts {
    margin: var(--space-12) 0;
    padding-top: var(--space-10);
    border-top: 2px solid var(--border);
}

.related-posts__header { margin-bottom: var(--space-6); }

.related-posts__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--heading);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.related-posts__title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 1.1em;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.related-posts__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
}

@media (min-width: 540px) { .related-posts__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .related-posts__grid { grid-template-columns: repeat(3, 1fr); } }

.related-post-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    box-shadow: var(--shadow-card);
}

.related-post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }

.related-post-card__image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--surface-2);
    position: relative;
    flex-shrink: 0;
}

.related-post-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.related-post-card:hover .related-post-card__image img { transform: scale(1.05); }

.related-post-card__cat {
    position: absolute;
    top: var(--space-2);
    left: var(--space-2);
}

.related-post-card__body {
    padding: var(--space-4) var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    flex: 1;
}

.related-post-card__title {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--heading);
    line-height: var(--leading-snug);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-card__title a { color: inherit; text-decoration: none; }
.related-post-card__title a:hover { color: var(--color-primary); }

.related-post-card__excerpt {
    font-size: var(--text-xs);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.related-post-card__meta {
    font-size: var(--text-xs);
    color: var(--text-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: var(--space-2);
}

/* ============================================================
   SOCIAL SHARE BLOCK
   ============================================================ */

.social-share-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: var(--space-5) var(--space-6);
    margin: var(--space-8) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .social-share-block { flex-direction: row; align-items: center; }
}

.social-share-block__label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--heading);
    white-space: nowrap;
    flex-shrink: 0;
}

.social-share-block__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.social-share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: color-mix(in srgb, var(--share-color, #1a73e8) 10%, transparent);
    color: var(--share-color, var(--color-primary));
    border-color: color-mix(in srgb, var(--share-color, #1a73e8) 25%, transparent);
    white-space: nowrap;
}

.social-share-btn:hover {
    background: var(--share-color, var(--color-primary));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--share-color, #1a73e8) 30%, transparent);
}

.social-share-btn svg { flex-shrink: 0; }

.social-share-btn--copy {
    --share-color: #64748b;
}

.social-share-btn.is-copied {
    background: var(--color-success);
    border-color: var(--color-success);
    color: #fff;
}

@media (max-width: 480px) {
    .social-share-btn__label { display: none; }
    .social-share-btn { padding: var(--space-2); }
}

/* Dark mode */
[data-theme="dark"] .related-post-card { background: var(--color-dark-surface); border-color: var(--color-dark-border); }
[data-theme="dark"] .social-share-block { background: var(--color-dark-surface); border-color: var(--color-dark-border); }