/* ============================================================
   SINGLE POST PAGE — single.php
   ============================================================ */

/* ── Reading progress ────────────────────────────────────── */
.tg-article-progress {
    position: fixed;
    top: 84px; left: 0;
    height: 2px;
    width: 0;
    background: var(--brand-blue);
    z-index: 999;
    transition: width 0.05s linear;
}


/* ── HERO ────────────────────────────────────────────────── */
body.page-single-post .tg-article {
    position: relative;
    z-index: 1;
}

.tg-article-hero {
    padding: 64px 56px 32px;
    max-width: 920px;
    margin: 0 auto;
}

.tg-article-meta-top {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.tg-article-date,
.tg-article-rt {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.tg-article-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 22px;
}

.tg-article-deck {
    font-family: var(--font-serif);
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 40px;
}


/* ── AUTHOR + SHARE ROW ──────────────────────────────────── */
.tg-article-author-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 16px;
}

.tg-article-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.tg-author-avatar {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    color: var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 600;
}

.tg-article-author-name {
    font-family: var(--font-heading);
    font-size: 0.96rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.005em;
}

.tg-article-author-role {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.tg-article-share {
    display: flex;
    align-items: center;
    gap: 10px;
}

.tg-article-share-label {
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 500;
}

.tg-article-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
    padding: 0;
}

.tg-article-share-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}


/* ── FEATURED IMAGE ──────────────────────────────────────── */
.tg-article-feat-img {
    margin: 0 0 8px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.tg-article-feat-img img { width: 100%; height: auto; display: block; }


/* ── ARTICLE LAYOUT ──────────────────────────────────────── */
.tg-article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 56px;
    max-width: 1120px;
    margin: 32px auto 0;
    padding: 0 56px;
    align-items: start;
}


/* ── ARTICLE BODY ────────────────────────────────────────── */
.tg-article-content {
    font-family: var(--font-serif);
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.tg-article-content > p:first-of-type::first-letter {
    font-family: var(--font-heading);
    font-size: 3.6rem;
    line-height: 0.9;
    float: left;
    margin: 6px 14px 0 0;
    color: var(--accent-primary);
    font-weight: 600;
}

.tg-article-content p {
    margin-bottom: 1.6em;
    color: var(--text-secondary);
}

.tg-article-content h2 {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 2.4em 0 0.8em;
    letter-spacing: -0.015em;
    padding-top: 18px;
    border-top: 2px solid var(--accent-primary);
    line-height: 1.25;
}

.tg-article-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.8em 0 0.6em;
    letter-spacing: -0.01em;
}

.tg-article-content h4 {
    font-family: var(--font-heading);
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.4em 0 0.5em;
}

.tg-article-content a {
    color: var(--accent-primary);
    text-decoration: underline;
    text-decoration-color: rgba(74, 127, 227, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.15s;
}

.tg-article-content a:hover {
    text-decoration-color: var(--accent-primary);
}

.tg-article-content strong { color: var(--text-primary); font-weight: 600; }
.tg-article-content em { color: var(--text-primary); font-style: italic; }

.tg-article-content blockquote {
    margin: 2em 0;
    padding: 8px 0 8px 24px;
    border-left: 3px solid var(--accent-primary);
    font-style: italic;
    color: var(--text-primary);
    font-size: 1.12rem;
}

.tg-article-content blockquote p { margin-bottom: 0.6em; color: var(--text-primary); }
.tg-article-content blockquote cite {
    display: block;
    margin-top: 8px;
    font-family: var(--font-body);
    font-size: 0.88rem;
    color: var(--text-muted);
    font-style: normal;
}

.tg-article-content ul,
.tg-article-content ol {
    margin: 1.4em 0 1.6em 1.4em;
    padding-left: 0.4em;
}

.tg-article-content li {
    margin-bottom: 0.6em;
    color: var(--text-secondary);
    line-height: 1.75;
}

.tg-article-content code {
    font-family: var(--font-mono);
    font-size: 0.92em;
    background: var(--bg-card);
    color: var(--accent-primary);
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
}

.tg-article-content pre {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px 24px;
    margin: 1.6em 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.65;
}

.tg-article-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: var(--text-primary);
}

.tg-article-content img {
    max-width: 100%;
    height: auto;
    margin: 1.6em 0;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.tg-article-content figure { margin: 1.6em 0; }
.tg-article-content figcaption {
    font-family: var(--font-body);
    font-size: 0.86rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 10px;
    font-style: italic;
}

.tg-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    font-family: var(--font-body);
    font-size: 0.92rem;
}

.tg-article-content th,
.tg-article-content td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.tg-article-content th {
    font-weight: 600;
    color: var(--text-primary);
    background: rgba(74, 127, 227, 0.04);
}

/* Callouts */
.tg-article-content .tg-callout-info,
.tg-article-content .tg-callout-warn,
.tg-article-content .tg-callout-danger {
    padding: 16px 20px;
    margin: 1.8em 0;
    border-radius: 6px;
    font-family: var(--font-body);
    border-left: 3px solid;
}

.tg-article-content .tg-callout-info {
    background: rgba(74, 127, 227, 0.06);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.tg-article-content .tg-callout-warn {
    background: rgba(229, 166, 69, 0.06);
    border-color: var(--accent-amber);
}

.tg-article-content .tg-callout-danger {
    background: rgba(255, 101, 101, 0.06);
    border-color: var(--accent-coral);
}


/* ── SIDEBAR (TOC) ───────────────────────────────────────── */
.tg-article-sidebar {
    position: sticky;
    top: 108px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.tg-article-toc-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 22px 24px;
}

.tg-article-toc-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    letter-spacing: -0.005em;
}

.tg-article-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tg-article-toc-list a {
    font-family: var(--font-body);
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.45;
    transition: color 0.15s;
}

.tg-article-toc-list a:hover { color: var(--accent-primary); }
.tg-article-toc-h3 { padding-left: 14px; }
.tg-article-toc-h3 a { font-size: 0.82rem; color: var(--text-muted); }

.tg-article-toc-empty {
    font-family: var(--font-body);
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.tg-article-toc-desc {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.tg-article-toc-cta {
    width: 100%;
    justify-content: center;
}


/* ── ARTICLE FOOTER ──────────────────────────────────────── */
.tg-article-footer {
    max-width: 1120px;
    margin: 56px auto 0;
    padding: 32px 56px 0;
    border-top: 1px solid var(--border);
}

.tg-article-footer-share {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
}

.tg-article-footer-label {
    font-family: var(--font-heading);
    font-size: 0.96rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.005em;
}


/* ── RELATED ARTICLES ────────────────────────────────────── */
.tg-article-related {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-top: 80px;
}

.tg-article-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    max-width: 1280px;
    margin: 0 auto;
}

.tg-article-related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 26px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, background 0.2s;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tg-article-related-card:hover {
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
}

.tg-article-related-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.tg-article-related-date {
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.tg-article-related-title {
    font-family: var(--font-heading);
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.35;
    letter-spacing: -0.005em;
}

.tg-article-related-excerpt {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.tg-article-related-cta {
    font-family: var(--font-body);
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--accent-primary);
}


/* ── END-OF-ARTICLE CTA ──────────────────────────────────── */
.tg-article-cta {
    padding: 96px 56px 112px;
    text-align: center;
    background: var(--bg-void);
    position: relative;
    z-index: 1;
}

.tg-article-cta-title {
    font-family: var(--font-heading);
    font-size: clamp(1.85rem, 3.4vw, 2.6rem);
    font-weight: 600;
    margin-bottom: 18px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.tg-article-cta-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.tg-article-cta-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}


/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
    .tg-article-progress { top: 84px; }
    .tg-article-hero { padding: 56px 40px 28px; }
    .tg-article-layout { grid-template-columns: 1fr; gap: 40px; padding: 0 40px; }
    .tg-article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
    .tg-article-toc-card { flex: 1; min-width: 280px; }
    .tg-article-footer { padding: 32px 40px 0; }
    .tg-article-related-grid { grid-template-columns: 1fr 1fr; }
    .tg-article-cta { padding: 72px 40px 96px; }
}

@media (max-width: 768px) {
    .tg-article-progress { top: 68px; }
    .tg-article-hero { padding: 32px 20px 20px; }
    .tg-article-title { font-size: clamp(1.7rem, 7.5vw, 2.2rem); }
    .tg-article-deck { font-size: 1rem; margin-bottom: 28px; }
    .tg-article-author-row { padding: 16px 0; margin-bottom: 28px; }

    .tg-article-layout { padding: 0 20px; gap: 32px; }
    .tg-article-sidebar { flex-direction: column; }
    .tg-article-toc-card { min-width: 100%; padding: 20px; }

    .tg-article-content { font-size: 1rem; line-height: 1.75; }
    .tg-article-content > p:first-of-type::first-letter { font-size: 2.8rem; margin: 4px 10px 0 0; }
    .tg-article-content h2 { font-size: 1.45rem; padding-top: 16px; }
    .tg-article-content h3 { font-size: 1.18rem; }
    .tg-article-content blockquote { padding-left: 18px; font-size: 1.04rem; }
    .tg-article-content pre { padding: 16px 18px; font-size: 0.84rem; }

    .tg-article-footer { padding: 28px 20px 0; margin-top: 40px; }
    .tg-article-footer-share { flex-direction: column; align-items: flex-start; }

    .tg-article-related-grid { grid-template-columns: 1fr; }
    .tg-article-related-card { padding: 22px; }

    .tg-article-cta { padding: 56px 20px 72px; }
    .tg-article-cta-actions { flex-direction: column; align-items: stretch; }
    .tg-article-cta-actions .tg-btn-primary,
    .tg-article-cta-actions .tg-btn-secondary { width: 100%; }
}

@media (max-width: 480px) {
    .tg-article-hero,
    .tg-article-layout,
    .tg-article-footer,
    .tg-article-cta {
        padding-left: 16px; padding-right: 16px;
    }
}