/* =====================================================================
   post.css — pojedynczy wpis (/blog/{slug})
   ---------------------------------------------------------------------
   Arkusz wydzielony z gotowej podstrony `blog/post.html`. Zawiera nagłówek
   wpisu, pasek postępu czytania, treść artykułu (nagłówki, listy, kod,
   wyróżnienia), bloki kodu ze składnią, pasek udostępniania, ramkę autora,
   powiązane wpisy i spis treści.

   Tokeny motywu (kolory, fonty) i style wspólne są w `site.css`, który
   ładujemy PRZED tym plikiem. Reguły powtarzające się między arkuszami
   zostały z tego pliku usunięte, żeby nie tworzyć dwóch prawd.
   ===================================================================== */

.brand-brace { color: var(--accent); font-family: var(--font-mono); font-weight: 700; }

    .nav-link {
      font-family: var(--font-display);
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-muted) !important;
      padding: 0.4rem 0.85rem !important;
      border-radius: 6px;
      transition: color var(--transition), background var(--transition);
    }

    .nav-link:hover { color: var(--text-primary) !important; background: var(--accent-glow); }

    /* ─── Shared utils ──────────────────────────────────────────────────── */
    .btn-accent {
      background: var(--accent); color: #000;
      font-family: var(--font-display); font-weight: 600; font-size: 0.875rem;
      padding: 0.65rem 1.5rem; border-radius: 8px; border: none;
      transition: all var(--transition); letter-spacing: 0.01em;
      text-decoration: none; display: inline-flex; align-items: center; gap: .4rem;
    }

    .btn-ghost {
      background: transparent; color: var(--text-primary);
      font-family: var(--font-display); font-weight: 500; font-size: 0.875rem;
      padding: 0.65rem 1.5rem; border-radius: 8px; border: 1px solid var(--border-color);
      transition: all var(--transition); text-decoration: none; display: inline-flex; align-items: center; gap: .4rem;
    }

    /* ─── Hero / Post header ────────────────────────────────────────────── */
    .post-hero {
      padding-top: 120px;
      padding-bottom: 4rem;
      position: relative;
      overflow: hidden;
    }

    .post-hero-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
      background-size: 48px 48px;
      opacity: 0.25;
      mask-image: radial-gradient(ellipse 90% 100% at 50% 0%, black 30%, transparent);
      -webkit-mask-image: radial-gradient(ellipse 90% 100% at 50% 0%, black 30%, transparent);
    }

    .post-tag {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: var(--accent);
      background: var(--accent-glow);
      border: 1px solid rgba(0,229,160,0.25);
      padding: 0.25rem 0.7rem;
      border-radius: 20px;
      text-decoration: none;
      transition: background var(--transition);
    }
    .post-tag:hover { background: rgba(0,229,160,0.25); color: var(--accent); }

    .post-title {
      font-size: clamp(1.9rem, 5vw, 3rem);
      font-weight: 800;
      letter-spacing: -0.035em;
      line-height: 1.1;
      margin: 1rem 0 1.25rem;
    }

    .post-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 1.25rem;
      font-size: 0.8rem;
      color: var(--text-muted);
      font-family: var(--font-mono);
    }

    .post-meta-item {
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .author-avatar {
      width: 36px; height: 36px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      display: flex; align-items: center; justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    /* ─── Progress bar ──────────────────────────────────────────────────── */
    .reading-progress {
      position: fixed;
      top: 0; left: 0;
      height: 2px;
      background: var(--accent);
      width: 0%;
      z-index: 9999;
      transition: width 0.1s linear;
      box-shadow: 0 0 8px var(--accent);
    }

    /* ─── Layout ────────────────────────────────────────────────────────── */
    .post-layout {
      padding-bottom: 6rem;
    }

    /* ─── TOC ───────────────────────────────────────────────────────────── */
    .toc-wrap {
      position: sticky;
      top: 90px;
    }

    .toc-title {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
    }

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

    .toc-list li { margin-bottom: 0.1rem; }

    .toc-list a {
      font-size: 0.8rem;
      color: var(--text-muted);
      text-decoration: none;
      display: block;
      padding: 0.35rem 0.6rem;
      border-left: 2px solid var(--border-color);
      transition: all var(--transition);
      line-height: 1.4;
    }

    .toc-list a:hover,
    .toc-list a.active {
      color: var(--accent);
      border-left-color: var(--accent);
      background: var(--accent-glow);
      border-radius: 0 4px 4px 0;
    }

    .toc-list .toc-h3 a { padding-left: 1.25rem; font-size: 0.76rem; }

    /* ─── Article prose ─────────────────────────────────────────────────── */
    .post-content {
      font-size: 1.025rem;
      line-height: 1.85;
      color: var(--text-primary);
    }

    .post-content h2 {
      font-size: 1.55rem;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin: 2.75rem 0 1rem;
      padding-top: 0.5rem;
      color: var(--text-primary);
    }

    .post-content h2::before {
      content: '// ';
      color: var(--accent);
      font-family: var(--font-mono);
      font-size: 0.9em;
      font-weight: 400;
    }

    .post-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin: 2rem 0 0.75rem;
      color: var(--text-primary);
    }

    .post-content p {
      margin-bottom: 1.4rem;
      color: var(--text-primary);
      opacity: 0.9;
    }

    .post-content a {
      color: var(--accent);
      text-decoration: underline;
      text-decoration-color: rgba(0,229,160,0.3);
      text-underline-offset: 3px;
      transition: text-decoration-color var(--transition);
    }
    .post-content a:hover { text-decoration-color: var(--accent); }

    .post-content ul,
    .post-content ol {
      padding-left: 1.5rem;
      margin-bottom: 1.4rem;
    }

    .post-content li {
      margin-bottom: 0.5rem;
      opacity: 0.9;
    }

    .post-content li::marker { color: var(--accent); }

    /* ─── Inline code ───────────────────────────────────────────────────── */
    .post-content code:not(pre code) {
      font-family: var(--font-mono);
      font-size: 0.825em;
      background: var(--code-bg);
      border: 1px solid var(--code-border);
      color: var(--accent);
      padding: 0.15em 0.45em;
      border-radius: 4px;
    }

    /* ─── Code block ────────────────────────────────────────────────────── */
    .code-block {
      background: var(--code-bg);
      border: 1px solid var(--code-border);
      border-radius: var(--radius-card);
      margin: 1.75rem 0;
      overflow: hidden;
    }

    .code-block-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.6rem 1rem;
      border-bottom: 1px solid var(--code-border);
      background: rgba(0,0,0,0.2);
    }

    .code-lang {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: var(--text-muted);
      letter-spacing: 0.05em;
    }

    .code-dots { display: flex; gap: 5px; }
    .code-dots span {
      width: 10px; height: 10px;
      border-radius: 50%;
      display: inline-block;
    }

    .code-copy {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      color: var(--text-muted);
      background: transparent;
      border: 1px solid var(--code-border);
      border-radius: 4px;
      padding: 0.2rem 0.6rem;
      cursor: pointer;
      transition: all var(--transition);
    }
    .code-copy:hover { border-color: var(--accent); color: var(--accent); }
    .code-copy.copied { color: var(--accent); border-color: var(--accent); }

    .code-block pre {
      margin: 0;
      padding: 1.25rem 1.5rem;
      overflow-x: auto;
      font-family: var(--font-mono);
      font-size: 0.83rem;
      line-height: 1.65;
    }

    /* Syntax highlight tokens */
    .tk-comment  { color: #4b5563; font-style: italic; }
    .tk-keyword  { color: #c084fc; }
    .tk-type     { color: #60a5fa; }
    .tk-string   { color: #fb923c; }
    .tk-method   { color: var(--accent); }
    .tk-number   { color: #f472b6; }
    .tk-prop     { color: #e2e8f0; }

    /* ─── Callout / Blockquote ──────────────────────────────────────────── */
    .callout {
      border-left: 3px solid var(--accent);
      background: var(--accent-glow);
      border-radius: 0 var(--radius-card) var(--radius-card) 0;
      padding: 1rem 1.25rem;
      margin: 1.75rem 0;
      font-size: 0.925rem;
    }

    .callout-warn {
      border-left-color: #f59e0b;
      background: rgba(245,158,11,0.08);
    }

    .callout-label {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-bottom: 0.4rem;
      font-weight: 700;
    }

    .callout .callout-label { color: var(--accent); }
    .callout-warn .callout-label { color: #f59e0b; }

    .callout p:last-child { margin-bottom: 0; }

    /* ─── Image ─────────────────────────────────────────────────────────── */
    .post-image {
      border-radius: var(--radius-card);
      border: 1px solid var(--border-color);
      width: 100%;
      margin: 1.75rem 0;
      display: block;
    }

    .post-image-placeholder {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      height: 340px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 0.75rem;
      margin: 1.75rem 0;
      color: var(--text-muted);
      font-size: 0.8rem;
      font-family: var(--font-mono);
    }

    /* ─── Share ─────────────────────────────────────────────────────────── */
    .share-strip {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-wrap: wrap;
      padding: 1.5rem 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      margin: 3rem 0;
    }

    .share-label {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-muted);
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-right: 0.5rem;
    }

    .share-btn {
      display: inline-flex; align-items: center; gap: 0.4rem;
      font-size: 0.8rem; font-weight: 600;
      padding: 0.45rem 0.9rem;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      background: transparent;
      color: var(--text-muted);
      cursor: pointer;
      transition: all var(--transition);
      text-decoration: none;
    }
    .share-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

    /* ─── Author box ────────────────────────────────────────────────────── */
    .author-box {
      padding: 1.75rem;
      display: flex;
      gap: 1.25rem;
      align-items: flex-start;
    }

    .author-box-avatar {
      width: 64px; height: 64px;
      border-radius: 50%;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      display: flex; align-items: center; justify-content: center;
      font-size: 2rem;
      flex-shrink: 0;
    }

    .author-box-name {
      font-weight: 700;
      font-size: 1rem;
      letter-spacing: -0.02em;
      margin-bottom: 0.25rem;
    }

    .author-box-role {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: var(--accent);
      margin-bottom: 0.6rem;
    }

    .author-box-bio {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin: 0;
    }

    /* ─── Related posts ─────────────────────────────────────────────────── */
    .related-title {
      font-size: 1.3rem;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 1.5rem;
    }

    .related-card {
      padding: 1.25rem;
      text-decoration: none;
      color: var(--text-primary);
      display: block;
      height: 100%;
    }

    .related-card:hover { color: var(--text-primary); }

    .related-card .r-tag {
      font-family: var(--font-mono);
      font-size: 0.68rem;
      color: var(--accent);
      margin-bottom: 0.5rem;
      display: block;
    }

    .related-card h4 {
      font-size: 0.9rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.4;
      margin-bottom: 0.5rem;
    }

    .related-card p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* ─── Comments placeholder ──────────────────────────────────────────── */
    .comments-placeholder {
      padding: 2rem;
      text-align: center;
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* ─── Sidebar widgets ───────────────────────────────────────────────── */
    .sidebar-widget {
      padding: 1.25rem;
      margin-bottom: 1.25rem;
    }

    .sidebar-widget-title {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 1rem;
      padding-bottom: 0.6rem;
      border-bottom: 1px solid var(--border-color);
    }

    .newsletter-input {
      background: var(--bg-primary) !important;
      border: 1px solid var(--border-color) !important;
      color: var(--text-primary) !important;
      border-radius: 8px;
      font-family: var(--font-display);
      font-size: 0.82rem;
      padding: 0.55rem 0.85rem;
      width: 100%;
      margin-bottom: 0.6rem;
      transition: border-color var(--transition);
      outline: none;
    }
    .newsletter-input:focus { border-color: var(--accent) !important; box-shadow: 0 0 0 3px var(--accent-glow) !important; }

    .sidebar-link {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      text-decoration: none;
      color: var(--text-muted);
      font-size: 0.82rem;
      padding: 0.45rem 0;
      border-bottom: 1px solid var(--border-color);
      transition: color var(--transition);
    }
    .sidebar-link:last-child { border-bottom: none; }
    .sidebar-link:hover { color: var(--accent); }
    .sidebar-link-date { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); }

    /* ─── Footer ────────────────────────────────────────────────────────── */
    footer {
      padding: 2rem 0;
      border-top: 1px solid var(--border-color);
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    [id] { scroll-margin-top: 90px; }
    .post-content img { max-width: 100%; height: auto; border-radius: .75rem; }
    .post-content figure { margin: 1.5rem 0; }
    .article-cover { width: 100%; }
    .post-content figcaption { font-size: .85rem; color: var(--text-muted); margin-top: .5rem; }
    .post-content pre { overflow-x: auto; }
    .mobile-toc { padding: 1rem; border: 1px solid var(--border-color); border-radius: .75rem; margin-bottom: 2rem; }
    .mobile-toc summary { cursor: pointer; font-weight: 600; }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
    }
    .fade-up { animation: fadeUp 0.6s cubic-bezier(0.4,0,0.2,1) both; }

    @media (max-width: 991px) {
      .toc-wrap { display: none; }
    }