/* ============================================================
   Daniel Polo — Blog
   List (search/filter/sort), single-post article, comments.
   Built on app.css design tokens; loaded only on blog.html / post.html.
   ============================================================ */

/* ---------- Blog list header + controls ---------- */
.blog-controls {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin: 28px 0 22px;
}
.blog-search {
  flex: 1 1 240px; min-width: 0;
  font-family: var(--font-sans); font-size: 0.95rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 11px 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.blog-search::placeholder { color: var(--muted); }
.blog-search:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.blog-sort {
  font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 6px 12px; cursor: pointer; margin-left: auto;
}

/* ---------- Topic filter (compact single-select dropdown) ---------- */
.topic-filter { position: relative; }
.topic-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 6px 12px; cursor: pointer;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.topic-btn:hover, .topic-filter.open .topic-btn { border-color: var(--accent); }
.topic-filter.open .topic-btn { box-shadow: 0 0 0 3px var(--accent-soft); }
.tf-label {
  font-size: 0.72rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.tf-value { color: var(--ink); white-space: nowrap; max-width: 11rem; overflow: hidden; text-overflow: ellipsis; }
.tf-caret { width: 14px; height: 14px; flex: none; color: var(--muted); transition: transform 0.18s ease; }
.topic-filter.open .tf-caret { transform: rotate(180deg); }

.topic-menu {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 30;
  min-width: 220px; max-width: min(300px, 84vw); max-height: 340px; overflow-y: auto;
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 14px; padding: 6px; box-shadow: var(--shadow-md);
}
.topic-menu[hidden] { display: none; }
.tf-opt {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  width: 100%; text-align: left; cursor: pointer;
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft);
  background: transparent; border: 0; border-radius: 9px; padding: 7px 10px;
  transition: background-color 0.14s ease, color 0.14s ease;
}
.tf-opt:hover, .tf-opt:focus { background: var(--accent-soft); color: var(--accent); outline: none; }
.tf-opt.active { background: var(--accent-soft); color: var(--accent); }
.tf-opt-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tf-count { font-size: 0.7rem; color: var(--muted); flex: none; font-variant-numeric: tabular-nums; }
.tf-opt:hover .tf-count, .tf-opt:focus .tf-count, .tf-opt.active .tf-count { color: var(--accent); }
/* zero-count under the current cross-filter — not selectable, dimmed (overrides :hover) */
.tf-opt:disabled { opacity: 0.4; cursor: default; }
.tf-opt:disabled:hover, .tf-opt:disabled:focus { background: transparent; color: var(--ink-soft); }
.tf-opt:disabled .tf-count { color: var(--muted); }

/* ---------- Post list ---------- */
.post-list {
  display: grid; gap: 0; border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden; background: var(--surface);
}
.post-row {
  display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: start;
  padding: 22px clamp(18px, 3vw, 30px); border-top: 1px solid var(--border);
  text-decoration: none; color: inherit; transition: background-color 0.2s ease;
}
.post-row:first-child { border-top: 0; }
.post-row:hover { background: var(--surface-2); }
.post-row .pr-main h4 {
  font-family: var(--font-sans); font-weight: 600; font-size: 1.08rem;
  display: flex; align-items: center; gap: 9px; color: var(--ink);
  transition: color 0.2s ease;
}
.post-row:hover .pr-main h4 { color: var(--accent); }
.post-row .pr-main h4 .ext { opacity: 0; transition: opacity 0.2s ease; color: var(--accent); }
.post-row:hover .pr-main h4 .ext { opacity: 1; }
.post-row .pr-excerpt { color: var(--ink-soft); font-size: 0.95rem; margin-top: 7px; line-height: 1.5; }
.post-row .pr-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 9px; }
.post-row .pr-date {
  font-family: var(--font-mono); font-size: 0.74rem; color: var(--muted);
  white-space: nowrap; align-self: start; padding-top: 3px;
}

/* ---------- Paginator ---------- */
.blog-pager {
  display: flex; flex-wrap: wrap; gap: 7px; align-items: center;
  justify-content: center; margin: 26px 0 4px;
}
.blog-pager:empty { display: none; }
.pg-btn, .pg-num {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 7px 14px; cursor: pointer;
  transition: all 0.18s ease; white-space: nowrap; min-width: 40px; text-align: center;
}
.pg-num { padding: 7px 0; }
.pg-btn:not(.disabled):hover, .pg-num:hover { border-color: var(--accent); color: var(--accent); }
.pg-num.active {
  background: var(--accent); border-color: var(--accent); color: var(--on-accent); cursor: default;
}
.pg-btn.disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.pg-gap {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted);
  padding: 0 4px; user-select: none;
}

/* ---------- Theme chips (in rows / article) ---------- */
.ptheme {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted);
  padding: 3px 9px; border-radius: 999px; background: var(--surface-2);
  border: 1px solid var(--border); white-space: nowrap;
}

/* ---------- Single post article ---------- */
.article-head { margin: 8px 0 26px; }
.article-head h1 {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(2rem, 4.4vw, 3rem); line-height: 1.08; letter-spacing: -0.01em;
  color: var(--ink); margin-bottom: 16px;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
.article-meta .pr-date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); }

.article-body { color: var(--ink-soft); font-size: 1.06rem; line-height: 1.75; }
.article-body > *:first-child { margin-top: 0; }
.article-body h2 {
  font-family: var(--font-display); font-weight: 500; color: var(--ink);
  font-size: 1.7rem; line-height: 1.2; margin: 2em 0 0.6em;
}
.article-body h3 {
  font-family: var(--font-sans); font-weight: 600; color: var(--ink);
  font-size: 1.28rem; margin: 1.6em 0 0.5em;
}
.article-body h4 { font-family: var(--font-sans); font-weight: 600; color: var(--ink); font-size: 1.08rem; margin: 1.4em 0 0.4em; }
.article-body p { margin: 0 0 1.15em; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--accent-strong); }
.article-body ul, .article-body ol { margin: 0 0 1.15em; padding-left: 1.4em; }
.article-body li { margin: 0.35em 0; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body blockquote {
  margin: 1.5em 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--accent);
  color: var(--ink); font-family: var(--font-display); font-style: italic; font-size: 1.12rem;
}
.article-body code {
  font-family: var(--font-mono); font-size: 0.88em;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.12em 0.4em;
}
.article-body pre {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px; overflow-x: auto; margin: 0 0 1.3em;
}
.article-body pre code { background: none; border: 0; padding: 0; font-size: 0.86rem; line-height: 1.6; }
.article-body img { max-width: 100%; height: auto; border-radius: 12px; margin: 0.5em 0; }
.article-body hr { border: 0; border-top: 1px solid var(--border); margin: 2.2em 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 0 0 1.3em; font-size: 0.95rem; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 9px 12px; text-align: left; }
.article-body th { background: var(--surface-2); color: var(--ink); font-family: var(--font-sans); }

/* ---------- Article footer nav + comments ---------- */
.article-foot { margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--border); }

/* share row: share buttons left, "back to blog" anchored right */
.article-foot-row {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px; margin-bottom: 28px;
}
.article-foot-row .btn { margin-left: auto; }

/* share on X / LinkedIn — site palette, accent on hover */
.article-share { display: flex; align-items: center; gap: 10px; }
.article-share .share-label {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin-right: 2px;
}
.share-btn {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  display: inline-grid; place-items: center;
  border: 1px solid var(--border-strong); background: var(--surface-2);
  color: var(--ink-soft);
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.share-btn:hover {
  color: var(--on-accent); background: var(--accent); border-color: var(--accent);
  transform: translateY(-2px);
}
.share-btn svg { width: 17px; height: 17px; fill: currentColor; display: block; }
.comments { margin-top: 40px; }
.comments h3 {
  font-family: var(--font-sans); font-weight: 600; font-size: 1.15rem; color: var(--ink); margin-bottom: 12px;
}
.comments-soon {
  border: 1px dashed var(--border-strong); border-radius: 14px;
  padding: 28px; text-align: center; color: var(--muted);
  font-family: var(--font-mono); font-size: 0.85rem; background: var(--surface);
}

/* ---------- Loading / empty / error states ---------- */
.blog-state {
  padding: 48px 0; text-align: center; color: var(--muted);
  font-family: var(--font-mono); font-size: 0.9rem;
}

/* ---------- Homepage blog preview band ---------- */
.blog-preview-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px;
}
.bp-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 22px; text-decoration: none; color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.bp-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.bp-card h4 { font-family: var(--font-sans); font-weight: 600; font-size: 1.05rem; color: var(--ink); line-height: 1.3; }
.bp-card .bp-excerpt { color: var(--ink-soft); font-size: 0.92rem; line-height: 1.5; flex: 1; }
.bp-card .pr-date { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .blog-preview-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .post-row { grid-template-columns: 1fr; gap: 10px; }
  .post-row .pr-date { order: -1; }
  .blog-sort { margin-left: 0; }
}