/* ==========================================================================
   Phototranslatorai — single post
   Article header, three-column reading layout, share rail, author box,
   feedback widget, related posts and comments.
   ========================================================================== */

/* ------------------------------------------------- Reading progress bar --- */
.read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: var(--grad);
  z-index: 60;
  transition: width .1s linear;
}

/* ------------------------------------------------------ Article header ---- */
.a-head {
  max-width: 820px;
  margin: 0 auto;
  padding: 44px 0 28px;
  text-align: center;
}
.a-title {
  font-size: clamp(2rem, 4.6vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -1.6px;
  margin: 16px 0;
}
.a-head .sub {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 640px;
  margin: 0 auto 24px;
}
.a-head .meta { justify-content: center; }
.a-head .avatar { width: 38px; height: 38px; font-size: .85rem; }

/* ------------------------------------------------------ Reading layout ---- */
.a-layout {
  display: grid;
  grid-template-columns: 60px minmax(0, 720px) 260px;
  gap: 40px;
  justify-content: center;
  align-items: start;
}

/* --------------------------------------------------------- Share rail ----- */
.share {
  position: sticky;
  top: calc(var(--head) + 38px);
  display: grid;
  gap: 10px;
}
.share button,
.share a {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.share button:hover,
.share a:hover { background: var(--grad); color: #fff; border-color: transparent; }
.share svg { width: 18px; height: 18px; }

/* ------------------------------------------------------------- Tags ------- */
.a-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.a-tags a {
  padding: 6px 14px;
  border-radius: 10px;
  background: var(--surface-2);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
}
.a-tags a:hover { background: var(--grad); color: #fff; }

/* -------------------------------------------------------- Author box ------ */
.author {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 30px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.author .avatar { width: 64px; height: 64px; font-size: 1.2rem; }
.author h4 { font-size: 1.05rem; }
.author h4 a { text-decoration: none; }
.author h4 a:hover { color: var(--p1); }
.author p { color: var(--muted); font-size: .93rem; margin-top: 4px; }
.author-link {
  display: inline-block;
  margin-top: 6px;
  font-size: .85rem;
  color: var(--p1);
  font-weight: 600;
}

/* ---------------------------------------------------- Helpful feedback ---- */
.helpful {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
  padding: 18px 22px;
  border: 1px dashed var(--line);
  border-radius: 18px;
  font-weight: 600;
}
.helpful > div { display: flex; gap: 8px; }
.helpful button {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-weight: 600;
}
.helpful button:hover { border-color: var(--p1); }
.helpful .thanks { color: var(--ok); }

/* ------------------------------------------------------- Post navigation -- */
.post-nav { margin-top: 40px; }
.post-nav .nav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.post-nav .nav-previous,
.post-nav .nav-next {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  transition: border-color .2s, transform .2s;
}
.post-nav .nav-next { text-align: right; }
.post-nav .nav-previous:hover,
.post-nav .nav-next:hover { border-color: var(--p1); transform: translateY(-2px); }
.post-nav a { display: block; text-decoration: none; }
.post-nav .nav-dir {
  display: block;
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 4px;
}
.post-nav .nav-title { font-weight: 700; line-height: 1.35; }

/* ------------------------------------------------------- Related posts ---- */
.related { margin-top: 80px; }
.related h2 {
  font-size: 1.8rem;
  letter-spacing: -.8px;
  margin-bottom: 22px;
  text-align: center;
}
.r-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.r-card .thumb { height: 160px; }
.r-card .p-body { padding: 20px; }

/* ------------------------------------------------------------ Comments ---- */
.comments-area {
  max-width: 760px;
  margin: 80px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.comments-title { font-size: 1.5rem; margin-bottom: 24px; }

.comment-list { display: grid; gap: 20px; }
.comment-list .children {
  display: grid;
  gap: 20px;
  margin-top: 20px;
  padding-left: 24px;
  border-left: 2px solid var(--line);
}

.comment-body {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
}
.comment-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: .88rem;
  flex-wrap: wrap;
}
.comment-author { font-weight: 700; display: flex; align-items: center; gap: 10px; }
.comment-author img { border-radius: 50%; }
.comment-metadata { color: var(--muted); }
.comment-metadata a { text-decoration: none; }
.comment-content p + p { margin-top: .8em; }
.comment-content a { color: var(--p1); text-decoration: underline; }
.reply { margin-top: 10px; }
.reply a { font-size: .85rem; font-weight: 700; color: var(--p1); }
.comment-awaiting-moderation { color: var(--warn); font-size: .88rem; }
.bypostauthor > .comment-body { border-color: color-mix(in srgb, var(--p1) 40%, var(--line)); }

.no-comments { color: var(--muted); }

/* Comment form */
.comment-respond { margin-top: 40px; }
.comment-reply-title { font-size: 1.3rem; margin-bottom: 8px; }
.comment-notes { color: var(--muted); font-size: .9rem; margin-bottom: 20px; }
.comment-form { display: grid; gap: 16px; }
.comment-form label {
  display: block;
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
  margin-bottom: 6px;
}
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  transition: border-color .2s, box-shadow .2s;
}
.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--p1);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--p1) 15%, transparent);
}
.comment-form textarea { resize: vertical; min-height: 140px; }
.comment-form-cookies-consent {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
}
.comment-form-cookies-consent label {
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
  font-size: .9rem;
  color: var(--text);
}
.comment-form input[type="checkbox"] { width: auto; accent-color: var(--p1); }
.form-submit { margin: 0; }

.comment-navigation .nav-links { display: flex; gap: 12px; justify-content: space-between; margin-top: 24px; }

/* ---------------------------------------------------------- Responsive ---- */
@media (max-width: 1100px) {
  .a-layout { grid-template-columns: minmax(0, 720px); }

  .a-aside { display: none; }

  /* The share rail becomes a horizontal row under the article. */
  .share {
    position: static;
    grid-auto-flow: column;
    justify-content: start;
    order: 2;
    margin-top: 30px;
  }
}

@media (max-width: 820px) {
  .r-grid { grid-template-columns: 1fr; }
  .post-nav .nav-links { grid-template-columns: 1fr; }
  .post-nav .nav-next { text-align: left; }
}

@media (max-width: 640px) {
  .a-head { padding: 28px 0 20px; }
  .a-title { letter-spacing: -1px; }

  .author { flex-direction: column; text-align: center; }
  .helpful { flex-direction: column; align-items: stretch; text-align: center; }
  .helpful > div { justify-content: center; }

  .comment-list .children { padding-left: 14px; }
  .comments-area { margin-top: 56px; }
}