/* ============================================================
   TyreReviews threaded comment widget
   - Block-level <li>, flex only on the inner row
   - Children sit BELOW the card, indented with a vertical rail
   - Connector tick from rail → card on every nested reply
   - Petrol/teal accent, monospace metadata, quiet archived badge
   - Visual indent caps at depth 6 (DOM still nests; rail just stops)
   ============================================================ */

:root {
  --tr-c-rail:       #d1d8db;
  --tr-c-rail-hover: #0c6975;
  --tr-c-accent:     #0c6975;
  --tr-c-accent-ink: #08525c;
  --tr-c-author:     #1f2933;
  --tr-c-meta:       #6b7884;
  --tr-c-body:       var(--bs-body-color, #2c3441);
  --tr-c-divider:    var(--bs-border-color, #e5e8ec);
  --tr-c-form-bg:    #fbfaf6;
  --tr-c-form-bd:    #ece7d6;
  --tr-c-input-bg:   #ffffff;
  --tr-c-rules-bg:   #f4f1e8;
  --tr-c-mono:       ui-monospace, SFMono-Regular, "JetBrains Mono", "Menlo", "Consolas", monospace;
}

[data-bs-theme="dark"] {
  --tr-c-rail:       #2b333a;
  --tr-c-rail-hover: #4ad0d8;
  --tr-c-accent:     #4ad0d8;
  --tr-c-accent-ink: #6fe0e7;
  --tr-c-author:     #e7eaee;
  --tr-c-meta:       #8a96a3;
  --tr-c-body:       var(--bs-body-color, #d8dde2);
  --tr-c-divider:    #2b333a;
  --tr-c-form-bg:    #161b1f;
  --tr-c-form-bd:    #2b333a;
  --tr-c-input-bg:   #0f1418;
  --tr-c-rules-bg:   #11161a;
}

/* Visually-hidden helper for screen-reader-only labels. */
.tr-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ---------- Section frame ---------- */
.tr-comments {
  margin: 3rem 0 4rem;
  font-size: 0.95rem;
  color: var(--tr-c-body);
  line-height: 1.55;
  box-sizing: border-box;
}
.tr-comments *,
.tr-comments *::before,
.tr-comments *::after { box-sizing: border-box; }

.tr-comments-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--tr-c-divider);
  margin-bottom: 1.4rem;
}
.tr-comments-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tr-c-author);
  margin: 0;
}
.tr-comments-count {
  font-family: var(--tr-c-mono);
  font-size: 0.78rem;
  color: var(--tr-c-meta);
  letter-spacing: 0;
}

/* ---------- Tree ---------- */
.tr-comment-list,
.tr-comment-children {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}
.tr-comments {
  /* Where the horizontal tick of the L meets the avatar (vertical centre). */
  --tr-c-tick-y: 1.55rem;
  /* Visible L: vertical run + curved corner + short horizontal tick. */
  --tr-c-l-w: 0.95rem;
  /* Breathing-room on each side of the L (left = parent col → rail; right = tick → avatar). */
  --tr-c-l-gap: 0.45rem;
  /* Curve radius at the L's bottom-left corner. */
  --tr-c-l-r: 0.55rem;
  /* Rail thickness. */
  --tr-c-l-t: 2px;
}
.tr-comment {
  display: block;
  position: relative;
}

/* Children container: padding holds the per-reply L-connectors. NO border-left
   here — that approach extended past the last reply. Each child draws its own
   L instead, ending precisely at its own avatar tick. */
.tr-comment-children {
  margin-left: 0.95rem !important;
  padding-left: calc(var(--tr-c-l-gap) + var(--tr-c-l-w) + var(--tr-c-l-gap)) !important;
  position: relative;
}

/* Per-reply L-connector: vertical line from the top of this comment down to
   its avatar Y, then a curved corner turning right to the avatar. Drawn with a
   border-left + border-bottom + border-bottom-left-radius. */
.tr-comment-children > .tr-comment::before {
  content: "";
  position: absolute;
  left: calc(-1 * (var(--tr-c-l-w) + var(--tr-c-l-gap)));
  top: 0;
  width: var(--tr-c-l-w);
  height: var(--tr-c-tick-y);
  border-left:   var(--tr-c-l-t) solid var(--tr-c-rail);
  border-bottom: var(--tr-c-l-t) solid var(--tr-c-rail);
  border-bottom-left-radius: var(--tr-c-l-r);
  transition: border-color 0.15s ease;
  pointer-events: none;
}

/* Continuation: only when this comment has siblings AFTER it, extend a vertical
   line from the avatar tick down to the bottom of THIS li (which already
   contains any nested children). The next sibling's L picks up from there. */
.tr-comment-children > .tr-comment:not(:last-child)::after {
  content: "";
  position: absolute;
  left: calc(-1 * (var(--tr-c-l-w) + var(--tr-c-l-gap)));
  top: var(--tr-c-tick-y);
  bottom: 0;
  width: var(--tr-c-l-t);
  background: var(--tr-c-rail);
  transition: background 0.15s ease;
  pointer-events: none;
}

/* Hover the children block → highlight all rails inside it. */
.tr-comment-children:hover > .tr-comment::before { border-color: var(--tr-c-rail-hover); }
.tr-comment-children:hover > .tr-comment::after  { background:   var(--tr-c-rail-hover); }

/* Indent cap: depth 7+ no longer adds rail/padding (still nests in DOM).
   Hide the L-connectors on whatever children render inside a capped parent. */
.tr-comment[data-depth="7"]  > .tr-comment-children,
.tr-comment[data-depth="8"]  > .tr-comment-children,
.tr-comment[data-depth="9"]  > .tr-comment-children,
.tr-comment[data-depth="10"] > .tr-comment-children,
.tr-comment[data-depth="11"] > .tr-comment-children,
.tr-comment[data-depth="12"] > .tr-comment-children {
  margin-left: 0 !important;
  padding-left: 0 !important;
}
.tr-comment[data-depth="7"]  > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="7"]  > .tr-comment-children > .tr-comment::after,
.tr-comment[data-depth="8"]  > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="8"]  > .tr-comment-children > .tr-comment::after,
.tr-comment[data-depth="9"]  > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="9"]  > .tr-comment-children > .tr-comment::after,
.tr-comment[data-depth="10"] > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="10"] > .tr-comment-children > .tr-comment::after,
.tr-comment[data-depth="11"] > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="11"] > .tr-comment-children > .tr-comment::after,
.tr-comment[data-depth="12"] > .tr-comment-children > .tr-comment::before,
.tr-comment[data-depth="12"] > .tr-comment-children > .tr-comment::after {
  display: none;
}

/* ---------- Card ---------- */
.tr-comment-card {
  padding: 0.85rem 0;
  position: relative;
}
.tr-comment-list > .tr-comment + .tr-comment > .tr-comment-card {
  border-top: 1px solid var(--tr-c-divider);
}
.tr-comment-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

/* ---------- Avatar ---------- */
.tr-comment-avatar {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  margin-top: 0.2rem;
}
.tr-comment-avatar img,
.tr-comment-avatar-fallback {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: block;
  object-fit: cover;
}
.tr-comment-avatar-fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #134e57 0%, #0c6975 100%);
  color: #f3fbfb;
  font-weight: 600;
  font-size: 0.78rem;
  font-family: var(--tr-c-mono);
}

/* Slightly smaller avatar on deeper levels. */
.tr-comment[data-depth="3"] .tr-comment-avatar,
.tr-comment[data-depth="3"] .tr-comment-avatar img,
.tr-comment[data-depth="3"] .tr-comment-avatar-fallback,
.tr-comment[data-depth="4"] .tr-comment-avatar,
.tr-comment[data-depth="4"] .tr-comment-avatar img,
.tr-comment[data-depth="4"] .tr-comment-avatar-fallback,
.tr-comment[data-depth="5"] .tr-comment-avatar,
.tr-comment[data-depth="5"] .tr-comment-avatar img,
.tr-comment[data-depth="5"] .tr-comment-avatar-fallback,
.tr-comment[data-depth="6"] .tr-comment-avatar,
.tr-comment[data-depth="6"] .tr-comment-avatar img,
.tr-comment[data-depth="6"] .tr-comment-avatar-fallback {
  width: 26px;
  height: 26px;
  flex-basis: 26px;
  font-size: 0.7rem;
}
/* Smaller avatars at deeper levels → the tick lands a bit higher.
   Override the CSS variable for these depths so the L-connector follows. */
.tr-comment[data-depth="3"],
.tr-comment[data-depth="4"],
.tr-comment[data-depth="5"],
.tr-comment[data-depth="6"] {
  --tr-c-tick-y: 1.35rem;
}

/* ---------- Header (name, parent ref, time, archived) ---------- */
.tr-comment-main { flex: 1 1 auto; min-width: 0; }
.tr-comment-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
}
.tr-comment-author {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--tr-c-author);
}
.tr-comment-replyto {
  font-size: 0.78rem;
  color: var(--tr-c-accent);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
  transition: border-color 0.12s ease;
}
.tr-comment-replyto:hover { border-bottom-color: var(--tr-c-accent); color: var(--tr-c-accent-ink); }
.tr-comment-replyto > span { opacity: 0.55; margin-right: 0.05rem; }

.tr-comment-time {
  font-family: var(--tr-c-mono);
  font-size: 0.75rem;
  color: var(--tr-c-meta);
  letter-spacing: -0.01em;
}

.tr-comment-imported {
  font-family: var(--tr-c-mono);
  font-size: 0.65rem;
  color: var(--tr-c-meta);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.55;
}
.tr-comment-imported::before {
  content: "·";
  margin-right: 0.4rem;
  opacity: 0.7;
}

/* ---------- Body ---------- */
.tr-comment-body {
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.tr-comment-body p { margin: 0 0 0.6rem; }
.tr-comment-body p:last-child { margin-bottom: 0; }
.tr-comment-body a {
  color: var(--tr-c-accent);
  text-decoration: underline;
  text-decoration-color: rgba(12, 105, 117, 0.35);
  text-underline-offset: 2px;
}
.tr-comment-body a:hover { text-decoration-color: var(--tr-c-accent); }

/* ---------- Actions row ---------- */
.tr-comment-actions {
  margin-top: 0.55rem;
  display: flex;
  gap: 1.05rem;
  align-items: center;
  font-size: 0.78rem;
  color: var(--tr-c-meta);
}
.tr-comment-reply-btn,
.tr-comment-report-btn {
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  font: inherit;
  font-weight: 500;
  color: var(--tr-c-meta);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color 0.12s ease;
}
.tr-comment-reply-btn:hover { color: var(--tr-c-accent); }
.tr-comment-report-btn { display: none; }
.tr-comments.is-logged-in .tr-comment-report-btn { display: inline; }
.tr-comment-report-btn:hover { color: #c0392b; }

.tr-comment-permalink {
  margin-left: auto;
  color: var(--tr-c-meta);
  text-decoration: none;
  font-family: var(--tr-c-mono);
  font-size: 0.7rem;
  opacity: 0.55;
  transition: opacity 0.12s ease, color 0.12s ease;
}
.tr-comment-permalink:hover { opacity: 1; color: var(--tr-c-accent); }

/* ---------- Empty state ---------- */
.tr-comments-empty {
  padding: 2.5rem 0;
  color: var(--tr-c-meta);
  text-align: center;
  font-style: italic;
  border-top: 1px dashed var(--tr-c-divider);
  border-bottom: 1px dashed var(--tr-c-divider);
}

/* ============================================================
   Comment form — JS-hydrated (cache-safe). Skeleton shown until
   ?a=comments_form returns the live form with current-session CSRF.
   ============================================================ */
.tr-comment-form-mount {
  margin-bottom: 1.6rem;
}
.tr-comment-form-skeleton {
  background: var(--tr-c-form-bg);
  border: 1px solid var(--tr-c-form-bd);
  border-radius: 4px;
  padding: 1.2rem 1.35rem;
  min-height: 9rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.tr-skeleton-textarea,
.tr-skeleton-button {
  background: linear-gradient(90deg,
    var(--tr-c-form-bd) 0%,
    color-mix(in srgb, var(--tr-c-form-bd) 50%, transparent) 50%,
    var(--tr-c-form-bd) 100%);
  background-size: 200% 100%;
  animation: tr-shimmer 1.4s linear infinite;
  border-radius: 3px;
}
.tr-skeleton-textarea { height: 6rem; }
.tr-skeleton-button   { height: 2.2rem; width: 9rem; }
@keyframes tr-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.tr-comment-form-noscript {
  margin: 0.85rem 0 0;
  padding: 0.75rem 1rem;
  background: rgba(192, 57, 43, 0.08);
  border-left: 2px solid #c0392b;
  color: var(--tr-c-author);
  font-size: 0.85rem;
}
.tr-comment-form-error {
  padding: 1rem;
  background: rgba(192, 57, 43, 0.08);
  border: 1px solid rgba(192, 57, 43, 0.25);
  border-radius: 3px;
  color: #c0392b;
  font-size: 0.85rem;
  margin: 0;
}
.tr-comment-form-error a {
  color: #c0392b;
  text-decoration: underline;
}


.tr-comment-form {
  background: var(--tr-c-form-bg);
  border: 1px solid var(--tr-c-form-bd);
  border-radius: 4px;
  padding: 1.2rem 1.35rem;
  margin-bottom: 1.6rem;
  box-shadow: 0 1px 0 rgba(0,0,0,0.02);
  width: 100%;
}
.tr-comment .tr-comment-form,
.tr-comment-children .tr-comment-form {
  margin: 0.85rem 0 0.65rem;
}
.tr-comment-form-as {
  font-size: 0.82rem;
  color: var(--tr-c-meta);
  margin-bottom: 0.7rem;
}
.tr-comment-form-as strong {
  color: var(--tr-c-author);
  font-weight: 600;
}

/* Field labels are block-level so wrapped inputs go full width. */
.tr-comment-form-field {
  display: block;
  width: 100%;
  margin: 0;
}
.tr-comment-form-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tr-c-meta);
  margin-bottom: 0.3rem;
}
.tr-comment-form-hint {
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  color: var(--tr-c-meta);
  opacity: 0.75;
}

.tr-comment-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

.tr-comment-form input[type="text"],
.tr-comment-form input[type="email"],
.tr-comment-form textarea {
  display: block;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--tr-c-form-bd);
  border-radius: 3px;
  background: var(--tr-c-input-bg);
  font: inherit;
  color: var(--tr-c-body);
  text-transform: none;
  letter-spacing: 0;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.tr-comment-form input:focus,
.tr-comment-form textarea:focus {
  outline: 0;
  border-color: var(--tr-c-accent);
  box-shadow: 0 0 0 3px rgba(12, 105, 117, 0.14);
}

.tr-comment-form-captcha {
  display: flex;
  gap: 0.85rem;
  align-items: flex-end;
  margin-bottom: 0.7rem;
  flex-wrap: wrap;
}
.tr-comment-form-captcha img {
  border: 1px solid var(--tr-c-form-bd);
  background: #fff;
  height: 38px;
}
.tr-comment-form-captcha .tr-comment-form-field { flex: 1 1 13rem; max-width: 18rem; }

.tr-comment-form-signup {
  font-size: 0.82rem;
  color: var(--tr-c-author);
  padding: 0.6rem 0.85rem;
  margin-bottom: 0.95rem;
  background: rgba(12, 105, 117, 0.06);
  border-left: 2px solid var(--tr-c-accent);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.tr-comment-form-signup strong { font-weight: 600; }
.tr-comment-form-signup .tr-btn-link {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--tr-c-accent);
  color: var(--tr-c-accent);
  background: var(--tr-c-input-bg);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: 3px;
  transition: background 0.12s ease, color 0.12s ease;
}
.tr-comment-form-signup .tr-btn-link:hover {
  background: var(--tr-c-accent);
  color: #fff;
}
.tr-comment-form-signup .tr-btn-link--ghost {
  border-color: var(--tr-c-form-bd);
  color: var(--tr-c-meta);
}
.tr-comment-form-signup .tr-btn-link--ghost:hover {
  background: var(--tr-c-meta);
  color: #fff;
  border-color: var(--tr-c-meta);
}

.tr-comment-form-body { margin-bottom: 0.85rem; }
.tr-comment-form-body textarea {
  resize: vertical;
  min-height: 110px;
}

/* Comment guidelines list — quiet, scannable, sits between textarea and Post button. */
.tr-comment-form-rules {
  margin: 0 0 0.95rem;
  padding: 0.7rem 1rem 0.7rem 2rem;
  background: var(--tr-c-rules-bg);
  border: 1px solid var(--tr-c-form-bd);
  border-radius: 3px;
  font-size: 0.78rem;
  color: var(--tr-c-meta);
  line-height: 1.5;
}
.tr-comment-form-rules li { margin: 0.1rem 0; padding: 0; }
.tr-comment-form-rules li::marker { color: var(--tr-c-accent); }

.tr-comment-form-footer {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.tr-comment-submit {
  background: var(--tr-c-accent);
  color: #fff;
  border: 0;
  padding: 0.55rem 1.2rem;
  border-radius: 3px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  transition: background 0.12s ease;
}
.tr-comment-submit:hover { background: var(--tr-c-accent-ink); }
.tr-comment-submit:disabled { opacity: 0.55; cursor: wait; }
.tr-comment-cancel-reply {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--tr-c-meta);
  cursor: pointer;
  text-decoration: underline;
  font-size: 0.82rem;
}
.tr-comment-form-status { font-size: 0.82rem; color: var(--tr-c-meta); }
.tr-comment-form-status.is-error   { color: #c0392b; }
.tr-comment-form-status.is-success { color: #15803d; }
.tr-required { color: #c0392b; font-weight: 700; }

/* ---------- Mobile ---------- */
@media (max-width: 540px) {
  .tr-comments {
    --tr-c-l-w: 0.7rem;
    --tr-c-l-r: 0.45rem;
  }
  .tr-comment-children {
    margin-left: 0.4rem !important;
    padding-left: calc(var(--tr-c-l-w) + 0.35rem) !important;
  }
  .tr-comment-form-row { grid-template-columns: 1fr; }
  .tr-comment-form-captcha { gap: 0.6rem; }
  .tr-comment-permalink { display: none; }
}