/* ── Forum Detail Page ───────────────────────────── */

.fd-page {
  padding-top: 172px;
  padding-bottom: 120px;
  min-height: 100vh;
  background: #fff;
}

.fd-wrap {
  display: grid;
  gap: 18px;
  padding: 26px 0 44px;
}

.breadcrumb-truncate {
  max-width: 320px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  display: inline-block;
  vertical-align: middle;
}

/* ── Hero ──────────────────────────────────────────── */

.fd-hero {
  padding: 30px 34px 0;
  border-radius: var(--radius-xl);
  background: rgba(255, 253, 249, .92);
  border: 1px solid rgba(255, 255, 255, .78);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.fd-hero-main {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding-bottom: 28px;
}

.fd-hero-book {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
}

.fd-book-cover {
  width: 88px;
  aspect-ratio: 261 / 319;
  border-radius: 7px;
  background-size: cover;
  background-position: center;
  background-color: #ede8db;
  box-shadow: 0 8px 24px rgba(31, 26, 22, .18);
  flex-shrink: 0;
}

.fd-book-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 800;
  color: var(--millie-deep);
  background: var(--millie-soft);
  padding: 4px 8px;
  border-radius: 999px;
  white-space: nowrap;
  transition: background .2s;
}

.fd-book-link:hover {
  background: var(--millie);
}

.fd-hero-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fd-hero-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.fd-dept {
  font-size: 12px;
  font-weight: 700;
  color: var(--sub);
}

.fd-title {
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.04em;
  color: var(--text);
  word-break: keep-all;
}

.fd-author-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.fd-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--millie);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  color: #403006;
  overflow: hidden;
}

.fd-avatar-me {
  background: var(--violet-soft);
  color: var(--violet);
  font-size: 11px;
}

.fd-author-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.fd-author-info strong {
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
}

.fd-author-info span {
  font-size: 11px;
  color: var(--muted);
}

.fd-meta-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.fd-dot {
  color: var(--line);
}

/* stat row */
.fd-stat-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  margin: 0 -34px;
  padding-left: 34px;
  padding-right: 34px;
}

.fd-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--muted);
}

.fd-stat strong {
  font-weight: 800;
  color: var(--sub);
}

.fd-spacer {
  flex: 1;
}

.fd-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--sub);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: all .2s;
}

.fd-action-btn:hover {
  border-color: var(--text);
  color: var(--text);
}

.fd-action-btn.liked {
  background: #fff0f3;
  border-color: #f5a0b0;
  color: #c73c5e;
}

.fd-action-btn.liked svg {
  fill: #c73c5e;
  stroke: #c73c5e;
}

/* ── Body Grid ─────────────────────────────────────── */

.fd-body-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 18px;
  align-items: start;
}

/* ── Content ───────────────────────────────────────── */

.fd-content {
  border-radius: var(--radius-xl);
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
}

.fd-content-inner {
  padding: 36px 40px 28px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  word-break: keep-all;
}

.fd-content-inner p {
  margin-bottom: 20px;
  max-width: 68ch;
}

.fd-content-inner p:last-child {
  margin-bottom: 0;
}

.fd-content-inner h2 {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.03em;
  margin: 32px 0 12px;
  color: var(--text);
}

.fd-content-inner blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--millie);
  background: var(--millie-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
  color: var(--sub);
  font-style: italic;
}

.fd-tags {
  padding: 0 40px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fd-tag {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  font-size: 12px;
  font-weight: 700;
  color: var(--sub);
}

.fd-content-footer {
  padding: 20px 40px 28px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: center;
}

.fd-like-big {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  color: var(--sub);
  background: #fff;
  cursor: pointer;
  transition: all .25s;
}

.fd-like-big:hover {
  border-color: #f5a0b0;
  color: #c73c5e;
  background: #fff0f3;
}

.fd-like-big.liked {
  border-color: #f5a0b0;
  background: #fff0f3;
  color: #c73c5e;
}

.fd-like-big.liked svg {
  fill: #c73c5e;
  stroke: #c73c5e;
}

/* ── Sidebar ───────────────────────────────────────── */

.fd-sidebar {
  position: sticky;
  top: 180px;
}

.fd-sidebar-card {
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 249, .92);
  border: 1px solid var(--line);
  padding: 20px;
  display: grid;
  gap: 12px;
}

.fd-sidebar-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

.fd-related-list {
  display: grid;
  gap: 12px;
}

.fd-related-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: opacity .2s;
}

.fd-related-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.fd-related-item:hover {
  opacity: .7;
}

.fd-related-cover {
  width: 44px;
  aspect-ratio: 261 / 319;
  border-radius: 5px;
  background-size: cover;
  background-position: center;
  background-color: #ede8db;
}

.fd-related-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fd-related-title {
  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.fd-related-meta {
  font-size: 11px;
  color: var(--muted);
}

/* ── Comments ──────────────────────────────────────── */

.fd-comments {
  border-radius: var(--radius-xl);
  background: #fff;
  border: 1px solid var(--line);
  padding: 32px 40px;
  display: grid;
  gap: 24px;
}

.fd-section-title {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.03em;
}

.fd-section-title span {
  color: var(--millie-deep);
}

.fd-comment-input-area {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.fd-comment-box {
  display: grid;
  gap: 8px;
}

.fd-textarea {
  width: 100%;
  resize: none;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text);
  background: var(--paper-2);
  transition: border-color .2s;
  line-height: 1.6;
}

.fd-textarea:focus {
  outline: none;
  border-color: var(--millie-deep);
  background: #fff;
}

.fd-comment-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.fd-char-count {
  font-size: 11px;
  color: var(--muted);
}

.fd-submit-btn {
  padding: 8px 20px;
  font-size: 13px;
}

.fd-comment-list {
  display: grid;
  gap: 0;
}

.fd-comment {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.fd-comment:first-child {
  border-top: none;
  padding-top: 0;
}

.fd-comment-body {
  display: grid;
  gap: 6px;
}

.fd-comment-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fd-comment-author {
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
}

.fd-comment-role {
  font-size: 11px;
  color: var(--muted);
}

.fd-comment-date {
  margin-left: auto;
  font-size: 11px;
  color: var(--muted);
}

.fd-comment-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--sub);
  word-break: keep-all;
}

.fd-comment-footer {
  display: flex;
  align-items: center;
  gap: 12px;
}

.fd-comment-like {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: color .2s;
}

.fd-comment-like:hover {
  color: #c73c5e;
}

.fd-comment-like.liked {
  color: #c73c5e;
}

/* ── Back row ──────────────────────────────────────── */

.fd-back-row {
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.fd-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  font-size: 13px;
  font-weight: 700;
  color: var(--sub);
  background: #fff;
  transition: all .2s;
}

.fd-back-btn:hover {
  border-color: var(--text);
  color: var(--text);
}

/* ── Responsive ────────────────────────────────────── */

@media (max-width: 900px) {
  .fd-body-grid {
    grid-template-columns: 1fr;
  }

  .fd-sidebar {
    position: static;
    order: -1;
  }

  .fd-related-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .fd-related-item {
    padding-bottom: 0;
    border-bottom: none;
  }
}

@media (max-width: 640px) {
  .fd-hero {
    padding: 20px 20px 0;
  }

  .fd-stat-row {
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .fd-content-inner {
    padding: 24px 20px 20px;
  }

  .fd-tags {
    padding: 0 20px 20px;
  }

  .fd-content-footer {
    padding: 16px 20px 20px;
  }

  .fd-comments {
    padding: 24px 20px;
  }

  .fd-meta-right {
    display: none;
  }

  .fd-related-list {
    grid-template-columns: 1fr;
  }
}