#comment-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#comment-form input,
#comment-form textarea {
  padding: 12px 14px;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  outline: none;
  font-family: inherit;
  font-size: inherit;
  transition: border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

#comment-form input:focus,
#comment-form textarea:focus {
  border-color: var(--muted);
  box-shadow: 0 0 0 2px var(--white-006);
}

#comment-form textarea {
  resize: vertical;
  min-height: 80px;
}

#comment-form button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.comment-status {
  font-size: 13px;
  margin-top: 6px;
}

.comment-status-success {
  color: var(--success);
}

.comment-status-error {
  color: var(--error);
}

#comment-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 6px;
}

.comment-item {
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--white-002);
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.comment-header strong {
  font-size: 14px;
}

.comment-date {
  font-size: 11.5px;
  color: var(--muted);
}

.comment-message {
  margin: 0;
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.6;
}

.comment-divider {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

.comment-notice {
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  margin: 6px 0 0;
  padding: 8px 12px;
  border-left: 3px solid var(--accent);
  background: var(--white-003);
}

/* ----- Admin Reply ----- */

.btn-small {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-cancel {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
}

.comment-admin-bar {
  margin: 12px 0;
}

.comment-admin-btn {
  font-size: 12px;
  padding: 4px 12px;
}

.comment-reply {
  margin-left: 24px;
  border-left: 2px solid var(--accent);
  padding-left: 12px;
  margin-top: 8px;
}

.comment-reply-toggle {
  margin-top: 8px;
}

.comment-reply-form {
  margin-top: 10px;
  padding: 10px;
  background: var(--white-003);
  border: 1px solid var(--line);
}

.comment-reply-textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  outline: none;
  font-family: inherit;
  font-size: 13px;
  resize: vertical;
  min-height: 60px;
  box-sizing: border-box;
}

.comment-reply-textarea:focus {
  border-color: var(--muted);
  box-shadow: 0 0 0 2px var(--white-006);
}

.comment-reply-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.comment-admin-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  color: var(--admin);
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  padding: 2px 7px;
  margin-left: 4px;
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: normal;
}

/* ----- Admin Login Modal ----- */

.comment-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.comment-modal {
  background: var(--bg1);
  border: 1px solid var(--line);
  padding: 24px;
  min-width: 280px;
  max-width: 360px;
}

.comment-modal h4 {
  margin: 0 0 14px;
  font-size: 15px;
}

.comment-pass-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  outline: none;
  font-family: inherit;
  font-size: 14px;
  box-sizing: border-box;
}

.comment-pass-input:focus {
  border-color: var(--muted);
}

.comment-modal-error {
  color: var(--error);
  font-size: 13px;
  margin: 8px 0 0;
}

.comment-modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

/* ---- E-book Series Section ---- */
.ebook-series-section {
  margin-top: 8px;
}

.ebook-series-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.ebook-series-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ebook-series-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg0);
  transition: border-color 0.2s;
}

.ebook-series-item:hover {
  border-color: var(--accent);
}

.ebook-series-item-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.ebook-series-item.available {
  flex-direction: column;
  padding: 0;
  background: var(--bg1);
  overflow: hidden;
}

.ebook-series-item.available:hover {
  border-color: var(--line);
}

.ebook-series-item.available.expanded {
  border-color: var(--accent);
}

.ebook-series-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 14px 18px;
  user-select: none;
}

.ebook-series-item-header:hover {
  background: rgba(128,128,128,0.03);
}

.ebook-series-toggle {
  font-size: 20px;
  font-weight: 700;
  color: var(--muted);
  transition: transform 0.25s ease;
  line-height: 1;
}

.ebook-series-item.available.expanded .ebook-series-toggle {
  transform: rotate(135deg);
}

.ebook-series-item-body {
  display: flex;
  flex-direction: row;
  gap: 20px;
  padding: 0 18px;
  border-top: none;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  cursor: default;
  transition: max-height 0.4s ease, opacity 0.35s ease, padding 0.3s ease, border 0.2s ease;
}

.ebook-series-item.available.expanded .ebook-series-item-body {
  max-height: 2000px;
  opacity: 1;
  padding: 16px 18px 18px;
  border-top: 1px solid var(--line);
}

.ebook-series-cover {
  flex-shrink: 0;
  width: 90px;
  height: 120px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), rgba(128,128,128,0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}

.ebook-series-cover-icon {
  font-size: 34px;
  opacity: 0.9;
}

.ebook-series-cover.has-cover {
  background: none;
  box-shadow: none;
  padding: 0;
}

.ebook-series-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}

.ebook-series-info {
  flex: 1;
  min-width: 0;
}

.ebook-series-author {
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 8px;
}

.ebook-series-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.85;
  margin-bottom: 10px;
}

.ebook-series-item-body .toolRow {
  margin-top: 0;
}

.ebook-series-status {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.ebook-series-status.coming-soon {
  background: rgba(255, 165, 0, 0.15);
  color: #ff9800;
  border: 1px solid rgba(255, 165, 0, 0.3);
}

@media (max-width: 600px) {
  .ebook-series-item-body {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .ebook-series-item-body .toolRow {
    justify-content: flex-start;
  }
}

/* ---- E-book Vertical List ---- */
.ebook-series-list-vertical {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
}

.ebook-series-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--bg0);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}

.ebook-series-row:hover {
  border-color: var(--accent);
  background: var(--bg1);
}

.ebook-series-row.coming-soon {
  opacity: 0.55;
  cursor: default;
  pointer-events: none;
}

.ebook-series-row-icon {
  font-size: 24px;
  flex-shrink: 0;
  width: 40px;
  text-align: center;
}

.ebook-series-row-name {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.ebook-series-row-status {
  font-size: 11px;
  font-weight: 600;
  color: #ff9800;
  padding: 2px 10px;
  border-radius: 20px;
  background: rgba(255, 165, 0, 0.12);
  border: 1px solid rgba(255, 165, 0, 0.25);
  white-space: nowrap;
}

/* ---- E-book Detail Panel ---- */
.ebook-detail-panel {
  display: flex;
  gap: 30px;
  padding: 24px;
  background: var(--bg1);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.ebook-detail-cover-wrapper {
  flex-shrink: 0;
}

.ebook-detail-cover {
  width: 200px;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.ebook-detail-cover-placeholder {
  font-size: 48px;
}

.ebook-detail-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

.ebook-detail-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin: 0;
}

.ebook-detail-author {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.ebook-detail-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.85;
  margin: 8px 0;
}

.ebook-detail-actions {
  margin-top: 12px;
}

@media (max-width: 600px) {
  .ebook-detail-panel {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .ebook-detail-cover {
    width: 160px;
    height: 224px;
  }

  .ebook-detail-actions {
    justify-content: center;
  }

  .ebook-series-row {
    padding: 12px 14px;
  }
}