/* =========================================================
   BOTTOM-OF-CHAPTER COMMENT SECTION READ UI (MS-05E5H2C)
   ========================================================= */

/* Main Container: Sits directly in the reader flow below chapter navigation */
.novel-chapter-comments {
    max-width: var(--reader-max-width, 820px);
    margin: 3.5rem auto 2.5rem auto;
    padding: 2.25rem 0 3rem;
    border-top: 1px solid var(--reader-border, #e5e7eb);
    font-family: var(--font-ui, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
    color: var(--reader-text, #1f2937);
    box-sizing: border-box;
}

/* Header: Title and Count */
.novel-chapter-comments-header {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.novel-chapter-comments-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--reader-text, #111827);
}

.novel-chapter-comments-count {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--reader-text-muted, #6b7280);
}

/* Status announcements: loading, errors */
.novel-chapter-comments-status {
    margin-bottom: 1rem;
}

/* Loading State */
.novel-chapter-comments-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2.5rem 1rem;
    color: var(--reader-text-muted, #6b7280);
    font-size: 0.95rem;
}

.novel-chapter-comments-spinner {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--reader-border, #e5e7eb);
    border-top-color: var(--color-primary, #2563eb);
    border-radius: 50%;
    animation: novelCommentsSpin 0.8s linear infinite;
}

@keyframes novelCommentsSpin {
    to {
        transform: rotate(360deg);
    }
}

.novel-chapter-comments-loading-text {
    font-weight: 500;
}

/* Empty State */
.novel-chapter-comments-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px dashed var(--reader-border, #e5e7eb);
    border-radius: 8px;
    margin: 1rem 0;
}

.novel-chapter-comments-empty-text {
    margin: 0;
    font-size: 0.95rem;
    color: var(--reader-text-muted, #6b7280);
}

/* Error State */
.novel-chapter-comments-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    padding: 2rem 1.25rem;
    background: var(--color-danger-surface, #fef2f2);
    border: 1px solid var(--color-danger-border, #fecaca);
    border-radius: 8px;
    text-align: center;
    margin: 1rem 0;
}

.novel-chapter-comments-error-text {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-danger, #dc2626);
    font-weight: 500;
}

.novel-chapter-comments-retry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--color-danger, #dc2626);
    border-radius: 6px;
    background: transparent;
    color: var(--color-danger, #dc2626);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.novel-chapter-comments-retry-btn:hover {
    background: var(--color-danger, #dc2626);
    color: #ffffff;
}

.novel-chapter-comments-retry-btn:focus-visible {
    outline: 2px solid var(--color-danger, #dc2626);
    outline-offset: 2px;
}

/* List of comment threads - Single Shared Frame */
.novel-chapter-comments-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--reader-surface, #ffffff);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.novel-chapter-comments-list:empty {
    display: none;
}

.novel-chapter-comments-list:has(.novel-chapter-comments-empty) {
    background: transparent;
    border: none;
    box-shadow: none;
}

/* Root Thread Presentation inside Shared Frame */
.novel-chapter-comments .novel-block-discussion-thread {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 1.25rem;
    box-shadow: none;
    transition: background-color 0.15s ease;
}

/* Subtle Divider Between Consecutive Root Threads */
.novel-chapter-comments .novel-block-discussion-thread + .novel-block-discussion-thread {
    border-top: 1px solid var(--reader-border, #e5e7eb);
}

.novel-chapter-comments .novel-comment-replies {
    margin-top: 0.85rem;
    margin-left: 0;
    padding-left: 1rem;
    border-left: 2px solid var(--reader-border, #e5e7eb);
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

@media (max-width: 640px) {
    .novel-chapter-comments {
        margin-top: 2.5rem;
        padding: 1.5rem 0 2.5rem;
    }

    .novel-chapter-comments .novel-block-discussion-thread {
        padding: 1rem;
    }

    .novel-chapter-comments .novel-comment-replies {
        margin-left: 0;
        padding-left: 0.75rem;
    }
}

/* =========================================================
   ACTIONS OVERFLOW MENU (MS-05E / E8C4-UX1)
   Base card, header, avatar, edited badge, and overflow menu
   are defined in shared /css/shared/comments.css
   ========================================================= */

/* =========================================================
   ROOT COMMENT PAGINATION (MS-05E5H2E)
   ========================================================= */

.novel-chapter-comments-more {
    margin-top: 1.75rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.novel-chapter-comments-more[hidden] {
    display: none !important;
}

.novel-chapter-comments-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.75rem;
    font-size: 0.925rem;
    font-weight: 600;
    font-family: inherit;
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    background: var(--reader-surface, #ffffff);
    color: var(--reader-text, #1f2937);
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.novel-chapter-comments-more-btn:hover:not(:disabled) {
    background: var(--reader-surface-soft, #f9fafb);
    border-color: var(--color-primary, #2563eb);
    color: var(--color-primary, #2563eb);
}

.novel-chapter-comments-more-btn:focus-visible {
    outline: 2px solid var(--color-primary, #2563eb);
    outline-offset: 2px;
}

.novel-chapter-comments-more-btn:disabled,
.novel-chapter-comments-more-btn.is-loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.novel-chapter-comments-more-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--reader-border, #e5e7eb);
    border-top-color: var(--color-primary, #2563eb);
    border-radius: 50%;
    animation: novelCommentsSpin 0.8s linear infinite;
}

.novel-chapter-comments-more-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    text-align: center;
}

.novel-chapter-comments-more-error-text {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-danger, #dc2626);
    font-weight: 500;
}

.novel-chapter-comments-more-retry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 1rem;
    font-size: 0.825rem;
    font-weight: 600;
    font-family: inherit;
    border: 1px solid var(--color-danger, #dc2626);
    border-radius: 6px;
    background: transparent;
    color: var(--color-danger, #dc2626);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.novel-chapter-comments-more-retry-btn:hover {
    background: var(--color-danger, #dc2626);
    color: #ffffff;
}

.novel-chapter-comments-more-retry-btn:focus-visible {
    outline: 2px solid var(--color-danger, #dc2626);
    outline-offset: 2px;
}

/* =========================================================
   PER-THREAD REPLY PROGRESSIVE REVEAL (MS-05E5H2E)
   ========================================================= */

.novel-comment-replies-more {
    margin-top: 0.35rem;
    display: flex;
    align-items: center;
}

.novel-comment-replies-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.65rem;
    margin-left: -0.65rem;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--color-primary, #2563eb);
    font-size: 0.825rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.novel-comment-replies-more-btn:hover {
    background: var(--reader-surface-soft, rgba(0, 0, 0, 0.04));
    text-decoration: underline;
}

.novel-comment-replies-more-btn:focus-visible {
    outline: 2px solid var(--color-primary, #2563eb);
    outline-offset: 1px;
}

/* =========================================================
   BOTTOM CHAPTER ROOT COMMENT COMPOSER (MS-05E5H2F1)
   ========================================================= */

.novel-chapter-comment-composer-wrapper {
    margin-bottom: 2rem;
}

.novel-chapter-comment-composer {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    padding: 1.25rem;
    box-sizing: border-box;
}

.novel-chapter-comment-composer-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--reader-text, #111827);
    margin: 0;
}

.novel-chapter-comment-composer-input {
    width: 100%;
    min-height: 5rem;
    max-height: 15rem;
    resize: vertical;
    padding: 0.75rem 0.875rem;
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--reader-text, #111827);
    background: var(--reader-surface, #ffffff);
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.novel-chapter-comment-composer-input:focus {
    outline: none;
    border-color: var(--color-primary, #2563eb);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.novel-chapter-comment-composer-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--reader-surface-disabled, #f3f4f6);
}

.novel-chapter-comment-composer-status {
    font-size: 0.875rem;
    line-height: 1.4;
    min-height: 0;
}

.novel-chapter-comment-composer-status:empty {
    display: none;
}

.novel-chapter-comment-composer-status.is-error {
    color: var(--color-danger, #dc2626);
}

.novel-chapter-comment-composer-status.is-info {
    color: var(--reader-text-muted, #6b7280);
}

.novel-chapter-comment-composer-actions {
    display: flex;
    justify-content: flex-end;
}

.novel-chapter-comment-composer-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0.45rem 1.15rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--color-primary, #2563eb);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.novel-chapter-comment-composer-submit:hover:not(:disabled) {
    background: var(--color-primary-hover, #1d4ed8);
}

.novel-chapter-comment-composer-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.novel-chapter-comment-anonymous-prompt {
    margin-bottom: 2rem;
    padding: 1.25rem 1.5rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    font-size: 0.9375rem;
    color: var(--reader-text-muted, #4b5563);
    text-align: center;
}

.novel-chapter-comment-login-link {
    color: var(--color-primary, #2563eb);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.novel-chapter-comment-login-link:hover {
    color: var(--color-primary-hover, #1d4ed8);
}

/* =========================================================
   BOTTOM CHAPTER COMMENT REPLY UI (MS-05E5H2F2B)
   Base actions row, reply button, and report button styling
   are defined in shared /css/shared/comments.css
   ========================================================= */

.novel-chapter-comment-reply-composer {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.novel-chapter-comment-reply-composer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--reader-text-muted, #6b7280);
}

.novel-chapter-comment-reply-target-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.novel-chapter-comment-reply-close-btn {
    background: none;
    border: none;
    font-size: 0.875rem;
    line-height: 1;
    color: var(--reader-text-muted, #9ca3af);
    cursor: pointer;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    transition: color 0.15s ease;
}

.novel-chapter-comment-reply-close-btn:hover {
    color: var(--reader-text, #111827);
}

.novel-chapter-comment-reply-composer-input {
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    min-height: 2.75rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.4;
    background: var(--reader-surface, #ffffff);
    color: var(--reader-text, #1f2937);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.novel-chapter-comment-reply-composer-input:focus {
    outline: none;
    border-color: var(--color-primary, #2563eb);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.novel-chapter-comment-reply-composer-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--reader-surface-disabled, #f3f4f6);
}

.novel-chapter-comment-reply-composer-status {
    font-size: 0.8125rem;
    line-height: 1.3;
    min-height: 0;
}

.novel-chapter-comment-reply-composer-status:empty {
    display: none;
}

.novel-chapter-comment-reply-composer-status.is-error {
    color: var(--color-danger, #dc2626);
}

.novel-chapter-comment-reply-composer-status.is-info {
    color: var(--reader-text-muted, #6b7280);
}

.novel-chapter-comment-reply-composer-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}

.novel-chapter-comment-reply-cancel-btn {
    background: transparent;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    padding: 0.375rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--reader-text, #374151);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.novel-chapter-comment-reply-cancel-btn:hover:not(:disabled) {
    background: var(--reader-surface-hover, #e5e7eb);
}

.novel-chapter-comment-reply-cancel-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.novel-chapter-comment-reply-submit-btn {
    background: var(--color-primary, #2563eb);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 0.375rem 1rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.novel-chapter-comment-reply-submit-btn:hover:not(:disabled) {
    background: var(--color-primary-hover, #1d4ed8);
}

.novel-chapter-comment-reply-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.novel-chapter-comment-reply-guest-prompt {
    margin-top: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 6px;
    font-size: 0.8125rem;
    color: var(--reader-text-muted, #4b5563);
}

/* =========================================================
   BOTTOM CHAPTER COMMENT EDIT COMPOSER (MS-05E5H2F3B)
   ========================================================= */

.novel-chapter-comment-edit-composer {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.novel-chapter-comment-edit-input {
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    min-height: 2.75rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.4;
    background: var(--reader-surface, #ffffff);
    color: var(--reader-text, #1f2937);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.novel-chapter-comment-edit-input:focus {
    outline: none;
    border-color: var(--color-primary, #2563eb);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.novel-chapter-comment-edit-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--reader-surface-disabled, #f3f4f6);
}

.novel-chapter-comment-edit-status {
    font-size: 0.8125rem;
    line-height: 1.3;
    min-height: 0;
}

.novel-chapter-comment-edit-status:empty {
    display: none;
}

.novel-chapter-comment-edit-status.is-error {
    color: var(--color-danger, #dc2626);
}

.novel-chapter-comment-edit-status.is-info {
    color: var(--reader-text-muted, #6b7280);
}

.novel-chapter-comment-edit-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}

.novel-chapter-comment-edit-cancel {
    background: transparent;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    padding: 0.375rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--reader-text, #374151);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.novel-chapter-comment-edit-cancel:hover:not(:disabled) {
    background: var(--reader-surface-hover, #e5e7eb);
}

.novel-chapter-comment-edit-cancel:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.novel-chapter-comment-edit-submit {
    background: var(--color-primary, #2563eb);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 0.375rem 1rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.novel-chapter-comment-edit-submit:hover:not(:disabled) {
    background: var(--color-primary-hover, #1d4ed8);
}

.novel-chapter-comment-edit-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* =========================================================
   BOTTOM CHAPTER COMMENT DELETE CONFIRMATION (MS-05E5H2F3B)
   ========================================================= */

.novel-chapter-comment-delete-confirmation {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--reader-surface-soft, #f9fafb);
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.novel-chapter-comment-delete-message {
    font-size: 0.875rem;
    line-height: 1.4;
    color: var(--reader-text, #1f2937);
    font-weight: 500;
}

.novel-chapter-comment-delete-status {
    font-size: 0.8125rem;
    line-height: 1.3;
    min-height: 0;
}

.novel-chapter-comment-delete-status:empty {
    display: none;
}

.novel-chapter-comment-delete-status.is-error {
    color: var(--color-danger, #dc2626);
}

.novel-chapter-comment-delete-status.is-info {
    color: var(--reader-text-muted, #6b7280);
}

.novel-chapter-comment-delete-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}

.novel-chapter-comment-delete-cancel {
    background: transparent;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    padding: 0.375rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--reader-text, #374151);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.novel-chapter-comment-delete-cancel:hover:not(:disabled) {
    background: var(--reader-surface-hover, #e5e7eb);
}

.novel-chapter-comment-delete-cancel:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.novel-chapter-comment-delete-confirm {
    background: var(--color-danger, #dc2626);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 0.375rem 1rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.novel-chapter-comment-delete-confirm:hover:not(:disabled) {
    background: #b91c1c;
}

.novel-chapter-comment-delete-confirm:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* =========================================================
   RESTORED INTERACTION TARGET HIGHLIGHT (MS-05E5C2A)
   ========================================================= */
.novel-chapter-comments .novel-block-discussion-thread.is-restored-target,
.novel-chapter-comments .novel-comment.is-restored-target {
    border-radius: 6px;
    outline: 2px solid var(--accent, #b45309);
    outline-offset: 2px;
    background-color: var(--reader-target-bg, rgba(180, 83, 9, 0.08));
    transition: outline-color 0.4s ease, background-color 0.4s ease;
}

@media (prefers-reduced-motion: reduce) {
    .novel-chapter-comments .novel-block-discussion-thread.is-restored-target,
    .novel-chapter-comments .novel-comment.is-restored-target {
        transition: none;
    }
}