/* =========================================================
   WATTPAD-STYLE NOVEL BLOCK DISCUSSION DRAWER (MS-05E5G2)
   ========================================================= */

/* Body scroll lock when discussion drawer is open */
body.has-block-discussion-open {
    overflow: hidden;
}

/* =========================================================
   BACKDROP
   ========================================================= */
.novel-block-discussion-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1058;
    background: rgba(18, 18, 18, 0.45);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.novel-block-discussion-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

/* =========================================================
   DRAWER SHELL
   ========================================================= */
.novel-block-discussion-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1060;
    display: flex;
    flex-direction: column;
    width: min(440px, 92vw);
    height: 100vh;
    height: 100dvh;
    box-sizing: border-box;
    background: var(--reader-surface, #ffffff);
    color: var(--reader-text, #1f2937);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.16);
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.28s ease;
    visibility: hidden;
    font-family: var(--font-ui, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
}

.novel-block-discussion-drawer.is-open {
    transform: translateX(0);
    visibility: visible;
}

/* =========================================================
   DRAWER HEADER
   ========================================================= */
.novel-block-discussion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--reader-border, #e5e7eb);
    background: var(--reader-surface-soft, #f9fafb);
    flex-shrink: 0;
}

.novel-block-discussion-header-title {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.novel-block-discussion-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--reader-text, #111827);
}

.novel-block-discussion-count {
    font-size: 0.8125rem;
    color: var(--reader-text-muted, #6b7280);
    font-weight: 500;
}

.novel-block-discussion-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--reader-text-muted, #6b7280);
    font-size: 1.125rem;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.novel-block-discussion-close:hover {
    background-color: var(--reader-border, #e5e7eb);
    color: var(--reader-text, #111827);
}

.novel-block-discussion-close:focus-visible {
    outline: 2px solid var(--reader-primary, #0284c7);
    outline-offset: 2px;
}

/* =========================================================
   PASSAGE SECTION (FULL WHOLE CANONICAL BLOCK TEXT)
   ========================================================= */
.novel-block-discussion-passage-section {
    padding: 1rem 1.25rem;
    background: var(--reader-surface-soft, #f9fafb);
    border-bottom: 1px solid var(--reader-border, #e5e7eb);
    flex-shrink: 0;
    max-height: 28vh;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.novel-block-discussion-passage-label {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--reader-primary, #0284c7);
    margin-bottom: 0.35rem;
}

.novel-block-discussion-passage {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--reader-text, #374151);
    text-align: justify;
    text-justify: inter-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
    word-break: break-word;
    border-left: 3px solid var(--reader-primary, #0284c7);
    padding-left: 0.65rem;
}

/* =========================================================
   ROOT COMMENT COMPOSER (MS-05E5G3)
   ========================================================= */
.novel-block-discussion-composer-wrapper {
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--reader-border, #e5e7eb);
    background: var(--reader-surface, #ffffff);
    flex-shrink: 0;
}

.novel-block-discussion-composer {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.novel-block-discussion-composer-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--reader-text, #111827);
}

.novel-block-discussion-composer-input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 6px;
    background: var(--reader-surface, #ffffff);
    color: var(--reader-text, #1f2937);
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.5;
    text-align: left;
    resize: vertical;
    min-height: 72px;
    max-height: 180px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.novel-block-discussion-composer-input:focus {
    outline: none;
    border-color: var(--reader-primary, #0284c7);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.novel-block-discussion-composer-input:disabled {
    opacity: 0.6;
    background: var(--reader-surface-soft, #f9fafb);
    cursor: not-allowed;
}

.novel-block-discussion-composer-status {
    font-size: 0.8125rem;
    min-height: 1.2em;
    line-height: 1.3;
}

.novel-block-discussion-composer-status:empty {
    display: none;
}

.novel-block-discussion-composer-status.is-error {
    color: #dc2626;
    font-weight: 500;
}

.novel-block-discussion-composer-status.is-info {
    color: var(--reader-primary, #0284c7);
}

.novel-block-discussion-composer-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.novel-block-discussion-composer-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--reader-primary, #0284c7);
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.novel-block-discussion-composer-submit:hover:not(:disabled) {
    opacity: 0.92;
}

.novel-block-discussion-composer-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Anonymous Participation Prompt */
.novel-block-discussion-anonymous-prompt {
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--reader-border, #e5e7eb);
    background: var(--reader-surface-soft, #f9fafb);
    font-size: 0.8125rem;
    color: var(--reader-text-muted, #6b7280);
    text-align: center;
    flex-shrink: 0;
}

.novel-block-discussion-login-link {
    color: var(--reader-primary, #0284c7);
    font-weight: 600;
    text-decoration: underline;
}

/* =========================================================
   CONTENT / THREADS SECTION
   ========================================================= */
.novel-block-discussion-content {
    flex: 1 1 auto;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 1rem 1.25rem;
    box-sizing: border-box;
}

/* Loading & Statuses */
.novel-block-discussion-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem 1rem;
    text-align: center;
    color: var(--reader-text-muted, #6b7280);
    font-size: 0.875rem;
}

.novel-block-discussion-status-text {
    margin: 0;
    line-height: 1.5;
}

.novel-block-discussion-spinner {
    display: inline-block;
    width: 1.75rem;
    height: 1.75rem;
    border: 2px solid var(--reader-border, #e5e7eb);
    border-top-color: var(--reader-primary, #0284c7);
    border-radius: 50%;
    animation: novel-block-spinner-rotate 0.75s linear infinite;
}

@keyframes novel-block-spinner-rotate {
    to {
        transform: rotate(360deg);
    }
}

.novel-block-discussion-status--error,
.novel-block-discussion-status--unavailable {
    color: #dc2626;
}

.novel-block-discussion-retry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--reader-primary, #0284c7);
    background: transparent;
    border: 1px solid var(--reader-primary, #0284c7);
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.novel-block-discussion-retry-btn:hover {
    background: var(--reader-primary, #0284c7);
    color: #ffffff;
}

.novel-block-discussion-retry-btn:focus-visible {
    outline: 2px solid var(--reader-primary, #0284c7);
    outline-offset: 2px;
}

/* Empty State */
.novel-block-discussion-empty {
    padding: 3rem 1rem;
    text-align: center;
}

.novel-block-discussion-empty-text {
    margin: 0;
    color: var(--reader-text-muted, #6b7280);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Threads Feed */
.novel-block-discussion-threads {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.novel-block-discussion-thread {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--reader-border, #f3f4f6);
}

.novel-block-discussion-thread:last-child {
    border-bottom: none;
}

/* =========================================================
   Base comment card, header, avatar, author, time, edited,
   overflow actions menu, body, and tombstone styles are
   defined in shared /css/shared/comments.css (MS-05E / E8C4-UX2)
   ========================================================= */

/* Mention Presentation (MS-05E5G4A-UX1) */
.novel-comment-reply-mention {
    display: inline;
    font-weight: 600;
    color: var(--reader-primary, #0284c7);
    margin-right: 0.35em;
}

.novel-comment-reply-body-text {
    display: inline;
}

/* Replies (Flat single-level indentation) */
.novel-comment-replies {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-left: 1rem;
    padding-left: 0.75rem;
    border-left: 2px solid var(--reader-border, #e5e7eb);
}

.novel-comment--reply {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

/* =========================================================
   RESPONSIVE / MOBILE
   ========================================================= */
@media (max-width: 640px) {
    .novel-block-discussion-drawer {
        width: 100%;
        max-width: 100%;
    }

    .novel-block-discussion-content {
        padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    }
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
    .novel-block-discussion-backdrop,
    .novel-block-discussion-drawer,
    .novel-block-discussion-spinner {
        transition: none;
        animation: none;
    }
}

/* =========================================================
   RESTORED INTERACTION TARGET HIGHLIGHT (MS-05E5G3A3)
   ========================================================= */
.novel-block-discussion-thread.is-restored-target,
.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;
}

/* =========================================================
   INLINE REPLY COMPOSER FORM (MS-05E5G4A)
   ========================================================= */
.novel-reply-composer {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--reader-card-bg, rgba(0, 0, 0, 0.02));
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 6px;
}

.novel-reply-composer-context {
    font-size: 0.775rem;
    color: var(--reader-text-muted, #6b7280);
    margin-bottom: 0.35rem;
}

.novel-reply-composer-target-name {
    color: var(--reader-text-main, #1f2937);
    font-weight: 600;
}

.novel-reply-composer-input {
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 4px;
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    font-family: inherit;
    color: var(--reader-text-main, #1f2937);
    background: var(--reader-input-bg, #ffffff);
}

.novel-reply-composer-input:focus {
    outline: none;
    border-color: var(--accent, #b45309);
    box-shadow: 0 0 0 2px rgba(180, 83, 9, 0.15);
}

.novel-reply-composer-status {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    min-height: 1rem;
}

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

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

.novel-reply-composer-actions {
    display: flex;
    gap: 0.4rem;
    justify-content: flex-end;
    margin-top: 0.35rem;
}

.novel-reply-composer-submit {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: #ffffff;
    background-color: var(--accent, #b45309);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.novel-reply-composer-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.novel-reply-composer-cancel {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--reader-text-muted, #6b7280);
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: color 0.15s ease;
}

.novel-reply-composer-cancel:hover {
    color: var(--reader-text-main, #1f2937);
}

/* Guest Reply Auth Modal */
.novel-comment-auth-modal {
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.novel-comment-auth-modal[hidden] {
    display: none !important;
}

.novel-comment-auth-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
}

.novel-comment-auth-modal-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 380px;
    background: var(--reader-card-bg, #ffffff);
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 1.25rem;
    border: 1px solid var(--reader-border, #e5e7eb);
}

.novel-comment-auth-modal-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: var(--reader-text-main, #1f2937);
}

.novel-comment-auth-modal-message {
    font-size: 0.85rem;
    color: var(--reader-text-muted, #4b5563);
    margin: 0 0 1rem 0;
    line-height: 1.4;
}

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

.novel-comment-auth-modal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    padding: 0.35rem 0.75rem;
    font-size: 0.825rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.novel-comment-auth-modal-btn--primary {
    background-color: var(--accent, #b45309);
    color: #ffffff;
    border-color: var(--accent, #b45309);
}

.novel-comment-auth-modal-btn--primary:hover {
    opacity: 0.9;
    color: #ffffff;
}

.novel-comment-auth-modal-btn--secondary {
    background-color: transparent;
    color: var(--reader-text-main, #374151);
    border-color: var(--reader-border, #d1d5db);
}

.novel-comment-auth-modal-btn--secondary:hover {
    background-color: var(--reader-hover-bg, rgba(0, 0, 0, 0.04));
}

.novel-comment-auth-modal-btn--cancel {
    background-color: transparent;
    color: var(--reader-text-muted, #6b7280);
    border-color: transparent;
}

.novel-comment-auth-modal-btn--cancel:hover {
    color: var(--reader-text-main, #1f2937);
}

/* =========================================================
   EDIT COMPOSER (MS-05E5G4B)
   ========================================================= */
.novel-edit-composer {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--reader-card-bg, rgba(0, 0, 0, 0.02));
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 6px;
}

.novel-edit-composer-input {
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    border: 1px solid var(--reader-border, #d1d5db);
    border-radius: 4px;
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    font-family: inherit;
    color: var(--reader-text-main, #1f2937);
    background: var(--reader-input-bg, #ffffff);
}

.novel-edit-composer-input:focus {
    outline: none;
    border-color: var(--accent, #b45309);
    box-shadow: 0 0 0 2px rgba(180, 83, 9, 0.15);
}

.novel-edit-composer-status {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    min-height: 1rem;
}

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

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

.novel-edit-composer-actions {
    display: flex;
    gap: 0.4rem;
    justify-content: flex-end;
    margin-top: 0.35rem;
}

.novel-edit-composer-submit {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: #ffffff;
    background-color: var(--accent, #b45309);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.novel-edit-composer-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.novel-edit-composer-cancel {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--reader-text-muted, #6b7280);
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: color 0.15s ease;
}

.novel-edit-composer-cancel:hover {
    color: var(--reader-text-main, #1f2937);
}

/* =========================================================
   DELETE CONFIRMATION (MS-05E5G4C2)
   ========================================================= */
.novel-delete-confirmation {
    margin-top: 0.5rem;
    padding: 0.6rem 0.75rem;
    background: var(--reader-card-bg, rgba(0, 0, 0, 0.02));
    border: 1px solid var(--reader-border, #e5e7eb);
    border-radius: 6px;
}

.novel-delete-confirmation-message {
    font-size: 0.8rem;
    color: var(--reader-text-main, #1f2937);
    line-height: 1.4;
    margin-bottom: 0.4rem;
}

.novel-delete-confirmation-status {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    min-height: 1rem;
}

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

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

.novel-delete-confirmation-actions {
    display: flex;
    gap: 0.4rem;
    justify-content: flex-end;
    margin-top: 0.35rem;
}

.novel-delete-confirmation-confirm {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: #ffffff;
    background-color: var(--color-danger, #dc2626);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.novel-delete-confirmation-confirm:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.novel-delete-confirmation-cancel {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--reader-text-muted, #6b7280);
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: color 0.15s ease;
}

.novel-delete-confirmation-cancel:hover {
    color: var(--reader-text-main, #1f2937);
}