/* ==========================================================================
   KIEM LAI WIKI — ARTICLE DISCUSSION / COMMENTS STYLES
   MS-05E6C — Article-level discussion styling for public Wiki article detail
   ========================================================================== */

.wiki-discussion-section {
    margin-top: 32px;
    padding: 28px 32px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--surface-bg);
    box-shadow: 0 1px 3px var(--shadow-color, rgba(0, 0, 0, 0.03));
}

/* =========================================================
   HEADER & TITLE
   ========================================================= */

.wiki-discussion-header {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.wiki-discussion-heading-row {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 0.75rem;
}

.wiki-discussion-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary, #111827);
}

.wiki-discussion-count-badge,
.wiki-discussion-count {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary, #6b7280);
    background: none;
    border: none;
    border-radius: 0;
    padding: 0;
}

/* =========================================================
   ROOT COMPOSER
   ========================================================= */

.wiki-comment-composer {
    margin-bottom: 2rem;
}

.wiki-comment-composer--root {
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-secondary, #f9fafb);
}

.wiki-comment-composer-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.wiki-comment-textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem 0.875rem;
    border: 1px solid var(--border-color, #d1d5db);
    border-radius: 8px;
    background: var(--input-bg, #ffffff);
    color: var(--input-text, inherit);
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.5;
    resize: vertical;
    box-sizing: border-box;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.wiki-comment-textarea:focus {
    outline: none;
    border-color: var(--bs-primary, #0d6efd);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.2);
}

.wiki-comment-textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.wiki-comment-composer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.wiki-comment-composer-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.wiki-comment-composer-error {
    font-size: 0.85rem;
    color: #dc3545;
    font-weight: 500;
}

/* =========================================================
   BUTTONS
   ========================================================= */

.wiki-comment-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 7px 18px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}

.wiki-comment-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.wiki-comment-btn--primary {
    border: 1px solid transparent;
    background-color: var(--bs-primary, #0d6efd);
    color: #ffffff;
}

.wiki-comment-btn--primary:hover:not(:disabled),
.wiki-comment-btn--primary:focus-visible:not(:disabled) {
    filter: brightness(0.92);
}

.wiki-comment-btn--secondary {
    border: 1px solid var(--border-color);
    background-color: var(--surface-bg);
    color: var(--text-primary);
}

.wiki-comment-btn--secondary:hover:not(:disabled),
.wiki-comment-btn--secondary:focus-visible:not(:disabled) {
    background-color: var(--surface-secondary);
}

/* =========================================================
   STATUS / EMPTY / LOADING
   ========================================================= */

.wiki-discussion-status {
    padding: 16px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.wiki-discussion-status:empty {
    display: none;
}

.wiki-discussion-status--empty {
    padding: 32px 16px;
    font-style: italic;
}

.wiki-discussion-status--error {
    padding: 16px 20px;
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 10px;
    background: rgba(220, 53, 69, 0.08);
    color: #dc3545;
    font-weight: 500;
}

.wiki-discussion-status--success {
    padding: 16px 20px;
    border: 1px solid rgba(25, 135, 84, 0.3);
    border-radius: 10px;
    background: rgba(25, 135, 84, 0.08);
    color: #198754;
    font-weight: 500;
}

/* =========================================================
   THREAD LIST & THREADS (Single Shared Frame)
   ========================================================= */

.wiki-discussion-thread-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.wiki-discussion-thread-list:empty {
    display: none;
}

.wiki-thread {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 1.25rem;
    box-shadow: none;
    transition: background-color 0.15s ease;
}

.wiki-thread + .wiki-thread {
    border-top: 1px solid var(--border-color);
}

/* =========================================================
   FLAT REPLIES CONTAINER (LEVEL 1 ONLY)
   ========================================================= */

.wiki-thread-replies {
    margin-top: 0.85rem;
    margin-left: 0;
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.wiki-comment--reply {
    padding-top: 4px;
}

.wiki-comment-reply-mention {
    display: inline;
    font-weight: 600;
    color: var(--bs-primary, #0d6efd);
    margin-right: 6px;
    user-select: text;
}

.wiki-comment-reply-text {
    display: inline;
}

/* =========================================================
   INLINE COMPOSERS (REPLY & EDIT)
   ========================================================= */

.wiki-inline-composer {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-secondary, #f9fafb);
}

.wiki-inline-edit-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 6px;
}

/* =========================================================
   FOOTER / LOAD MORE
   ========================================================= */

.wiki-discussion-footer {
    margin-top: 24px;
    text-align: center;
}

.wiki-discussion-footer[hidden] {
    display: none !important;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 768px) {
    .wiki-discussion-section {
        padding: 20px 16px;
        margin-top: 24px;
        border-radius: 10px;
    }

    .wiki-thread {
        padding: 1rem;
    }

    .wiki-thread-replies {
        margin-left: 0;
        padding-left: 0.75rem;
    }
}

/* =========================================================
   REVISION HISTORY MODAL (MS-05E6D)
   ========================================================= */

.wiki-comment-history-modal {
    position: fixed;
    inset: 0;
    z-index: 1060;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.wiki-comment-history-modal[hidden] {
    display: none !important;
}

.wiki-comment-history-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 1061;
}

.wiki-comment-history-card {
    position: relative;
    z-index: 1062;
    background: var(--surface-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: 0 20px 40px var(--shadow-color, rgba(0, 0, 0, 0.2));
    width: 100%;
    max-width: 520px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: wikiCommentHistoryFadeIn 0.15s ease-out;
}

@keyframes wikiCommentHistoryFadeIn {
    from {
        opacity: 0;
        transform: scale(0.98);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.wiki-comment-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.wiki-comment-history-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.wiki-comment-history-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.wiki-comment-history-close-btn:hover {
    color: var(--text-primary);
    background-color: var(--surface-secondary);
}

.wiki-comment-history-close-btn:focus-visible {
    outline: 2px solid var(--bs-primary, #0d6efd);
    outline-offset: 2px;
}

.wiki-comment-history-body {
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
}

.wiki-comment-history-status {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 16px;
}

.wiki-comment-history-status--error {
    color: #dc3545;
    background-color: rgba(220, 53, 69, 0.08);
    border: 1px solid rgba(220, 53, 69, 0.2);
    border-radius: 8px;
}

.wiki-comment-history-status--empty,
.wiki-comment-history-status--unavailable {
    color: var(--text-secondary);
    font-style: italic;
}

.wiki-comment-history-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.wiki-comment-history-entry {
    background-color: var(--surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wiki-comment-history-entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.wiki-comment-history-badge {
    font-size: 0.78rem;
    font-weight: 700;
    background-color: var(--surface-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: 6px;
}

.wiki-comment-history-time {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.wiki-comment-history-entry-body {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.wiki-comment-history-more {
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wiki-comment-history-more-btn {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    background-color: var(--surface-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.wiki-comment-history-more-btn:hover:not(:disabled) {
    background-color: var(--border-color);
}

.wiki-comment-history-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.wiki-comment-history-more-btn:focus-visible {
    outline: 2px solid var(--bs-primary, #0d6efd);
    outline-offset: 2px;
}

/* =========================================================
   RESTORED INTERACTION TARGET HIGHLIGHT (MS-05E5C2B)
   ========================================================= */
.wiki-discussion-section .wiki-thread.is-restored-target,
.wiki-discussion-section .wiki-comment.is-restored-target,
#wikiDiscussion .wiki-thread.is-restored-target,
#wikiDiscussion .wiki-comment.is-restored-target {
    border-radius: 6px;
    outline: 2px solid var(--accent, #b45309);
    outline-offset: 2px;
    background-color: var(--wiki-target-bg, rgba(180, 83, 9, 0.08));
    transition: outline-color 0.4s ease, background-color 0.4s ease;
}

@media (prefers-reduced-motion: reduce) {
    .wiki-discussion-section .wiki-thread.is-restored-target,
    .wiki-discussion-section .wiki-comment.is-restored-target,
    #wikiDiscussion .wiki-thread.is-restored-target,
    #wikiDiscussion .wiki-comment.is-restored-target {
        transition: none;
    }
}