.main-doc-wrapper {
    padding: 15px 0 60px 0;
}

.doc-detail-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0, 122, 94, 0.05);
}

.doc-type-badge {
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    color: #fff;
    background: var(--aof-primary);
    padding: 6px 14px;
    border-radius: 6px;
    display: inline-block;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.doc-title-heading {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--aof-primary-dark);
    line-height: 1.45;
    margin-bottom: 25px;
    letter-spacing: -0.3px;
}

/* BẢNG THUỘC TÍNH METADATA */
.meta-table-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    padding: 20px 25px;
    margin-bottom: 35px;
}

.meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 40px;
}

.meta-item {
    display: flex;
    font-size: 0.92rem;
    line-height: 1.5;
}

.meta-label {
    width: 150px;
    font-weight: 600;
    color: var(--text-muted);
    flex-shrink: 0;
}

.meta-value {
    color: var(--text-main);
    font-weight: 700;
}

/* KHỐI PREVIEW FILE TRỰC TUYẾN */
.doc-preview-zone {
    margin-top: 35px;
}

.preview-header-bar {
    background: #334155;
    color: #fff;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-title {
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.preview-frame-holder {
    width: 100%;
    height: 650px;
    background: #e2e8f0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    overflow: hidden;
    border: 1px solid #334155;
    display: flex;
    justify-content: center;
    align-items: center;
}

.preview-placeholder-text {
    color: var(--text-muted);
    font-weight: 600;
    text-align: center;
    font-size: 0.95rem;
}

/* SIDEBAR VĂN BẢN LIÊN QUAN */
.sidebar-sticky-box {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0, 122, 94, 0.05);
    position: sticky;
    top: 100px;
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--aof-primary-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--aof-gold);
    letter-spacing: 0.5px;
}

.related-doc-link {
    padding: 14px 0;
    border-bottom: 1px solid #edf2f0;
    display: block;
    text-decoration: none;
}

    .related-doc-link:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    .related-doc-link:first-child {
        padding-top: 0;
    }

.related-doc-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.45;
    display: block;
    transition: var(--transition);
}

.related-doc-link:hover .related-doc-title {
    color: var(--aof-primary);
}

.related-doc-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    gap: 15px;
    margin-top: 6px;
    font-weight: 500;
}