/**
 * QQ-QLVB Single View CSS
 * Trang chi tiết văn bản: header, tab nav, tab panels, PDF embed, download list
 */

/* =========================================================
   SINGLE PAGE WRAPPER
   ========================================================= */
.qlvb-single-page {
    padding: 24px 0 40px;
}
.qlvb-single-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================================
   BREADCRUMB
   ========================================================= */
.qlvb-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--qlvb-text-muted, #6c757d);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.qlvb-breadcrumb a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--qlvb-primary, #004780);
    text-decoration: none;
    font-weight: 500;
}
.qlvb-breadcrumb a:hover { text-decoration: underline; }
.qlvb-breadcrumb .dashicons { font-size: 15px; width:15px; height:15px; }
.qlvb-breadcrumb-sep { color: #ced4da; }
.qlvb-breadcrumb-current {
    color: var(--qlvb-text, #1a1a2e);
    font-weight: 500;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* =========================================================
   ARTICLE / SINGLE WRAPPER
   ========================================================= */
.qlvb-single {
    --qlvb-primary:       #004780;
    --qlvb-primary-dark:  #003360;
    --qlvb-primary-light: #e8f0f8;
    --qlvb-text:          #1a1a2e;
    --qlvb-text-muted:    #6c757d;
    --qlvb-border:        #dee2e6;
    --qlvb-bg:            #f8f9fa;
    --qlvb-white:         #ffffff;
    --qlvb-radius:        8px;
    --qlvb-shadow:        0 2px 12px rgba(0,71,128,0.10);
    --qlvb-transition:    all 0.2s ease;
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}
.qlvb-single * { box-sizing: border-box; }

/* =========================================================
   SINGLE HEADER
   ========================================================= */
.qlvb-single-header {
    background: var(--qlvb-primary);   /* Dùng màu chủ đề từ Settings, không gradient cứng */
    color: white;
    padding: 28px 32px;
    border-radius: var(--qlvb-radius) var(--qlvb-radius) 0 0;
    margin-bottom: 0;
}
.qlvb-single-meta-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.qlvb-single-code {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255,255,255,0.3);
    font-family: monospace;
}
.qlvb-single-title {
    color: white !important;
    font-size: 22px !important;
    font-weight: 700 !important;
    line-height: 1.4 !important;
    margin: 0 0 14px !important;
    padding: 0 !important;
    border: none !important;
}
.qlvb-single-dates {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: rgba(255,255,255,0.85);
}
.qlvb-single-dates span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.qlvb-single-dates .dashicons { font-size: 15px; width:15px; height:15px; }
.qlvb-single-dates strong { color: white; }

/* =========================================================
   TABS NAVIGATION
   ========================================================= */
.qlvb-tabs {
    display: flex;
    background: var(--qlvb-white);
    border-left: 1px solid var(--qlvb-border);
    border-right: 1px solid var(--qlvb-border);
    overflow-x: auto;
    scrollbar-width: none;
}
.qlvb-tabs::-webkit-scrollbar { display: none; }
.qlvb-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 14px 22px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 14px;
    font-weight: 600;
    color: var(--qlvb-text-muted);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--qlvb-transition);
    position: relative;
}
.qlvb-tab-btn:hover { color: var(--qlvb-primary); background: var(--qlvb-primary-light); }
.qlvb-tab-btn.is-active {
    color: var(--qlvb-primary);
    border-bottom-color: var(--qlvb-primary);
    background: var(--qlvb-primary-light);
}
.qlvb-tab-btn .dashicons { font-size: 17px; width:17px; height:17px; }
.qlvb-tab-count {
    background: var(--qlvb-primary);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* =========================================================
   TAB PANELS
   ========================================================= */
.qlvb-tab-panels {
    background: var(--qlvb-white);
    border: 1px solid var(--qlvb-border);
    border-top: none;
    border-radius: 0 0 var(--qlvb-radius) var(--qlvb-radius);
    box-shadow: var(--qlvb-shadow);
}
.qlvb-tab-panel {
    padding: 28px 32px;
    animation: qlvbFadeIn 0.2s ease;
}
.qlvb-tab-panel[hidden] { display: none; }
@keyframes qlvbFadeIn { from { opacity:0; } to { opacity:1; } }

/* =========================================================
   TAB 1: INFO TABLE
   ========================================================= */
.qlvb-info-table { width: 100%; border-collapse: collapse; }
.qlvb-info-table th,
.qlvb-info-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--qlvb-border);
    font-size: 14px;
    text-align: left;
    vertical-align: middle;
}
.qlvb-info-table tr:last-child th,
.qlvb-info-table tr:last-child td { border-bottom: none; }
.qlvb-info-table th {
    width: 200px;
    background: var(--qlvb-bg);
    font-weight: 700;
    color: var(--qlvb-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.qlvb-info-table tr { display: flex; }
.qlvb-info-table th .dashicons { font-size: 16px; width:16px; height:16px; color: var(--qlvb-primary); flex-shrink: 0; }
.qlvb-info-table td { flex: 1; color: var(--qlvb-text); }
.qlvb-info-table tbody tr:hover td { background: var(--qlvb-primary-light); }
.qlvb-info-table code {
    background: var(--qlvb-bg);
    border: 1px solid var(--qlvb-border);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--qlvb-primary);
    font-weight: 700;
}

/* =========================================================
   TAB 2: CONTENT
   ========================================================= */
.qlvb-content-body {
    line-height: 1.8;
    font-size: 15px;
    color: var(--qlvb-text);
}
.qlvb-content-body p { margin-bottom: 14px; }
.qlvb-content-body ul, .qlvb-content-body ol { margin: 10px 0 14px 24px; }
.qlvb-content-body h2, .qlvb-content-body h3 { color: var(--qlvb-primary); margin-top: 24px; }
.qlvb-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 14px;
    color: var(--qlvb-text-muted);
    text-align: center;
}
.qlvb-empty-state .dashicons { font-size: 52px; width:52px; height:52px; color: #ced4da; }
.qlvb-empty-state p { font-size: 15px; margin: 0; }

/* =========================================================
   TAB 3: PDF VIEWER
   ========================================================= */
.qlvb-pdf-selector { margin-bottom: 14px; }
.qlvb-pdf-selector-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--qlvb-primary);
    margin-bottom: 8px;
}
.qlvb-pdf-file-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.qlvb-pdf-file-tab {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border: 1px solid var(--qlvb-border);
    border-radius: 6px;
    background: var(--qlvb-bg);
    color: var(--qlvb-text);
    font-size: 13px;
    cursor: pointer;
    transition: var(--qlvb-transition);
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.qlvb-pdf-file-tab:hover { border-color: var(--qlvb-primary); color: var(--qlvb-primary); }
.qlvb-pdf-file-tab.is-active {
    background: var(--qlvb-primary);
    border-color: var(--qlvb-primary);
    color: white;
}
.qlvb-pdf-file-tab .dashicons { font-size: 16px; width:16px; height:16px; flex-shrink: 0; }
.qlvb-pdf-show-all {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px dashed var(--qlvb-primary);
    border-radius: 6px;
    background: none;
    color: var(--qlvb-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--qlvb-transition);
}
.qlvb-pdf-show-all:hover { background: var(--qlvb-primary-light); }

.qlvb-pdf-viewer-wrap { margin-bottom: 20px; }
.qlvb-pdf-viewer-wrap[hidden] { display: none; }
.qlvb-pdf-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--qlvb-bg);
    border: 1px solid var(--qlvb-border);
    border-bottom: none;
    border-radius: var(--qlvb-radius) var(--qlvb-radius) 0 0;
    flex-wrap: wrap;
}
.qlvb-pdf-toolbar .dashicons { color: var(--qlvb-primary); }
.qlvb-pdf-filename {
    flex: 1;
    font-size: 13px;
    font-weight: 600;
    color: var(--qlvb-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.qlvb-pdf-frame {
    width: 100%;
    height: 680px;
    border: 1px solid var(--qlvb-border);
    border-radius: 0 0 var(--qlvb-radius) var(--qlvb-radius);
    display: block;
    background: #525659;
}

/* =========================================================
   TAB 4: DOWNLOAD LIST
   ========================================================= */
.qlvb-download-list { display: flex; flex-direction: column; gap: 10px; }
.qlvb-download-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--qlvb-bg);
    border: 1px solid var(--qlvb-border);
    border-radius: var(--qlvb-radius);
    transition: var(--qlvb-transition);
}
.qlvb-download-item:hover {
    background: var(--qlvb-primary-light);
    border-color: var(--qlvb-primary);
    box-shadow: var(--qlvb-shadow);
}
.qlvb-download-icon { flex-shrink: 0; }
.qlvb-ext-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    background: var(--qlvb-primary);
    color: white;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.5px;
}
.qlvb-download-info { flex: 1; min-width: 0; }
.qlvb-download-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--qlvb-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.qlvb-download-size {
    font-size: 12px;
    color: var(--qlvb-text-muted);
    margin-top: 2px;
}
.qlvb-download-actions { display: flex; gap: 6px; flex-shrink: 0; }
.qlvb-btn-download-main {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--qlvb-primary);
    color: white !important;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: var(--qlvb-transition);
}
.qlvb-btn-download-main:hover { background: var(--qlvb-primary-dark); transform: translateY(-1px); }
.qlvb-download-note {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    padding: 10px 14px;
    background: var(--qlvb-primary-light);
    border-radius: 6px;
    font-size: 13px;
    color: var(--qlvb-primary);
}

/* =========================================================
   BACK BUTTON
   ========================================================= */
.qlvb-back-btn-wrap {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--qlvb-border);
}

/* =========================================================
   RESPONSIVE SINGLE
   ========================================================= */
@media (max-width: 768px) {
    .qlvb-single-header { padding: 20px; }
    .qlvb-single-title { font-size: 18px !important; }
    .qlvb-tab-panel { padding: 18px 16px; }
    .qlvb-info-table tr { flex-direction: column; }
    .qlvb-info-table th { width: 100%; border-bottom: none; border-radius: 4px 4px 0 0; }
    .qlvb-info-table td { border-radius: 0 0 4px 4px; }
    .qlvb-pdf-frame { height: 400px; }
    .qlvb-download-item { flex-wrap: wrap; }
    .qlvb-download-actions { width: 100%; }
    .qlvb-btn-download-main { flex: 1; justify-content: center; }
}

/* =========================================================
   TAG ROWS — icon(màu chủ đề) + "Label: value" đồng nhất
   ========================================================= */
.qlvc-tags { display: flex !important; flex-direction: column !important; gap: 3px !important; }
.qlvc-tag-row {
    display: flex !important; align-items: baseline !important; gap: 6px !important;
    font-size: 12px !important; line-height: 1.6 !important;
}
.qlvc-tag-row .dashicons {
    font-size: 13px !important; width: 13px !important; height: 13px !important;
    color: var(--qlvb-primary, #004780) !important;
    flex-shrink: 0 !important; margin-right: 0 !important; margin-top: 2px !important;
}
.qlvc-tag-label {
    font-size: 12px !important; font-weight: 700 !important;
    color: #6c757d !important; white-space: nowrap !important; flex-shrink: 0 !important;
}
.qlvc-tag-val {
    font-size: 12px !important; font-weight: 400 !important; color: #1a1a2e !important;
}

/* =========================================================
   NO PREVIEW (file không embed được)
   ========================================================= */
.qlvb-no-preview {
    display: flex !important; flex-direction: column !important;
    align-items: center !important; justify-content: center !important;
    padding: 48px 24px !important; gap: 14px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border: 1px dashed var(--qlvb-border, #dee2e6) !important;
    border-radius: var(--qlvb-radius, 8px) !important;
    text-align: center !important;
    min-height: 200px !important;
}
.qlvb-no-preview-msg {
    font-size: 14px !important; color: var(--qlvb-text-muted, #6c757d) !important; margin: 0 !important;
}
.qlvb-image-viewer {
    padding: 12px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border-radius: var(--qlvb-radius, 8px) !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
}

/* =========================================================
   TAB 3 — Khu vực xem trực tiếp & File đính kèm khác
   ========================================================= */

/* Section header chung */
.qlvb-section-header {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 10px 14px !important;
    background: var(--qlvb-primary-light, rgba(0,71,128,0.07)) !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-radius: 6px !important;
    margin-bottom: 14px !important;
    font-size: 13px !important;
    font-weight: 700 !important;
    color: var(--qlvb-primary, #004780) !important;
}
.qlvb-section-header .dashicons {
    font-size: 17px !important; width: 17px !important; height: 17px !important;
    color: inherit !important;
}
.qlvb-section-count {
    margin-left: auto !important;
    background: var(--qlvb-primary, #004780) !important;
    color: #fff !important;
    font-size: 11px !important;
    font-weight: 700 !important;
    padding: 1px 7px !important;
    border-radius: 10px !important;
}

/* Khu vực xem trực tiếp */
.qlvb-view-section {
    margin-bottom: 24px !important;
}

/* Khu vực file khác (có đường phân cách nếu có viewable ở trên) */
.qlvb-other-section { }
.qlvb-other-section.has-separator {
    border-top: 2px dashed var(--qlvb-border, #dee2e6) !important;
    padding-top: 20px !important;
    margin-top: 4px !important;
}
.qlvb-other-hint {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    font-size: 12px !important;
    color: var(--qlvb-text-muted, #6c757d) !important;
    font-style: italic !important;
    margin: 0 0 12px !important;
    padding: 8px 12px !important;
    background: #fffbf0 !important;
    border: 1px solid #f0d070 !important;
    border-radius: 5px !important;
}
.qlvb-other-hint .dashicons {
    font-size: 15px !important; width: 15px !important; height: 15px !important;
    color: #c89000 !important; flex-shrink: 0 !important;
}

/* Danh sách file đính kèm khác */
.qlvb-other-file-list {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
}
.qlvb-other-file-item {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 10px 14px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-radius: 6px !important;
    transition: background 0.15s !important;
}
.qlvb-other-file-item:hover {
    background: #f0f4f8 !important;
    border-color: var(--qlvb-primary, #004780) !important;
}
.qlvb-other-file-icon .dashicons {
    font-size: 26px !important; width: 26px !important; height: 26px !important;
}
.qlvb-other-file-info {
    flex: 1 !important; min-width: 0 !important;
    display: flex !important; flex-direction: column !important; gap: 3px !important;
}
.qlvb-other-file-name {
    font-size: 13px !important; font-weight: 600 !important;
    color: var(--qlvb-text, #1a1a2e) !important;
    overflow: hidden !important; text-overflow: ellipsis !important; white-space: nowrap !important;
}
.qlvb-other-file-meta {
    display: flex !important; align-items: center !important; gap: 6px !important;
}
.qlvb-other-ext-badge {
    display: inline-flex !important;
    align-items: center !important;
    padding: 1px 6px !important;
    background: #e9ecef !important;
    color: #495057 !important;
    font-size: 10px !important;
    font-weight: 700 !important;
    border-radius: 3px !important;
    font-family: monospace !important;
    letter-spacing: 0.3px !important;
    text-transform: uppercase !important;
}
.qlvb-other-size {
    font-size: 11px !important;
    color: var(--qlvb-text-muted, #6c757d) !important;
}
.qlvb-other-download-hint {
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    color: var(--qlvb-primary, #004780) !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    padding: 5px 10px !important;
    border: 1px solid var(--qlvb-primary, #004780) !important;
    border-radius: 5px !important;
    transition: all 0.15s !important;
}
.qlvb-other-download-hint:hover {
    background: var(--qlvb-primary, #004780) !important;
    color: #fff !important;
}
.qlvb-other-download-hint .dashicons {
    font-size: 14px !important; width: 14px !important; height: 14px !important; color: inherit !important;
}

/* Filesize trong toolbar PDF */
.qlvb-pdf-size {
    font-size: 11px !important;
    color: rgba(255,255,255,0.7) !important;
    background: rgba(0,0,0,0.15) !important;
    padding: 2px 6px !important;
    border-radius: 4px !important;
    margin-left: 2px !important;
}

/* =========================================================
   TAB 4 — Tải về theo nhóm loại
   ========================================================= */

.qlvb-download-summary {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    font-size: 13px !important;
    color: var(--qlvb-text-muted, #6c757d) !important;
    margin: 0 0 16px !important;
    padding: 10px 14px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border-radius: 6px !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
}
.qlvb-download-summary .dashicons {
    color: var(--qlvb-primary, #004780) !important;
    font-size: 16px !important; width: 16px !important; height: 16px !important;
}

/* Nhóm file theo loại */
.qlvb-dl-group {
    margin-bottom: 20px !important;
}
.qlvb-dl-group:last-child { margin-bottom: 0 !important; }

.qlvb-dl-group-header {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 8px 12px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-bottom: none !important;
    border-radius: 6px 6px 0 0 !important;
    font-size: 13px !important;
    font-weight: 700 !important;
    color: var(--qlvb-text, #1a1a2e) !important;
}
.qlvb-dl-group-header .dashicons {
    font-size: 17px !important; width: 17px !important; height: 17px !important;
}
.qlvb-dl-group-count {
    margin-left: auto !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    color: var(--qlvb-text-muted, #6c757d) !important;
}
.qlvb-dl-group .qlvb-download-list {
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-radius: 0 0 6px 6px !important;
    overflow: hidden !important;
}
.qlvb-dl-group .qlvb-download-item {
    border-radius: 0 !important;
    border-bottom: 1px solid var(--qlvb-border, #dee2e6) !important;
}
.qlvb-dl-group .qlvb-download-item:last-child {
    border-bottom: none !important;
}

/* Responsive Tab 3 & 4 */
@media (max-width: 600px) {
    .qlvb-other-file-item { flex-wrap: wrap !important; }
    .qlvb-other-download-hint { width: 100% !important; justify-content: center !important; }
    .qlvb-download-item { flex-wrap: wrap !important; }
    .qlvb-download-actions { width: 100% !important; }
    .qlvb-btn-download-main { flex: 1 !important; justify-content: center !important; }

    /* ── Responsive Tabs Navigation (Lưới 2x2) ── */
    .qlvb-tabs {
        flex-wrap: wrap !important;
        border-bottom: 1px solid var(--qlvb-border, #dee2e6) !important;
    }
    .qlvb-tab-btn {
        flex: 1 1 50% !important;
        justify-content: center !important;
        padding: 12px 8px !important;
        font-size: 13px !important;
        border-bottom: 2px solid transparent !important;
        border-right: 1px solid var(--qlvb-border, #dee2e6) !important;
        border-radius: 0 !important;
    }
    /* Xóa viền bên phải của các cột chẵn để tránh viền kép */
    .qlvb-tab-btn:nth-child(2n) {
        border-right: none !important;
    }
    /* Thêm viền dưới phân cách cho dòng thứ 1 */
    .qlvb-tab-btn:nth-child(1),
    .qlvb-tab-btn:nth-child(2) {
        border-bottom: 1px solid var(--qlvb-border, #dee2e6) !important;
    }
    .qlvb-tab-btn.is-active {
        border-bottom: 2px solid var(--qlvb-primary, #004780) !important;
        background: var(--qlvb-primary-light, #e8f0f8) !important;
        color: var(--qlvb-primary, #004780) !important;
    }
}

/* =========================================================
   TAB VĂN BẢN GỐC — File đính kèm + Xem trực tiếp
   ========================================================= */

/* ── Section header chung ── */
.qlvb-vs-header {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 14px 20px !important;
    background: var(--qlvb-bg, #f8f9fa) !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-radius: 8px 8px 0 0 !important;
    margin-bottom: 0 !important;
}
.qlvb-vs-icon {
    width: 38px !important; height: 38px !important;
    border-radius: 8px !important;
    display: flex !important; align-items: center !important; justify-content: center !important;
    flex-shrink: 0 !important;
}
.qlvb-vs-icon--attach {
    background: rgba(240,165,0,0.12) !important;
    color: #b07800 !important;
}
.qlvb-vs-icon--attach .dashicons { color: #b07800 !important; font-size: 20px !important; width:20px !important; height:20px !important; }
.qlvb-vs-icon--view {
    background: var(--qlvb-primary-light, rgba(0,71,128,0.08)) !important;
    color: var(--qlvb-primary, #004780) !important;
}
.qlvb-vs-icon--view .dashicons { color: var(--qlvb-primary, #004780) !important; font-size: 20px !important; width:20px !important; height:20px !important; }
.qlvb-vs-title-wrap { flex: 1 !important; min-width: 0 !important; }
.qlvb-vs-title {
    display: block !important; font-size: 14px !important; font-weight: 700 !important;
    color: var(--qlvb-text, #1a1a2e) !important; line-height: 1.3 !important;
}
.qlvb-vs-subtitle {
    display: block !important; font-size: 12px !important; color: var(--qlvb-text-muted, #6c757d) !important;
    margin-top: 2px !important;
}
.qlvb-vs-count {
    display: inline-flex !important; align-items: center !important; justify-content: center !important;
    min-width: 28px !important; height: 28px !important;
    background: var(--qlvb-primary, #004780) !important;
    color: #fff !important; border-radius: 14px !important;
    font-size: 12px !important; font-weight: 700 !important;
    padding: 0 8px !important; flex-shrink: 0 !important;
}
.qlvb-attach-section .qlvb-vs-count { background: #b07800 !important; }

/* ── Khoảng cách giữa 2 khối ── */
.qlvb-view-section.has-top-gap { margin-top: 20px !important; }

/* =========================================================
   KHỐI 1: FILE ĐÍNH KÈM
   ========================================================= */
.qlvb-attach-list {
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-top: none !important;
    border-radius: 0 0 8px 8px !important;
    overflow: hidden !important;
}
.qlvb-attach-item {
    display: flex !important;
    align-items: center !important;
    gap: 14px !important;
    padding: 12px 18px !important;
    background: #fff !important;
    border-bottom: 1px solid var(--qlvb-border, #dee2e6) !important;
    transition: background 0.15s !important;
}
.qlvb-attach-item:last-child { border-bottom: none !important; }
.qlvb-attach-item:hover { background: #fafbff !important; }

.qlvb-attach-icon-wrap { flex-shrink: 0 !important; }
.qlvb-attach-ext-badge {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 42px !important; height: 42px !important;
    background: var(--ext-color, #50575e) !important;
    color: #fff !important;
    border-radius: 8px !important;
    font-size: 11px !important; font-weight: 800 !important;
    letter-spacing: 0.5px !important;
    padding: 0 4px !important;
}

.qlvb-attach-body {
    flex: 1 !important; min-width: 0 !important;
    display: flex !important; flex-direction: column !important; gap: 3px !important;
}
.qlvb-attach-name {
    font-size: 13px !important; font-weight: 600 !important;
    color: var(--qlvb-text, #1a1a2e) !important;
    overflow: hidden !important; text-overflow: ellipsis !important; white-space: nowrap !important;
    display: block !important;
}
.qlvb-attach-size {
    font-size: 11px !important; color: var(--qlvb-text-muted, #6c757d) !important;
}

.qlvb-attach-action {
    display: flex !important; align-items: center !important; gap: 8px !important; flex-shrink: 0 !important;
}
.qlvb-attach-hint-icon {
    font-size: 16px !important; width: 16px !important; height: 16px !important;
    color: var(--qlvb-text-muted, #6c757d) !important; cursor: help !important;
}
.qlvb-attach-dl-btn {
    display: inline-flex !important; align-items: center !important; justify-content: center !important;
    width: 34px !important; height: 34px !important;
    background: var(--qlvb-primary, #004780) !important;
    color: #fff !important; border-radius: 6px !important;
    text-decoration: none !important; transition: background 0.2s !important;
}
.qlvb-attach-dl-btn:hover { background: var(--qlvb-primary-dark, #003360) !important; }
.qlvb-attach-dl-btn .dashicons { font-size: 18px !important; width:18px !important; height:18px !important; color: #fff !important; }

/* =========================================================
   KHỐI 2: XEM TRỰC TIẾP — vtab selector
   ========================================================= */
.qlvb-vtabs {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 6px !important;
    padding: 12px 16px !important;
    background: #fff !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-top: none !important;
    border-bottom: none !important;
}
.qlvb-vtab-btn {
    display: inline-flex !important; align-items: center !important; gap: 5px !important;
    padding: 6px 14px !important;
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-radius: 6px !important;
    background: #f8f9fa !important; color: #1a1a2e !important;
    font-size: 13px !important; font-weight: 500 !important;
    cursor: pointer !important; transition: all 0.15s !important;
    font-family: inherit !important; text-transform: none !important;
    max-width: 220px !important; overflow: hidden !important;
    text-overflow: ellipsis !important; white-space: nowrap !important;
    letter-spacing: 0 !important; box-shadow: none !important;
}
.qlvb-vtab-btn .dashicons { font-size: 15px !important; width:15px !important; height:15px !important; color: inherit !important; flex-shrink: 0 !important; }
.qlvb-vtab-btn.is-active { background: var(--qlvb-primary, #004780) !important; color: #fff !important; border-color: var(--qlvb-primary, #004780) !important; }
.qlvb-vtab-btn:not(.is-active):hover { border-color: var(--qlvb-primary, #004780) !important; color: var(--qlvb-primary, #004780) !important; }
.qlvb-vtab-name { overflow: hidden !important; text-overflow: ellipsis !important; max-width: 160px !important; display: inline-block !important; }
.qlvb-vtab-num {
    display: inline-flex !important; align-items: center !important; justify-content: center !important;
    min-width: 20px !important; height: 20px !important; padding: 0 5px !important;
    background: rgba(255,255,255,0.25) !important; border-radius: 10px !important;
    font-size: 11px !important; font-weight: 700 !important; color: inherit !important;
    flex-shrink: 0 !important;
}
.qlvb-vtab-btn:not(.is-active) .qlvb-vtab-num { background: rgba(0,0,0,0.08) !important; }

/* Viewers */
.qlvb-vviewers {
    border: 1px solid var(--qlvb-border, #dee2e6) !important;
    border-top: none !important;
    border-radius: 0 0 8px 8px !important;
    overflow: hidden !important;
}
.qlvb-vviewer[hidden] { display: none !important; }

/* Toolbar trong viewer */
.qlvb-vtoolbar {
    display: flex !important; align-items: center !important; gap: 8px !important;
    padding: 8px 14px !important;
    background: #f8f9fa !important;
    border-bottom: 1px solid var(--qlvb-border, #dee2e6) !important;
    flex-wrap: wrap !important;
}
.qlvb-vtoolbar-icon { color: var(--qlvb-primary, #004780) !important; font-size: 18px !important; width:18px !important; height:18px !important; flex-shrink: 0 !important; }
.qlvb-vtoolbar-name { flex: 1 !important; font-size: 13px !important; font-weight: 600 !important; color: var(--qlvb-text, #1a1a2e) !important; overflow: hidden !important; text-overflow: ellipsis !important; white-space: nowrap !important; min-width: 0 !important; }
.qlvb-vtoolbar-size { font-size: 11px !important; color: var(--qlvb-text-muted, #6c757d) !important; flex-shrink: 0 !important; }
.qlvb-vtoolbar-actions { display: flex !important; gap: 6px !important; flex-shrink: 0 !important; }

/* Image viewer */
.qlvb-image-viewer {
    padding: 16px !important;
    background: #525659 !important;
    text-align: center !important;
    min-height: 200px !important;
    display: flex !important; align-items: center !important; justify-content: center !important;
}
.qlvb-image-viewer img { max-width: 100% !important; height: auto !important; border-radius: 4px !important; box-shadow: 0 4px 20px rgba(0,0,0,0.3) !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
    .qlvb-attach-item { padding: 10px 12px !important; gap: 10px !important; }
    .qlvb-attach-hint-icon { display: none !important; }
    .qlvb-vtabs { padding: 10px 12px !important; }
    .qlvb-vtab-name { max-width: 100px !important; }
    .qlvb-vtoolbar { padding: 8px 10px !important; }
    .qlvb-vtoolbar-actions { width: 100% !important; }
}