/* Страница /KnowledgeBase — единый файл стилей (подключается из Views/KnowledgeBase/*.cshtml через @section Styles).
   Вынесено из wwwroot/css/site.css (блоки «Knowledge Base: палитра» и «Knowledge Base: страница раздела»).

   Не дублировать в site.css / vd-shell / inline <style>.
   Перекрашивание под темы (light-office, blue, vibe, dark) — в palettes/*.css. */

/* --- Knowledge Base: корневые поверхности (индекс разделов) --- */
.vd-kb-root {
    background: var(--vd-surface-card, var(--vd-surface));
    color: var(--vd-text);
    border: 1px solid var(--vd-border) !important;
}
.vd-kb-root-head {
    background: linear-gradient(180deg, var(--vd-chrome-bg-soft, rgba(37, 99, 235, 0.15)) 0%, var(--vd-chrome-bg, #1b263b) 100%);
    color: var(--vd-chrome-text, #f8fafc);
    border-bottom: 1px solid var(--vd-chrome-border, rgba(255, 255, 255, 0.12)) !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.vd-kb-root-head h2,
.vd-kb-root-head .fw-bold {
    color: #fff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 0 18px rgba(0, 0, 0, 0.2);
}
.vd-kb-root-head .bi {
    color: rgba(255, 255, 255, 0.95) !important;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.45));
}
.vd-kb-root-head .btn.btn-primary {
    background: #fff !important;
    color: #0f172a !important;
    border: 1px solid rgba(255, 255, 255, 0.9) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.22), 0 1px 0 rgba(255, 255, 255, 0.95) inset !important;
    font-weight: 600;
}
.vd-kb-root-head .btn.btn-primary:hover {
    background: #f8fafc !important;
    color: #020617 !important;
    border-color: #fff !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28) !important;
}

/* Кнопка "Добавить раздел" — иконка + в кружке */
body.zen-body .vd-kb-root-head .kb-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}
body.zen-body .vd-kb-root-head .kb-add-icon-circle {
    width: 1.4rem;
    height: 1.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(2, 6, 23, 0.08);
    color: inherit;
    font-size: 0.95rem;
    line-height: 1;
}
body.zen-body .vd-kb-root-head .kb-add-btn:hover .kb-add-icon-circle {
    background: rgba(2, 6, 23, 0.12);
}

/* --- Knowledge Base: сайдбар / навигация --- */
.vd-kb-sidebar {
    background: var(--vd-surface-muted, rgba(0, 0, 0, 0.03));
}
.vd-kb-nav-title {
    color: var(--vd-text-muted);
    letter-spacing: 0.04em;
}
.vd-kb-nav .list-group-item {
    background: transparent;
    color: var(--vd-text);
    border-color: var(--vd-border);
}
.vd-kb-nav .list-group-item:hover {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.08));
    color: var(--vd-text-strong);
}
.vd-kb-nav .list-group-item.active {
    background: var(--vd-accent, #2563eb);
    border-color: var(--vd-accent, #2563eb);
    color: #fff;
}

/* --- Knowledge Base: основная область --- */
.vd-kb-main {
    background: var(--vd-surface, #fff);
}
.vd-kb-welcome-title {
    color: var(--vd-text-strong);
}
.vd-kb-welcome-lead {
    color: var(--vd-text-muted);
}
.vd-kb-hr {
    border-color: var(--vd-border);
    opacity: 1;
}

/* --- Knowledge Base: карточки статей --- */
.vd-kb-article-card {
    background: var(--vd-surface-card, var(--vd-surface));
    border-color: var(--vd-border) !important;
    color: var(--vd-text);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.vd-kb-article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.12)) !important;
}
.vd-kb-article-icon-wrap {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
}
.vd-kb-article-icon {
    color: var(--vd-accent, #2563eb);
}
.vd-kb-preview {
    color: var(--vd-text-muted);
}
.vd-kb-badge {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.15));
    color: var(--vd-accent-strong, var(--vd-accent));
}
.vd-kb-ext-link {
    color: var(--vd-accent) !important;
}

/* --- Knowledge Base: модалка --- */
.vd-kb-modal {
    background: var(--vd-surface-card, var(--vd-surface));
    color: var(--vd-text);
}
.vd-kb-modal-head {
    background: var(--vd-surface-muted, rgba(0, 0, 0, 0.04));
    color: var(--vd-text-strong);
    border-bottom: 1px solid var(--vd-border);
}
.vd-kb-modal-close {
    opacity: 0.75;
}
.vd-kb-modal-head--strong {
    background: linear-gradient(135deg, var(--vd-chrome-bg), var(--vd-chrome-bg-soft));
    color: var(--vd-chrome-text);
    border-bottom: 1px solid var(--vd-chrome-border);
}
.vd-kb-modal-head--strong .vd-kb-modal-close {
    filter: invert(1) grayscale(100%) brightness(1.8);
    opacity: 0.9;
}
.vd-kb-modal-head--accent {
    background: linear-gradient(135deg, var(--vd-accent, #2563eb), color-mix(in srgb, var(--vd-accent, #2563eb) 65%, #0f172a));
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.vd-kb-modal-head--accent .vd-kb-modal-close {
    filter: invert(1) grayscale(100%) brightness(1.8);
    opacity: 0.9;
}

/* --- Knowledge Base: страница раздела (Details) --- */
.vd-kb-details-sidebar {
    background: var(--vd-surface-card, var(--vd-surface));
    color: var(--vd-text);
    border: 1px solid var(--vd-border) !important;
}
.vd-kb-details-sidebar-head {
    background: var(--vd-surface-muted, rgba(0, 0, 0, 0.03));
    color: var(--vd-text-strong);
    border-bottom-color: var(--vd-border) !important;
}
.vd-kb-nav-parent {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.08)) !important;
    color: var(--vd-text-strong) !important;
}
.vd-kb-nav-parent:hover {
    background: color-mix(in srgb, var(--vd-accent, #2563eb) 18%, transparent) !important;
}
.vd-kb-nav-current {
    background: var(--vd-accent, #2563eb) !important;
    color: #fff !important;
    border-color: transparent !important;
}
.vd-kb-details-footer {
    background: var(--vd-surface-muted, rgba(0, 0, 0, 0.04));
    border-top: 1px solid var(--vd-border);
}
.vd-kb-details-main {
    background: var(--vd-surface-card, var(--vd-surface));
    color: var(--vd-text);
    border: 1px solid var(--vd-border) !important;
}
.vd-kb-details-main-head {
    background: var(--vd-surface-muted, rgba(0, 0, 0, 0.03));
    color: var(--vd-text-strong);
    border-bottom-color: var(--vd-border) !important;
}
.vd-kb-details-title {
    color: var(--vd-text-strong);
}
.vd-kb-meta-badge {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
    color: var(--vd-text-muted);
    border: 1px solid var(--vd-border);
    font-weight: 500;
}
.vd-kb-details-body {
    background: var(--vd-surface, #fff);
}
.vd-kb-details-subtitle {
    color: var(--vd-text-strong);
}
.vd-kb-empty-state {
    color: var(--vd-text-muted);
    opacity: 0.85;
}

.vd-kb-details-sidebar-wrap,
.vd-kb-details-main-wrap {
    border-radius: 18px;
}

.vd-kb-details-breadcrumb a {
    color: var(--vd-text-muted);
}

.vd-kb-details-breadcrumb a:hover {
    color: var(--vd-accent);
}

.vd-kb-details-page .vd-kb-details-main-head {
    background: color-mix(in srgb, var(--kb-card-bg, #fff) 88%, transparent);
}

/* --- Knowledge Base: контент статьи (markdown-рендер) --- */
.vd-kb-article-content {
    color: var(--vd-text);
}
.vd-kb-article-content a {
    color: var(--vd-accent);
}
.vd-kb-article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1rem 0;
    box-shadow: var(--vd-shadow-sm, 0 4px 12px rgba(15, 23, 42, 0.12));
}
.vd-kb-article-content h2,
.vd-kb-article-content h3 {
    margin-top: 2rem;
    font-weight: bold;
    color: var(--vd-text-strong);
}
.vd-kb-article-content p {
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

/* --- Knowledge Base: связанные дочерние разделы --- */
.vd-kb-child-link {
    background: var(--vd-surface-card, var(--vd-surface));
    border-color: var(--vd-border) !important;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.vd-kb-child-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.12)) !important;
}
.vd-kb-child-title {
    color: var(--vd-text-strong);
}

/* --- Sprint 5: новый индекс БЗ --- */

/* Токены страницы — переопределяются палитрой (индекс + просмотр статьи) */
.vd-kb-index,
.vd-kb-details-page {
    --kb-header-title: var(--vd-text-strong, #0f172a);
    --kb-header-lead: var(--vd-text-muted, #64748b);
    --kb-header-icon-bg: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
    --kb-header-icon-fg: var(--vd-accent, #2563eb);
    --kb-header-text-shadow: none;
    --kb-stage-from: var(--vd-glass-card-from, rgba(255, 255, 255, 0.88));
    --kb-stage-to: var(--vd-glass-card-to, rgba(248, 250, 252, 0.78));
    --kb-stage-border: var(--vd-border, #e2e8f0);
    --kb-stage-blur: 14px;
    --kb-card-bg: var(--vd-panel-strong, #ffffff);
    --kb-card-border: var(--vd-border, #e2e8f0);
    --kb-stage-divider: var(--vd-border, #e2e8f0);
    --kb-hero-from: color-mix(in srgb, var(--vd-accent) 12%, #ffffff);
    --kb-hero-to: color-mix(in srgb, var(--vd-accent) 6%, #f8fafc);
    --kb-hero-fg: var(--vd-text-strong, #0f172a);
    --kb-hero-muted: var(--vd-text-muted, #64748b);
    --kb-hero-search-bg: #ffffff;
    --kb-hero-chip-bg: rgba(255, 255, 255, 0.72);
    --kb-hero-chip-border: color-mix(in srgb, var(--vd-accent) 22%, var(--vd-border));
    --kb-help-banner-bg: color-mix(in srgb, var(--vd-accent) 10%, var(--kb-card-bg));
    --kb-help-banner-border: color-mix(in srgb, var(--vd-accent) 18%, var(--kb-card-border));
}

/* Шапка на «живых» обоях — белый текст (пресеты VibeDesk, Vibe Runner, Киберпанк и др.) */
body[data-color-palette="vibe"] .vd-kb-index,
body[data-color-palette="blue"] .vd-kb-index,
body[data-color-palette="cyber-blue"] .vd-kb-index,
body[data-color-palette="gray-office"] .vd-kb-index,
body[data-color-palette="dark"] .vd-kb-index,
body[data-color-palette="glass"] .vd-kb-index,
body[data-color-palette="rising-sun"] .vd-kb-index,
body[data-color-palette="cats-temple"] .vd-kb-index,
body[data-color-palette="vibe"] .vd-kb-details-page,
body[data-color-palette="blue"] .vd-kb-details-page,
body[data-color-palette="cyber-blue"] .vd-kb-details-page,
body[data-color-palette="gray-office"] .vd-kb-details-page,
body[data-color-palette="dark"] .vd-kb-details-page,
body[data-color-palette="glass"] .vd-kb-details-page,
body[data-color-palette="rising-sun"] .vd-kb-details-page,
body[data-color-palette="cats-temple"] .vd-kb-details-page {
    --kb-header-title: #ffffff;
    --kb-header-lead: rgba(255, 255, 255, 0.88);
    --kb-header-icon-bg: rgba(255, 255, 255, 0.2);
    --kb-header-icon-fg: #ffffff;
    --kb-header-text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 0 18px rgba(0, 0, 0, 0.22);
    --kb-hero-from: rgba(15, 23, 42, 0.72);
    --kb-hero-to: rgba(30, 41, 59, 0.58);
    --kb-hero-fg: #ffffff;
    --kb-hero-muted: rgba(255, 255, 255, 0.82);
    --kb-hero-search-bg: rgba(255, 255, 255, 0.96);
    --kb-hero-chip-bg: rgba(255, 255, 255, 0.14);
    --kb-hero-chip-border: rgba(255, 255, 255, 0.22);
}

body[data-color-palette="light-office"] .vd-kb-index,
body[data-color-palette="light-office"] .vd-kb-details-page {
    --kb-stage-from: rgba(255, 255, 255, 0.97);
    --kb-stage-to: rgba(248, 250, 252, 0.95);
    --kb-stage-blur: 16px;
    --kb-stage-border: rgba(226, 232, 240, 0.95);
    --kb-stage-divider: rgba(226, 232, 240, 0.9);
    --kb-card-bg: #ffffff;
    --kb-card-border: #e2e8f0;
    --kb-hero-from: #eef2ff;
    --kb-hero-to: #f5f3ff;
}

.vd-kb-details-page .vd-kb-details-sidebar-wrap.vd-kb-glass-stage {
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.1)),
                inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.vd-kb-details-page .vd-kb-stage-sidebar-inner {
    background: color-mix(in srgb, var(--kb-card-bg, #fff) 96%, transparent);
}

.vd-kb-details-page .vd-kb-stage-sidebar-inner h6 {
    color: var(--vd-text-muted);
}

.vd-kb-details-page .vd-kb-section-link {
    color: var(--vd-text-strong, var(--vd-text));
}

.vd-kb-details-page .vd-kb-section-link.active {
    background: color-mix(in srgb, var(--vd-accent) 14%, var(--kb-card-bg, #fff));
    color: var(--vd-accent);
}

body[data-color-palette="vibe"] .vd-kb-index,
body[data-color-palette="dark"] .vd-kb-index,
body[data-color-palette="blue"] .vd-kb-index,
body[data-color-palette="cyber-blue"] .vd-kb-index,
body[data-color-palette="gray-office"] .vd-kb-index,
body[data-color-palette="vibe"] .vd-kb-details-page,
body[data-color-palette="dark"] .vd-kb-details-page,
body[data-color-palette="blue"] .vd-kb-details-page,
body[data-color-palette="cyber-blue"] .vd-kb-details-page,
body[data-color-palette="gray-office"] .vd-kb-details-page {
    --kb-stage-from: rgba(15, 23, 42, 0.52);
    --kb-stage-to: rgba(30, 41, 59, 0.46);
    --kb-stage-border: rgba(255, 255, 255, 0.14);
    --kb-stage-divider: rgba(255, 255, 255, 0.12);
    --kb-card-bg: var(--vd-panel-strong);
    --kb-card-border: var(--vd-border);
}

body[data-color-palette="glass"] .vd-kb-index,
body[data-color-palette="glass"] .vd-kb-details-page {
    --kb-stage-from: rgba(255, 255, 255, 0.42);
    --kb-stage-to: rgba(248, 252, 255, 0.32);
    --kb-stage-border: rgba(255, 255, 255, 0.45);
    --kb-stage-divider: rgba(255, 255, 255, 0.28);
}

body[data-color-palette="rising-sun"] .vd-kb-index,
body[data-color-palette="cats-temple"] .vd-kb-index,
body[data-color-palette="rising-sun"] .vd-kb-details-page,
body[data-color-palette="cats-temple"] .vd-kb-details-page {
    --kb-stage-from: rgba(255, 255, 255, 0.82);
    --kb-stage-to: rgba(255, 252, 248, 0.74);
    --kb-card-bg: rgba(255, 255, 255, 0.96);
}

/* --- Hero banner --- */
.vd-kb-hero {
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(125deg, var(--kb-hero-from) 0%, var(--kb-hero-to) 55%, color-mix(in srgb, var(--vd-accent) 8%, var(--kb-hero-to)) 100%);
    border: 1px solid color-mix(in srgb, var(--vd-accent) 14%, var(--kb-stage-border));
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.08));
}

.vd-kb-hero-body {
    display: flex;
    align-items: stretch;
    gap: 1.5rem;
    padding: 2rem 2rem 1.75rem;
    min-height: 220px;
}

.vd-kb-hero-content {
    flex: 1 1 58%;
    min-width: 0;
    z-index: 1;
}

.vd-kb-hero-title {
    font-size: clamp(1.65rem, 2.5vw, 2.15rem);
    font-weight: 800;
    color: var(--kb-hero-fg);
    letter-spacing: -0.02em;
}

.vd-kb-hero-lead {
    color: var(--kb-hero-muted);
    font-size: 0.98rem;
    max-width: 36rem;
    line-height: 1.55;
}

.vd-kb-hero-search-wrap {
    max-width: 640px;
}

.vd-kb-hero-search {
    background: var(--kb-hero-search-bg);
    border-radius: 14px !important;
    overflow: hidden;
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.08);
    border: 1px solid color-mix(in srgb, var(--vd-accent) 12%, var(--kb-card-border));
}

.vd-kb-hero-search .input-group-text {
    background: transparent !important;
    color: var(--vd-text-muted);
    padding-left: 1rem;
}

.vd-kb-hero-search .form-control {
    background: transparent !important;
    color: var(--vd-text);
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
    font-size: 0.95rem;
}

.vd-kb-hero-search .form-control:focus {
    box-shadow: none !important;
}

.vd-kb-hero-filter-btn {
    background: color-mix(in srgb, var(--vd-accent) 10%, var(--kb-hero-search-bg)) !important;
    border: none !important;
    border-left: 1px solid color-mix(in srgb, var(--vd-accent) 12%, var(--kb-card-border)) !important;
    color: var(--vd-accent) !important;
    font-weight: 600;
    padding: 0 1.15rem;
    white-space: nowrap;
}

.vd-kb-hero-filter-btn:hover,
.vd-kb-hero-filter-btn:focus {
    background: color-mix(in srgb, var(--vd-accent) 16%, var(--kb-hero-search-bg)) !important;
    color: var(--vd-accent-strong, var(--vd-accent)) !important;
}

.vd-kb-filter-menu {
    border-radius: 12px;
    border-color: var(--kb-card-border);
    max-height: 280px;
    overflow-y: auto;
}

.vd-kb-hero-chips {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
}

.vd-kb-hero-chips-label {
    font-size: 0.78rem;
    color: var(--kb-hero-muted);
    margin-right: 0.15rem;
}

.vd-kb-hero-chip {
    border: 1px solid var(--kb-hero-chip-border);
    background: var(--kb-hero-chip-bg);
    color: var(--kb-hero-fg);
    font-size: 0.78rem;
    padding: 0.28rem 0.72rem;
    border-radius: 999px;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.vd-kb-hero-chip:hover {
    background: color-mix(in srgb, var(--vd-accent) 12%, var(--kb-hero-chip-bg));
    border-color: color-mix(in srgb, var(--vd-accent) 35%, var(--kb-hero-chip-border));
    color: var(--vd-accent);
}

.vd-kb-hero-art {
    flex: 0 0 240px;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    pointer-events: none;
}

.vd-kb-hero-art-glow {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in srgb, var(--vd-accent) 35%, transparent) 0%, transparent 70%);
    top: 10%;
    right: 8%;
    filter: blur(2px);
}

.vd-kb-hero-art-plinth {
    width: 150px;
    height: 150px;
    border-radius: 28px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.18));
    border: 1px solid rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    transform: translateY(8px) rotate(-4deg);
}

.vd-kb-hero-art-book {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--vd-accent), color-mix(in srgb, var(--vd-accent) 65%, #6366f1));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 8px 24px color-mix(in srgb, var(--vd-accent) 45%, transparent);
}

@media (max-width: 991.98px) {
    .vd-kb-hero-body {
        flex-direction: column;
        padding: 1.5rem 1.25rem;
        min-height: 0;
    }

    .vd-kb-hero-art {
        flex: none;
        height: 120px;
        align-items: center;
    }

    .vd-kb-hero-art-plinth {
        width: 110px;
        height: 110px;
        transform: none;
    }

    .vd-kb-hero-art-book {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .vd-kb-hero-filter-btn .vd-kb-filter-btn-label {
        display: none;
    }

    .vd-kb-hero-filter-btn .bi-funnel {
        margin: 0 !important;
    }
}

.vd-kb-index .vd-kb-page-header {
    padding: 0.25rem 0 1.25rem;
}

.vd-kb-page-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 14px;
    background: var(--kb-header-icon-bg);
    color: var(--kb-header-icon-fg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    box-shadow: var(--kb-header-text-shadow);
}

.vd-kb-page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--kb-header-title) !important;
    text-shadow: var(--kb-header-text-shadow);
}

.vd-kb-page-lead {
    color: var(--kb-header-lead) !important;
    text-shadow: var(--kb-header-text-shadow);
}

/* Единая glass-подложка (как на макете №2) */
.vd-kb-glass-stage {
    background: linear-gradient(145deg, var(--kb-stage-from) 0%, var(--kb-stage-to) 100%);
    backdrop-filter: blur(var(--kb-stage-blur)) saturate(1.08);
    -webkit-backdrop-filter: blur(var(--kb-stage-blur)) saturate(1.08);
    border: 1px solid var(--kb-stage-border);
    border-radius: 18px;
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.1)),
                inset 0 1px 0 rgba(255, 255, 255, 0.35);
    overflow: hidden;
}

.vd-kb-stage-sidebar {
    border-right: 1px solid var(--kb-stage-divider);
}

.vd-kb-stage-sidebar-inner {
    padding: 1.25rem 1rem;
    min-height: 100%;
}

.vd-kb-add-section-sidebar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid color-mix(in srgb, var(--vd-accent) 35%, var(--kb-card-border));
    background: color-mix(in srgb, var(--vd-accent) 6%, var(--kb-card-bg));
    color: var(--vd-accent);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.vd-kb-add-section-sidebar:hover {
    background: color-mix(in srgb, var(--vd-accent) 12%, var(--kb-card-bg));
    border-color: color-mix(in srgb, var(--vd-accent) 50%, var(--kb-card-border));
    color: var(--vd-accent-strong, var(--vd-accent));
    transform: translateY(-1px);
}

.vd-kb-add-section-icon {
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--vd-accent) 14%, transparent);
    font-size: 0.95rem;
}

.vd-kb-main-head-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--vd-text-strong);
}

.vd-kb-filter-badge {
    background: var(--vd-accent-soft);
    color: var(--vd-accent);
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-weight: 600;
}

.vd-kb-tile-meta {
    color: var(--vd-text-muted);
}

.vd-kb-tile-go {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    background: color-mix(in srgb, var(--vd-accent) 10%, var(--kb-card-bg));
    color: var(--vd-accent);
    transition: background 0.15s ease, transform 0.15s ease;
}

.vd-kb-article-tile:hover .vd-kb-tile-go {
    background: var(--vd-accent);
    color: #fff;
    transform: translateX(2px);
}

/* CTA «Не нашли ответ?» */
.vd-kb-help-banner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 1.25rem;
    padding: 1.15rem 1.25rem;
    border-radius: 16px;
    background: var(--kb-help-banner-bg);
    border: 1px solid var(--kb-help-banner-border);
}

.vd-kb-help-banner-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 12px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--vd-accent) 14%, var(--kb-card-bg));
    color: var(--vd-accent);
    font-size: 1.35rem;
}

.vd-kb-help-banner-text {
    flex: 1 1 220px;
    min-width: 0;
}

.vd-kb-help-banner-title {
    font-weight: 700;
    color: var(--vd-text-strong);
    margin-bottom: 0.15rem;
}

.vd-kb-help-banner-lead {
    color: var(--vd-text-muted);
    font-size: 0.88rem;
    line-height: 1.45;
}

.vd-kb-help-banner-btn {
    background: var(--vd-accent) !important;
    border-color: var(--vd-accent) !important;
    color: #fff !important;
    font-weight: 600;
    padding: 0.55rem 1.35rem;
    white-space: nowrap;
    margin-left: auto;
}

.vd-kb-help-banner-btn:hover {
    background: var(--vd-accent-strong, var(--vd-accent)) !important;
    border-color: var(--vd-accent-strong, var(--vd-accent)) !important;
    color: #fff !important;
}

@media (max-width: 575.98px) {
    .vd-kb-help-banner-btn {
        width: 100%;
        margin-left: 0;
    }
}

.vd-kb-stage-label {
    color: var(--vd-text-muted);
    letter-spacing: 0.05em;
}

.vd-kb-manage-link {
    color: var(--vd-text-muted) !important;
}

.vd-kb-manage-link:hover {
    color: var(--vd-accent) !important;
}

.vd-kb-stage-main {
    min-width: 0;
}

.vd-kb-toolbar {
    border-bottom: 1px solid var(--kb-stage-divider);
    background: color-mix(in srgb, var(--kb-card-bg) 55%, transparent);
}

.vd-kb-search-icon {
    background: var(--kb-card-bg) !important;
    border-color: var(--kb-card-border) !important;
    color: var(--vd-text-muted) !important;
}

.vd-kb-search-input {
    background: var(--kb-card-bg) !important;
    border-color: var(--kb-card-border) !important;
    color: var(--vd-text) !important;
}

.vd-kb-search-input:focus {
    border-color: var(--vd-accent) !important;
    box-shadow: 0 0 0 3px var(--vd-accent-soft) !important;
}

.vd-kb-view-toggle .btn-light {
    background: var(--kb-card-bg);
    border-color: var(--kb-card-border);
    color: var(--vd-text-muted);
}

.vd-kb-view-toggle .btn-light.active {
    background: var(--vd-accent-soft);
    border-color: color-mix(in srgb, var(--vd-accent) 35%, var(--kb-card-border));
    color: var(--vd-accent);
}

@media (max-width: 991.98px) {
    .vd-kb-stage-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--kb-stage-divider);
    }
}

.vd-kb-sections-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.vd-kb-section-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
    color: var(--vd-text);
    font-size: 0.9rem;
    transition: background 0.15s ease;
}

.vd-kb-section-link:hover {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.08));
    color: var(--vd-text-strong);
}

.vd-kb-section-link.active {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
    color: var(--vd-accent, #2563eb);
    font-weight: 600;
}

.vd-kb-section-group {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.vd-kb-section-link__label {
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.vd-kb-section-chevron {
    font-size: 0.75rem;
    transition: transform 0.15s ease;
    opacity: 0.7;
}

.vd-kb-section-group.is-expanded > .vd-kb-section-link--parent .vd-kb-section-chevron {
    transform: rotate(90deg);
}

.vd-kb-section-children {
    display: none;
    flex-direction: column;
    gap: 0.1rem;
    padding-left: 0.35rem;
    margin-left: 0.55rem;
    border-left: 2px solid color-mix(in srgb, var(--vd-accent, #2563eb) 22%, transparent);
}

.vd-kb-section-group.is-expanded > .vd-kb-section-children {
    display: flex;
}

.vd-kb-section-link--child {
    padding: 0.45rem 0.65rem;
    font-size: 0.84rem;
    color: var(--vd-text-muted, #64748b);
}

.vd-kb-section-link--child.active {
    color: var(--vd-accent, #2563eb);
}

.vd-kb-section-count {
    font-size: 0.75rem;
    color: var(--vd-text-muted);
    background: color-mix(in srgb, var(--vd-text) 6%, transparent);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
}

.vd-kb-search .form-control:focus,
.vd-kb-search .input-group-text {
    box-shadow: none;
    border-color: var(--vd-border);
}

.vd-kb-article-tile {
    color: inherit;
    background: var(--kb-card-bg) !important;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid var(--kb-card-border) !important;
    box-shadow: var(--vd-shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.06)) !important;
}

.vd-kb-article-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--vd-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.12)) !important;
}

.vd-kb-tile-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 12px;
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
    color: var(--vd-accent, #2563eb);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.vd-kb-tile-title {
    color: var(--vd-text-strong);
    font-size: 1rem;
}

.vd-kb-tile-preview {
    color: var(--vd-text-muted);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.vd-kb-tile-tag {
    background: var(--vd-accent-soft, rgba(37, 99, 235, 0.12));
    color: var(--vd-accent, #2563eb);
    font-weight: 500;
}

.vd-kb-draft-badge {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.vd-kb-article-tile--draft {
    border: 1px dashed rgba(245, 158, 11, 0.45) !important;
    background: rgba(245, 158, 11, 0.04);
}

.vd-kb-draft-banner {
    border: 1px solid rgba(245, 158, 11, 0.35);
    background: rgba(245, 158, 11, 0.08);
    color: var(--vd-text, #1e293b);
    border-radius: 0.75rem;
    padding: 0.65rem 1rem;
}

.vd-kb-tile-chevron {
    color: var(--vd-text-muted);
    align-self: center;
}

/* legacy help card removed from grid */

.vd-kb-articles-list .vd-kb-article-tile .card-body {
    flex-direction: row;
    align-items: center;
}

/* --- Sprint 5: редактор статей (Create / Edit) --- */
.vd-kb-editor-page {
    max-width: 1280px;
    margin: 0 auto;
}

.vd-kb-editor-topbar {
    background: var(--vd-panel-strong, #fff);
    border: 1px solid var(--vd-border) !important;
}

.vd-kb-editor-page-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--vd-text-strong);
}

.vd-kb-editor-back {
    width: 2.25rem;
    height: 2.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.vd-kb-editor-card {
    background: var(--vd-panel-strong, #fff);
    border: 1px solid var(--vd-border) !important;
}

.vd-kb-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 0.75rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--vd-border);
    border-radius: 12px;
    background: var(--vd-panel-soft, #f8fafc);
}

.vd-kb-editor-block-select {
    width: auto;
    min-width: 9.5rem;
    max-width: 11rem;
    border-color: var(--vd-border);
    background: var(--vd-panel-strong, #fff);
    font-size: 0.82rem;
}

.vd-kb-editor-toolbar-group {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    padding: 0.1rem;
    border-radius: 8px;
    background: var(--vd-panel-strong, #fff);
    border: 1px solid var(--vd-border);
}

.vd-kb-editor-toolbar-group .btn {
    border: none;
    color: var(--vd-text-muted);
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.vd-kb-editor-toolbar-group .btn:hover,
.vd-kb-editor-toolbar-group .btn:focus {
    background: var(--vd-accent-soft);
    color: var(--vd-accent);
}

.vd-kb-editor-area {
    min-height: 280px;
    max-height: 480px;
    overflow-y: auto;
    line-height: 1.65;
    border-radius: 12px;
    border: 1px solid var(--vd-border);
    background: var(--vd-panel-strong, #fff);
    color: var(--vd-text);
    padding: 1rem 1.15rem;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.vd-kb-editor-area:focus {
    border-color: var(--vd-accent);
    box-shadow: 0 0 0 3px var(--vd-accent-soft);
}

.vd-kb-editor-area:empty::before {
    content: attr(data-placeholder);
    color: var(--vd-text-muted);
    pointer-events: none;
}

.vd-kb-editor-area h2 {
    font-size: 1.35rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--vd-text-strong);
}

.vd-kb-editor-area h3 {
    font-size: 1.1rem;
    margin-top: 0.85rem;
    margin-bottom: 0.4rem;
    font-weight: 700;
    color: var(--vd-text-strong);
}

.vd-kb-editor-area p {
    margin-bottom: 0.75rem;
}

.vd-kb-editor-area ul,
.vd-kb-editor-area ol {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
}

.vd-kb-editor-area blockquote {
    margin: 0.75rem 0;
    padding: 0.65rem 1rem;
    border-left: 3px solid var(--vd-accent);
    background: var(--vd-accent-soft);
    border-radius: 0 8px 8px 0;
    color: var(--vd-text);
}

.vd-kb-editor-area code {
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    background: color-mix(in srgb, var(--vd-text) 8%, transparent);
    font-size: 0.9em;
}

.vd-kb-editor-area a {
    color: var(--vd-accent);
}

.vd-kb-editor-area img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 0.5rem 0;
}

.vd-kb-editor-area hr {
    border: none;
    border-top: 1px solid var(--vd-border);
    margin: 1rem 0;
}

.vd-kb-editor-dropzone {
    border: 2px dashed color-mix(in srgb, var(--vd-accent) 30%, var(--vd-border));
    border-radius: 14px;
    padding: 1.75rem 1rem;
    text-align: center;
    background: color-mix(in srgb, var(--vd-accent) 4%, var(--vd-panel-strong));
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.vd-kb-editor-dropzone.dragover {
    border-color: var(--vd-accent);
    background: var(--vd-accent-soft);
}

.vd-kb-editor-dropzone-icon {
    font-size: 2rem;
    color: var(--vd-accent);
    margin-bottom: 0.5rem;
}

.vd-kb-editor-gallery {
    min-height: 180px;
    border: 1px solid var(--vd-border);
    border-radius: 14px;
    padding: 0.75rem;
    background: var(--vd-panel-soft, #f8fafc);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 280px;
    overflow-y: auto;
}

.vd-kb-editor-gallery-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.45rem;
    border-radius: 10px;
    background: var(--vd-panel-strong, #fff);
    border: 1px solid var(--vd-border);
}

.vd-kb-editor-gallery-item img {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.vd-kb-editor-settings {
    z-index: 2;
}

.vd-kb-editor-gallery-item .small {
    flex: 1;
    min-width: 0;
}

.vd-kb-editor-footer .form-text {
    max-width: 28rem;
}

@media (max-width: 991.98px) {
    .vd-kb-editor-settings {
        position: static !important;
    }

    .vd-kb-editor-toolbar {
        gap: 0.35rem;
    }

    .vd-kb-editor-block-select {
        width: 100%;
        max-width: none;
    }
}

/* Предпросмотр статьи в редакторе */
.vd-kb-preview-modal .modal-body {
    background: color-mix(in srgb, var(--vd-text) 3%, transparent);
}

.vd-kb-preview-card {
    background: var(--vd-panel-strong, #fff);
}

.vd-kb-preview-head {
    background: var(--vd-panel-strong, #fff) !important;
}

.vd-kb-preview-title {
    font-size: 1.65rem;
    color: var(--vd-text-strong);
    line-height: 1.25;
}