/* =========================================================
   KNOWLEDGE BASE (folders) + BRAND KIT additions
========================================================= */

.kb-header-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.kb-layout {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

/* ---------- folder sidebar ---------- */

.kb-folders {
    position: sticky;
    top: calc(var(--topbar) + 12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    padding: 10px;
}

.kb-folders-label {
    padding: 4px 8px 8px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .05em;
    color: var(--text-3);
}

.kb-folder {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 9px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    font: inherit;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-2);
    text-align: left;
    cursor: pointer;
}

.kb-folder:hover { background: var(--surface-soft); color: var(--text); }
.kb-folder.active { background: var(--primary-soft-2); color: var(--primary-dark); }
.kb-folder svg { width: 15px; height: 15px; flex: 0 0 auto; }

.kb-folder-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.kb-folder-count {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--text-3);
}

.kb-folder-sep { height: 1px; margin: 6px 4px; background: var(--border); }

.kb-folder-empty { padding: 6px 9px; font-size: 11px; color: var(--text-3); }

/* ---------- main ---------- */

.kb-folder-heading { min-width: 0; }

.kb-folder-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.kb-folder-desc { margin-top: 2px; font-size: 11.5px; color: var(--text-3); }

.kb-folder-actions { display: inline-flex; gap: 4px; }

.kb-link-btn {
    border: 0;
    background: none;
    padding: 2px 4px;
    font: inherit;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-3);
    cursor: pointer;
}

.kb-link-btn:hover { color: var(--primary-dark); text-decoration: underline; }
.kb-link-btn.is-danger:hover { color: var(--danger); }

.kb-row { cursor: pointer; }
.kb-row:hover td { background: var(--surface-soft); }

.kb-title-cell { display: flex; flex-direction: column; gap: 2px; }
.kb-title { font-weight: 800; font-size: 12.5px; color: var(--text); }
.kb-sub { font-size: 10.5px; color: var(--text-3); }

.kb-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 10.5px;
    font-weight: 700;
    background: var(--surface-hover);
    color: var(--text-2);
}

.kb-status.is-ready { background: var(--success-soft); color: var(--success); }
.kb-status.is-failed { background: var(--danger-soft); color: var(--danger); }
.kb-status.is-working .kb-dot { animation: kb-pulse 1.2s ease-in-out infinite; }

.kb-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

@keyframes kb-pulse { 50% { opacity: .25; } }

.kb-empty-row td { padding: 38px 20px !important; text-align: center; }
.kb-empty-row h3 { margin: 0 0 6px; font-size: 15px; font-weight: 800; color: var(--text); }
.kb-empty-row p { margin: 0 auto 14px; max-width: 46ch; font-size: 12.5px; line-height: 1.6; color: var(--text-2); }

/* ---------- add modal ---------- */

.bk-source-tab-btn.is-soon { opacity: .5; cursor: not-allowed; }
.bk-source-tab-btn em { font-style: normal; font-size: 9.5px; font-weight: 800; color: var(--text-3); margin-left: 4px; }

.bk-dropzone { width: 100%; font: inherit; cursor: pointer; }
.bk-dropzone.is-over { border-color: var(--primary); background: var(--primary-soft-2); }
.bk-dropzone.has-file { border-style: solid; border-color: var(--success); }

.kb-drop-title { display: block; font-size: 13px; font-weight: 700; color: var(--text); }
.kb-drop-hint { display: block; margin-top: 4px; font-size: 11px; color: var(--text-3); }

.bk-pending-files { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.bk-pending-file {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 6px 4px 10px; border-radius: 999px;
    background: var(--surface-soft); font-size: 11.5px; color: var(--text-2);
}
.bk-pending-file-remove {
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; border: none; border-radius: 50%;
    background: transparent; color: var(--text-3); font-size: 13px; line-height: 1;
    cursor: pointer;
}
.bk-pending-file-remove:hover { background: var(--surface-hover); color: var(--text); }

.bk-form-group label em { font-weight: 500; font-style: normal; color: var(--text-3); }

.kb-folder-modal { max-width: 440px; }

/* ---------- drawer ---------- */

.kb-drawer-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kb-themes { display: flex; flex-direction: column; gap: 8px; }

.kb-theme {
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-soft);
}

.kb-theme-name { font-size: 12px; font-weight: 800; color: var(--text); }
.kb-theme-desc { margin-top: 2px; font-size: 11.5px; line-height: 1.5; color: var(--text-2); }

.kb-passage {
    padding: 8px 10px;
    border-left: 3px solid var(--border-strong);
    background: var(--surface);
    font-size: 11.5px;
    line-height: 1.55;
    color: var(--text-2);
    white-space: pre-wrap;
}

.kb-passage + .kb-passage { margin-top: 8px; }
.kb-passage-loc { display: block; margin-bottom: 3px; font-size: 10px; font-weight: 800; color: var(--text-3); }

.kb-meta {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 12px;
    font-size: 12px;
}

.kb-meta dt { color: var(--text-3); }
.kb-meta dd { margin: 0; font-weight: 600; color: var(--text); overflow-wrap: anywhere; }

.kb-error {
    padding: 10px 12px;
    border-radius: 8px;
    background: var(--danger-soft);
    color: var(--danger);
    font-size: 12px;
    line-height: 1.5;
}

/* ---------- brand kit additions ---------- */

.bk-logo-row { display: flex; align-items: center; gap: 12px; }

.bk-logo-box {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border: 1px dashed var(--border-strong);
    border-radius: 10px;
    background: var(--surface-soft);
    font-size: 9.5px;
    color: var(--text-3);
    overflow: hidden;
    text-align: center;
}

.bk-logo-box.is-dark { background: #0c151e; color: #a3b4c4; }
.bk-logo-box img { width: 100%; height: 100%; object-fit: contain; }

.bk-color-name { margin-bottom: 6px; font-weight: 700; }

@media (max-width: 900px) {
    .kb-layout { grid-template-columns: 1fr; }
    .kb-folders { position: static; }
}

/* composer: folder chip count */
.studio-folder-count { font-size: 10px; color: var(--text-3); margin-left: 2px; }