.bkbg-mdp-wrap {
    font-family: system-ui, -apple-system, sans-serif;
}

.bkbg-mdp-title {
    font-family:      var(--bkbg-mdp-tt-font-family, inherit);
    font-size:        var(--bkbg-mdp-tt-font-size-d, 24px);
    font-weight:      var(--bkbg-mdp-tt-font-weight, 700);
    font-style:       var(--bkbg-mdp-tt-font-style, normal);
    text-decoration:  var(--bkbg-mdp-tt-text-decoration, none);
    text-transform:   var(--bkbg-mdp-tt-text-transform, none);
    line-height:      var(--bkbg-mdp-tt-line-height-d, 1.2);
    letter-spacing:   var(--bkbg-mdp-tt-letter-spacing-d, normal);
    word-spacing:     var(--bkbg-mdp-tt-word-spacing-d, normal);
    margin: 0 0 14px;
}

.bkbg-mdp-container {
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid;
}

/* Toolbar */
.bkbg-mdp-toolbar {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    gap: 4px;
    flex-wrap: wrap;
}

.bkbg-mdp-tool-btn {
    background: rgba(255, 255, 255, 0.12);
    color: inherit;
    border: none;
    border-radius: 5px;
    padding: 4px 9px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    transition: background 0.15s, color 0.15s;
    line-height: 1.4;
}

.bkbg-mdp-tool-btn:hover {
    background: rgba(255, 255, 255, 0.22);
}

.bkbg-mdp-toolbar-sep {
    width: 1px;
    height: 18px;
    background: rgba(255, 255, 255, 0.15);
    margin: 0 4px;
}

.bkbg-mdp-toolbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 6px;
}

.bkbg-mdp-copy-btn {
    border: none;
    border-radius: 5px;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    transition: opacity 0.2s;
}

.bkbg-mdp-copy-btn:hover { opacity: 0.85; }

/* Split area */
.bkbg-mdp-split {
    display: flex;
    height: 380px;
}

.bkbg-mdp-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.bkbg-mdp-pane-label {
    padding: 6px 12px;
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.bkbg-mdp-editor {
    flex: 1;
    width: 100%;
    border: none;
    padding: 14px;
    font-family: 'Fira Mono', 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.7;
    resize: none;
    outline: none;
    tab-size: 2;
    box-sizing: border-box;
}

.bkbg-mdp-preview-pane {
    flex: 1;
    overflow: auto;
    padding: 14px 18px;
    font-size: 15px;
    line-height: 1.75;
    box-sizing: border-box;
}

/* Preview typography */
.bkbg-mdp-preview-pane h1,
.bkbg-mdp-preview-pane h2,
.bkbg-mdp-preview-pane h3,
.bkbg-mdp-preview-pane h4,
.bkbg-mdp-preview-pane h5,
.bkbg-mdp-preview-pane h6 {
    margin: 1.2em 0 0.5em;
    font-weight: 700;
    line-height: 1.25;
}

.bkbg-mdp-preview-pane h1 { font-size: 2em; }
.bkbg-mdp-preview-pane h2 { font-size: 1.5em; border-bottom: 1px solid #e5e7eb; padding-bottom: 4px; }
.bkbg-mdp-preview-pane h3 { font-size: 1.25em; }
.bkbg-mdp-preview-pane h4 { font-size: 1.05em; }
.bkbg-mdp-preview-pane p { margin: 0.75em 0; }
.bkbg-mdp-preview-pane ul, .bkbg-mdp-preview-pane ol { padding-left: 1.8em; margin: 0.75em 0; }
.bkbg-mdp-preview-pane li { margin: 0.25em 0; }
.bkbg-mdp-preview-pane blockquote { border-left: 4px solid #0ea5e9; margin: 1em 0; padding: 8px 16px; background: #f0f9ff; border-radius: 0 6px 6px 0; color: #0369a1; }
.bkbg-mdp-preview-pane code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-family: 'Fira Mono','Consolas',monospace; font-size: 0.87em; }
.bkbg-mdp-preview-pane pre { background: #1e293b; color: #e2e8f0; padding: 14px 16px; border-radius: 8px; overflow: auto; margin: 1em 0; }
.bkbg-mdp-preview-pane pre code { background: none; color: inherit; padding: 0; font-size: 13px; }
.bkbg-mdp-preview-pane a { color: #0ea5e9; text-decoration: underline; }
.bkbg-mdp-preview-pane a:hover { opacity: 0.8; }
.bkbg-mdp-preview-pane hr { border: none; border-top: 1px solid #e5e7eb; margin: 1.5em 0; }
.bkbg-mdp-preview-pane table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: 14px; }
.bkbg-mdp-preview-pane th, .bkbg-mdp-preview-pane td { border: 1px solid #d1d5db; padding: 8px 12px; }
.bkbg-mdp-preview-pane th { background: #f9fafb; font-weight: 600; }
.bkbg-mdp-preview-pane img { max-width: 100%; border-radius: 6px; }

/* Status bar */
.bkbg-mdp-statusbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 14px;
    font-size: 11px;
    border-top: 1px solid;
}

@media (max-width: 640px) {
    .bkbg-mdp-split {
        flex-direction: column;
        height: auto;
    }
    .bkbg-mdp-pane { height: 260px; }
    .bkbg-mdp-toolbar { padding: 6px 8px; gap: 3px; }
}

@media (max-width: 1024px) {
    .bkbg-mdp-title { font-size: var(--bkbg-mdp-tt-font-size-t, 24px); line-height: var(--bkbg-mdp-tt-line-height-t, 1.2); letter-spacing: var(--bkbg-mdp-tt-letter-spacing-t, normal); word-spacing: var(--bkbg-mdp-tt-word-spacing-t, normal); }
}
@media (max-width: 767px) {
    .bkbg-mdp-title { font-size: var(--bkbg-mdp-tt-font-size-m, 24px); line-height: var(--bkbg-mdp-tt-line-height-m, 1.2); letter-spacing: var(--bkbg-mdp-tt-letter-spacing-m, normal); word-spacing: var(--bkbg-mdp-tt-word-spacing-m, normal); }
}