.bmc-xml {
    --x2d-surface: var(--surface, #ffffff);
    --x2d-surface-muted: var(--surface-muted, #f6f8fb);
    --x2d-border: var(--border, #d8e0ea);
    --x2d-text-main: var(--text-main, #142133);
    --x2d-text-muted: var(--text-muted, #5a6b82);
    --x2d-primary: var(--primary, #3559e0);
    --x2d-primary-dark: var(--primary-dark, #2847bc);
    --x2d-accent: var(--accent, #0ea5b7);
    --x2d-shadow-soft: var(--shadow-soft, 0 10px 26px rgba(20, 33, 51, .08));
}

.x2d-shell {
    background: linear-gradient(150deg, color-mix(in srgb, var(--x2d-surface) 88%, #eef3ff 12%), var(--x2d-surface-muted));
    border: 1px solid var(--x2d-border);
    border-radius: 18px;
    box-shadow: var(--x2d-shadow-soft);
    padding: 16px;
    margin-top: 8px;
}

.x2d-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.x2d-kicker {
    margin: 0;
    font-size: 12px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--x2d-text-muted);
}

.x2d-status {
    margin: 0;
    font-size: 13px;
    color: var(--x2d-text-main);
    background: color-mix(in srgb, var(--x2d-accent) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--x2d-accent) 30%, transparent);
    border-radius: 999px;
    padding: 4px 10px;
}

.x2d-panel {
    background: var(--x2d-surface);
    border: 1px solid var(--x2d-border);
    border-radius: 14px;
    padding: 14px;
}

.x2d-panel + .x2d-panel {
    margin-top: 12px;
}

.x2d-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.x2d-panel-head h2 {
    margin: 0;
    font-size: 1rem;
}

.x2d-panel-head p {
    margin: 0;
    color: var(--x2d-text-muted);
    font-size: 13px;
}

.x2d-code {
    width: 100%;
    min-height: 220px;
    border-radius: 12px;
    border: 1px solid var(--x2d-border);
    background: color-mix(in srgb, var(--x2d-surface-muted) 86%, #ffffff 14%);
    color: var(--x2d-text-main);
    padding: 12px;
    resize: vertical;
    line-height: 1.55;
    font-size: 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

.x2d-code:focus {
    outline: none;
    border-color: var(--x2d-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--x2d-primary) 22%, transparent);
}

.x2d-code-output {
    min-height: 280px;
}

.x2d-action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin: 12px 0;
}

.x2d-spacer {
    display: none;
}

.x2d-btn {
    border: 1px solid var(--x2d-border);
    background: var(--x2d-surface);
    color: var(--x2d-text-main);
    padding: 10px 12px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.x2d-btn:hover {
    transform: translateY(-1px);
}

.x2d-btn-primary {
    background: linear-gradient(140deg, var(--x2d-primary), var(--x2d-primary-dark));
    color: #fff;
    border-color: color-mix(in srgb, var(--x2d-primary-dark) 60%, #000 40%);
}

.x2d-btn-muted {
    background: var(--x2d-surface);
}

.x2d-alert {
    margin: 10px 0 0;
    font-size: 13px;
    color: #c13737;
    min-height: 20px;
}

.x2d-prose-wrap {
    padding-top: 28px;
}

.x2d-prose h2 {
    margin-top: 26px;
    margin-bottom: 10px;
}

.x2d-list {
    margin: 10px 0 0;
}

.x2d-note {
    margin-top: 20px;
    border: 1px solid color-mix(in srgb, #f0b429 40%, var(--x2d-border));
    background: color-mix(in srgb, #f0b429 12%, var(--x2d-surface));
    border-radius: 14px;
    padding: 14px;
}

.x2d-note h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 1rem;
}

.x2d-update {
    margin-top: 24px;
    padding: 16px;
    border-radius: 14px;
    border: 1px dashed var(--x2d-border);
    background: color-mix(in srgb, var(--x2d-surface-muted) 90%, transparent);
}

@media (min-width: 992px) {
    .x2d-shell {
        padding: 20px;
    }

    .x2d-action-row {
        grid-template-columns: auto auto 1fr auto auto;
        align-items: center;
    }

    .x2d-spacer {
        display: block;
    }

    .x2d-code {
        min-height: 260px;
    }
}