.mermaid-viewer-wrapper {
    position: relative;
    border: 1px solid #2a3344;
    border-radius: 8px;
    overflow: hidden;
    margin: 20px 0;
    background: #0f172a;
}

.mermaid-viewer-toolbar {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    background: rgba(15, 23, 42, 0.6);
    padding: 4px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
}

.mermaid-viewer-toolbar .mv-btn {
    background: #1e293b;
    color: #e2e8f0;
    border: 1px solid #334155;
    padding: 6px 10px;
    cursor: pointer;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1;
    font-family: inherit;
    min-width: 32px;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.mermaid-viewer-toolbar .mv-btn:hover {
    background: #334155;
    border-color: #475569;
}

.mermaid-viewer-toolbar .mv-btn:focus-visible {
    outline: 2px solid #60a5fa;
    outline-offset: 1px;
}

.mermaid-viewer-container {
    overflow: hidden;
    padding: 20px;
    background: #0f172a;
    min-height: 200px;
    cursor: grab;
}

.mermaid-viewer-container.is-panning {
    cursor: grabbing;
}

.mermaid-viewer-stage {
    transform-origin: 0 0;
    transition: transform 0.15s ease;
    will-change: transform;
    display: inline-block;
    width: 100%;
}

.mermaid-viewer-stage.is-dragging {
    transition: none;
}

.mermaid-viewer-stage .mermaid {
    margin: 0;
    background: transparent;
}

.mermaid-viewer-stage svg {
    display: block;
    max-width: none !important;
    height: auto;
}

/* Fullscreen overlay */
.mermaid-viewer-fullscreen {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.mermaid-viewer-fullscreen .mermaid-viewer-wrapper {
    width: 100%;
    height: 100%;
    max-width: 95vw;
    max-height: 95vh;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.mermaid-viewer-fullscreen .mermaid-viewer-container {
    flex: 1;
    min-height: 0;
}

.mermaid-viewer-close {
    position: absolute;
    top: 20px;
    left: 20px;
    background: #1e293b;
    color: #e2e8f0;
    border: 1px solid #334155;
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    z-index: 100000;
    font-family: inherit;
}

.mermaid-viewer-close:hover {
    background: #334155;
}