/* ER Diagram Page */

.er-page {
    min-height: 100vh;
    background: #fff;
}

.er-page .nb-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    background: #fff;
    border-bottom: 1px solid var(--bs-border-color, #dee2e6);
    gap: 12px;
}

.er-page .nb-left {
    flex-shrink: 0;
}

.er-page .nb-center {
    flex: 1;
    min-width: 0;
    text-align: center;
}

.er-page-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--bs-body-color);
}

.er-page .nb-right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.er-depth-label {
    font-size: 13px;
    color: var(--bs-secondary-color, #6c757d);
    white-space: nowrap;
    margin: 0;
}

.er-depth-select {
    width: auto;
    min-width: 80px;
}

/* Main content area */
.er-content {
    padding-top: 56px;
}

/* Draggable canvas viewport */
.er-canvas {
    position: relative;
    width: 100%;
    height: calc(100vh - 56px);
    overflow: hidden;
    cursor: grab;
    background:
        radial-gradient(circle, var(--bs-border-color, #dee2e6) 1px, transparent 1px);
    background-size: 20px 20px;
}

.er-canvas-inner {
    transform-origin: 0 0;
    will-change: transform;
    display: inline-block;
    padding: 40px;
}

.er-diagram-container {
    display: inline-block;
}

.er-diagram-container .mermaid,
.er-diagram-container pre {
    background: transparent;
    border: none;
    font-family: inherit;
    margin: 0;
    padding: 0;
}

.er-diagram-container .mermaid svg,
.er-diagram-container svg {
    max-width: none;
}

/* Dark mode */
[data-bs-theme="dark"] .er-page {
    background: var(--bs-body-bg);
}

[data-bs-theme="dark"] .er-page .nb-bar {
    background: var(--bs-body-bg);
    border-bottom-color: var(--bs-border-color);
}

/* ER Diagram Inline Card (embedded in _stage_relations) */
.er-card-diagram {
    overflow: auto;
    text-align: center;
    transition: opacity .2s;
}

.er-card-diagram .mermaid {
    background: transparent;
    border: none;
    font-family: inherit;
    display: inline-block;
}

.er-card-diagram .mermaid svg {
    max-width: none;
}