/**
 * Flow Diagram Styles
 * Adapted for BRI Studio theme
 */

:root {
    --bhi-flow-primary: var(--wp--preset--color--primary, #2271b1);
    --bhi-flow-secondary: var(--wp--preset--color--secondary, #50575e);
    --bhi-flow-background: var(--wp--preset--color--background, #ffffff);
    --bhi-flow-text: var(--wp--preset--color--foreground, #1e1e1e);
    --bhi-flow-border: var(--wp--preset--color--border, #e0e0e0);
    --bhi-flow-shadow: rgba(0, 0, 0, 0.1);
    --bhi-flow-shadow-hover: rgba(0, 0, 0, 0.15);
}

.bhi-flow-diagram-container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
    flex-wrap: wrap;
    gap: 0;
    background: var(--bhi-flow-background);
    border-radius: 8px;
}

/* Backward compatibility - horizontal flow */
.bhi-flow-diagram-container.bhi-flow-horizontal {
    flex-direction: row !important;
    flex-wrap: nowrap;
    align-items: center;
}

/* Backward compatibility - vertical flow */
.bhi-flow-diagram-container.bhi-flow-vertical {
    flex-direction: column !important;
    flex-wrap: nowrap;
    align-items: center;
}

/* Flexible flow - allows mixed directions */
.bhi-flow-diagram-container.bhi-flow-flexible {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
}

/* Grid-based flow - for advanced positioning */
.bhi-flow-diagram-container.bhi-flow-grid {
    display: grid;
    grid-auto-flow: dense;
    padding: 20px;
    margin: 20px 0;
    position: relative;
    background: var(--bhi-flow-background);
    border: 1px solid var(--bhi-flow-border);
    border-radius: 8px;
    gap: 10px;
}

.bhi-flow-grid .bhi-flow-node {
    position: relative;
    z-index: 2;
}

.bhi-flow-grid .bhi-flow-connector {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Connector SVG styling - use theme colors */
.bhi-flow-connector svg {
    color: var(--bhi-flow-primary);
    display: block;
    flex-shrink: 0;
}

.bhi-flow-connector svg line,
.bhi-flow-connector svg path {
    stroke: var(--bhi-flow-primary, #2271b1) !important;
    stroke-width: 2px;
}

.bhi-flow-connector svg polygon {
    fill: var(--bhi-flow-primary, #2271b1) !important;
}

.bhi-flow-node:hover ~ .bhi-flow-connector svg line,
.bhi-flow-node:hover ~ .bhi-flow-connector svg path {
    stroke: var(--bhi-flow-secondary, #50575e);
}

.bhi-flow-node:hover ~ .bhi-flow-connector svg polygon {
    fill: var(--bhi-flow-secondary, #50575e);
}

/* Fallback for browsers that don't support CSS variables in SVG */
@supports not (stroke: var(--bhi-flow-primary)) {
    .bhi-flow-connector svg line,
    .bhi-flow-connector svg path {
        stroke: #2271b1;
    }
    .bhi-flow-connector svg polygon {
        fill: #2271b1;
    }
}

.bhi-flow-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 120px;
    max-width: 200px;
    width: auto;
    padding: 12px 16px;
    background: var(--bhi-flow-background);
    border: 2px solid var(--bhi-flow-primary);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--bhi-flow-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    flex-shrink: 0;
    color: var(--bhi-flow-text);
    font-size: 13px;
    line-height: 1.4;
}

/* Nodes in flexible flow can wrap naturally */
.bhi-flow-flexible .bhi-flow-node {
    flex: 0 1 auto;
}

.bhi-flow-node:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--bhi-flow-shadow-hover);
    border-color: var(--bhi-flow-secondary);
}

.bhi-flow-node-icon {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--bhi-flow-primary);
    transition: color 0.2s ease;
}

.bhi-flow-node:hover .bhi-flow-node-icon {
    color: var(--bhi-flow-secondary);
}

.bhi-flow-node-icon .dashicons,
.bhi-flow-node-icon .dashicon {
    font-size: 32px;
    width: 32px;
    height: 32px;
}

.bhi-flow-node-content {
    text-align: center;
    width: 100%;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    overflow: hidden;
}

.bhi-flow-node-content.bhi-flow-node-collapsed {
    display: none;
}

.bhi-flow-node-header {
    margin-bottom: 8px;
}

.bhi-flow-node-header:hover {
    opacity: 0.8;
}

.bhi-flow-node-post {
    margin-bottom: 8px;
}

.bhi-flow-node-post img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.bhi-flow-node-label {
    font-weight: 600;
    font-size: 14px;
    color: var(--bhi-flow-text);
    margin-top: 8px;
    line-height: 1.4;
}

.bhi-flow-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Horizontal connectors (right/left) - inline */
.bhi-flow-connector-right,
.bhi-flow-connector-left {
    margin: 0 10px;
    align-self: center;
}

/* Vertical connectors (up/down) - cause line break */
.bhi-flow-connector-down,
.bhi-flow-connector-up {
    width: 100%;
    margin: 10px 0;
    justify-content: center;
    flex-basis: 100%;
    min-width: 100%;
}

/* When connector is down/up, ensure proper wrapping */
.bhi-flow-flexible .bhi-flow-connector-down,
.bhi-flow-flexible .bhi-flow-connector-up {
    flex-basis: 100%;
    width: 100%;
}

/* Backward compatibility */
.bhi-flow-diagram-container.bhi-flow-horizontal .bhi-flow-connector {
    margin: 0 20px;
}

.bhi-flow-diagram-container.bhi-flow-vertical .bhi-flow-connector {
    margin: 20px 0;
    width: 100%;
    flex-basis: 100%;
}

/* Migration flow styles */
.bhi-flow-migration {
    position: relative;
}

.bhi-flow-migration svg {
    position: relative;
    z-index: 1;
}

.bhi-flow-migration svg text {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Migration flow: support multiple branches */
.bhi-flow-diagram-container.migration-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: flex-start;
    position: relative;
}

.bhi-flow-diagram-container.migration-flow .bhi-flow-node {
    position: relative;
    margin: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .bhi-flow-diagram-container.bhi-flow-horizontal {
        flex-direction: column;
    }
    
    .bhi-flow-diagram-container.bhi-flow-horizontal .bhi-flow-connector {
        margin: 20px 0;
        transform: rotate(90deg);
    }
    
    .bhi-flow-node {
        max-width: 100%;
        width: 100%;
    }
}