/* Sankey Diagram Visualization Styles */

.sankey-diagram-page {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--color-surface-primary);
    /* No padding-bottom: this is a flex-fill page (the diagram/config fills the
       flex:1 container), and `.app-main` already reserves the fixed footer's
       height. Any padding here would leave a blank strip above the footer. */
    padding-bottom: 0;
}

/* Search container for document mode */
.sankey-search-container {
    padding: 1rem 1.5rem;
    background: var(--color-sand-footer);
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sankey-search-container .search-label {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    white-space: nowrap;
}

.sankey-search-container .document-search-box {
    flex: 1;
    max-width: 500px;
}

/* Diagram container */
.sankey-diagram-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.sankey-canvas-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
}

.sankey-canvas-wrapper svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* Sankey-specific styles */
.sankey-node {
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.sankey-node:hover {
    opacity: 0.8;
}

.sankey-link {
    cursor: pointer;
    transition: stroke-opacity 0.2s ease;
}

.sankey-label {
    pointer-events: none;
    user-select: none;
}

/* Pooled "أخرى" bands: muted, dashed, informational only (not clickable) */
.sankey-node-other {
    cursor: default;
    opacity: 0.65;
}

.sankey-node-other:hover {
    opacity: 0.8;
}

.sankey-link-other {
    cursor: default;
}

.sankey-label-other {
    opacity: 0.75;
}

/* Loading overlay */
.sankey-loading-overlay {
    position: absolute;
    top: 0;
    inset-inline: 0;
    bottom: 0;
    background: var(--color-surface-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 100;
}

/* Error message */
.sankey-error {
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-danger-bg);
    color: var(--color-danger);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
    z-index: 50;
    font-family: var(--font-primary);
}

/* ============================================================================
   SANKEY DIAGRAM FOOTER (Fixed at Bottom)
   Matches the styling of other footer components
   ============================================================================ */

.sankey-diagram-footer {
    position: fixed;
    bottom: 0;
    inset-inline: 0;
    width: 100%;
    height: var(--footer-height);
    z-index: var(--z-nav);
    background: var(--color-sand-footer);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    border-top: 2px solid var(--color-primary);
}

/* Full-width bar with the controls DISTRIBUTED across it: each section takes
   an equal third and spreads its items evenly, so the buttons span the whole
   footer instead of clumping at the edges of a centered box. */
.sankey-diagram-footer .footer-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    width: 100%;
    height: 100%;
    gap: 1rem;
}

.sankey-diagram-footer .footer-left,
.sankey-diagram-footer .footer-right {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    flex: 1 1 0;
    min-width: 0;
    gap: 0.75rem;
}

.sankey-diagram-footer .footer-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
    min-width: 0;
    gap: 0.15rem;
}

/* Flow coverage line ("يعرض X من أصل Y ...") under the stats */
.sankey-diagram-footer .sankey-coverage {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    white-space: nowrap;
}

/* Control groups (dropdowns with labels) */
.sankey-diagram-footer .control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sankey-diagram-footer .control-group label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    white-space: nowrap;
}

.sankey-diagram-footer .control-group select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    cursor: pointer;
    min-width: 100px;
}

.sankey-diagram-footer .control-group select:hover {
    border-color: var(--color-primary-dark);
}

/* Footer buttons */
.sankey-diagram-footer .footer-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    font-family: var(--font-primary);
    transition: var(--transition-bg);
}

.sankey-diagram-footer .footer-button:hover {
    background: var(--color-primary-dark);
}

.sankey-diagram-footer .footer-button.has-filters {
    background: var(--color-primary-dark);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.sankey-diagram-footer .filter-badge {
    background: var(--color-white);
    color: var(--color-primary);
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    min-width: 1.25rem;
    text-align: center;
    font-weight: var(--font-weight-bold);
}

/* Stats display */
.sankey-diagram-footer .sankey-stats {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-primary);
}

.sankey-diagram-footer .stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.sankey-diagram-footer .stat-value {
    font-size: 1rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.sankey-diagram-footer .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.sankey-diagram-footer .stat-separator {
    color: var(--color-gray-medium);
    font-size: 0.85rem;
}

/* ============================================================================
   SANKEY SETTINGS MODAL
   ============================================================================ */

.sankey-settings-modal {
    width: 450px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
}

.sankey-settings-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-gray-light);
}

.sankey-settings-modal .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
}

.sankey-settings-modal .close-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 0.25rem;
    line-height: 1;
}

.sankey-settings-modal .close-button:hover {
    color: var(--color-text-primary);
}

.sankey-settings-modal .modal-body {
    padding: 1.5rem;
}

.sankey-settings-modal .settings-section {
    margin-bottom: 1.5rem;
}

.sankey-settings-modal .settings-section:last-child {
    margin-bottom: 0;
}

.sankey-settings-modal .settings-section h4 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-gray-light);
    padding-bottom: 0.5rem;
}

.sankey-settings-modal .setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.sankey-settings-modal .setting-row:last-child {
    margin-bottom: 0;
}

.sankey-settings-modal .setting-row label {
    font-size: 0.875rem;
    font-family: var(--font-primary);
    color: var(--color-text-secondary);
}

.sankey-settings-modal .setting-row select,
.sankey-settings-modal .setting-row input[type="number"] {
    padding: 0.5rem;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-primary);
    min-width: 120px;
}

.sankey-settings-modal .setting-row input[type="range"] {
    flex: 1;
    margin-inline-end: 1rem;
    max-width: 150px;
}

.sankey-settings-modal .checkbox-row {
    justify-content: flex-start;
}

.sankey-settings-modal .checkbox-row label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.sankey-settings-modal .checkbox-row input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.sankey-settings-modal .modal-footer {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-gray-light);
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    .sankey-diagram-footer {
        height: auto;
        padding: 0.5rem 0;
    }

    .sankey-diagram-footer .footer-controls {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.75rem 1rem;
    }

    .sankey-diagram-footer .footer-left,
    .sankey-diagram-footer .footer-center,
    .sankey-diagram-footer .footer-right {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .sankey-diagram-footer .control-group {
        flex: 1;
        min-width: 120px;
    }

    .sankey-diagram-footer .control-group select {
        flex: 1;
    }

    .sankey-search-container {
        flex-direction: column;
        align-items: stretch;
    }

    .sankey-search-container .document-search-box {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .sankey-diagram-footer .footer-button {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }

    .sankey-diagram-footer .control-group label {
        font-size: 0.8rem;
    }

    .sankey-diagram-footer .control-group select {
        font-size: 0.85rem;
        min-width: 80px;
    }

    .sankey-diagram-footer .stat-value {
        font-size: 0.9rem;
    }

    .sankey-diagram-footer .stat-label {
        font-size: 0.75rem;
    }
}