/* Visualizer Page Styles */

/* CSS variable for header height */
:root {
    --header-height: 73px;
    --card-gap: 24px;
    --node-size: 90px;
    --node-size-root: 110px;
    --node-size-mobile: 60px;
    --node-size-root-mobile: 80px;
    --connector-color: var(--border);
    --connector-width: 2px;
}

/* Allow scrolling on visualizer page, content flows under header */
html:has(.visualizer-container) .app-container {
    display: block;
}

/* Remove padding from main-content on visualizer page */
html:has(.visualizer-container) .main-content {
    padding: 0;
    max-width: none;
}

.visualizer-container {
    min-height: calc(100vh - var(--header-height));
    width: 100%;
    padding: var(--spacing-lg);
}

/* Family Grid - Masonry layout */
.family-grid {
    position: relative;
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    transition: opacity 0.3s ease;
    height: var(--runtime-family-height, auto);
}

/* Hidden while images are still loading */
.family-grid--loading {
    opacity: 0;
    pointer-events: none;
    position: absolute;
    visibility: hidden;
}

/* Family Card - Each root image and its descendants */
.family-card {
    position: absolute;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;
    width: var(--runtime-family-width, auto);
    transform: translate(var(--runtime-family-x, 0), var(--runtime-family-y, 0));
}

.family-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* Card Header */
.family-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: var(--spacing-md);
}

.family-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.family-child-count {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--surface-elevated);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.tree-icon {
    width: 12px;
    height: 12px;
    filter: brightness(0) saturate(100%) invert(56%) sepia(15%) saturate(800%) hue-rotate(80deg) brightness(95%);
}

/* Tree Container */
.tree-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Tree Node Styles */
.tree-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.tree-node:hover {
    transform: scale(1.03);
    z-index: 10;
}

.node-image {
    width: var(--node-size);
    height: var(--node-size);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 3px solid var(--border);
    background: var(--surface-elevated);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.tree-node:hover .node-image {
    border-color: var(--primary);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.tree-node.root-node .node-image {
    width: var(--node-size-root);
    height: var(--node-size-root);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.node-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: repeating-conic-gradient(
        rgba(128, 128, 128, 0.15) 0% 25%,
        transparent 0% 50%
    ) 50% / 12px 12px;
}

.node-label {
    margin-top: var(--spacing-xs);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    max-width: var(--node-size);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-node.root-node .node-label {
    max-width: var(--node-size-root);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Children Container with Tree Lines */
.tree-children {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    position: relative;
}

.connector-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: visible;
    pointer-events: none;
}

.preview-panel.preview-panel-positioned {
    top: var(--runtime-preview-top);
    right: auto;
    bottom: auto;
    left: var(--runtime-preview-left);
    transform: none;
}

/* Tree Branch - contains a node and its children */
.tree-branch {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* Connector Lines */
.tree-branch::before {
    content: '';
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: var(--connector-width);
    height: 16px;
    background: var(--connector-color);
}

/* Horizontal connector bar above children */
.tree-children::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: var(--connector-width);
    height: var(--spacing-lg);
    background: var(--connector-color);
}

/* Horizontal line connecting siblings */
.tree-children[data-child-count]:not([data-child-count="1"])::after {
    content: '';
    position: absolute;
    top: var(--spacing-lg);
    height: var(--connector-width);
    background: var(--connector-color);
}

/* Nested children */
.tree-branch > .tree-children {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.tree-branch > .tree-children::before {
    height: var(--spacing-md);
}

.tree-branch > .tree-children > .tree-branch::before {
    top: -8px;
    height: 8px;
}

/* Generation badge */
.node-gen-badge {
    position: absolute;
    bottom: 24px;
    right: -4px;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    font-size: 0.55rem;
    padding: 2px 5px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Preview Panel */
.preview-panel {
    position: fixed;
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    overflow: hidden;
    max-width: 90vw;
    width: 320px;
}

.preview-panel.hidden {
    display: none;
}

.preview-panel .close-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.preview-panel .close-btn:hover {
    background: rgba(0, 0, 0, 0.7);
}

.preview-image img {
    width: 100%;
    height: auto;
    display: block;
    background: repeating-conic-gradient(
        rgba(128, 128, 128, 0.15) 0% 25%,
        transparent 0% 50%
    ) 50% / 20px 20px;
}

.preview-info {
    padding: var(--spacing-md);
}

.preview-prompt {
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.preview-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.preview-actions {
    margin-top: var(--spacing-md);
}

/* Empty State */
.tree-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    color: var(--text-muted);
    text-align: center;
    padding: var(--spacing-2xl);
}

.tree-empty .empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.tree-empty h3 {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Loading State */
.tree-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: var(--spacing-md);
}

.tree-loading .spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.tree-loading span {
    color: var(--text-muted);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive - Tablet */
@media (max-width: 1200px) {
    /* Masonry handles columns in JS */
}

@media (max-width: 768px) {
    :root {
        --node-size: 70px;
        --node-size-root: 90px;
    }

    .visualizer-container {
        padding: var(--spacing-md);
    }

    .family-card {
        padding: var(--spacing-md);
    }

    .tree-children {
        gap: var(--spacing-sm);
    }

    .preview-panel {
        position: fixed;
        left: var(--spacing-md) !important;
        right: var(--spacing-md) !important;
        bottom: var(--spacing-md) !important;
        top: auto !important;
        transform: none !important;
        width: auto;
        max-width: none;
        max-height: 70vh;
        overflow-y: auto;
    }
}

/* Responsive - Mobile */
@media (max-width: 480px) {
    :root {
        --node-size: var(--node-size-mobile);
        --node-size-root: var(--node-size-root-mobile);
    }

    .visualizer-container {
        padding: var(--spacing-sm);
    }

    .family-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .family-card {
        padding: var(--spacing-sm);
    }

    .family-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .tree-children {
        gap: var(--spacing-xs);
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
    }

    .node-label {
        font-size: 0.6rem;
    }

    .tree-node.root-node .node-label {
        font-size: 0.65rem;
    }
}