/**
 * TreeView Hierarchy Component - 100% INDEPENDENT
 * ================================================
 * Area 1: Hierarchical Tree View (Site → Plant → System → Machine → Point)
 * All styles scoped to .treeview-hierarchy-root
 * 
 * Component Purpose: Interactive hierarchical tree navigation
 * Created: 2024-12-26
 * Version: 1.0
 */

/* COMPONENT ISOLATION CONTAINER */
.treeview-hierarchy-root {
    /* CSS Container Isolation */
    isolation: isolate;
    contain: layout style;
    
    /* Base styles */
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #374151;
    box-sizing: border-box;
    
    /* Layout */
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background: #FFFFFF;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Ensure all child elements use component scoping */
.treeview-hierarchy-root *,
.treeview-hierarchy-root *::before,
.treeview-hierarchy-root *::after {
    box-sizing: border-box;
}

/* Component Variables */
.treeview-hierarchy-root {
    /* Colors */
    --hierarchy-primary: #2563EB;
    --hierarchy-primary-dark: #1D4ED8;
    --hierarchy-gray-50: #F9FAFB;
    --hierarchy-gray-100: #F3F4F6;
    --hierarchy-gray-200: #E5E7EB;
    --hierarchy-gray-300: #D1D5DB;
    --hierarchy-gray-500: #6B7280;
    --hierarchy-gray-600: #4B5563;
    --hierarchy-gray-700: #374151;
    --hierarchy-gray-800: #1F2937;
    --hierarchy-white: #FFFFFF;
    
    /* Spacing */
    --hierarchy-spacing-xs: 0.25rem;
    --hierarchy-spacing-sm: 0.5rem;
    --hierarchy-spacing-md: 0.75rem;
    --hierarchy-spacing-lg: 1rem;
    --hierarchy-spacing-xl: 1.5rem;
    
    /* Transitions */
    --hierarchy-transition-fast: 0.15s ease-in-out;
}

/* ============================================
   HEADER
   ============================================ */

.treeview-hierarchy-root .hierarchy-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--hierarchy-spacing-lg);
    background: linear-gradient(135deg, var(--hierarchy-gray-50) 0%, var(--hierarchy-gray-100) 100%);
    border-bottom: 1px solid var(--hierarchy-gray-200);
    flex-shrink: 0;
}

.treeview-hierarchy-root .hierarchy-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--hierarchy-gray-800);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--hierarchy-spacing-sm);
}

.treeview-hierarchy-root .hierarchy-title i {
    color: var(--hierarchy-primary);
    font-size: 1.1rem;
}

.treeview-hierarchy-root .hierarchy-actions {
    display: flex;
    gap: var(--hierarchy-spacing-sm);
}

.treeview-hierarchy-root .hierarchy-btn {
    padding: var(--hierarchy-spacing-xs) var(--hierarchy-spacing-sm);
    background: var(--hierarchy-white);
    border: 1px solid var(--hierarchy-gray-300);
    border-radius: 4px;
    color: var(--hierarchy-gray-600);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--hierarchy-transition-fast);
    display: flex;
    align-items: center;
    gap: var(--hierarchy-spacing-xs);
}

.treeview-hierarchy-root .hierarchy-btn:hover {
    background: var(--hierarchy-primary);
    color: var(--hierarchy-white);
    border-color: var(--hierarchy-primary);
}

.treeview-hierarchy-root .hierarchy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   SEARCH FIELD
   ============================================ */

.treeview-hierarchy-root .hierarchy-search {
    flex: 1;
    max-width: 400px;
    position: relative;
    margin: 0 var(--hierarchy-spacing-lg);
}

.treeview-hierarchy-root .hierarchy-search-input {
    width: 100%;
    padding: var(--hierarchy-spacing-sm) var(--hierarchy-spacing-lg);
    padding-right: 2.5rem; /* Space for search icon */
    border: 1px solid var(--hierarchy-gray-300);
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--hierarchy-gray-700);
    background: var(--hierarchy-white);
    transition: all var(--hierarchy-transition-fast);
}

.treeview-hierarchy-root .hierarchy-search-input:focus {
    outline: none;
    border-color: var(--hierarchy-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.treeview-hierarchy-root .hierarchy-search-input::placeholder {
    color: var(--hierarchy-gray-500);
}

.treeview-hierarchy-root .hierarchy-search-icon {
    position: absolute;
    right: var(--hierarchy-spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--hierarchy-gray-500);
    pointer-events: none;
    font-size: 0.875rem;
}

/* Search Results Dropdown */
.treeview-hierarchy-root .hierarchy-search-results {
    position: absolute;
    top: calc(100% + var(--hierarchy-spacing-xs));
    left: 0;
    right: 0;
    background: var(--hierarchy-white);
    border: 1px solid var(--hierarchy-gray-300);
    border-radius: 6px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
}

.treeview-hierarchy-root .hierarchy-search-results::-webkit-scrollbar {
    width: 6px;
}

.treeview-hierarchy-root .hierarchy-search-results::-webkit-scrollbar-track {
    background: var(--hierarchy-gray-100);
}

.treeview-hierarchy-root .hierarchy-search-results::-webkit-scrollbar-thumb {
    background: var(--hierarchy-gray-300);
    border-radius: 3px;
}

.treeview-hierarchy-root .hierarchy-search-result-item {
    padding: var(--hierarchy-spacing-md);
    cursor: pointer;
    border-bottom: 1px solid var(--hierarchy-gray-100);
    transition: background var(--hierarchy-transition-fast);
}

.treeview-hierarchy-root .hierarchy-search-result-item:last-child {
    border-bottom: none;
}

.treeview-hierarchy-root .hierarchy-search-result-item:hover {
    background: var(--hierarchy-gray-50);
}

.treeview-hierarchy-root .hierarchy-search-result-name {
    display: flex;
    align-items: center;
    gap: var(--hierarchy-spacing-sm);
    font-weight: 500;
    color: var(--hierarchy-gray-800);
    margin-bottom: var(--hierarchy-spacing-xs);
}

.treeview-hierarchy-root .hierarchy-search-result-name i {
    font-size: 0.875rem;
    flex-shrink: 0;
}

.treeview-hierarchy-root .hierarchy-search-type-badge {
    display: inline-block;
    padding: 2px 6px;
    margin-left: var(--hierarchy-spacing-sm);
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 3px;
    background: var(--hierarchy-gray-200);
    color: var(--hierarchy-gray-600);
}

.treeview-hierarchy-root .hierarchy-search-result-path {
    font-size: 0.75rem;
    color: var(--hierarchy-gray-500);
    margin-left: calc(var(--hierarchy-spacing-sm) + 0.875rem); /* Align with name text */
}

.treeview-hierarchy-root .hierarchy-search-highlight {
    background: rgba(37, 99, 235, 0.2);
    color: var(--hierarchy-primary);
    font-weight: 600;
    padding: 0 2px;
    border-radius: 2px;
}

.treeview-hierarchy-root .hierarchy-search-no-results {
    padding: var(--hierarchy-spacing-lg);
    text-align: center;
    color: var(--hierarchy-gray-500);
    font-size: 0.875rem;
}

/* ============================================
   TREE CONTAINER
   ============================================ */

.treeview-hierarchy-root .hierarchy-tree-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--hierarchy-spacing-md);
    min-height: 0; /* Critical for flex scroll */
}

.treeview-hierarchy-root .hierarchy-tree-container::-webkit-scrollbar {
    width: 6px;
}

.treeview-hierarchy-root .hierarchy-tree-container::-webkit-scrollbar-track {
    background: var(--hierarchy-gray-100);
}

.treeview-hierarchy-root .hierarchy-tree-container::-webkit-scrollbar-thumb {
    background: var(--hierarchy-gray-300);
    border-radius: 3px;
}

.treeview-hierarchy-root .hierarchy-tree-container::-webkit-scrollbar-thumb:hover {
    background: var(--hierarchy-gray-500);
}

/* ============================================
   TREE NODES
   ============================================ */

.treeview-hierarchy-root .hierarchy-tree-node {
    margin-bottom: var(--hierarchy-spacing-xs);
}

.treeview-hierarchy-root .hierarchy-tree-item {
    display: flex;
    align-items: center;
    padding: var(--hierarchy-spacing-sm) var(--hierarchy-spacing-md);
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--hierarchy-transition-fast);
    user-select: none;
    position: relative;
}

.treeview-hierarchy-root .hierarchy-tree-item:hover {
    background: var(--hierarchy-gray-50);
}

.treeview-hierarchy-root .hierarchy-tree-item.selected {
    background: var(--hierarchy-primary);
    color: var(--hierarchy-white);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.treeview-hierarchy-root .hierarchy-tree-item.selected .hierarchy-tree-icon {
    color: var(--hierarchy-white);
}

.treeview-hierarchy-root .hierarchy-tree-item.selected .hierarchy-tree-label {
    color: var(--hierarchy-white);
}

/* Highlighted state (when navigating via search) */
.treeview-hierarchy-root .hierarchy-tree-item.highlighted {
    background: rgba(37, 99, 235, 0.15) !important;
    animation: highlightPulse 2s ease-in-out !important;
    border: 2px solid var(--hierarchy-primary) !important;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1) !important;
}

/* Ensure highlighted state works on all levels */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="site"].highlighted,
.treeview-hierarchy-root .hierarchy-tree-item[data-level="plant"].highlighted,
.treeview-hierarchy-root .hierarchy-tree-item[data-level="system"].highlighted,
.treeview-hierarchy-root .hierarchy-tree-item[data-level="machine"].highlighted,
.treeview-hierarchy-root .hierarchy-tree-item[data-level="point"].highlighted {
    background: rgba(37, 99, 235, 0.15) !important;
    animation: highlightPulse 2s ease-in-out !important;
    border: 2px solid var(--hierarchy-primary) !important;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1) !important;
}

@keyframes highlightPulse {
    0%, 100% {
        background: rgba(37, 99, 235, 0.15);
    }
    50% {
        background: rgba(37, 99, 235, 0.25);
    }
}

/* ============================================
   TREE ITEM ELEMENTS
   ============================================ */

.treeview-hierarchy-root .hierarchy-tree-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin-right: var(--hierarchy-spacing-xs);
    cursor: pointer;
    transition: transform var(--hierarchy-transition-fast);
    flex-shrink: 0;
}

.treeview-hierarchy-root .hierarchy-tree-toggle.expanded {
    transform: rotate(90deg);
}

.treeview-hierarchy-root .hierarchy-tree-toggle i {
    font-size: 0.875rem;
}

.treeview-hierarchy-root .hierarchy-tree-icon {
    margin-right: var(--hierarchy-spacing-sm);
    color: var(--hierarchy-gray-500);
    font-size: 1rem;
    flex-shrink: 0;
}

.treeview-hierarchy-root .hierarchy-tree-label {
    flex: 1;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--hierarchy-gray-700);
}

.treeview-hierarchy-root .hierarchy-tree-children {
    margin-left: var(--hierarchy-spacing-xl);
    display: none;
}

.treeview-hierarchy-root .hierarchy-tree-children.expanded {
    display: block;
}

/* ============================================
   LEVEL-SPECIFIC STYLING
   ============================================ */

/* Site level */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="site"] {
    font-weight: 600;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="site"] .hierarchy-tree-icon {
    color: #9333EA;
}

/* Plant level */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="plant"] {
    font-weight: 600;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="plant"] .hierarchy-tree-icon {
    color: #2563EB;
}

/* System level */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="system"] {
    font-weight: 500;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="system"] .hierarchy-tree-icon {
    color: #0891B2;
}

/* Machine level */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="machine"] {
    font-weight: 500;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="machine"] .hierarchy-tree-icon {
    color: #16A34A;
}

/* Source level - NEW */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="source"] {
    font-weight: 450;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="source"] .hierarchy-tree-icon {
    color: #0891B2;  /* Teal/Cyan - Default */
}

/* Vibration sources (Skf Analyst, Skf Enlight) */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="source"] .hierarchy-tree-icon.bi-activity {
    color: #7C3AED;  /* Purple for vibration analysis */
}

/* Skf Enlight - Specific color override */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="source"][data-source-name*="skf enlight"] .hierarchy-tree-icon.bi-activity {
    color: #14b8a6;  /* Teal for Skf Enlight */
}

/* Oil analysis sources (Mobil, Cat) */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="source"] .hierarchy-tree-icon.bi-droplet-fill {
    color: #78350f;  /* Dark brown for oil analysis */
}

/* Point level */
.treeview-hierarchy-root .hierarchy-tree-item[data-level="point"] {
    font-weight: 400;
}

.treeview-hierarchy-root .hierarchy-tree-item[data-level="point"] .hierarchy-tree-icon {
    color: #EA580C;
}

/* ============================================
   STATUS INDICATORS
   ============================================ */

.treeview-hierarchy-root .hierarchy-status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    flex-shrink: 0;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8);
}

.treeview-hierarchy-root .hierarchy-status-dot.status-ok {
    background-color: #10B981; /* Green */
}

.treeview-hierarchy-root .hierarchy-status-dot.status-warning {
    background-color: #F59E0B; /* Amber/Yellow */
    animation: pulse-warning 2s ease-in-out infinite;
}

.treeview-hierarchy-root .hierarchy-status-dot.status-danger {
    background-color: #EF4444; /* Red */
    animation: pulse-danger 2s ease-in-out infinite;
}

/* Pulse animation for Warning */
@keyframes pulse-warning {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8);
    }
    50% {
        opacity: 0.6;
        box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8), 0 0 8px 2px rgba(245, 158, 11, 0.4);
    }
}

/* Pulse animation for Danger */
@keyframes pulse-danger {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8);
    }
    50% {
        opacity: 0.6;
        box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8), 0 0 8px 2px rgba(239, 68, 68, 0.4);
    }
}

/* ============================================
   EMPTY STATE
   ============================================ */

/* ============================================
   LOADING STATE
   ============================================ */

.treeview-hierarchy-root .hierarchy-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--hierarchy-spacing-xl);
    text-align: center;
    min-height: 200px;
}

.treeview-hierarchy-root .hierarchy-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--hierarchy-gray-200);
    border-top: 3px solid var(--hierarchy-primary);
    border-radius: 50%;
    animation: hierarchy-spin 1s linear infinite;
    margin-bottom: var(--hierarchy-spacing-md);
}

@keyframes hierarchy-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.treeview-hierarchy-root .hierarchy-loading-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--hierarchy-gray-700);
    margin-bottom: var(--hierarchy-spacing-xs);
}

.treeview-hierarchy-root .hierarchy-loading-subtext {
    font-size: 0.75rem;
    color: var(--hierarchy-gray-500);
}

/* ============================================
   EMPTY STATE
   ============================================ */

.treeview-hierarchy-root .hierarchy-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--hierarchy-spacing-xl);
    text-align: center;
    color: var(--hierarchy-gray-500);
}

.treeview-hierarchy-root .hierarchy-empty i {
    font-size: 3rem;
    color: var(--hierarchy-gray-300);
    margin-bottom: var(--hierarchy-spacing-md);
}

.treeview-hierarchy-root .hierarchy-empty-text {
    font-size: 0.875rem;
    color: var(--hierarchy-gray-600);
}

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

@media (max-width: 768px) {
    .treeview-hierarchy-root .hierarchy-header {
        padding: var(--hierarchy-spacing-md);
    }
    
    .treeview-hierarchy-root .hierarchy-title {
        font-size: 0.9rem;
    }
    
    .treeview-hierarchy-root .hierarchy-btn {
        padding: var(--hierarchy-spacing-xs);
    }
    
    .treeview-hierarchy-root .hierarchy-tree-item {
        padding: var(--hierarchy-spacing-xs) var(--hierarchy-spacing-sm);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.treeview-hierarchy-root .hierarchy-tree-item:focus-visible {
    outline: 2px solid var(--hierarchy-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .treeview-hierarchy-root * {
        transition: none !important;
        animation: none !important;
    }
}