/*
 * Copyright (c) 2026 Sohrab Modi. All rights reserved.
 * No parts of this code can be copied or reused in other environments
 * without the explicit written permission of Sohrab Modi (smodi@i20.io).
 */

/* ============================================================
   KNOWLEDGE GRAPH PANEL STYLES
   ============================================================ */

/* ---------- KG Layout ---------- */
.kg-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.kg-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 20px;
    height: calc(100vh - var(--topbar-height) - 180px);
    min-height: 500px;
}

/* ---------- Visualization Container ---------- */
.kg-viz-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.kg-viz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.kg-viz-header h3 {
    font-size: 0.9375rem;
    font-weight: 600;
}

/* View switcher dropdown */
.kg-view-select {
    font-weight: 600;
    font-size: 0.9375rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}
.kg-view-select:hover {
    background: var(--bg-card-hover);
}
.kg-view-select:focus {
    outline: 1px solid var(--primary-400);
    outline-offset: 1px;
}

/* Status view inside the canvas */
.kg-status-view {
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    height: 100%;
    align-content: start;
    overflow-y: auto;
}

.kg-status-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
}

.kg-status-card .status-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kg-status-card .status-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

.kg-status-section {
    grid-column: 1 / -1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.kg-status-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.kg-type-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
}

.kg-type-bar-label {
    min-width: 120px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.kg-type-bar-track {
    flex: 1;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
}

.kg-type-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

.kg-type-bar-count {
    min-width: 40px;
    text-align: right;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.kg-viz-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.kg-canvas {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 400px;
    background:
        radial-gradient(circle at 50% 50%, rgba(99,102,241,0.03) 0%, transparent 70%),
        var(--bg-input);
}

/* vis.js network container fills the canvas */
#kg-vis-container {
    width: 100%;
    height: 100%;
}

/* Hide vis.js built-in tooltip (we use our own custom tooltip instead) */
div.vis-tooltip {
    display: none !important;
}

/* vis.js navigation buttons (dark theme) */
div.vis-navigation div.vis-button {
    background-color: rgba(99,102,241,0.15) !important;
    border: 1px solid rgba(99,102,241,0.3) !important;
    border-radius: 6px !important;
}
div.vis-navigation div.vis-button:hover {
    background-color: rgba(99,102,241,0.3) !important;
    box-shadow: 0 0 8px rgba(99,102,241,0.3) !important;
}

/* Custom scrollbar styling */
.kg-canvas::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
.kg-canvas::-webkit-scrollbar-track {
    background: var(--bg-input);
    border-radius: 5px;
}
.kg-canvas::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 5px;
    border: 2px solid var(--bg-input);
}
.kg-canvas::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}
.kg-canvas::-webkit-scrollbar-corner {
    background: var(--bg-input);
}

.kg-canvas.fullscreen {
    position: fixed;
    inset: 0;
    z-index: 300;
    border-radius: 0;
}

.kg-canvas svg.kg-graph {
    display: block;
    cursor: grab;
}

.kg-canvas svg.kg-graph:active {
    cursor: grabbing;
}

/* Loading overlay while computing layout */
.kg-loading-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(15, 17, 26, 0.75);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

/* Placeholder when no graph */
.kg-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.kg-placeholder-icon {
    width: 120px;
    height: 120px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ---------- Graph Node & Edge Styles ---------- */
.kg-node {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.kg-node circle {
    stroke-width: 1.5;
    transition: all var(--transition-fast);
}

.kg-node:hover circle {
    stroke-width: 2.5;
    filter: brightness(1.3) drop-shadow(0 0 4px currentColor);
    r: 9;
}

.kg-node text {
    fill: var(--text-primary);
    font-size: 7px;
    font-weight: 500;
    pointer-events: none;
    text-anchor: middle;
    dominant-baseline: middle;
}

.kg-edge {
    stroke: var(--border-light);
    stroke-width: 1;
    fill: none;
    opacity: 0.5;
    transition: all var(--transition-fast);
}

.kg-edge.highlighted {
    stroke: var(--primary-400);
    stroke-width: 2;
    opacity: 1;
}

.kg-edge-label {
    fill: var(--text-muted);
    font-size: 8px;
    pointer-events: none;
}

/* Node entity type colors */
.node-person   circle { fill: #6366f1; stroke: #818cf8; }
.node-org      circle { fill: #3b82f6; stroke: #60a5fa; }
.node-location circle { fill: #10b981; stroke: #34d399; }
.node-concept  circle { fill: #8b5cf6; stroke: #a78bfa; }
.node-event    circle { fill: #f59e0b; stroke: #fbbf24; }
.node-document circle { fill: #ec4899; stroke: #f472b6; }
.node-product  circle { fill: #ef4444; stroke: #f87171; }
.node-default  circle { fill: #64748b; stroke: #94a3b8; }

/* Selected node */
.kg-node.selected circle {
    stroke-width: 3;
    filter: drop-shadow(0 0 10px currentColor);
}

/* Community clusters */
.kg-community-hull {
    fill: var(--primary-500);
    opacity: 0.04;
    stroke: var(--primary-400);
    stroke-width: 1;
    stroke-dasharray: 4 2;
    pointer-events: none;
}

/* ---------- Details Panel ---------- */
.kg-details-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.kg-stats, .kg-evaluation, .kg-entity-detail, .kg-search {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
}

.kg-stats h3, .kg-evaluation h3, .kg-entity-detail h3, .kg-search h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
}

/* Stats grid */
.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
}

.stat-label {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* KG Model Info / Mismatch Warning */
.kg-model-info {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-secondary);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.kg-model-info svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--primary-400);
}

.kg-model-info.kg-model-mismatch {
    background: rgba(245, 158, 11, 0.10);
    border-color: rgba(245, 158, 11, 0.4);
    color: var(--text-primary);
}

.kg-model-info.kg-model-mismatch svg {
    color: var(--warning);
}

/* MINE Evaluation Metrics */
.metric-bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.metric-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
}

.metric-name {
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-score {
    color: var(--text-primary);
    font-weight: 600;
}

.metric-bar {
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.metric-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.8s ease;
}

.metric-fill.excellent { background: var(--success); }
.metric-fill.good      { background: #22d3ee; }
.metric-fill.fair      { background: var(--warning); }
.metric-fill.poor      { background: var(--danger); }

/* Entity detail */
.entity-prop {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.8125rem;
    border-bottom: 1px solid var(--border);
}

.entity-prop:last-child {
    border-bottom: none;
}

.entity-prop-key {
    color: var(--text-muted);
}

.entity-prop-value {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
}

.entity-relationships {
    margin-top: 12px;
}

.entity-relationships h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.entity-rel-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.entity-rel-arrow {
    color: var(--primary-400);
}

/* KG Search */
.kg-search-results {
    margin-top: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.kg-search-result {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8125rem;
    transition: background var(--transition-fast);
}

.kg-search-result:hover {
    background: var(--bg-card-hover);
}

.kg-search-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.kg-search-dot.person   { background: #6366f1; }
.kg-search-dot.org      { background: #3b82f6; }
.kg-search-dot.location { background: #10b981; }
.kg-search-dot.concept  { background: #8b5cf6; }
.kg-search-dot.event    { background: #f59e0b; }
.kg-search-dot.document { background: #ec4899; }
.kg-search-dot.product  { background: #ef4444; }
.kg-search-dot.default  { background: #64748b; }

/* ---------- Hover Tooltip ---------- */
.kg-tooltip {
    position: fixed;
    z-index: 1000;
    pointer-events: none;
    max-width: 340px;
    padding: 10px 14px;
    background: rgba(15, 17, 30, 0.95);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.kg-tooltip.visible {
    opacity: 1;
}

.kg-tooltip-title {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kg-tooltip-title .tooltip-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.kg-tooltip-type {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.kg-tooltip-desc {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.kg-tooltip-connections {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.kg-tooltip-edge-label {
    font-weight: 600;
    color: var(--primary-400);
}

/* Edge hover — thicker hit area */
.kg-edge-hover {
    stroke: transparent;
    stroke-width: 12;
    fill: none;
    cursor: pointer;
}

.kg-edge-hover:hover + .kg-edge,
.kg-edge.edge-hovered {
    stroke: var(--primary-400) !important;
    stroke-width: 2 !important;
    opacity: 1 !important;
}

/* ---------- Legend ---------- */
.kg-legend {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 8px 12px;
    background: rgba(19, 23, 38, 0.9);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    z-index: 10;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .kg-layout {
        grid-template-columns: 1fr;
        height: auto;
    }

    .kg-viz-container {
        min-height: 400px;
    }
}