/**
 * Decision Tree Classification Visualizer Styles
 *
 * Visualization-specific styles only. Common styles are in visualizations.css.
 * Colors for classes 0-2 use shared --viz-class-* variables.
 */

/* ============================================
   Decision Tree-Specific CSS Custom Properties
   ============================================ */
:root {
    /* Class colors - from shared */
    --dtree-class-0: var(--viz-class-0);
    --dtree-class-1: var(--viz-class-1);
    --dtree-class-2: var(--viz-class-2);

    /* Query point - from shared */
    --dtree-query-bg: var(--viz-query-bg);
    --dtree-query-border: var(--viz-query-border);
    --dtree-query-size: 14px;

    /* Split line styling */
    --dtree-split-line: #333;
    --dtree-split-line-width: 2px;

    /* Decision boundary */
    --dtree-boundary-opacity: 0.25;

    /* Tree node colors */
    --dtree-node-bg: #ffffff;
    --dtree-node-border: #333333;
    --dtree-node-selected: #ffd700;
    --dtree-edge-color: #999999;
}

[data-theme="gruvbox-dark"] {
    /* Split lines - lighter for dark bg */
    --dtree-split-line: #ebdbb2;

    /* Tree node colors */
    --dtree-node-bg: #3c3836;
    --dtree-node-border: #ebdbb2;
    --dtree-node-selected: #fabd2f;
    --dtree-edge-color: #a89984;
}

/* ============================================
   Canvas Styling
   ============================================ */
#dtree-canvas,
#boundary-canvas {
    border: none;
    border-radius: 0;
    display: block;
}

#boundary-canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
}

#dtree-canvas {
    position: relative;
    z-index: 2;
    cursor: crosshair;
}

/* ============================================
   Legend Colors
   ============================================ */
.legend-line.split-line {
    background-color: var(--dtree-split-line);
    height: 2px;
    width: 20px;
    display: inline-block;
    vertical-align: middle;
    border-style: dashed;
}

/* ============================================
   Tree Structure Panel
   ============================================ */
.tree-panel-body {
    padding: 12px;
    text-align: center;
    min-height: 200px;
}

#tree-svg {
    display: block;
    margin: 0 auto;
    min-height: 180px;
}

#tree-svg .tree-node {
    cursor: pointer;
}

#tree-svg .tree-node:hover circle {
    stroke-width: 3;
}

.tree-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding-top: 12px;
    border-top: 1px solid var(--viz-border);
    font-size: 13px;
    color: var(--viz-text-muted);
}

.tree-stats span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tree-stats strong {
    color: var(--viz-text);
    font-weight: 600;
}

/* Tree Mode Controls */
.tree-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.tree-mode-toggle .btn {
    padding: 4px 10px;
    font-size: 12px;
}

.tree-mode-toggle .btn.active {
    background-color: var(--primary-color, #007bff);
    border-color: var(--primary-color, #007bff);
    color: #fff;
}

/* Design Mode Instructions */
.design-instructions {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 4px;
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 12px;
    color: var(--viz-text);
    text-align: left;
}

.design-instructions i {
    color: #ffd700;
    margin-right: 6px;
}

/* ============================================
   Split Dialog
   ============================================ */
.split-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.split-dialog-content {
    background: var(--viz-bg);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    min-width: 320px;
    max-width: 400px;
}

.split-dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--viz-border);
    font-weight: 600;
    font-size: 14px;
}

.split-dialog-header i {
    margin-right: 8px;
    color: var(--viz-text-muted);
}

.split-dialog-body {
    padding: 16px;
}

.split-option-row {
    margin-bottom: 16px;
}

.split-option-row label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
}

.split-option-row .btn-group {
    display: flex;
    gap: 4px;
}

.split-option-row .btn-group .btn {
    flex: 1;
    padding: 6px 12px;
    font-size: 12px;
}

.split-option-row .btn-group .btn.active {
    background-color: var(--primary-color, #007bff);
    border-color: var(--primary-color, #007bff);
    color: #fff;
}

.split-option-row input[type="range"] {
    width: 100%;
    margin-top: 8px;
}

.split-preview {
    background: var(--viz-hover-bg);
    border-radius: 4px;
    padding: 10px 12px;
    text-align: center;
    font-family: var(--viz-mono-font);
    font-size: 14px;
    font-weight: 500;
}

.split-dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--viz-border);
}

.split-dialog-footer .btn {
    padding: 6px 16px;
    font-size: 13px;
}

/* ============================================
   Class Distribution Bars
   ============================================ */
.class-distribution {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--viz-border);
}

.distribution-header {
    font-size: 11px;
    font-weight: 600;
    color: var(--viz-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.distribution-bars {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.distribution-bar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.distribution-label {
    min-width: 28px;
    font-size: 11px;
    font-weight: 600;
}

.distribution-label.class-0 { color: var(--dtree-class-0); }
.distribution-label.class-1 { color: var(--dtree-class-1); }
.distribution-label.class-2 { color: var(--dtree-class-2); }

.distribution-track {
    flex: 1;
    height: 12px;
    background: var(--viz-hover-bg);
    border-radius: 3px;
    overflow: hidden;
}

.distribution-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.distribution-fill.class-0 { background-color: var(--dtree-class-0); }
.distribution-fill.class-1 { background-color: var(--dtree-class-1); }
.distribution-fill.class-2 { background-color: var(--dtree-class-2); }

.distribution-value {
    min-width: 24px;
    font-size: 11px;
    color: var(--viz-text-muted);
    text-align: right;
}

/* ============================================
   Path List
   ============================================ */
.path-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-weight: 600;
}

.path-list {
    max-height: 180px;
    overflow-y: auto;
}

.path-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    margin: 3px 0;
    border-radius: 4px;
    font-size: 12px;
    background: var(--viz-hover-bg);
    border-left: 3px solid var(--viz-border);
}

.path-item.path-leaf {
    border-left-color: var(--dtree-node-selected);
    background: rgba(255, 215, 0, 0.1);
}

.path-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--viz-border);
    font-size: 10px;
    font-weight: 600;
    color: var(--viz-text);
}

.path-desc {
    flex: 1;
    font-family: var(--viz-mono-font);
}

.path-desc i {
    margin-left: 6px;
    color: var(--viz-text-muted);
}

/* ============================================
   Algorithm Steps & Formulas
   ============================================ */
.algorithm-steps {
    padding-left: 20px;
    margin: 12px 0;
}

.algorithm-steps li {
    margin-bottom: 6px;
}

.criteria-list {
    padding-left: 20px;
}

.criteria-list li {
    margin-bottom: 4px;
}

/* ============================================
   Controls Panel - Two Column Layout
   ============================================ */
.dtree-controls-panel {
    display: flex;
    gap: 20px;
}

/* Left column: Dataset & Algorithm Options */
.dtree-options-col {
    flex: 1;
    display: flex;
    gap: 16px;
}

.dtree-option-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dtree-options-col .option-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dtree-options-col .option-row > label:first-child {
    min-width: 55px;
    font-size: 12px;
}

.dtree-options-col .option-row select {
    width: auto;
    min-width: 100px;
    font-size: 12px;
}

.dtree-options-col .checkbox-label {
    font-size: 12px;
}

/* Depth stepper */
.depth-stepper {
    display: flex;
    align-items: center;
    gap: 2px;
}

.depth-stepper .btn {
    padding: 2px 8px;
    font-size: 14px;
    line-height: 1;
}

.depth-input {
    width: 32px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--viz-border);
    border-radius: 3px;
    padding: 2px 4px;
    background: var(--viz-bg);
    color: var(--viz-text);
}

/* Right column: Tree Mode */
.dtree-mode-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    border-left: 1px solid var(--viz-border);
    padding-left: 20px;
}

.tree-action-buttons {
    display: flex;
    gap: 4px;
}

.tree-action-buttons .btn {
    padding: 4px 8px;
}

/* Tree tab header with stats */
.tree-tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--viz-border);
}

.tree-stats-inline {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--viz-text-muted);
}

.tree-stats-inline strong {
    color: var(--viz-text);
    font-weight: 600;
}

/* Tree wrapper with pan/zoom */
.dtree-tree-wrapper {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--viz-border);
    border-radius: 4px;
    background: var(--viz-bg);
    cursor: grab;
    height: 300px;
}

.dtree-tree-wrapper:active {
    cursor: grabbing;
}

.dtree-tree-wrapper svg {
    display: block;
}

.tree-controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 6px;
}

.tree-hint {
    font-size: 10px;
    color: var(--viz-text-muted);
}

.tree-hint i {
    margin-right: 4px;
}

.animation-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.animation-controls .checkbox-label {
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.animation-controls .speed-control {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    color: var(--viz-text-muted);
}

.animation-controls .speed-control input[type="range"] {
    width: 60px;
    height: 4px;
}

/* Animation pulse effect on nodes */
@keyframes node-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.tree-node.animating circle {
    animation: node-pulse 0.4s ease-in-out;
}

/* Animating decision display */
.animating-decision {
    display: inline-block;
    font-family: var(--viz-mono-font);
    font-weight: 600;
    color: var(--dtree-query-border);
    animation: decision-fade 0.3s ease-in-out;
}

@keyframes decision-fade {
    0% { opacity: 0; transform: translateY(-5px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Tab pane styling */
.tab-pane {
    min-height: 350px;
}

/* Panel Tabs - match panel-heading height exactly (39px) */
.panel-heading .nav-tabs.panel-tabs {
    margin: -10px -15px;
    border-bottom: none;
    display: flex;
}

.panel-heading .nav-tabs.panel-tabs > li {
    margin-bottom: 0;
    float: none;
}

.panel-heading .nav-tabs.panel-tabs > li > a {
    padding: 9px 12px;
    border: none;
    border-radius: 0;
    margin: 0;
    font-size: 13px;
    line-height: 1.42857143;
    display: block;
}

.panel-heading .nav-tabs.panel-tabs > li.active > a,
.panel-heading .nav-tabs.panel-tabs > li.active > a:hover,
.panel-heading .nav-tabs.panel-tabs > li.active > a:focus {
    background-color: #fff;
    border: none;
    border-bottom: 2px solid var(--dtree-class-1, #377eb8);
}

.panel-heading .nav-tabs.panel-tabs > li > a:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 992px) {
    .dtree-controls-panel {
        flex-direction: column;
    }

    .dtree-mode-col {
        border-left: none;
        border-top: 1px solid var(--viz-border);
        padding-left: 0;
        padding-top: 15px;
    }

    .split-dialog-content {
        margin: 16px;
        min-width: auto;
        max-width: calc(100% - 32px);
    }
}