/* Subject Hierarchy Taxonomy Explorer
 * ====================================
 * vis-network hierarchical layout with expand/collapse functionality
 */

/* ===========================================
   RESET & BASE STYLES
   =========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: aliceblue;
}

/* ===========================================
   MAIN CONTAINER & NETWORK CANVAS
   =========================================== */
.container {
    position: relative;
    width: 100%;
    height: 100vh;
}

#network {
    width: 100%;
    height: 100%;
    background-color: aliceblue;
}

/* ===========================================
   TITLE (Top Center)
   =========================================== */
.title {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 20px;
    font-weight: bold;
    color: #333;
    background-color: aliceblue;
    padding: 4px 12px;
    border-radius: 4px;
    z-index: 10;
}

/* ===========================================
   LEGEND (Upper Left)
   =========================================== */
.legend {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 8px 12px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 10;
}

.legend-item {
    display: flex;
    align-items: center;
    margin: 4px 0;
    font-size: 12px;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-right: 8px;
    border: 2px solid #333;
}

.color-discipline {
    background-color: lightblue;
    width: 24px;
    height: 24px;
}

.color-domain {
    background-color: #4CAF50;
    width: 20px;
    height: 20px;
}

.color-topic {
    background-color: #FF9800;
    width: 16px;
    height: 16px;
}

/* ===========================================
   RIGHT PANEL
   =========================================== */
.right-panel {
    position: absolute;
    top: 50px;
    right: 10px;
    width: 100px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 10;
}

/* ===========================================
   SEARCH CONTAINER
   =========================================== */
.search-container {
    position: relative;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#search-input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 2px solid #ddd;
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s;
}

#search-input:focus {
    border-color: #2196F3;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 10px;
    right: 10px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    max-height: 200px;
    overflow-y: auto;
    display: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    z-index: 100;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    font-size: 13px;
}

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

.search-result-item:hover {
    background-color: #f5f5f5;
}

.search-result-item .type-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
    margin-left: 8px;
    color: white;
}

.type-badge.discipline { background-color: #2196F3; }
.type-badge.domain { background-color: #4CAF50; }
.type-badge.topic { background-color: #FF9800; }

/* ===========================================
   CONTROL BUTTONS
   =========================================== */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.95);
    padding: 10px 12px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn {
    padding: 8px 14px;
    font-size: 12px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: #2196f3;
    color: white;
}

.btn-primary:hover {
    background-color: #1976d2;
}

.btn-primary.active {
    background-color: #1565c0;
}

.btn-secondary {
    background-color: #757575;
    color: white;
}

.btn-secondary:hover {
    background-color: #616161;
}

/* ===========================================
   BREADCRUMB
   =========================================== */
.breadcrumb {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 10px 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.breadcrumb-title {
    font-weight: bold;
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
}

.breadcrumb-path {
    font-size: 13px;
    color: #333;
    line-height: 1.4;
}

.breadcrumb-path span {
    padding: 2px 6px;
    border-radius: 3px;
    margin-right: 4px;
}

.breadcrumb-path span.discipline { background-color: #BBDEFB; }
.breadcrumb-path span.domain { background-color: #C8E6C9; }
.breadcrumb-path span.topic { background-color: #FFE0B2; }

.breadcrumb-path .separator {
    color: #999;
    margin: 0 2px;
}

/* ===========================================
   NODE INFO PANEL
   =========================================== */
.node-info {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.node-info-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 6px;
    color: #333;
}

.node-info-type {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 8px;
    color: white;
}

.node-info-type.discipline { background-color: #2196F3; }
.node-info-type.domain { background-color: #4CAF50; }
.node-info-type.topic { background-color: #FF9800; }

.node-info-desc {
    font-size: 13px;
    line-height: 1.5;
    color: #555;
    margin-bottom: 8px;
}

.node-info-example {
    font-size: 12px;
    color: #777;
    font-style: italic;
}

/* ===========================================
   STATUS INFO PANEL
   =========================================== */
.status-info {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.status-title {
    font-weight: bold;
    margin-bottom: 6px;
    font-size: 13px;
    color: #333;
}

.status-text {
    font-size: 12px;
    line-height: 1.5;
    color: #666;
}

/* ===========================================
   RESPONSIVE STYLES
   =========================================== */
@media (max-width: 600px) {
    .title {
        font-size: 16px;
    }

    .legend {
        padding: 6px 8px;
    }

    .legend-item {
        font-size: 10px;
    }

    .right-panel {
        width: 100px;
    }

    .controls {
        padding: 8px;
    }

    .btn {
        padding: 6px 10px;
        font-size: 11px;
    }
}