:root{
    --secondary-color: #fcee0a;
    --text-color: #333;
    --bg:#4dd9ca;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color:var( --text-color);
}
.concept-label {
    font-size: 14px;
    color: #555;
    margin-bottom: 5px;
    font-weight: 500;
}

#container {
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

svg {
    width: 100%;
    height: 100%;
}

.node {
    cursor: pointer;
}

.link {
    stroke-opacity: 0.6;
}

.tooltip {
    position: absolute;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid #ddd;
    border-radius: 5px;
    pointer-events: none;
    font-size: 14px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    max-width: 300px;
    line-height: 1.4;
    z-index: 1000;
}

.tooltip strong {
    display: block;
    margin-bottom: 5px;
    font-size: 15px;
    color: #333;
}

.tooltip em {
    color: #4285f4;
    font-style: italic;
}

#paperConcepts {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.controls {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--bg);
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
    max-height: 80vh;
    overflow-y: auto;
    border: 8px solid #000; /* Add this line for a black border */
}

.control-section {
    border-top: 1px solid #eee;
    padding-top: 10px;
    margin-top: 10px;
}

.control-section h4 {
    margin-top: 0;
    margin-bottom: 10px;
    color: #333;
    font-weight: bolder;
    font-family: Georgia, 'Times New Roman', Times, serif;
}

.controls label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-style: italic;
    font-family:'Times New Roman', Times, serif;
}

.controls input {
    width: 100px;
}

button {
    margin-top: 10px;
    padding: 8px 12px;
    background-color: black;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #3b78e7;
}

/* Improved legend styling */
.legend {
    position: absolute;
    right: 20px;
    top: 20px;
    background-color: var(--bg);
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 100;
    max-width: 250px;
    border: 8px solid #000; /* Add this line for a black border */
}

.legend h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-family: Georgia, 'Times New Roman', Times, serif;
}


.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    height: 24px; /* Standardize height for all items */
    font-family: 'Times New Roman', Times, serif;
}

/* Standardize all legend indicators */
.legend-indicator {
    width: 32px; /* Increased from 24px */
    height: 32px; /* Increased from 24px */
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Specific styles for different shapes */
.legend-circle {
    border-radius: 50%;
}

.legend-circle.main {
    width: 16px;
    height: 16px;
    background-color: #4285f4;
}

.legend-circle.referenced {
    width: 12px;
    height: 12px;
    background-color: #34a853;
}

.legend-circle.citing {
    width: 12px;
    height: 12px;
    background-color: #ea4335;
}

.legend-diamond {
    width: 12px;
    height: 12px;
    background-color: #fbbc05;
    transform: rotate(45deg);
}

.legend-star svg {
    width: 20px;
    height: 20px;
}

.legend-arrow {
    width: 50px;
    height: 20px;
}

.legend-info {
    font-weight: bold;
    color: #555;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

.legend-info p {
    margin: 5px 0;
}


#loadingIndicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: none;
}

/* New styles for paper details panel */
.paper-details-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: white;
    width: 350px;
    max-height: 80vh;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 200;
    display: none;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background-color: #4285f4;
    color: white;
}

.panel-header h3 {
    margin: 0;
    font-size: 16px;
}

.close-button {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    margin: 0;
    padding: 0;
}

.panel-content {
    padding: 15px;
    overflow-y: auto;
    max-height: calc(80vh - 50px);
}

#paperInfo {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

#paperTitle {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 16px;
    color: #333;
}

#paperType, #paperCitations {
    margin: 5px 0;
    font-size: 14px;
    color: #555;
}

#paperConcepts {
    margin-top: 10px;
}

.concept-tag {
    display: inline-block;
    padding: 4px 8px;
    margin: 3px;
    background-color: #e8f0fe;
    color: #4285f4;
    border-radius: 12px;
    font-size: 12px;
}

.paper-link {
    margin-top: 15px;
}

.paper-link a {
    color: #4285f4;
    text-decoration: none;
    font-weight: bold;
}

.paper-link a:hover {
    text-decoration: underline;
}

.paper-lists {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.paper-list h5 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 14px;
    color: #333;
}

.paper-list ul {
    margin: 0;
    padding: 0;
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

.paper-list li {
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}

.paper-list li:last-child {
    border-bottom: none;
}

.paper-list a {
    color: #4285f4;
    text-decoration: none;
    font-size: 13px;
    display: block;
}

.paper-list a:hover {
    text-decoration: underline;
}

.paper-type-label {
    display: inline-block;
    padding: 2px 6px;
    margin-right: 5px;
    border-radius: 3px;
    font-size: 11px;
    color: white;
}

.paper-type-main {
    background-color: #4285f4;
}

.paper-type-reference {
    background-color: #34a853;
}

.paper-type-citation {
    background-color: #ea4335;
}

.paper-type-bridge {
    background-color: #fbbc05;
}

/* Make the legend move up when details panel is open */
.paper-details-panel.active + .legend {
    top: calc(80vh + 30px);
}

/* Selected node styling */
.node.selected circle,
.node.selected rect,
.node.selected path {
    stroke: #000;
    stroke-width: 2px;
}

/* Responsive design for smaller screens */
@media (max-width: 768px) {
    .paper-details-panel {
        width: 100%;
        max-width: none;
        top: auto;
        bottom: 0;
        right: 0;
        max-height: 50vh;
        border-radius: 5px 5px 0 0;
        transform: translateY(100%);
    }
    
    .paper-details-panel.active {
        transform: translateY(0);
    }
    
    .controls {
        max-width: 250px;
    }
    
    .legend {
        max-width: 200px;
    }
}
/* 
/* Add to gra.css */
/* .loading-section {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 100;
    width: 300px;
}  */

#statusMessage {
    margin-bottom: 10px;
    font-weight: bold;
}

.progress-container {
    width: 100%;
    height: 10px;
    background-color: #f0f0f0;
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background-color: #4285f4;
    transition: width 0.3s ease;
}





.time-navigation {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg);
    padding: 12px 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    z-index: 100;
    border: 8px solid #000; /* Add this line for a black border */
}

.time-navigation button {
    margin: 0 10px;
    padding: 8px 12px;
    background-color: black;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.time-navigation button:disabled {
    background-color: black;
    cursor: not-allowed;
}

.time-indicator {
    font-weight: bold;
    margin: 0 15px;
}

.time-slider-container {
    display: flex;
    flex-direction: column;
    width: 400px;
}

.time-slider {
    width: 100%;
    margin: 5px 0;
}

.time-labels {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #666;
}

.time-loader {
    height: 3px;
    background-color: #4285f4;
    width: 0%;
    transition: width 0.3s;
    margin-top: 5px;
}

/* Animation for transitions */
.node.exiting {
    opacity: 0;
    transition: opacity 0.5s;
}

.node.entering {
    opacity: 0;
    animation: fadeIn 0.5s forwards;
    animation-delay: 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}