/* Node Styling */
.node-circle {
    fill: #fff;
    stroke: #e2e8f0;
    stroke-width: 2px;
    transition: all 0.3s ease;
}

.node-text {
    font-size: 14px;
    font-weight: 600;
    fill: #475569;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
    transition: all 0.3s ease;
}

/* Edges */
.edge-line {
    stroke: #cbd5e1;
    stroke-width: 2px;
    transition: all 0.3s ease;
}

/* Highlight States */
.node-processing .node-circle {
    stroke: #3b82f6;
    fill: #eff6ff;
    stroke-width: 3px;
}

.node-processing .node-text {
    fill: #1d4ed8;
}

.node-success .node-circle {
    stroke: #10b981;
    fill: #ecfdf5;
    stroke-width: 3px;
}

.node-success .node-text {
    fill: #065f46;
}

.node-error .node-circle {
    stroke: #ef4444;
    fill: #fef2f2;
    stroke-width: 3px;
}

.node-error .node-text {
    fill: #991b1b;
}

/* History Animations */
@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.history-item {
    animation: fadeInSlide 0.3s ease forwards;
}

/* Details Transition Support */
details > div {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Custom Scrollbar */
.custom-scrollbar::-webkit-scrollbar {
    width: 4px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: #e2e8f0;
    border-radius: 10px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: #cbd5e1;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    #treeSvg {
        min-width: 800px;
        min-height: 800px;
    }

    .node-circle {
        r: 18px;
    }

    .node-text {
        font-size: 12px;
    }
}