.node-selection-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
    animation: fadeIn 0.2s ease-out;
}

.node-selection-panel {
    background: rgba(17, 17, 17, 0.95);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 16px;
    padding: 2rem;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    color: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s ease-out;
    position: relative;
}

.node-selection-panel::-webkit-scrollbar {
    width: 6px;
}

.node-selection-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.node-selection-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.node-selection-panel::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.panel-header h2 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 600;
    background: linear-gradient(90deg, #fff, #999);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.close-button {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    border-radius: 50%;
    width: 36px;
    height: 36px;
}

.close-button:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.node-types {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.node-type-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.node-type-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid;
    border-color: var(--node-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.node-type-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.node-type-item:hover::before {
    transform: translateX(100%);
}

.node-type-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.node-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 6px;
    color: white;
    font-size: 25px;
}

.node-icon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: transform 0.6s ease;
}

.node-type-item:hover .node-icon::after {
    transform: translateX(100%);
}

.node-info {
    flex: 1;
}

.node-info h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.25rem;
}

.node-info p {
    margin: 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.4;
}

.agent-list {
    margin-left: 4rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 0.5rem;
    height: 15vh;
    overflow-y: auto;
    max-height: 25vh;
}

.agent-list::-webkit-scrollbar {
    width: 6px;
}

.agent-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.agent-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.agent-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.agent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.agent-item:hover {
    transform: translateX(4px);
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.agent-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    gap: 8px;
}

.agent-special-icon {
    color: #4C1D95;
    font-size: 0.9rem;
}

.researcher-agent {
    background: rgba(76, 29, 149, 0.15);
    border-color: rgba(76, 29, 149, 0.3);
    position: relative;
}

.researcher-agent:hover {
    background: rgba(76, 29, 149, 0.25);
    border-color: rgba(76, 29, 149, 0.4);
}

.researcher-agent::after {
    content: 'Special node with unique connection rules';
    position: absolute;
    bottom: -10px;
    left: 0;
    right: 0;
    color: #4C1D95;
    font-size: 0.65rem;
    opacity: 0;
    transition: all 0.3s ease;
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
    padding: 2px 4px;
    pointer-events: none;
    transform: translateY(5px);
}

.researcher-agent:hover::after {
    opacity: 1;
    transform: translateY(0);
}

.node-constraint {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.2;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}

.node-constraint svg {
    flex-shrink: 0;
}

.agent-status {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Light theme adjustments */
:root[data-theme="light"] .node-selection-panel {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.1);
    color: black;
}

:root[data-theme="light"] .panel-header h2 {
    background: linear-gradient(90deg, #333, #666);
    -webkit-background-clip: text;
    background-clip: text;
}

:root[data-theme="light"] .close-button {
    background: rgba(0, 0, 0, 0.1);
    color: rgba(0, 0, 0, 0.6);
}

:root[data-theme="light"] .close-button:hover {
    color: black;
    background: rgba(0, 0, 0, 0.15);
}

:root[data-theme="light"] .node-type-item {
    background: rgba(0, 0, 0, 0.03);
}

:root[data-theme="light"] .node-type-item:hover {
    background: rgba(var(--node-color-rgb), 0.1);
}

:root[data-theme="light"] .node-info h3 {
    color: black;
}

:root[data-theme="light"] .node-info p {
    color: rgba(0, 0, 0, 0.6);
}

:root[data-theme="light"] .agent-name {
    color: rgba(0, 0, 0, 0.9);
}

:root[data-theme="light"] .agent-status {
    color: rgba(0, 0, 0, 0.6);
    background: rgba(0, 0, 0, 0.05);
}

:root[data-theme="light"] .node-constraint {
    background: rgba(0, 0, 0, 0.05);
    color: rgba(0, 0, 0, 0.6);
}

:root[data-theme="light"] .researcher-agent {
    background: rgba(76, 29, 149, 0.1);
}

:root[data-theme="light"] .researcher-agent:hover {
    background: rgba(76, 29, 149, 0.15);
}

:root[data-theme="light"] .researcher-agent::after {
    background: rgba(255, 255, 255, 0.95);
    color: #4C1D95;
    border: 1px solid rgba(76, 29, 149, 0.2);
}

/* Node color classes for each type */
.node-color-input:hover {
    background: rgba(99, 102, 241, 0.1);
}

.node-color-agent:hover {
    background: rgba(16, 185, 129, 0.1);
}

.node-color-insights:hover {
    background: rgba(245, 158, 11, 0.1);
}

.node-color-notify:hover {
    background: rgba(239, 68, 68, 0.1);
}

.node-color-publish:hover {
    background: rgba(220, 38, 38, 0.1);
}