.knowledge-graph-container {
    width: 100%;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    overflow: hidden;
    position: relative;
}

.knowledge-graph-container.loading > ::deep svg {
    display: none !important;
}

.graph-controls {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: row;
    gap: 0.25rem;
    background: rgba(20, 20, 20, 0.4);
    backdrop-filter: blur(12px);
    padding: 0.35rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 10;
}

.zoom-btn {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    color: #aaa;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.zoom-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--nexus-neon);
    border-color: var(--nexus-neon);
}

.zoom-btn.reset {
    font-size: 0.8rem;
}

.loading-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    color: #fff;
    text-align: center;
    z-index: 20;
    background: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(8px);
    padding: 2rem 1.5rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    width: 85%;
    max-width: 280px;
    box-sizing: border-box;
}

.preloader-robot {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.neon-pulse {
    color: var(--nexus-neon);
    filter: drop-shadow(0 0 10px var(--nexus-neon));
    animation: robot-pulse 2s infinite ease-in-out;
}

@keyframes robot-pulse {
    0% { transform: scale(1); filter: drop-shadow(0 0 10px var(--nexus-neon)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 25px var(--nexus-neon)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 10px var(--nexus-neon)); }
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--nexus-neon);
    box-shadow: 0 0 15px var(--nexus-neon);
    animation: scan 2s infinite linear;
    opacity: 0.8;
}

@keyframes scan {
    0% { top: 0; }
    50% { top: 100%; }
    100% { top: 0; }
}

::deep .nexus-node-active {
    stroke: var(--nexus-neon) !important;
    stroke-width: 2px !important;
    filter: drop-shadow(0 0 12px var(--nexus-neon));
    transition: all 0.3s ease;
}

::deep @keyframes neon-flash {
    0% { filter: brightness(1) drop-shadow(0 0 0px var(--nexus-neon)); }
    50% { filter: brightness(3) drop-shadow(0 0 30px var(--nexus-neon)); }
    100% { filter: brightness(1) drop-shadow(0 0 0px var(--nexus-neon)); }
}

::deep .neon-flash-node {
    animation: neon-flash 0.8s ease-out;
}
