/* Network Graph Container Styles */
#network-container {
    width: 100%;
    height: calc(100vh - 260px);
    flex-grow: 1;
    margin: 1rem 0;
    border: none;
    border-radius: 16px;
    overflow: hidden;
    box-shadow:
        0 12px 40px hsla(0, 0%, 0%, 0.12),
        0 4px 12px hsla(0, 0%, 0%, 0.06);
    background: linear-gradient(135deg,
        hsla(0, 0%, 100%, 0.8),
        hsla(210, 20%, 98%, 0.9)
    );
    backdrop-filter: blur(10px);
    position: relative;
    transition: all 0.3s ease;
}


#network-graph {
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, hsla(210, 70%, 95%, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, hsla(200, 60%, 93%, 0.3) 0%, transparent 50%),
        linear-gradient(135deg,
            hsla(210, 15%, 96%, 0.6) 0%,
            hsla(200, 12%, 94%, 0.8) 100%
        );
    position: relative;
    border-radius: 16px;
}


/* Network Graph Loading State */
#network-graph::before {
    content: "네트워크 그래프 로딩 중...";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--md-default-fg-color--light, hsla(210, 25%, 45%, 1));
    font-size: 1.1rem;
    font-weight: 500;
    z-index: 1;
    pointer-events: none;
    padding: 1rem 2rem;
    background: hsla(0, 0%, 100%, 0.9);
    border-radius: 12px;
    box-shadow:
        0 4px 16px hsla(0, 0%, 0%, 0.1),
        0 1px 4px hsla(0, 0%, 0%, 0.05);
    backdrop-filter: blur(8px);
    border: 1px solid hsla(0, 0%, 100%, 0.2);
}

#network-graph.loaded::before {
    display: none;
}

/* Loading animation spinner */
#network-graph::after {
    content: "";
    position: absolute;
    top: calc(50% + 3rem);
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    border: 3px solid hsla(210, 25%, 85%, 1);
    border-top: 3px solid hsla(210, 70%, 60%, 1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1;
}

#network-graph.loaded::after {
    display: none;
}

@keyframes spin {
    0% { transform: translateX(-50%) rotate(0deg); }
    100% { transform: translateX(-50%) rotate(360deg); }
}

/* Responsive Design for Network Graph */
@media (max-width: 768px) {
    #network-container {
        height: calc(100vh - 140px);
        margin: 0.75rem 0;
        border-radius: 12px;
    }


    #network-graph {
        border-radius: 12px;
    }

    #network-graph::before {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

@media (max-width: 480px) {
    #network-container {
        height: calc(100vh - 120px);
        margin: 0.5rem;
        border-radius: 8px;
        box-shadow:
            0 4px 16px hsla(0, 0%, 0%, 0.06),
            0 1px 4px hsla(0, 0%, 0%, 0.03);
    }

    #network-graph {
        border-radius: 8px;
    }

    #network-graph::before {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    #network-graph::after {
        width: 24px;
        height: 24px;
        border-width: 2px;
    }
}

/* Dark Mode Support */
[data-md-color-scheme="slate"] #network-container {
    background: linear-gradient(135deg,
        hsla(215, 28%, 17%, 0.8),
        hsla(220, 26%, 14%, 0.9)
    );
    box-shadow:
        0 12px 40px hsla(0, 0%, 0%, 0.5),
        0 4px 12px hsla(0, 0%, 0%, 0.3);
}


[data-md-color-scheme="slate"] #network-graph {
    background:
        radial-gradient(circle at 20% 80%, hsla(220, 50%, 25%, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, hsla(210, 40%, 20%, 0.3) 0%, transparent 50%),
        linear-gradient(135deg,
            hsla(215, 25%, 16%, 0.8) 0%,
            hsla(220, 28%, 12%, 0.9) 100%
        );
}

[data-md-color-scheme="slate"] #network-graph::before {
    color: var(--md-default-fg-color--light, hsla(208, 25%, 75%, 1));
    background: hsla(215, 25%, 18%, 0.95);
    border: 1px solid hsla(210, 20%, 30%, 0.5);
}

/* Animation for network stabilization */
@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.network-loading {
    animation: pulse 2s infinite;
}

/* Fade-in animation when network loads */
#network-graph.loaded {
    animation: networkFadeIn 0.6s ease-out;
}

@keyframes networkFadeIn {
    0% {
        opacity: 0;
        transform: scale(0.95);
        filter: blur(4px);
    }
    100% {
        opacity: 1;
        transform: scale(1);
        filter: blur(0);
    }
}

/* Subtle breathing animation for loaded network */
#network-graph.loaded::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 25% 25%, hsla(210, 100%, 85%, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 75% 75%, hsla(200, 80%, 90%, 0.03) 0%, transparent 40%);
    border-radius: inherit;
    animation: breathe 4s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes breathe {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.02);
    }
}

/* Dark mode breathing effect */
[data-md-color-scheme="slate"] #network-graph.loaded::after {
    background:
        radial-gradient(circle at 25% 25%, hsla(220, 60%, 60%, 0.02) 0%, transparent 40%),
        radial-gradient(circle at 75% 75%, hsla(210, 50%, 70%, 0.02) 0%, transparent 40%);
}