:root {
    --neuro-bg: #05070a;
    --neuro-surface: #0a0e16;
    --neuro-accent: #00f2ff;
    --neuro-electric: #7000ff;
    --neuro-text: #e0e6ed;
    --neuro-dim-text: #8892b0;
    --neuro-border: #1e293b;
    --neuron-cell: #00f2ff;
    --neuron-axon: #7000ff;
    --synapse-neurotransmitter: #ff007a;
}

body {
    background-color: var(--neuro-bg);
    color: var(--neuro-text);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    margin: 0;
    padding: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.home-nav a {
    color: var(--neuro-accent);
    text-decoration: none;
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

h1 {
    font-size: 4rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--neuro-accent), var(--neuro-electric));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--neuro-dim-text);
}

strong {
    color: var(--neuro-accent);
}

.section-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 242, 255, 0.1);
    color: var(--neuro-accent);
    border: 1px solid rgba(0, 242, 255, 0.2);
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.interactive-container {
    background: var(--neuro-surface);
    border: 1px solid var(--neuro-border);
    border-radius: 12px;
    padding: 2rem;
    margin: 3rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.interactive-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neuro-accent), transparent);
}

canvas {
    max-width: 100%;
    cursor: crosshair;
}

.controls {
    margin-top: 2rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}

button {
    background: rgba(112, 0, 255, 0.1);
    border: 1px solid var(--neuro-electric);
    color: var(--neuro-text);
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

button:hover {
    background: var(--neuro-electric);
    box-shadow: 0 0 15px rgba(112, 0, 255, 0.5);
}

.toc {
    border-left: 2px solid var(--neuro-border);
    padding-left: 2rem;
    margin: 4rem 0;
}

.toc-title {
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: #444;
    text-transform: uppercase;
}

.toc-part {
    margin-top: 1.5rem;
    color: var(--neuro-text);
    font-weight: bold;
}

.toc ol {
    list-style-type: none;
    padding-left: 0;
}

.toc li {
    margin-bottom: 0.5rem;
}

.toc a {
    color: var(--neuro-dim-text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.toc a:hover {
    color: var(--neuro-accent);
}

footer {
    padding: 4rem 0;
    text-align: center;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: #444;
    border-top: 1px solid var(--neuro-border);
}

/* Specific labels in visuals */
.visual-label {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    fill: var(--neuro-dim-text);
}

.visual-title {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    fill: var(--neuro-accent);
}