body {
    font-family: 'Roboto', sans-serif;
    background-color: #1a1a1a;
    color: #e0e0e0;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    text-align: center;
    background: #2c3e50;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

#title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #00ffcc;
    text-shadow: 0 0 10px #00ffcc, 0 0 20px #00ffcc;
}

#description {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: #ff0066;
    text-shadow: 0 0 10px #ff0066, 0 0 20px #ff0066;
}

#heat-map {
    margin: 0 auto;
}

.cell {
    stroke: #fff;
    stroke-width: 1px;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.cell:hover {
    opacity: 1;
    transform: scale(1.1);
}

#legend {
    margin-top: 1rem;
}

#tooltip {
    position: absolute;
    text-align: center;
    width: 160px;
    padding: 10px;
    background: #2c3e50;
    color: #e0e0e0;
    border-radius: 6px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid #00ffcc;
}

footer {
    margin-top: 1rem;
    font-family: 'Orbitron', sans-serif;
    color: #00ffcc;
    text-shadow: 0 0 10px #00ffcc, 0 0 20px #00ffcc;
}