* {
    box-sizing: border-box;
}

body,
html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
        sans-serif;
    background-color: #f0f0f0;
}

#pattern-svg {
    display: block;
    width: 100vw;
    height: 100vh;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.ui-overlay {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10;
    display: flex;
    gap: 10px;
}

button {
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition:
        background-color 0.2s,
        transform 0.1s;
}

button:hover {
    background-color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}