body, html {
    margin: 0;
    padding: 0;
    overflow: hidden;
    height: 100%;
    width: 100%;
    background-color: #ffffff;
}

#sandbox-canvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #ffffff;
}

#controls {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px 0;
    background-color: rgba(240, 240, 240, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 1px solid #ccc;
}

.trail-button {
    padding: 10px 15px;
    font-size: 1em;
    font-family: sans-serif;
    border: 2px solid #ccc;
    background-color: #fff;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    user-select: none;
}

.trail-button:hover {
    background-color: #e9e9e9;
    border-color: #999;
}

.trail-button.active {
    color: white;
    font-weight: bold;
    border-color: #000;
}

.trail-button[data-trail="fire"].active { background-color: #ff4500; }
.trail-button[data-trail="water"].active { background-color: #1e90ff; }
.trail-button[data-trail="stone"].active { background-color: #8B4513; }
.trail-button[data-trail="wind"].active { background-color: #87CEEB; }
.trail-button[data-trail="ice"].active { background-color: #00FFFF; color: black; }
.trail-button[data-trail="lightning"].active { background-color: #ffd700; color: black; }
.trail-button[data-trail="plant"].active { background-color: #228B22; }
.trail-button[data-trail="light"].active { background-color: #fffacd; color: black; }
.trail-button[data-trail="darkness"].active { background-color: #483d8b; }

@media (max-width: 600px) {
    .trail-button {
        padding: 8px 10px;
        font-size: 0.9em;
    }
    #controls {
        gap: 5px;
    }
}