body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
    margin: 0;
    padding: 0;
    color: #222;
}

h1 {
    margin-top: 20px;
    color: #333;
}

#game-board {
    display: inline-block;
    margin: 20px auto;
    border: 2px solid #333;
    background-color: #2196f3; /* blue background simulating board */
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 10px;
}

.row {
    display: flex;
}

.cell {
    width: 60px;
    height: 60px;
    margin: 4px;
    border-radius: 50%;
    border: 2px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background-color: #e0e0e0;
    transition: background-color 0.3s, transform 0.3s;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
}

.cell[data-player="1"] {
    background-color: red;
}

.cell[data-player="2"] {
    background-color: blue;
}

/* drop animation */
.cell.drop {
    animation: drop 0.4s ease;
}

@keyframes drop {
    from { transform: translateY(-150px); }
    to { transform: translateY(0); }
}

/* highlight column when user hovers */
.cell.hover {
    background-color: #fff !important;
    transform: scale(1.1);
}

#status {
    margin: 20px;
    font-size: 1.5em;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

#reset-button {
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

#reset-button:hover {
    background-color: #555;
}

/* responsive adjustments */
@media (max-width: 600px) {
    .cell {
        width: 40px;
        height: 40px;
        margin: 2px;
    }
    #status {
        font-size: 1.2em;
    }
}