body {
    background-color: #F8F9FA;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.game-container {
    max-width: 500px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    border: 2px solid #dee2e6;
    padding: 8px;
    background-color: #fff;
    border-radius: 0.5rem;
}

.grid-cell {
    width: 100%;
    padding-top: 100%; /* Creates a square aspect ratio */
    position: relative;
    background-color: #f1f3f5;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
}

.grid-cell:hover {
    background-color: #e9ecef;
}

.grid-cell.filled {
    background-color: #e7f5ff;
    cursor: default;
}

.cell-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #343a40;
}

.timer, .status-message {
    font-size: 1.5rem;
    font-weight: 500;
}

.accent-color {
    color: #FD7E14;
}

.countdown-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    color: white;
    font-size: 10rem;
    font-weight: bold;
}