.calcButtons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px; 
}

.calcButtons button {
    height: 60px;
    font-size: 1.5rem;
/*     border: none; */
    background-color: #444;
    color: #fff;
    cursor: pointer;
    border-radius: 5px;
    box-shadow: 0px 4px 8px #111;
    transition: background-color 0.2s; 
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.calcButtons button:hover {
    background-color: #222; 
}

.calcButtons button:active {
    transform: scale(0.95); 
    box-shadow: 0px 2px 4px #111; 
}

.currentInput {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    height: 60px;
    width: 100%;
    background-color: #333;
    color: #fff;
    font-size: 2rem;
    text-align: right;
    padding: 0 20px;
    line-height: 80px;
    border-radius: 5px;
}


.inputContainer {
    display: flex; 
    align-items: center;
    gap: 10px; 
    margin-bottom: 20px; 
}

.clearButton {
    height: 60px;
    background-color: #ff3b30; 
    color: white;
    font-size: 1.5rem;
    border: none;
    border-radius: 5px;
    padding: 10px 20px; 
    cursor: pointer;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
    transition: background-color 0.2s; 
}

.clearButton:hover {
    background-color: #d1251c; 
}

.keyboardInstructions {
    color: #fff;
    padding: 10px;
    border-radius: 5px;
    font-size: 0.9rem; 
    line-height: 1.4; 
}

.keyboardInstructions ul {
    background-color: #444;
    padding: 10px;
    border-radius: 10px;
    margin: 0;
    padding-left: 20px;
}


.keyboardInstructions code {
    background-color: #555;
    color: #fff;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: monospace; 
}

.history {
    background-color: #444;
    color: #fff;
    padding: 10px;
    border-radius: 5px;
    min-height: 100px;
}