/* ROBOTO FONT */  
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@100;300;400;500;700&display=swap');

/* POPPINS FONT */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');


/* ===== Color Variables */
:root{
    --bg-color: linear-gradient(to bottom right,#EEEEEE, #E0E3EB);
    --white-color: #FFFFFF;
    --black-color: #000E1A;
    --orange-color: #FFA500;
    --medium-dark: #333333;
    --light-gray: #CCCCCC;
  
 }
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins',sans-serif;
}
body
{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-color);
}
.container
{
    max-width: 400px;
    width: 100%;
    border-radius: 30px;
    padding: 20px;
    background: var(--black-color);
    color: var(--white-color);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}
.display-container
{
    display: flex;
    flex-direction: column;
    margin-block: 40px 30px;
}
.history
{
    font-family: 'Roboto',sans-serif;
    width: 100%;
    height: 30px;
    text-align: right;
    color: var(--light-gray);
    font-weight: 300;
}
.display
{
    font-size: 50px;
    font-family: 'Roboto',sans-serif;
    font-weight: 100;
    height: 70px;
    width: 100%;
    text-align: right;
    outline: none;
    border: none;
    pointer-events: none;
    background: transparent;
    color: var(--white-color);
}
::placeholder
{
    color: var(--white-color);
}
.buttons
{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    row-gap: 15px;
}
.buttons button
{
    width: 75px;
    height: 75px;
    font-size: 24px;
    font-weight: 300;
    background-color: var(--medium-dark);
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}
.buttons .operator
{
    background-color: var(--orange-color);
}
.operator.top-operator
{
    background-color: var(--light-gray);
    color: var(--black-color);
}
.buttons button:active
{
    transform: scale(0.95);
}
button.value-zero
{
    width: calc(50% - 8px);
    border-radius: 50px;
}