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

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg, #0a0a0a,#3a4452);
    padding: 10px;
}
.container{
    border: 1px solid #717377;
    padding: 20px;
    border-radius: 16px;
    background: transparent;
    box-shadow: 0 3px 15px rgba(113,115,119,0.5);
    max-width: 400px;
    width: 100%;
}
input{
    width: 100%;
    border: none;
    padding: 20px;
    margin: 10px 0;
    background: transparent;
    box-shadow: 0 3px 15px rgba(84, 84, 84, 0.1);
    font-size: 2rem;
    text-align: right;
    cursor: pointer;
    color: #fff;
}
input::placeholder{
    color: #fff;
}
.row{
    display: flex;
    justify-content: space-between;
}
button{
    flex: 1;
    margin: 8px;
    border: none;
    aspect-ratio: 1/1;
    border-radius: 50%;
    background: transparent;
    color: #ffffff;
    font-size: 1.2rem;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.085);
    cursor: pointer;
    transition: all 0.2s ease;
}
button:active {
  transform: scale(0.9);
  background: rgba(255,255,255,0.1);
  transition: 0.1s;
}

.equal-button{
    background-color: #fb7c14;
    color: #fff;
}
.operator{
    color: #6dee0a;
}

@media (max-width: 500px) {
    .container {
        max-width: 95%;
        padding: 15px;
    }
    input {
        font-size: 1.5rem;
        padding: 15px;
    }
    button {
        font-size: 1rem;
        margin: 6px;
    }
}

@media (max-width: 350px) {
    input {
        font-size: 1.2rem;
    }
    button {
        font-size: 0.9rem;
        margin: 5px;
    }
}