style.css

*,
*::before,
*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'League Spartan', sans-serif;
}

.wrapper{
    width: 100lvw;
    height: 100lvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-image: url(https://password-generator-advance.netlify.app/assets/pexels-giovanni-vardan-13371419-9e398e56.jpg);
    background-position: center center;
    background-size: cover;
}

.container{
    width: 100%;
    max-width: 450px;
    padding: 13px 13px;
}

h1{
    color: black;
    font-weight: bold;
    opacity: 0.75;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-align: center;
    line-height: 1.2;
}
.screen{
    position: relative;
    backdrop-filter: blur(16px) saturate(180%);
    background-color: rgba(255, 255, 255, .6);
    border-radius: 1rem;
    border-bottom: 0.35rem solid whitesmoke;
    margin: 1rem 0;
    padding-top: 0.35;
    box-shadow: 0px 0px 15px black;
}

.display{
    width: 100%;
    background-color: transparent;
    padding: 1.15rem 1rem;
    border: none;
    color: black;
    font-weight: 600;
    font-size: 1.5rem; 
    line-height: 30px;
    letter-spacing: 1px;
    padding-right: 3.25rem;
}

.display::placeholder{
    position: absolute;
    top: 50%;
    left: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 30px;
    color: rgba(22, 59, 226, 0.965);
    opacity: 0.65;
    text-transform: uppercase;
    transform: translateY(-50%);
}

.screen button{
    position: absolute;
    top: 50%;
    right: 1.5rem;
    transform: translateY(-50%);   
}

.inputCard{
    backdrop-filter: blur(15px) saturate(180%);
    background-color: rgba(255, 255, 255, .6);
    width: 100%;
    margin-top: 2rem;
    border-radius: 12px;
    padding: 2rem;
    border-bottom: 0.35rem solid whitesmoke;
    box-shadow: 0px 0px 50px black;
}

.length{
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.length p:nth-child(1){
    color: white;
    font-size: 1.5rem;
}

.length p:nth-child(2){
    color: rgba(43, 137, 237, 0.915);
    font-size: 1.5rem;
    font-weight: 600;
}

.strength{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.75rem;
    margin-bottom: 1rem;
}

.strength p{
    color: black;
    font-weight: 600;
    font-size: 1.5rem;
}

.indicator{
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
}

.generate{
    width: 100%;
    padding: 1rem 0;
    background-color: rgba(29, 62, 208, 0.865);
    text-align: center;
    border-radius: 12px;
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.1rem;
    color: white;
    text-transform: uppercase;
}

.check{
    display: flex;
    align-items: center;
    margin: 1rem 0;
    gap: 0 1rem;
}

.check input{
    appearance: none;
    width: 20px;
    height: 20px;
    border: 1px solid beige;
    cursor: pointer;
    position: relative;
    border-radius: 1.35rem;
}

.check input:checked{
    background-color: rgba(29, 62, 208, 0.865);
}

.check input:checked:before{
    content: '✔';
    position: absolute;
    color: white;
    font-size: 1.05rem;
    font-weight: 600;
    left: 20%;
    top: -3.5px; 
}

.copymsg{
    position: absolute;
    background-color: violet;
    color: white;
    font-size: 1.25rem;
    top: -40px;
    left: -25px;
    padding: 5px 10px;
    border-radius: 1rem;
    opacity: 0;
    transform: scale(0);
    transform-origin: bottom;
    transition: all 250ms ease-in-out;
}

.datacpy{
    background-color: transparent;
    border:none;
    outline:none;
}

.copymsg.active{
    opacity: 1;
    transform: scale(1);
}

.check label{
    color: black;
    font-size: 1.25rem;
    letter-spacing: 0.75px;
}

.slider{
    appearance: none;
    width: 100%;
    height: 0.50rem;
    cursor: pointer;
    background-color: white;
    border-radius: 1rem;
    margin-top: 1.2rem;
    margin-bottom: 1.5rem;
    outline: none;
    border: none;
    z-index: -1;
}

.slider::-webkit-slider-thumb{
    position: relative;
    z-index: 1;
    appearance: none;
    height: 1.5rem;
    width: 1.5rem;
    border-radius: 50%;
    background-color: yellow;
    cursor: pointer;
    margin-top: -3px;
    box-shadow: 0px 0px 20px 0px rgba(255, 229, 61, 0.50);
    transition: all 100ms ease-in;
}

.slider:focus{
    outline: 3px solid rgba(43, 137, 237, 0.915);
}

.slider::-webkit-slider-thumb:hover{
    background-color: black;
    box-shadow: 0px 0px 25px 5px rgba(255, 229, 61, 0.80);
}