*{
    padding: 0;margin: 0;box-sizing: border-box;
}
::selection{
    color: #ecb602;
    background-color: black ;
}
body{
    display:flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: black;
    overflow: hidden;
}

main{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
@media screen and (max-width:650px){
    main {
        flex-direction: column;
    } 
}

main button{
    padding: 20px;
    margin: 5px;
    border: none;
    border-radius: 8px;
    outline: 2px solid black;
    font-size: 1.5em;
    outline-offset: 2px;
}
.main button:first-child{
    background: grey;
    color: gold;
    text-shadow: 2px 2px 8px black;
}
.main button:nth-child(2){
    background: rebeccapurple;
    color: White;
    text-shadow: 2px 2px 8px black;
}
.main button:nth-child(3){
    background: khaki;
    text-shadow: 2px 2px 8px gray;
}
.main button:last-child{
    background: coral;
    text-shadow: 2px 2px 8px black;
}
.back{
    position: absolute;
    top: 10px;
    left:10px;
    color: #000;
    border: none;
    border-radius: 2px;
    padding:5px;
    outline: 2px solid #eee;
    outline-offset: 2px;
    background: gold;
}
/* calculator css */
.calculator{
    display:flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.calculator main{
    display:flex;
    justify-content: center;
    align-items: center;
    background: grey;
    padding: 15px;
    border-radius: 8px;
    flex-direction: column;
    height: 80%;
}
.calculator .screen{
    width: 100%;
    background: black;
    padding: 1rem;
    font-family: Terminal;
    color:green;
    font-size: 1.5em;
    text-align: right;
}
.btns{
    display: flex;
    justify-content: space-around;
}
.main-btn,.scientific-btn{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap:2px;
    margin-right:5px;
}
.btn-sci{
    background:gold ;
}
@media screen and (max-width:650px){
    .calculator main{
        width: fit-content;
        height: fit-content;
    }
    .btn{
        padding: 0;
    }
    .btns{
        display: flex;
        flex-direction: column;
    }
    .main-btn,.scientific-btn{
        margin-top: 5px;
    }
}


/* Password Generator */
.password-generator{
    display:flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.password-generator .container{ 
    width: 400px;
    background-color: rgb(69,17,118);
    box-shadow: 0 4px 10px rgba(0,0,0,0.6);
}

.header{
    padding: 1rem;
}

.pw{
    width: 100%;
    height:70px;
    background-color: rebeccapurple;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    font-size: 1.5rem;
    
}

.form-control input {
    background-color: gold;
    border-radius: 8px;
    width: 250px;
    text-align: center;
    border: none;
    font-size: 1.3rem;
}
.pw button{
    transition: opacity 0.2s ease;
    opacity: 0;
    background-color: rgb(35,5,66);
    font-weight: bold;
    padding: 0.25rem 1rem;
    color: #fff;          
    border: none;
    cursor: pointer;
}

.pw:hover button{
    opacity: 1;
}

.body{
    padding:  1rem;
}

.form-control{
    color: #eee;
    display: flex;
    flex-direction: column;
    margin: 0.75rem 0;
    height: 40vh;
}

.generate{
    background-color: #ecb602;
    border: none;
    outline: none;
    font-weight: bold;
    padding: 1rem;
    margin: 1rem;
    font-size: 1.5rem;
}
@media (max-width:683px) or (max-width:540px){
    .password-generator .container{
        width: 90vw;
    }
}

/* tic tac toe */

.tictactoe p{text-align: center;font-size: 35px; color:white;}

.board{display: flex; flex-direction: column;width: 100vw;height:90vh;background-color: black;padding:15px ; align-items: center; }
.main-board{width: 40%;  flex-wrap: wrap; display: flex; justify-content: center;align-items: center;height: 90vh;}
.box{background-color: aqua;display: flex;justify-content: center;align-items: center;font-size: 2.5rem; width: 150px; height: 150px; margin: 5px; }

@media (max-width:683px) or (max-width:540px){
    .board{
        justify-content: center;
    }
    .main-board{
    width: 60%;
    height: 40%;
    }
    .box{
    width: 15vw;
    height: 10vh;
    }
 }
/* rockpaperscissors */

.rockpaperscissors{
    height: 75vh;
}

.game-container{
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    width: 100vw;
    background: grey;
}
.game-board{
display: flex;
justify-content: space-around;
align-items: center;
flex-direction: column;
width: 100vw;
background: #6a5fe9ab;
height: 100vh;
}
.game-board .details,.imgs{
    display: flex;
    justify-content: space-around ;
    width: 100vw;
    align-items: center;
} 

.game-board p,.game-board button{
font-size:1.5em ;
background: gold;
padding: .2em .5em  ;
border-radius: 12px;
border: 2px solid black;    
}

@media (max-width:683px) or (max-width:540px){
    img{
        width: 150px;
    }
}