* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --text-color:white;
    --bg-url: url(./assets/bg-desktop.jpg);
    --stroke-color: rgb(255,255,255, 0.5);
    --surface-color:rgba(255,255, 255, 0.1);
    --surface-color-hover: rgba(255, 255, 255, 0.05);
    --highlight-color: rgba(255, 255, 255, 0.2);
    --switch-bg-url:url(./assets/moon-stars.svg);
}

.light {
    --text-color: black;      
    --bg-url: url(./assets/folhas.jpg);
    --stroke-color: rgba(0,0,0,0.5);
    --surface-color:rgba(0,0,0,0.05);
    --surface-color-hover: rgba(0,0,0,0,0.02);
    --highlight-color: rgba(0,0,0,0.1);
    --switch-bg-url: url(./assets/sun.svg);
}

body{
    /*
background-image: url(./assets/bg-mobile.jpg);
background-repeat: no-repeat;
background-position: top center;
background-size: cover;
*/
/*background: color image repeat position/size */

background: var(--bg-url) no-repeat top center/cover;
height: 100vh;
}

body * {
    font-family: 'Inter', sans-serif;
    color:var(--text-color);
}

#container {
width: 100%;
max-width: 588px;
margin: 56px auto 0px;
padding: 0 24px;

}
/*profile*/
#profile {
text-align:center;
padding: 24px;
}

#profile img {
        width: 112px;
} 

#profile p {
font-weight: 500;
line-height: 24px;
margin-top: 8px;
}
/*switch*/
#switch {
position: relative;
width: 64px;
margin: 4px auto;
}
#switch button {
width: 32px;
height: 32px;
background: white var(--switch-bg-url) no-repeat center;
border: 0;
border-radius: 50%;

position: absolute;
top: 50%;
left: 0;
z-index: 1;
transform: translateY(-50%);        

animation: slide-back 0.8s;
}

.light #switch button {
animation: slide-in 0.8s forwards;  
/* right: 0;*/ /*não iremos usar mais devido a animação*/
/* left: initial;*/ /*não iremos usar mais devido a animação*/
}

#switch span {
display: block;
width: 64px;
height: 24px;    
border: 1px solid var(--stroke-color);
background: var(--surface-color);
border-radius: 9999px;


}

#switch button:hover {
outline: 8px solid var(--highlight-color);
}

/*LINKS*/
ul {
list-style: none;
display: flex;
flex-direction: column;
gap: 16px;
padding: 24px 0;

}

ul li a {
    display: flex;
    align-items: center;
    justify-content: center;

    padding: 16px 24px;

    background-color: var(--stroke-color);
    border: 1px solid var(--stroke-color);
    border-radius: 8px;

    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);

    text-decoration: none; 
    font-weight: 500;
    transition: background 0.2s;

}
/*pseudo selector a:hover*/
    ul li a:hover {
    background: var(--surface-color-hover);
    border: 1.5px solid var(--text-color);
}

/*socila links */
#social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 24px 0;
    font-size: 24px;
}

#social-links a{
    display: flex;
    align-content: center;
    justify-content: center;
    padding: 16px;

    transition: background 0,2s;
    border-radius: 50%;
}

#social-links a:hover {
    background: var(--highlight-color);
}

footer {
    padding: 24px 0;
    text-align: center;
    font-size: 14px;        
    }

    /*media queries*/
    @media (min-width: 700px) {
        :root {
            --bg-url: url(./assets/bg-desktop.jpg);
        }

        .light {
            --bg-url: url(./assets/folhas.jpg);
        }
    }

    /* animation */

    @keyframes slide-in {
        from {
            left:0;
        }
        to {
            left:50%¨;
        }
    }
    @keyframes slide-back {
        from {
            left:50%;
        }
        to {
            left: 0;
        }
    }