* {
    box-sizing: border-box;
}

:root{
    --text-color: white;
    --bg-url: url(./assets/bg-mobile.jpg);
    --stroke-color: rgba(255, 255, 255, 0.5);
    --surface-color: rgba(255, 255, 255, 0.1);
    --surface-color-hover: rgba(255, 255, 255, 0.2);
    --highlight-color: rgba(255, 255, 255, 0.3);
    --switch-bg: url(./assets/moon-stars.svg);
    

}

.light{
    --text-color: black;
    --bg-url : url(./assets/bg-mobile-light.jpg);
    --stroke-color: rgba(0, 0, 0, 0.5);
    --surface-color: rgba(0, 0, 0, 0.05);
    --surface-color-hover: rgba(0, 0, 0, 0.2);
    --highlight-color: rgba(0, 0, 0, 0.3);
    --switch-bg: url(./assets/sun.svg);
}

html, body {
    height: 100%;
}

body {
    background: var(--bg-url) no-repeat center center;
    background-size: cover;
    background-color: #000;
    height: 100vh;
}


/*switch*/

#switch {

    position: relative;
    width: 64px;
    margin: 4px auto;
}

#switch button{
    width: 32px;
    height: 32px;
    background: white var(--switch-bg) no-repeat center;
    border: 0;
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    animation: slide-Out 0.4s ;
}

#switch span {
    display: block;
    width: 64px;
    height: 24px;
    background-color: var(--surface-color);
    border: 1px solid var(--stroke-color);
    border-radius: 9999px;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);

}
.light #switch button{
    animation: slide-In 0.2s forwards;
}

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

/*profile*/
#profile{
    /* center the image on the page */
    display: block;
    margin: auto;
    /* make it a fixed square so border-radius can create a circle */
    width: 200px;
    height: 200px;
    /* crop/scale inside the box without distortion */
    object-fit: cover;
    /* circular shape */
    border-radius: 50%;
    /* optional subtle border for definition */
}


/*container*/

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

/*social links*/
#social-links{
    display: flex;
    padding: 24px 0;
    font-size: 30px;
    justify-content: center;
    
}

#social-links a{
    display: flex;
    color: var(--text-color);
    justify-content: center;
    align-items: center;
    padding: 16px;
    transition: background 0.2s;
    border-radius: 50%;
}

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

/*ul de links*/
ul {
    list-style: none;

    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px 0;
    
}
ul li a{
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    
    padding: 16px 24px;

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

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

}

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


/*footer*/
footer {
    text-align: center;
    padding:  24px 0;
    color: var(--text-color);
    font-size: 14px;
}
@media (min-width: 768px) {
    :root{
        --bg-url: url(./assets/bg-desktop.jpg);
    }
    .light{
        --bg-url : url(./assets/bg-desktop-light.jpg);
    }
}
@keyframes slide-In {
    from {
        left: 0;
    }
    to {
        left: 50%;
    }
}
@keyframes slide-Out {
    from {
        left: 50%;
    }
    to {
        left: 0;
    }
}