* {
    margin: 0;
    padding: 0;
    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, 0.05);
    --surface-color-hover: rgba(0, 0, 0, 0.02);
    --highlight-color: rgba(255, 255, 255, 0.08);
    --switch-bg-url: 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, 0.02);
    --highlight-color: rgba(0, 0, 0, 0.1);
    --switch-bg-url: url('../assets/sun.svg');
}

body {
    background-image: var(--bg-url);
    background-repeat: no-repeat;
    background-position:top center;
    background-size: cover;

    /*background: color image repeat position/size */

    /* background: url(../assets/bg-mobile.jpg) no-repeat top center/cover; */
}

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

#container {
    width: 360px;
    margin: 56px auto 0px auto;
    padding: 0 24px;
}

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

#profile img {
    border-radius: 100%;
    width: 112px;
}

#profile p {
    font-weight: 500;
    line-height: 24px;
    margin-top: 8px;
}

#switch {
    position: relative;
    width: 64px;
    margin: 4px auto;
}

 /* Switches */
 #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%);
 }

 .light #switch button{
    right: 0;
    left: initial;
 }

 #switch span {
    display: block;
    width: 64px;
    height: 32px;
    background: var(--surface-color);
    border: 1px solid var(--stroke-color);
    backdrop-filter: blur(4px);
    --webkit-backdrop-filter: blur(4px);
    border-radius: 9999px;
 }

 /* links */
 ul {
     display: flex;
     list-style: none;
     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(--surface-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 0.9s;
}

ul li a:hover {
    background-color: var(--surface-color-hover);
    border: 1px solid var(--text-color);
}

/* social links */

#social-links {
    display: flex;
    justify-content: center;

    padding: 24px 0;

    font-size: 24px;

}

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

    transition: background(0.2px);
    border-radius: 50%;
}

#social-links a:hover {
    background-color: var(--highlight-color);
    padding: 16px;
}