* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text-color: #ffffff;
    --br-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, 0.2);
    --switch-bg-url: url(../assets/moon-stars.svg);
}


/* light mode */

.light {
    --text-color: #000000;
    --br-url: url(../assets/bg-mobile-lightmode.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);
}

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

#switch button {
    width: 32px;
    height: 32px;
    background: #ffffff 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 0.2s;
}

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

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

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

/* general */

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

    /* short-hand -> background: color image repeat position/size */ 
    background: var(--br-url) no-repeat top center/cover;
    height: 100vh;
}

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

/* profile */

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

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

#profile img {
    width: 112px;
}

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

/* 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: 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 0.2s;
}

a ion-icon {
    margin-right: 8px;
}

/* pseudo-selector */

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

/* Social-Links */

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

    padding: 24px 0;
    font-size: 24px;
}

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

footer {
    text-align: center;
    width: 100%;
    bottom: 0;
    /* position: fixed; */
    padding: 24px 0;
    /* left: 0; */
    /* right: 0; */
    margin: auto;
}

/* media queries */

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

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

/* animation */

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

@keyframes slide-back {
    from {
        left: 50%;
    }

    to {
        left: 0;
    }
}