body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #383838;
}

.app {
    width: 320px;
    height: 630px;
    font-family: sans-serif;
    position: relative;
    overflow: hidden; 
}

/* form */

.form {
    height: 50px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    box-sizing: border-box;
    padding: 8px;
    display: flex;
}

input {
    border: none;

    font-size: 14px;
    outline: none;
    border-radius: inherit;
    padding: 0 8px;
}
  
#username {
    flex-grow: 1;

    background-color: rgba(255, 255, 255, 0.9);
    color: #42454e;
}
  
#search {
    margin-left: 8px;

    background-color: rgba(0, 97, 145, 0.75);
    color: rgba(255, 255, 255, 0.8);
    font-weight: bold;
    cursor: pointer;
}

#search:hover {
    background-color: rgba(0, 97, 145, 0.45);
}

#search:active {
    transform: scale(0.98);
    background-color: rgba(0, 97, 145, 0.75);
}

/* profile card */

.profile {
    width: 320px;
    margin: 20px 0 0 0;
    display: flex;
    flex-direction: column;
    --avatar: url(https://avatars3.githubusercontent.com/u/583231?v=4);
    border-radius: 5px;
    position: absolute;
    overflow: hidden;
}

.profile::before {
    content: '';
    position: absolute;
    width: calc(100% + 20px * 2);
    height: calc(100% + 20px * 2);
    background-image: var(--avatar);
    background-size: cover;
    z-index: -1;
    margin: -20px;
    filter: blur(10px);
}

.header {
    height: 380px;
    background-color: rgba(0, 97, 145, 0.45);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.avatar {
    width: 140px;
    height: 140px;
    background-image: var(--avatar);
    margin: 70px 0 0 0;
    background-position: center;
    background-size: cover;
    border-radius: 50%;
    box-shadow: 
        0 0 0 0.8em rgba(0, 0, 0, 0.2),
        0 0 0 1em rgba(161, 220, 255, 0.35);
}

.name {
    margin: 50px 0 0 0;
    color: white;
    font-size: 28px;
    font-weight: normal;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.location {
    margin: 5px 0 0 0;
    color: rgba(255, 255, 255, 0.75);
    font-weight: normal;
}

.footer {
    height: 180px;
    background-color: rgba(0, 97, 145, 0.75);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.details {
    list-style-type: none;
    padding: 0;
    display: flex;
    margin: 40px 0 0 0;
}

.details li {
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 0 6px;
}

.details li span {
    display: block;
    color: rgba(255, 255, 255, 0.8);
}

.details li:not(:first-child) {
    border-left: 2px solid rgba(255, 255, 255, 0.15);
}

.to-github {
    margin: 30px 0 0 0;
    display: block;
    width: 200px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.5);
    text-align: center;
    line-height: 40px;
    color: rgba(0, 0, 0, 0.75);
    text-decoration: none;
    text-transform: uppercase;
    border-radius: 20px;
    transition: 0.3s;
}

.to-github:hover {
    background-color: rgba(255, 255, 255, 0.8);
}

/* alert box */

.alert {
    position: absolute;
    top: 70px;
    width: 50%;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    text-align: center;
    line-height: 50px;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 0 5px;
    left: 100%;
}