:root {
    --tower-gold: #e6c87a;
    --tower-shadow: #a08654;
    --dark-blue: #343d59;
    --sky-blue: #3a7eba;
    --medium-blue: #5d89a8;
    --light-blue: #7a879f;
    --night-blue: #3c4359;
    --light-gray: #f5f5f5;
    --warm-white: #f8eac0;
    --city-light: #fffaee;
    --fog-gray: #e0e5ea;
}
body{
    font-family: 'Verdana', sans-serif;
    line-height: 1.6;
    background: var(--night-blue);
}

header{
    background: var(--dark-blue);
    background: linear-gradient(to bottom, var(--sky-blue), var(--night-blue));
}
p{
    margin:30px;
}
h1{
    width: 50%;
    margin: auto;
}
 h1, h3, h4, h5{
    color: var(--tower-gold)
}
header > h3{
    width: 50%;
    margin: auto;
}
header > img{
    display: block;
    margin: auto;
    max-width: 100%;
    height: auto
}
main {
    margin: 4rem;
    color: var(--fog-gray);
}

nav {
    border-bottom: solid var(--tower-gold)
}
nav > ul{
    justify-content: space-around;
    display: flex;
    flex-direction: row;
    list-style: none;
}
nav a {
    border-radius: 1.5rem;
    /*color: var(--fog-gray);*/
    text-decoration: none;
    font-weight: 500;
    padding: 10px;
    transition: all 0.3s;
}
nav li {
    text-decoration: none;
    animation: fadeIn 0.8s ease-in;
    animation-fill-mode: both;
}
nav li:nth-child(1) { animation-delay: 0.1s; }
nav li:nth-child(2) { animation-delay: 0.2s; }
nav li:nth-child(3) { animation-delay: 0.3s; }
nav li:nth-child(4) { animation-delay: 0.4s; }

h3{
    padding-top: 2rem;
}

article {
    width: 200px;
    border: 3px solid var(--medium-blue);
    background-color: var(--dark-blue);
    padding: 20px;
    margin-left: 20px;
    border-radius: 20px;
    flex: 1 1 40%;
    min-width: 180px;
}
.container {
    gap:1rem;
    margin: 50px;
    display: flex;
    flex-wrap: wrap;
    flex: 0 1 230px;
    min-width: 230px;
}
article:hover{
    transform:translate(0,-2px) scale(1.01,1.01);
    transition: transform .3s;

}
form > label{
    color: var(--fog-gray)
}

footer{
    background:var(--dark-blue);
    padding: 10px;
    border-top: solid var(--tower-gold);
    margin-top: 1rem;
}

button{
    background: var(--dark-blue);
    color: var(--city-light);
    border-radius: 4px;
    padding: 0.5rem 1rem;
}

#calcImg{
    border: 3px solid var(--medium-blue);
    border-radius:5%;
    width: 180px;

}
.circleImage{
    border-radius: 100px;
    display: inline;
    float: right;
    margin-right: 2rem;
}

button:hover{
    background: #192139;
    color:var(--tower-gold);
}
li:hover{color:var(--fog-gray);}
li > a:hover {
    border-radius: 1.5rem;
    color: var(--tower-gold);
    padding: 10px;
    text-decoration: underline;
    background: #192139;
 }

a{color: var(--fog-gray);}
a:active { color: darkorange; }
a:focus { outline: 2px solid var(--fog-gray);}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 1rem;
        padding: 0.5rem 0;
    }
    .container {
        flex-direction: column;
        margin: 5px;
    }
    main {
        margin: 0;
    }
    h1 {
        font-size: medium;
    }
    h3 {
        padding-top: 0;
        font-size: small;
    }
    p{
        margin: 5px;
    }
    header {
        padding: 3rem 0 5rem;
    }
    article {
        width: 90%;
        flex: 1 1 90%;
        min-width: 80%;
        border: 0 solid var(--medium-blue);
        background-color: var(--night-blue);
    }
    .circleImage{
        display: none;
    }
    article:hover{
        transform:translate(0,0) scale(1,1);
        transition: transform .5s;
    }

}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}