body {
    min-height: 100vh;
    margin: 0;
}
@keyframes linkBackground {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position:100% 50%; }
}
:root {
    --darkColor1: #5F7441;
    --darkenDarkColor1: #3e5320;
    --darkColor2: #0007BF;
    --clearColor1: white;
    --clearColor2: #d2ebf3;
}
.principal {
    width: 100vw;
    min-height: 94vh;
    height: fit-content;
    display: flex;
    justify-content: center;
    align-items: center;
}
label, input, textarea {
    font-size: 1rem!important;
}
p {
    height: fit-content;
    font-size: 1rem;
    margin: 1rem;
}
h1 {
    font-family: "Science Gothic", sans-serif;
    font-size: 3rem;
    font-weight: 400;
    margin: 0;
}
h2 {
    font-size: 2rem;
    color: var(--clearColor1);
}
.a-clear {
    text-decoration: none;
    color: var(--clearColor1);
    margin: 0 -3px;
    padding: 2px 6px;
    background-image: linear-gradient(120deg, var(--clearColor2) 0%, var(--clearColor1) 50%, var(--darkColor1));
    background-repeat: no-repeat;
    background-size: 400% 0.08em;
    background-position: 0 100%;
    transition: background-size 0.5s ease-in-out;   
    &:hover {
        background-size: 400% 88%;
        animation: linkBackground 20s ease infinite;
        color: black;
        text-decoration: underline;
    }
}
.a-dark {
    text-decoration: none;
    color: var(--darkenColor1);
    margin: 0 -3px;
    padding: 2px 6px;
    background-image: linear-gradient(120deg, var(--darkColor1) 0%, #adb4c4 50%, var(--darkColor2));
    background-repeat: no-repeat;
    background-size: 400% 0.08em;
    background-position: 0 100%;
    transition: background-size 0.5s ease-in-out;   
    &:hover {
        background-size: 400% 88%;
        animation: linkBackground 20s ease infinite;
        color: var(--clearColor1);
        text-decoration: underline;
    }
}
.interactiveImage {
    cursor: pointer;
    transition: 0.5s all;
}
.interactiveImage:hover {
    transform: scale(1.1);
}
html {
    line-height: 1.6;
    font-family: "Alumni Sans SC", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
}
.div-image {
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
header {
    background: var(--darkColor1);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 10vh;
}
header::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("../images/texture.png");
    background-size: cover;
    background-position: center;
    opacity: 0.5; /* opacité réelle de l’image */
    height: 10vh;
}
header a,
header a:visited {
    font-size: 1.3rem;
    color: var(--clearColor1);
}
header > div {
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    min-width: 30%;
}
header a:hover {
    color: black;
}
header > div > div {
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}
footer {
    background-color: var(--darkColor1);
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 6vh;
}
footer > p {
    margin: 0;
    text-align: center;
}