:root {
    --bgcolor: #050505;
    --dark-color: #181F2B;
    --header-color: #16335d;
    --button: #0b387b;
    --other: #0b549a;
    --background: #2f2f2f;
    --background-dark: #252525;
    --bg-darker: #131313;
}

body {
    display: flex;
    flex-direction: column;
    font-family: 'Noto Sans', sans-serif;
    margin: 0;
    padding: 0;
    overflow-y: auto;
    overflow-x: hidden;
    background-image: linear-gradient(150deg, var(--background-dark), var(--bgcolor));
    background-size: contain;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: white;
    text-shadow: black 2px 2px 13px;
    letter-spacing: 0.03rem;
    min-height: 100vh;
}

#Titre {
    text-align: center;
}

#head {
    width: 100%;
    font-size: 0.8rem;
    background-color: var(--header-color);
    background-image: url("https://www.transparenttextures.com/patterns/dark-stripes.png");
    padding: 7px 0;
    text-align: center;
    z-index: 10;
    top: 0;
    opacity: 0;
    transform: translateY(0);
    transition: opacity 0.3s, transform 0.4s;
}

#nav {
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    font-size: 1.4rem;
    position: relative;
    opacity: 0;
    transition: opacity 0.8s, top 1s;
    transform: rotate(-0.2deg) translate(0, 1.2rem);
}

nav a {
    transform: rotate(0deg);
    display: inline-block;
    padding: 10px 15px;
    margin: 5px;
    margin-left: 2rem;
    margin-right: 2rem;
    border-radius: 6px;
    border: #1f1f1f solid 3px;
    font-size: 1.4rem;
    white-space: nowrap;
    position: relative;
    color: white;
    transition: transform 0.3s, font-size 0.3s, background-color 0.3s, color 0.3s, background-position 0.3s;
    background: linear-gradient(to top right, var(--background-dark) 50%, var(--button) 50%);
    background-size: 200% 200%;
    background-position: bottom left;
    text-shadow: black 2px 2px 10px;
    box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.42);
    opacity: 80%;
    font-weight: bold;
}

nav a:hover {
    background-position: top right;
}

.github-icon {
    transition: height 0.3s;
    padding-right: 0.5rem;
    height: 1.3rem;
    filter: invert(1);
    transition: height 0.3s;
}

nav a:hover .github-icon {
    scale: 1.2;
    color: var(--other);
    transition: scale 0.2s;
}

#title {
    opacity: 0;
    transition: opacity 0.8s;
    transform: rotate(-0.2deg) translate(0, 8px);
    font-weight: bold;
}

#main {
    flex: 1;
    opacity: 0;
    padding: 20px;
    transition: none;
}

#presentation {
    width: 70%;
    margin: auto;
    margin-top: 1rem;
}

#presentation h1 {
    font-size: 1rem;
}

#presentation p {
    width: 90%;
    font-size: 1.4vw;
    margin: auto;
    text-align: justify;
}

footer {
    text-align: center;
    padding: 0;
    margin-bottom: 0;
    background-color: var(--other);
    background-image: url("https://www.transparenttextures.com/patterns/darth-stripe.png");
    color: #ffffff;
    font-size: 1.4rem;
    position: sticky;
    bottom: 0;
    width: 100%;
    transform: rotate(0deg);
    text-shadow: black 2px 2px 20px;
}

footer p {
    transform: rotate(0deg);
    padding: 10px;
    margin: 5px;
}

.Download img {
    height: 1.7rem;
    margin-right: 1rem;
}

.Download a {
    transform: translate(0, -5px);
}

.Download {
    display: flex;
    flex-direction: row;
    align-items: center;
    transform: rotate(1deg) translate(0, -15px);
}

footer h5 {
    margin: 0.7rem 0;
}

footer a {
    color: #c5f4ff;
    font-size: 1.4rem;
    display: inline-block;
    transition: transform 0.2s, font-size 0.2s;
}

footer a:hover {
    color: var(--other);
    font-size: 1.6rem;
}

a {
    text-decoration: none;
    color: white;
}

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background-color: var(--dark-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--header-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--other);
}