:root {
    /* --white: #F5F5FA; */
    --white: #FFFFFF;
    --black: #334155;
    --gray: #F5F5F5;
    --red: #CF220B;
    --bleu-clair: #CAE3FF;
    --bleu-clair-transparent: rgba(202, 227, 255, 0.4);
    --bleu-clair-transparent-2: rgba(202, 227, 255, 0.6);
    --bleu-moyen: #94B4DA;
    --bleu-fonce: #0052B1;
    --regular: 500;
    --semi-bold: 700;
}

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

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

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style-position: inside;
}

button, select {
    all: unset;
    cursor: pointer;
    font-family: inherit;
    user-select: none;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    background-color: var(--white);
    color: var(--black);
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 120px 0px;
}

.logo {
    font-family: 'Indie Flower', cursive;
    background: linear-gradient(to right, var(--bleu-fonce), #94B4DA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    /* Pour Firefox */
    background-clip: text;
    color: transparent;
}

h1 {
    font-size: 24px;
    font-weight: bold;
    color: var(--bleu-fonce);
    width: 100%;
}

main section {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 1s ease-out, transform 0.6s ease-out;
    will-change: opacity, transform;
}

main section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- DESKTOP (grand écran) --- */
@media screen and (min-width: 769px) {
    main {
        padding-top: 150px;
    }

    h1 {
        font-size: 36px;
        color: var(--bleu-fonce);
    }
}


/* Animation background */
.area{
    position: fixed;
    z-index: -2;
    width: 100%;
    height:100vh;
    
   
}

.circles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: var(--bleu-clair-transparent-2);
    animation: animate 15s linear infinite;
    bottom: -150px;
    
}

.circles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}


.circles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.circles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}

.circles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
}

.circles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
}

.circles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
}

.circles li:nth-child(7){
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
}

.circles li:nth-child(8){
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.circles li:nth-child(9){
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.circles li:nth-child(10){
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;
}



@keyframes animate {

    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }

    100%{
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0.3;
        border-radius: 50%;
    }

}