/* ==============================
   CONFIGURATION GENERALE
============================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #080808;
    color: #ffffff;
}


/* ==============================
   ACCUEIL / BACKGROUND
============================== */

.hero {
    width: 100%;
    min-height: 700px;
    height: 100vh;

    background-image: url("assets/background.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}


/* LOGO */

.logo {
    width: 520px;
    max-width: 85%;
    height: auto;

    border-radius: 50%;
    object-fit: contain;

    filter: drop-shadow(0 10px 25px rgba(0,0,0,0.4));
}


/* ==============================
   SECTION PETITION
============================== */

.petition {
    background: #ffffff;
    color: #080808;

    padding: 110px 8%;
    text-align: center;
}

.container {
    max-width: 1000px;
    margin: auto;
}

.petition h1 {
    font-size: clamp(35px, 5vw, 65px);
    font-weight: 1000;
    letter-spacing: -2px;

    margin-bottom: 70px;
}


/* TEXTE DE LA PETITION */

.petition-text {
    text-align: left;

    font-size: 20px;
    line-height: 1.9;
    font-weight: 500;

    margin-bottom: 65px;
}

.petition-text p {
    margin-bottom: 30px;
}


/* ==============================
   BOUTONS
============================== */

.btn {
    display: inline-block;

    padding: 22px 45px;

    font-size: 19px;
    font-weight: 900;
    text-decoration: none;

    border-radius: 4px;

    transition: all 0.25s ease;
}


/* BOUTONS ROUGES */

.btn-red {
    background: #ed1717;
    color: #ffffff;
}

.btn-red:hover {
    background: #b80000;
    transform: translateY(-4px);

    box-shadow: 0 10px 25px rgba(237,23,23,0.25);
}


/* ==============================
   GOOGLE FORMS
============================== */

.participation {
    background: #ffffff;
    color: #080808;

    padding: 100px 20px 130px;
    text-align: center;
}

.participation h2 {
    font-size: clamp(28px, 4vw, 45px);
    font-weight: 900;

    margin-bottom: 30px;
}

.participation p {
    font-size: 18px;
    line-height: 1.7;

    margin-bottom: 45px;
}


/* ==============================
   FOOTER / INSTAGRAM
============================== */

.footer {
    background: #080808;
    color: #ffffff;

    padding: 110px 20px 45px;
    text-align: center;
}

.footer h2 {
    font-size: clamp(55px, 9vw, 100px);
    font-weight: 1000;

    letter-spacing: -4px;

    margin-bottom: 65px;
}


/* BOUTON INSTAGRAM */

.btn-instagram {
    background: #ed1717;
    color: #ffffff;

    min-width: 280px;
}

.btn-instagram:hover {
    background: #b80000;
    transform: translateY(-4px);
}


/* COPYRIGHT */

.copyright {
    margin-top: 110px;

    color: #777777;
    font-size: 12px;
    font-weight: 700;

    letter-spacing: 2px;
}


/* ==============================
   VERSION MOBILE
============================== */

@media screen and (max-width: 768px) {

    .hero {
        min-height: 550px;
        height: 80vh;
    }

    .logo {
        width: 340px;
    }

    .petition {
        padding: 75px 7%;
    }

    .petition h1 {
        margin-bottom: 45px;
    }

    .petition-text {
        font-size: 17px;
        line-height: 1.8;
    }

    .btn {
        width: 100%;
        max-width: 400px;

        padding: 20px 15px;
        font-size: 16px;
    }

    .participation {
        padding: 75px 7% 100px;
    }

    .footer {
        padding-top: 80px;
    }

    .footer h2 {
        letter-spacing: -2px;
    }

    .copyright {
        margin-top: 80px;
        line-height: 1.8;
    }
}


/* =====================================
   CIEL ETOILE ANIME - NPEM
===================================== */

/* Fond de la pétition */

.petition {
    position: relative;
    overflow: hidden;
    background: #05070d;
    color: white;
}

/* Couche des étoiles */

.starfield {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;

    background-image:
        radial-gradient(2px 2px at 10% 20%, white 99%, transparent),
        radial-gradient(1px 1px at 25% 70%, white 99%, transparent),
        radial-gradient(2px 2px at 40% 35%, white 99%, transparent),
        radial-gradient(1px 1px at 55% 80%, white 99%, transparent),
        radial-gradient(2px 2px at 70% 15%, white 99%, transparent),
        radial-gradient(1px 1px at 85% 55%, white 99%, transparent),
        radial-gradient(2px 2px at 95% 85%, white 99%, transparent),
        radial-gradient(1px 1px at 15% 90%, white 99%, transparent);

    background-size: 350px 350px;
    animation: starTwinkle 5s ease-in-out infinite alternate;
}

/* Protection du texte */

.petition .container {
    position: relative;
    z-index: 2;
}

/* Etoiles filantes */

.starfield::before,
.starfield::after {
    content: "";
    position: absolute;

    width: 150px;
    height: 2px;

    background: linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,0.9),
        white
    );

    border-radius: 50%;
    opacity: 0;

    transform: rotate(-35deg);
    filter: drop-shadow(0 0 5px white);

    animation: shootingStar 7s linear infinite;
}

/* Première étoile filante */

.starfield::before {
    top: 15%;
    left: 80%;
    animation-delay: 1s;
}

/* Deuxième étoile filante */

.starfield::after {
    top: 55%;
    left: 65%;
    animation-delay: 4s;
    animation-duration: 9s;
}

/* Animation des étoiles */

@keyframes starTwinkle {
    from {
        opacity: 0.45;
    }

    to {
        opacity: 1;
    }
}

/* Animation des étoiles filantes */

@keyframes shootingStar {

    0% {
        opacity: 0;
        transform: translate(0, 0) rotate(-35deg);
    }

    5% {
        opacity: 1;
    }

    15% {
        opacity: 0;
        transform: translate(-650px, 450px) rotate(-35deg);
    }

    100% {
        opacity: 0;
        transform: translate(-650px, 450px) rotate(-35deg);
    }
}

/* Respect des préférences d'animation */

@media (prefers-reduced-motion: reduce) {
    .starfield,
    .starfield::before,
    .starfield::after {
        animation: none;
    }
}