*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

body {
    height: 100vh;
    background-color: black;
    background-image: url("img/entete_1000x560.jpg");
    backdrop-filter: blur(1px);
    background-size: cover;
    background-position: center;
}

li{
    list-style: none;
}

a {
    text-decoration: none;
    color: white;
    font-size: 1rem;
}

a:hover {
    color: rgb(44, 221, 17);
}

/* header */

header {
    position: relative;
    padding: 0 2rem;
}

.navbar {
    width: 100%;
    height: 60px;
    
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar .logo a {
    font-size: 1rem;
    font-weight: bold;
}

.navbar .logo a img {
    width: 25%;
    height: 25%;
}

.navbar .links {
    display: flex;
    gap: 2rem;
}

.navbar .toggle_btn {
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
    display: none;
}

.action_btn {
    background-color: rgb(44, 221, 17);
    color: #ffffff;
    padding: 0.5rem 1rem;
    border: none;
    outline: none;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    cursor: pointer;
    transition: scale 0.2 ease;
}

.action_btn:hover {
    scale: 1.05;
    color: #ffffff;
}

.action_btn:active {
    scale: 0.95;
}

/* dropdown menu */

.dropdown_menu {
    display: none;
    position: absolute;
    right: 2rem;
    top: 60px;
    height: 0;
    width: 300px;
    background:rgb(76 75 75 / 81%);
    backdrop-filter: blur(15px);
    border-radius: 10px;
    overflow: hidden;
    transition: height 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.dropdown_menu.open {
    height: 240px;
}

.dropdown_menu li {
    padding: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dropdown_menu .action_btn {
    width: 100%;
    display: flex;
    justify-content: center;
}

/* hrro */

div#herologo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width : 150px;
    height : 150px;
}

section#herologo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width : 150px;
    height : 150px;
}

section#hero {
    height: calc(85vh - 60px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #ffff;
}

#hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* responsive design */

@media(max-width: 992px) {
    .navbar .links,
    .navbar .action_btn {
        display: none;
    }

    .navbar .toggle_btn {
        display: block;
    }
    
    .dropdown_menu {
        display: block;
    }
}
@media(max-width: 576px) {
    .dropdown_menu {
        left: 2rem;
        width: unset;
    }
}