:root {
    --main-background: #f9f9f9;
    --secondary-background: #F6F6F6;
    --border-color: #D3D3D3;
    --blue: #3853CD;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--main-background);
}

* {
    font-family: "Roboto", sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

a {
    text-decoration: none;
}

a:hover {

}

p, h1, h2, h3, h4, h5, h6 {
    margin: 0;
}

button {
    cursor: pointer;
}

button:hover, a:hover {
    opacity: 0.75;
}

.display-none {
    display: none;
}

.display-none-imp {
    display: none !important;
}

.container {
    width: 100%;
    margin: 0 auto;
    max-width: 1320px;
}

#navigation {
    background-color: var(--secondary-background);
    display: flex;
    align-items: center;
    height: 75px;
    border-bottom: 1px solid var(--border-color);
}

#navigation img {
    height: 23px;
    margin-top: 5px;
}

#navigation #navigation_content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#navigation #navigation_content #nav_buttons {
    display: flex;
    align-items: center;

}

#navigation #navigation_content #nav_buttons a {
    margin: 0 15px;
    color: black;
    font-size: 16px;
}

#navigation #navigation_content a.register_btn {
    border-radius: 15px;
    background-color: var(--blue);
    color: white;
    padding: 12px 20px;
}

#base_content {
    min-height: calc(100vh - 76px - 168px); /* navbar+border and part of footer */
}

#footer {
    background-color: var(--blue);
    height: 168px;
    display: flex;
    align-items: center;
}

#footer #footer_content {
    display: flex;
    justify-content: center;
}

#footer #footer_content #footer_links {
    display: flex;
    align-items: center;
    gap: 40px;
}

#footer #footer_content #footer_links a {
    color: white;
    font-size: 16px;
    font-weight: 300;
}

#footer p.copyright_claim {
    color: white;
    text-align: center;
    margin-top: 35px;
    font-size: 12px;
}

@media (max-width: 1400px) {
    .container {
        max-width: 1140px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 990px) {
    .container {
        max-width: 720px;
    }
}

@media (max-width: 767px) {
    .container {
        max-width: 540px;
    }
}

@media (max-width: 567px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }

    #footer #footer_content #footer_links {
        flex-direction: column;
        gap: 15px;
    }

    #navigation #navigation_content #nav_buttons {
        display: none;
    }

    #footer p.copyright_claim {
        margin-top: 15px;
    }
}