@import url('https://fonts.googleapis.com/css2?family=Zalando+Sans+Expanded:ital,wght@0,200..900;1,200..900&family=Zalando+Sans:ital,wght@0,200..900;1,200..900&display=swap');

:root {
    --link-color: #113338;
    --link-hover-color: #113338;
    --button-hover-color: #113338;
    --nav-link-hover-bg: #e4e4e4;
}

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

body,
html {
    font-family: "Zalando Sans", sans-serif;
    scroll-behavior: smooth;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    transition: 0.2s ease-in-out;
}

/* Header/nav */
header {
    background: white;
    color: #222;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 3;
    box-shadow: 0px 5px 20px 5px rgba(0, 0, 0, 0.1);
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: "Zalando Sans Expanded", sans-serif;
}

.logo img {
    height: 80px;
    width: auto;
    display: block;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: flex-end;
}

nav a {
    color: var(--link-color);
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: bold;
    padding: 12px 24px;
    transition: background 0.2s ease;
}

nav a:hover {
    color: var(--link-hover-color);
    background-color: var(--nav-link-hover-bg);
}

/* Button */
.btn {
    background: var(--link-color);
    padding: 0.8rem 1.5rem;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    transition: background 0.2s ease;
    display: inline-block;
}

.btn:hover {
    background: var(--button-hover-color);
}

/* Section common */
.section {
    padding: 3rem 0;
    scroll-margin-top: 100px;
}

.section h2 {
    padding-bottom: 24px;
}

.section p,
.section ul {
    width: 90%;
    margin: auto;
}

.section.light {
    background: #ebebeb;
}

/* Footer */
footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-flex {
        flex-direction: row;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-flex .logo img {
        height: 40px;
    }

    .header-flex text {
        font-size: 12px;
    }

    nav {
        width: 100%;
        margin: auto;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    nav a {
        padding: 12px 0;
        font-size: 1rem;
        width: 100%;
    }

    nav #section-btn {
        display: none;
    }

    .btn {
        font-size: 1rem;
        padding: 0.6rem 1.2rem;
    }

    footer {
        font-size: 0.9rem;
    }
}