:root {
    --primary-color: #202321;
    --secondary-color: #737871;
    --accent-color: #8e3828;
    --bg-color: #f4f1eb;
    --white: #fbfaf7;
    --line-color: #c9c8c0;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    overflow-x: hidden;
    background: var(--bg-color);
    color: var(--primary-color);
    font-family: 'Manrope', sans-serif;
    font-size: 15px;
    line-height: 1.55;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: .18;
    background-image: linear-gradient(rgba(32, 35, 33, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(32, 35, 33, .035) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(to bottom, black, transparent 80%);
}

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

button,
select {
    font: inherit;
}

header {
    max-width: 1240px;
    margin: 0 auto 3rem;
    padding: 0 36px;
    border-bottom: 1px solid var(--line-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    min-height: 112px;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--primary-color);
    white-space: nowrap;
}

.logo img {
    display: block;
    width: 82px;
    height: 82px;
    object-fit: contain;
}

.logo span {
    font: 700 29px/.9 'Oswald', sans-serif;
    letter-spacing: .01em;
    text-transform: uppercase;
}

.logo-tagline {
    color: var(--secondary-color);
    font: 500 10px/1.3 'DM Mono', monospace;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.logo-tagline span {
    color: var(--accent-color);
}

nav {
    display: flex;
    justify-content: flex-end;
}

nav ul {
    display: flex;
    align-items: center;
    gap: 22px;
    margin: 0;
    padding: 0;
    list-style: none;
}

nav a {
    color: var(--primary-color);
    font: 500 11px 'DM Mono', monospace;
    letter-spacing: .04em;
    text-transform: uppercase;
}

nav a:hover {
    color: var(--accent-color);
}

.page-wrapper {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 36px;
}

footer {
    max-width: 1240px;
    margin: 5rem auto 0;
    padding: 0 36px 34px;
    border-top: 1px solid var(--primary-color);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: start;
    padding-top: 22px;
    color: var(--secondary-color);
    font: 500 10px/1.4 'DM Mono', monospace;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand img {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

.footer-brand strong,
.footer-brand span {
    display: block;
}

.footer-brand strong {
    color: var(--primary-color);
    font: 600 18px/.95 'Oswald', sans-serif;
    letter-spacing: .02em;
}

.footer-brand span {
    margin-top: 5px;
}

.footer-links {
    display: flex;
    gap: 22px;
    padding-top: 8px;
}

.footer-links a {
    color: var(--accent-color);
}

.footer-copy {
    grid-column: 1 / -1;
    margin: 8px 0 0;
}

.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    z-index: 10;
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--primary-color);
    background: var(--bg-color);
    color: var(--primary-color);
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    header {
        margin: 0 20px 2rem;
        padding: 0;
    }

    .header-container {
        min-height: 86px;
    }

    .logo img {
        width: 58px;
        height: 58px;
    }

    .logo span {
        font-size: 24px;
    }

    .logo-tagline {
        display: none;
    }

    nav ul {
        gap: 14px;
    }

    nav a {
        font-size: 10px;
    }

    .page-wrapper {
        padding: 0 20px;
    }

    footer {
        margin-top: 4rem;
        padding: 0 20px 28px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .footer-copy {
        grid-column: auto;
    }
}