:root {
    --color-bg: hsl(60 15% 94%);
    --color-primary: hsl(150 30% 23%);
    --color-secondary: hsl(150 5% 50%);
    --color-faint: hsl(60 15% 85%);
    --spacing-xs: 1rem;
    --spacing-sm: 1.5rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --line-height-body: 1.5;
    --line-height-headings: 1;
}

html {
    background: var(--color-bg);
    background-image: radial-gradient(
        circle,
        var(--color-faint) 1px,
        transparent 1px
    );
    background-size: 12px 12px;
    font-size: 1rem;
}

/* Normalize */

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

/* Common */

p {
    margin-bottom: var(--spacing-xs);
}

ul {
    margin-left: var(--spacing-md);
}

hr {
    border: none;
    margin: var(--spacing-md) 0;
    height: 2px;
    background: var(--color-faint);
}

blockquote {
    padding: var(--spacing-md);
    color: hsl(60 5% 30%);
    font-size: 15px;
    font-style: italic;
    background: rgba(0, 0, 0, 0.04);
    margin: var(--spacing-md) 0;
}

@media only screen and (max-width: calc(600px + 2rem)) {
    blockquote {
        padding: var(--spacing-sm);
    }
}

.next-page-button {
    font-family: Work Sans, Helvetica, sans-serif;
    text-transform: uppercase;
    text-decoration: none;
}

blockquote .attribution {
    font-size: 14px;
    margin-bottom: 0;
}

address {
    font-style: normal;
    margin: var(--spacing-md) 0;
}

address .contact-name {
    display: block;
}

/* Sections */

body {
    background: var(--color-bg);
    color: var(--color-primary);
    font-family: Inter, Helvetica, sans-serif;
    line-height: var(--line-height-body);
    margin: auto;
    max-width: 600px;
    padding: var(--spacing-lg) var(--spacing-md)
}

@media only screen and (max-width: calc(600px + 2rem)) {
    body {
        padding: 0 var(--spacing-xs) var(--spacing-md);
    }
}

header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

header nav {
    display: flex;
    gap: 1rem;
}

@media only screen and (max-width: calc(600px + 2rem)) {
    header nav {
        flex-direction: column;
        gap: 0;
    }
}

main {
    margin-bottom: var(--spacing-lg);
}

main nav:has(.next-page-button) {
    margin-top: var(--spacing-lg);
    text-align: right;
}

main section {
    margin: var(--spacing-md) 0;
}

footer {
    margin-top: var(--spacing-lg);
}

/* Headings */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 500;
    line-height: var(--line-height-headings);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    font-family: "Work Sans", Helvetica, sans-serif;
}

h1 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

/* Links */

a {
    color: var(--color-primary);
}

header nav a {
    display: inline-block;
    color: var(--color-secondary);
    font-family: "Work Sans", Helvetica, sans-serif;
    text-decoration: none;
    text-transform: uppercase;
}

header nav a.active {
    color: var(--color-primary);
}

/* Images */

.image-wrapper {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.04);
    margin: var(--spacing-md) 0;
}

.image-wrapper:has(small) {
    padding-bottom: var(--spacing-xs);
}

@media only screen and (max-width: calc(600px + 2rem)) {
    .image-wrapper {
        padding: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
    }
}

.image-wrapper > img {
    width: 100%;
    height: auto;
    object-fit: cover;
    opacity: 0.95;
    background: rgba(0, 0, 0, 0.04);
}

.image-wrapper > small {
    text-align: right;
    padding-top: var(--spacing-xs);
}