/* ARCH 1.0 page styles. Built to ARCH. */

:root {
    --bg: #fafaf8;
    --fg: #1a1a1a;
    --accent: #AD71F2;
    --link: #7530B5;
    --muted: #6a6a6a;
    --rule: #e0e0d8;
    --code-bg: rgba(0, 0, 0, 0.04);
    --font-serif: 'Crimson Pro', Georgia, 'Times New Roman', serif;
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, Consolas, monospace;
    --measure: 90ch;
    --gutter: clamp(1rem, 3vw, 2rem);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #15151a;
        --fg: #e8e8e0;
        --link: #AD71F2;
        --muted: #9a9a9a;
        --rule: #3a3a40;
        --code-bg: rgba(255, 255, 255, 0.06);
    }
}

* {
    box-sizing: border-box;
}

html {
    font-size: clamp(16px, 0.5vw + 14px, 18px);
    background: var(--bg);
    color: var(--fg);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    line-height: 1.6;
}

main {
    max-width: var(--measure);
    padding: clamp(2rem, 5vw, 4rem) var(--gutter) clamp(3rem, 6vw, 5rem);
    margin: 0 auto;
}

article > * + * {
    margin-top: 1.25em;
}

article > h2 + *,
article > h3 + * {
    margin-top: 0.6em;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.005em;
    color: var(--fg);
    margin: 0;
}

h1 {
    font-size: clamp(2rem, 4vw + 1rem, 3rem);
    line-height: 1.1;
    margin-bottom: 0.25em;
}

h1::after {
    content: ".";
    color: var(--accent);
}

h2 {
    font-size: clamp(1.4rem, 1.5vw + 1rem, 1.75rem);
    margin-top: 2em;
}

h3 {
    font-size: clamp(1.15rem, 0.8vw + 1rem, 1.3rem);
    margin-top: 2em;
    color: var(--fg);
}

p {
    font-family: var(--font-sans);
    line-height: 1.65;
    margin: 0;
}

ul, ol {
    padding-left: 1.5em;
    margin: 0;
}

li {
    margin: 0;
}

li + li {
    margin-top: 0.4em;
}

li > ul,
li > ol {
    margin-top: 0.4em;
}

a {
    color: var(--link);
    text-decoration: underline;
    text-underline-offset: 0.18em;
    text-decoration-thickness: 0.075em;
}

a:hover {
    background: rgba(117, 48, 181, 0.10);
}

a:focus-visible {
    outline: 2px solid var(--link);
    outline-offset: 2px;
    border-radius: 2px;
}

code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--code-bg);
    padding: 0.1em 0.35em;
    border-radius: 3px;
    word-break: break-word;
}

pre {
    margin: 0;
    overflow-x: auto;
}

pre code {
    display: block;
    padding: 1em 1.25em;
    border-radius: 4px;
    line-height: 1.5;
}

hr {
    border: 0;
    height: 1px;
    background: var(--rule);
    margin: clamp(2rem, 4vw, 3.5rem) 0;
}

blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1.25em;
    color: var(--muted);
    font-style: italic;
    margin: 0;
}

strong {
    font-weight: 600;
}

em {
    font-style: italic;
}

article > p:first-of-type {
    color: var(--muted);
    font-size: 0.95em;
}

.arch-footer {
    margin-top: clamp(3rem, 6vw, 5rem);
    padding-top: 1.5rem;
    border-top: 1px solid var(--rule);
    color: var(--muted);
    font-size: 0.875em;
}

.arch-footer p {
    margin: 0;
}

.arch-footer a {
    color: var(--muted);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.arch-footer a:hover {
    color: var(--accent);
    background: transparent;
}

@media print {
    html, body {
        background: white;
        color: black;
    }
    main {
        max-width: none;
        padding: 1rem;
    }
    a {
        color: inherit;
        text-decoration: underline;
    }
    h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    pre, blockquote, table, figure {
        page-break-inside: avoid;
    }
    .arch-footer {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}