/* The DiamaneOS website's type, colours and spacing (its assets/css/site.css),
 * with styles for the installer's controls. */

/* The website's Latin subset of Sofia Sans. Other characters fall back to the
 * system font. */
@font-face {
    font-family: "Sofia Sans";
    src: url("fonts/SofiaSans-latin-wght.woff2") format("woff2");
    font-weight: 1 1000;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0000-017F, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    color-scheme: light dark;
    --bg: #f6f3ef;
    --ink: #1d1b19;
    --muted: #5e5952;
    --outline: #7c7670;
    --line: #d1cbc4;
    --accent: #8a5100;
    --lamp: #fba700;
    --code-bg: #ebe8e4;
    --error: #b12c28;
    --w-body: 400;
    --font: "Sofia Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
    --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    --measure: 40rem;
    --gutter: clamp(1rem, 4vw, 2rem);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #100e0b;
        --ink: #ebe8e4;
        --muted: #c0bbb3;
        --outline: #908b84;
        --line: #46413b;
        --accent: #ffb956;
        --code-bg: #2c2a27;
        --error: #ffb4aa;
        --w-body: 380;
    }
}

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

[hidden] {
    display: none !important;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 1.08rem;
    line-height: 1.6;
    font-weight: var(--w-body);
    letter-spacing: -0.0125em;
    overflow-wrap: break-word;
    -webkit-font-smoothing: antialiased;
}

h1,
h2 {
    margin: 0;
    font-weight: 560;
    line-height: 1.2;
    text-wrap: balance;
}

h1 {
    font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.3rem;
}

p,
ul,
ol {
    margin: 0;
}

h1 a,
h2 a {
    color: inherit;
    text-decoration: none;
}

a {
    color: var(--accent);
    text-underline-offset: 0.18em;
    text-decoration-thickness: 1px;
}

a:hover {
    text-decoration-thickness: 2px;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

main:focus {
    outline: none;
}

code,
pre {
    font-family: var(--mono);
    font-size: 0.88em;
    letter-spacing: 0;
}

code {
    padding: 0.1em 0.3em;
    border-radius: 4px;
    background: var(--code-bg);
}

pre {
    margin: 0;
    padding: 1rem;
    border-radius: 4px;
    background: var(--code-bg);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.wrap {
    max-width: calc(var(--measure) + 2 * var(--gutter));
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.skip {
    position: absolute;
    left: 0.5rem;
    top: -3rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg);
    color: var(--ink);
}

.skip:focus {
    top: 0.5rem;
}

/* header */

.site-header {
    border-bottom: 1px solid var(--line);
}

.header-in {
    display: flex;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.lockup {
    display: block;
    height: 24px;
    width: auto;
}

.lockup .b-sheet,
.lockup .b-name,
.lockup .b-suffix,
.lockup .b-bond {
    fill: var(--ink);
}

@media (prefers-color-scheme: dark) {
    .lockup .b-suffix {
        fill: var(--muted);
    }

    .lockup .b-bond {
        fill: var(--lamp);
    }
}

/* page */

main {
    display: block;
    max-width: calc(var(--measure) + 2 * var(--gutter));
    margin: 0 auto;
    padding: 2.5rem var(--gutter) 3rem;
}

main > * + *,
section > * + *,
details > * + * {
    margin-top: 1rem;
}

main > section,
main > nav,
main > details {
    margin-top: 2.25rem;
    scroll-margin-top: 1rem;
}

main > h1 + p {
    margin-top: 1.25rem;
}

section > h2 + * {
    margin-top: 0.75rem;
}

ul {
    padding-left: 1.2rem;
}

li + li {
    margin-top: 0.5rem;
}

li::marker {
    color: var(--muted);
}

.toc {
    padding: 1rem 1.25rem;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.toc h2 {
    font-size: 1rem;
}

.toc ul {
    margin-top: 0.5rem;
    padding-left: 1.3rem;
}

.toc li + li {
    margin-top: 0.2rem;
}

/* controls */

button {
    min-height: 48px;
    padding: 0.6rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: var(--bg);
    font: inherit;
    font-weight: 560;
    letter-spacing: inherit;
    cursor: pointer;
}

button:enabled:hover {
    background: var(--ink);
    border-color: var(--ink);
}

button:disabled {
    background: var(--code-bg);
    border-color: var(--code-bg);
    color: var(--muted);
    cursor: not-allowed;
}

input[type="file"] {
    max-width: 100%;
    font: inherit;
    letter-spacing: inherit;
    color: var(--muted);
}

input[type="file"]::file-selector-button {
    min-height: 44px;
    margin-right: 0.75rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--outline);
    border-radius: 4px;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-weight: 560;
    cursor: pointer;
}

input[type="file"]::file-selector-button:hover {
    border-color: var(--ink);
}

input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    margin: 0 0.4rem 0 0;
    vertical-align: -0.15em;
    accent-color: var(--accent);
}

progress {
    width: 100%;
    max-width: 30rem;
    height: 0.5rem;
    margin-top: 0.5rem;
    border: 0;
    border-radius: 4px;
    background: var(--line);
    appearance: none;
}

progress::-webkit-progress-bar {
    border-radius: 4px;
    background: var(--line);
}

progress::-webkit-progress-value {
    border-radius: 4px;
    background: var(--accent);
}

progress::-moz-progress-bar {
    border-radius: 4px;
    background: var(--accent);
}

summary {
    padding: 0.25rem 0;
    font-size: 1.3rem;
    font-weight: 560;
    line-height: 1.2;
    cursor: pointer;
}

summary::marker {
    color: var(--muted);
}

details p {
    color: var(--muted);
}

.error-text {
    color: var(--error);
}

/* footer */

.site-footer {
    padding: 1.5rem 0 2.5rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.88rem;
}

.site-footer p + p {
    margin-top: 0.4rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0 1.1rem;
    margin: 0 0 0.75rem;
    padding: 0;
    list-style: none;
}

.footer-links li + li {
    margin-top: 0;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}