/* Stet website: no third-party requests, fonts served from this site (SIL OFL, see /fonts). */

@font-face { font-family: "Literata"; src: url("fonts/literata_regular.ttf") format("truetype"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Literata"; src: url("fonts/literata_italic.ttf") format("truetype"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Literata"; src: url("fonts/literata_semibold.ttf") format("truetype"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrumentsans_regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrumentsans_semibold.ttf") format("truetype"); font-weight: 600; font-display: swap; }

/* Tokens from the app's design system (StetColors.kt). */
:root {
    --paper: #F5F5F2;
    --paper-set: #ECEDE9;
    --ink: #1E2433;
    --ink-set: #3A404C;
    --ink-muted: #636A76;
    --line: #E1E2DE;
    --dusk: #C9D3E3;
    --dusk-ink: #3D5A80;
    --alert: #9E4B45;
    --alert-container: #F2E1DE;
    --serif: "Literata", Georgia, "Times New Roman", serif;
    --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --paper: #15171C;
        --paper-set: #1C1F25;
        --ink: #E7E5DF;
        --ink-set: #CFCDC6;
        --ink-muted: #9AA0AA;
        --line: #2A2E36;
        --dusk: #2B3445;
        --dusk-ink: #A9BCD8;
        --alert: #D9958E;
        --alert-container: #3A2522;
    }
}

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

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

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.6;
    overflow-wrap: break-word;
}

a { color: var(--dusk-ink); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--dusk-ink); outline-offset: 2px; border-radius: 2px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--paper); padding: 8px 12px; z-index: 10; }

header.site, footer.site { max-width: 760px; margin: 0 auto; padding: 20px 16px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line); }
header.site .brand { font-family: var(--serif); font-size: 22px; font-weight: 600; color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
header.site nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 15px; }
header.site nav a { color: var(--ink-muted); text-decoration: none; }
header.site nav a:hover, header.site nav a[aria-current="page"] { color: var(--ink); }

main { max-width: 760px; margin: 0 auto; padding: 32px 16px 48px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.25; color: var(--ink); hyphens: auto; }
h1 { font-size: 34px; margin: 0 0 8px; }
h2 { font-size: 23px; margin: 44px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 18px; margin: 28px 0 8px; }
p, li { color: var(--ink-set); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
strong { color: var(--ink); }

.meta { color: var(--ink-muted); font-size: 15px; margin: 0 0 24px; }
.lead { font-family: var(--serif); font-size: 20px; color: var(--ink); }

.note {
    background: var(--paper-set);
    border-left: 3px solid var(--dusk-ink);
    padding: 14px 16px;
    border-radius: 4px;
    margin: 20px 0;
}
.note p { margin: 0; }
.note p + p { margin-top: 8px; }

.draft {
    background: var(--alert-container);
    border-left: 3px solid var(--alert);
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 15px;
    margin: 0 0 24px;
}

nav.toc { background: var(--paper-set); border-radius: 6px; padding: 12px 16px 12px 8px; margin: 24px 0; font-size: 15px; }
nav.toc ol { margin: 0; }

.table-wrap { overflow-x: auto; margin: 16px 0; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { font-weight: 600; color: var(--ink); background: var(--paper-set); }
td { color: var(--ink-set); }

/* Landing page */
.hero { padding: 40px 0 8px; }
.hero h1 { font-size: 44px; }
.hero .tagline { font-family: var(--serif); font-style: italic; font-size: 22px; color: var(--ink-muted); margin: 0 0 24px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 32px 0; }
.cards a { display: block; padding: 16px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--ink); background: var(--paper-set); }
.cards a span { display: block; color: var(--ink-muted); font-size: 14px; margin-top: 4px; }
.cards a:hover { border-color: var(--dusk-ink); }

footer.site { border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-muted); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-bottom: 8px; }
footer.site a { color: var(--ink-muted); }

@media (max-width: 520px) {
    h1 { font-size: 26px; }
    h2 { font-size: 21px; }
    table { font-size: 14px; }
    th, td { padding: 8px 6px; }
    .hero h1 { font-size: 36px; }
    header.site { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }