/* The app's proof booth: neutral greys, so card colours are judged correctly, and process inks as accents. */
@font-face { font-family: "Barlow Semi Condensed"; font-weight: 400; font-display: swap; src: url("fonts/barlow-semi-condensed-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Barlow Semi Condensed"; font-weight: 500; font-display: swap; src: url("fonts/barlow-semi-condensed-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Barlow Semi Condensed"; font-weight: 600; font-display: swap; src: url("fonts/barlow-semi-condensed-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Barlow Semi Condensed"; font-weight: 700; font-display: swap; src: url("fonts/barlow-semi-condensed-latin-700-normal.woff2") format("woff2"); }

:root {
    --booth: #2b2b2b;
    --panel: #333333;
    --raised: #3c3c3c;
    --line: #4b4b4b;
    --text: #e9e9e7;
    --muted: #a5a5a2;
    --cyan: #19a7e0;
    --yellow: #e8c21c;
    --magenta: #e0388a;
    --paper: #f4f4f2;
    --ink-c: #00aeef;
    --ink-m: #ec008c;
    --ink-y: #fff200;
    --ink-k: #231f20;
    --halftone: radial-gradient(rgb(255 255 255 / 0.05) 0.9px, transparent 1.4px) 0 0 / 7px 7px;
    --radius: 4px;
    --measure: 66ch;
    --gutter: clamp(1rem, 4vw, 3rem);

    color-scheme: dark;
    font-family: "Barlow Semi Condensed", system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.55;
    color: var(--text);
    background: var(--booth);
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--halftone), var(--booth); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-underline-offset: 0.15em; }
a:hover { color: #3bb6e8; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 2px; }
h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1.05; }
p { margin: 0; }
code, kbd { padding: 0.05em 0.35em; border-radius: 3px; background: var(--raised); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85em; }
kbd { border: 1px solid var(--line); }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; padding: 0.4rem 0.8rem; background: var(--panel); }

/* Print shop marks */
.registration-mark { flex: none; color: var(--text); }
.color-bar {
    height: 6px;
    background: linear-gradient(90deg,
        var(--ink-c) 0 11%, var(--ink-m) 11% 22%, var(--ink-y) 22% 33%, var(--ink-k) 33% 44%,
        #2e3192 44% 52%, #00a651 52% 60%, #ed1c24 60% 68%,
        #7fd6f7 68% 76%, #f580c5 76% 84%, #fff880 84% 92%, #8a8a8a 92% 100%);
}

/* Crop marks at the four corners, like the proofs in the app. */
.proof {
    --mark: 14px;
    --mark-color: var(--muted);
    position: relative;
    margin: 0;
    padding: var(--mark);
    background:
        linear-gradient(var(--mark-color), var(--mark-color)) top left / var(--mark) 1px no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) top left / 1px var(--mark) no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) top right / var(--mark) 1px no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) top right / 1px var(--mark) no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) bottom left / var(--mark) 1px no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) bottom left / 1px var(--mark) no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) bottom right / var(--mark) 1px no-repeat,
        linear-gradient(var(--mark-color), var(--mark-color)) bottom right / 1px var(--mark) no-repeat;
}
.proof img { border-radius: 3px; box-shadow: 0 18px 50px rgb(0 0 0 / 0.45); }
.proof figcaption { margin-top: 0.6rem; color: var(--muted); font-size: 0.85rem; }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 5; background: rgb(43 43 43 / 0.92); backdrop-filter: blur(6px); }
.topbar-inner { display: flex; align-items: center; gap: 1.5rem; max-width: 76rem; margin: 0 auto; padding: 0.7rem var(--gutter); }
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--text); font-size: 1.15rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.brand:hover { color: var(--text); }
.topbar nav { display: flex; gap: 1.25rem; margin-left: auto; }
.topbar nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.topbar nav a:hover, .topbar nav a[aria-current="page"] { color: var(--text); }

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.6rem 1.05rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--raised);
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
}
.button:hover { color: var(--text); border-color: var(--muted); }
.button.primary { background: var(--cyan); border-color: var(--cyan); color: #06141b; }
.button.primary:hover { background: #3bb6e8; border-color: #3bb6e8; color: #06141b; }
.button small { font-weight: 500; opacity: 0.75; }
.button svg { width: 1.1em; height: 1.1em; flex: none; }

/* Hero: the printer from the app's start screen prints the last card of the pack. */
/* section.hero, because the printer's SVG also gets the class hero once the card is out. */
section.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
    gap: 2rem var(--gutter);
    max-width: 76rem;
    margin: 0 auto;
    padding: clamp(2rem, 6vw, 5rem) var(--gutter) 2rem;
}
.hero h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); letter-spacing: -0.015em; }
.hero h1 span { display: block; }
.hero .lead { max-width: 34rem; margin-top: 1.4rem; color: #cfcfcc; font-size: 1.2rem; line-height: 1.5; }
.downloads { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.hero .fineprint { margin-top: 0.9rem; color: var(--muted); font-size: 0.9rem; }
.mac-note { max-width: 34rem; margin-top: 1.4rem; color: #cfcfcc; font-size: 0.95rem; }

/* A command to copy into a terminal. */
.command { display: flex; align-items: stretch; gap: 0.4rem; margin: 0.6rem 0; }
.command code { flex: 1; min-width: 0; padding: 0.45rem 0.6rem; overflow-x: auto; white-space: nowrap; font-size: 0.85rem; }
.copy { flex: none; padding: 0 0.8rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--raised); color: var(--text); font: inherit; font-weight: 600; cursor: pointer; }
.copy:hover { border-color: var(--muted); }

.hero-figure { margin: 0; cursor: pointer; }
.hero-figure .iso-plate { padding: 48px 12px 44px; border-radius: var(--radius); }
.hero-press { aspect-ratio: 760 / 460; }

/* Facts as the colour control strip of a press sheet. */
.strip { max-width: 76rem; margin: 2.5rem auto 0; padding: 0 var(--gutter); }
.strip ul { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.strip li { padding: 1rem 1.1rem 1.1rem; border-top: 6px solid var(--ink); }
.strip li + li { border-left: 1px solid var(--line); }
.strip strong { display: block; font-size: 1.35rem; line-height: 1.15; }
.strip span { color: var(--muted); font-size: 0.92rem; }

/* Sections */
.section { max-width: 76rem; margin: 0 auto; padding: clamp(3.5rem, 8vw, 6.5rem) var(--gutter) 0; }
.section > h2 { max-width: 40rem; font-size: clamp(2rem, 4vw, 3rem); }
.section > .intro { max-width: var(--measure); margin-top: 1rem; color: #cfcfcc; font-size: 1.1rem; }

/* How it works: four steps, each with its screenshot. */
.steps { display: flex; flex-direction: column; gap: clamp(3rem, 7vw, 5.5rem); margin: 3rem 0 0; padding: 0; list-style: none; counter-reset: step; }
.step { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr); align-items: center; gap: 2rem var(--gutter); counter-increment: step; }
.step:nth-child(even) { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr); }
.step:nth-child(even) .step-text { order: 2; }
.step-text h3 { display: flex; align-items: baseline; gap: 0.75rem; font-size: 1.75rem; }
.step-text h3::before { content: counter(step); color: var(--ink); font-size: 3.2rem; line-height: 0.8; }
.step-text p { max-width: 30rem; margin-top: 0.9rem; color: #cfcfcc; }
.step-text ul { margin: 0.9rem 0 0; padding-left: 1.1rem; color: #cfcfcc; }
.step-text li + li { margin-top: 0.3rem; }

/* Details as a ruled list with ink markers. */
.details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--gutter); margin: 2.5rem 0 0; padding: 0; list-style: none; }
.details li { display: grid; grid-template-columns: 0.8rem 1fr; gap: 0.9rem; padding: 1.1rem 0; border-top: 1px solid var(--line); }
.details li::before { content: ""; width: 0.8rem; height: 0.8rem; margin-top: 0.4rem; background: var(--ink); }
.details strong { display: block; font-size: 1.1rem; }
.details span { color: #cfcfcc; }

/* FAQ */
.faq { max-width: 52rem; margin-top: 2rem; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; cursor: pointer; font-size: 1.15rem; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--cyan); font-weight: 700; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { max-width: var(--measure); padding: 0 0 1.2rem; color: #cfcfcc; }
.faq details > div p + p, .faq details > div p + ul, .faq details > div ul + p { margin-top: 0.7rem; }
.faq .more { margin-top: 1.5rem; }

/* Closing call to action */
.closing { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; max-width: 76rem; margin: clamp(4rem, 8vw, 6.5rem) auto 0; padding: 2rem var(--gutter); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.closing h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

/* Footer: the slug line of the press sheet. */
.footer { max-width: 76rem; margin: 0 auto; padding: 2.5rem var(--gutter) 3rem; color: var(--muted); font-size: 0.88rem; }
.footer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem var(--gutter); }
.footer h2 { margin-bottom: 0.5rem; color: var(--text); font-size: 0.95rem; }
.footer p + p { margin-top: 0.5rem; }
.footer .legal { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }

/* Documentation: a rail like the app's, and a reading column. */
.docs { display: grid; grid-template-columns: 14rem minmax(0, 1fr); gap: var(--gutter); max-width: 76rem; margin: 0 auto; padding: 2.5rem var(--gutter) 0; }
.docs-nav { position: sticky; top: 4.5rem; align-self: start; max-height: calc(100vh - 6rem); overflow-y: auto; padding-right: 0.5rem; }
.docs-nav h2 { margin-bottom: 0.5rem; color: var(--muted); font-size: 0.85rem; font-weight: 500; }
.docs-nav ol { margin: 0; padding: 0; list-style: none; }
.docs-nav a { display: block; padding: 0.3rem 0.6rem; border-left: 2px solid transparent; color: var(--muted); text-decoration: none; }
.docs-nav a:hover { color: var(--text); border-left-color: var(--cyan); background: var(--raised); }
.docs-content { max-width: 46rem; padding-bottom: 4rem; }
.docs-content > h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.docs-content > .intro { margin-top: 1rem; color: #cfcfcc; font-size: 1.1rem; }
.docs-content section { padding-top: 3rem; scroll-margin-top: 3.5rem; }
.docs-content h2 { display: flex; align-items: center; gap: 0.6rem; font-size: 1.9rem; }
.docs-content h3 { margin-top: 1.8rem; font-size: 1.25rem; scroll-margin-top: 4.5rem; }
.docs-content p, .docs-content ul, .docs-content ol, .docs-content table, .docs-content .proof, .docs-content .note { margin-top: 0.9rem; }
.docs-content ul, .docs-content ol { padding-left: 1.3rem; }
.docs-content li + li { margin-top: 0.35rem; }
.docs-content table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.docs-content th, .docs-content td { padding: 0.45rem 0.7rem 0.45rem 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.docs-content th { color: var(--muted); font-weight: 500; }
.note { padding: 0.8rem 1rem; border-left: 4px solid var(--yellow); border-radius: 0 var(--radius) var(--radius) 0; background: var(--panel); }
.docs-content .faq { margin-top: 1.2rem; }

@media (max-width: 900px) {
    /* minmax(0, …): a command that does not wrap must not widen the column. */
    section.hero { grid-template-columns: minmax(0, 1fr); }
    .strip ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .strip li:nth-child(3) { border-left: none; }
    .strip li:nth-child(n + 3) { border-top-width: 6px; }
    .step, .step:nth-child(even) { grid-template-columns: minmax(0, 1fr); }
    .step:nth-child(even) .step-text { order: 0; }
    .details { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .docs { grid-template-columns: minmax(0, 1fr); }
    .docs-nav { position: static; max-height: none; }
}

@media (max-width: 520px) {
    .strip ul { grid-template-columns: 1fr; }
    .strip li + li { border-left: none; }
    .brand { font-size: 1rem; }
    .topbar nav { gap: 0.9rem; }
    .topbar nav .wide-only { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0s !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition: none !important; }
}