/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright (C) 2026 Thibaut Lion */
/* Direction A, "boot screen": the BIOS's own colours. One look, dark by design. Airy: few words, big spacing. */
/* Fonts served from the site, not from Google: no visitor's address goes to a third party.
   Latin subset of Google Fonts' files, SIL OFL 1.1 (fonts/OFL-*.txt). */
@font-face { font-family: "Silkscreen"; font-weight: 400; font-display: swap; src: url(fonts/silkscreen-latin.woff2) format("woff2"); }
@font-face { font-family: "VT323"; font-weight: 400; font-display: swap; src: url(fonts/vt323-latin.woff2) format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 400 700; font-display: swap; src: url(fonts/ibm-plex-sans-latin.woff2) format("woff2"); }
:root {
  --bg: #0a1228; --bg2: #0d1733; --line: #1d2c55; --ink: #e3e8f2; --muted: #8a93a8;
  --sky: #44bbff; --green: #22ff44;
  --pixel: "Silkscreen", "Courier New", monospace; --digits: "VT323", "Courier New", monospace;
  --text: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--text);
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 3px; }
.wrap { max-width: 1080px; margin: 0 auto; }
svg { flex: none; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px; }
.logo { font-family: var(--pixel); color: var(--sky); text-decoration: none; font-size: 18px; letter-spacing: .04em; }
.logo small { font-family: var(--digits); color: var(--green); font-size: 18px; margin-left: 8px; letter-spacing: 0; }
.top nav { display: flex; gap: 22px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 56px; align-items: center; padding-block: 72px 88px; }
.hero h1 { font-family: var(--pixel); font-weight: 400; color: var(--sky); font-size: clamp(40px, 6vw, 68px); line-height: 1; margin: 0; }
.hero p { font-size: 20px; color: #c4cbd9; margin: 22px 0 0; max-width: 26ch; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 8px; text-decoration: none; font-weight: 700; font-size: 16px; }
.btn.dl { background: var(--sky); color: #061026; }
.btn.dl:hover { background: #6cccff; }
.btn.gh { border: 1px solid var(--line); background: var(--bg2); }
.btn.gh:hover { border-color: var(--sky); }
.screen { margin: 0; background: #000; border: 2px solid var(--line); border-radius: 10px; padding: 12px; }
.screen img { display: block; width: 100%; height: auto; image-rendering: pixelated; aspect-ratio: 320 / 224; }

/* numbers */
.numbers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.numbers div { padding: 26px 0; }
.numbers b { display: block; font-family: var(--digits); font-weight: 400; color: var(--green); font-size: 46px; line-height: 1; }
.numbers span { color: var(--muted); font-size: 15px; }

section { padding-block: 96px 0; }
.kicker { font-family: var(--digits); color: var(--muted); font-size: 20px; letter-spacing: .06em; text-transform: uppercase; }
h2 { font-family: var(--pixel); font-weight: 400; color: var(--sky); font-size: clamp(26px, 3.4vw, 36px); line-height: 1.15; margin: 6px 0 0; }

/* features */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px 32px; margin-top: 44px; }
.feat { margin: 0; }
.feat .screen { padding: 8px; border-radius: 8px; }
.feat h3 { font-size: 18px; margin: 16px 0 0; }
.feat p { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

/* notes */
.note { color: var(--muted); font-size: 14px; margin-top: 14px; }

/* install */
.steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; margin-top: 40px; }
.card { background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; padding: 26px 28px; }
.card h3 { margin: 0; font-size: 18px; }
.card ol { margin: 14px 0 0; padding-left: 20px; color: #c4cbd9; }
.card li { margin: 6px 0; }
code { font-family: var(--digits); font-size: 19px; color: var(--green); }

/* faq */
details { border-top: 1px solid var(--line); padding: 18px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::after { content: "+"; font-family: var(--digits); color: var(--sky); font-size: 26px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin: 10px 0 0; color: var(--muted); max-width: 70ch; }
.faq { margin-top: 32px; }

footer { margin-top: 110px; padding-block: 36px 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 28px; justify-content: space-between; }
footer a { color: var(--ink); }

@media (max-width: 820px) {
  .top nav { display: none; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 36px; padding-block: 36px 56px; }
  .numbers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  section { padding-block: 64px 0; }
}