/* Phosphor user guide. True black, one blue light, one character grid.
   Text colours all sit at 7:1 or more on the black. */
:root {
  --bg: #000000;
  --panel: #02060d;
  --line: #1e3e75;
  --line-hi: #2f5fae;
  --accent: #0068ff;
  --fg: #dbe7ff;
  --bright: #f2f7ff;
  --dim: #94b3e8;
  --link: #6eaaff;
  --warn: #ff9a8f;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--mono);
  padding-inline: 16px;
}
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--bright); }
:focus-visible { outline: 3px solid var(--link); outline-offset: 3px; }
img { max-width: 100%; height: auto; }
code, kbd {
  font-family: var(--mono);
  color: var(--bright);
  background: #07142b;
  border: 1px solid var(--line);
  padding: 0 0.35em;
  border-radius: 2px;
  white-space: nowrap;
}
.skip {
  position: absolute; left: 16px; top: -100px; z-index: 10;
  background: var(--bg); color: var(--bright); padding: 12px 16px; border: 2px solid var(--link);
}
.skip:focus { top: 8px; }
.wrap { max-width: 1080px; margin: 0 auto; }

/* ---------- top bar: the launcher's own path line ---------- */
.top {
  border-bottom: 1px solid var(--line);
  padding-block: 10px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 48px; padding-right: 8px;
  color: var(--bright); text-decoration: none; font-weight: 700; letter-spacing: 0.04em;
}
.brand img { width: 32px; height: 32px; border-radius: 6px; }
.brand .path { color: var(--dim); font-weight: 400; }
.nav { margin-left: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.nav a {
  display: inline-flex; align-items: center; min-height: 48px; padding: 0 10px;
  color: var(--dim); text-decoration: none; border: 1px solid transparent;
}
.nav a::before { content: "["; color: var(--line-hi); margin-right: 4px; }
.nav a::after { content: "]"; color: var(--line-hi); margin-left: 4px; }
.nav a:hover { color: var(--bright); border-color: var(--line); }
.nav a[aria-current="page"] { color: var(--bright); background: #06152f; border-color: var(--accent); }

/* ---------- headings and text ---------- */
h1, h2, h3 { color: var(--bright); line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(30px, 7vw, 56px); margin: 0 0 12px; letter-spacing: 0.02em;
     text-shadow: 0 0 18px rgba(0, 104, 255, 0.75), 0 0 2px rgba(110, 170, 255, 0.9); }
h2 { font-size: clamp(21px, 4vw, 28px); margin: 0 0 12px; }
h3 { font-size: 18px; margin: 22px 0 8px; }
p { margin: 0 0 14px; }
.lede { color: var(--fg); font-size: 18px; max-width: 62ch; margin-bottom: 26px; }
.dim { color: var(--dim); }
.prompt::before { content: "❯ "; color: var(--link); }
.cursor { display: inline-block; width: 0.6em; height: 1.05em; background: var(--link); vertical-align: -0.15em; margin-left: 4px;
          animation: blink 1.06s steps(1) infinite; box-shadow: 0 0 10px rgba(0, 104, 255, 0.9); }
@keyframes blink { 50% { opacity: 0; } }

main { padding-block: 28px 40px; }
section { margin-block: 0 36px; scroll-margin-top: 16px; }

/* ---------- box drawn panels: title sits in the top border ---------- */
.box {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 26px 18px 14px;
  margin-top: 18px;
  box-shadow: inset 0 1px 0 rgba(110, 170, 255, 0.10);
}
.box > .tag {
  position: absolute; top: -0.85em; left: 12px;
  background: var(--bg); color: var(--bright); padding: 0 6px; margin: 0;
  font-size: 16px; font-weight: 700;
}
.box > .tag::before { content: "┤ "; color: var(--line-hi); }
.box > .tag::after  { content: " ├"; color: var(--line-hi); }
.box > .meta { position: absolute; top: -0.85em; right: 12px; background: var(--bg); color: var(--dim); padding: 0 6px; font-size: 14px; }
.box.lit { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(0, 104, 255, 0.25), 0 0 24px rgba(0, 104, 255, 0.18); }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid .box { margin-top: 10px; }

/* ---------- hero ---------- */
.hero { display: grid; gap: 28px; align-items: center; grid-template-columns: 1fr; padding-top: 12px; }
@media (min-width: 820px) { .hero { grid-template-columns: 1.25fr 1fr; } }
.hero .boot { color: var(--dim); margin-bottom: 8px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 18px;
  font: 700 16px var(--mono); text-decoration: none;
  color: var(--bright); background: #041a42; border: 1px solid var(--accent);
  box-shadow: 0 0 16px rgba(0, 104, 255, 0.35), inset 0 1px 0 rgba(160, 200, 255, 0.25);
}
.btn:hover { background: #072456; color: #ffffff; }
.btn.ghost { background: transparent; box-shadow: none; border-color: var(--line-hi); color: var(--fg); }

/* a phone on the black, lit from above, with faint scanlines */
.phone {
  position: relative; margin: 0 auto; width: min(100%, 320px);
  border: 1px solid var(--line-hi); border-radius: 22px; padding: 8px; background: #01040a;
  box-shadow: 0 -1px 0 rgba(160, 200, 255, 0.35), 0 0 40px rgba(0, 104, 255, 0.22);
}
.phone img { display: block; border-radius: 15px; width: 100%; height: auto; }
.phone::after {
  content: ""; position: absolute; inset: 8px; border-radius: 15px; pointer-events: none;
  background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0) 0 2px, rgba(0, 0, 0, 0.18) 2px 3px),
              radial-gradient(120% 80% at 50% 40%, transparent 60%, rgba(0, 0, 0, 0.45));
}

/* ---------- screenshots strip ---------- */
.shots-wrap { overflow-x: auto; scroll-snap-type: x mandatory; padding: 6px 2px 16px; }
.shots-wrap:focus-visible { outline-offset: -3px; }
.shots { list-style: none; margin: 0; padding: 0; display: flex; gap: 16px; }
.shots li { flex: 0 0 auto; width: 200px; scroll-snap-align: start; }
.shots figure { margin: 0; }
.shots .phone { width: 200px; border-radius: 16px; padding: 5px; }
.shots .phone img { border-radius: 11px; }
.shots .phone::after { inset: 5px; border-radius: 11px; }
.shots figcaption { color: var(--dim); font-size: 14px; margin-top: 8px; }

/* ---------- lists ---------- */
ul.term, ol.term { padding-left: 0; list-style: none; margin: 0 0 14px; }
ul.term li { position: relative; padding-left: 2ch; margin-bottom: 6px; }
ul.term li::before { content: "·"; position: absolute; left: 0; color: var(--link); font-weight: 700; }
ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 14px; }
ol.steps li { counter-increment: s; position: relative; padding-left: 4ch; margin-bottom: 8px; }
ol.steps li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; color: var(--link); font-weight: 700; }
dl.keys { display: grid; grid-template-columns: minmax(0, 14em) minmax(0, 1fr); gap: 6px 18px; margin: 0 0 14px; }
dl.keys dt { color: var(--bright); }
dl.keys dd { margin: 0; color: var(--fg); }
@media (max-width: 560px) { dl.keys { grid-template-columns: 1fr; gap: 0; } dl.keys dd { margin-bottom: 10px; color: var(--dim); } }

/* ---------- table of contents ---------- */
.toc ol { list-style: none; padding: 0; margin: 0; columns: 2 220px; column-gap: 24px; }
.toc li { break-inside: avoid; }
.toc a { display: flex; align-items: center; min-height: 48px; text-decoration: none; color: var(--fg); gap: 10px; }
.toc a:hover { color: var(--bright); }
.toc .n { color: var(--link); }

/* ---------- faq ---------- */
details { border: 1px solid var(--line); background: var(--panel); margin-bottom: 10px; }
summary { cursor: pointer; min-height: 48px; display: flex; align-items: center; padding: 8px 14px; color: var(--bright); font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "▸"; color: var(--link); margin-right: 10px; }
details[open] summary::before { content: "▾"; }
details > div { padding: 0 14px 6px 36px; }

.note { border-left: 3px solid var(--accent); padding: 8px 14px; background: #03102a; margin: 0 0 14px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding-block: 22px 32px; color: var(--dim); font-size: 14px; }
footer ul { list-style: none; padding: 0; margin: 0 0 10px; display: flex; flex-wrap: wrap; gap: 4px 6px; }
footer a { display: inline-flex; align-items: center; min-height: 48px; padding: 0 8px; }

@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } html { scroll-behavior: auto; } }
@media (min-width: 900px) { html { scroll-behavior: smooth; } }

/* two phone shots side by side in the guide, stacked on small screens */
.pair { display: flex; flex-wrap: wrap; gap: 16px; margin: 16px 0; }
.pair figure { margin: 0; flex: 0 1 220px; }
.pair .phone { margin: 0; width: 100%; max-width: 220px; border-radius: 16px; padding: 5px; }
.pair .phone img { border-radius: 11px; }
.pair .phone::after { inset: 5px; border-radius: 11px; }
.pair figcaption { color: var(--dim); font-size: 14px; margin-top: 8px; }

/* ---------- bigger screens show more: the wrap widens on a 4K screen ---------- */
@media (min-width: 1700px) { .wrap { max-width: 1480px; } body { font-size: 17px; } }
@media (min-width: 2600px) { .wrap { max-width: 2000px; } body { font-size: 19px; } }

/* ---------- numbers row under the hero ---------- */
.stats { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); }
.stats li { border: 1px solid var(--line); background: var(--panel); padding: 12px 14px; }
.stats b { display: block; color: var(--bright); font-size: 26px; line-height: 1.2; text-shadow: 0 0 12px rgba(0, 104, 255, 0.6); }
.stats span { color: var(--dim); font-size: 14px; }

/* ---------- the looks gallery: more columns as the screen grows ---------- */
.looks { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 700px) { .looks { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); } }
.looks figure { margin: 0; }
.looks .phone { width: 100%; border-radius: 16px; padding: 5px; }
.looks .phone img { border-radius: 11px; }
.looks .phone::after { inset: 5px; border-radius: 11px; }
.looks figcaption { margin-top: 8px; font-size: 14px; color: var(--dim); }
.looks figcaption b { display: block; color: var(--bright); font-size: 15px; }
.looks .pro-tag { color: var(--link); }

/* ---------- feature list in columns ---------- */
.cols { columns: 2 320px; column-gap: 32px; }
.cols li { break-inside: avoid; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }