/* fortis — "Graphite signal" (see /DESIGN.md): flat graphite, high-contrast
   text, one green signal accent, JetBrains Mono throughout. Dark only. */

@font-face { font-family: "JetBrains Mono"; font-weight: 400; font-display: swap; src: url("/fonts/jetbrains-mono-regular.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 500; font-display: swap; src: url("/fonts/jetbrains-mono-medium.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 600; font-display: swap; src: url("/fonts/jetbrains-mono-semibold.woff2") format("woff2"); }

:root {
  color-scheme: dark;
  --bg: #0B0C0D; --panel: #111315; --raised: #16191C; --line: #222528; --control: #5C636A;
  --text: #E9ECEF; --dim: #9AA1A8; --faint: #7D848B;
  --signal: #00FF41; --warn: #E6C15A; --bad: #F2545B;
  --r-sm: 4px; --r: 6px; --r-lg: 8px; --r-btn: 10px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.7 "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums; -webkit-text-size-adjust: 100%; overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; }
a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: inherit; color: var(--text); background: var(--raised); padding: 1px 5px; border-radius: var(--r-sm); font-size: 0.92em; }
strong { color: var(--text); font-weight: 600; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 560px) { .wrap { padding: 0 24px; } }

/* nav */
nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 0; flex-wrap: wrap; }
nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 500; font-size: 17px; color: var(--text); }
nav .brand:hover { text-decoration: none; }
nav .brand img { width: 28px; height: 28px; border-radius: 6px; }
nav .links { display: flex; flex-wrap: wrap; gap: 4px 18px; }
nav .links a { color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
nav .links a:hover, nav .links a[aria-current] { color: var(--text); text-decoration: none; }
nav .links a[aria-current] { box-shadow: inset 0 -2px 0 var(--signal); }

/* hero */
header.hero { padding: 64px 0 72px; border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--signal); letter-spacing: .08em; text-transform: uppercase; font-size: 11px; font-weight: 500; }
header.hero h1 { font-size: clamp(28px, 6vw, 46px); line-height: 1.2; margin: 12px 0 16px; letter-spacing: -.01em; font-weight: 600; }
header.hero p { font-size: clamp(15px, 2.6vw, 17px); color: var(--dim); margin: 0; max-width: 680px; }
header.hero p.warn { color: var(--warn); }

section { padding: 56px 0; border-bottom: 1px solid var(--line); }
section h2 { font-size: 20px; margin: 0 0 8px; font-weight: 600; }
section .lead { color: var(--dim); max-width: 680px; margin: 0 0 28px; }

/* panels */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; }
.panel.hero-line { border-top: 1px solid var(--signal); }
.product { display: grid; grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: start; }
.product + .product { margin-top: 20px; }
.product h3 { margin: 0 0 4px; font-size: 19px; font-weight: 600; }
.kicker { color: var(--signal); font-size: 12px; margin: 0 0 14px; letter-spacing: .02em; }
.product ul, .steps-list { margin: 14px 0 20px; padding-left: 18px; color: var(--dim); }
.product li { margin: 5px 0; }
.dim { color: var(--dim); }
.faint { color: var(--faint); }
.warn { color: var(--warn); }

/* buttons: shaded faces on a lip, as in the app */
.dl { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px;
  border-radius: var(--r-btn); font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  position: relative; top: 0; transition: top 50ms, box-shadow 50ms;
}
.btn:hover { text-decoration: none; }
.btn.primary { background: linear-gradient(#4DFF7A, #00D936); color: #03140A; box-shadow: 0 3px 0 #006B1B, inset 0 1px 0 rgba(255,255,255,.35); }
.btn.secondary { background: linear-gradient(#3A424A, #2B3238); color: var(--text); box-shadow: 0 3px 0 #15191C, inset 0 1px 0 rgba(255,255,255,.12); }
.btn:active { top: 3px; box-shadow: none; }
.btn.primary:active { background: #00C832; }
.btn.secondary:active { background: #272D33; }
.btn:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
.dl-note { font-size: 12.5px; color: var(--faint); margin: 0 0 10px; }
.dl-note code { font-size: 11px; word-break: break-all; }

details.install { margin: 0 0 6px; border: 1px solid var(--line); border-radius: var(--r); background: var(--raised); }
details.install > summary { cursor: pointer; padding: 12px 16px; font-size: 13.5px; font-weight: 500; list-style: none; }
details.install > summary::-webkit-details-marker { display: none; }
details.install > summary::before { content: "+"; color: var(--signal); margin-right: 8px; }
details.install[open] > summary::before { content: "\2212"; }
details.install .body { padding: 0 16px 14px; }
details.install ol { margin: 4px 0 0; padding-left: 20px; color: var(--dim); font-size: 13.5px; }
details.install li { margin: 6px 0; }
details.install .sub { margin: 12px 0 0; font-size: 12.5px; color: var(--faint); }
details.install code { font-size: 11px; word-break: break-all; }

.shots { display: flex; gap: 12px; max-width: 100%; overflow-x: auto; padding-bottom: 8px; }
.shots img { width: 164px; flex: none; border-radius: var(--r); border: 1px solid var(--line); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 14px; }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; }
.feature h3 { margin: 0 0 6px; font-size: 15px; font-weight: 600; }
.feature p { margin: 0; color: var(--dim); font-size: 14px; }

/* swaps page: video and the step-by-step */
.video { background: var(--panel); border: 1px solid var(--line); border-top-color: var(--signal); border-radius: var(--r); padding: 14px; }
.video { max-width: 420px; margin: 0 auto; }
.video video { display: block; width: 100%; height: auto; max-height: 82vh; margin: 0 auto; border-radius: var(--r-sm); background: #000; }
.step { display: grid; grid-template-columns: 200px 1fr; gap: 28px; align-items: start; padding: 28px 0; border-top: 1px solid var(--line); }
.step:first-child { border-top: 0; }
.step img { width: 200px; border-radius: var(--r); border: 1px solid var(--line); }
.step .n { color: var(--signal); font-size: 11px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.step h3 { margin: 4px 0 8px; font-size: 17px; font-weight: 600; }
.step p { margin: 0 0 10px; color: var(--dim); }
.step .you { color: var(--text); }
.tag { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; padding: 2px 8px; border-radius: var(--r-sm); background: var(--raised); color: var(--dim); }
.tag.go { color: #03140A; background: var(--signal); }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 14px; }
.facts dt { font-weight: 600; margin: 0 0 4px; }
.facts dd { margin: 0; color: var(--dim); font-size: 14px; }
.facts > div { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; }

footer { padding: 36px 0 60px; color: var(--faint); font-size: 13px; }
footer .row { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
footer a { color: var(--dim); }

/* legal pages */
.prose { max-width: 760px; }
.prose h2 { font-size: 17px; margin: 32px 0 8px; }
.prose p, .prose li { color: var(--dim); }

@media (max-width: 760px) {
  .product { grid-template-columns: 1fr; gap: 24px; }
  .step { grid-template-columns: 1fr; gap: 14px; }
  .step img { width: min(240px, 70vw); }
  header.hero { padding: 44px 0 52px; }
  section { padding: 44px 0; }
}