/* Signalbox site. One stylesheet, no external fonts, dark first with a light variant. */
:root {
  --bg: #0E0F12;
  --surface: #16181D;
  --surface-2: #1E2128;
  --border: #2C3039;
  --ink: #F4F5F7;
  --muted: #A9AFBC;
  --accent: #E5484D;
  --link: #FF7A7E;
  --button: #C9343A;
  --button-hover: #B02A30;
  --button-ink: #FFFFFF;
  --focus: #FF9EA1;
  --radius: 12px;
  --gutter: 16px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #FFFFFF;
    --surface: #F4F5F7;
    --surface-2: #EAECF0;
    --border: #D5D8DE;
    --ink: #16181D;
    --muted: #4F5562;
    --link: #B8262C;
    --focus: #B8262C;
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; 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 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
main:focus { outline: none; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); margin: 0 0 0.6em; }
h2 { font-size: 1.5rem; margin: 2.2em 0 0.6em; }
h3 { font-size: 1.1rem; margin: 1.6em 0 0.4em; }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--surface-2); padding: 0.1em 0.35em; border-radius: 4px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
blockquote { margin: 1em 0; padding: 0.2em 1em; border-left: 3px solid var(--accent); color: var(--muted); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 var(--gutter); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: var(--gutter); top: -100px; z-index: 10;
  background: var(--button); color: var(--button-ink); padding: 0.6em 1em; border-radius: 8px;
}
.skip:focus { top: 8px; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: inline-flex; padding: 4px 0; }
.brand img { display: block; height: 32px; width: auto; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; }
.site-nav a:hover { background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--link); font-weight: 600; }
.lang-switch { border: 1px solid var(--border); font-weight: 600; }

main { padding-top: 40px; padding-bottom: 64px; }

/* Home */
.hero { padding: 24px 0 8px; }
.hero-symbol { width: 72px; margin-bottom: 16px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 46em; }
.notice {
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent);
  border-radius: var(--radius); padding: 14px 18px; max-width: 46em;
}
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button {
  display: inline-block; padding: 12px 20px; border-radius: 10px; font-weight: 600;
  background: var(--button); color: var(--button-ink); text-decoration: none; border: 2px solid var(--button);
}
.button:hover { background: var(--button-hover); border-color: var(--button-hover); }
.button--ghost { background: transparent; color: var(--ink); border-color: var(--border); }
.button--ghost:hover { background: var(--surface-2); border-color: var(--border); }

.chips, .badges, .features { list-style: none; margin: 0; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.features li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 4px 20px 8px; }
.features h3 { margin-top: 0.9em; }
.features p { color: var(--muted); margin-top: 0; }

.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.shot { margin: 0; }
.shot-box {
  aspect-ratio: 16 / 10; display: grid; place-items: center; text-align: center; padding: 12px;
  border: 2px dashed var(--border); border-radius: var(--radius); background: var(--surface);
  color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.8rem;
}
.shot figcaption { margin-top: 8px; color: var(--muted); font-size: 0.95rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.compare { width: 100%; border-collapse: collapse; min-width: 480px; }
.compare th, .compare td { text-align: left; vertical-align: top; padding: 12px 16px; border-bottom: 1px solid var(--border); width: 50%; }
.compare thead th { background: var(--surface); }
.compare thead th + th { color: var(--link); }
.compare tbody tr:last-child td { border-bottom: 0; }
.small { font-size: 0.9rem; color: var(--muted); }

.badges { display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  display: inline-flex; flex-direction: column; justify-content: center; min-height: 52px;
  padding: 8px 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); font-weight: 600;
}
.badge small { font-weight: 400; color: var(--muted); font-size: 0.8rem; }
.badge--soon { border-style: dashed; }

/* Text pages */
.prose { max-width: 46em; }
.prose li { margin: 0.3em 0; }
.prose h2 { padding-top: 0.6em; border-top: 1px solid var(--border); }
.prose h3 + p, .prose h3 + ul { margin-top: 0; }
.meta { color: var(--muted); font-size: 0.95rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); color: var(--muted); font-size: 0.95rem; padding: 24px 0 32px; }
.site-footer .disclaimer { color: var(--ink); }
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 18px; list-style: none; padding: 0; margin: 12px 0; }