@font-face { font-family: Inter; src: url(fonts/inter-400.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: Inter; src: url(fonts/inter-600.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Space Grotesk"; src: url(fonts/space-grotesk-600.woff2) format("woff2"); font-weight: 600; font-display: swap; }

/* firewall.zanoski.com's dark green, the same as the app; every text colour clears 7:1 on the ground. */
:root {
  color-scheme: dark;
  --bg: #0c1116; --card: #121a21; --muted: #18222b; --hover: #1d2a34; --border: #24323e;
  --text: #e6ebf1; --soft: #c3ccd6; --primary: #3ecf8e; --primary-2: #6fe3ad; --on-primary: #06120c;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Space Grotesk", Inter, system-ui, sans-serif;
  --wrap: min(1120px, 100% - 40px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1.0625rem/1.65 var(--sans); }
a { color: var(--primary-2); text-underline-offset: .2em; }
:focus-visible { outline: 3px solid var(--primary-2); outline-offset: 3px; border-radius: 8px; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 50; background: var(--card); color: var(--text); padding: 12px 18px; border-radius: 8px; border: 2px solid var(--primary); }
.skip:focus { top: 16px; }
.wrap { width: var(--wrap); margin-inline: auto; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.15; margin: 0; letter-spacing: -.02em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.15rem; }
p { margin: 0; }
img { max-width: 100%; height: auto; }

/* Top bar */
.bar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.bar .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; color: var(--text); text-decoration: none; font: 600 1.15rem/1 var(--display); }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.bar nav { margin-left: auto; display: flex; flex-wrap: wrap; gap: 2px; align-items: center; }
.bar nav a { display: inline-flex; align-items: center; min-height: 48px; padding: 0 14px; border-radius: 8px; color: var(--soft); text-decoration: none; font-size: .95rem; }
.bar nav a:hover { background: var(--hover); color: var(--text); }
.bar nav a[aria-current] { color: var(--text); background: var(--muted); }

.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 22px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid var(--border); background: var(--card); color: var(--text); }
.btn:hover { background: var(--hover); }
.btn.main { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.btn.main:hover { background: var(--primary-2); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.sub { margin-top: 14px; color: var(--soft); max-width: 40em; font-size: 1.15rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 28px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 22px; display: flex; flex-direction: column; }
.card p { margin-top: 10px; color: var(--soft); }
.card .go { margin-top: auto; padding-top: 18px; }
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 32px; }
.shots figure { margin: 0; }
.shots img { border-radius: 14px; border: 1px solid var(--border); display: block; }
.shots figcaption { margin-top: 8px; color: var(--soft); font-size: .95rem; }

footer { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--soft); font-size: .95rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 4px; }
footer nav a { display: inline-flex; align-items: center; min-height: 48px; padding: 0 10px; color: var(--soft); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Guide pages */
.page { padding: clamp(28px, 5vw, 64px) 0 clamp(40px, 6vw, 80px); }
.page article { max-width: 46em; }
.page h1 { margin-bottom: 8px; }
.page h2 { font-size: 1.35rem; margin-top: 36px; }
.page p, .page li, .page dd { color: var(--soft); }
.page p { margin-top: 12px; }
.page ul { padding-left: 1.2em; }
.page li { margin-top: 8px; }
.page dl { margin: 12px 0 0; }
.page dt { font-weight: 600; color: var(--text); margin-top: 14px; }
.page dd { margin: 4px 0 0; }
.kicker { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--primary-2); margin-bottom: 10px; font-weight: 600; }
code { font-size: .92em; background: var(--muted); padding: 1px 6px; border-radius: 4px; color: var(--text); }