/* ============================================================
   SKYFACTOR — flight-operations design system
   Cool charcoal, blue/violet accent matching the SkyFactor logo.
   Display: Space Grotesk · Body: Inter · Data: system mono
   ============================================================ */

:root {
  --bg: #0a0e16;
  --bg-2: #0f1420;
  --panel: #141a28;
  --panel-2: #1b2334;
  --line: #26324a;
  --line-soft: #1d2540;
  --text: #e8edf6;
  --muted: #97a3bd;
  --dim: #66718c;
  --accent: #4e7cff;
  --accent-2: #3b5bdb;
  --accent-soft: rgba(78, 124, 255, .14);
  --accent-ink: #0b1020;
  --green: #3fbf87;
  --blue: #63b3ed;
  --red: #e2636a;
  --amber: #f2b64c;
  --radius: 12px;
  --nav-h: 64px;
  --font-display: "Space Grotesk", "Inter", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--accent-ink); }
a { color: var(--text); text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }

.container { width: min(1140px, 92vw); margin: 0 auto; }

/* ---------- typography ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}
h1 { font-size: clamp(2.3rem, 5.4vw, 3.9rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.12rem; font-weight: 600; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--accent);
}
.kicker::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}
.lede { color: var(--muted); font-size: 1.06rem; max-width: 58ch; }
.lede strong { color: var(--text); font-weight: 600; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(14, 15, 17, .9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1rem; letter-spacing: .02em; color: var(--text); }
.brand:hover { color: var(--text); }
.brand-logo { height: 24px; width: auto; display: block; }
.hero-logo { display: inline-block; background: #fff; border-radius: 16px; padding: 10px; box-shadow: 0 1px 0 rgba(255,255,255,0.06) inset, 0 12px 30px rgba(0,0,0,0.35); margin-bottom: 18px; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 7px;
  display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 800; font-size: .85rem;
}
.nav-links { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav-links a {
  color: var(--muted); font-size: .92rem; font-weight: 500;
  padding: 8px 12px; border-radius: 7px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text); background: var(--panel); }
.nav-links a.active { color: var(--accent); }
.nav-cta { display: flex; align-items: center; gap: 14px; }

/* status pill — quiet, no glow */
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 5px 11px; border-radius: 999px;
  white-space: nowrap;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.pill.ok { color: var(--green); border-color: rgba(91, 185, 138, .4); }
.pill.ok .dot { background: var(--green); }
.pill.bad { color: var(--red); border-color: rgba(217, 123, 114, .4); }
.pill.bad .dot { background: var(--red); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-display); font-weight: 600; font-size: .93rem;
  letter-spacing: .01em;
  padding: 12px 22px; border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .16s, border-color .16s, color .16s, transform .1s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
}
.btn-primary:hover { background: #6d8dff; color: var(--accent-ink); }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--muted); color: var(--text); }
.btn .arr { font-family: var(--font-mono); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 84px 0 70px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 { margin-top: 18px; }
.accent { color: var(--accent); }
.hero .lede { margin: 22px 0 30px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  display: flex; gap: 24px; margin-top: 38px;
  font-size: .82rem; color: var(--dim);
}
.hero-meta b { color: var(--text); font-weight: 600; }
.hero-meta span { display: flex; gap: 6px; align-items: center; }
.hero-meta span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* app window mockup (replaces the old "instrument" panel) */
.mock {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, .4);
}
.mock-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--panel-2);
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.mock-dot.a { background: var(--red); opacity: .7; }
.mock-dot.b { background: var(--accent); opacity: .7; }
.mock-dot.c { background: var(--green); opacity: .7; }
.mock-title { margin-left: 6px; font-family: var(--font-mono); font-size: .72rem; color: var(--dim); letter-spacing: .03em; }
.mock-body { display: grid; grid-template-columns: 200px 1fr; min-height: 320px; }
.mock-side { border-right: 1px solid var(--line-soft); padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.mock-row {
  border: 1px solid var(--line-soft); border-radius: 8px;
  padding: 9px 11px; background: var(--bg-2);
}
.mock-row.hot { border-color: var(--accent); }
.mock-row .cs { font-family: var(--font-mono); font-size: .8rem; font-weight: 600; color: var(--text); }
.mock-row .cs.hot { color: var(--accent); }
.mock-row .sub { font-family: var(--font-mono); font-size: .68rem; color: var(--dim); margin-top: 2px; }
.mock-main { position: relative; background: #0d1220; }
.mock-map { position: absolute; inset: 0; }
.mock-label {
  position: absolute; font-family: var(--font-mono); font-size: .66rem;
  letter-spacing: .06em; color: var(--dim);
}
.mock-plane { position: absolute; color: var(--accent); }
.mock-strip {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-soft);
  background: rgba(20, 26, 40, .92);
}
.mock-stat { padding: 10px 14px; }
.mock-stat .k { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .08em; color: var(--dim); }
.mock-stat .v { font-family: var(--font-mono); font-size: 1rem; color: var(--text); }
.mock-stat .v b { color: var(--accent); font-weight: 600; }

/* staggered load reveal */
.reveal { opacity: 1; transform: translateY(16px); animation: rise .6s cubic-bezier(.2,.7,.3,1) forwards; }
@media (prefers-reduced-motion: reduce) {
  .reveal { transform: none; animation: none; }
}
@keyframes rise { to { opacity: 1; transform: none; } }
.d1 { animation-delay: .04s; } .d2 { animation-delay: .1s; } .d3 { animation-delay: .18s; }
.d4 { animation-delay: .26s; } .d5 { animation-delay: .34s; }

/* ---------- sections ---------- */
.section { padding: 76px 0; }
.section-head { max-width: 700px; margin-bottom: 42px; }
.section-head h2 { margin: 14px 0 12px; }
.section-head .lede { font-size: 1rem; }

/* feature cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  border: 1px solid var(--line-soft);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color .18s, background .18s, transform .18s;
}
.card:hover { border-color: var(--line); background: var(--panel-2); transform: translateY(-2px); }
.card .ico {
  width: 42px; height: 42px; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  margin-bottom: 18px;
}
.card .ico svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); font-size: .94rem; }
.card .tag {
  display: inline-block; margin-top: 16px;
  font-size: .74rem; font-weight: 600; color: var(--dim);
}

/* split feature rows */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.split.reverse .split-visual { order: 2; }
.split h2 { margin: 14px 0 12px; }
.split p { color: var(--muted); margin-bottom: 12px; }
.split ul { list-style: none; margin-top: 16px; }
.split li { padding: 8px 0 8px 24px; position: relative; color: var(--muted); }
.split li::before { content: ""; position: absolute; left: 4px; top: 16px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.split-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
  min-height: 240px;
  display: grid; place-items: center;
}

/* stats band */
.band { border-block: 1px solid var(--line-soft); background: var(--bg-2); }
.band-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 44px 0; }
.band .num { font-family: var(--font-display); font-size: 2.3rem; font-weight: 700; color: var(--text); }
.band .lbl { font-size: .82rem; color: var(--dim); margin-top: 4px; }

/* integration chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: .86rem;
  padding: 8px 15px; border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--panel);
}

/* ---------- tables (network page) ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
th { font-size: .72rem; font-weight: 600; letter-spacing: .04em; color: var(--dim); }
tbody tr:hover { background: var(--panel-2); }
td.mono { font-family: var(--font-mono); }
.net { font-family: var(--font-mono); font-size: .72rem; padding: 2px 8px; border-radius: 5px; }
.net.vatsim { color: var(--green); background: rgba(91, 185, 138, .14); }
.net.ivao { color: var(--blue); background: rgba(107, 166, 196, .14); }
.freq { color: var(--accent); font-family: var(--font-mono); }

/* ---------- download cards ---------- */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.dl-card { border: 1px solid var(--line-soft); border-radius: var(--radius); background: var(--panel); padding: 28px 24px; text-align: center; }
.dl-card .os { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; }
.dl-card .os span { color: var(--accent); }
.dl-card .arch { font-size: .78rem; color: var(--dim); margin: 6px 0 18px; }
.dl-card .btn { width: 100%; justify-content: center; }
.dl-note { margin-top: 26px; font-size: .86rem; color: var(--dim); text-align: center; }

/* ---------- contact / forms ---------- */
.form-card { max-width: 620px; margin: 0 auto; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); padding: 30px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .8rem; font-weight: 600; color: var(--muted); margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px;
  background: var(--bg-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--font-body); font-size: 1rem;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-note { font-size: .82rem; color: var(--dim); margin-top: 14px; text-align: center; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); margin-bottom: 12px; padding: 18px 20px; }
.faq summary { cursor: pointer; font-family: var(--font-display); font-weight: 600; font-size: 1rem; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); font-size: .94rem; margin-top: 12px; }

/* ---------- page hero (sub pages) ---------- */
.page-hero { padding: 60px 0 28px; }
.page-hero h1 { margin: 16px 0 12px; }
.breadcrumb { font-size: .78rem; color: var(--dim); }
.breadcrumb a { color: var(--dim); }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- CTA band ---------- */
.cta { padding: 70px 0; }
.cta-box {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  padding: 56px 40px;
  text-align: center;
}
.cta-box h2 { margin: 14px 0 12px; }
.cta-box .lede { margin: 0 auto 26px; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line-soft); background: var(--bg-2); padding: 50px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer .brand { margin-bottom: 14px; }
.footer p { color: var(--dim); font-size: .88rem; max-width: 34ch; }
.footer h3 { font-size: .78rem; font-weight: 600; letter-spacing: .04em; color: var(--muted); margin-bottom: 14px; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 9px; }
.footer a { color: var(--dim); font-size: .9rem; }
.footer a:hover { color: var(--accent); }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .78rem; color: var(--dim); }

/* ---------- mobile nav ---------- */
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--text); border-radius: 8px; padding: 8px 10px; cursor: pointer; font-size: 1.1rem; }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform .2s, opacity .2s;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px; }
  .hero-grid, .split { grid-template-columns: 1fr; gap: 34px; }
  .split.reverse .split-visual { order: 0; }
  .cards, .dl-grid { grid-template-columns: 1fr; }
  .band-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-cta .pill { display: none; }
  .mock-body { grid-template-columns: 1fr; min-height: 0; }
  .mock-side { display: none; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; animation-iteration-count: 1 !important; transition-duration: .001s !important; }
  html { scroll-behavior: auto; }
}

/* utility: visually hidden but available to screen readers */
.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; }

/* split-visual placeholder (big number + label) */
.hud-num { font-family: var(--font-display); font-size: 2.9rem; font-weight: 700; color: var(--text); letter-spacing: -0.02em; line-height: 1; }
.hud-label { font-size: .82rem; color: var(--dim); margin-top: 8px; }

/* ---------- Legal pages (privacy / tos) ---------- */
.prose { max-width: 760px; }
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 700; letter-spacing: -0.01em;
  color: var(--text); margin: 2.2em 0 0.6em;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-family: var(--font-display);
  font-size: 1.02rem; font-weight: 600;
  color: var(--text); margin: 1.6em 0 0.4em;
}
.prose p { color: var(--muted); margin: 0 0 1em; line-height: 1.7; }
.prose ul { color: var(--muted); margin: 0 0 1.2em; padding-left: 1.2em; line-height: 1.7; }
.prose li { margin-bottom: 0.4em; }
.prose li::marker { color: var(--accent); }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--text); }
.prose strong { color: var(--text); }