/* ============================================================
   RS Vision Consulting — Design System v2 (2026 rebuild)
   Palette drawn from brand logo: Ink #202020 / Signal Blue #0085FF
   Display: Archivo · Body: Manrope · Telemetry labels: IBM Plex Mono
   ============================================================ */

:root {
  --ink: #171a1f;
  --navy: #0b1d30;
  --navy-2: #0e2740;
  --blue: #0085ff;
  --blue-deep: #0067c7;
  --sky: #e8f3ff;
  --paper: #f6f8fa;
  --white: #ffffff;
  --amber: #ffb020;
  --slate: #5c6b7a;
  --line: #dde5ec;
  --line-dark: rgba(255, 255, 255, 0.14);

  --font-display: "Archivo", "Segoe UI", Arial, sans-serif;
  --font-body: "Manrope", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(11, 29, 48, 0.10);
  --shadow-lg: 0 24px 60px rgba(11, 29, 48, 0.16);
  --container: 1160px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--blue-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--blue); color: #fff; padding: .6rem 1rem;
  z-index: 200; border-radius: 0 0 var(--radius-sm) 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--pad); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: inherit;
}
h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.3rem; font-weight: 700; }
.lede { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--slate); max-width: 46em; }
.on-dark .lede, .on-dark p { color: #c3d2e0; }

/* Telemetry eyebrow — the signature label device */
.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.9rem;
}
.tag::before {
  content: "";
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 176, 32, 0.22);
}
.on-dark .tag { color: #7cc1ff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700; font-size: 1rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 22px rgba(0, 133, 255, 0.35); }
.btn-primary:hover { background: var(--blue-deep); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.on-dark .btn-ghost { border-color: var(--line-dark); color: #fff; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue-deep); }
.on-dark .btn-ghost:hover { color: #fff; border-color: #7cc1ff; }
.btn .arrow { transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 74px;
}
.brand img { height: 40px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; }
.nav-links a {
  font-family: var(--font-display); font-weight: 600; font-size: 0.98rem;
  color: var(--ink); padding: 0.4rem 0; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 2px; background: var(--blue); transition: width .18s ease;
}
.nav-links a:hover { text-decoration: none; color: var(--blue-deep); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
.nav-links a[aria-current="page"] { color: var(--blue-deep); }
.nav-cta { margin-left: 0.4rem; }

.nav-toggle {
  display: none; background: none; border: 2px solid var(--line);
  border-radius: var(--radius-sm); padding: 0.5rem 0.7rem; cursor: pointer;
  font-family: var(--font-display); font-weight: 700; color: var(--ink);
}

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: .4rem; }
  .nav-links {
    display: none; position: absolute; top: 74px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-top: 1px solid var(--line); }
  .nav-links a { display: block; padding: 1rem var(--pad); }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 1rem var(--pad); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 540px at 78% -10%, rgba(0, 133, 255, 0.28), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 65%, #0a2138 100%);
  color: #fff;
  overflow: hidden;
}
.hero .container {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem;
  align-items: center; padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
}
.hero p { max-width: 34em; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.8rem; }
.hero-visual { position: relative; }
.hero-visual img {
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  border: 1px solid var(--line-dark);
}

/* Signature: GPS route trace */
.route-svg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; opacity: 0.9;
}
.route-path {
  fill: none; stroke: rgba(124, 193, 255, 0.55); stroke-width: 2;
  stroke-dasharray: 6 10; stroke-linecap: round;
  animation: route-flow 26s linear infinite;
}
@keyframes route-flow { to { stroke-dashoffset: -640; } }
.route-dot { fill: var(--amber); }
.route-dot.pulse { animation: dot-pulse 2.6s ease-out infinite; transform-origin: center; }
@keyframes dot-pulse {
  0% { opacity: 0.9; } 50% { opacity: 0.35; } 100% { opacity: 0.9; }
}

/* Stat strip */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line-dark);
  border-top: 1px solid var(--line-dark);
}
.stat { background: rgba(255, 255, 255, 0.03); padding: 1.4rem var(--pad); }
.stat b {
  display: block; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.1rem); color: #fff;
}
.stat span { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8fa6ba; }

@media (max-width: 880px) {
  .hero .container { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Sections ---------- */
.section { padding: clamp(3.2rem, 7vw, 5.5rem) 0; }
.section-alt { background: var(--paper); }
.section-dark { background: linear-gradient(160deg, var(--navy), var(--navy-2)); color: #fff; }
.section-head { max-width: 52em; margin-bottom: 2.4rem; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2.6rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.7rem 1.6rem;
  display: flex; flex-direction: column; gap: 0.7rem;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(0, 133, 255, 0.4); }
.card h3 { display: flex; align-items: center; gap: 0.65rem; }
.card p { color: var(--slate); font-size: 0.99rem; }
.card .more { margin-top: auto; font-weight: 700; font-family: var(--font-display); font-size: 0.95rem; }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  background: var(--sky); color: var(--blue-deep);
}
.card-icon svg { width: 24px; height: 24px; }

a.card { color: inherit; }
a.card:hover { text-decoration: none; }

.section-dark .card { background: rgba(255, 255, 255, 0.04); border-color: var(--line-dark); }
.section-dark .card p { color: #b9c9d8; }
.section-dark .card-icon { background: rgba(0, 133, 255, 0.18); color: #7cc1ff; }

/* Checklist */
.checklist { list-style: none; display: grid; gap: 0.7rem; }
.checklist li { display: flex; gap: 0.7rem; align-items: flex-start; }
.checklist li::before {
  content: "✓"; flex: none; width: 22px; height: 22px; margin-top: 2px;
  border-radius: 50%; background: var(--sky); color: var(--blue-deep);
  font-weight: 800; font-size: 0.8rem; display: grid; place-items: center;
}
.on-dark .checklist li::before { background: rgba(0,133,255,.2); color: #7cc1ff; }

/* Figure */
.figure img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.figure { position: relative; }
.figure-caption {
  position: absolute; left: 1rem; bottom: 1rem;
  background: rgba(11, 29, 48, 0.85); color: #fff;
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em;
  padding: 0.45rem 0.8rem; border-radius: var(--radius-sm);
}

/* Sector rows */
.sector {
  display: grid; grid-template-columns: 240px 1fr; gap: 2rem;
  padding: 2.2rem 0; border-top: 1px solid var(--line);
}
.sector:last-of-type { border-bottom: 1px solid var(--line); }
.sector h3 { font-size: 1.5rem; }
.sector .sector-meta { color: var(--slate); font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; margin-top: .5rem; }
.sector ul { margin: 0.8rem 0 0 1.1rem; color: var(--slate); }
@media (max-width: 760px) { .sector { grid-template-columns: 1fr; gap: .8rem; } }

/* FAQ */
.faq { display: grid; gap: 0.9rem; max-width: 60em; }
.faq details {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0;
  overflow: hidden;
}
.faq summary {
  cursor: pointer; list-style: none; font-family: var(--font-display);
  font-weight: 700; font-size: 1.05rem; padding: 1.1rem 3.2rem 1.1rem 1.4rem;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 1.3rem; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; color: var(--blue); font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq details[open] { border-color: rgba(0,133,255,.45); }
.faq .faq-body { padding: 0 1.4rem 1.2rem; color: var(--slate); }

/* Engagement models */
.model { border-top: 4px solid var(--blue); }
.model .price-note { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--slate); }

/* Profile */
.profile { display: grid; grid-template-columns: 340px 1fr; gap: 3rem; align-items: start; }
.profile img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.profile .role { font-family: var(--font-mono); font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-deep); margin-top: .3rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1rem; }
.chip {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: .04em;
  background: var(--sky); color: var(--blue-deep);
  border-radius: 999px; padding: 0.35rem 0.85rem;
}
@media (max-width: 820px) { .profile { grid-template-columns: 1fr; } }

/* Page hero (interior pages) */
.page-hero {
  background:
    radial-gradient(900px 420px at 85% -20%, rgba(0,133,255,.3), transparent 60%),
    linear-gradient(160deg, var(--navy), var(--navy-2));
  color: #fff; position: relative; overflow: hidden;
}
.page-hero .container { padding-top: clamp(2.8rem, 6vw, 4.5rem); padding-bottom: clamp(2.8rem, 6vw, 4.5rem); }
.breadcrumb { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: #8fa6ba; margin-bottom: .9rem; }
.breadcrumb a { color: #8fa6ba; }
.breadcrumb a:hover { color: #fff; }

/* CTA band */
.cta-band { text-align: center; }
.cta-band .btn { margin-top: 1.6rem; }
.cta-band h2 { max-width: 20em; margin: 0 auto; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: start; }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }

.form { display: grid; gap: 1.1rem; }
.form label { font-family: var(--font-display); font-weight: 700; font-size: .95rem; display: block; margin-bottom: .35rem; }
.form input, .form select, .form textarea {
  width: 100%; font: inherit; color: var(--ink);
  padding: 0.8rem 1rem; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; transition: border-color .15s ease, box-shadow .15s ease;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(0,133,255,.15);
}
.form textarea { min-height: 150px; resize: vertical; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 600px) { .form .row { grid-template-columns: 1fr; } }
.form .hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.form-note { font-size: 0.88rem; color: var(--slate); }
.form-status { font-weight: 700; padding: .9rem 1.1rem; border-radius: var(--radius-sm); display: none; }
.form-status.ok { display: block; background: #e8f8ee; color: #16794c; }
.form-status.err { display: block; background: #fdecec; color: #b3261e; }

.info-card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.8rem;
}
.info-card dl { display: grid; gap: 1rem; }
.info-card dt { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--slate); }
.info-card dd { font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #aeb9c4; }
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.4rem;
  padding: 3rem 0 2.4rem;
}
.footer-top h4 { color: #fff; font-size: 0.95rem; margin-bottom: 0.9rem; letter-spacing: .04em; }
.footer-top ul { list-style: none; display: grid; gap: 0.55rem; }
.footer-top a { color: #aeb9c4; }
.footer-top a:hover { color: #fff; }
.footer-brand img { height: 36px; filter: brightness(0) invert(1); margin-bottom: 1rem; }
.footer-brand p { font-size: 0.92rem; max-width: 30em; }
.footer-social { display: flex; gap: 0.7rem; margin-top: 1.1rem; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2); display: grid; place-items: center; color: #fff;
}
.footer-social a:hover { background: var(--blue); border-color: var(--blue); text-decoration: none; }
.footer-social svg { width: 17px; height: 17px; fill: currentColor; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 1.2rem 0; display: flex; flex-wrap: wrap; gap: 0.8rem 1.6rem;
  justify-content: space-between; font-size: 0.85rem;
}
.footer-legal { display: flex; flex-wrap: wrap; gap: 1.2rem; list-style: none; }
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* Legal / prose pages */
.prose { max-width: 46em; }
.prose h2 { margin: 2rem 0 0.8rem; font-size: 1.4rem; }
.prose p, .prose li { color: var(--slate); }
.prose ul { margin: 0.6rem 0 0.6rem 1.2rem; }
.notice {
  background: #fff8e8; border: 1px solid #f2d99a; color: #7a5b12;
  border-radius: var(--radius-sm); padding: 1rem 1.2rem; margin: 1.4rem 0; font-size: .95rem;
}

/* Utility spacing (CSP-safe: no inline styles anywhere) */
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-2 { margin-top: 2rem; }
.mt-14 { margin-top: 1.4rem; }
.mt-12 { margin-top: 1.2rem; }
.mt-08 { margin-top: 0.8rem; }