/* NID Systems corporate site — dependency-free, local assets only */
:root {
  --ink: #10182b;
  --ink-soft: #526079;
  --navy: #0b1224;
  --navy-light: #111d38;
  --paper: #f5f7fb;
  --white: #ffffff;
  --line: #dce2ec;
  --mint: #66d9b6;
  --mint-dark: #08785d;
  --blue: #4d9fff;
  --blue-soft: #eaf3ff;
  --shell: 1160px;
  --radius: 22px;
  --shadow: 0 24px 70px rgba(11, 18, 36, 0.12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
::selection { color: var(--navy); background: var(--mint); }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--navy);
  background: var(--white);
  border-radius: 8px;
  font-weight: 750;
  transform: translateY(-160%);
  transition: transform 150ms ease;
}
.skip-link:focus { transform: translateY(0); }

.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.site-header {
  position: relative;
  z-index: 10;
  color: var(--white);
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; letter-spacing: .08em; font-size: .94rem; }
.brand img { flex: 0 0 auto; }
.brand strong { font-weight: 800; }
.nav-list { display: flex; align-items: center; gap: clamp(18px, 3vw, 38px); margin: 0; padding: 0; list-style: none; }
.nav-list a { color: #dce5f6; font-size: .92rem; font-weight: 650; text-decoration: none; }
.nav-list a:hover { color: var(--white); }

.hero {
  position: relative;
  z-index: 0;
  isolation: isolate;
  min-height: 670px;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(380px, .96fr);
  align-items: center;
  gap: clamp(45px, 7vw, 100px);
  color: var(--white);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 50%;
  z-index: -1;
  width: 100vw;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 78% 35%, rgba(77,159,255,.19), transparent 29%),
    radial-gradient(circle at 64% 80%, rgba(102,217,182,.11), transparent 25%),
    var(--navy);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.16), transparent);
}
.eyebrow { margin: 0 0 14px; color: var(--mint-dark); font-size: .76rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.hero .eyebrow, .contact-band .eyebrow, .support-hero .eyebrow { color: var(--mint); }
h1, h2, h3 { margin-top: 0; font-weight: 760; line-height: 1.08; letter-spacing: -.035em; }
.hero h1 { max-width: 720px; margin-bottom: 25px; font-size: clamp(3.15rem, 6.3vw, 5.9rem); }
.hero h1 span { color: var(--mint); }
.hero-lede { max-width: 620px; margin: 0; color: #b8c5d9; font-size: clamp(1.08rem, 1.6vw, 1.3rem); }
.button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 12px 20px; border: 1px solid transparent; border-radius: 10px; font-size: .93rem; font-weight: 760; text-decoration: none; transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy); background: var(--mint); }
.button-primary:hover { background: #81e6c7; }
.button-secondary { color: var(--white); background: rgba(255,255,255,.035); border-color: rgba(255,255,255,.23); }
.button-secondary:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.4); }
.button-light { color: var(--navy); background: var(--white); }
.button-light:hover { background: #edf4ff; }

.hero-visual { position: relative; min-height: 470px; display: grid; place-items: center; }
.system-orbit { position: absolute; border: 1px solid rgba(255,255,255,.09); border-radius: 50%; }
.orbit-one { width: 430px; height: 430px; }
.orbit-two { width: 300px; height: 300px; border-color: rgba(102,217,182,.14); }
.orbit-one::after, .orbit-two::after { content: ""; position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 20px rgba(102,217,182,.7); }
.orbit-one::after { right: 32px; top: 83px; }
.orbit-two::after { left: 23px; bottom: 65px; background: var(--blue); box-shadow: 0 0 20px rgba(77,159,255,.8); }
.signal-card { position: absolute; border: 1px solid rgba(255,255,255,.16); background: rgba(16,29,56,.78); box-shadow: 0 25px 60px rgba(0,0,0,.3); backdrop-filter: blur(10px); }
.signal-card-main { width: min(340px, 88%); min-height: 245px; display: flex; flex-direction: column; padding: 30px; border-radius: 18px; transform: rotate(-3deg); }
.signal-label { color: #8fa0bb; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .72rem; letter-spacing: .12em; }
.signal-line { width: 100%; height: 70px; margin: 18px 0 24px; background: linear-gradient(135deg, transparent 44%, var(--mint) 45%, var(--mint) 47%, transparent 48%) 0 0 / 50px 25px; opacity: .75; mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); }
.signal-card-main strong { font-size: 1.55rem; letter-spacing: -.025em; }
.signal-status { margin-top: auto; color: #9eacc2; font-size: .82rem; }
.signal-card-small { right: -8px; bottom: 78px; display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 10px; color: #cbd7e9; font-size: .78rem; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 5px rgba(102,217,182,.1); }

.section { padding: clamp(82px, 10vw, 128px) 0; }
.product-section { background: var(--paper); }
.section-heading { display: grid; grid-template-columns: 1fr minmax(300px, 440px); align-items: end; gap: 50px; margin-bottom: 52px; }
.section-heading h2, .company-section h2, .contact-band h2, .info-grid h2 { margin-bottom: 0; font-size: clamp(2.2rem, 4.3vw, 4.25rem); }
.section-heading > p { margin: 0; color: var(--ink-soft); font-size: 1.07rem; }
.product-card { position: relative; min-height: 380px; display: grid; grid-template-columns: 100px 1fr 250px; align-items: stretch; overflow: hidden; color: var(--white); background: var(--navy); border-radius: var(--radius); box-shadow: var(--shadow); }
.product-number { padding: 35px 0 0 34px; color: #71809a; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .8rem; }
.product-content { align-self: center; max-width: 550px; padding: 50px 30px 50px 0; }
.product-state { display: flex; align-items: center; gap: 9px; margin: 0 0 22px; color: var(--mint); font-size: .75rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.product-state span { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.product-content h3 { margin-bottom: 16px; font-size: clamp(2.6rem, 5vw, 4.7rem); }
.product-content > p { max-width: 510px; margin: 0 0 28px; color: #b5c2d6; font-size: 1.1rem; }
.text-link { display: inline-flex; align-items: center; gap: 11px; color: var(--mint-dark); font-weight: 780; text-decoration: none; }
.product-card .text-link { color: var(--mint); }
.text-link:hover { text-decoration: underline; }
.product-symbol { position: relative; display: grid; place-items: center; overflow: hidden; background: linear-gradient(145deg, rgba(77,159,255,.15), rgba(102,217,182,.08)); }
.product-symbol::before, .product-symbol::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; }
.product-symbol::before { width: 250px; height: 250px; }
.product-symbol::after { width: 160px; height: 160px; }
.product-symbol span { z-index: 1; display: grid; width: 100px; height: 100px; place-items: center; color: var(--navy); background: var(--mint); border-radius: 24px; font-size: 1.4rem; font-weight: 850; letter-spacing: -.04em; transform: rotate(6deg); box-shadow: 0 18px 40px rgba(0,0,0,.23); }
.future-card { display: grid; grid-template-columns: 170px minmax(240px, 1fr) 1fr; gap: 35px; margin-top: 24px; padding: 40px 42px; background: var(--white); border: 1px solid var(--line); border-radius: 16px; }
.future-card .eyebrow { margin: 7px 0 0; }
.future-card h3 { margin: 0; font-size: clamp(1.6rem, 2.6vw, 2.3rem); }
.future-card > p:last-child { margin: 0; color: var(--ink-soft); }

.company-section { background: var(--white); }
.company-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(50px, 9vw, 125px); }
.company-copy { padding-top: 5px; }
.company-copy > p { margin: 0 0 22px; color: var(--ink-soft); font-size: 1.1rem; }
.principles { margin: 46px 0 0; border-top: 1px solid var(--line); }
.principles div { display: grid; grid-template-columns: 58px 1fr; padding: 18px 0; border-bottom: 1px solid var(--line); }
.principles dt { color: var(--mint-dark); font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .76rem; }
.principles dd { margin: 0; font-weight: 720; }

.contact-band { padding: 75px 0; color: var(--white); background: var(--navy-light); }
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.contact-band h2 { font-size: clamp(2rem, 4vw, 3.7rem); }

.site-footer { color: #aebbd0; background: #070c18; }
.footer-main { display: flex; justify-content: space-between; gap: 60px; padding-top: 70px; padding-bottom: 70px; }
.footer-brand .brand { color: var(--white); }
.footer-brand > p { margin: 20px 0 0; }
.footer-links { display: grid; grid-template-columns: repeat(2, 145px); gap: 45px; }
.footer-links div { display: flex; flex-direction: column; gap: 9px; }
.footer-links h2 { margin: 0 0 6px; color: #75849e; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.footer-links a { color: #ccd6e5; text-decoration: none; }
.footer-links a:hover { color: var(--white); text-decoration: underline; }
.footer-bottom { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid rgba(255,255,255,.1); font-size: .8rem; }
.footer-bottom p { margin: 0; }
.footer-bottom nav { display: flex; gap: 24px; }
.footer-bottom a { color: #c8d2e1; }
.compact-footer .footer-bottom { border-top: 0; }

/* Interior pages */
.page-hero { padding-top: 96px; padding-bottom: 82px; }
.page-hero h1, .support-hero h1, .error-main h1 { margin-bottom: 20px; font-size: clamp(3.2rem, 6vw, 5.6rem); }
.page-hero > p:last-child { max-width: 650px; margin: 0; color: var(--ink-soft); font-size: 1.16rem; }
.legal-page { padding-bottom: 110px; background: var(--paper); }
.legal-layout { display: grid; grid-template-columns: 220px minmax(0, 720px); gap: clamp(45px, 9vw, 120px); align-items: start; }
.legal-layout aside { position: sticky; top: 30px; display: flex; flex-direction: column; padding-top: 7px; }
.legal-layout aside p { margin: 0 0 15px; color: var(--ink); font-size: .75rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.legal-layout aside a { padding: 6px 0; color: var(--ink-soft); font-size: .9rem; text-decoration: none; }
.legal-layout aside a:hover { color: var(--mint-dark); }
.legal-content { padding: 52px clamp(25px, 5vw, 60px); background: var(--white); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 15px 50px rgba(11,18,36,.06); }
.legal-content section + section { padding-top: 31px; margin-top: 31px; border-top: 1px solid var(--line); }
.legal-content h2 { margin-bottom: 15px; font-size: 1.5rem; letter-spacing: -.02em; }
.legal-content p { margin: 0; color: #45516a; }
.legal-content p + p { margin-top: 14px; }
.legal-content a { color: #096c56; font-weight: 700; }

.support-hero { position: relative; z-index: 0; isolation: isolate; min-height: 570px; display: grid; grid-template-columns: 1fr minmax(350px, 470px); align-items: center; gap: clamp(55px, 9vw, 120px); color: var(--white); }
.support-hero::before { content: ""; position: absolute; inset: 0 auto 0 50%; z-index: -1; width: 100vw; transform: translateX(-50%); background: radial-gradient(circle at 78% 50%, rgba(77,159,255,.17), transparent 28%), var(--navy); }
.support-hero > div:first-child > p:not(.eyebrow) { max-width: 600px; margin: 0 0 34px; color: #b8c5d9; font-size: 1.13rem; }
.support-card { padding: 38px; color: var(--ink); background: var(--white); border-radius: 18px; box-shadow: var(--shadow); }
.support-icon { display: grid; width: 46px; height: 46px; margin-bottom: 28px; place-items: center; color: var(--navy); background: var(--mint); border-radius: 12px; font-size: 1.2rem; font-weight: 800; }
.support-card h2 { margin-bottom: 13px; font-size: 1.75rem; }
.support-card p { margin: 0; color: var(--ink-soft); }
.support-card ul { margin: 22px 0 0; padding: 0; list-style: none; }
.support-card li { position: relative; padding: 10px 0 10px 25px; border-top: 1px solid var(--line); font-size: .93rem; }
.support-card li::before { content: ""; position: absolute; left: 3px; top: 19px; width: 7px; height: 7px; border-radius: 50%; background: var(--mint-dark); }
.safe-email-section { background: var(--paper); }
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.info-grid article { padding: clamp(30px, 5vw, 52px); background: var(--white); border: 1px solid var(--line); border-radius: 18px; }
.info-grid h2 { margin-bottom: 22px; font-size: clamp(1.8rem, 3vw, 2.7rem); }
.info-grid p:not(.eyebrow) { color: var(--ink-soft); }

.error-page { min-height: 100vh; display: flex; flex-direction: column; background: var(--paper); }
.error-page .site-header, .error-page .compact-footer { flex: 0 0 auto; }
.error-main { position: relative; flex: 1 0 auto; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-height: 570px; padding-top: 70px; padding-bottom: 70px; overflow: hidden; }
.error-main > *:not(.error-code) { position: relative; z-index: 1; max-width: 600px; }
.error-main > p:not(.eyebrow) { margin: 0 0 30px; color: var(--ink-soft); font-size: 1.1rem; }
.error-code { position: absolute; right: 0; color: #e8ecf3; font-size: clamp(10rem, 27vw, 25rem); font-weight: 850; line-height: 1; letter-spacing: -.09em; user-select: none; }

@media (max-width: 900px) {
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 85px; padding-bottom: 75px; }
  .hero-visual { min-height: 370px; }
  .orbit-one { width: 360px; height: 360px; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; }
  .product-card { grid-template-columns: 70px 1fr 190px; }
  .future-card { grid-template-columns: 1fr 1.5fr; }
  .future-card > p:last-child { grid-column: 2; }
  .company-grid { grid-template-columns: 1fr; gap: 45px; }
  .legal-layout { grid-template-columns: 1fr; gap: 30px; }
  .legal-layout aside { position: static; display: none; }
  .support-hero { grid-template-columns: 1fr; padding-top: 80px; padding-bottom: 80px; }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .header-inner { min-height: 72px; }
  .brand { font-size: .82rem; }
  .brand img { width: 36px; height: 36px; }
  .nav-list { gap: 16px; }
  .nav-list li:nth-child(2) { display: none; }
  .nav-list a { font-size: .84rem; }
  .hero { padding-top: 67px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .button-row { flex-direction: column; align-items: stretch; }
  .hero-visual { min-height: 340px; }
  .orbit-one { width: 310px; height: 310px; }
  .orbit-two { width: 220px; height: 220px; }
  .signal-card-small { right: 0; bottom: 34px; }
  .section { padding: 76px 0; }
  .product-card { min-height: auto; grid-template-columns: 1fr; }
  .product-number { padding: 24px 25px 0; }
  .product-content { padding: 40px 25px 50px; }
  .product-symbol { min-height: 230px; }
  .future-card { grid-template-columns: 1fr; padding: 30px 25px; }
  .future-card > p:last-child { grid-column: auto; }
  .contact-inner, .footer-main, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .button-light { width: 100%; overflow-wrap: anywhere; }
  .footer-links { width: 100%; grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { justify-content: center; padding: 22px 0; }
  .page-hero { padding-top: 70px; padding-bottom: 55px; }
  .legal-content { padding: 38px 24px; }
  .support-card { padding: 28px 24px; }
  .info-grid { grid-template-columns: 1fr; }
  .error-code { top: 50%; right: -30px; transform: translateY(-50%); font-size: 13rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

@media print {
  .site-header, .site-footer, .legal-layout aside, .button-row, .contact-band { display: none; }
  body { color: #000; background: #fff; font-size: 11pt; }
  .legal-page, .product-section { background: #fff; }
  .legal-layout { display: block; }
  .legal-content { padding: 0; border: 0; box-shadow: none; }
}