/* ==========================================================================
   AIGTS — Main stylesheet
   ========================================================================== */

:root {
  --navy-950: #070d1a;
  --navy-900: #0b1324;
  --navy-800: #111c33;
  --navy-700: #1a2847;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white: #ffffff;

  --accent: #14b8a6;
  --accent-600: #0d9488;
  --accent-300: #5eead4;
  --blue: #3b82f6;

  --text: #0f172a;
  --muted: var(--slate-600);

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgb(15 23 42 / .06), 0 1px 3px rgb(15 23 42 / .08);
  --shadow-md: 0 10px 30px -12px rgb(15 23 42 / .25);
  --container: 1180px;
  --header-h: 72px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.02em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--accent);
  color: var(--white);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  z-index: 100;
}
.skip-link:focus { left: 8px; }

:focus-visible { outline: 3px solid var(--accent-300); outline-offset: 2px; }

/* Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: .55rem 1.1rem; font-size: .9rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 8px 20px -8px rgb(20 184 166 / .6);
}
.btn-primary:hover { background: var(--accent-600); }

.btn-ghost {
  color: var(--white);
  border-color: rgb(255 255 255 / .3);
}
.btn-ghost:hover { border-color: var(--white); background: rgb(255 255 255 / .06); }

.btn-light { background: var(--white); color: var(--navy-900); }
.btn-light:hover { background: var(--slate-100); }

.link-arrow {
  font-weight: 600;
  color: var(--accent-600);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.link-arrow::after { content: "→"; transition: transform .2s; }
.link-arrow:hover::after { transform: translateX(4px); }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent-600);
  margin-bottom: .9rem;
}

/* Header
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 50;
  transition: background .3s, box-shadow .3s;
}
.site-header.scrolled {
  background: rgb(11 19 36 / .92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgb(255 255 255 / .06);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: .04em;
  color: var(--white);
}
.brand-mark { width: 30px; height: 30px; color: var(--accent); }

.nav-menu { display: flex; align-items: center; gap: 2rem; }
.nav-menu a:not(.btn) {
  color: var(--slate-300);
  font-weight: 500;
  font-size: .95rem;
  transition: color .2s;
}
.nav-menu a:not(.btn):hover { color: var(--white); }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--white);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% 10%, rgb(20 184 166 / .22), transparent 60%),
    radial-gradient(700px 500px at 0% 100%, rgb(59 130 246 / .18), transparent 60%),
    linear-gradient(180deg, var(--navy-950), var(--navy-900));
  color: var(--white);
  padding: calc(var(--header-h) + 110px) 0 120px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(255 255 255 / .04) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / .04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; max-width: 900px; }
.hero .eyebrow { color: var(--accent-300); }
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}
.accent {
  background: linear-gradient(90deg, var(--accent-300), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { font-size: 1.2rem; color: var(--slate-300); max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2.2rem 0 2.6rem; }
.hero-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 2rem;
  color: var(--slate-300);
  font-size: .95rem;
}
.hero-points li { display: flex; align-items: center; gap: .55rem; }
.hero-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgb(20 184 166 / .2);
}

/* Sections
   ========================================================================== */
.section { padding: 110px 0; }
.section-tint { background: var(--slate-50); }
.section-dark {
  background: linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: var(--white);
}
.section-dark .eyebrow { color: var(--accent-300); }
.section-dark .section-head p { color: var(--slate-300); }

.section-head { max-width: 720px; margin: 0 auto 60px; text-align: center; }
.section-head p:last-child { color: var(--muted); font-size: 1.1rem; margin-bottom: 0; }

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.pillar {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--slate-300); }
.pillar p { color: var(--muted); }
.pillar-featured { border-top: 4px solid var(--accent); }

.icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgb(20 184 166 / .14), rgb(59 130 246 / .14));
  color: var(--accent-600);
  margin-bottom: 1.4rem;
}
.icon svg,
.service svg,
.contact-details svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.checklist { list-style: none; padding: 0; margin: 1.2rem 0 0; }
.checklist li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: .55rem;
  font-size: .95rem;
  color: var(--text);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .45em;
  width: 1rem;
  height: .55rem;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg) scale(.8);
}

/* Security services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service {
  background: rgb(255 255 255 / .03);
  border: 1px solid rgb(255 255 255 / .08);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: background .25s, border-color .25s, transform .25s;
}
.service:hover {
  background: rgb(255 255 255 / .06);
  border-color: rgb(94 234 212 / .35);
  transform: translateY(-3px);
}
.service svg { color: var(--accent-300); margin-bottom: 1.1rem; width: 30px; height: 30px; }
.service h3 { font-size: 1.05rem; }
.service p { color: var(--slate-300); font-size: .94rem; margin: 0; }

/* Steps */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step { position: relative; padding-top: 24px; border-top: 2px solid var(--slate-200); }
.step::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--accent);
}
.step-num {
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--accent-600);
  letter-spacing: .1em;
  margin-bottom: .6rem;
}
.step p { color: var(--muted); font-size: .97rem; }

/* Why */
.why {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
  align-items: center;
}
.why-copy p { color: var(--muted); font-size: 1.08rem; margin-bottom: 2rem; }
.why-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.why-list li {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
}
.why-list h3 { font-size: 1.05rem; }
.why-list p { color: var(--muted); font-size: .94rem; margin: 0; }

/* CTA band */
.cta-band {
  background: linear-gradient(110deg, var(--accent-600), #1e6fd9);
  color: var(--white);
  padding: 64px 0;
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.cta-band h2 { font-size: clamp(1.5rem, 2.8vw, 2.1rem); margin-bottom: .3em; }
.cta-band p { margin: 0; opacity: .9; }

/* Contact */
.contact {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 72px;
  align-items: start;
}
.contact-copy > p { color: var(--muted); font-size: 1.08rem; }
.contact-details { list-style: none; padding: 0; margin: 2rem 0 0; }
.contact-details li { display: flex; align-items: center; gap: .9rem; margin-bottom: 1rem; font-weight: 500; }
.contact-details svg { color: var(--accent-600); width: 22px; height: 22px; }
.contact-details a:hover { color: var(--accent-600); }

.contact-form {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: calc(var(--radius) + 4px);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .4rem; }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: .97rem;
  padding: .75rem .9rem;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-sm);
  background: var(--slate-50);
  color: var(--text);
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 4px rgb(20 184 166 / .15);
}
.field .invalid { border-color: #dc2626; }
.form-status { margin: 1rem 0 0; font-size: .95rem; min-height: 1.4em; text-align: center; }
.form-status.success { color: var(--accent-600); }
.form-status.error { color: #dc2626; }

/* Footer
   ========================================================================== */
.site-footer {
  background: var(--navy-950);
  color: var(--slate-300);
  padding: 72px 0 0;
  font-size: .95rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand { max-width: 340px; }
.footer-brand p { margin-top: 1rem; color: var(--slate-500); }
.footer-links { display: flex; gap: 72px; }
.footer-links h4 {
  color: var(--white);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 1rem;
}
.footer-links a { display: block; margin-bottom: .6rem; transition: color .2s; }
.footer-links a:hover { color: var(--accent-300); }
.footer-bottom {
  border-top: 1px solid rgb(255 255 255 / .08);
  padding-top: 24px;
  padding-bottom: 32px;
  color: var(--slate-500);
  font-size: .88rem;
}
.footer-bottom p { margin: 0; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; }
}

/* Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .why, .contact { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy-900);
    padding: 12px 24px 24px;
    border-top: 1px solid rgb(255 255 255 / .08);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s, transform .25s;
  }
  .nav-menu.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid rgb(255 255 255 / .06); }
  .nav-menu .btn { margin-top: 16px; }
  .site-header:has(.nav-menu.open) { background: var(--navy-900); }

  .pillars { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .section { padding: 80px 0; }
  .hero { padding: calc(var(--header-h) + 64px) 0 88px; }
  .services-grid, .steps, .why-list, .field-row { grid-template-columns: 1fr; }
  .field-row { gap: 0; }
  .contact-form { padding: 24px; }
  .footer-links { gap: 48px; }
  .hero-actions .btn { flex: 1 1 100%; }
}