/* ===========================================================
   NetSentry — a trading name of Adroit Limited
   Static site styles
   =========================================================== */

:root {
  --bg:        #0b1220;
  --bg-2:      #0e1626;
  --panel:     #121d31;
  --panel-2:   #16233b;
  --line:      #223350;
  --text:      #e7edf7;
  --muted:     #9fb0ca;
  --muted-2:   #7787a3;
  --accent:    #2dd4bf;  /* teal — "sentry" green/cyan */
  --accent-2:  #38bdf8;  /* sky blue — UniFi-adjacent */
  --accent-ink:#04211d;
  --danger:    #f87171;
  --radius:    14px;
  --radius-sm: 10px;
  --maxw:      1140px;
  --shadow:    0 20px 50px -20px rgba(0,0,0,.6);
  --font:      'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  --display:   'Space Grotesk', var(--font);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

h1, h2, h3, h4 { font-family: var(--display); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 .5em; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 .8rem;
}

.accent { color: var(--accent); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 200; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: .98rem;
  padding: .82rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink);
  box-shadow: 0 12px 30px -12px rgba(45,212,191,.6);
}
.btn-primary:hover { color: var(--accent-ink); box-shadow: 0 16px 34px -12px rgba(56,189,248,.65); }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); background: rgba(45,212,191,.06); }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,18,32,.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--text); }
.brand:hover { color: var(--text); }
.brand-mark { color: var(--accent); display: inline-flex; }
.brand-text { font-family: var(--display); font-weight: 500; font-size: 1.28rem; letter-spacing: -.02em; }
.brand-text strong { font-weight: 700; color: var(--accent); }

.site-nav { display: flex; align-items: center; }
.nav-menu { list-style: none; display: flex; align-items: center; gap: .35rem; margin: 0; padding: 0; }
.nav-menu a {
  color: var(--muted); font-weight: 500; font-size: .96rem;
  padding: .5rem .85rem; border-radius: 8px; transition: color .2s, background .2s;
}
.nav-menu a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-cta {
  color: var(--accent-ink) !important;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 600;
}
.nav-cta:hover { background: linear-gradient(135deg, var(--accent-2), var(--accent)); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .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(1000px 500px at 80% -10%, rgba(56,189,248,.16), transparent 60%),
    radial-gradient(800px 500px at 5% 10%, rgba(45,212,191,.14), transparent 55%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner { position: relative; padding: 92px 22px 84px; max-width: 900px; }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4rem); font-weight: 700; margin-bottom: .35em; }
.hero-lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 640px; margin: 0 0 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 1.8rem; }
.hero-trust { font-size: .95rem; color: var(--muted-2); margin: 0; }
.hero-trust strong { color: var(--text); font-weight: 600; }

/* ---------- Trust bar ---------- */
.trustbar { background: var(--bg-2); border-bottom: 1px solid var(--line); }
.trustbar-inner {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1rem; padding: 26px 22px;
}
.trust-item { display: flex; flex-direction: column; align-items: center; text-align: center; gap: .2rem; }
.trust-num { font-family: var(--display); font-size: 1.7rem; font-weight: 700; color: var(--accent); line-height: 1; }
.trust-label { font-size: .85rem; color: var(--muted); }

/* ---------- Generic section ---------- */
.section { padding: 84px 0; }
.section-head { max-width: 680px; margin-bottom: 3rem; }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.section-sub { color: var(--muted); font-size: 1.08rem; margin: 0; }

/* ---------- Service cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(45,212,191,.5); box-shadow: var(--shadow); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 1.1rem;
  color: var(--accent);
  background: rgba(45,212,191,.1);
  border: 1px solid rgba(45,212,191,.22);
}
.card h3 { font-size: 1.22rem; }
.card p { color: var(--muted); margin: 0; font-size: .98rem; }

/* ---------- UniFi section ---------- */
.section-unifi {
  background:
    radial-gradient(700px 380px at 90% 0%, rgba(56,189,248,.12), transparent 60%),
    var(--bg-2);
  border-block: 1px solid var(--line);
}
.unifi-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.unifi-copy h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.unifi-copy > p { color: var(--muted); font-size: 1.08rem; }
.check-list { list-style: none; margin: 1.5rem 0 2rem; padding: 0; display: grid; gap: .8rem; }
.check-list li { position: relative; padding-left: 2rem; color: var(--text); }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .35em;
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(45,212,191,.14);
  border: 1px solid var(--accent);
}
.check-list li::after {
  content: ""; position: absolute; left: 6px; top: .62em;
  width: 8px; height: 5px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.unifi-panel {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}
.stack-title { font-family: var(--display); font-weight: 600; color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 1.1rem; }
.stack-list { list-style: none; margin: 0 0 1.2rem; padding: 0; display: grid; gap: .55rem; }
.stack-list li {
  display: flex; align-items: baseline; gap: .7rem;
  padding: .7rem .9rem; border-radius: 10px;
  background: rgba(255,255,255,.03); border: 1px solid var(--line);
  color: var(--muted); font-size: .95rem;
}
.stack-list li span {
  font-family: var(--display); font-weight: 700; color: var(--accent);
  min-width: 74px;
}
.stack-note { color: var(--muted-2); font-size: .88rem; margin: 0; }

/* ---------- Split (solar) ---------- */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.split-copy h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.split-copy > p { color: var(--muted); font-size: 1.08rem; }
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 1.8rem; }
.feature h4 { color: var(--text); font-size: 1.04rem; margin-bottom: .3rem; }
.feature p { color: var(--muted); font-size: .94rem; margin: 0; }

.split-visual { display: grid; place-items: center; }
.visual-card {
  position: relative; width: 100%; max-width: 360px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); overflow: hidden;
}
.pulse {
  position: absolute; top: -40px; right: -40px;
  width: 140px; height: 140px; border-radius: 50%;
  background: radial-gradient(circle, rgba(45,212,191,.35), transparent 70%);
  animation: pulse 3.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { transform: scale(1); opacity: .7; } 50% { transform: scale(1.25); opacity: 1; } }
.visual-lines { position: relative; display: grid; gap: .7rem; }
.visual-lines .line {
  display: flex; justify-content: space-between; align-items: center;
  padding: .7rem .9rem; border-radius: 10px;
  background: rgba(255,255,255,.03); border: 1px solid var(--line);
  font-size: .92rem; color: var(--muted);
}
.visual-lines em { font-style: normal; font-weight: 600; font-size: .82rem; }
.visual-lines .ok { color: var(--accent); }
.visual-lines .quiet { color: var(--muted-2); }

/* ---------- Recent work ---------- */
.section-work {
  background:
    radial-gradient(700px 380px at 10% 0%, rgba(56,189,248,.10), transparent 60%),
    var(--bg);
  border-block: 1px solid var(--line);
}
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.work-card {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  border-left: 3px solid var(--accent);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.work-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.work-tag {
  display: inline-block; font-family: var(--display); font-weight: 600;
  font-size: .74rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: .7rem;
}
.work-card h3 { font-size: 1.14rem; }
.work-card p { color: var(--muted); margin: 0; font-size: .96rem; }

/* ---------- About ---------- */
.section-about { background: var(--bg-2); border-block: 1px solid var(--line); }
.about-inner { max-width: 860px; }
.about-inner h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.about-lead { color: var(--muted); font-size: 1.15rem; margin-bottom: 2.4rem; }
.about-lead strong { color: var(--text); }
.about-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-point h4 { color: var(--accent); font-size: 1.08rem; }
.about-point p { color: var(--muted); margin: 0; font-size: .96rem; }

/* ---------- Contact ---------- */
.section-contact {
  background:
    radial-gradient(700px 400px at 15% 0%, rgba(45,212,191,.12), transparent 60%),
    var(--bg);
}
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-copy h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.contact-copy > p { color: var(--muted); font-size: 1.08rem; }
.contact-list { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; gap: .7rem; }
.contact-list li { color: var(--muted); padding-left: 1.6rem; position: relative; }
.contact-list li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }

.contact-form {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
}
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-size: .88rem; font-weight: 500; color: var(--muted); margin-bottom: .4rem; }
.field input, .field textarea {
  width: 100%; padding: .8rem .9rem;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 1rem; resize: vertical;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45,212,191,.18);
}
.form-note { margin: 1rem 0 0; font-size: .92rem; color: var(--accent); min-height: 1.2em; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-2); border-top: 1px solid var(--line); padding: 40px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; flex-wrap: wrap; }
.footer-brand .brand-text { font-size: 1.2rem; }
.footer-brand p { color: var(--muted); font-size: .95rem; margin: .5rem 0 0; max-width: 320px; }
.footer-meta { text-align: right; }
.footer-meta p { color: var(--muted-2); font-size: .9rem; margin: 0 0 .3rem; }
.footer-meta strong { color: var(--muted); }

/* ---------- Focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .unifi-grid, .split, .contact-inner, .work-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-points { grid-template-columns: 1fr; }
  .footer-meta { text-align: left; }

  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: .2rem;
    background: var(--bg-2); border-bottom: 1px solid var(--line);
    padding: 12px 22px 20px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: .22s ease;
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu a { padding: .8rem .6rem; }
  .nav-cta { text-align: center; margin-top: .4rem; }
}

@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
  .trustbar-inner { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .feature-row { grid-template-columns: 1fr; }
  .hero-inner { padding: 64px 22px 60px; }
  .section { padding: 60px 0; }
}

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