/* ============================================================
   FenceEye AI — marketing site styles
   Dark, technical, security-product aesthetic.
   ============================================================ */

:root {
  --bg:        #070b14;
  --bg-2:      #0a0f1a;
  --surface:   #0e1626;
  --surface-2:#131e33;
  --line:      #1f2d47;
  --line-2:    #2a3a5a;
  --text:      #e6edf7;
  --muted:     #94a6c4;
  --muted-2:   #64789b;
  --accent:    #22d3ee;  /* cyan */
  --accent-2:  #38bdf8;
  --warn:      #f59e0b;
  --danger:    #fb7185;
  --good:      #34d399;
  --radius:    14px;
  --radius-sm: 9px;
  --shadow:    0 18px 50px -20px rgba(0,0,0,.65);
  --shadow-soft: 0 8px 30px -18px rgba(0,0,0,.55);
  --maxw:      1180px;
  --ease:      cubic-bezier(.4,.0,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pulse, .scanline { animation: none !important; }
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, video, svg { max-width: 100%; display: block; }
code { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em; color: var(--accent); background: rgba(34,211,238,.08); padding: .1em .35em; border-radius: 5px; }

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 1000;
  background: var(--accent); color: #04222a; padding: .6rem 1rem;
  border-radius: 8px; font-weight: 700; text-decoration: none;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-weight: 600; font-size: .98rem; line-height: 1;
  padding: .85rem 1.35rem; border-radius: 10px;
  border: 1px solid transparent; text-decoration: none; cursor: pointer;
  transition: transform .15s var(--ease), background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  white-space: nowrap;
}
.btn--solid {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04222a; box-shadow: 0 10px 30px -10px rgba(34,211,238,.6);
}
.btn--solid:hover { transform: translateY(-2px); box-shadow: 0 16px 38px -12px rgba(34,211,238,.75); }
.btn--ghost {
  background: rgba(255,255,255,.02); color: var(--text);
  border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn--block { width: 100%; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,11,20,.78);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex; align-items: center; gap: 1.5rem;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--text); font-weight: 800; letter-spacing: -.01em; font-size: 1.12rem; }
.brand__name { color: var(--text); }
.brand__ai { color: var(--accent); }
.brand__mark {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px;
  width: 26px; height: 26px; padding: 3px; border-radius: 7px;
  background: var(--surface-2); border: 1px solid var(--line-2);
}
.brand__link { background: var(--accent); border-radius: 1.5px; opacity: .85; }

.nav__links { display: flex; gap: 1.6rem; margin-left: auto; }
.nav__links a { color: var(--muted); text-decoration: none; font-size: .95rem; font-weight: 500; transition: color .15s var(--ease); }
.nav__links a:hover { color: var(--text); }
.nav__cta { margin-left: 0; }
.nav__burger { display: none; flex-direction: column; gap: 5px; margin-left: auto; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__burger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s var(--ease), opacity .2s var(--ease); }
.nav__mobile { display: none; flex-direction: column; gap: .4rem; padding: .8rem 1.2rem 1.2rem; border-top: 1px solid var(--line); background: var(--bg-2); }
.nav__mobile a { color: var(--muted); text-decoration: none; padding: .7rem .2rem; border-bottom: 1px solid var(--line); font-size: 1rem; }
.nav__mobile .btn { margin-top: .6rem; }

/* ---------- Section framework ---------- */
.section { padding: 6rem 0; position: relative; }
.section--alt { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-block: 1px solid var(--line); }
.section__head { max-width: 760px; margin: 0 0 3rem; }
.kicker {
  display: inline-flex; align-items: center; gap: .5rem;
  text-transform: uppercase; letter-spacing: .18em; font-size: .72rem; font-weight: 700;
  color: var(--accent); margin: 0 0 1rem;
}
.kicker--light { color: var(--accent); }
.section__title { font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.12; letter-spacing: -.02em; margin: 0 0 1rem; font-weight: 800; }
.section__title--light { color: #fff; }
.section__lede { font-size: 1.08rem; color: var(--muted); margin: 0; max-width: 64ch; }
.section__lede--light { color: #b9c8e0; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 4.5rem 0 6rem; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.grid-overlay {
  position: absolute; inset: -20% -10%;
  background-image:
    linear-gradient(rgba(34,211,238,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 30% 20%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 30% 20%, #000 30%, transparent 75%);
}
.scanline {
  position: absolute; left: 0; right: 0; height: 2px; top: 18%;
  background: linear-gradient(90deg, transparent, rgba(34,211,238,.35), transparent);
  filter: blur(.4px); opacity: .5;
  animation: scan 7s linear infinite;
}
@keyframes scan { 0% { transform: translateY(-10vh); } 100% { transform: translateY(120vh); } }
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: .55rem; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin: 0 0 1.1rem; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 0 rgba(52,211,153,.6); animation: pulse 2.4s var(--ease) infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(52,211,153,.55); } 70% { box-shadow: 0 0 0 9px rgba(52,211,153,0); } 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); } }
.hero__title { font-size: clamp(2.2rem, 5.2vw, 3.6rem); line-height: 1.04; letter-spacing: -.03em; margin: 0 0 1.3rem; font-weight: 800; }
.grad { background: linear-gradient(120deg, var(--accent), var(--accent-2) 60%, #818cf8); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lede { font-size: 1.16rem; color: var(--muted); margin: 0 0 1.8rem; max-width: 56ch; }
.hero__lede strong { color: var(--text); font-weight: 700; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 1.8rem; }
.hero__chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.hero__chips li { display: inline-flex; align-items: center; gap: .45rem; font-size: .85rem; color: var(--muted); background: var(--surface); border: 1px solid var(--line); padding: .45rem .8rem; border-radius: 999px; }
.chip__icon { color: var(--accent); font-weight: 700; }

/* ---------- Player ---------- */
.player { margin: 0; border-radius: var(--radius); overflow: hidden; background: #000; border: 1px solid var(--line-2); box-shadow: var(--shadow); }
.player video, .player--lg video { width: 100%; height: auto; display: block; background: #000; }
.player__caption, .player figcaption { font-size: .85rem; color: var(--muted); padding: .7rem .9rem; background: var(--surface); border-top: 1px solid var(--line); margin: 0; }
.player--lg { max-width: 980px; margin-inline: auto; }
.hero__media { position: relative; }
.hero__media::before {
  content: ""; position: absolute; inset: -22px; z-index: -1;
  background: radial-gradient(60% 60% at 60% 40%, rgba(34,211,238,.18), transparent 70%);
  filter: blur(20px);
}

/* ---------- Grid / cards ---------- */
.grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.2rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; transition: border-color .2s var(--ease), transform .2s var(--ease), background .2s var(--ease);
}
.card:hover { border-color: var(--line-2); transform: translateY(-3px); }
.card h3 { margin: 0 0 .55rem; font-size: 1.05rem; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card em { color: var(--text); font-style: normal; }
.card--feature .card__icon {
  width: 44px; height: 44px; display: grid; place-items: center; font-size: 1.3rem;
  background: var(--surface-2); border: 1px solid var(--line-2); border-radius: 11px;
  color: var(--accent); margin-bottom: 1rem;
}

/* ---------- Split ---------- */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: start; }
.feature-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.6rem; }
.feature-list li { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; }
.feature-list__dot { width: 14px; height: 14px; margin-top: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(34,211,238,.15); }
.feature-list h3 { margin: 0 0 .35rem; font-size: 1.1rem; }
.feature-list p { margin: 0; color: var(--muted); }
.split__media { display: grid; gap: 1.2rem; }
.figure { margin: 0; }
.figure img { border-radius: var(--radius); border: 1px solid var(--line-2); box-shadow: var(--shadow-soft); }
.figure figcaption { font-size: .82rem; color: var(--muted); margin-top: .6rem; }

/* ---------- Pipeline ---------- */
.pipeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; counter-reset: stage; }
.stage {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.8rem 1.6rem 1.5rem; overflow: hidden;
}
.stage::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: linear-gradient(180deg, var(--accent), transparent); }
.stage__num { font-family: "JetBrains Mono", monospace; font-size: .8rem; color: var(--accent); letter-spacing: .1em; margin-bottom: .8rem; }
.stage h3 { margin: 0 0 .7rem; font-size: 1.2rem; }
.stage p { margin: 0 0 1.2rem; color: var(--muted); font-size: .96rem; }
.stage__meta { display: grid; gap: .45rem; margin: 0; padding-top: 1rem; border-top: 1px solid var(--line); }
.stage__meta div { display: grid; grid-template-columns: 88px 1fr; gap: .5rem; font-size: .82rem; }
.stage__meta dt { color: var(--muted-2); font-weight: 600; }
.stage__meta dd { margin: 0; color: var(--text); }

/* ---------- Use cases ---------- */
.usecases { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1.2rem; }
.usecase {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.usecase:hover { border-color: var(--line-2); transform: translateY(-2px); }
.usecase--lead { grid-row: span 2; background: linear-gradient(180deg, var(--surface-2), var(--surface)); border-color: var(--line-2); }
.usecase__head { display: flex; align-items: center; gap: .8rem; margin-bottom: .7rem; }
.usecase__tag { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: #04222a; background: var(--accent); padding: .22rem .5rem; border-radius: 5px; }
.usecase h3 { margin: 0 0 .6rem; font-size: 1.1rem; }
.usecase p { margin: 0; color: var(--muted); font-size: .95rem; }
.usecase--lead p { font-size: 1rem; }
.usecase__points { list-style: none; margin: 1.3rem 0 0; padding: 1.1rem 0 0; border-top: 1px solid var(--line); display: grid; gap: .55rem; }
.usecase__points li { position: relative; padding-left: 1.4rem; color: var(--muted); font-size: .9rem; }
.usecase__points li::before { content: "✓"; position: absolute; left: 0; color: var(--good); font-weight: 700; }

/* ---------- Specs ---------- */
.specs { overflow-x: auto; }
.spec-table { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec-table caption { caption-side: top; text-align: left; padding: .5rem; color: var(--muted); }
.spec-table th, .spec-table td { text-align: left; padding: 1rem 1.2rem; border-bottom: 1px solid var(--line); font-size: .93rem; vertical-align: top; }
.spec-table thead th { background: var(--surface-2); color: var(--muted); font-weight: 700; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.spec-table tbody th { color: var(--text); font-weight: 600; }
.spec-table tbody td { color: var(--muted); }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:hover { background: rgba(34,211,238,.03); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: .8rem; max-width: 820px; }
.faq__item {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0; transition: border-color .2s var(--ease);
}
.faq__item[open] { border-color: var(--line-2); }
.faq__item summary {
  cursor: pointer; list-style: none; padding: 1.1rem 1.3rem; font-weight: 600; font-size: 1.02rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; font-size: 1.4rem; font-weight: 400; color: var(--accent); transition: transform .2s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: var(--radius); }
.faq__item p { margin: 0; padding: 0 1.3rem 1.2rem; color: var(--muted); font-size: .97rem; }

/* ---------- CTA ---------- */
.section--cta { background: linear-gradient(180deg, var(--bg), #0c1326 60%, var(--bg)); border-top: 1px solid var(--line); }
.cta { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.cta__contact {
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 2rem; box-shadow: var(--shadow-soft);
}
.contact-email {
  display: grid; grid-template-columns: auto 1fr; grid-template-areas:
    "icon label"
    "icon addr";
  column-gap: 1rem; row-gap: .15rem;
  align-items: center; text-decoration: none; padding: 1rem; border-radius: var(--radius-sm);
  background: var(--bg-2); border: 1px solid var(--line); transition: border-color .15s var(--ease), transform .15s var(--ease);
}
.contact-email:hover { border-color: var(--accent); transform: translateY(-1px); }
.contact-email__icon { grid-area: icon; font-size: 1.6rem; color: var(--accent); }
.contact-email__label { grid-area: label; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted-2); font-weight: 700; }
.contact-email__addr { grid-area: addr; font-size: 1.25rem; font-weight: 700; color: var(--text); word-break: break-all; }
.contact-note { margin: 1.2rem 0 0; color: var(--muted); font-size: .95rem; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); background: var(--bg-2); padding: 2.5rem 0; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem; align-items: center; }
.footer__brand { display: flex; flex-direction: column; gap: .35rem; }
.footer__tag { color: var(--muted-2); font-size: .85rem; margin: 0; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.3rem; margin-left: auto; }
.footer__links a { color: var(--muted); text-decoration: none; font-size: .9rem; transition: color .15s var(--ease); }
.footer__links a:hover { color: var(--accent); }
.footer__legal { color: var(--muted-2); font-size: .82rem; margin: 0; }

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

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__media { order: -1; }
  .split { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .usecases { grid-template-columns: 1fr; }
  .usecase--lead { grid-row: auto; }
  .cta { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile[hidden] { display: none; }
  .nav__mobile:not([hidden]) { display: flex; }
  .section { padding: 4rem 0; }
  .hero { padding: 2.5rem 0 4rem; }
  .grid--4, .grid--3 { grid-template-columns: 1fr; }
  .hero__chips li { font-size: .78rem; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__links { margin-left: 0; }
}

@media (max-width: 420px) {
  .btn { width: 100%; }
  .hero__actions { flex-direction: column; }
}