/* SENTR Solutions — site styles */
:root {
  --ink: #0b1220;
  --ink-2: #3b4658;
  --ink-3: #6a7588;
  --paper: #ffffff;
  --paper-2: #f3f6fa;
  --line: #dde3ec;
  --blue: #0b5cb5;          /* logo blue */
  --blue-deep: #063e7d;
  --blue-bright: #3f9bff;
  --night: #050a14;
  --night-2: #0b1424;
  --night-line: rgba(120, 170, 255, 0.16);
  --night-ink: #e7eefa;
  --night-ink-2: #a8b6cc;
  --radius: 14px;
  --max: 1160px;
  --head: "Lexend", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
h1, h2, h3, h4 { font-family: var(--head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 600; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--blue); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 12px; top: 12px; }
:focus-visible { outline: 3px solid var(--blue-bright); outline-offset: 3px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand img { height: 40px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  font-family: var(--head); font-size: .95rem; font-weight: 500;
  color: var(--ink); text-decoration: none; padding: 8px 14px; border-radius: 8px;
}
.nav a:hover { background: var(--paper-2); }
.nav a[aria-current="page"] { color: var(--blue); }
.nav a.nav-ai { color: var(--blue); }
.nav a.nav-cta { background: var(--blue); color: #fff; margin-left: 8px; }
.nav a.nav-cta:hover { background: var(--blue-deep); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px 0; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 8px; }
  .nav a.nav-cta { margin: 8px 0 0; text-align: center; }
  .brand img { height: 32px; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--head); font-weight: 500; font-size: 1rem;
  padding: 14px 24px; border-radius: 10px; text-decoration: none;
  border: 1.5px solid transparent; transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--paper-2); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; }
.btn-outline { border-color: var(--blue); color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn .arrow { transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- dark sections ---------- */
.dark {
  background: var(--night); color: var(--night-ink);
  position: relative; overflow: hidden;
}
.dark p { color: var(--night-ink-2); }
.dark a:not(.btn) { color: var(--blue-bright); }
.grid-bg::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--night-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--night-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
}
.glow::after {
  content: ""; position: absolute; width: 720px; height: 720px; right: -200px; top: -260px;
  background: radial-gradient(circle, rgba(11,92,181,.55), transparent 65%);
  pointer-events: none;
}
.dark > .wrap { position: relative; z-index: 1; }

/* ---------- hero ---------- */
.hero { padding: 104px 0 96px; }
.eyebrow {
  display: inline-block; font-family: var(--mono); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 18px;
}
.dark .eyebrow { color: var(--blue-bright); }
.hero h1 .accent { color: var(--blue-bright); display: block; }
.hero .lede { font-size: clamp(1.08rem, 1.6vw, 1.28rem); max-width: 720px; color: var(--night-ink-2); margin-bottom: 36px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 48px; padding: 0; list-style: none; }
.hero-tags li {
  font-family: var(--mono); font-size: .82rem; color: var(--night-ink);
  border: 1px solid var(--night-line); background: rgba(255,255,255,.03);
  padding: 7px 12px; border-radius: 999px;
}
.hero-tags li::before { content: "● "; color: var(--blue-bright); font-size: .7em; vertical-align: 2px; }

/* ---------- generic sections ---------- */
section { padding: 96px 0; }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head p { font-size: 1.1rem; color: var(--ink-2); }
.dark .section-head p { color: var(--night-ink-2); }
.tint { background: var(--paper-2); }

.cards { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column;
}
.card p { color: var(--ink-2); font-size: .98rem; }
.card .card-link { margin-top: auto; font-family: var(--head); font-weight: 500; text-decoration: none; }
.card .card-link:hover { text-decoration: underline; }
.dark .card { background: var(--night-2); border-color: var(--night-line); }
.dark .card p { color: var(--night-ink-2); }
.num {
  font-family: var(--mono); font-size: .8rem; color: var(--blue);
  display: inline-block; margin-bottom: 12px; letter-spacing: .08em;
}
.dark .num { color: var(--blue-bright); }
.icon {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(11,92,181,.1); color: var(--blue); margin-bottom: 18px;
}
.dark .icon { background: rgba(63,155,255,.12); color: var(--blue-bright); }
.icon svg { width: 22px; height: 22px; }

/* ---------- AI feature band on home ---------- */
.ai-band { padding: 104px 0; }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 40px; } }
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .pillars { grid-template-columns: 1fr; } }
.pillar {
  border: 1px solid var(--night-line); background: rgba(255,255,255,.03);
  border-radius: 12px; padding: 20px;
}
.pillar h3 { font-size: 1.05rem; margin-bottom: 4px; color: #fff; }
.pillar p { font-size: .92rem; margin: 0; }
.models { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 32px; padding: 0; list-style: none; }
.models li {
  font-family: var(--mono); font-size: .85rem; padding: 6px 12px; border-radius: 8px;
  background: rgba(63,155,255,.12); color: #cfe3ff;
}
.light-models li { background: rgba(11,92,181,.08); color: var(--blue-deep); }

/* ---------- products ---------- */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .products { grid-template-columns: 1fr; } }
.product { position: relative; }
.product .tier { font-family: var(--mono); font-size: .75rem; letter-spacing: .14em; color: var(--ink-3); text-transform: uppercase; }
.product h3 { font-size: 1.5rem; margin: 6px 0 8px; }
.product ul { margin: 16px 0 0; padding: 16px 0 0; border-top: 1px solid var(--line); list-style: none; }
.product li { padding: 6px 0 6px 26px; position: relative; color: var(--ink-2); font-size: .96rem; }
.product li::before {
  content: ""; position: absolute; left: 0; top: 13px; width: 14px; height: 8px;
  border-left: 2px solid var(--blue); border-bottom: 2px solid var(--blue); transform: rotate(-45deg);
}
.product.featured { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue); }

/* ---------- security layers ---------- */
.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 900px) { .modes { grid-template-columns: 1fr; } }
.mode { border: 1px solid var(--night-line); border-radius: var(--radius); padding: 28px; background: var(--night-2); }
.mode-top { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.badge {
  font-family: var(--mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 6px; border: 1px solid currentColor;
}
.badge.off { color: #ff8a8a; }
.badge.gate { color: #7fd1a8; }
.perimeter {
  display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: .8rem;
  color: var(--night-ink-2); padding: 12px 14px; border: 1px dashed var(--night-line); border-radius: 10px; margin-bottom: 16px;
}
.perimeter b { color: var(--night-ink); font-weight: 500; }
.layers { list-style: none; margin: 0; padding: 0; counter-reset: layer; }
.layers li {
  counter-increment: layer; position: relative; padding: 16px 0 16px 52px;
  border-top: 1px solid var(--night-line);
}
.layers li::before {
  content: counter(layer); position: absolute; left: 0; top: 16px;
  width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center;
  font-family: var(--mono); font-size: .9rem; color: var(--blue-bright); background: rgba(63,155,255,.12);
}
.layers h3 { font-size: 1.02rem; color: #fff; margin-bottom: 4px; }
.layers p { font-size: .93rem; margin: 0; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; list-style: none; padding: 0; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; gap: 24px 0; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.steps li { padding: 0 24px 0 0; position: relative; }
.steps .step-n { font-family: var(--mono); font-size: 2rem; color: var(--blue); display: block; line-height: 1; margin-bottom: 14px; }
.steps .bar { height: 2px; background: var(--line); margin-bottom: 18px; position: relative; }
.steps .bar::after { content: ""; position: absolute; left: 0; top: -4px; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); }
.steps h3 { margin-bottom: 4px; }
.steps p { color: var(--ink-2); font-size: .96rem; }
.callout {
  margin-top: 48px; padding: 28px 32px; border-left: 4px solid var(--blue);
  background: #fff; border-radius: 0 var(--radius) var(--radius) 0; font-size: 1.08rem; color: var(--ink-2);
}

/* ---------- team grid ---------- */
.team { display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 20px; align-items: stretch; }
@media (max-width: 900px) { .team { grid-template-columns: 1fr; } }
.team .card ul { margin: 8px 0 0; padding-left: 18px; color: var(--ink-2); }
.team .core { background: var(--blue); color: #fff; border-color: var(--blue); }
.team .core p, .team .core li { color: #dbe9ff; }
.team .core .num { color: #bcd8ff; }

/* ---------- AMD partnership ---------- */
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .trio { grid-template-columns: 1fr; } }
.trio ul { margin: 6px 0 0; padding-left: 18px; color: var(--night-ink-2); }
.trio li { margin: 6px 0; }
.trio .together { border-color: var(--blue-bright); }

/* ---------- about / industries ---------- */
.industries { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .industries { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .industries { grid-template-columns: 1fr; } }
.industry {
  padding: 22px; border-radius: 12px; border: 1px solid var(--line); background: #fff;
  font-family: var(--head); font-weight: 500;
}
.industry span { display: block; font-family: var(--mono); font-size: .75rem; color: var(--blue); margin-bottom: 8px; letter-spacing: .1em; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  background: var(--night-2); border: 1px solid var(--night-line); border-radius: var(--radius); padding: 32px;
}
.contact-card dl { margin: 0; }
.contact-card dt { font-family: var(--mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--night-ink-2); margin-top: 18px; }
.contact-card dt:first-child { margin-top: 0; }
.contact-card dd { margin: 4px 0 0; font-size: 1.1rem; color: #fff; }
.contact-card dd a { color: #fff; text-decoration: none; border-bottom: 1px solid var(--night-line); }
.contact-card dd a:hover { border-color: var(--blue-bright); }

/* ---------- page header (inner pages) ---------- */
.page-hero { padding: 88px 0 72px; }
.page-hero .lede { font-size: 1.2rem; max-width: 760px; color: var(--night-ink-2); }

/* ---------- services detail ---------- */
.service-list { display: grid; gap: 20px; }
.service {
  display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 32px;
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
}
@media (max-width: 600px) { .service { grid-template-columns: 1fr; gap: 12px; padding: 24px; } }
.service p { color: var(--ink-2); margin: 0; }

/* ---------- footer ---------- */
.site-footer { background: var(--night); color: var(--night-ink-2); padding: 64px 0 32px; font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-mark { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-mark img { width: 40px; height: 40px; }
.footer-mark strong { font-family: var(--head); color: #fff; font-size: 1.1rem; font-weight: 600; letter-spacing: .02em; }
.site-footer h4 { font-family: var(--mono); font-weight: 400; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--night-ink-2); margin-bottom: 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 8px 0; }
.site-footer a { color: var(--night-ink); text-decoration: none; }
.site-footer a:hover { color: var(--blue-bright); }
.footer-base { border-top: 1px solid var(--night-line); margin-top: 48px; padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: .85rem; }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.in { opacity: 1; transform: none; }
}

/* two-up card grid inside split layouts */
.split .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 560px) { .split .cards { grid-template-columns: 1fr; } }
.split .cards[style*="grid-template-columns:1fr"] { grid-template-columns: 1fr; }

/* ---------- forms ---------- */
.site-form {
  background: var(--night-2); border: 1px solid var(--night-line); border-radius: var(--radius);
  padding: 32px; display: grid; gap: 16px; min-width: 0;
}
.site-form h3 { color: #fff; font-size: 1.3rem; margin: 0; }
.field { display: grid; gap: 6px; min-width: 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } .site-form { padding: 22px; } }
.field label { font-family: var(--head); font-size: .9rem; font-weight: 500; color: var(--night-ink); }
.field label span[aria-hidden] { color: var(--blue-bright); }
.hint { font-family: var(--body); font-weight: 400; font-size: .85rem; color: var(--night-ink-2); }
.site-form input[type=text], .site-form input[type=email], .site-form input[type=tel], .site-form textarea {
  width: 100%; font: inherit; font-size: 1rem; color: #fff; background: rgba(255,255,255,.04);
  border: 1px solid rgba(160,190,240,.28); border-radius: 10px; padding: 12px 14px;
}
.site-form textarea { resize: vertical; }
.site-form input[type=file] { font: inherit; font-size: .9rem; color: var(--night-ink-2); max-width: 100%; }
.site-form input:focus, .site-form textarea:focus { outline: none; border-color: var(--blue-bright); box-shadow: 0 0 0 3px rgba(63,155,255,.25); }
.site-form .check { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; color: var(--night-ink-2); }
.site-form .check input { margin-top: 5px; accent-color: var(--blue-bright); }
.site-form button { justify-self: start; border: 0; cursor: pointer; }
.site-form button[disabled] { opacity: .6; cursor: progress; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.turnstile-slot:empty { display: none; }
.form-status { margin: 0; font-size: .95rem; min-height: 1.2em; }
.form-status.ok { color: #7fd1a8; }
.form-status.err { color: #ff9b9b; }
.field input[aria-invalid="true"] { border-color: #ff9b9b; }

/* light variant (careers) */
.site-form.light { background: #fff; border-color: var(--line); }
.site-form.light h2 { margin: 0; }
.site-form.light p { color: var(--ink-2); margin: 0; }
.site-form.light .field label { color: var(--ink); }
.site-form.light .field label span[aria-hidden] { color: var(--blue); }
.site-form.light .hint, .site-form.light input[type=file] { color: var(--ink-3); }
.site-form.light input[type=text], .site-form.light input[type=email], .site-form.light input[type=tel], .site-form.light textarea {
  color: var(--ink); background: var(--paper-2); border-color: var(--line);
}
.site-form.light input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,92,181,.18); }
.site-form.light .form-status.ok { color: #157347; }
.site-form.light .form-status.err { color: #b42318; }

/* floating contact button (stands in for the old chat bubble) */
.float-contact {
  position: fixed; right: max(20px, env(safe-area-inset-right, 0px)); bottom: max(20px, env(safe-area-inset-bottom, 0px)); z-index: 40;
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 999px;
  background: var(--blue); color: #fff; text-decoration: none; font-family: var(--head); font-weight: 500; font-size: .95rem;
  box-shadow: 0 10px 30px rgba(5,10,20,.35);
}
.float-contact:hover { background: var(--blue-deep); }
.float-contact svg { width: 18px; height: 18px; }

/* ---------- service photos ---------- */
.service.has-photo { grid-template-columns: minmax(0, 360px) 1fr; align-items: center; padding: 20px; }
.service.has-photo .photo { border-radius: 10px; overflow: hidden; aspect-ratio: 12 / 7; background: var(--paper-2); }
.service.has-photo .photo img { width: 100%; height: 100%; object-fit: cover; }
.service.has-photo .body { padding: 8px 12px; min-width: 0; }
.service.has-photo .icon { margin-bottom: 12px; }
@media (max-width: 760px) { .service.has-photo { grid-template-columns: 1fr; } }
.careers-photo { border-radius: var(--radius); overflow: hidden; aspect-ratio: 12 / 7; }
.careers-photo img { width: 100%; height: 100%; object-fit: cover; }
.card.has-img { padding-top: 0; overflow: hidden; }
.card.has-img .card-img { margin: 0 -28px 20px; width: calc(100% + 56px); max-width: none; aspect-ratio: 12 / 7; object-fit: cover; }
.card.has-img .icon { margin-top: -42px; position: relative; background: #fff; box-shadow: 0 4px 14px rgba(5,10,20,.15); }


/* product tiles: Solo and Cluster use the same logo-blue border as Team */
.product.tier-solo { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue); }
.product.tier-cluster { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue); }