/* ===================================================================
   SENTRYX — base template
   Design tokens derived from the brand moodboard (shield/check mark,
   navy · teal · slate, Swiss precision).
=================================================================== */

:root{
  /* --- brand colour tokens --- */
  --navy-950:#050f21;
  --navy-900:#071f41;
  --navy-800:#0d2c56;
  --teal-500:#2a6669;
  --teal-400:#3f8a86;
  --teal-300:#7cb3ab;
  --slate-500:#515863;
  --slate-300:#9aa1ac;
  --paper-50:#f5f6f8;
  --paper-100:#eceef2;
  --white:#ffffff;

  --ink:#0d1b2f;         /* body text on light */
  --ink-soft:#4a5568;

  /* --- type --- */
  --font-display:'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body:'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:'IBM Plex Mono', 'Courier New', monospace;

  /* --- layout --- */
  --wrap:1180px;
  --gutter:clamp(1.25rem, 4vw, 3rem);
  --radius:14px;
  --radius-sm:8px;

  /* --- motion --- */
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur-fast:.2s;
  --dur-med:.5s;
  --dur-slow:1s;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ------------------------------------------------------------------ */
/* Reset                                                               */
/* ------------------------------------------------------------------ */
*, *::before, *::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper-50);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3{ font-family:var(--font-display); font-weight:600; line-height:1.08; margin:0 0 .6em; letter-spacing:-0.01em; }
p{ margin:0 0 1em; color:var(--ink-soft); line-height:1.65; }
button{ font-family:inherit; }

.wrap{
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{ padding-block:clamp(4.5rem, 9vw, 8rem); position:relative; }

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--navy-900); color:#fff;
  padding:.75em 1.25em; z-index:999; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

:focus-visible{ outline:2px solid var(--teal-400); outline-offset:3px; }

.noise-overlay{
  position:fixed; inset:0; pointer-events:none; z-index:1000; opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

/* ------------------------------------------------------------------ */
/* Buttons                                                             */
/* ------------------------------------------------------------------ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5em;
  font-family:var(--font-body); font-weight:600; font-size:.95rem;
  padding:.9em 1.7em; border-radius:999px; border:1px solid transparent;
  cursor:pointer; transition:transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn:active{ transform:translateY(0); }
.btn-primary{ background:var(--teal-500); color:#fff; }
.btn-primary:hover{ background:var(--teal-400); }
.btn-outline{ background:transparent; border-color:currentColor; color:var(--navy-900); }
.btn-outline:hover{ background:var(--navy-900); color:#fff; border-color:var(--navy-900); }
.hero .btn-outline{ color:#fff; }
.hero .btn-outline:hover{ background:#fff; color:var(--navy-900); }
.btn-ghost{ background:transparent; border-color:rgba(255,255,255,.35); color:#fff; }
.btn-ghost:hover{ background:rgba(255,255,255,.12); }
.btn-small{ padding:.6em 1.3em; font-size:.85rem; }
.btn-block{ width:100%; }

.eyebrow{
  display:inline-flex; align-items:center; gap:.6em;
  font-family:var(--font-mono); font-size:.78rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--teal-300); margin-bottom:1.2em;
}
.eyebrow-dark{ color:var(--teal-500); }
.eyebrow .dot{
  width:7px; height:7px; border-radius:50%; background:var(--teal-400);
  box-shadow:0 0 0 0 rgba(63,138,134,.55);
  animation:pulse-ring 2.4s var(--ease) infinite;
}

@keyframes pulse-ring{
  0%{ box-shadow:0 0 0 0 rgba(63,138,134,.5); }
  70%{ box-shadow:0 0 0 8px rgba(63,138,134,0); }
  100%{ box-shadow:0 0 0 0 rgba(63,138,134,0); }
}

.pulse{
  display:inline-block; width:7px; height:7px; border-radius:50%; background:var(--teal-400);
  margin-right:.6em; position:relative;
}
.pulse::after{
  content:''; position:absolute; inset:-4px; border-radius:50%; border:1px solid var(--teal-400);
  animation:pulse-ring2 2.2s var(--ease) infinite;
}
@keyframes pulse-ring2{
  0%{ transform:scale(.6); opacity:.9; }
  100%{ transform:scale(1.9); opacity:0; }
}

/* ------------------------------------------------------------------ */
/* Header                                                              */
/* ------------------------------------------------------------------ */
.site-header{
  position:fixed; inset-block-start:0; inset-inline:0; z-index:500;
  padding-block:1.35rem;
  transition:background var(--dur-med) var(--ease), padding var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), backdrop-filter var(--dur-med) var(--ease);
}
.site-header.is-scrolled{
  padding-block:.85rem;
  background:rgba(7,31,65,.82);
  backdrop-filter:blur(14px);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.6);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:2rem; }

.brand{ display:flex; align-items:center; gap:.65em; flex-shrink:0; }
.brand-mark{ width:34px; height:34px; }
.brand-word{
  font-family:var(--font-display); font-weight:700; font-size:1.15rem;
  letter-spacing:.12em; color:#fff;
}
.brand-word .accent{ color:var(--teal-400); }

.main-nav{ display:flex; align-items:center; gap:2.2rem; }
.main-nav ul{ display:flex; align-items:center; gap:1.9rem; }
.main-nav a:not(.btn){
  display:inline-flex; align-items:baseline; gap:.5em;
  font-size:.92rem; font-weight:500; color:rgba(255,255,255,.82);
  position:relative; padding-block:.2em;
}
.main-nav a:not(.btn) .idx{ font-family:var(--font-mono); font-size:.72rem; color:var(--teal-400); }
.main-nav a:not(.btn)::after{
  content:''; position:absolute; left:0; right:100%; bottom:-2px; height:1px; background:var(--teal-400);
  transition:right var(--dur-fast) var(--ease);
}
.main-nav a:not(.btn):hover{ color:#fff; }
.main-nav a:not(.btn):hover::after{ right:0; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:40px; height:40px; border:0; background:transparent; cursor:pointer; z-index:600;
}
.nav-toggle span{ width:100%; height:2px; background:#fff; border-radius:2px; transition:transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease); }
.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 / Presentation                                                 */
/* ------------------------------------------------------------------ */
.hero{
  min-height:100vh; display:flex; flex-direction:column; justify-content:center;
  background:linear-gradient(175deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color:#fff; padding-top:7rem; overflow:hidden;
}
.hero-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 90%);
}
.hero-glow{
  position:absolute; width:60vw; height:60vw; max-width:900px; max-height:900px;
  right:-15%; top:-10%;
  background:radial-gradient(circle, rgba(42,102,105,.35) 0%, rgba(42,102,105,0) 65%);
  filter:blur(10px);
}

.hero-inner{
  display:grid; grid-template-columns:1.1fr .7fr; align-items:center; gap:3rem;
  position:relative; z-index:2; flex:1;
}
.hero-title{
  font-size:clamp(2.3rem, 4.6vw, 3.8rem);
  max-width:14ch;
}
.hero-sub{ max-width:46ch; font-size:1.08rem; color:rgba(255,255,255,.72); }
.hero-actions{ display:flex; gap:1rem; flex-wrap:wrap; margin-top:2rem; }

.hero-mark{ position:relative; display:flex; align-items:center; justify-content:center; }
.hero-shield{
  width:clamp(150px, 20vw, 240px);
  filter:drop-shadow(0 20px 40px rgba(0,0,0,.45));
  animation:shield-in 1.1s var(--ease) both;
  animation-delay:.15s;
}
@keyframes shield-in{
  from{ opacity:0; transform:scale(.75) translateY(14px); }
  to{ opacity:1; transform:scale(1) translateY(0); }
}
.radar{
  position:absolute; width:clamp(220px, 30vw, 360px); aspect-ratio:1;
  border-radius:50%; border:1px solid rgba(124,179,171,.25);
}
.radar::before, .radar::after{
  content:''; position:absolute; inset:0; border-radius:50%;
  border:1px solid rgba(124,179,171,.18);
}
.radar::before{ inset:18%; }
.radar::after{
  inset:0; background:conic-gradient(from 0deg, rgba(124,179,171,.5), transparent 28%);
  animation:spin 6s linear infinite;
  -webkit-mask:radial-gradient(circle, transparent 58%, #000 59%);
          mask:radial-gradient(circle, transparent 58%, #000 59%);
}
@keyframes spin{ to{ transform:rotate(360deg); } }

/* status ticker — signature element */
.status-ticker{
  position:relative; z-index:2; border-top:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.03); margin-top:auto;
}
.status-ticker-inner{
  max-width:var(--wrap); margin-inline:auto; padding:1rem var(--gutter);
  display:flex; align-items:center; gap:1.5rem; overflow:hidden;
}
.status-label{
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase;
  color:rgba(255,255,255,.45); flex-shrink:0;
}
.status-track{
  display:flex; gap:2.2rem; white-space:nowrap; animation:ticker 22s linear infinite;
}
.status-track li{
  display:inline-flex; align-items:center; font-family:var(--font-mono); font-size:.82rem;
  color:rgba(255,255,255,.75); letter-spacing:.03em;
}
@keyframes ticker{
  from{ transform:translateX(0); }
  to{ transform:translateX(-50%); }
}

/* ------------------------------------------------------------------ */
/* Section head (shared)                                               */
/* ------------------------------------------------------------------ */
.section-head{ max-width:56ch; margin-bottom:3.5rem; }
.section-head h2{ font-size:clamp(1.9rem, 3.4vw, 2.6rem); color:var(--navy-900); }
.section-intro{ font-size:1.05rem; }

/* ------------------------------------------------------------------ */
/* Problem                                                             */
/* ------------------------------------------------------------------ */
.problem{ background:var(--paper-50); }
.problem-grid{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:1.5rem; margin-bottom:3.5rem;
}
.problem-card{
  background:#fff; border:1px solid var(--paper-100); border-radius:var(--radius);
  padding:2rem 1.6rem; transition:transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.problem-card:hover{ transform:translateY(-4px); box-shadow:0 18px 40px -24px rgba(7,31,65,.35); border-color:var(--teal-300); }
.problem-icon{
  display:inline-flex; align-items:center; justify-content:center;
  width:52px; height:52px; border-radius:12px; margin-bottom:1.3rem;
  background:var(--navy-900); color:var(--teal-300);
}
.problem-icon svg{ width:24px; height:24px; }
.problem-card h3{ font-size:1.05rem; color:var(--navy-900); margin-bottom:.5em; }
.problem-card p{ font-size:.92rem; margin:0; }

.readout{
  display:flex; align-items:baseline; gap:1.6rem; flex-wrap:wrap;
  border-top:1px solid var(--paper-100); padding-top:2.4rem;
}
.readout-figure{
  font-family:var(--font-mono); font-weight:500; font-size:clamp(2.6rem, 6vw, 4rem);
  color:var(--navy-900); line-height:1;
}
.readout-unit{ font-size:.5em; color:var(--teal-500); }
.readout p{ max-width:42ch; margin:0; }

/* ------------------------------------------------------------------ */
/* Services & Pricing                                                  */
/* ------------------------------------------------------------------ */
.services{ background:var(--paper-100); }
.pricing-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:1.75rem; align-items:stretch;
}
.price-card{
  position:relative; background:#fff; border:1px solid var(--paper-100);
  border-radius:var(--radius); padding:2.4rem 2rem; display:flex; flex-direction:column;
  transition:transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.price-card:hover{ transform:translateY(-4px); box-shadow:0 22px 44px -28px rgba(7,31,65,.3); }
.price-card-featured{ border-color:var(--teal-500); box-shadow:0 20px 48px -26px rgba(42,102,105,.4); }
.price-badge{
  position:absolute; top:-.85rem; left:2rem; background:var(--teal-500); color:#fff;
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.08em; text-transform:uppercase;
  padding:.35em .9em; border-radius:999px;
}
.price-head h3{ font-size:1.3rem; color:var(--navy-900); margin-bottom:.25em; }
.price-tagline{ font-size:.88rem; margin-bottom:1.4rem; }
.price-amount{
  font-family:var(--font-mono); font-size:2.1rem; color:var(--navy-900); font-weight:500;
  margin-bottom:1.6rem; display:flex; align-items:baseline; gap:.3rem;
}
.price-amount .currency{ font-size:.9rem; color:var(--slate-500); }
.price-amount .period{ font-size:.85rem; font-family:var(--font-body); color:var(--slate-500); font-weight:400; }
.price-features{ margin-bottom:2rem; flex:1; }
.price-features li{
  position:relative; padding-left:1.7em; margin-bottom:.85em; font-size:.92rem; color:var(--ink-soft);
}
.price-features li::before{
  content:''; position:absolute; left:0; top:.35em; width:14px; height:10px;
  border-left:2px solid var(--teal-500); border-bottom:2px solid var(--teal-500);
  transform:rotate(-45deg);
}
.price-note{ margin-top:2.5rem; font-size:.85rem; text-align:center; }

/* ------------------------------------------------------------------ */
/* Contact                                                             */
/* ------------------------------------------------------------------ */
.contact{
  background:linear-gradient(175deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color:#fff;
}
.contact .section-intro, .contact p{ color:rgba(255,255,255,.68); }
.contact h2{ color:#fff; font-size:clamp(1.9rem, 3.4vw, 2.6rem); }
.contact-inner{ display:grid; grid-template-columns:1fr 1fr; gap:4rem; }

.contact-details{ margin-top:2rem; display:flex; flex-direction:column; gap:1.4rem; }
.contact-details li{ display:flex; flex-direction:column; gap:.3em; font-size:.98rem; }
.contact-details a{ color:#fff; border-bottom:1px solid rgba(255,255,255,.25); width:fit-content; }
.contact-details a:hover{ border-color:var(--teal-400); }
.contact-label{
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--teal-300);
}
.status-line{
  display:flex; align-items:center; margin-top:2.2rem; font-family:var(--font-mono);
  font-size:.82rem; color:rgba(255,255,255,.55);
}

.contact-form{
  background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius); padding:2.2rem; backdrop-filter:blur(6px);
}
.form-row{ margin-bottom:1.3rem; display:flex; flex-direction:column; gap:.5em; }
.form-row label{ font-size:.82rem; color:rgba(255,255,255,.65); }
.form-row input, .form-row textarea{
  font-family:var(--font-body); font-size:.95rem; color:#fff;
  background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-sm); padding:.8em 1em; resize:vertical;
  transition:border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.form-row input::placeholder, .form-row textarea::placeholder{ color:rgba(255,255,255,.35); }
.form-row input:focus, .form-row textarea:focus{ border-color:var(--teal-400); background:rgba(255,255,255,.09); outline:none; }

.form-success{
  display:none; margin:1rem 0 0; font-size:.88rem; color:var(--teal-300);
  border-top:1px solid rgba(255,255,255,.12); padding-top:1rem;
}
.form-success.is-visible{ display:block; }

/* ------------------------------------------------------------------ */
/* Footer                                                              */
/* ------------------------------------------------------------------ */
.site-footer{ background:var(--navy-950); color:rgba(255,255,255,.55); padding-block:2.4rem; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap:1.5rem; flex-wrap:wrap; }
.brand-footer .brand-word{ color:rgba(255,255,255,.85); font-size:.95rem; }
.footer-copy{ font-size:.82rem; margin:0; color:rgba(255,255,255,.45); }
.footer-links{ display:flex; gap:1.4rem; }
.footer-links a{ font-size:.82rem; color:rgba(255,255,255,.55); }
.footer-links a:hover{ color:#fff; }
.to-top{
  width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,.18);
  background:transparent; color:#fff; cursor:pointer; transition:background var(--dur-fast) var(--ease);
}
.to-top:hover{ background:rgba(255,255,255,.1); }

/* ------------------------------------------------------------------ */
/* Scroll-reveal utility (JS adds .is-visible)                        */
/* ------------------------------------------------------------------ */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity:1; transform:translateY(0); }
.reveal-stagger > *{ opacity:0; transform:translateY(20px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal-stagger.is-visible > *{ opacity:1; transform:translateY(0); }
.reveal-stagger.is-visible > *:nth-child(1){ transition-delay:.05s; }
.reveal-stagger.is-visible > *:nth-child(2){ transition-delay:.15s; }
.reveal-stagger.is-visible > *:nth-child(3){ transition-delay:.25s; }
.reveal-stagger.is-visible > *:nth-child(4){ transition-delay:.35s; }
.reveal-stagger.is-visible > *:nth-child(5){ transition-delay:.45s; }

/* ------------------------------------------------------------------ */
/* Responsive                                                          */
/* ------------------------------------------------------------------ */
@media (max-width: 980px){
  .problem-grid{ grid-template-columns:repeat(2, 1fr); }
  .pricing-grid{ grid-template-columns:1fr; max-width:440px; margin-inline:auto; }
  .contact-inner{ grid-template-columns:1fr; gap:2.5rem; }
  .hero-inner{ grid-template-columns:1fr; text-align:left; }
  .hero-mark{ order:-1; height:180px; }
}

@media (max-width: 760px){
  .main-nav{
    position:fixed; inset:0 0 0 auto; width:min(320px, 82vw); height:100vh;
    background:var(--navy-900); flex-direction:column; align-items:flex-start;
    padding:6.5rem 2rem 2rem; gap:2.2rem;
    transform:translateX(100%); transition:transform var(--dur-med) var(--ease);
  }
  .main-nav.is-open{ transform:translateX(0); }
  .main-nav ul{ flex-direction:column; align-items:flex-start; gap:1.5rem; }
  .main-nav a:not(.btn){ font-size:1.05rem; }
  .nav-toggle{ display:flex; }
  .nav-cta{ width:100%; justify-content:center; }

  .problem-grid{ grid-template-columns:1fr; }
  .status-ticker-inner{ flex-direction:column; align-items:flex-start; gap:.6rem; }
}