/* =========================================================================
   Arcom Security Solutions — static rebuild
   Design system. Mobile-first. No build dependency to render.
   Palette: deep navy ink + single signal-red accent, disciplined elsewhere.
   Type: Archivo (display) / IBM Plex Sans (body) / IBM Plex Mono (labels).
   ========================================================================= */

:root{
  --ink:      #0e1626;   /* near-black navy, base text + dark sections */
  --ink-2:    #16233a;   /* raised dark surface */
  --steel:    #46566f;   /* secondary text */
  --mute:     #7a89a1;   /* captions, meta */
  --line:     #e3e8f0;   /* hairlines / borders */
  --paper:    #ffffff;   /* base surface */
  --paper-2:  #f5f7fa;   /* alt section surface */
  --accent:   #d8232a;   /* signal red — alarms, CTAs, active state */
  --accent-d: #b01c22;   /* pressed */
  --focus:    #2b6cff;   /* keyboard focus ring */

  --maxw: 1160px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --radius: 4px;

  --f-display: "Archivo", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } *{ animation:none!important; transition:none!important; } }

body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.62;
  font-size:clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; }
h1,h2,h3,h4{ font-family:var(--f-display); font-weight:700; line-height:1.08; letter-spacing:-0.015em; margin:0 0 .5em; }
p{ margin:0 0 1rem; }
ul{ margin:0 0 1rem; padding-left:1.15rem; }
li{ margin:.28rem 0; }

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

/* eyebrow / mono label — the small technical "status" voice of the brand */
.eyebrow{
  font-family:var(--f-mono);
  font-size:.72rem; font-weight:500;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--accent);
  display:inline-flex; align-items:center; gap:.55rem;
  margin:0 0 1rem;
}
.eyebrow::before{ content:""; width:1.6rem; height:2px; background:var(--accent); display:inline-block; }
.eyebrow.on-dark{ color:#ff5a60; }
.eyebrow.on-dark::before{ background:#ff5a60; }

:where(a,button,input,textarea):focus-visible{
  outline:3px solid var(--focus); outline-offset:2px; border-radius:2px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.5rem;
  font-family:var(--f-display); font-weight:600; font-size:.95rem;
  letter-spacing:.01em; text-decoration:none; cursor:pointer;
  padding:.8rem 1.4rem; border-radius:var(--radius);
  border:1.5px solid transparent; transition:transform .12s ease, background .15s ease, border-color .15s ease;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-d); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-ghost.on-dark{ color:#fff; border-color:rgba(255,255,255,.35); }
.btn-ghost.on-dark:hover{ border-color:#fff; }

/* =========================================================================
   Header
   ========================================================================= */
.topbar{ background:var(--ink); color:#c9d3e4; font-family:var(--f-mono); font-size:.74rem; letter-spacing:.03em; }
.topbar .wrap{ display:flex; flex-wrap:wrap; gap:.4rem 1.6rem; align-items:center; padding-top:.5rem; padding-bottom:.5rem; }
.topbar a{ text-decoration:none; color:#c9d3e4; }
.topbar a:hover{ color:#fff; }
.topbar .tb-item{ display:inline-flex; align-items:center; gap:.45rem; }
.topbar .tb-item b{ color:#fff; font-weight:600; }
.topbar .tb-spacer{ margin-left:auto; }

.site-header{ position:sticky; top:0; z-index:60; background:rgba(255,255,255,.92); backdrop-filter:saturate(1.4) blur(8px); border-bottom:1px solid var(--line); }
.nav{ display:flex; align-items:center; gap:1rem; min-height:66px; }
.brand{ display:inline-flex; align-items:baseline; gap:.55rem; text-decoration:none; margin-right:auto; }
.brand .mark{ font-family:var(--f-display); font-weight:800; font-size:1.4rem; letter-spacing:-.02em; color:var(--ink); }
.brand .mark span{ color:var(--accent); }
.brand .sub{ font-family:var(--f-mono); font-size:.6rem; letter-spacing:.22em; text-transform:uppercase; color:var(--mute); }
.brand img{ height:34px; width:auto; }

.menu{ display:flex; align-items:center; gap:.15rem; list-style:none; margin:0; padding:0; }
.menu > li{ position:relative; margin:0; }
.menu a{
  display:block; text-decoration:none; color:var(--ink);
  font-family:var(--f-display); font-weight:500; font-size:.92rem;
  padding:.55rem .7rem; border-radius:var(--radius);
}
.menu a:hover{ color:var(--accent); }
.menu a[aria-current="page"]{ color:var(--accent); }
.menu .has-sub > a::after{ content:"›"; margin-left:.3rem; color:var(--mute); }
.submenu{
  position:absolute; top:100%; left:0; min-width:230px;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:0 12px 34px rgba(14,22,38,.12);
  list-style:none; margin:.4rem 0 0; padding:.35rem;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity .14s ease, transform .14s ease, visibility .14s;
}
.menu .has-sub:hover .submenu, .menu .has-sub:focus-within .submenu{ opacity:1; visibility:visible; transform:none; }
.submenu a{ font-weight:400; font-size:.88rem; padding:.5rem .7rem; }
.submenu a:hover{ background:var(--paper-2); }

.nav .cta{ margin-left:.4rem; }
.nav .lang{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.08em; display:flex; gap:.3rem; align-items:center; color:var(--mute); }
.nav .lang a{ text-decoration:none; padding:.2rem .35rem; border-radius:3px; }
.nav .lang a[aria-current]{ color:var(--accent); font-weight:600; }

.burger{ display:none; margin-left:.4rem; width:44px; height:40px; border:1px solid var(--line); border-radius:var(--radius); background:#fff; cursor:pointer; align-items:center; justify-content:center; }
.burger span, .burger span::before, .burger span::after{ content:""; display:block; width:20px; height:2px; background:var(--ink); position:relative; transition:transform .18s ease, opacity .18s ease; }
.burger span::before{ position:absolute; top:-6px; } .burger span::after{ position:absolute; top:6px; }
body.nav-open .burger span{ background:transparent; }
body.nav-open .burger span::before{ transform:translateY(6px) rotate(45deg); }
body.nav-open .burger span::after{ transform:translateY(-6px) rotate(-45deg); }

/* mobile nav */
@media (max-width: 940px){
  .burger{ display:inline-flex; }
  .nav .cta.desktop-only, .nav .lang{ display:none; }
  .menu{
    position:fixed; inset:0 0 0 auto; width:min(88vw,360px);
    flex-direction:column; align-items:stretch; gap:0;
    background:#fff; padding:5rem 1.1rem 2rem; overflow-y:auto;
    transform:translateX(100%); transition:transform .22s ease;
    box-shadow:-20px 0 50px rgba(14,22,38,.18); z-index:55;
  }
  body.nav-open .menu{ transform:none; }
  .menu a{ padding:.85rem .4rem; font-size:1.02rem; border-bottom:1px solid var(--line); }
  .menu .has-sub > a::after{ display:none; }
  .submenu{ position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:0; padding:.1rem 0 .3rem .8rem; margin:0; }
  .submenu a{ border-bottom:1px dashed var(--line); }
  .nav-scrim{ position:fixed; inset:0; background:rgba(14,22,38,.4); opacity:0; visibility:hidden; transition:opacity .2s; z-index:54; }
  body.nav-open .nav-scrim{ opacity:1; visibility:visible; }
}

/* =========================================================================
   Sections / layout primitives
   ========================================================================= */
.section{ padding-block:clamp(3rem, 7vw, 5.5rem); }
.section.tight{ padding-block:clamp(2rem, 5vw, 3.5rem); }
.section.alt{ background:var(--paper-2); }
.section.dark{ background:var(--ink); color:#d7deea; }
.section.dark h2, .section.dark h3{ color:#fff; }
.section-head{ max-width:64ch; margin-bottom:2.2rem; }
.section-head h2{ font-size:clamp(1.6rem, 1.2rem + 2vw, 2.4rem); }
.lead{ font-size:1.12rem; color:var(--steel); }
.section.dark .lead{ color:#aeb9cd; }

/* =========================================================================
   Hero
   ========================================================================= */
.hero{ background:radial-gradient(1200px 500px at 78% -10%, #1c2f4d 0%, var(--ink) 55%); color:#fff; position:relative; overflow:hidden; }
.hero::after{ /* faint technical grid — the "monitoring" motif */
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.5;
  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:linear-gradient(180deg, #000, transparent 85%);
}
.hero .wrap{ position:relative; z-index:1; padding-block:clamp(3.4rem, 8vw, 6.5rem); }
.hero h1{ font-size:clamp(2.1rem, 1.3rem + 4.4vw, 4rem); max-width:16ch; }
.hero h1 em{ font-style:normal; color:#7fb0ff; }
.hero .lead{ color:#b9c6dc; max-width:52ch; font-size:clamp(1.05rem,1rem + .4vw,1.25rem); }
.hero-actions{ display:flex; flex-wrap:wrap; gap:.8rem; margin-top:1.8rem; }
.hero-stats{ display:flex; flex-wrap:wrap; gap:1.4rem 2.6rem; margin-top:2.8rem; padding-top:1.8rem; border-top:1px solid rgba(255,255,255,.14); }
.hero-stats .stat b{ display:block; font-family:var(--f-display); font-size:clamp(1.5rem,1.1rem + 1.6vw,2.1rem); color:#fff; line-height:1; }
.hero-stats .stat span{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:#8fa0bd; }

/* =========================================================================
   Service cards — control-panel styling w/ mono index + active indicator
   ========================================================================= */
.grid{ display:grid; gap:1.1rem; }
.grid.cols-2{ grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.grid.cols-3{ grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); }

.card{
  position:relative; display:flex; flex-direction:column;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:1.4rem 1.4rem 1.5rem; text-decoration:none; color:inherit;
  transition:border-color .16s ease, transform .16s ease, box-shadow .16s ease;
  overflow:hidden;
}
.card::before{ content:""; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--accent); transform:scaleY(0); transform-origin:top; transition:transform .18s ease; }
.card:hover{ transform:translateY(-3px); border-color:#cfd8e6; box-shadow:0 16px 40px rgba(14,22,38,.09); }
.card:hover::before{ transform:scaleY(1); }
.card .idx{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.12em; color:var(--mute); }
.card h3{ font-size:1.18rem; margin:.5rem 0 .5rem; }
.card p{ color:var(--steel); font-size:.96rem; margin:0; }
.card .more{ margin-top:1rem; font-family:var(--f-display); font-weight:600; font-size:.9rem; color:var(--accent); }
.card .more::after{ content:" →"; }

/* logos / certifications strip */
.logos{ display:flex; flex-wrap:wrap; align-items:center; gap:1.4rem 2.4rem; }
.logos img{ height:46px; width:auto; opacity:.72; filter:grayscale(1); transition:opacity .2s, filter .2s; }
.logos img:hover{ opacity:1; filter:none; }
.logo-fallback{ font-family:var(--f-mono); font-size:.8rem; color:var(--mute); border:1px dashed var(--line); border-radius:3px; padding:.7rem 1rem; }

/* =========================================================================
   Article / interior content
   ========================================================================= */
.page-head{ background:var(--ink-2); color:#fff; }
.page-head .wrap{ padding-block:clamp(2.2rem,5vw,3.4rem); }
.page-head h1{ font-size:clamp(1.9rem,1.3rem + 2.6vw,3rem); margin:0; }
.crumbs{ font-family:var(--f-mono); font-size:.74rem; letter-spacing:.06em; color:#93a2bf; margin-bottom:.7rem; }
.crumbs a{ text-decoration:none; color:#93a2bf; } .crumbs a:hover{ color:#fff; }

.layout{ display:grid; grid-template-columns:1fr; gap:2.4rem; }
@media (min-width:900px){ .layout.with-aside{ grid-template-columns:1fr 260px; } }
.prose h2{ font-size:clamp(1.4rem,1.1rem + 1.4vw,1.9rem); margin-top:2.2rem; }
.prose h2:first-child{ margin-top:0; }
.prose h3{ font-size:1.2rem; margin-top:1.6rem; color:var(--ink); }
.prose img{ border-radius:var(--radius); border:1px solid var(--line); margin:1.4rem 0; }
.prose .figrow{ display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1rem; margin:1.4rem 0; }
.prose .figrow img{ margin:0; }
.callout{ border-left:3px solid var(--accent); background:var(--paper-2); padding:1rem 1.2rem; border-radius:0 var(--radius) var(--radius) 0; margin:1.4rem 0; }
.callout ul{ margin:0; }

.aside{ position:sticky; top:86px; align-self:start; }
.aside nav{ border:1px solid var(--line); border-radius:var(--radius); padding:.4rem; }
.aside .aside-title{ font-family:var(--f-mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--mute); padding:.7rem .8rem .4rem; }
.aside a{ display:block; text-decoration:none; color:var(--ink); font-family:var(--f-display); font-weight:500; font-size:.92rem; padding:.55rem .8rem; border-radius:3px; }
.aside a:hover{ background:var(--paper-2); }
.aside a[aria-current="page"]{ color:var(--accent); background:var(--paper-2); }

/* =========================================================================
   Contact + forms
   ========================================================================= */
.contact-grid{ display:grid; gap:2rem; grid-template-columns:1fr; }
@media (min-width:860px){ .contact-grid{ grid-template-columns:1.1fr .9fr; } }
.field{ margin-bottom:1rem; }
.field label{ display:block; font-family:var(--f-display); font-weight:500; font-size:.86rem; margin-bottom:.35rem; }
.field input, .field textarea{
  width:100%; font-family:var(--f-body); font-size:1rem; color:var(--ink);
  padding:.75rem .85rem; border:1.5px solid var(--line); border-radius:var(--radius); background:#fff;
}
.field input:focus, .field textarea:focus{ border-color:var(--focus); outline:none; }
.field textarea{ min-height:130px; resize:vertical; }
.form-note{ font-size:.82rem; color:var(--mute); }
.form-status{ font-size:.9rem; margin-top:.6rem; min-height:1.2em; }
.form-status.ok{ color:#137a3f; } .form-status.err{ color:var(--accent-d); }

.info-block{ border:1px solid var(--line); border-radius:var(--radius); padding:1.2rem 1.3rem; margin-bottom:1rem; background:#fff; }
.info-block h3{ font-size:1rem; margin:0 0 .5rem; }
.info-block .row{ display:flex; gap:.6rem; font-size:.95rem; color:var(--steel); margin:.25rem 0; }
.info-block .row b{ color:var(--ink); font-weight:600; }
.badge-247{ display:inline-block; font-family:var(--f-mono); font-size:.7rem; letter-spacing:.1em; color:#fff; background:var(--accent); padding:.15rem .5rem; border-radius:3px; }

/* CTA band */
.cta-band{ background:var(--accent); color:#fff; }
.cta-band .wrap{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:1.2rem; padding-block:clamp(2rem,4vw,3rem); }
.cta-band h2{ color:#fff; margin:0; font-size:clamp(1.4rem,1.1rem+1.4vw,2rem); max-width:22ch; }
.cta-band .btn-ghost{ color:#fff; border-color:rgba(255,255,255,.6); }
.cta-band .btn-ghost:hover{ background:#fff; color:var(--accent); border-color:#fff; }

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer{ background:var(--ink); color:#9fadc4; font-size:.92rem; }
.site-footer .wrap{ padding-block:clamp(2.6rem,5vw,3.6rem); }
.foot-grid{ display:grid; gap:2rem; grid-template-columns:1fr; }
@media (min-width:760px){ .foot-grid{ grid-template-columns:1.4fr 1fr 1.2fr; } }
.site-footer h4{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:#6f7f9c; margin:0 0 .9rem; }
.site-footer a{ color:#c3cddd; text-decoration:none; } .site-footer a:hover{ color:#fff; }
.site-footer ul{ list-style:none; margin:0; padding:0; } .site-footer li{ margin:.35rem 0; }
.foot-brand .mark{ font-family:var(--f-display); font-weight:800; font-size:1.3rem; color:#fff; }
.foot-brand .mark span{ color:var(--accent); }
.news-form{ display:flex; gap:.5rem; margin-top:.6rem; }
.news-form input{ flex:1; padding:.6rem .7rem; border:1px solid #2a3854; border-radius:var(--radius); background:var(--ink-2); color:#fff; }
.news-form button{ white-space:nowrap; }
.foot-bottom{ border-top:1px solid #22314c; margin-top:2.2rem; padding-top:1.3rem; display:flex; flex-wrap:wrap; gap:.4rem 1.4rem; justify-content:space-between; font-size:.8rem; color:#6f7f9c; }
.foot-bottom a{ color:#8798b4; }

.skip{ position:absolute; left:-999px; top:0; background:#fff; color:var(--ink); padding:.6rem 1rem; z-index:100; }
.skip:focus{ left:.5rem; top:.5rem; }

/* sub-pages in the side-nav, FAQ accordion */
.aside a.sub{ padding-left:1.6rem; font-size:.86rem; font-weight:400; }
.faq{ border:1px solid var(--line); border-radius:var(--radius); margin:.7rem 0; background:#fff; }
.faq summary{ cursor:pointer; padding:.9rem 1.1rem; font-family:var(--f-display); font-weight:600; color:var(--ink); }
.faq[open] summary{ border-bottom:1px solid var(--line); }
.faq .faq-a{ padding:.2rem 1.1rem 1rem; }