/* =========================================================
   Viaduct Fire Ltd — "Protection Protocol" theme
   ========================================================= */
:root{
  --bg: #0B0D10;
  --bg-raised: #12151A;
  --bg-raised-2: #171B21;
  --border: rgba(245,245,242,0.10);
  --border-strong: rgba(245,245,242,0.18);
  --amber: #F5A623;
  --amber-deep: #D68C12;
  --white: #F5F5F2;
  --grey: #8A93A6;
  --grey-dim: #5B6474;
  --red: #FF6B5E;

  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --max: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--white);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--display); margin:0; line-height:1.08; font-weight:700; }
p{ margin:0; }
.wrap{ max-width:var(--max); margin:0 auto; padding:0 28px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1 !important; transform:none !important; }
}

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

/* =========================================================
   Reveal-on-scroll (flow up from bottom)
   ========================================================= */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in-view{ opacity:1; transform:translateY(0); }
.reveal-right{
  opacity:0;
  transform:translateX(56px);
  transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal-right.in-view{ opacity:1; transform:translateX(0); }
.reveal-delay-1{ transition-delay:.08s; }
.reveal-delay-2{ transition-delay:.16s; }
.reveal-delay-3{ transition-delay:.24s; }
.reveal-delay-4{ transition-delay:.32s; }

/* =========================================================
   Eyebrow labels
   ========================================================= */
.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--amber);
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:16px;
}
.eyebrow::before{ content:"//"; opacity:0.7; }

/* =========================================================
   Header — starts blended over hero, solidifies on scroll
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(11,13,16,0.35);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(8px);
  transition:background .35s ease, border-color .35s ease;
}
.site-header.scrolled{
  background:rgba(11,13,16,0.96);
  border-bottom:1px solid var(--border);
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:78px;
  max-width:1440px;
  padding:0 24px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:38px; height:38px;
  border:1.5px solid var(--amber);
  display:flex; align-items:center; justify-content:center;
  flex:none;
}
.brand-text{ font-family:var(--display); font-weight:700; font-size:18px; letter-spacing:0.01em; line-height:1.15; }
.brand-text small{
  display:block;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:0.18em;
  color:var(--amber);
  font-weight:400;
}

nav.primary-nav{ flex:1; display:flex; justify-content:center; }
nav.primary-nav ul{ display:flex; gap:44px; }
nav.primary-nav a{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:0.09em;
  text-transform:uppercase;
  color:var(--grey);
  padding:10px 2px;
}
nav.primary-nav a:hover{ color:var(--white); }
nav.primary-nav a[aria-current="page"]{ color:var(--amber); }

.nav-toggle{
  display:none;
  background:none;
  border:1px solid var(--border-strong);
  color:var(--white);
  width:42px; height:38px;
  cursor:pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background:var(--white); margin:0 auto; position:relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

@media (max-width:860px){
  .nav-toggle{ display:block; }
  nav.primary-nav{
    position:absolute; top:78px; left:0; right:0;
    background:#0B0D10; border-bottom:1px solid var(--border);
    max-height:0; overflow:hidden; transition:max-height .25s ease;
  }
  nav.primary-nav.open{ max-height:300px; }
  nav.primary-nav ul{ flex-direction:column; gap:0; padding:6px 28px 20px; }
  nav.primary-nav a{ display:block; padding:13px 4px; }
}

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono);
  font-weight:600; font-size:13px; letter-spacing:0.06em; text-transform:uppercase;
  padding:15px 24px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--amber); color:#12100A; box-shadow:0 0 0 rgba(245,166,35,0); }
.btn-primary:hover{ background:#ffb437; box-shadow:0 6px 24px rgba(245,166,35,0.25); }
.btn-outline{ border-color:var(--border-strong); color:var(--white); }
.btn-outline:hover{ border-color:var(--amber); color:var(--amber); }
.btn-urgent{ background:var(--red); color:#1a0a08; }
.btn-urgent:hover{ background:#ff8478; }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position:relative;
  min-height:640px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:radial-gradient(circle at 78% 32%, #1c2129 0%, #0B0D10 60%);
}
.hero-device{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  opacity:0.28;
}
.hero-scrim{
  position:absolute; inset:0;
  background:linear-gradient(100deg, rgba(11,13,16,0.95) 30%, rgba(11,13,16,0.55) 75%);
  animation:scrimFade 1.6s ease forwards;
}
@keyframes scrimFade{
  0%{ background:linear-gradient(100deg, rgba(11,13,16,0.98) 40%, rgba(11,13,16,0.92) 100%); }
  100%{ background:linear-gradient(100deg, rgba(11,13,16,0.92) 30%, rgba(11,13,16,0.5) 75%); }
}
.hero-content{ position:relative; z-index:2; padding:80px 0; max-width:660px; }
.status-pill{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--amber);
  border:1px solid var(--border-strong);
  padding:9px 16px;
  margin-bottom:28px;
}
.status-pill .dot{
  width:7px; height:7px; border-radius:50%; background:var(--amber);
  animation:blink 2.2s ease-in-out infinite;
}
@keyframes blink{ 0%,100%{ opacity:1; } 50%{ opacity:0.25; } }

.hero h1{ font-size:clamp(38px,5.6vw,62px); margin-bottom:24px; text-transform:uppercase; letter-spacing:0.01em; }
.hero h1 .amber{ color:var(--amber); display:block; }
.hero p.lead{ font-size:17.5px; color:var(--grey); max-width:520px; margin-bottom:34px; }
.hero-ctas{ display:flex; gap:14px; flex-wrap:wrap; }

.page-hero{ position:relative; overflow:hidden; padding:68px 0 50px; border-bottom:1px solid var(--border); }
.page-hero-art{ position:absolute; inset:0; z-index:0; }
.page-hero-art svg{ width:100%; height:100%; }
.page-hero .wrap{ position:relative; z-index:2; }
.page-hero h1{ font-size:clamp(34px,4.8vw,50px); text-transform:uppercase; letter-spacing:0.01em; }
.page-hero h1 .amber{ color:var(--amber); }
.page-hero p.lead{ color:var(--grey); max-width:580px; margin-top:16px; font-size:17px; }

/* =========================================================
   Sections
   ========================================================= */
section{ padding:88px 0; }
.section-head{ max-width:640px; margin-bottom:46px; }
.section-head h2{ font-size:clamp(28px,3.6vw,40px); text-transform:uppercase; letter-spacing:0.005em; }
.section-head h2 .amber{ color:var(--amber); }
.section-head p{ margin-top:16px; color:var(--grey); font-size:16.5px; }

/* Panel grid */
.panel-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
@media (max-width:760px){ .panel-grid{ grid-template-columns:1fr; } }

.panel{
  position:relative;
  background:var(--bg-raised);
  border:1px solid var(--border);
  padding:34px 30px;
  transition:background .2s ease, border-color .2s ease;
}
.panel:hover{ background:var(--bg-raised-2); border-color:var(--border-strong); }
.panel .code{
  position:absolute; top:20px; right:24px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.08em;
  color:var(--grey-dim);
}
.icon-swatch{
  width:52px; height:52px;
  border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:20px;
  color:var(--amber);
}
.icon-swatch svg{ width:22px; height:22px; }
.panel h3{ font-size:20px; margin-bottom:12px; }
.panel p{ color:var(--grey); font-size:15px; }
.panel a.panel-link{
  display:inline-flex; align-items:center; gap:8px;
  margin-top:18px; font-family:var(--mono); font-size:12.5px; letter-spacing:0.05em; text-transform:uppercase; color:var(--amber);
  opacity:0; transform:translateX(-6px);
  transition:opacity .2s ease, transform .2s ease;
}
.panel:hover a.panel-link{ opacity:1; transform:translateX(0); }

.view-all{
  display:inline-flex; align-items:center; gap:8px;
  margin-top:40px;
  font-family:var(--mono); font-size:13px; letter-spacing:0.06em; text-transform:uppercase; color:var(--amber);
}
.view-all:hover{ color:#ffb437; }
.center{ text-align:center; }
.center .view-all{ justify-content:center; width:100%; }

/* Stat row */
.stat-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:760px){ .stat-row{ grid-template-columns:1fr 1fr; } }
.stat{ background:var(--bg-raised); border:1px solid var(--border); padding:34px 20px; text-align:center; }
.stat svg{ width:24px; height:24px; color:var(--amber); margin:0 auto 16px; }
.stat .num{ font-family:var(--display); font-weight:700; font-size:28px; margin-bottom:8px; }
.stat .label{ font-family:var(--mono); font-size:11.5px; letter-spacing:0.08em; text-transform:uppercase; color:var(--grey); }

/* Accordion (services page) */
.accordion-item{ border:1px solid var(--border); background:var(--bg-raised); margin-bottom:20px; transition:border-color .2s ease; }
.accordion-item:last-child{ margin-bottom:0; }
.accordion-head{
  width:100%;
  display:flex; align-items:flex-start; gap:22px;
  background:none; border:none; color:inherit;
  padding:28px 26px;
  cursor:pointer;
  text-align:left;
  font-family:inherit;
}
.accordion-head:hover{ background:var(--bg-raised); }
.accordion-head .icon-swatch{ margin-bottom:0; flex:none; }
.accordion-title{ flex:1; }
.accordion-title h3{ font-size:19px; margin-bottom:8px; }
.accordion-title p.brief{ color:var(--grey); font-size:14.5px; }
.accordion-meta{ display:flex; align-items:center; gap:14px; flex:none; padding-top:6px; }
.accordion-meta .code{ font-family:var(--mono); font-size:11px; color:var(--grey-dim); }
.accordion-meta .chev{ width:16px; height:16px; color:var(--amber); transition:transform .25s ease; }
.accordion-item.open .accordion-meta .chev{ transform:rotate(180deg); }
.accordion-body{
  max-height:0; overflow:hidden;
  transition:max-height .3s ease;
}
.accordion-item.open .accordion-body{ max-height:220px; }
.accordion-body-inner{ padding:0 26px 28px 100px; color:var(--grey); font-size:15px; }
@media (max-width:640px){ .accordion-body-inner{ padding-left:26px; } }

/* Two col about */
.two-col{ display:grid; grid-template-columns:0.95fr 1.05fr; gap:60px; align-items:center; }
@media (max-width:880px){ .two-col{ grid-template-columns:1fr; gap:38px; } }
.viaduct-art{
  border:1px solid var(--border);
  background:var(--bg-raised);
  padding:30px;
}
.prose p + p{ margin-top:16px; }
.prose p{ color:var(--grey); font-size:16px; }

/* Feature row */
.feature-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:860px){ .feature-row{ grid-template-columns:1fr; } }
.feature{ background:var(--bg-raised); border:1px solid var(--border); padding:32px 28px; }
.feature h3{ font-size:17px; margin-bottom:10px; }
.feature p{ color:var(--grey); font-size:15px; }

/* CTA band */
.cta-band{ background:var(--bg-raised); border-top:1px solid var(--border); border-bottom:1px solid var(--border); padding:60px 0; }
.cta-band .wrap{ text-align:center; }
.cta-band p{ color:var(--grey); font-size:16px; margin-bottom:26px; }
.cta-band .btns{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* =========================================================
   Contact page
   ========================================================= */
.contact-grid{ display:grid; grid-template-columns:0.85fr 1.15fr; gap:56px; }
@media (max-width:880px){ .contact-grid{ grid-template-columns:1fr; } }

.contact-row{ display:flex; gap:16px; align-items:flex-start; margin-bottom:26px; }
.contact-row .icon-swatch{ margin-bottom:0; }
.contact-row h4{ font-size:15px; margin-bottom:4px; }
.contact-row p, .contact-row a{ color:var(--grey); font-size:15px; }
.contact-row a:hover{ color:var(--amber); }

.emergency-box{
  border:1px solid rgba(255,107,94,0.35);
  background:rgba(255,107,94,0.06);
  padding:22px 24px;
  margin-top:8px;
  transition:box-shadow .3s ease, border-color .3s ease;
}
.emergency-box.active, .form-card.emergency{
  border-color:rgba(255,107,94,0.7);
  animation:emergencyGlow 1.8s ease-in-out infinite;
}
@keyframes emergencyGlow{
  0%,100%{ box-shadow:0 0 14px rgba(255,107,94,0.18), 0 0 0 1px rgba(255,107,94,0.25) inset; }
  50%{ box-shadow:0 0 34px rgba(255,107,94,0.4), 0 0 0 1px rgba(255,107,94,0.45) inset; }
}
.emergency-box h4{
  display:flex; align-items:center; gap:8px;
  color:var(--red); font-family:var(--display); font-size:15px; margin-bottom:10px;
}
.emergency-box h4 svg{ width:16px; height:16px; }
.emergency-box p{ color:var(--grey); font-size:14px; }

.form-card{ border:1px solid var(--border); background:var(--bg-raised); padding:32px; }
.emergency-toggle-row{
  display:flex; align-items:center; justify-content:space-between;
  padding-bottom:22px; margin-bottom:24px;
  border-bottom:1px solid var(--border);
}
.emergency-toggle-label{
  display:flex; align-items:center; gap:9px;
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.08em; text-transform:uppercase; color:var(--grey);
}
.emergency-toggle-label svg{ width:15px; height:15px; color:var(--grey); }
.emergency-toggle-row.active .emergency-toggle-label{ color:var(--red); }
.emergency-toggle-row.active .emergency-toggle-label svg{ color:var(--red); }

.switch{ position:relative; width:44px; height:24px; flex:none; }
.switch input{ position:absolute; opacity:0; width:100%; height:100%; margin:0; cursor:pointer; }
.switch .track{
  position:absolute; inset:0; background:#2A2F38; border:1px solid var(--border-strong);
  transition:background .2s ease, border-color .2s ease;
}
.switch .thumb{
  position:absolute; top:2px; left:2px; width:18px; height:18px; background:var(--white);
  transition:transform .2s ease, background .2s ease;
}
.switch input:checked + .track{ background:var(--red); border-color:var(--red); }
.switch input:checked + .track + .thumb{ transform:translateX(20px); }

.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
@media (max-width:560px){ .form-grid{ grid-template-columns:1fr; } }
.form-field{ margin-bottom:20px; }
.form-field.full{ grid-column:1 / -1; }
.form-field label{
  display:block; font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--grey); margin-bottom:9px;
}
.form-field input, .form-field textarea, .form-field select{
  width:100%; font-family:var(--body); font-size:15px;
  padding:13px 14px;
  background:var(--bg);
  border:1px solid var(--border-strong);
  color:var(--white);
}
.form-field select{ appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A93A6' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 14px center; background-size:16px; }
.form-field input::placeholder, .form-field textarea::placeholder{ color:var(--grey-dim); }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus{ border-color:var(--amber); }
.form-card.emergency .form-field input:focus, .form-card.emergency .form-field textarea:focus{ border-color:var(--red); }

.form-status{ font-family:var(--mono); font-size:13px; margin-top:16px; min-height:18px; color:var(--grey); }
.form-status.ok{ color:var(--amber); }
.form-note{ font-size:13px; color:var(--grey-dim); margin-top:12px; }

/* =========================================================
   Case Studies — terminal / HUD panel
   ========================================================= */
.hud-frame{ position:relative; }
.hud-frame .corner{ position:absolute; width:18px; height:18px; pointer-events:none; }
.hud-frame .corner.tl{ top:-1px; left:-1px; border-top:2px solid var(--amber); border-left:2px solid var(--amber); }
.hud-frame .corner.tr{ top:-1px; right:-1px; border-top:2px solid var(--amber); border-right:2px solid var(--amber); }
.hud-frame .corner.bl{ bottom:-1px; left:-1px; border-bottom:2px solid var(--amber); border-left:2px solid var(--amber); }
.hud-frame .corner.br{ bottom:-1px; right:-1px; border-bottom:2px solid var(--amber); border-right:2px solid var(--amber); }

.terminal-panel{
  position:relative;
  max-width:720px;
  margin:0 auto;
  background:var(--bg-raised);
  border:1px solid var(--border);
  overflow:hidden;
}
.terminal-panel::after{
  content:"";
  position:absolute; left:0; right:0; top:0; height:2px;
  background:linear-gradient(90deg, transparent, rgba(245,166,35,0.55), transparent);
  animation:scan 3.4s linear infinite;
}
@keyframes scan{ 0%{ top:60px; opacity:0; } 8%{ opacity:1; } 92%{ opacity:1; } 100%{ top:100%; opacity:0; } }

.terminal-topbar{
  display:flex; align-items:center; gap:8px;
  padding:14px 18px;
  border-bottom:1px solid var(--border);
  background:var(--bg-raised-2);
}
.terminal-dot{ width:9px; height:9px; border-radius:50%; background:var(--grey-dim); }
.terminal-dot.red{ background:var(--red); }
.terminal-dot.amber{ background:var(--amber); }
.terminal-title{ font-family:var(--mono); font-size:12px; color:var(--grey); margin-left:8px; letter-spacing:0.04em; }

.terminal-body{ padding:34px 32px 30px; font-family:var(--mono); font-size:14.5px; line-height:2.1; color:var(--grey); }
.terminal-body .prompt{ color:var(--grey-dim); margin-right:10px; }
.terminal-body .amber{ color:var(--amber); }
.cursor{
  display:inline-block; width:8px; height:15px; background:var(--amber);
  margin-left:8px; vertical-align:middle;
  animation:blink 1s steps(2, start) infinite;
}
.progress-label{
  font-family:var(--mono); font-size:11px; letter-spacing:0.1em; text-transform:uppercase; color:var(--grey-dim);
  margin-top:26px; margin-bottom:10px;
}
.progress-track{ height:6px; background:var(--bg); border:1px solid var(--border-strong); overflow:hidden; }
.progress-fill{
  height:100%; width:20%; background:var(--amber);
  animation:progressPulse 2.6s ease-in-out infinite alternate;
}
@keyframes progressPulse{ 0%{ width:12%; } 100%{ width:48%; } }
/* =========================================================
   Footer
   ========================================================= */
footer.site-footer{ background:var(--bg); border-top:1px solid var(--border); padding:56px 0 30px; }
.footer-grid{ display:grid; grid-template-columns:1.3fr 1fr 1fr 1fr; gap:36px; padding-bottom:36px; }
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-brand-text{ font-family:var(--display); font-weight:700; font-size:17px; margin-bottom:14px; }
.footer-blurb{ color:var(--grey); font-size:14.5px; max-width:280px; }
.footer-col{ text-align:center; }
.footer-col h5{
  font-family:var(--mono); font-size:15px; letter-spacing:0.1em; text-transform:uppercase; color:var(--amber); margin-bottom:16px; font-weight:600;
}
.footer-col li{ margin-bottom:11px; }
.footer-col a, .footer-col span{ font-size:14.5px; color:var(--grey); }
.footer-col a:hover{ color:var(--white); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  padding-top:24px; border-top:1px solid var(--border);
  font-family:var(--mono); font-size:12px; color:var(--grey-dim);
}