/* ===== Declovia — control-room design system ===== */

:root{
  --bg:            #0A0E13;
  --bg-elevated:   #10161D;
  --bg-panel:      #131B24;
  --bg-panel-hi:   #17212B;
  --grid-line:     rgba(90,140,200,0.10);
  --hairline:      rgba(232,236,240,0.10);
  --hairline-hi:   rgba(232,236,240,0.18);

  --ink:           #E8ECF0;
  --ink-dim:       #8B98A6;
  --ink-faint:     #5B6B7A;

  --blueprint:     #3E7BFA;
  --blueprint-dim: #2A56B8;
  --signal:        #14D8C4;
  --amber:         #F5A623;

  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --container: 1220px;
  --radius: 10px;
}

*, *::before, *::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1.0625rem;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:56px 56px;
  background-position:center top;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
.container{ max-width:var(--container); margin:0 auto; padding:0 28px; }

::selection{ background:var(--blueprint); color:#fff; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
  border-radius:4px;
}

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:500; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }

.eyebrow{
  font-family:var(--font-mono);
  font-size:0.75rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--signal);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  width:6px; height:6px;
  border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 8px var(--signal);
  flex:none;
}

/* ===== Header ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(10,14,19,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.logo{
  font-family:var(--font-display);
  font-size:1.25rem;
  font-weight:600;
  display:flex; align-items:center; gap:10px;
  letter-spacing:-0.01em;
}
.logo-mark{
  width:26px; height:26px;
  flex:none;
}
.logo-former{
  font-family:var(--font-mono);
  font-size:0.6875rem;
  color:var(--ink-faint);
  font-weight:400;
  letter-spacing:0.04em;
  margin-left:4px;
}
.nav-links{
  display:flex; gap:36px;
  font-size:0.9375rem;
  color:var(--ink-dim);
}
.nav-links a{ transition:color .15s ease; position:relative; }
.nav-links a:hover{ color:var(--ink); }
.header-actions{ display:flex; align-items:center; gap:20px; }

/* ===== Language switcher ===== */
.lang-switch{ position:relative; }
.lang-switch-btn{
  display:flex; align-items:center; gap:6px;
  background:transparent;
  border:1px solid var(--hairline-hi);
  color:var(--ink-dim);
  font-family:var(--font-mono);
  font-size:0.8125rem;
  letter-spacing:0.04em;
  padding:9px 12px;
  border-radius:7px;
  cursor:pointer;
  transition:border-color .15s ease, color .15s ease;
}
.lang-switch-btn:hover{ border-color:var(--signal); color:var(--ink); }
.lang-switch-btn svg{ width:12px; height:12px; transition:transform .15s ease; }
.lang-switch.is-open .lang-switch-btn svg{ transform:rotate(180deg); }
.lang-switch-menu{
  position:absolute; top:calc(100% + 8px); right:0;
  min-width:220px;
  background:var(--bg-panel);
  border:1px solid var(--hairline-hi);
  border-radius:9px;
  padding:6px;
  box-shadow:0 12px 32px -8px rgba(0,0,0,0.5);
  opacity:0; visibility:hidden; transform:translateY(-4px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
  z-index:60;
}
.lang-switch.is-open .lang-switch-menu{ opacity:1; visibility:visible; transform:none; }
.lang-switch-menu a{
  display:block;
  padding:10px 12px;
  border-radius:6px;
  font-size:0.9rem;
  color:var(--ink-dim);
}
.lang-switch-menu a:hover{ background:var(--bg-panel-hi); color:var(--ink); }
.lang-switch-menu a.is-current{ color:var(--signal); }
.lang-switch-inline{
  display:flex; gap:10px; flex-wrap:wrap;
  font-family:var(--font-mono); font-size:0.8125rem;
  padding:16px 8px 4px;
}
.lang-switch-inline a{ color:var(--ink-dim); }
.lang-switch-inline a.is-current{ color:var(--signal); }
.footer-lang{
  display:flex; gap:16px;
  font-family:var(--font-mono); font-size:0.8125rem;
  color:var(--ink-faint);
}
.footer-lang a{ color:var(--ink-faint); transition:color .15s ease; }
.footer-lang a:hover, .footer-lang a.is-current{ color:var(--ink-dim); }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:40px;
  height:40px;
  padding:0;
  background:transparent;
  border:1px solid var(--hairline-hi);
  border-radius:8px;
  cursor:pointer;
  flex:none;
}
.nav-toggle span{
  display:block;
  width:16px;
  height:1.5px;
  margin:0 auto;
  background:var(--ink);
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

.mobile-nav{
  display:none;
  flex-direction:column;
  gap:2px;
  padding:8px 20px 24px;
  border-top:1px solid var(--hairline);
  background:var(--bg-elevated);
}
.mobile-nav a{
  padding:14px 8px;
  font-size:1rem;
  color:var(--ink-dim);
  border-bottom:1px solid var(--hairline);
}
.mobile-nav a:hover{ color:var(--ink); }
.mobile-nav-actions{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:18px;
}
.site-header.nav-open .mobile-nav{ display:flex; }

.mobile-nav .lang-switch-label{
  font-family:var(--font-mono);
  font-size:0.6875rem;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  padding:16px 8px 0;
}
.mobile-nav .lang-switch-inline{
  padding:10px 0 6px;
  border-bottom:1px solid var(--hairline);
}
.mobile-nav .lang-switch-inline a{
  padding:9px 12px;
  border:1px solid var(--hairline-hi);
  border-radius:7px;
  font-size:0.875rem;
  min-height:44px;
  display:flex;
  align-items:center;
}
.mobile-nav .lang-switch-inline a.is-current{
  border-color:var(--signal);
  color:var(--signal);
}

/* ===== Buttons ===== */
.btn{
  font-family:var(--font-body);
  font-weight:600;
  font-size:0.9375rem;
  padding:13px 26px;
  border-radius:8px;
  border:1px solid transparent;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:transform .15s ease, border-color .15s ease, background .15s ease;
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{
  background:linear-gradient(180deg, #4A87FF, var(--blueprint));
  color:#fff;
  box-shadow:0 1px 0 rgba(255,255,255,0.25) inset, 0 8px 24px -8px rgba(62,123,250,0.65);
}
.btn-primary:hover{ background:linear-gradient(180deg, #5990FF, #3E7BFA); }
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--hairline-hi);
}
.btn-ghost:hover{ border-color:var(--signal); color:var(--signal); }
.btn-block{ width:100%; justify-content:center; }
.btn-sm{ padding:10px 18px; font-size:0.875rem; }

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:96px 0 60px;
  overflow:hidden;
}
.hero .container{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.5rem, 4.6vw, 3.9rem);
  line-height:1.05;
  margin:22px 0 24px;
}
.hero h1 em{
  font-style:normal;
  color:var(--signal);
}
.hero-sub{
  font-size:1.125rem;
  color:var(--ink-dim);
  max-width:46ch;
  margin-bottom:36px;
}
.hero-ctas{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:40px; }
.hero-note{
  font-family:var(--font-mono);
  font-size:0.75rem;
  color:var(--ink-faint);
  letter-spacing:0.02em;
}

.hero-diagram{
  position:relative;
  aspect-ratio:1/1;
  max-width:520px;
  margin:0 auto;
}
.hero-diagram svg{ width:100%; height:100%; overflow:visible; }
.node-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
  fill:var(--ink-dim);
  text-transform:uppercase;
}
.node-core-label{ fill:var(--ink); font-size:12px; font-weight:600; }
.trace{
  fill:none;
  stroke:var(--blueprint-dim);
  stroke-width:1.5;
}
.trace-pulse{
  fill:none;
  stroke:var(--signal);
  stroke-width:2;
  stroke-linecap:round;
  stroke-dasharray:6 300;
  animation:pulse-travel 3.6s linear infinite;
  filter:drop-shadow(0 0 4px var(--signal));
}
.trace-pulse.d2{ animation-delay:1.2s; }
.trace-pulse.d3{ animation-delay:2.4s; }
@keyframes pulse-travel{
  0%{ stroke-dashoffset:0; opacity:0; }
  4%{ opacity:1; }
  92%{ opacity:1; }
  100%{ stroke-dashoffset:-300; opacity:0; }
}
.node-dot{ fill:var(--bg-panel); stroke:var(--hairline-hi); stroke-width:1.5; }
.node-core{ fill:var(--bg-panel-hi); stroke:var(--signal); stroke-width:1.5; }
@media (prefers-reduced-motion: reduce){
  .trace-pulse{ animation:none; opacity:.7; stroke-dasharray:none; }
}

/* ===== Status ticker ===== */
.ticker{
  border-top:1px solid var(--hairline);
  border-bottom:1px solid var(--hairline);
  background:var(--bg-elevated);
}
.ticker .container{
  display:flex; flex-wrap:wrap; gap:32px;
  padding:16px 28px;
  font-family:var(--font-mono);
  font-size:0.75rem;
  color:var(--ink-dim);
  letter-spacing:0.03em;
}
.ticker span{ display:inline-flex; align-items:center; gap:8px; }
.ticker span::before{
  content:'';
  width:6px; height:6px; border-radius:50%;
  background:var(--signal);
}
.ticker span:nth-child(2)::before{ background:var(--blueprint); }
.ticker span:nth-child(3)::before{ background:var(--amber); }

/* ===== Sections ===== */
section{ padding:120px 0; }
.section-head{
  max-width:640px;
  margin-bottom:64px;
}
.section-head h2{
  font-size:clamp(1.9rem, 3.2vw, 2.6rem);
  margin-top:16px;
  line-height:1.15;
}
.section-head p{
  margin-top:18px;
  color:var(--ink-dim);
  font-size:1.0625rem;
}
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* ===== Industries ===== */
.industries-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--hairline);
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  overflow:hidden;
}
.industry-card{
  background:var(--bg-elevated);
  padding:40px 32px;
  transition:background .2s ease;
}
.industry-card:hover{ background:var(--bg-panel); }
.industry-card-top{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:28px;
}
.industry-tag{
  font-family:var(--font-mono);
  font-size:0.75rem;
  letter-spacing:0.1em;
  padding:5px 10px;
  border-radius:5px;
  border:1px solid var(--hairline-hi);
  color:var(--ink-dim);
}
.industry-icon{ width:30px; height:30px; color:var(--signal); }
.industry-card h3{ font-size:1.3rem; margin-bottom:14px; }
.industry-card p{ color:var(--ink-dim); font-size:0.9375rem; }
.industry-card ul{
  list-style:none; padding:0; margin:22px 0 0;
  display:flex; flex-direction:column; gap:10px;
}
.industry-card li{
  font-size:0.875rem; color:var(--ink-dim);
  display:flex; gap:10px; align-items:flex-start;
}
.industry-card li::before{
  content:'';
  width:5px; height:5px;
  margin-top:8px;
  border-radius:50%;
  background:var(--blueprint);
  flex:none;
}

/* ===== Platform stack ===== */
.platform{ background:var(--bg-elevated); border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); }
.stack{
  display:flex; flex-direction:column; gap:1px;
  background:var(--hairline);
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  overflow:hidden;
}
.stack-layer{
  background:var(--bg-panel);
  padding:26px 32px;
  display:grid;
  grid-template-columns:200px 1fr;
  gap:24px;
  align-items:center;
}
.stack-layer:hover{ background:var(--bg-panel-hi); }
.stack-layer-name{
  font-family:var(--font-mono);
  font-size:0.8125rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--signal);
}
.stack-layer p{ color:var(--ink-dim); font-size:0.9375rem; }
.stack-layer strong{ color:var(--ink); font-weight:600; }

/* ===== Stats ===== */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:40px;
}
.stat{ border-left:1px solid var(--hairline-hi); padding-left:22px; }
.stat-num{
  font-family:var(--font-display);
  font-size:2.6rem;
  color:var(--ink);
  display:block;
}
.stat-label{ color:var(--ink-dim); font-size:0.875rem; margin-top:8px; display:block; }

/* ===== Demo CTA ===== */
.demo{
  background:var(--bg-elevated);
  border-top:1px solid var(--hairline);
}
.demo-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:start;
}
.demo-copy h2{ font-size:clamp(1.9rem, 3.2vw, 2.6rem); margin-top:16px; line-height:1.15; }
.demo-copy p{ color:var(--ink-dim); margin-top:18px; max-width:44ch; }
.demo-list{ list-style:none; padding:0; margin:32px 0 0; display:flex; flex-direction:column; gap:16px; }
.demo-list li{ display:flex; gap:12px; font-size:0.9375rem; color:var(--ink-dim); }
.demo-list li strong{ color:var(--ink); }
.check{ color:var(--signal); flex:none; }

.demo-form{
  background:var(--bg-panel);
  border:1px solid var(--hairline);
  border-radius:var(--radius);
  padding:36px;
}
.form-row{ margin-bottom:20px; }
.form-row label{
  display:block;
  font-size:0.8125rem;
  color:var(--ink-dim);
  margin-bottom:8px;
  font-family:var(--font-mono);
  letter-spacing:0.03em;
}
.form-row input, .form-row select, .form-row textarea{
  width:100%;
  background:var(--bg-elevated);
  border:1px solid var(--hairline-hi);
  border-radius:7px;
  padding:12px 14px;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:0.9375rem;
}
.form-row input::placeholder, .form-row textarea::placeholder{ color:var(--ink-faint); }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  border-color:var(--signal);
}
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-fineprint{ font-size:0.75rem; color:var(--ink-faint); margin-top:16px; text-align:center; }
.form-success{
  display:none;
  text-align:center;
  padding:20px 0;
}
.form-success.is-visible{ display:block; }
.form-success .check-big{ color:var(--signal); margin-bottom:14px; }
.demo-form.is-submitted form{ display:none; }

/* ===== Footer ===== */
footer{ padding:64px 0 40px; border-top:1px solid var(--hairline); }
.footer-top{
  display:flex; justify-content:space-between; align-items:flex-start;
  flex-wrap:wrap; gap:40px;
  margin-bottom:48px;
}
.footer-brand p{ color:var(--ink-dim); font-size:0.9375rem; max-width:34ch; margin-top:14px; }
.footer-links{ display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h4{ font-size:0.8125rem; font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.08em; color:var(--ink-faint); margin-bottom:16px; }
.footer-col a{ display:block; color:var(--ink-dim); font-size:0.9375rem; margin-bottom:12px; transition:color .15s ease; }
.footer-col a:hover{ color:var(--ink); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:24px; border-top:1px solid var(--hairline);
  font-size:0.8125rem; color:var(--ink-faint);
  flex-wrap:wrap; gap:12px;
}

/* ===== Responsive ===== */
@media (max-width: 980px){
  .hero .container{ grid-template-columns:1fr; }
  .hero-diagram{ order:-1; max-width:320px; }
  .industries-grid{ grid-template-columns:1fr; }
  .stack-layer{ grid-template-columns:1fr; gap:8px; }
  .stats-grid{ grid-template-columns:repeat(2,1fr); row-gap:32px; }
  .demo-grid{ grid-template-columns:1fr; }
}

@media (max-width: 860px){
  .nav-links, .header-actions{ display:none; }
  .nav-toggle{ display:flex; }
  section{ padding:88px 0; }
  .section-head{ margin-bottom:44px; }
  .footer-top{ gap:32px; }
  .footer-links{ gap:36px 48px; }
  .demo-form{ padding:26px; }
  .industry-card{ padding:32px 26px; }
}

@media (max-width: 560px){
  .container{ padding:0 20px; }
  section{ padding:64px 0; }
  .two-col{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:1fr; }
  .hero{ padding:48px 0 32px; }
  .hero-diagram{ max-width:260px; }
  .hero-ctas{ flex-direction:column; align-items:stretch; }
  .hero-ctas .btn{ width:100%; }
  .logo-former{ display:none; }
  .site-header .container{ height:64px; }
  .stack-layer{ padding:22px 20px; }
  .industry-card{ padding:28px 22px; }
  .demo-form{ padding:22px; }
  .footer-top{ flex-direction:column; }
  .footer-links{ gap:32px 40px; width:100%; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; gap:8px; }
}