/* ===== CAMCO Engineering — light corporate ===== */
:root{
  --ink:#16201d;
  --ink-soft:#4a5854;
  --paper:#ffffff;
  --paper-alt:#f6f5f1;
  --line:#e4e2da;
  --accent:#125c47;       /* deep evergreen */
  --accent-soft:#e7f0ec;
  --accent-2:#b88a2e;     /* warm brass for small accents */
  --radius:14px;
  --maxw:1140px;
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* language visibility */
.lang-de .lang-en-only,.lang-en .lang-de-only{display:none}

h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.12;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:1.35rem;letter-spacing:.02em}
.brand-mark{display:block;height:38px;width:auto;mix-blend-mode:multiply}
.brand-text{font-weight:600}
.brand-sub{font-family:var(--sans);font-size:.62rem;letter-spacing:.32em;text-transform:uppercase;color:var(--ink-soft);display:block;margin-top:-3px}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:30px;font-size:.93rem;font-weight:500}
.site-nav a{color:var(--ink-soft);transition:color .2s}
.site-nav a:hover{color:var(--accent)}
.nav-cta{color:var(--accent)!important;font-weight:600}
.lang-toggle{
  border:1px solid var(--line);background:transparent;border-radius:999px;
  padding:7px 14px;font:600 .82rem/1 var(--sans);letter-spacing:.06em;color:var(--ink);
  cursor:pointer;transition:all .2s
}
.lang-toggle:hover{border-color:var(--accent);color:var(--accent)}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.menu-btn span{width:24px;height:2px;background:var(--ink);transition:.25s}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:14px 26px;font-weight:600;font-size:.95rem;transition:transform .15s ease,box-shadow .2s,background .2s;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 22px rgba(18,92,71,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(18,92,71,.3)}
.btn-ghost{border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ===== Hero ===== */
.hero{padding:84px 0 70px;background:radial-gradient(120% 120% at 90% 0%,var(--accent-soft) 0%,transparent 55%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.eyebrow{font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:18px}
.hero h1{font-size:clamp(2.3rem,4.6vw,3.6rem);margin-bottom:22px}
.lede{font-size:1.16rem;color:var(--ink-soft);max-width:33em;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{display:flex;justify-content:center}
.graph-svg{width:100%;max-width:440px;height:auto}
.graph-svg .edge{stroke:var(--accent);stroke-width:1.3;opacity:.28}
.graph-svg .node{fill:var(--accent)}
.graph-svg .node.alt{fill:var(--accent-2)}
.graph-svg .node.hub{fill:#fff;stroke:var(--accent);stroke-width:2.2}
.graph-svg .ring{fill:none;stroke:var(--accent);stroke-width:1;opacity:.16}

/* ===== Stats band ===== */
.stats-band{background:var(--ink);color:#eef2f0;padding:34px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-num{font-family:var(--serif);font-size:2.4rem;font-weight:600;color:#fff;line-height:1}
.stat-label{font-size:.86rem;color:#aeb9b4;letter-spacing:.02em}

/* ===== Sections ===== */
.section{padding:92px 0}
.section-alt{background:var(--paper-alt)}
.section-eyebrow{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:14px}
.section-title{font-size:clamp(1.7rem,3vw,2.5rem);max-width:18em;margin-bottom:22px}
.section-intro{font-size:1.1rem;color:var(--ink-soft);max-width:46em;margin-bottom:46px}

/* Pillars */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:56px}
.pillar{padding:28px 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);transition:transform .25s,box-shadow .25s}
.pillar:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(22,32,29,.07)}
.pillar-num{font-family:var(--serif);font-size:1.5rem;color:var(--accent-2)}
.pillar h3{font-size:1.18rem;margin:10px 0 8px}
.pillar p{font-size:.95rem;color:var(--ink-soft)}

/* DSA callout */
.dsa-callout{display:grid;grid-template-columns:1.4fr 1fr;gap:38px;align-items:center;background:var(--ink);color:#eef2f0;border-radius:20px;padding:44px}
.dsa-callout h3{color:#fff;font-size:1.5rem;margin-bottom:14px}
.dsa-callout p{color:#c3cfca}
.dsa-points{list-style:none;display:flex;flex-direction:column;gap:14px}
.dsa-points li{position:relative;padding-left:26px;font-size:.97rem}
.dsa-points li::before{content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:50%;background:var(--accent-2)}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{padding:32px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 38px rgba(22,32,29,.08)}
.card h3{font-size:1.3rem;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.card ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.card li{position:relative;padding-left:22px;color:var(--ink-soft);font-size:.96rem}
.card li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--accent)}

/* Feature card (public sector / SGO) */
.card-feature{grid-column:1/-1;margin-top:24px;background:var(--ink);color:#eef2f0;border-color:transparent}
.card-feature .card-feature-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:14px;margin-bottom:16px}
.card-feature h3{color:#fff;font-size:1.4rem}
.card-tag{font-family:var(--sans);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--accent-2);border:1px solid rgba(184,138,46,.5);border-radius:999px;padding:5px 12px}
.card-feature-lede{color:#c7d2cd;margin-bottom:18px;max-width:60em}
.card-feature-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 28px;margin-bottom:20px}
.card-feature-list li{position:relative;padding-left:22px;color:#c7d2cd;font-size:.95rem}
.card-feature-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--accent-2)}
.card-feature-link{color:var(--accent-2);font-weight:600;font-size:.96rem}
.card-feature-link:hover{color:#fff}

/* ===== SGO — Semantic Government Overlay ===== */
.sgo-section{background:linear-gradient(180deg,#fbfcfd 0%,#eef2f6 100%)}
.sgo-diagram{
  display:grid;grid-template-columns:150px 1fr 170px;gap:14px;align-items:stretch;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:0 20px 50px rgba(22,32,29,.07);margin-bottom:48px
}
.sgo-rail{display:flex;flex-direction:column;justify-content:center;gap:6px;text-align:center;
  border-radius:12px;padding:16px 12px;font-size:.82rem}
.sgo-rail-left{background:#d4eeec;border:1px solid #028090;color:#04535c}
.sgo-rail-right{background:#eef2f6;border:1px dashed #1e2761;color:#1e2761}
.sgo-rail-title{font-weight:700;font-size:.92rem;letter-spacing:.04em}
.sgo-rail-sub{color:inherit;opacity:.85;line-height:1.45}
.sgo-stack{display:flex;flex-direction:column;gap:10px}
.sgo-layer{display:flex;gap:14px;align-items:flex-start;border-radius:12px;padding:14px 16px;border:1px solid}
.sgo-num{flex:none;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:600;font-size:.92rem;background:rgba(255,255,255,.7);border:1px solid currentColor}
.sgo-layer-body{display:flex;flex-direction:column;gap:5px}
.sgo-layer-body strong{font-family:var(--serif);font-weight:600;font-size:1.04rem}
.sgo-layer-body span{font-size:.88rem;line-height:1.5}
.sgo-human{background:#e8e0f0;border-color:#5040a0;color:#2c2160}
.sgo-mac{background:#c8d9f0;border-color:#163180;color:#10245e}
.sgo-dsa{background:#eef2f6;border-color:#1e2761;color:#1e2761;flex-direction:column;gap:10px}
.sgo-fabric{background:#e8f4d9;border-color:#4a7c2a;color:#33561c}
.sgo-legacy{background:#f5f5f5;border:1px dashed #888;color:#555;align-items:center}
.sgo-lock{font-size:1.3rem;flex:none}
.sgo-chips{display:flex;flex-wrap:wrap;gap:8px}
.sgo-chip{font-size:.8rem;font-weight:500;border-radius:8px;padding:7px 11px;line-height:1.35;border:1px solid}
.sgo-chip-main{background:#1e2761;color:#fff;border-color:#1e2761}
.sgo-chip-ax1{background:#ffe9b5;color:#7a4f0e;border-color:#c7841c}
.sgo-chip-ax2{background:#ffd6a8;color:#7a3e0a;border-color:#a05a14}
.sgo-chip-kat{background:#f4f0cc;color:#5e4715;border-color:#806020}
/* gate + flow rows */
.sgo-gate{background:#b85042;color:#fff;border-radius:10px;padding:11px 16px;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.sgo-gate strong{font-family:var(--serif);font-size:1rem}
.sgo-gate-verdict{font-family:'IBM Plex Mono',monospace;font-size:.82rem;letter-spacing:.04em;background:rgba(255,255,255,.16);padding:2px 9px;border-radius:6px}
.sgo-gate-sub{font-size:.8rem;color:#ffe2dd;width:100%}
.sgo-flow{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;padding:2px 0}
.sgo-pill{font-size:.8rem;font-weight:600;border-radius:999px;padding:6px 14px;border:1px solid}
.sgo-pill-human{background:#fff;border-color:#5040a0;color:#5040a0}
.sgo-pill-read{background:#e8f4d9;border-color:#4a7c2a;color:#33561c}
.sgo-pill-block{background:#fce8e6;border-color:#b53a3a;color:#b53a3a;text-decoration:line-through;text-decoration-thickness:1.5px}
/* theses */
.sgo-theses{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:26px}
.sgo-thesis{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;border-top:3px solid var(--accent)}
.sgo-thesis-num{font-family:'IBM Plex Mono',monospace;font-size:.76rem;letter-spacing:.08em;color:var(--accent-2);font-weight:500}
.sgo-thesis h3{font-size:1.22rem;margin:8px 0 10px}
.sgo-thesis p{color:var(--ink-soft);font-size:.95rem}
.sgo-note{font-size:.86rem;color:var(--ink-soft);background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:14px 18px;line-height:1.6}

/* ===== Publications ===== */
.pub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pub{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .25s,box-shadow .25s}
.pub:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(22,32,29,.07)}
.pub-tag{display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);border-radius:6px;padding:3px 9px;margin-bottom:12px}
.pub h3{font-size:1.12rem;line-height:1.25;margin-bottom:10px}
.pub p{color:var(--ink-soft);font-size:.92rem}
.pub-foot{text-align:center;color:var(--ink-soft);font-size:.92rem;margin-top:34px}
.ref-note{font-size:.84rem;color:var(--ink-soft);margin-top:22px;font-style:italic}

/* Flagship */
.flagship{background:linear-gradient(180deg,var(--paper) 0%,var(--accent-soft) 100%)}
.flagship-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.anchor-list{list-style:none;display:flex;flex-direction:column;gap:18px;margin-top:8px}
.anchor-list li{display:flex;flex-direction:column;gap:3px;border-left:3px solid var(--accent);padding-left:16px}
.anchor-list strong{font-family:var(--serif);font-size:1.08rem;font-weight:600}
.anchor-list span{color:var(--ink-soft);font-size:.96rem}
.flagship-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:0 20px 50px rgba(22,32,29,.08)}
.spec-label{display:block;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:16px}
.spec-row{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid var(--line);font-size:.95rem}
.spec-row span:first-child{font-weight:600}
.spec-row span:last-child{color:var(--ink-soft);font-family:var(--sans)}
.flagship-quote{font-family:var(--serif);font-size:1.22rem;font-style:italic;margin:26px 0 16px;line-height:1.4}
.flagship-partners{font-size:.9rem;color:var(--ink-soft)}

/* References */
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ref{padding:28px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:transform .25s,box-shadow .25s}
.ref:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(22,32,29,.07)}
.ref h3{font-size:1.22rem;margin-bottom:8px}
.ref p{color:var(--ink-soft);font-size:.94rem}
.ref-os{background:var(--accent-soft);border-color:transparent}

/* Team */
.team-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.team-grid--single{grid-template-columns:minmax(0,560px);justify-content:center}
.member{padding:36px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.member-avatar{width:64px;height:64px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:1.4rem;font-weight:600;margin-bottom:18px}
.member h3{font-size:1.4rem}
.member-role{color:var(--accent);font-weight:600;font-size:.95rem;margin:4px 0 14px}
.member p{color:var(--ink-soft);margin-bottom:16px}
.member-mail{color:var(--accent);font-weight:500;font-size:.92rem;border-bottom:1px solid var(--accent-soft)}
.member-mail:hover{border-color:var(--accent)}

/* Contact */
.contact{text-align:center;background:var(--ink);color:#eef2f0}
.contact .section-eyebrow{color:var(--accent-2)}
.contact .section-title{color:#fff;margin-left:auto;margin-right:auto}
.contact .section-intro{color:#bccac4;margin-left:auto;margin-right:auto}
.contact-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.contact .btn-ghost{border-color:rgba(255,255,255,.28);color:#fff}
.contact .btn-ghost:hover{border-color:#fff}

/* Footer */
.site-footer{background:#0e1614;color:#90a099;padding:26px 0;font-size:.86rem}
.footer-inner{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
.footer-inner a:hover{color:#fff}

/* Reveal animation — progressive enhancement: only hides when JS is active */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media(max-width:900px){
  .hero-grid,.dsa-callout,.flagship-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .pillars,.cards,.ref-grid,.team-grid,.pub-grid,.sgo-theses{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px}
  .card-feature-list{grid-template-columns:1fr}
  .sgo-diagram{grid-template-columns:1fr}
  .sgo-rail{flex-direction:row;justify-content:flex-start;text-align:left;flex-wrap:wrap}
  .menu-btn{display:flex}
  .site-nav{
    position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:flex-start;gap:0;padding:8px 28px;
    max-height:0;overflow:hidden;transition:max-height .3s ease;margin-left:0
  }
  .site-nav a{padding:13px 0;width:100%;border-bottom:1px solid var(--line)}
  .site-nav.open{max-height:360px}
  .header-inner{position:relative}
}
@media(max-width:560px){
  .pillars,.cards,.ref-grid,.team-grid,.pub-grid,.sgo-theses{grid-template-columns:1fr}
  .section{padding:64px 0}
  .dsa-callout,.flagship-card,.member{padding:26px}
  .sgo-diagram{padding:16px}
}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}