/* Enddrave Tech — site design system
   Big Shoulders Display (display) + IBM Plex Sans (body) + IBM Plex Mono (data/labels)
   Tokens follow light/dark cascade: bare :root -> prefers-color-scheme -> [data-theme] */

:root{
  --ink:#12241C;
  --paper:#F1F4EE;
  --paper-raised:#E5EBE1;
  --paper-raised-2:#DAE3D5;
  --brand-green:#1B5E45;
  --brand-teal:#2E9678;
  --brand-amber:#C8862A;
  --line:rgba(18,36,28,0.16);
  --text-soft:#4B5C53;
  --text-faint:#6E7D74;
  --shadow: 0 1px 2px rgba(18,36,28,0.06);
  --focus: #1B5E45;
  --danger:#B3402E;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ink:#EAF1EC; --paper:#0C1712; --paper-raised:#132018; --paper-raised-2:#1B2A21;
    --brand-green:#7BD9B3; --brand-teal:#57C6A4; --brand-amber:#F0BE63;
    --line:rgba(234,241,236,0.14); --text-soft:#A9BEB2; --text-faint:#87998D;
    --shadow: 0 1px 2px rgba(0,0,0,0.3); --focus:#7BD9B3; --danger:#E08267;
  }
}
:root[data-theme="dark"]{
  --ink:#EAF1EC; --paper:#0C1712; --paper-raised:#132018; --paper-raised-2:#1B2A21;
  --brand-green:#7BD9B3; --brand-teal:#57C6A4; --brand-amber:#F0BE63;
  --line:rgba(234,241,236,0.14); --text-soft:#A9BEB2; --text-faint:#87998D;
  --shadow: 0 1px 2px rgba(0,0,0,0.3); --focus:#7BD9B3; --danger:#E08267;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size:16px; line-height:1.6;
}
.container{max-width:1440px; margin-inline:auto; padding-inline:24px;}
.container.container-narrow{max-width:1220px;}
h1,h2,h3{
  font-family:'Big Shoulders Display', 'Arial Narrow', sans-serif; font-weight:800;
  text-transform:uppercase; letter-spacing:0.01em; line-height:0.96; margin:0;
  text-wrap:balance; color:var(--ink);
}
.mono{font-family:'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;}
.eyebrow{
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; letter-spacing:0.14em;
  text-transform:uppercase; color:var(--brand-teal); font-weight:500; display:block;
}
a{color:var(--brand-green);}
a:focus-visible, button:focus-visible, [tabindex]:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--focus); outline-offset:3px; border-radius:2px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:40;
  background:color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter:blur(6px); border-bottom:1px solid var(--line);
}
.nav{display:flex; align-items:center; justify-content:space-between; padding-block:14px; gap:16px;}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none;}
.brand svg, .brand .brand-mark{flex:none;}
.brand .brand-mark{height:34px; width:auto; display:block;}
.brand .word{
  font-family:'Big Shoulders Display', sans-serif; font-weight:800; font-size:20px;
  letter-spacing:0.01em; color:var(--ink); text-transform:uppercase; line-height:1;
}
.brand .word small{
  display:block; font-family:'IBM Plex Mono', monospace; font-size:9px; letter-spacing:0.08em;
  color:var(--text-faint); text-transform:uppercase; font-weight:500; margin-top:2px;
}
nav.links{display:flex; align-items:center; gap:24px;}
nav.links a{color:var(--text-soft); text-decoration:none; font-size:14.5px; font-weight:500;}
nav.links a:hover, nav.links a[aria-current="page"]{color:var(--brand-green);}
.btn{
  display:inline-flex; align-items:center; gap:8px; background:var(--brand-green); color:var(--paper);
  padding:10px 18px; border-radius:3px; text-decoration:none; font-size:14px; font-weight:600;
  white-space:nowrap; border:1px solid var(--brand-green); cursor:pointer; font-family:inherit;
}
.btn:hover{background:var(--brand-teal); border-color:var(--brand-teal);}
.btn.ghost{background:transparent; color:var(--ink); border:1px solid var(--line);}
.btn.ghost:hover{border-color:var(--brand-green); color:var(--brand-green);}
/* .btn must win over the more specific "nav.links a" color rule above */
nav.links a.btn, nav.links a.btn:hover{color:var(--paper);}
nav.links a.btn.ghost, nav.links a.btn.ghost:hover{color:var(--ink);}
.menu-toggle{display:none; background:none; border:1px solid var(--line); border-radius:3px; padding:8px 10px; color:var(--ink);}

/* ---------- nav dropdown (Dashboard) ---------- */
.nav-dropdown{position:relative;}
.nav-dropdown .dropdown-trigger::after{content:"▾"; font-size:9px; margin-left:5px; opacity:0.65; position:relative; top:-1px;}
.nav-dropdown .dropdown-menu{
  display:none; flex-direction:column; gap:2px;
  position:absolute; top:100%; left:0; margin-top:12px; padding:6px;
  background:var(--paper); border:1px solid var(--line); border-radius:6px;
  min-width:190px; box-shadow:0 8px 24px rgba(0,0,0,0.1); z-index:40;
}
.nav-dropdown:hover .dropdown-menu, .nav-dropdown:focus-within .dropdown-menu{display:flex;}
.dropdown-menu a{padding:8px 10px; border-radius:4px; font-size:13.5px; white-space:nowrap;}
.dropdown-menu a:hover{background:var(--paper-raised);}

/* ---------- section scaffolding ---------- */
.trace{
  height:1px; background:linear-gradient(90deg, var(--line) 0 6px, transparent 6px 10px) repeat-x;
  background-size:16px 1px; border:0; margin:0; opacity:0.9;
}
.section-label{display:flex; align-items:center; gap:14px; padding-block:26px 8px;}
.section-label .tag{font-family:'IBM Plex Mono', monospace; font-size:12.5px; letter-spacing:0.1em; color:var(--text-faint); white-space:nowrap;}
.section-label .tag b{color:var(--brand-green); font-weight:600;}
.section-label .rule{flex:1; height:1px; background:var(--line);}

/* ---------- page hero (sub-hero) ---------- */
.sub-hero{padding-block:52px 34px;}
.sub-hero .eyebrow{margin-bottom:12px;}
.sub-hero h1{font-size:clamp(34px,5vw,58px);}
.sub-hero p.lede{max-width:56ch; margin:16px 0 0; color:var(--text-soft); font-size:16.5px;}

/* ---------- cards / grids ---------- */
.card{background:var(--paper-raised); border:1px solid var(--line); border-radius:6px; padding:24px 26px;}
.two-col{display:grid; grid-template-columns:1.4fr 1fr; gap:24px; padding-block:8px 40px;}
.cards-3{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:4px; overflow:hidden; margin-block:8px 40px;}
.cards-3 .card{border:0; border-radius:0; background:var(--paper);}
.card.big h3{font-size:19px; text-transform:none; letter-spacing:0; margin-bottom:10px;}
.card.big ul{margin:0; padding-left:18px; color:var(--text-soft); font-size:14.5px; display:flex; flex-direction:column; gap:6px;}
.card.big p.muted{margin-top:14px; font-size:12.5px; color:var(--text-faint); font-family:'IBM Plex Mono', monospace;}
.two-col h2{font-size:26px; text-transform:none; letter-spacing:0; margin-bottom:10px;}
.two-col h3{font-size:16px; text-transform:none; letter-spacing:0; margin-top:18px; margin-bottom:6px; color:var(--brand-green);}
.two-col p{color:var(--text-soft); font-size:15px; margin:0;}
.cards-4{grid-template-columns:repeat(4,1fr);}
.tech-points{margin:0; padding-left:18px; color:var(--text-soft); font-size:14.5px; display:flex; flex-direction:column; gap:8px;}
.tech-points strong{color:var(--ink);}
.step-num{font-size:13px; letter-spacing:0.08em; color:var(--brand-green); font-weight:600; margin:0 0 8px;}
.card.big p.step-desc{color:var(--text-soft); font-size:14px; line-height:1.55; margin-top:0;}

/* ---------- closing CTA band ---------- */
.cta-band{background:var(--brand-green); margin-top:40px;}
.cta-band-inner{display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; padding-block:32px;}
.cta-band h2{color:var(--paper); font-size:clamp(22px,3vw,30px); text-transform:none; letter-spacing:0; max-width:32ch;}
.cta-band .btn{background:var(--paper); color:var(--brand-green); border-color:var(--paper); flex:none;}
.cta-band .btn:hover{background:var(--paper-raised); border-color:var(--paper-raised);}

/* ---------- FAQ ---------- */
.faq-list{display:flex; flex-direction:column; margin-block:8px 44px; max-width:760px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex; align-items:center; justify-content:space-between; gap:16px; list-style:none;
  padding-block:18px; font-size:15.5px; font-weight:500; color:var(--ink); cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+"; flex:none; font-family:'IBM Plex Mono', monospace; font-size:18px;
  color:var(--brand-green); transition:transform .15s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{color:var(--text-soft); font-size:14.5px; line-height:1.65; max-width:64ch; margin:0 0 20px;}

/* ---------- legal pages ---------- */
main.legal{padding-block:44px 60px; max-width:760px;}
main.legal h1{font-size:clamp(30px,4vw,46px); margin-bottom:20px;}
main.legal h2{font-size:19px; text-transform:none; letter-spacing:0; color:var(--brand-green); margin:28px 0 10px;}
main.legal p, main.legal li{color:var(--text-soft); font-size:15.5px; line-height:1.7;}
main.legal ul{padding-left:20px; display:flex; flex-direction:column; gap:8px;}
main.legal .doc-link{
  display:inline-flex; align-items:center; gap:8px; margin-top:18px; padding:10px 16px;
  border:1px solid var(--line); border-radius:4px; background:var(--paper-raised); text-decoration:none;
  font-size:14px; font-weight:500; color:var(--ink);
}
main.legal .doc-link:hover{border-color:var(--brand-green);}

/* ---------- contact ---------- */
.contact-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:28px; padding-block:8px 60px;}
.form label{display:flex; flex-direction:column; gap:6px; font-size:13.5px; font-weight:500; color:var(--text-soft); margin-bottom:16px;}
.form input, .form select, .form textarea{
  font-family:inherit; font-size:15px; padding:10px 12px; border:1px solid var(--line); border-radius:4px;
  background:var(--paper); color:var(--ink);
}
.form-actions{display:flex; align-items:center; gap:14px; flex-wrap:wrap; margin-top:6px;}
.form-actions small.muted{color:var(--text-faint); font-size:12.5px;}
.status-area{margin-top:12px; font-size:13.5px; font-family:'IBM Plex Mono', monospace;}
.status-area.error{color:var(--danger);}
.status-area.ok{color:var(--brand-green);}
.map{padding:0; overflow:hidden; display:flex; flex-direction:column;}
.map iframe{width:100%; height:280px; display:block;}
.map-note{padding:12px 16px; font-size:12px; color:var(--text-faint); font-family:'IBM Plex Mono', monospace;}

/* ---------- dashboard ---------- */
.grid-3{display:grid; grid-template-columns:1.2fr 0.9fr 0.9fr; gap:1px; background:var(--line); border:1px solid var(--line); border-radius:4px; overflow:hidden; margin-block:8px 1px;}
.panel{background:var(--paper); padding:22px 22px 24px;}
.panel h3{font-size:14px; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-faint); font-family:'IBM Plex Mono', monospace; font-weight:500; margin-bottom:14px;}
.panel h4{font-size:12.5px; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-faint); font-family:'IBM Plex Mono', monospace; font-weight:500; margin:16px 0 6px;}
.status{list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; font-size:14.5px; color:var(--text-soft);}
.status strong{color:var(--ink); font-weight:600;}
.dot{width:8px; height:8px; border-radius:50%; display:inline-block; margin-right:4px;}
.dot.green{background:var(--brand-teal); box-shadow:0 0 0 3px color-mix(in srgb, var(--brand-teal) 25%, transparent);}
.dot.amber{background:var(--brand-amber); box-shadow:0 0 0 3px color-mix(in srgb, var(--brand-amber) 25%, transparent);}
.dot.grey{background:var(--text-faint);}
.panel .log{margin-top:12px; font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--text-faint); white-space:pre-wrap; max-height:90px; overflow-y:auto;}
.panel .btn{margin:0 8px 8px 0;}
.event-log{list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:6px; font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--text-soft); max-height:180px; overflow-y:auto;}
.demo-banner{
  background:color-mix(in srgb, var(--brand-amber) 14%, var(--paper)); border:1px solid var(--brand-amber);
  border-radius:4px; padding:10px 16px; font-size:13px; color:var(--text-soft); margin-bottom:18px;
  font-family:'IBM Plex Mono', monospace;
}

/* ---------- cold-storage dashboard ---------- */
.grid-cs{grid-template-columns:0.85fr 1.5fr 0.85fr;}
.env-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin:14px 0;}
.env-mini{background:var(--paper-raised); border:1px solid var(--line); border-radius:4px; padding:10px 12px;}
.env-mini-title{font-size:11px; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-faint); font-family:'IBM Plex Mono', monospace; margin:0 0 6px;}
.env-mini-chart{position:relative; height:64px;}
.env-mini-wide{grid-column:1 / -1;}
.cs-table{width:100%; border-collapse:collapse; font-size:12.5px; margin:10px 0 4px;}
.cs-table th, .cs-table td{padding:6px 8px; text-align:left; border-bottom:1px solid var(--line); color:var(--text-soft);}
.cs-table th{font-family:'IBM Plex Mono', monospace; font-size:10.5px; text-transform:uppercase; letter-spacing:0.05em; color:var(--text-faint); font-weight:500;}
.cs-table td:first-child{color:var(--ink); font-weight:500;}
.muted{color:var(--text-faint);}

/* ---------- footer ---------- */
.site-footer{padding-block:30px 40px; margin-top:40px; border-top:1px solid var(--line);}
.footer-grid{display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; font-size:13px; color:var(--text-faint);}
.footer-grid strong{color:var(--text-soft); font-weight:600;}
.footer-grid a{color:var(--text-faint); text-decoration:none;}
.footer-grid a:hover{color:var(--brand-green);}

/* ---------- floating buttons ---------- */
.back-btn, #scrollTopBtn{
  position:fixed; bottom:20px; z-index:30; border:1px solid var(--line); background:var(--paper-raised);
  color:var(--ink); border-radius:50%; width:42px; height:42px; cursor:pointer; font-size:15px;
}
.back-btn{left:20px;}
#scrollTopBtn{right:20px;}
.back-btn:hover, #scrollTopBtn:hover{border-color:var(--brand-green); color:var(--brand-green);}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .two-col, .contact-grid{grid-template-columns:1fr;}
  .cards-3{grid-template-columns:1fr;}
  .cards-4{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .env-grid{grid-template-columns:1fr;}
  .cta-band-inner{flex-direction:column; align-items:flex-start; text-align:left;}
  nav.links{display:none;}
  .menu-toggle{display:inline-flex;}
  nav.links.open{
    display:flex; position:absolute; top:100%; left:0; right:0; flex-direction:column;
    background:var(--paper); border-bottom:1px solid var(--line); padding:16px 20px; gap:16px;
  }
  .nav-dropdown{width:100%;}
  .nav-dropdown .dropdown-menu{
    display:flex; position:static; border:0; box-shadow:none; background:transparent;
    padding:8px 0 0 14px; margin-top:8px; min-width:0; gap:10px;
  }
  .dropdown-menu a{padding:0; font-size:13.5px; color:var(--text-faint);}
}