/* ==========================================================================
   ElecBot marketing site — shared stylesheet (all pages)
   Theme matched to the ElecBot app: deep navy + electric blue, techy mono
   ========================================================================== */
:root{
  --navy-deep:#081120;
  --navy-panel:#0E1D33;
  --navy-line:#1B3454;
  --blue:#2FA4FF;
  --blue-btn:#1668B8;
  --blue-soft:#7CC4FF;
  --text:#E8F1FA;
  --muted:#8FA6BE;
  --ok:#22C55E;
  --warn:#F5A623;
  --alert:#EF4444;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--navy-deep);color:var(--text);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Chakra Petch',sans-serif;line-height:1.15;letter-spacing:.01em}
.mono{font-family:'IBM Plex Mono',monospace}
a{color:var(--blue)}
img{max-width:100%;display:block}
.wrap{max-width:1100px;margin:0 auto;padding:0 22px}
section{padding:84px 0}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:.78rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--blue);margin-bottom:14px}
.section-title{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:600;margin-bottom:14px}
.section-sub{color:var(--muted);max-width:620px;margin-bottom:42px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-block;background:var(--blue-btn);color:#FFFFFF;font-weight:600;
  padding:12px 24px;border-radius:10px;text-decoration:none;border:none;font-size:.98rem;
  cursor:pointer;font-family:'IBM Plex Sans',sans-serif;
  transition:transform .12s ease, box-shadow .12s ease}
.btn:hover{background:#1E7FD4;transform:translateY(-1px);box-shadow:0 6px 22px rgba(47,164,255,.35)}
.btn.small{padding:9px 18px;font-size:.9rem}
.btn.ghost{background:transparent;color:var(--blue);border:1px solid var(--navy-line)}
.btn.ghost:hover{border-color:var(--blue);box-shadow:none}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--blue-soft);outline-offset:3px}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(8,17,32,.88);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--navy-line)}
.nav-inner{position:relative}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:'Chakra Petch',sans-serif;font-weight:700;font-size:1.25rem;color:var(--text);text-decoration:none}
.logo span{color:var(--blue)}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a:not(.btn){color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:500}
.nav-links a.btn{color:#FFFFFF}
.nav-links a:not(.btn):hover,.nav-links a:not(.btn).active{color:var(--text)}
.nav-links a.active{border-bottom:2px solid var(--blue);padding-bottom:2px}

/* strip */
.strip{border-top:1px solid var(--navy-line);border-bottom:1px solid var(--navy-line);padding:20px 0}
.strip .wrap{display:flex;gap:30px;flex-wrap:wrap;justify-content:center;color:var(--muted);font-size:.9rem}
.strip b{color:var(--text);font-weight:600}

/* live pulse card (signature) */
.pulse-card{background:linear-gradient(160deg,var(--navy-panel),#0A1729);
  border:1px solid var(--navy-line);border-radius:var(--radius);padding:26px;
  box-shadow:0 24px 60px rgba(0,0,0,.45)}
.pulse-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.pulse-head .name{font-family:'Chakra Petch',sans-serif;font-weight:600;font-size:1rem}
.pulse-head .status{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--ok)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
.readouts{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px}
.readout{background:rgba(47,164,255,.06);border:1px solid var(--navy-line);border-radius:10px;padding:14px}
.readout .label{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.readout .value{font-family:'IBM Plex Mono',monospace;font-size:1.5rem;color:var(--text)}
.readout .value small{font-size:.85rem;color:var(--muted)}
.ecg{width:100%;height:56px;display:block}
.ecg polyline{fill:none;stroke:var(--blue);stroke-width:2;stroke-linejoin:round;
  stroke-dasharray:600;stroke-dashoffset:600;animation:trace 3.2s linear infinite}
@keyframes trace{to{stroke-dashoffset:0}}
.pulse-foot{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted);margin-top:10px}

/* photo slots (real Pulse images drop in here) */
.photo-slot{background:repeating-linear-gradient(45deg,#0A1729,#0A1729 12px,#0C1B30 12px,#0C1B30 24px);
  border:1px dashed var(--navy-line);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;min-height:280px;
  color:var(--muted);font-family:'IBM Plex Mono',monospace;font-size:.82rem;text-align:center;padding:20px}
.photo-slot.small{min-height:150px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{background:var(--navy-panel);border:1px solid var(--navy-line);border-radius:var(--radius);padding:22px}
.step .num{font-family:'IBM Plex Mono',monospace;color:var(--blue);font-size:.8rem;margin-bottom:10px}
.step h3{font-size:1rem;margin-bottom:8px}
.step p{font-size:.9rem;color:var(--muted)}

/* generic feature list */
.feature-list{list-style:none;margin:22px 0}
.feature-list li{padding:9px 0;border-bottom:1px solid rgba(27,52,84,.6);color:var(--text);display:flex;gap:12px;align-items:baseline}
.feature-list li::before{content:"▸";color:var(--blue);font-size:.85rem}
.feature-list li span{color:var(--muted)}

/* faq */
.faq{max-width:760px}
details{border:1px solid var(--navy-line);border-radius:10px;margin-bottom:12px;background:var(--navy-panel)}
summary{padding:18px 22px;cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::after{content:"+";color:var(--blue);font-size:1.2rem;font-family:'IBM Plex Mono',monospace}
details[open] summary::after{content:"–"}
details .body{padding:0 22px 20px;color:var(--muted);font-size:.94rem}

/* footer */
.footer-cta{text-align:center;border-top:1px solid var(--navy-line)}
.footer-cta h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px}
.footer-cta p{color:var(--muted);margin-bottom:30px}
footer{border-top:1px solid var(--navy-line);padding:30px 0;font-size:.82rem;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{text-decoration:none}

/* notify / capture form */
.notify{background:var(--navy-panel);border:1px solid var(--navy-line);border-radius:var(--radius);padding:24px}
.notify .row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.notify input[type=email]{flex:1;min-width:220px;background:var(--navy-deep);border:1px solid var(--navy-line);
  border-radius:10px;padding:12px 14px;color:var(--text);font-size:.98rem;font-family:'IBM Plex Sans',sans-serif}
.notify input::placeholder{color:var(--muted)}
.notify .fine{font-size:.8rem;color:var(--muted);margin-top:12px}
.notify .ok-msg{display:none;color:var(--ok);font-size:.92rem;margin-top:12px}

@media (prefers-reduced-motion: reduce){
  .ecg polyline{animation:none;stroke-dashoffset:0}
  .btn:hover{transform:none}
}
/* ---------- mobile nav ---------- */
.nav-toggle{display:none;background:transparent;border:1px solid var(--navy-line);border-radius:9px;
  width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center;padding:0}
.nav-toggle:hover{border-color:var(--blue)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;transition:background .15s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--text);transition:transform .2s ease, top .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:900px){
  .steps{grid-template-columns:repeat(2,1fr)}
  section{padding:64px 0}

  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--navy-deep);
    border-bottom:1px solid var(--navy-line);
    padding:8px 22px 20px;
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{
    padding:15px 4px;font-size:1rem;
    border-bottom:1px solid rgba(27,52,84,.6);
  }
  .nav-links a.active{border-bottom:1px solid rgba(27,52,84,.6);color:var(--blue)}
  .nav-links a:last-child{border-bottom:none}
  .nav-links .btn{margin-top:14px;text-align:center;padding:13px 24px}
}
@media (max-width:540px){
  .steps{grid-template-columns:1fr}
}