/* =========================================================
   AEROBLOC — Design Tokens
   ========================================================= */
:root{
  --asphalt:      #14181C;
  --asphalt-2:    #1B2025;
  --storm:        #1B2B3A;
  --storm-2:      #233447;
  --air-teal:     #5EC8D8;
  --air-teal-dim: #3D8E9C;
  --signal-amber: #FF8A3D;
  --signal-amber-dim:#D96E26;
  --mist:         #F4F6F7;
  --mist-2:       #E7EBED;
  --ink:          #0B0E11;
  --ink-soft:     #4A5560;
  --line:         rgba(244,246,247,0.12);
  --line-dark:    rgba(11,14,17,0.10);

  --f-display: "Big Shoulders", "Arial Narrow", sans-serif;
  --f-body: "Inter", -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", "Courier New", monospace;

  --max: 1180px;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body{
  margin:0;
  font-family: var(--f-body);
  background: var(--mist);
  color: var(--ink);
  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{ margin:0; font-family: var(--f-display); font-weight:700; letter-spacing:0.01em; }
p{ margin:0; }

:focus-visible{
  outline: 2px solid var(--air-teal);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.eyebrow{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--air-teal);
}
.eyebrow.on-light{ color: var(--air-teal-dim); }

/* =========================================================
   NAV
   ========================================================= */
.site-nav{
  position: sticky; top:0; z-index: 50;
  background: rgba(20,24,28,0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height: 72px;
}
.brand{
  display:flex; align-items:center; gap:0.55rem;
  font-family: var(--f-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--mist);
}
.brand-mark{ width:26px; height:26px; flex-shrink:0; }
.brand-mark path{ stroke: var(--air-teal); }

.nav-links{ display:flex; align-items:center; gap:2.1rem; }
.nav-links a{
  font-size: 0.92rem;
  color: rgba(244,246,247,0.78);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover{ color: var(--mist); }
.nav-links a.active{ color: var(--air-teal); }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:0.5rem;
  font-family: var(--f-body); font-weight: 600; font-size: 0.92rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-amber{ background: var(--signal-amber); color: var(--ink); }
.btn-amber:hover{ background: #ff9c5c; }
.btn-ghost{ background: transparent; color: var(--mist); border-color: rgba(244,246,247,0.3); }
.btn-ghost:hover{ border-color: var(--air-teal); color: var(--air-teal); }
.btn-dark{ background: var(--asphalt); color: var(--mist); }
.btn-dark:hover{ background: var(--ink); }

.nav-toggle{
  display:none;
  width: 38px; height:38px;
  border:1px solid rgba(244,246,247,0.3);
  border-radius: 8px;
  background: transparent;
  position: relative;
  cursor:pointer;
}
.nav-toggle span{
  position:absolute; left:9px; right:9px; height:2px; background: var(--mist);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle span:nth-child(1){ top:13px; }
.nav-toggle span:nth-child(2){ top:18px; }
.nav-toggle span:nth-child(3){ top:23px; }
.nav-toggle.open span:nth-child(1){ transform: translateY(5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 880px){
  .nav-links{
    position: fixed; inset: 72px 0 0 0;
    background: var(--asphalt);
    flex-direction: column; justify-content:flex-start;
    padding: 2rem var(--pad);
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links a{ font-size: 1.1rem; }
  .nav-toggle{ display:block; }
}

/* =========================================================
   SECTION SHELLS
   ========================================================= */
section{ position: relative; }
.sec-dark{ background: var(--asphalt); color: var(--mist); }
.sec-storm{ background: var(--storm); color: var(--mist); }
.sec-light{ background: var(--mist); color: var(--ink); }
.sec-light-2{ background: var(--mist-2); color: var(--ink); }

.sec-pad{ padding: clamp(3.5rem, 8vw, 6.5rem) 0; }

.divider-flow{
  height: 64px;
  display:block;
  width:100%;
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  background: linear-gradient(180deg, var(--asphalt) 0%, var(--storm) 100%);
  color: var(--mist);
  overflow: hidden;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: 0;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items:center;
}
@media (max-width: 940px){
  .hero-grid{ grid-template-columns: 1fr; }
}
.hero h1{
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 0.98;
  text-transform: uppercase;
  margin: 0.6rem 0 1.1rem;
}
.hero h1 em{ color: var(--air-teal); font-style: normal; }
.hero p.lede{
  font-size: 1.12rem;
  color: rgba(244,246,247,0.82);
  max-width: 32rem;
  margin-bottom: 2rem;
}
.hero-ctas{ display:flex; gap: 0.9rem; flex-wrap:wrap; margin-bottom: 2.4rem; }

.hero-art{
  position:relative;
  min-height: 360px;
}
.hero-art svg{ width:100%; height:auto; }

.stream{
  fill:none; stroke: var(--air-teal); stroke-width:2; opacity:0.85;
  stroke-dasharray: 10 14;
  animation: flow 2.4s linear infinite;
}
.stream.s2{ animation-duration: 3.1s; opacity:0.5; }
.stream.s3{ animation-duration: 1.9s; opacity:0.65; }
@keyframes flow{ to{ stroke-dashoffset: -240; } }

.rain{ fill: rgba(94,200,216,0.55); }
.drop{ animation: fall 1.6s linear infinite; }
@keyframes fall{
  0%{ transform: translateY(-10px); opacity:0; }
  15%{ opacity:1; }
  70%{ opacity:1; }
  100%{ transform: translateY(60px); opacity:0; }
}

/* =========================================================
   TYPE UTILS
   ========================================================= */
.h2{
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  text-transform: uppercase;
  line-height: 1.03;
}
.h3{
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  text-transform: uppercase;
}
.kicker-row{ display:flex; align-items:baseline; gap: 1rem; margin-bottom: 0.9rem; flex-wrap:wrap; }
.lede-2{ font-size: 1.05rem; color: var(--ink-soft); max-width: 42rem; }
.lede-2.on-dark{ color: rgba(244,246,247,0.78); }

/* =========================================================
   GRID / CARDS
   ========================================================= */
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; }
.grid-2{ display:grid; grid-template-columns: repeat(2,1fr); gap: 1.4rem; }
@media (max-width: 880px){
  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
}

.card{
  background: var(--mist);
  border: 1px solid var(--line-dark);
  border-radius: 14px;
  padding: 1.8rem;
}
.card-dark{
  background: var(--storm-2);
  border: 1px solid rgba(244,246,247,0.08);
  border-radius: 14px;
  padding: 1.8rem;
  color: var(--mist);
}
.card .stat{
  font-family: var(--f-display);
  font-size: 2.1rem;
  color: var(--air-teal-dim);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.card-dark .stat{ color: var(--air-teal); }
.card h4, .card-dark h4{ font-size: 1.02rem; text-transform: uppercase; margin-bottom: 0.5rem; }
.card p, .card-dark p{ font-size: 0.92rem; color: var(--ink-soft); }
.card-dark p{ color: rgba(244,246,247,0.72); }

/* =========================================================
   COMPARISON TABLE (compact, reused from deck concept)
   ========================================================= */
.compare{
  width:100%;
  border-collapse: separate;
  border-spacing: 0 0.6rem;
}
.compare th, .compare td{
  text-align:left;
  padding: 1rem 1.1rem;
  font-size: 0.92rem;
  vertical-align: top;
}
.compare thead th{
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 0.3rem;
}
.compare tbody tr{ background: #fff; }
.compare tbody td:first-child{
  font-weight: 700;
  width: 26%;
  border-radius: 10px 0 0 10px;
}
.compare tbody td:nth-child(2){ background: #EEF6F8; }
.compare tbody td:last-child{ background: #F2F2F1; border-radius: 0 10px 10px 0; }
.compare tbody td{ background: #fff; }
.compare-col-label{
  display:flex; align-items:center; gap:0.5rem; font-size:0.78rem; text-transform:uppercase;
  font-family: var(--f-mono); letter-spacing:0.06em; margin-bottom:0.4rem;
}
@media (max-width: 760px){
  .compare thead{ display:none; }
  .compare tbody td{ display:block; width:100%; border-radius: 10px !important; margin-bottom:0.3rem; }
  .compare tbody tr{ display:block; background:transparent; margin-bottom: 1rem; }
}

/* =========================================================
   TIMELINE (roadmap)
   ========================================================= */
.timeline{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  position: relative;
}
@media (max-width: 880px){ .timeline{ grid-template-columns:1fr; } }
.tl-step{
  border-top: 2px solid var(--air-teal);
  padding-top: 1.1rem;
}
.tl-num{
  font-family: var(--f-mono); color: var(--air-teal); font-size:0.85rem; letter-spacing:0.05em;
}
.tl-step h4{ font-size:1.05rem; text-transform:uppercase; margin: 0.4rem 0 0.5rem; }
.tl-step p{ font-size:0.9rem; color: rgba(244,246,247,0.72); }

/* =========================================================
   ZONES DIAGRAM (technology page)
   ========================================================= */
.zones-wrap{ display:grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items:center; }
@media (max-width:900px){ .zones-wrap{ grid-template-columns:1fr; } }
.zone-item{ display:flex; gap:1rem; padding: 0.95rem 0; border-bottom:1px solid var(--line); }
.zone-item:last-child{ border-bottom:none; }
.zone-dot{ width:10px; height:10px; border-radius:50%; background: var(--air-teal); margin-top:0.4rem; flex-shrink:0; }
.zone-item h4{ font-size:0.95rem; text-transform:uppercase; margin-bottom:0.25rem; }
.zone-item p{ font-size:0.86rem; color: rgba(244,246,247,0.7); }

/* =========================================================
   SPECS TABLE
   ========================================================= */
.specs{ width:100%; border-collapse:collapse; font-family: var(--f-mono); font-size:0.86rem; }
.specs tr{ border-bottom: 1px solid var(--line-dark); }
.specs td{ padding: 0.85rem 0.4rem; }
.specs td:first-child{ color: var(--ink-soft); width:46%; }
.specs td:last-child{ font-weight:600; }

/* =========================================================
   FORM
   ========================================================= */
.form-row{ display:flex; gap:0.7rem; flex-wrap:wrap; }
.form-row input[type=email], .form-row input[type=text]{
  flex:1; min-width:220px;
  padding: 0.85rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(244,246,247,0.25);
  background: rgba(244,246,247,0.06);
  color: var(--mist);
  font-family: var(--f-body);
  font-size: 0.95rem;
}
.form-row input::placeholder{ color: rgba(244,246,247,0.45); }
.form-row input:focus{ outline: 2px solid var(--air-teal); }

.field{ margin-bottom: 1.2rem; }
.field label{ display:block; font-size:0.82rem; margin-bottom:0.4rem; color: var(--ink-soft); }
.field input, .field textarea, .field select{
  width:100%;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--line-dark);
  background: #fff;
  font-family: var(--f-body);
  font-size: 0.95rem;
  color: var(--ink);
}
.field textarea{ min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus{ outline:2px solid var(--air-teal-dim); border-color: transparent; }

.form-note{ font-size: 0.8rem; color: var(--ink-soft); margin-top: 0.8rem; }
.form-success{
  display:none;
  background: #EAF8EF; color:#1F6B3A;
  border-radius: 10px; padding: 0.9rem 1.1rem; font-size:0.9rem; margin-top:1rem;
}
.form-success.show{ display:block; }

/* =========================================================
   FOOTER
   ========================================================= */
footer{ background: var(--ink); color: rgba(244,246,247,0.6); }
.footer-grid{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem;
  padding: 3.2rem 0 2rem;
}
@media (max-width: 880px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
.footer-brand{ display:flex; align-items:center; gap:0.5rem; color: var(--mist); font-family: var(--f-display); font-size:1.15rem; margin-bottom:0.8rem; }
.footer-col h5{ font-family: var(--f-mono); font-size:0.72rem; letter-spacing:0.12em; text-transform:uppercase; color: rgba(244,246,247,0.4); margin-bottom: 0.9rem; }
.footer-col ul li{ margin-bottom: 0.6rem; font-size:0.88rem; }
.footer-col ul li a:hover{ color: var(--air-teal); }
.footer-bottom{
  border-top: 1px solid rgba(244,246,247,0.1);
  padding: 1.4rem 0;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:0.6rem;
  font-size: 0.78rem;
}

/* =========================================================
   REVEAL ON SCROLL
   ========================================================= */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in{ opacity:1; transform: translateY(0); }

/* =========================================================
   PAGE HEADER (sub-pages)
   ========================================================= */
.page-head{ padding: clamp(3rem,7vw,5rem) 0 clamp(2rem,5vw,3rem); }
.breadcrumb{ font-family: var(--f-mono); font-size:0.74rem; letter-spacing:0.08em; color: var(--air-teal); margin-bottom:1rem; text-transform:uppercase; }

.tag{
  display:inline-flex; align-items:center; gap:0.4rem;
  font-family: var(--f-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em;
  background: rgba(94,200,216,0.12); color: var(--air-teal-dim);
  padding: 0.35rem 0.7rem; border-radius:999px; margin-bottom:1rem;
}
.tag.on-dark{ background: rgba(94,200,216,0.14); color: var(--air-teal); }