/* ==========================================================================
   Withinair — Point Source Capture
   Design tokens
   ========================================================================== */

:root{
  --navy:        #0B1220;
  --teal-dark:   #1A5954;
  --teal:        #35A08D;
  --mint:        #7FD6C8;
  --gold:        #E8D37A;
  --lavender:    #F5F7FA;
  --white:       #FFFFFF;

  --ink:         #0B1220;
  --ink-soft:    rgba(11,18,32,.66);
  --paper-line:  rgba(11,18,32,.10);
  --line-on-dark: rgba(255,255,255,.14);
  --text-on-dark: rgba(255,255,255,.86);
  --text-on-dark-soft: rgba(255,255,255,.60);

  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 6px;

  --wrap: 1180px;

  --ease: cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:'Poppins',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--white);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  font-weight:400;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }

h1,h2,h3,h4{ margin:0; font-weight:700; letter-spacing:-.02em; line-height:1.06; }
p{ margin:0; }

.wrap{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 32px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:4px;
}

/* ---------- eyebrow / labels ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--teal-dark);
}
.eyebrow::before{
  content:"";
  width:7px; height:7px;
  border-radius:50%;
  background:var(--gold);
  flex:none;
}
.on-dark .eyebrow{ color:var(--mint); }
.on-dark .eyebrow::before{ background:var(--gold); }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 26px;
  border-radius:var(--radius-sm);
  font-weight:600;
  font-size:14.5px;
  letter-spacing:.01em;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .2s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{ }
.btn-gold{
  background:var(--gold);
  color:var(--navy);
}
.btn-gold:hover{ background:#dcc466; }
.btn-outline-dark{
  border-color:rgba(11,18,32,.28);
  color:var(--navy);
  background:transparent;
}
.btn-outline-dark:hover{ border-color:var(--navy); background:var(--navy); color:var(--white); }
.btn-outline-light{
  border-color:var(--line-on-dark);
  color:var(--white);
  background:transparent;
}
.btn-outline-light:hover{ border-color:var(--mint); color:var(--mint); }
.btn-arrow{ transition:transform .25s var(--ease); display:inline-block; }
.btn:hover .btn-arrow{ transform:translateX(3px); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  padding:20px 0;
  transition:background .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease), border-color .35s ease;
  border-bottom:1px solid transparent;
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.site-header.is-solid{
  background:rgba(11,18,32,.92);
  backdrop-filter:blur(14px);
  padding:14px 0;
  border-bottom-color:var(--line-on-dark);
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand svg{ width:34px; height:34px; flex:none; color:var(--mint); }
.brand img{ height:50px; width:auto; flex:none; }
.brand-word{ font-size:20px; font-weight:700; color:var(--white); letter-spacing:-.01em; }
.brand-word span{ font-weight:400; opacity:.82; }

.main-nav{ display:flex; align-items:center; gap:2px; }
.main-nav a{
  position:relative;
  padding:10px 4px;
  margin:0 12px;
  border-radius:0;
  font-size:14px;
  font-weight:600;
  color:var(--text-on-dark);
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:2px;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s var(--ease);
}
.main-nav a:hover{ color:var(--white); }
.main-nav a:hover::after{ transform:scaleX(1); }
.main-nav a.is-active{ color:var(--white); }
.main-nav a.is-active::after{ transform:scaleX(1); background:var(--mint); }

.header-cta{ display:flex; align-items:center; gap:10px; }

.nav-toggle{
  display:none;
  width:42px; height:42px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line-on-dark);
  background:transparent;
  color:var(--white);
  align-items:center; justify-content:center;
  cursor:pointer;
}

@media (max-width: 940px){
  .main-nav{
    position:fixed;
    inset:74px 16px auto 16px;
    background:rgba(11,18,32,.97);
    border:1px solid var(--line-on-dark);
    border-radius:var(--radius-md);
    flex-direction:column;
    align-items:stretch;
    padding:10px;
    gap:2px;
    transform:translateY(-14px);
    opacity:0;
    pointer-events:none;
    transition:opacity .3s var(--ease), transform .3s var(--ease);
  }
  .main-nav.is-open{ opacity:1; transform:translateY(0); pointer-events:auto; }
  .main-nav a{
    margin:0;
    padding:14px 16px 14px 18px;
    border-left:2px solid transparent;
    transition:color .2s ease, border-color .2s ease, background .2s ease;
  }
  .main-nav a::after{ display:none; }
  .main-nav a:hover{ border-left-color:var(--mint); background:rgba(255,255,255,.04); }
  .main-nav a.is-active{ border-left-color:var(--gold); background:rgba(255,255,255,.05); }
  .header-cta .btn-outline-light{ display:none; }
  .nav-toggle{ display:flex; }
}

/* ==========================================================================
   Sections / generic
   ========================================================================== */
section{ position:relative; }
.on-dark{ background:var(--navy); color:var(--white); }
.on-navy{ background:var(--navy); color:var(--white); }
.on-teal{ background:var(--teal-dark); color:var(--white); }
.on-light{ background:var(--lavender); color:var(--ink); }
.on-white{ background:var(--white); color:var(--ink); }

.section-pad{ padding:104px 0; }
@media (max-width:720px){ .section-pad{ padding:72px 0; } }

.section-head{
  max-width:640px;
  margin-bottom:56px;
}
.section-head h2{ font-size:clamp(28px,3.4vw,42px); margin-top:14px; }
.section-head p{ margin-top:16px; font-size:17px; line-height:1.65; color:var(--ink-soft); }
.on-dark .section-head p, .on-navy .section-head p{ color:var(--text-on-dark-soft); }

.section-head.split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:40px;
  max-width:none;
}
.section-head.split .head-copy{ max-width:600px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  background:var(--navy);
  color:var(--white);
  padding:172px 0 120px;
  overflow:hidden;
  position:relative;
  border-bottom:3px solid var(--teal-dark);
}
.hero::before{ content:none; }
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(38px,5.2vw,64px);
  letter-spacing:-.02em;
}
.hero h1 em{ font-style:normal; color:var(--gold); }
.hero-sub{
  margin-top:22px;
  font-size:18px;
  line-height:1.65;
  color:var(--text-on-dark-soft);
  max-width:520px;
}
.hero-actions{ margin-top:34px; display:flex; gap:14px; flex-wrap:wrap; }
.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; }

.hero-stats{
  position:relative;
  margin-top:76px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-on-dark);
  border:1px solid var(--line-on-dark);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.hero-stats div{
  background:rgba(255,255,255,.04);
  padding:24px 22px;
}
.hero-stats .num{ font-size:28px; font-weight:700; color:var(--gold); }
.hero-stats .lbl{ margin-top:6px; font-size:13px; color:var(--text-on-dark-soft); }

@media (max-width:940px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-stats{ grid-template-columns:repeat(2,1fr); }
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card-grid{ display:grid; gap:24px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:940px){ .grid-3,.grid-4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .grid-3,.grid-4,.grid-2{ grid-template-columns:1fr; } }

.card{
  background:var(--white);
  border:1px solid var(--paper-line);
  border-radius:var(--radius-md);
  padding:30px;
  transition:border-color .2s ease, background .2s ease;
}
.card:hover{ border-color:var(--teal-dark); }
.card .icon-badge{
  width:44px; height:44px;
  border-radius:var(--radius-sm);
  background:var(--navy);
  color:var(--mint);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:20px;
}
.card h3{ font-size:19px; }
.card p{ margin-top:10px; font-size:14.5px; line-height:1.65; color:var(--ink-soft); }

.card-dark{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-on-dark);
  color:var(--white);
}
.card-dark p{ color:var(--text-on-dark-soft); }
.card-dark .icon-badge{ background:var(--gold); color:var(--navy); }

/* ---------- process steps ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:0; counter-reset:step; }
.step{ position:relative; padding:0 28px 0 0; }
.step + .step{ border-left:1px solid var(--paper-line); padding-left:28px; }
.on-dark .step + .step, .on-navy .step + .step{ border-left-color:var(--line-on-dark); }
.step .step-num{
  font-family:'Poppins',sans-serif;
  font-weight:700;
  font-size:14px;
  color:var(--gold);
  letter-spacing:.06em;
}
.step h3{ margin-top:14px; font-size:20px; }
.step p{ margin-top:12px; font-size:14.5px; line-height:1.7; color:var(--ink-soft); }
.on-dark .step p, .on-navy .step p{ color:var(--text-on-dark-soft); }
@media (max-width:820px){
  .steps{ grid-template-columns:1fr; gap:36px; }
  .step + .step{ border-left:none; padding-left:0; border-top:1px solid var(--paper-line); padding-top:32px; }
  .on-dark .step + .step, .on-navy .step + .step{ border-top-color:var(--line-on-dark); }
}

/* ---------- tag label ---------- */
.tag{
  display:inline-block;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:5px 10px;
  border-radius:var(--radius-sm);
  background:rgba(53,160,141,.12);
  color:var(--teal-dark);
}
.on-dark .tag, .on-navy .tag{ background:rgba(127,214,200,.14); color:var(--mint); }

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band{
  background:var(--navy);
  color:var(--white);
  border-radius:var(--radius-lg);
  padding:64px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  position:relative;
  overflow:hidden;
  border-top:3px solid var(--gold);
}
.cta-band::after{ content:none; }
.cta-band h2{ font-size:clamp(24px,3vw,34px); max-width:480px; }
.cta-band-actions{ display:flex; gap:14px; flex-wrap:wrap; }
@media (max-width:760px){
  .cta-band{ flex-direction:column; align-items:flex-start; padding:44px 28px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{ background:var(--navy); color:var(--text-on-dark); padding:80px 0 28px; }
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr repeat(4,1fr);
  gap:32px;
  padding-bottom:56px;
  border-bottom:1px solid var(--line-on-dark);
}
.footer-brand p{ margin-top:16px; font-size:14.5px; line-height:1.7; color:var(--text-on-dark-soft); max-width:280px; }
.footer-col h4{ font-size:13px; letter-spacing:.08em; text-transform:uppercase; color:var(--mint); font-weight:600; }
.footer-col ul{ margin-top:18px; display:flex; flex-direction:column; gap:12px; }
.footer-col a{ font-size:14.5px; color:var(--text-on-dark-soft); transition:color .2s ease; }
.footer-col a:hover{ color:var(--white); }
.footer-bottom{
  padding-top:26px;
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:14px;
  font-size:13px;
  color:var(--text-on-dark-soft);
}
.social-row{ display:flex; gap:10px; }
.social-row a{
  width:36px; height:36px;
  border:1px solid var(--line-on-dark);
  border-radius:var(--radius-sm);
  display:flex; align-items:center; justify-content:center;
  transition:border-color .2s ease, color .2s ease;
}
.social-row a:hover{ border-color:var(--mint); color:var(--mint); }

@media (max-width:940px){
  .footer-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:560px){
  .footer-grid{ grid-template-columns:1fr; }
}

/* ==========================================================================
   Page header (interior pages)
   ========================================================================== */
.page-hero{
  background:var(--navy);
  color:var(--white);
  padding:168px 0 84px;
  position:relative;
  overflow:hidden;
  border-bottom:3px solid var(--teal-dark);
}
.page-hero::before{ content:none; }
.page-hero h1{ font-size:clamp(34px,4.6vw,54px); max-width:760px; margin-top:16px; }
.page-hero .lead{ margin-top:20px; max-width:600px; font-size:17.5px; line-height:1.7; color:var(--text-on-dark-soft); }
.breadcrumb{ font-size:13px; color:var(--text-on-dark-soft); display:flex; gap:8px; align-items:center; margin-bottom:8px;}
.breadcrumb a:hover{ color:var(--mint); }

/* ==========================================================================
   Utility
   ========================================================================== */
.mt-40{ margin-top:40px; }
.center-text{ text-align:center; margin-left:auto; margin-right:auto; }
.divider{ height:1px; background:var(--paper-line); border:none; margin:0; }
.on-dark .divider, .on-navy .divider{ background:var(--line-on-dark); }

[data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .5s ease, transform .5s ease;
}
[data-reveal].is-visible{ opacity:1; transform:translateY(0); }

/* ==========================================================================
   Forms (contact page)
   ========================================================================== */
.form-field{ display:flex; flex-direction:column; gap:8px; }
.form-field label{ font-size:13.5px; font-weight:600; color:var(--ink); }
.form-field input,
.form-field select,
.form-field textarea{
  font-family:inherit;
  font-size:15px;
  padding:13px 16px;
  border-radius:var(--radius-sm);
  border:1.5px solid var(--paper-line);
  background:var(--white);
  color:var(--ink);
  transition:border-color .2s ease;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  border-color:var(--teal);
  outline:none;
}
#form-status{
  display:none;
  margin-top:18px;
  font-size:14px;
  color:var(--teal-dark);
  font-weight:500;
}
#form-status.is-visible{ display:block; }
#form-status.is-error{ color:#B3261E; }

.form-banner{
  margin-bottom:22px;
  padding:14px 18px;
  border-radius:var(--radius-sm);
  font-size:14.5px;
  font-weight:500;
  border:1.5px solid transparent;
}
.form-banner-sent{
  background:rgba(53,160,141,.08);
  border-color:rgba(53,160,141,.35);
  color:var(--teal-dark);
}
.form-banner-error{
  background:rgba(179,38,30,.06);
  border-color:rgba(179,38,30,.3);
  color:#B3261E;
}