/* ==========================================================================
   SynTrainventory — shared stylesheet
   Tokens
   ========================================================================== */
:root{
  --ink:        #161B22;
  --ink-soft:   #4B5259;
  --ink-faint:  #7A8087;
  --paper:      #E7E9E3;
  --paper-deep: #DCDFD6;
  --card:       #F5F4EF;
  --line:       #C7CABF;
  --accent:     #2F6F5E;
  --accent-dk:  #234F43;
  --accent-tint:#DCE7E1;
  --amber:      #B8823A;
  --white:      #FBFAF7;

  --font-display: "Piazzolla", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1180px;
  --radius: 3px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ 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:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img,svg{ display:block; max-width:100%; }

a{ color:inherit; text-decoration:none; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  margin:0;
  letter-spacing:-0.01em;
}

p{ margin:0; }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* Eyebrow / ledger-tag label — used as a section reference code */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--accent-dk);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--accent);
  display:inline-block;
}

:focus-visible{
  outline:2px solid var(--accent-dk);
  outline-offset:3px;
}

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(231,233,227,0.92);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:20px;
  padding-bottom:20px;
}
.wordmark{
  font-family:var(--font-display);
  font-size:21px;
  font-weight:600;
  letter-spacing:-0.01em;
  color:var(--ink);
}
.wordmark span{ color:var(--accent); }

.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  font-size:14.5px;
  font-weight:500;
}
.nav-links a{
  position:relative;
  padding:4px 0;
  color:var(--ink-soft);
  transition:color .18s ease;
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a.current{ color:var(--ink); }
.nav-links a.current::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-3px;
  height:2px;
  background:var(--accent);
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-weight:600;
  font-size:14.5px;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .15s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn-primary{
  background:var(--ink);
  color:var(--white);
}
.btn-primary:hover{ background:var(--accent-dk); }
.btn-outline{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-outline:hover{ background:var(--ink); color:var(--white); }
.btn-sm{ padding:10px 18px; font-size:13.5px; }

.nav-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  padding:6px;
}
.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--ink);
  margin:5px 0;
  transition:transform .2s ease, opacity .2s ease;
}

@media (max-width: 880px){
  .nav-links{
    position:fixed;
    inset:73px 0 0 0;
    background:var(--paper);
    flex-direction:column;
    align-items:flex-start;
    padding:28px 32px;
    gap:22px;
    border-top:1px solid var(--line);
    transform:translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .nav-links.open{
    opacity:1;
    transform:translateY(0);
    pointer-events:auto;
  }
  .nav-toggle{ display:block; }
  .nav-cta{ display:none; }
  .nav-links .btn{ margin-top:6px; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  padding:88px 0 96px;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:64px;
  align-items:center;
}
.hero h1{
  font-size:clamp(34px, 4.4vw, 54px);
  margin-bottom:24px;
}
.hero h1 em{
  color:var(--accent-dk);
  font-style:italic;
}
.hero-lede{
  font-size:18px;
  color:var(--ink-soft);
  max-width:46ch;
  margin-bottom:34px;
}
.hero-actions{
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
}
.text-link{
  font-weight:600;
  font-size:14.5px;
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:border-color .18s ease, color .18s ease;
}
.text-link:hover{ color:var(--accent-dk); border-color:var(--accent-dk); }

.hero-diagram{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  padding:26px;
}
.hero-diagram figcaption{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  margin-top:16px;
  text-align:center;
}

@media (max-width: 880px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero{ padding:56px 0 64px; }
}

/* ==========================================================================
   Sections (generic)
   ========================================================================== */
section{ padding:96px 0; }
.section-border{ border-bottom:1px solid var(--line); }
.section-head{
  max-width:640px;
  margin-bottom:56px;
}
.section-head h2{
  font-size:clamp(28px, 3vw, 38px);
  margin-bottom:18px;
}
.section-head p{
  color:var(--ink-soft);
  font-size:17px;
}
.section-tint{ background:var(--paper-deep); }

@media (max-width: 640px){
  section{ padding:64px 0; }
}

/* About / Who We Are */
.about-body{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:48px;
}
.about-body p{
  color:var(--ink-soft);
  font-size:16.5px;
  margin-bottom:18px;
}
.about-body p:last-child{ margin-bottom:0; }
@media (max-width: 780px){
  .about-body{ grid-template-columns:1fr; }
}

/* ==========================================================================
   Service cards
   ========================================================================== */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.service-card{
  background:var(--card);
  padding:36px 32px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:background .18s ease;
}
.service-card:hover{ background:var(--white); }
.service-icon{
  width:40px;
  height:40px;
  color:var(--accent-dk);
}
.service-card h3{
  font-size:19px;
  font-weight:600;
}
.service-card p{
  color:var(--ink-soft);
  font-size:15px;
}
.service-tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--amber);
}

@media (max-width: 940px){
  .service-grid{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width: 640px){
  .service-grid{ grid-template-columns:1fr; }
}

/* Detailed service rows (services page) */
.service-detail{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:56px;
  align-items:start;
  padding:64px 0;
}
.service-detail + .service-detail{ border-top:1px solid var(--line); }
.service-detail .service-tag{ margin-bottom:14px; display:block; }
.service-detail h3{
  font-size:26px;
  margin-bottom:16px;
}
.service-detail p{
  color:var(--ink-soft);
  font-size:16.5px;
}
.service-visual{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  padding:28px;
  align-self:stretch;
  display:flex;
  align-items:center;
  justify-content:center;
}
@media (max-width: 860px){
  .service-detail{ grid-template-columns:1fr; }
  .service-detail{ padding:48px 0; }
  .service-visual{ order:-1; }
}

/* ==========================================================================
   CTA / Email opt-in
   ========================================================================== */
.cta{
  background:var(--ink);
  color:var(--white);
}
.cta .eyebrow{ color:var(--accent-tint); }
.cta .eyebrow::before{ background:var(--accent-tint); }
.cta-grid{
  display:grid;
  grid-template-columns:1fr auto;
  gap:48px;
  align-items:end;
}
.cta h2{
  color:var(--white);
  font-size:clamp(26px, 3vw, 34px);
  margin-bottom:14px;
}
.cta p{
  color:#C6CAC2;
  font-size:16px;
  max-width:52ch;
}
.optin-form{
  display:flex;
  flex-direction:column;
  gap:12px;
  min-width:340px;
}
.optin-row{
  display:flex;
  gap:0;
  border:1px solid #4A5049;
  border-radius:var(--radius);
  overflow:hidden;
  background:#1F262E;
}
.optin-row input[type="email"]{
  flex:1;
  background:transparent;
  border:none;
  padding:15px 16px;
  color:var(--white);
  font-family:var(--font-body);
  font-size:15px;
}
.optin-row input[type="email"]::placeholder{ color:#8B9089; }
.optin-row input[type="email"]:focus{ outline:none; }
.optin-row button{
  background:var(--accent);
  color:var(--white);
  border:none;
  padding:0 24px;
  font-weight:600;
  font-size:14.5px;
  cursor:pointer;
  transition:background .18s ease;
  white-space:nowrap;
}
.optin-row button:hover{ background:#3B8571; }
.consent-text{
  font-size:12.5px;
  color:#9BA098;
  max-width:360px;
  line-height:1.5;
}
.optin-success{
  display:none;
  font-size:14px;
  color:var(--accent-tint);
  font-weight:600;
}
.optin-success.show{ display:block; }

@media (max-width: 860px){
  .cta-grid{ grid-template-columns:1fr; }
  .optin-form{ min-width:0; width:100%; }
}
@media (max-width: 480px){
  .optin-row{ flex-direction:column; }
  .optin-row button{ padding:14px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{
  padding:56px 0 40px;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
  margin-bottom:40px;
}
.footer-brand .wordmark{ margin-bottom:14px; }
.footer-brand p{
  color:var(--ink-soft);
  font-size:14.5px;
  max-width:38ch;
}
.footer-col h4{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{ list-style:none; margin:0; padding:0; }
.footer-col li{ margin-bottom:11px; }
.footer-col a{
  color:var(--ink-soft);
  font-size:14.5px;
  transition:color .18s ease;
}
.footer-col a:hover{ color:var(--ink); }
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-faint);
  flex-wrap:wrap;
  gap:12px;
}
.footer-bottom .font-mono{ font-family:var(--font-mono); }

@media (max-width: 720px){
  .footer-grid{ grid-template-columns:1fr; gap:32px; }
}

/* ==========================================================================
   Page hero (interior pages)
   ========================================================================== */
.page-hero{
  padding:72px 0 56px;
  border-bottom:1px solid var(--line);
}
.page-hero h1{
  font-size:clamp(32px, 4vw, 46px);
  margin-bottom:20px;
}
.page-hero p{
  color:var(--ink-soft);
  font-size:17.5px;
  max-width:60ch;
}

/* ==========================================================================
   Consultation form
   ========================================================================== */
.consult-wrap{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:64px;
}
.consult-info h2{
  font-size:24px;
  margin-bottom:18px;
}
.consult-info p{
  color:var(--ink-soft);
  font-size:15.5px;
  margin-bottom:14px;
}
.consult-list{
  list-style:none;
  margin:28px 0 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.consult-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--ink-soft);
}
.consult-list svg{
  width:18px; height:18px;
  color:var(--accent);
  flex-shrink:0;
  margin-top:3px;
}

.consult-form{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  padding:40px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.field{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-bottom:20px;
}
.field label{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
}
.field .optional{
  font-weight:400;
  color:var(--ink-faint);
}
.field input,
.field select,
.field textarea{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:12px 14px;
  font-family:var(--font-body);
  font-size:15px;
  background:var(--white);
  color:var(--ink);
  transition:border-color .18s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent-dk);
}
.field textarea{ resize:vertical; min-height:110px; }
.consult-form .btn{ width:100%; justify-content:center; padding:14px 22px; }

.form-success{
  display:none;
  text-align:center;
  padding:40px 20px;
}
.form-success.show{ display:block; }
.form-success svg{
  width:44px; height:44px;
  color:var(--accent);
  margin:0 auto 18px;
}
.form-success h3{ font-size:22px; margin-bottom:10px; }
.form-success p{ color:var(--ink-soft); font-size:15px; }

@media (max-width: 900px){
  .consult-wrap{ grid-template-columns:1fr; }
}
@media (max-width: 560px){
  .form-row{ grid-template-columns:1fr; }
  .consult-form{ padding:28px 22px; }
}