/* =====================================================================
   Snow Aviation International — site stylesheet
   Defense-prime aesthetic anchored in the SAI navy + chrome brand identity
   ===================================================================== */

:root{
  /* Core ink / surfaces — deep navy (defense-prime) */
  --ink:        #0A0F1A;   /* near-black navy */
  --ink-2:      #0C1322;
  --panel:      #111A2B;
  --panel-2:    #16213A;
  --line:       rgba(255,255,255,.10);
  --line-2:     rgba(255,255,255,.18);

  /* Brand navy + steel (sampled from the SAI emblem).
     Variable names kept generic for backwards-compatibility. */
  --green-900:  #0A1326;   /* deep navy */
  --green-800:  #0F1E3C;
  --green-700:  #14264A;   /* primary brand navy (logo text) */
  --green-500:  #2E5BA6;   /* mid blue */
  --green-400:  #5E8FD6;   /* bright steel-blue accent */

  /* Chrome / silver highlight from the emblem */
  --chrome:     #C9D4E2;
  --orange:     #E2662A;   /* legacy livery accent (unused) */

  /* Neutrals / light surfaces */
  --steel:      #93A0B5;
  --steel-2:    #6E7B90;
  --paper:      #F4F6FA;
  --paper-2:    #E8ECF3;
  --paper-ink:  #101A2E;
  --paper-mut:  #4C5870;

  --white:      #FFFFFF;

  /* Type */
  --f-display: "Saira", "Arial Narrow", system-ui, sans-serif;
  --f-eyebrow: "Oswald", "Arial Narrow", sans-serif;
  --f-body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
}

/* ----------------------------- reset ------------------------------ */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--f-body);
  background:var(--ink);
  color:#D9E0DB;
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* --------------------------- typography --------------------------- */
h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;line-height:1.04;letter-spacing:-.01em;color:#fff}
.h-xl{font-size:clamp(2.6rem,6.2vw,5.2rem);text-transform:uppercase;letter-spacing:-.02em}
.h-lg{font-size:clamp(2rem,4vw,3.2rem);text-transform:uppercase}
.h-md{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.eyebrow{
  font-family:var(--f-eyebrow);font-weight:600;text-transform:uppercase;
  letter-spacing:.34em;font-size:.78rem;color:var(--green-400);
  display:inline-flex;align-items:center;gap:.7rem;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--green-400);display:inline-block}
.eyebrow.center{justify-content:center}
.lead{font-size:clamp(1.05rem,1.6vw,1.28rem);color:#C2CCC5;max-width:62ch}
.muted{color:var(--steel)}

/* --------------------------- layout ------------------------------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.section{padding:clamp(64px,9vw,128px) 0}
.section.tight{padding:clamp(48px,6vw,84px) 0}
.section.light{background:var(--paper);color:var(--paper-ink)}
.section.light h1,.section.light h2,.section.light h3,.section.light h4{color:#101A2E}
.section.light .lead{color:#3C475C}
.section.light .muted{color:var(--paper-mut)}
.section.panel{background:var(--ink-2)}
.divider{height:1px;background:var(--line);border:0}

.grid{display:grid;gap:clamp(20px,3vw,40px)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center}

/* ---------------------------- header ------------------------------ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px var(--gutter);
  background:#fff;
  border-bottom:1px solid #E2E7EF;
  transition:box-shadow .3s ease,padding .3s ease;
}
.site-header.scrolled{
  box-shadow:0 6px 24px rgba(10,19,38,.10);
  padding-top:9px;padding-bottom:9px;
}
.brand-group{display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:13px}
.brand .logo{height:92px;width:auto;flex:none;transition:height .3s ease;display:block}
.site-header.scrolled .brand .logo{height:70px}
.brand-group{display:flex;align-items:center;gap:20px}
.brand-tag{font-family:var(--f-display);font-weight:800;text-transform:uppercase;
  letter-spacing:.06em;font-size:1.12rem;line-height:1.08;color:var(--green-700);
  padding-left:20px;border-left:3px solid var(--green-500);white-space:nowrap}
.site-header.scrolled .brand-tag{font-size:1rem}
@media (max-width:980px){.brand-tag{display:none}}
.brand-tag{font-family:var(--f-eyebrow);font-weight:600;text-transform:uppercase;
  letter-spacing:.16em;font-size:.74rem;line-height:1.3;color:var(--green-700);
  padding-left:18px;border-left:1px solid #D4DBE6;white-space:nowrap}
.site-header.scrolled .brand-tag{font-size:.7rem}
@media (max-width:860px){.brand-tag{display:none}}

.nav{display:flex;align-items:center;gap:32px}
.nav a{
  font-family:var(--f-eyebrow);font-weight:500;text-transform:uppercase;
  letter-spacing:.15em;font-size:.82rem;color:#33405A;position:relative;padding:4px 0;
  transition:color .2s;
}
.nav a:hover,.nav a.active{color:var(--green-700)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--green-500)}
.nav .btn{color:#fff}

.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--f-eyebrow);font-weight:600;text-transform:uppercase;letter-spacing:.12em;
  font-size:.82rem;padding:13px 26px;border:1px solid var(--green-500);
  background:var(--green-700);color:#fff;transition:.22s ease;cursor:pointer;
}
.btn:hover{background:var(--green-500);border-color:var(--green-400);transform:translateY(-1px)}
.btn.ghost{background:transparent;border-color:var(--line-2);color:#fff}
.btn.ghost:hover{border-color:var(--green-400);background:rgba(94,143,214,.10)}
.btn.dark{background:var(--green-700);border-color:var(--green-700);color:#fff}
.btn.lg{padding:16px 34px;font-size:.9rem}
.btn .arr{transition:transform .22s}
.btn:hover .arr{transform:translateX(4px)}

.nav-toggle{display:none;background:none;border:1px solid #CDD5E2;width:46px;height:42px;cursor:pointer;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.nav-toggle span{width:20px;height:2px;background:var(--green-700);transition:.25s}

/* ----------------------------- hero ------------------------------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
.hero .bg{position:absolute;inset:0;z-index:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero .bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(7,11,22,.92) 0%,rgba(7,11,22,.66) 42%,rgba(7,11,22,.25) 100%),
    linear-gradient(0deg,rgba(7,11,22,.85) 0%,rgba(7,11,22,0) 38%);
}
.hero .inner{position:relative;z-index:2;padding-top:120px;padding-bottom:60px;max-width:880px}
.hero h1{margin:.5rem 0 1.3rem}
.hero .lead{color:#D7E0DA}
.hero .cta-row{display:flex;gap:16px;margin-top:2.4rem;flex-wrap:wrap}
.scroll-cue{position:absolute;bottom:26px;left:var(--gutter);z-index:2;display:flex;align-items:center;gap:12px;font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.3em;font-size:.68rem;color:var(--steel)}
.scroll-cue .ln{width:46px;height:1px;background:var(--steel-2);position:relative;overflow:hidden}
.scroll-cue .ln::after{content:"";position:absolute;left:-46px;top:0;height:100%;width:46px;background:var(--green-400);animation:cue 2.4s infinite}
@keyframes cue{0%{left:-46px}60%,100%{left:46px}}

/* statement bar */
.statbar{background:var(--green-900);border-top:1px solid var(--green-700);border-bottom:1px solid rgba(0,0,0,.3)}
.statbar .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:34px 28px;border-right:1px solid rgba(255,255,255,.10)}
.stat:last-child{border-right:0}
.stat .n{font-family:var(--f-display);font-weight:700;font-size:clamp(2rem,3.4vw,2.9rem);color:#fff;line-height:1}
.stat .n small{font-size:1.3rem;color:var(--green-400);margin-left:2px}
.stat .l{font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;color:#A9B7AE;margin-top:10px}

/* ---------------------- page hero (interior) ---------------------- */
.page-hero{position:relative;padding:160px 0 70px;background:var(--ink-2);overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;top:0;right:-5%;width:55%;height:100%;
  background:radial-gradient(ellipse at 70% 30%,rgba(46,91,166,.42),transparent 65%);z-index:0}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{margin-top:1rem;max-width:18ch}
.page-hero .lead{margin-top:1.4rem}
.crumb{font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.2em;font-size:.74rem;color:var(--steel)}
.crumb a:hover{color:var(--green-400)}

/* ----------------------------- cards ------------------------------ */
.card{background:var(--panel);border:1px solid var(--line);padding:34px 30px;transition:.25s ease;position:relative}
.card:hover{border-color:var(--green-500);transform:translateY(-3px);background:var(--panel-2)}
.card .num{font-family:var(--f-eyebrow);color:var(--green-400);letter-spacing:.2em;font-size:.78rem}
.card h3{margin:14px 0 10px;font-size:1.35rem}
.card p{color:#AFBAB3;font-size:.97rem}
.card .ic{width:46px;height:46px;margin-bottom:18px;color:var(--green-400)}
.section.light .card{background:#fff;border-color:#DCE3DC;box-shadow:0 1px 0 rgba(0,0,0,.02)}
.section.light .card:hover{border-color:var(--green-500);box-shadow:0 16px 40px rgba(16,40,25,.10)}
.section.light .card p{color:#4C5870}

/* feature media block */
.media{position:relative;overflow:hidden;border:1px solid var(--line)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.media:hover img{transform:scale(1.04)}
.media .tag{position:absolute;left:0;bottom:0;background:rgba(8,12,9,.82);backdrop-filter:blur(4px);
  padding:9px 16px;font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.16em;font-size:.72rem;color:#fff;border-top:2px solid var(--green-400)}
.ratio-43{aspect-ratio:4/3}
.ratio-169{aspect-ratio:16/9}
.ratio-32{aspect-ratio:3/2}

/* program rows */
.prow{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);background:var(--panel)}
.prow + .prow{border-top:0}
.prow .txt{padding:clamp(28px,4vw,56px)}
.prow .img{min-height:300px;background:#0a1326}
.prow .img img{width:100%;height:100%;object-fit:cover}
.prow.rev .txt{order:2}
.prow .desg{font-family:var(--f-eyebrow);color:var(--green-400);letter-spacing:.22em;text-transform:uppercase;font-size:.76rem}
.prow h3{font-size:clamp(1.6rem,2.6vw,2.2rem);margin:10px 0 14px;text-transform:uppercase}
.prow ul.spec{margin-top:20px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}
.prow ul.spec li{background:var(--panel);padding:14px 4px 4px}
.prow ul.spec b{display:block;font-family:var(--f-display);color:#fff;font-size:1.15rem}
.prow ul.spec span{font-size:.74rem;color:var(--steel);text-transform:uppercase;letter-spacing:.12em}

/* checklist */
.checks{display:grid;gap:14px;margin-top:8px}
.checks li{display:flex;gap:14px;align-items:flex-start;font-size:1rem;color:#C2CCC5}
.section.light .checks li{color:#3C475C}
.checks li::before{content:"";flex:none;width:22px;height:22px;margin-top:2px;
  background:var(--green-700);border:1px solid var(--green-500);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/15px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/15px no-repeat;}

/* timeline */
.timeline{position:relative;margin-top:20px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl{position:relative;padding:0 0 38px}
.tl::before{content:"";position:absolute;left:-34px;top:4px;width:16px;height:16px;border-radius:50%;background:var(--ink);border:3px solid var(--green-500)}
.tl .yr{font-family:var(--f-display);font-weight:700;color:var(--green-400);font-size:1.3rem}
.tl h4{margin:4px 0 6px;font-size:1.15rem}
.tl p{color:#AFBAB3;font-size:.96rem;max-width:60ch}
.section.light .tl::before{background:#fff}
.section.light .tl p{color:#4C5870}

/* logo strip */
.logos{display:flex;flex-wrap:wrap;gap:14px 40px;align-items:center;margin-top:18px}
.logos span{font-family:var(--f-display);font-weight:600;color:#7D8A81;font-size:1.05rem;letter-spacing:.02em}
.section.light .logos span{color:#8A958C}

/* CTA band */
.cta-band{position:relative;background:linear-gradient(120deg,var(--green-900),var(--ink-2));border-top:1px solid var(--green-700);border-bottom:1px solid var(--line);text-align:center;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% -20%,rgba(94,143,214,.20),transparent 60%)}
.cta-band .wrap{position:relative;z-index:2}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:start}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;color:var(--steel);margin-bottom:7px}
.field input,.field textarea,.field select{
  width:100%;background:var(--ink);border:1px solid var(--line-2);color:#fff;
  padding:13px 15px;font-family:var(--f-body);font-size:.98rem;transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--green-400);background:#0A0F1A}

/* team / leadership — photo-forward centered cards */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,28px)}
.person{background:var(--panel);border:1px solid var(--line);padding:38px 28px 32px;transition:.25s ease;text-align:center;display:flex;flex-direction:column;align-items:center}
.person:hover{border-color:var(--green-500);transform:translateY(-4px);background:var(--panel-2)}
.person .ph,.person .av{width:140px;height:140px;border-radius:50%;flex:none;margin-bottom:22px;
  border:1px solid var(--line-2);box-shadow:0 8px 28px rgba(0,0,0,.35);object-fit:cover;object-position:center top}
.person .av{display:flex;align-items:center;justify-content:center;
  font-family:var(--f-display);font-weight:700;font-size:2.4rem;color:#fff;letter-spacing:.02em;
  background:linear-gradient(150deg,var(--green-500),var(--green-900))}
.person .nm{font-family:var(--f-display);font-weight:700;color:#fff;font-size:1.32rem;line-height:1.12}
.person .ti{font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.14em;font-size:.75rem;color:var(--green-400);margin-top:9px}
.person p{color:#AEB9C8;font-size:.92rem;line-height:1.55;margin-top:13px}
.section.light .person{background:#fff;border-color:#DCE3EC}
.section.light .person:hover{border-color:var(--green-500);box-shadow:0 18px 44px rgba(16,30,60,.12)}
.section.light .person .nm{color:#101A2E}
.section.light .person p{color:#4C5870}
.section.light .person .ph,.section.light .person .av{box-shadow:0 8px 24px rgba(16,30,60,.14)}
@media (max-width:980px){.team-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.team-grid{grid-template-columns:1fr}}
.section.light .field input,.section.light .field textarea,.section.light .field select{background:#fff;border-color:#CDD6CE;color:#101A2E}
.contact-list{display:grid;gap:22px}
.contact-list .ci{border-left:2px solid var(--green-500);padding-left:18px}
.contact-list .ci .k{font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.16em;font-size:.72rem;color:var(--green-400)}
.contact-list .ci .v{font-size:1.08rem;color:#fff;margin-top:4px}
.section.light .contact-list .ci .v{color:#101A2E}

/* ----------------------------- footer ----------------------------- */
.site-footer{background:#070B14;border-top:1px solid var(--line);padding:64px 0 30px}
.foot-top a.foot-logo{display:inline-block;width:auto;background:#fff;padding:7px 9px;border-radius:6px;line-height:0;border:1px solid rgba(255,255,255,.7)}
.foot-top a.foot-logo:hover{color:inherit}
.foot-logo img{height:60px;width:auto;display:block}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-top h5{font-family:var(--f-eyebrow);text-transform:uppercase;letter-spacing:.18em;font-size:.76rem;color:#fff;margin-bottom:16px}
.foot-top a{display:block;color:#9DA9A1;font-size:.94rem;padding:5px 0;transition:.2s}
.foot-top a:hover{color:var(--green-400)}
.foot-brand p{color:#7D8A81;font-size:.92rem;max-width:34ch;margin-top:14px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);color:#6E7B72;font-size:.84rem}
.foot-bottom .legal{display:flex;gap:22px;flex-wrap:wrap}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ----------------------------- responsive ------------------------- */
@media (max-width:980px){
  .split{grid-template-columns:1fr}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .statbar .wrap{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat{border-bottom:1px solid rgba(255,255,255,.10)}
  .prow,.prow.rev .txt{grid-template-columns:1fr}
  .prow{grid-template-columns:1fr}
  .prow .img{order:-1;min-height:240px}
  .prow.rev .txt{order:0}
  .foot-top{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav{position:fixed;inset:0 0 0 auto;width:min(82vw,360px);background:#fff;
    flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:8px;
    padding:96px 32px 32px;transform:translateX(100%);transition:transform .3s ease;
    border-left:1px solid #E2E7EF;box-shadow:-12px 0 40px rgba(10,19,38,.12);z-index:55}
  .nav.open{transform:none}
  .nav a{font-size:1.05rem;padding:12px 0;width:100%;border-bottom:1px solid #EAEEF4;color:#1B2740}
  .nav .btn{margin-top:14px;color:#fff;width:100%;justify-content:center}
  .nav-toggle{display:flex}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  body{font-size:16px}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .prow ul.spec{grid-template-columns:1fr 1fr}
}