/* ==========================================================================
   Kestrel Strategic Systems — Shared Stylesheet
   Aerospace / defense-industrial visual system: navy/graphite, restrained
   blue accent, high-contrast type, generous whitespace.
   ========================================================================== */

:root{
  --bg:#07111b;
  --panel:#0d1b29;
  --panel2:#101f30;
  --line:#22364c;
  --txt:#f4f7fa;
  --muted:#aebdcb;
  --muted2:#8fa2b5;
  --steel:#b7d1df;
  --blue:#72acd0;
  --blue-dim:#4a7c9c;
  --amber:#d3a25c;
  --max:1180px;
  --radius:12px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:auto;padding:0 24px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--panel);color:var(--txt);padding:12px 18px;border-radius:8px;z-index:100}
.skip-link:focus{left:16px;top:16px}

/* ---------- Nav ---------- */
nav.site-nav{position:sticky;top:0;z-index:30;background:rgba(7,17,27,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.04em;font-size:14px;white-space:nowrap}
.brand img{height:30px;width:30px}
.nav-links{display:flex;gap:22px;color:var(--muted);font-size:14px;align-items:center}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--txt)}
.nav-actions{display:flex;align-items:center;gap:14px}
a.cta-mobile-only{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border:1px solid #8fbfd8;border-radius:8px;font-weight:700;font-size:14px;cursor:pointer;background:transparent;color:var(--txt);transition:opacity .15s ease}
.btn:hover{opacity:.85}
.btn.primary{background:#dbeaf1;color:#07111b;border-color:#dbeaf1}
.btn.block{width:100%}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:var(--txt);padding:8px 10px;font-size:20px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{min-height:560px;display:grid;align-items:center;border-bottom:1px solid var(--line);position:relative;overflow:hidden;background:radial-gradient(circle at 75% 25%,rgba(70,135,176,.18),transparent 33%),linear-gradient(120deg,#07111b 0%,#091523 55%,#07111b 100%);padding:70px 0}
.hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(100,150,185,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(100,150,185,.04) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to right,transparent,black);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;position:relative;z-index:2}
.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.18em;color:var(--blue);font-weight:800}
h1{font-size:clamp(38px,5.4vw,66px);line-height:1.04;letter-spacing:-.04em;margin:16px 0 20px}
.lead{color:var(--muted);font-size:19px;max-width:720px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero-art{min-height:420px;background:url('../images/hero-art.png') center/cover no-repeat;border:1px solid rgba(130,178,207,.18);border-radius:18px;box-shadow:0 25px 80px rgba(0,0,0,.35);position:relative;overflow:hidden}
.hero-art:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,17,27,.25),transparent 30%),linear-gradient(0deg,rgba(7,17,27,.4),transparent 50%)}
.page-hero{min-height:0;padding:64px 0 48px}
.page-hero h1{font-size:clamp(32px,4.6vw,52px)}

/* ---------- Strip ---------- */
.strip{border-bottom:1px solid var(--line);background:#0a1724}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-grid div{padding:20px;border-right:1px solid var(--line)}
.strip-grid div:last-child{border-right:0}
.strip b{display:block;font-size:14px}
.strip span{color:var(--muted);font-size:12px}

/* ---------- Sections ---------- */
section{padding:76px 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:0}
h2{font-size:clamp(28px,3.6vw,42px);letter-spacing:-.03em;margin:10px 0 16px}
h3{font-size:19px;margin:0 0 9px}
.intro{max-width:780px;color:var(--muted);font-size:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:38px}
.card{background:linear-gradient(145deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.card .n{font-size:11px;color:var(--blue);letter-spacing:.17em;font-weight:800;margin-bottom:20px}
.card p{margin:0;color:var(--muted)}
.card ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
.card ul li{margin-bottom:6px}

.twocol{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start}
.services{display:grid;gap:12px;margin-top:28px}
.service{border-left:2px solid var(--blue);padding:16px 18px;background:rgba(114,172,208,.06);border-radius:0 8px 8px 0}
.service b{display:block;margin-bottom:3px}
.service span{color:var(--muted);font-size:14px}
.tagset{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}
.tag{border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:var(--muted);font-size:12px;background:#0a1724}

.callout{background:linear-gradient(120deg,rgba(114,172,208,.10),rgba(10,23,36,.5));border:1px solid var(--line);border-radius:16px;padding:34px}
.callout h3{font-size:25px;margin:0 0 12px}
.callout p{color:var(--muted);margin:0 0 12px}
.callout p:last-child{margin-bottom:0}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:38px}
.step{padding-top:17px;border-top:1px solid var(--line)}
.step b{display:block;margin-bottom:7px}
.step span{color:var(--muted);font-size:14px}

.notice{font-size:13px;color:#8fa2b5;margin-top:26px;border:1px solid var(--line);padding:16px 18px;border-radius:9px;background:#091522;line-height:1.55}
.notice.strong{border-color:var(--blue-dim);background:rgba(114,172,208,.08)}
.notice strong{color:var(--steel)}

.cta{display:grid;grid-template-columns:1.3fr .7fr;gap:30px;align-items:center}

table.placeholders{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}
table.placeholders th,table.placeholders td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
table.placeholders th{color:var(--blue);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
table.placeholders td.status{color:var(--muted2);font-style:italic}
table.placeholders tr:last-child td{border-bottom:0}

.breadcrumb{font-size:13px;color:var(--muted2);margin-bottom:6px}
.breadcrumb a:hover{color:var(--blue)}

/* ---------- Footer ---------- */
footer{padding:40px 0;color:#8fa2b5;font-size:13px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:20px}
.foot h4{color:var(--muted);font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
.foot-links{display:flex;flex-direction:column;gap:9px}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.foot-brand{display:flex;align-items:center;gap:10px;color:var(--muted);margin-bottom:10px}
.foot-brand img{height:24px;width:24px}

/* ---------- Forms (RFQ) ---------- */
form.rfq{display:grid;gap:22px}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:var(--panel)}
fieldset legend{padding:0 8px;color:var(--blue);font-size:13px;letter-spacing:.08em;text-transform:uppercase;font-weight:800}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:14px}
.form-row.single{grid-template-columns:1fr}
.form-row.three{grid-template-columns:1fr 1fr 1fr}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--muted);font-weight:600}
.field .hint{font-size:12px;color:var(--muted2);font-weight:400}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],select,textarea{
  background:#0a1724;border:1px solid var(--line);border-radius:8px;color:var(--txt);padding:11px 12px;font:inherit;font-size:14px;width:100%;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
textarea{resize:vertical;min-height:96px}
.radio-group,.checkbox-group{display:flex;gap:18px;flex-wrap:wrap;margin-top:4px}
.radio-group label,.checkbox-group label{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--txt);font-weight:400}
.file-drop{border:1.5px dashed var(--line);border-radius:8px;padding:18px;text-align:center;color:var(--muted2);font-size:13px;background:#0a1724}
.form-msg{border-radius:8px;padding:16px 18px;font-size:14px;display:none;margin-top:10px}
.form-msg.show{display:block}
.form-msg.info{background:rgba(114,172,208,.1);border:1px solid var(--blue-dim);color:var(--steel)}
.form-msg.error{background:rgba(211,90,90,.1);border:1px solid #a15050;color:#e3b3b3}
.required-star{color:var(--amber)}
.hp-field{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- 404 ---------- */
.error-page{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:80px 0}
.error-page .code{font-size:clamp(60px,10vw,120px);font-weight:800;color:var(--blue);letter-spacing:-.04em;line-height:1}

/* ---------- Utility ---------- */
.center{text-align:center}
.mt-0{margin-top:0}
.small{font-size:13px;color:var(--muted2)}
.list-plain{padding-left:18px;color:var(--muted)}
.list-plain li{margin-bottom:8px}

@media(max-width:880px){
  .nav-links{position:fixed;top:70px;left:0;right:0;background:#07111b;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:18px 24px;gap:16px;display:none}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .nav-actions{display:none}
  a.cta-mobile-only{display:inline-flex;margin-top:6px}
  .hero-grid,.twocol,.cta{grid-template-columns:1fr}
  .hero{padding:50px 0}
  .hero-art{min-height:280px;order:-1}
  .grid3,.grid2,.steps,.strip-grid,.foot{grid-template-columns:1fr}
  .strip-grid div{border-right:0;border-bottom:1px solid var(--line)}
  .form-row,.form-row.three{grid-template-columns:1fr}
  section{padding:56px 0}
  .foot{gap:24px}
}