/* ============================================
   PORTFIL ENGINEERING SERVICES — SHARED STYLES
   ============================================ */

:root{
  --teal-900:#0a3338;
  --teal-800:#0e4a52;
  --teal-700:#1a6670;
  --teal:#1d7a85;
  --teal-soft:#2a8893;
  --orange:#f06723;
  --orange-deep:#d8541a;
  --bone:#f4efe6;
  --bone-2:#ebe4d6;
  --ink:#0c1416;
  --ink-soft:#1c2a2d;
  --muted:#5a6b6e;
  --line:rgba(10,51,56,.18);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter Tight',sans-serif;
  background:var(--bone);
  color:var(--ink);
  line-height:1.55;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  display:flex;flex-direction:column;
}
::selection{background:var(--orange);color:var(--bone)}

/* ===== NAV ===== */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(244,239,230,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1400px;margin:0 auto;
  padding:.9rem 2rem;
  display:flex;justify-content:space-between;align-items:center;
  gap:2rem;
}
.nav-logo{
  display:inline-flex;align-items:center;
  text-decoration:none;
  flex-shrink:0;
}
.nav-logo img{
  height:48px;width:auto;display:block;
}
.nav-links{display:flex;gap:2.2rem;list-style:none;align-items:center}
.nav-links a{
  text-decoration:none;color:var(--ink-soft);
  font-size:.78rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  position:relative;padding:.5rem 0;
  transition:color .25s;
}
.nav-links a:hover{color:var(--orange)}
.nav-links a.active{color:var(--teal-900)}
.nav-links a::after{
  content:'';position:absolute;bottom:0;left:0;
  width:0;height:2px;background:var(--orange);
  transition:width .3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after{width:100%}
.nav-cta{
  background:var(--teal-900);color:var(--bone) !important;
  padding:.7rem 1.3rem;border-radius:999px;
  text-decoration:none;font-size:.72rem;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;
  transition:all .25s;
  border:1px solid var(--teal-900);
}
.nav-cta:hover{background:var(--orange);border-color:var(--orange);color:var(--bone) !important}
.nav-cta::after{display:none !important}

/* Mobile menu */
.menu-toggle{
  display:none;background:none;border:none;cursor:pointer;
  color:var(--teal-900);padding:.5rem;
}
.menu-toggle svg{width:26px;height:26px}

/* ===== PAGE HEADER (for inner pages) ===== */
.page-header{
  padding:9rem 2rem 5rem;
  background:
    radial-gradient(ellipse at top right, rgba(29,122,133,.18), transparent 55%),
    radial-gradient(ellipse at bottom left, rgba(240,103,35,.08), transparent 50%),
    var(--bone);
  position:relative;overflow:hidden;
}
.page-header::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(10,51,56,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(10,51,56,.04) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);
  pointer-events:none;
}
.page-header-inner{
  max-width:1400px;margin:0 auto;
  position:relative;z-index:2;
}
.page-eyebrow{
  display:inline-flex;align-items:center;gap:.7rem;
  font-family:'JetBrains Mono',monospace;
  font-size:.72rem;letter-spacing:.25em;text-transform:uppercase;
  color:var(--teal);margin-bottom:1.4rem;
}
.page-eyebrow .dot{width:8px;height:8px;background:var(--orange);border-radius:50%}
.page-eyebrow .line{width:40px;height:1px;background:var(--teal)}
.page-title{
  font-family:'Fraunces',serif;
  font-size:clamp(2.6rem,6vw,5rem);
  line-height:.98;font-weight:500;
  letter-spacing:-.025em;color:var(--teal-900);
  max-width:900px;
}
.page-title em{font-style:italic;color:var(--orange);font-weight:400}
.page-lede{
  font-size:1.15rem;max-width:680px;color:var(--ink-soft);
  margin-top:1.8rem;line-height:1.55;
}

/* ===== MAIN ===== */
main{flex:1}
section{padding:6rem 2rem;position:relative}
.section-inner{max-width:1400px;margin:0 auto}
.section-head{margin-bottom:3.5rem;max-width:780px}
.section-tag{
  font-family:'JetBrains Mono',monospace;
  font-size:.72rem;letter-spacing:.25em;text-transform:uppercase;
  color:var(--orange);margin-bottom:1rem;
  display:flex;align-items:center;gap:.7rem;
}
.section-tag::before{
  content:'';width:24px;height:1px;background:var(--orange);
}
.section-title{
  font-family:'Fraunces',serif;
  font-size:clamp(2rem,4vw,3.4rem);
  font-weight:500;line-height:1.05;
  letter-spacing:-.02em;color:var(--teal-900);
}
.section-title em{font-style:italic;color:var(--orange);font-weight:400}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;gap:.7rem;
  padding:1rem 1.7rem;border-radius:999px;
  text-decoration:none;font-weight:600;font-size:.85rem;
  letter-spacing:.05em;transition:all .3s;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--teal-900);color:var(--bone)}
.btn-primary:hover{background:var(--orange);transform:translateY(-2px);box-shadow:0 12px 30px -10px rgba(240,103,35,.6)}
.btn-ghost{background:transparent;color:var(--teal-900);border-color:var(--teal-900)}
.btn-ghost:hover{background:var(--teal-900);color:var(--bone)}
.btn .arrow{transition:transform .3s}
.btn:hover .arrow{transform:translateX(4px)}

/* ===== FOOTER ===== */
footer{
  background:var(--ink);color:rgba(244,239,230,.6);
  padding:3.5rem 2rem 2rem;margin-top:auto;
}
.footer-inner{
  max-width:1400px;margin:0 auto;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:3rem;
  padding-bottom:2.5rem;border-bottom:1px solid rgba(244,239,230,.1);
}
.footer-col h5{
  font-family:'JetBrains Mono',monospace;
  font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--orange);margin-bottom:1.2rem;
}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:.6rem}
.footer-col a{
  color:rgba(244,239,230,.65);text-decoration:none;
  font-size:.88rem;transition:color .2s;
}
.footer-col a:hover{color:var(--orange)}
.footer-brand img{
  height:50px;margin-bottom:1rem;
  filter:brightness(1.1) contrast(1.05);
}
.footer-brand p{font-size:.88rem;line-height:1.6;color:rgba(244,239,230,.5);max-width:300px}
.footer-bottom{
  max-width:1400px;margin:0 auto;
  padding-top:2rem;
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:1rem;
}
.footer-bottom p{font-size:.78rem;font-family:'JetBrains Mono',monospace;letter-spacing:.05em}
.footer-tag{
  font-family:'Fraunces',serif;font-style:italic;
  color:var(--orange);font-size:1rem;
}

/* ===== REVEAL ANIM ===== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:translateY(0)}

/* ===== MOBILE ===== */
@media (max-width:960px){
  .nav-links{
    position:fixed;top:74px;left:0;right:0;
    background:var(--bone);
    flex-direction:column;
    padding:2rem;
    gap:1.5rem;
    align-items:flex-start;
    transform:translateY(-150%);
    transition:transform .4s ease;
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px -20px rgba(10,51,56,.2);
  }
  .nav-links.open{transform:translateY(0)}
  .menu-toggle{display:flex}
  .nav-cta{display:none}
  .footer-inner{grid-template-columns:1fr 1fr;gap:2rem}
}
@media (max-width:640px){
  section, .page-header{padding:4rem 1.5rem}
  .page-header{padding-top:7rem}
  .footer-inner{grid-template-columns:1fr;gap:2rem}
  .footer-bottom{flex-direction:column;text-align:center}
  .nav-logo img{height:40px}
}