/* ==========================================================================
   LUX Numeris — Design system
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=Inter:wght@400;500;600&display=swap');

:root{
  --navy-deep: #0B2436;
  --navy: #163B52;
  --blue: #4EB1DB;
  --blue-deep: #1F5C7A;
  --ink: #161B20;
  --paper: #FBFBFA;
  --paper-2: #F3F1EC;
  --red: #C6303A;
  --gray: #5C6670;
  --line: #E3E7E9;

  --serif: 'Newsreader', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1140px;
  --pad: clamp(20px, 4vw, 48px);
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin:0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: var(--blue-deep); text-decoration: none; }
a:hover{ text-decoration: underline; }

h1,h2,h3,h4{
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 0.5em;
  color: var(--navy-deep);
  letter-spacing: -0.01em;
}

h1{ font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 500; }
h2{ font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3{ font-size: 1.2rem; }

p{ margin: 0 0 1em; color: var(--ink); }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.eyebrow{
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue-deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--red);
  display: inline-block;
}

.lede{
  font-size: 1.15rem;
  color: var(--gray);
  max-width: 60ch;
}

/* Buttons */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 13px 26px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}
.btn:hover{ text-decoration: none; }
.btn-primary{
  background: var(--navy-deep);
  color: #fff;
}
.btn-primary:hover{ background: var(--blue-deep); }
.btn-ghost{
  background: transparent;
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}
.btn-ghost:hover{ background: rgba(255,255,255,0.1); }
.btn-line{
  background: transparent;
  border-color: var(--navy-deep);
  color: var(--navy-deep);
}
.btn-line:hover{ background: var(--navy-deep); color:#fff; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251,251,250,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px var(--pad);
  max-width: var(--container);
  margin: 0 auto;
}
.brand{ display:flex; align-items:center; }
.brand img{ height: 30px; width:auto; }

.nav-links{
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin:0; padding:0;
}
.nav-links a{
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active{
  color: var(--blue-deep);
  text-decoration: none;
  border-bottom-color: var(--blue);
}

.nav-right{ display:flex; align-items:center; gap:20px; }

.lang-toggle{
  display: flex;
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  font-size: 0.78rem;
  font-weight: 600;
}
.lang-toggle button{
  background: transparent;
  border: none;
  padding: 6px 11px;
  cursor: pointer;
  color: var(--gray);
  font-family: var(--sans);
}
.lang-toggle button.active{
  background: var(--navy-deep);
  color: #fff;
}

.nav-cta{
  padding: 9px 18px;
  font-size: 0.85rem;
}

.menu-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  padding: 6px;
}
.menu-toggle span{
  display:block;
  width:22px; height:2px;
  background: var(--ink);
  margin:5px 0;
}

/* ==========================================================================
   Hero with geometric mesh signature
   ========================================================================== */
.hero{
  position: relative;
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 62%, #1c4b66 100%);
  color: #fff;
  overflow: hidden;
  padding: 108px var(--pad) 96px;
}
.hero-mesh{
  position:absolute;
  inset:0;
  opacity: 0.35;
  pointer-events: none;
}
.hero-inner{
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
}
.hero h1{ color:#fff; max-width: 18ch; }
.hero .eyebrow{ color: var(--blue); }
.hero .eyebrow::before{ background: var(--red); }
.hero-lede{
  color: rgba(255,255,255,0.78);
  font-size: 1.12rem;
  max-width: 52ch;
  margin-bottom: 32px;
}
.hero-actions{ display:flex; gap: 16px; flex-wrap: wrap; }

.page-hero{
  position: relative;
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 100%);
  color:#fff;
  overflow:hidden;
  padding: 84px var(--pad) 68px;
}
.page-hero h1{ color:#fff; margin-bottom: 10px; }
.page-hero .eyebrow{ color: var(--blue); }
.page-hero .eyebrow::before{ background: var(--red); }
.page-hero p{ color: rgba(255,255,255,0.75); max-width: 60ch; }

/* ==========================================================================
   Sections
   ========================================================================== */
section{ padding: 84px var(--pad); }
.section-tight{ padding: 56px var(--pad); }
.container > section, .section-inner{ max-width: var(--container); margin:0 auto; }

.section-alt{ background: var(--paper-2); }
.section-navy{ background: var(--navy-deep); color:#fff; }
.section-navy h2{ color:#fff; }
.section-navy p{ color: rgba(255,255,255,0.75); }

.grid-2{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.grid-3{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.divider{
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

/* Service cards */
.service-card{
  background: #fff;
  border: 1px solid var(--line);
  padding: 34px 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.service-card:hover{
  border-color: var(--blue);
  transform: translateY(-3px);
}
.service-card .num{
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--blue);
  display:block;
  margin-bottom: 14px;
}
.service-card h3{ margin-bottom: 10px; }
.service-card p{ color: var(--gray); font-size: 0.96rem; margin:0; }

/* Values / stats */
.stat{
  border-left: 2px solid var(--blue);
  padding-left: 18px;
}
.stat .num{
  font-family: var(--serif);
  font-size: 2.6rem;
  color: var(--navy-deep);
  line-height: 1;
  display:block;
  margin-bottom: 6px;
}
.stat p{ color: var(--gray); margin:0; font-size: 0.92rem; }

/* Network / membership badges */
.badges{
  display:flex;
  gap: 40px;
  align-items:center;
  flex-wrap: wrap;
}
.badge{
  display:flex;
  align-items:center;
  gap: 12px;
  padding: 14px 20px;
  border: 1px solid var(--line);
  background:#fff;
}
.badge .dot{
  width: 8px; height:8px; border-radius:50%;
  background: var(--blue);
  flex-shrink:0;
}
.badge strong{ display:block; font-size: 0.92rem; color: var(--navy-deep); }
.badge span{ display:block; font-size: 0.78rem; color: var(--gray); }

/* Contact */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
}
.contact-info dt{
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-deep);
  font-weight: 600;
  margin-top: 26px;
}
.contact-info dt:first-child{ margin-top:0; }
.contact-info dd{
  margin: 6px 0 0;
  font-size: 1.02rem;
  color: var(--ink);
}

.form-group{ margin-bottom: 20px; }
.form-group label{
  display:block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--navy-deep);
}
.form-group input,
.form-group textarea{
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: var(--sans);
  font-size: 0.96rem;
  color: var(--ink);
}
.form-group input:focus,
.form-group textarea:focus{
  outline: none;
  border-color: var(--blue);
}
.form-note{
  font-size: 0.8rem;
  color: var(--gray);
  margin-top: 10px;
}

/* Footer */
.site-footer{
  background: var(--navy-deep);
  color: rgba(255,255,255,0.7);
  padding: 56px var(--pad) 28px;
}
.footer-grid{
  max-width: var(--container);
  margin: 0 auto;
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-grid img{ height: 24px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-grid h4{
  color:#fff;
  font-family: var(--sans);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom: 10px; }
.footer-grid a{ color: rgba(255,255,255,0.7); font-size: 0.92rem; }
.footer-grid a:hover{ color:#fff; }
.footer-bottom{
  max-width: var(--container);
  margin: 0 auto;
  padding-top: 22px;
  display:flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 860px){
  .nav-links{
    position: fixed;
    top: 64px; left:0; right:0;
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--pad) 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .nav-links.open{ transform: translateY(0); }
  .nav-links li{ width:100%; padding: 10px 0; border-bottom: 1px solid var(--line); }
  .nav-links a{ display:block; }
  .menu-toggle{ display:block; }
  .nav-cta{ display:none; }

  .grid-2, .grid-3{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; gap: 40px; }
  .footer-grid{ grid-template-columns: 1fr; gap: 28px; }
  .badges{ gap: 16px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ transition: none !important; }
}