/* NEXWAVE DIGITAL SOLUTIONS main.css
   Mobile-first, Flexbox/Grid, system-ui, WCAG 2.1 AA
   Target: < 8KB uncompressed */

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#1a1a2e;background:#fafbfc;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit;color:inherit;border:none;background:none}
button{cursor:pointer}

/* Custom Properties */
:root{
  --c-primary:#0f4c81;
  --c-accent:#00b4d8;
  --c-accent-dark:#0096b7;
  --c-surface:#ffffff;
  --c-bg:#fafbfc;
  --c-text:#1a1a2e;
  --c-text-muted:#555e6e;
  --c-border:#e2e6ea;
  --c-success:#22c55e;
  --radius:0.5rem;
  --radius-lg:1rem;
  --shadow-sm:0 1px 3px rgba(0,0,0,.08);
  --shadow-md:0 4px 12px rgba(0,0,0,.1);
  --shadow-lg:0 8px 30px rgba(0,0,0,.12);
  --transition:200ms ease;
  --max-w:1140px;
  --gap:1.5rem;
}

/* Typography - fluid clamp() */
h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.15;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3.5vw,2.5rem);font-weight:700;line-height:1.2}
h3{font-size:clamp(1.125rem,2.5vw,1.5rem);font-weight:600;line-height:1.3}
p,.body-text{font-size:clamp(.9375rem,1.5vw,1.125rem);color:var(--c-text-muted)}
small,.small{font-size:.8125rem}

/* Layout Utilities */
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--gap)}
.section{padding:4rem 0;content-visibility:auto;contain-intrinsic-size:1px 700px}
.grid{display:grid;gap:var(--gap)}
.flex{display:flex;gap:var(--gap)}
.flex-col{flex-direction:column}
.flex-center{align-items:center;justify-content:center}
.flex-between{align-items:center;justify-content:space-between}
.text-center{text-align:center}

/* Skip Link (a11y) */
.skip-link{position:absolute;top:-100%;left:1rem;padding:.75rem 1.5rem;background:var(--c-primary);color:#fff;border-radius:0 0 var(--radius) var(--radius);z-index:9999;font-weight:600}
.skip-link:focus{top:0}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:110;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border);transition:box-shadow var(--transition),background var(--transition)}
.site-header.scrolled{box-shadow:0 10px 30px rgba(15,76,129,.12);background:rgba(255,255,255,.96)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:4.1rem;padding:.35rem var(--gap);max-width:var(--max-w);margin:0 auto;gap:.75rem}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:800;font-size:clamp(.72rem,1.4vw,.98rem);letter-spacing:.02em;color:var(--c-primary);max-width:16.5rem;line-height:1.2}
.logo svg{width:2rem;height:2rem}
.brand-logo-img{width:2.9rem;height:2.9rem;object-fit:contain;flex-shrink:0;filter:drop-shadow(0 4px 10px rgba(0,0,0,.12))}
.logo-wordmark{font-weight:900;font-size:clamp(.74rem,1.35vw,.98rem);line-height:1.06;letter-spacing:.01em}
.logo-header{animation:logo-heartbeat 2.1s ease-in-out infinite;transform-origin:center;filter:drop-shadow(0 0 0 rgba(15,76,129,0))}
.logo-header .brand-logo-img{width:3rem;height:3rem}
.logo-footer{gap:.4rem}
.logo-footer .brand-logo-img{width:2.2rem;height:2.2rem}
.logo-footer .logo-wordmark{font-size:.8rem;font-weight:800}

.nav-list{display:flex;gap:.25rem;align-items:center}
.nav-list a{display:inline-flex;align-items:center;padding:.5rem .82rem;border-radius:var(--radius);font-size:.9rem;font-weight:600;min-height:2.75rem;transition:background var(--transition),color var(--transition),transform var(--transition)}
.nav-list a:hover,.nav-list a:focus-visible{background:rgba(15,76,129,.06);color:var(--c-primary)}
.nav-list a[aria-current="page"]{color:var(--c-primary);font-weight:600}
.mobile-nav-dropdown-toggle{display:none}
.mobile-programs-accordion{display:none}

.nav-toggle{display:none;width:2.75rem;height:2.75rem;align-items:center;justify-content:center;border-radius:var(--radius);-webkit-tap-highlight-color:transparent}
.nav-toggle svg{width:1.5rem;height:1.5rem}
.nav-toggle:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

/* Mobile nav */
@media(max-width:767px){
  .nav-toggle{display:inline-flex}
  .site-header{
    background:
      radial-gradient(circle at 12% 30%, rgba(0,180,216,.17), transparent 34%),
      radial-gradient(circle at 86% 18%, rgba(15,76,129,.13), transparent 36%),
      linear-gradient(120deg, rgba(255,255,255,.95), rgba(235,247,255,.94));
  }
  .header-inner{min-height:4.8rem}
  .logo{max-width:13.4rem;font-size:.66rem}
  .logo-header .brand-logo-img{width:3.2rem;height:3.2rem}
  .logo-header .logo-wordmark{font-size:.78rem}
  .nav-list{position:fixed;inset:4.8rem 0 0;flex-direction:column;gap:.35rem;padding:1rem;background:linear-gradient(180deg,#ffffff 0%,#f6fbff 100%);transform:translateY(-120%);opacity:0;transition:transform 300ms ease,opacity 200ms ease;overflow-y:auto;border-top:1px solid var(--c-border)}
  .nav-list a{padding:.9rem 1rem;min-height:3rem;font-size:1rem;border-radius:var(--radius);width:100%;justify-content:flex-start}
  .mobile-nav-dropdown-toggle{
    display:flex;
    align-items:center;
    justify-content:space-between;
    width:100%;
    min-height:3rem;
    padding:.8rem 1rem;
    border-radius:var(--radius);
    border:1px solid var(--c-border);
    background:#fff;
    color:var(--c-primary);
    font-weight:800;
    margin:.2rem 0 .6rem;
  }
  .mobile-nav-dropdown-toggle svg{
    width:1rem;height:1rem;transition:transform var(--transition);
  }
  .mobile-nav-dropdown-toggle[aria-expanded="true"] svg{transform:rotate(180deg)}
  .nav-list.mobile-nav-collapsed{max-height:0;opacity:0;overflow:hidden;padding:0}
  .nav-list:not(.mobile-nav-collapsed){max-height:75vh;opacity:1}
  .mobile-hide-when-programs{display:none}
  .mobile-programs-accordion{display:block;width:100%}
  .mobile-programs-toggle{
    width:100%;
    min-height:3rem;
    padding:.9rem 1rem;
    border:1px solid #bcd7ea;
    border-radius:var(--radius);
    background:linear-gradient(180deg,#ffffff,#f3faff);
    color:var(--c-primary);
    font-weight:800;
    display:flex;
    align-items:center;
    justify-content:space-between;
  }
  .mobile-programs-toggle svg{width:1rem;height:1rem;transition:transform var(--transition)}
  .mobile-programs-toggle[aria-expanded="true"] svg{transform:rotate(180deg)}
  .mobile-programs-links{
    display:none;
    margin-top:.4rem;
    margin-bottom:.6rem;
    padding:.35rem;
    border-radius:var(--radius);
    border:1px solid #d4e5f2;
    background:#fff;
  }
  .mobile-programs-links.is-open{display:grid;gap:.2rem}
  .mobile-programs-links a{
    width:100%;
    min-height:2.75rem;
    padding:.7rem .85rem;
    border-radius:calc(var(--radius) - 2px);
    font-size:.95rem;
    font-weight:600;
    color:#0f406b;
  }
  .mobile-programs-links a:hover,
  .mobile-programs-links a:focus-visible{background:#eaf6ff}
  .nav-open .nav-list{transform:translateY(0);opacity:1}
  .nav-open body{overflow:hidden}
}

/* Hero */
.hero{position:relative;padding:5rem 0 4rem;overflow:hidden;background:linear-gradient(135deg,#0f4c81 0%,#00b4d8 100%);color:#fff}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1.5' fill='rgba(255,255,255,.08)'/%3E%3C/svg%3E");opacity:.6}
.hero-inner{position:relative;max-width:var(--max-w);margin:0 auto;padding:0 var(--gap);display:flex;flex-direction:column;gap:1.5rem}
.hero h1{color:#fff}
.hero p{color:rgba(255,255,255,.88);max-width:38rem;font-size:clamp(1rem,2vw,1.25rem)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:.5rem}
.hero-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.375rem .875rem;background:rgba(255,255,255,.15);border-radius:2rem;font-size:.8125rem;font-weight:500;backdrop-filter:blur(4px)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:600;font-size:.9375rem;min-height:2.875rem;min-width:2.875rem;transition:background var(--transition),transform 80ms ease,box-shadow var(--transition);-webkit-tap-highlight-color:transparent}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--c-accent-dark);box-shadow:var(--shadow-md)}
.btn-outline{border:2px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover,.btn-outline:focus-visible{background:rgba(255,255,255,.12);border-color:#fff}
.btn-dark{background:var(--c-primary);color:#fff}
.btn-dark:hover,.btn-dark:focus-visible{background:#0d3f6b;box-shadow:var(--shadow-md)}

/* Cards */
.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:2rem;transition:box-shadow var(--transition),transform var(--transition)}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card-icon{display:flex;align-items:center;justify-content:center;width:3rem;height:3rem;border-radius:var(--radius);background:rgba(0,180,216,.1);color:var(--c-accent);margin-bottom:1rem}
.card-icon svg{width:1.5rem;height:1.5rem}
.card h3{margin-bottom:.5rem}
.card p{font-size:.9375rem}

/* Service Grid */
.services-grid{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media(min-width:600px){.services-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.services-grid{grid-template-columns:repeat(3,1fr)}}

/* Stats Row */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);padding:3rem 0}
@media(min-width:600px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{text-align:center}
.stat-number{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;color:var(--c-primary);line-height:1}
.stat-label{font-size:.875rem;color:var(--c-text-muted);margin-top:.25rem}

/* Testimonials */
.testimonial{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:2rem;position:relative}
.testimonial::before{content:'\201C';position:absolute;top:.5rem;left:1rem;font-size:3rem;color:var(--c-accent);opacity:.3;line-height:1}
.testimonial blockquote{font-style:italic;color:var(--c-text-muted);margin-bottom:1rem;padding-left:.5rem}
.testimonial cite{display:flex;align-items:center;gap:.75rem;font-style:normal;font-weight:600;font-size:.9375rem}
.testimonial-grid{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media(min-width:700px){.testimonial-grid{grid-template-columns:repeat(2,1fr)}}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,var(--c-primary) 0%,#1a6fb5 100%);color:#fff;border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center}
.cta-banner h2{color:#fff;margin-bottom:.75rem}
.cta-banner p{color:rgba(255,255,255,.85);margin-bottom:1.5rem;max-width:32rem;margin-inline:auto}

/* About Page */
.about-grid{display:grid;gap:2.5rem;align-items:center}
@media(min-width:768px){.about-grid{grid-template-columns:1fr 1fr}}
.values-list{display:grid;gap:1rem;margin-top:1.5rem}
.value-item{display:flex;gap:1rem;align-items:flex-start}
.value-icon{flex-shrink:0;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;border-radius:var(--radius);background:rgba(0,180,216,.1);color:var(--c-accent)}

/* Portfolio */
.portfolio-grid{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media(min-width:600px){.portfolio-grid{grid-template-columns:repeat(2,1fr)}}
.portfolio-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--c-surface);border:1px solid var(--c-border);transition:box-shadow var(--transition),transform var(--transition)}
.portfolio-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.portfolio-thumb{height:12rem;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:2.5rem}
.portfolio-body{padding:1.5rem}
.portfolio-tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-top:.75rem}
.portfolio-tag{padding:.25rem .625rem;background:rgba(0,180,216,.1);color:var(--c-accent-dark);border-radius:2rem;font-size:.75rem;font-weight:600}

/* Contact Form */
.contact-grid{display:grid;gap:2.5rem}
@media(min-width:768px){.contact-grid{grid-template-columns:1fr 1fr}}
.form-group{display:flex;flex-direction:column;gap:.375rem;margin-bottom:1.25rem}
.form-group label{font-weight:600;font-size:.875rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:.75rem 1rem;border:1.5px solid var(--c-border);border-radius:var(--radius);background:var(--c-surface);font-size:1rem;min-height:2.875rem;transition:border-color var(--transition),box-shadow var(--transition)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(0,180,216,.15)}
.form-group textarea{min-height:8rem;resize:vertical}
.form-group .error-msg{color:#dc2626;font-size:.8125rem;display:none}
.form-group.has-error input,.form-group.has-error textarea{border-color:#dc2626}
.form-group.has-error .error-msg{display:block}
.form-status{padding:1rem;border-radius:var(--radius);font-weight:500;display:none;margin-top:1rem}
.form-status.success{display:block;background:#dcfce7;color:#166534}
.form-status.error{display:block;background:#fef2f2;color:#991b1b}

.contact-info{display:flex;flex-direction:column;gap:1.5rem}
.contact-item{display:flex;gap:1rem;align-items:flex-start}
.contact-item-icon{flex-shrink:0;width:2.75rem;height:2.75rem;display:flex;align-items:center;justify-content:center;border-radius:var(--radius);background:rgba(0,180,216,.1);color:var(--c-accent)}

/* Page Header (subpages) */
.page-header{padding:3rem 0 2rem;background:linear-gradient(135deg,#0f4c81 0%,#1a6fb5 100%);color:#fff}
.page-header h1{color:#fff;margin-bottom:.5rem}
.page-header p{color:rgba(255,255,255,.8);max-width:36rem}
.breadcrumb{display:flex;gap:.5rem;font-size:.875rem;color:rgba(255,255,255,.7);margin-bottom:1rem}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover,.breadcrumb a:focus-visible{text-decoration:underline}

/* Footer */
.site-footer{background:linear-gradient(180deg,#101d31 0%,#0d1728 100%);color:rgba(255,255,255,.85);padding:3.25rem 0 1.5rem}
.footer-grid{display:grid;gap:1.5rem;grid-template-columns:1fr;margin-bottom:2rem}
@media(min-width:600px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer-brand{max-width:20rem}
.footer-brand p{font-size:.9rem;margin-top:.75rem;color:rgba(255,255,255,.7)}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:.9rem}
.footer-col a{display:block;padding:.38rem 0;font-size:.9rem;color:rgba(255,255,255,.68);transition:color var(--transition),transform var(--transition)}
.footer-col a:hover,.footer-col a:focus-visible{color:var(--c-accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;font-size:.8125rem;color:rgba(255,255,255,.5)}
@media(max-width:767px){
  .footer-grid{gap:1.1rem}
  .footer-col a{min-height:2.75rem;display:flex;align-items:center}
  .footer-bottom{font-size:.8rem}
}

/* Scroll Animations */
.reveal{opacity:0;transform:translateY(1.5rem);transition:opacity 500ms ease,transform 500ms ease}
.reveal.visible{opacity:1;transform:none}

/* Focus Indicators */
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

/* Reduced Motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* Print */
@media print{
  .site-header,.site-footer,.nav-toggle,.btn,.cta-banner{display:none}
  body{color:#000;background:#fff}
  a{text-decoration:underline}
}

/* -- Floating WhatsApp CTA -------------------------------- */
.whatsapp-float{
  position:fixed;
  right:calc(1rem + env(safe-area-inset-right));
  bottom:calc(1rem + env(safe-area-inset-bottom));
  z-index:120;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.72rem .98rem;
  border-radius:999px;
  background:#25d366;
  color:#fff;
  font-weight:700;
  font-size:.84rem;
  box-shadow:0 8px 18px rgba(0,0,0,.2);
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition);
  animation:whatsapp-pulse 2.4s infinite;
}
.whatsapp-float:hover,
.whatsapp-float:focus-visible{
  background:#1ebe5d;
  transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(0,0,0,.22);
}
.whatsapp-float svg{
  width:1.25rem;
  height:1.25rem;
  flex-shrink:0;
}
.whatsapp-float-label{
  display:flex;
  flex-direction:column;
  line-height:1.05;
  white-space:nowrap;
}
.whatsapp-float-label strong{
  font-size:.84rem;
}
.whatsapp-float-label span{
  font-size:.74rem;
  opacity:.94;
}
@keyframes whatsapp-pulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.42),0 8px 18px rgba(0,0,0,.2)}
  70%{box-shadow:0 0 0 12px rgba(37,211,102,0),0 8px 18px rgba(0,0,0,.2)}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0),0 8px 18px rgba(0,0,0,.2)}
}
@media(max-width:640px){
  .whatsapp-float{
    right:calc(.6rem + env(safe-area-inset-right));
    bottom:calc(.65rem + env(safe-area-inset-bottom));
    padding:.58rem .72rem;
    max-width:90vw;
    border-radius:999px;
  }
  .whatsapp-float svg{width:1.1rem;height:1.1rem}
  .whatsapp-float-label strong{font-size:.76rem}
  .whatsapp-float-label span{font-size:.67rem}
}
@media(prefers-reduced-motion:reduce){
  .whatsapp-float{animation:none}
  .logo-header{animation:none}
}
@keyframes logo-heartbeat{
  0%{transform:scale(1);filter:drop-shadow(0 0 0 rgba(15,76,129,0))}
  8%{transform:scale(1.055);filter:drop-shadow(0 0 8px rgba(15,76,129,.18))}
  16%{transform:scale(1)}
  24%{transform:scale(1.05)}
  32%{transform:scale(1)}
  100%{transform:scale(1)}
}