/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root{
  --primary:#0078d4;
  --primary-dark:#005a9e;
  --accent:#00bcf2;
  --ink:#333;
  --muted:#666;
  --bg:#f8f9fa;
  --card:#fff;
}
html,body{height:100%;}
body{
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height:1.6; color:var(--ink); background:#fff;
  overflow-x:hidden;
}

/* Scroll progress bar */
#scrollProgress{
  position:fixed; top:0; left:0; height:4px; width:0%;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  z-index:2000;
}

/* Animations */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeInLeft{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:translateX(0)}}
@keyframes fadeInRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes rotateIn{from{opacity:0;transform:rotate(-180deg) scale(0)}to{opacity:1;transform:rotate(0) scale(1)}}
@keyframes glow {
  0% { box-shadow: 0 0 0 rgba(0,120,212,0); }
  50% { box-shadow: 0 10px 30px rgba(0,120,212,0.35); }
  100% { box-shadow: 0 0 0 rgba(0,120,212,0); }
}

.animate-on-scroll{opacity:0; transform:translateY(30px); transition:opacity .6s ease, transform .6s ease;}
.animate-on-scroll.animated{opacity:1; transform:translateY(0)}

/* Navbar */
.navbar{
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color:#fff; padding:1rem 2rem; position:fixed; width:100%; top:0; z-index:1000;
  box-shadow:0 2px 20px rgba(0,0,0,.1); animation:slideDown .5s ease;
}
.nav-content{max-width:1200px; margin:0 auto; display:flex; justify-content:space-between; align-items:center;}
.logo{font-size:1.5rem; font-weight:bold; color:#fff; text-decoration:none; animation:fadeInLeft .8s ease;}
.nav-links{display:flex; gap:2rem; align-items:center; animation:fadeInRight .8s ease;}
.nav-links a{color:#fff; text-decoration:none; position:relative; transition:.3s;}
.nav-links a::after{content:''; position:absolute; bottom:-5px; left:0; width:0; height:2px; background:#fff; transition:width .3s;}
.nav-links a:hover::after{width:100%;}
.nav-links a:hover{transform:translateY(-2px)}
.lang-switcher{display:flex; gap:.5rem;}
.lang-btn{
  background:rgba(255,255,255,.2); border:1px solid rgba(255,255,255,.3); color:#fff;
  padding:.3rem .8rem; border-radius:4px; cursor:pointer; transition:.3s;
}
.lang-btn:hover{background:rgba(255,255,255,.3); transform:translateY(-2px)}
.lang-btn.active{background:rgba(255,255,255,.4); box-shadow:0 2px 8px rgba(0,0,0,.2)}
.mobile-menu-btn{display:none; background:none; border:none; color:#fff; font-size:1.5rem; cursor:pointer}

/* Buttons */
.btn{
  display:inline-block; padding:.9rem 1.2rem; border-radius:10px; text-decoration:none; font-weight:600;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn-primary{
  background:#fff; color:var(--primary);
  box-shadow:0 8px 25px rgba(0,0,0,.15);
}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 12px 30px rgba(0,0,0,.2)}
.btn-outline{
  border:2px solid rgba(255,255,255,.7); color:#fff; background:transparent;
}
.btn-outline:hover{background:rgba(255,255,255,.15)}

/* Hero */
.hero{
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color:#fff; padding:8rem 2rem 6rem; text-align:center; margin-top:60px; position:relative; overflow:hidden;
}
.hero::before{
  content:''; position:absolute; inset:0;
  background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,106.7C1248,96,1344,96,1392,96L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom / cover;
  opacity:.3;
}
.hero-content{position:relative; z-index:1;}
.hero h1{font-size:3.5rem; margin-bottom:1rem; animation:fadeInUp 1s ease;}
.hero p{font-size:1.2rem; max-width:900px; margin:0 auto 1.5rem; opacity:.95; animation:fadeInUp 1s ease .15s backwards;}
.hero-ctas{display:flex; justify-content:center; gap:1rem; margin-top:.5rem}
.hero-badges{display:flex; justify-content:center; gap:2rem; flex-wrap:wrap; margin-top:2rem; animation:fadeInUp 1s ease .3s backwards;}
.badge{background:rgba(255,255,255,.15); backdrop-filter:blur(10px); padding:1rem 1.4rem; border-radius:50px; display:flex; align-items:center; gap:.5rem; transition:.3s;}
.badge:hover{transform:translateY(-5px); background:rgba(255,255,255,.25); box-shadow:0 10px 30px rgba(0,0,0,.2)}
.badge-icon{font-size:1.5rem; animation:float 3s ease-in-out infinite;}
.trusted{margin-top:2rem;}
.trusted-title{opacity:.9; margin-bottom:.7rem}
.trusted-logos{display:flex; justify-content:center; flex-wrap:wrap; gap:.5rem}
.logo-pill{
  background:rgba(255,255,255,.15); border:1px solid rgba(255,255,255,.25); color:#fff; padding:.35rem .7rem; border-radius:999px; font-size:.9rem;
}

/* Containers & headings */
.container{max-width:1200px; margin:0 auto; padding:5rem 2rem;}
.section-title{font-size:2.4rem; color:var(--primary); margin-bottom:1rem; text-align:center}
.section-subtitle{text-align:center; color:var(--muted); font-size:1.05rem; margin:0 auto 2.2rem; max-width:780px}

/* Cards & grids */
.tilt{transform-style:preserve-3d; will-change:transform;}
.services-grid, .projects-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(300px, 1fr)); gap:2rem; margin-bottom:3rem;
}
.service-card, .project-card{
  background:var(--card); padding:2rem; border-radius:15px; box-shadow:0 5px 20px rgba(0,0,0,.08);
  transition:transform .4s ease, box-shadow .4s ease; position:relative; overflow:hidden;
}
.service-card::before, .project-card::before{
  content:''; position:absolute; top:0; left:0; width:100%; height:4px; background:linear-gradient(90deg, var(--primary), var(--accent));
  transform:scaleX(0); transition:transform .4s ease;
}
.service-card:hover::before, .project-card:hover::before{transform:scaleX(1)}
.service-card:hover, .project-card:hover{transform:translateY(-10px); box-shadow:0 15px 40px rgba(0,0,0,.15)}
.service-icon{font-size:2.3rem; margin-bottom:.8rem; display:inline-block; transition:.4s;}
.service-card:hover .service-icon{transform:scale(1.15) rotate(5deg)}
.service-card h3{color:var(--primary); margin-bottom:.6rem; font-size:1.25rem}
.service-card p{color:var(--muted); line-height:1.8}

/* Expertise */
.expertise-section{background:linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%); padding:5rem 2rem;}
.expertise-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(230px, 1fr)); gap:1.5rem; max-width:1200px; margin:0 auto;
}
.expertise-card{
  background:#fff; padding:1.5rem; border-radius:12px; text-align:center; box-shadow:0 4px 15px rgba(0,0,0,.08); transition:.3s;
}
.expertise-card:hover{transform:translateY(-8px); box-shadow:0 8px 25px rgba(0,0,0,.15)}
.expertise-icon{font-size:2rem; margin-bottom:.6rem; display:inline-block; animation:rotateIn .8s ease;}
.expertise-card h4{color:var(--primary); margin-bottom:.3rem; font-size:1.05rem}
.expertise-card p{color:var(--muted); font-size:.95rem}

/* About */
.about-section{padding:5rem 2rem;}
.about-content{max-width:1200px; margin:0 auto; display:grid; grid-template-columns:1fr 1fr; gap:3rem; align-items:center;}
.about-text h2{color:var(--primary); margin-bottom:1.2rem; font-size:2.1rem;}
.about-text p{color:var(--muted); line-height:1.9; margin-bottom:1rem; font-size:1.05rem;}
.about-highlights{margin-top:1rem;}
.highlight-item{
  display:flex; align-items:center; gap:.7rem; margin-bottom:.8rem; padding:1rem; background:#f8f9fa; border-radius:8px; transition:.3s;
}
.highlight-item:hover{background:#e9ecef; transform:translateX(10px)}
.highlight-icon{font-size:1.4rem; color:var(--primary)}
.about-stats{display:grid; grid-template-columns:repeat(2, 1fr); gap:1rem;}
.stat-card{
  background:#fff; padding:1.5rem; border-radius:12px; text-align:center; box-shadow:0 4px 20px rgba(0,0,0,.08); transition:.3s; position:relative; overflow:hidden;
}
.stat-card::before{content:''; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg, var(--primary), var(--accent))}
.stat-number{font-size:2.4rem; color:var(--primary); font-weight:800;}
.stat-label{color:var(--muted); margin-top:.3rem; font-size:.95rem}

/* Values */
.values-section{
  background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color:#fff; padding:5rem 2rem; position:relative; overflow:hidden;
}
.values-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr)); gap:1.5rem; max-width:1200px; margin:3rem auto 0;
}
.value-card{
  background:rgba(255,255,255,.1); backdrop-filter:blur(10px); padding:1.6rem; border-radius:12px; border:1px solid rgba(255,255,255,.2); transition:.3s;
}
.value-card:hover{background:rgba(255,255,255,.15); transform:translateY(-5px)}
.value-icon{font-size:2rem; margin-bottom:.6rem;}
.value-card h4{font-size:1.2rem; margin-bottom:.5rem;}
.value-card p{color:rgba(255,255,255,.9)}

/* Projects */
.projects-section{padding:5rem 2rem; background:#f8f9fa;}
.project-card{padding:0; overflow:hidden}
.project-image{
  height:200px; background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  display:flex; align-items:center; justify-content:center; color:#fff; font-size:3rem; position:relative; overflow:hidden;
}
.project-image::before{
  content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%;
  background:radial-gradient(circle, rgba(255,255,255,.1) 0%, transparent 70%);
  animation:pulse 3s ease-in-out infinite;
}
.project-content{padding:1.6rem}
.project-content h3{color:var(--primary); margin-bottom:.5rem; font-size:1.2rem}
.project-content p{color:var(--muted); line-height:1.7}
.project-tags{display:flex; gap:.5rem; flex-wrap:wrap; margin-top:.8rem}
.tag{background:#e9ecef; color:var(--primary); padding:.25rem .6rem; border-radius:20px; font-size:.8rem; font-weight:600}

/* Testimonials */
.testimonials-section{padding:5rem 2rem;}
.testimonials-grid{
  max-width:1100px; margin:0 auto; display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:1.2rem;
}
.testimonial-card{
  background:#fff; border-radius:12px; padding:1.4rem; box-shadow:0 5px 20px rgba(0,0,0,.08);
  transition:.3s; position:relative;
}
.testimonial-card:hover{transform:translateY(-6px)}
.testimonial-quote{font-style:italic; color:#444}
.testimonial-author{margin-top:.8rem; font-weight:700; color:var(--primary)}
.testimonial-role{color:var(--muted); font-size:.9rem}

/* FAQ */
.faq-section{padding:5rem 2rem; background:#fafafa}
.faq-list{max-width:900px; margin:0 auto; display:grid; gap:.8rem}
.faq-item{
  background:#fff; border-radius:12px; border:1px solid #eee; overflow:hidden; transition:.3s; box-shadow:0 4px 14px rgba(0,0,0,.05);
}
.faq-q{
  padding:1rem 1.2rem; cursor:pointer; display:flex; justify-content:space-between; align-items:center; gap:1rem;
  font-weight:700; color:var(--primary);
}
.faq-a{padding:0 1.2rem 1rem; color:var(--muted); display:none;}
.faq-item.open .faq-a{display:block;}
.faq-item.open{border-color:rgba(0,120,212,.3); box-shadow:0 8px 20px rgba(0,120,212,.12)}

/* Contact */
.contact-section{
  background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color:#fff; padding:5rem 2rem; text-align:center; position:relative; overflow:hidden;
}
.contact-section::before{
  content:''; position:absolute; inset:0;
  background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,106.7C1248,96,1344,96,1392,96L1440,96L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z"></path></svg>') no-repeat top / cover;
}
.contact-info{max-width:900px; margin:0 auto; position:relative; z-index:1;}
.contact-title{font-size:2rem; margin-bottom:.7rem}
.contact-text{font-size:1.05rem; opacity:.95}
.contact-details{display:grid; grid-template-columns:repeat(auto-fit, minmax(250px, 1fr)); gap:1rem; margin-top:2rem}
.contact-item{
  background:rgba(255,255,255,.1); backdrop-filter:blur(10px); padding:1.2rem; border-radius:12px; border:1px solid rgba(255,255,255,.2); transition:.3s;
}
.contact-item:hover{background:rgba(255,255,255,.15); transform:translateY(-5px)}
.contact-item-icon{font-size:1.6rem; margin-bottom:.3rem}
.contact-item-label{font-size:.9rem; opacity:.85; margin-bottom:.2rem}
.contact-item-value{font-size:1.05rem; font-weight:600}

/* Footer */
footer{background:#003d66; color:#fff; padding:3rem 2rem;}
.footer-content{max-width:1200px; margin:0 auto; display:grid; grid-template-columns:repeat(auto-fit, minmax(250px, 1fr)); gap:2rem}
.footer-section h3{margin-bottom:1rem; font-size:1.1rem}
.footer-section p, .footer-section a{color:rgba(255,255,255,.85); text-decoration:none; line-height:2; display:block; transition:.3s}
.footer-section a:hover{color:#fff; transform:translateX(5px)}
.footer-bottom{text-align:center; margin-top:1.5rem; padding-top:1.5rem; border-top:1px solid rgba(255,255,255,.15); color:rgba(255,255,255,.7)}

/* Back to top */
#backToTop{
  position:fixed; right:18px; bottom:18px; width:42px; height:42px; border:none; border-radius:999px; background:var(--primary); color:#fff; cursor:pointer;
  display:none; align-items:center; justify-content:center; font-size:18px; z-index:1500; animation:glow 2.6s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 768px){
  .mobile-menu-btn{display:block}
  .nav-links{
    display:none; position:absolute; top:100%; left:0; right:0; background:var(--primary);
    flex-direction:column; padding:1rem; gap:1rem;
  }
  .nav-links.active{display:flex}
  .hero h1{font-size:2.2rem}
  .hero p{font-size:1.05rem}
  .about-content{grid-template-columns:1fr}
  .projects-grid, .services-grid{grid-template-columns:1fr}
  .hero-badges{flex-direction:column; align-items:center}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{animation:none !important; transition:none !important}
}