:root{
  --primary:#0b4b6f;
  --accent:#0fb2d0;
  --muted:#6b7280;
  --bg:#f7f9fb;
  --card:#ffffff;
  --radius:12px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:#0f172a;line-height:1.6}
a{text-decoration:none;color:var(--primary);transition: color 0.3s}
a:hover{color:var(--accent)}
.container{max-width:1200px;margin:0 auto;padding:20px;text-align:center}

/* Header */
header{background:#fff;border-bottom:1px solid #ddd;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,0.05);animation: slideDown 0.8s ease}
@keyframes slideDown{from{transform:translateY(-100%);}to{transform:translateY(0);}}

/* Navbar */
.navbar{display:flex;justify-content:space-between;align-items:center}
.navbar img{height:100px;transition: transform 0.3s}
.navbar img:hover{transform: scale(1.05)}
.navbar ul{list-style:none;display:flex;gap:20px;margin:0;padding:0}
.navbar li{font-weight:600}

/* Hero */
.hero{padding:80px 20px;text-align:center;background:linear-gradient(135deg,#0b4b6f,#0fb2d0);color:#fff;border-radius:12px;margin:20px;animation: fadeIn 1.2s ease}
.hero h1{margin-bottom:15px;font-size:42px;line-height:1.2;animation: growIn 1.5s ease}
.hero p{font-size:20px;color:#e0f7ff;max-width:800px;margin:0 auto}

@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes growIn{from{transform:scale(0.9);opacity:0;}to{transform:scale(1);opacity:1;}}

/* Sections */
section{padding:60px 20px}
h2{color:var(--primary);margin-bottom:30px;text-align:center;font-size:32px}
.card{background:var(--card);padding:25px;border-radius:var(--radius);box-shadow:0 8px 20px rgba(0,0,0,0.08);margin-bottom:20px;transition: transform 0.3s, box-shadow 0.3s;text-align:center}
.card:hover{transform: translateY(-8px);box-shadow:0 14px 32px rgba(0,0,0,0.15)}

/* Services grid */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.services-grid img{transition: transform 0.4s;border-radius:8px}
.services-grid img:hover{transform: scale(1.05)}

/* Footer */
footer{background:#071124;color:#fff;padding:40px 20px;margin-top:40px;border-top:4px solid var(--primary)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;text-align:center}
.footer-grid ul{list-style:none;padding:0}
.footer-grid li{margin-bottom:10px}
.footer-grid a{color:#fff;transition: color 0.3s}
.footer-grid a:hover{color:var(--accent)}

/* Contact form */
form{display:grid;gap:15px;text-align:left;max-width:600px;margin:0 auto}
input,textarea{padding:12px;border-radius:8px;border:1px solid #ccc;width:100%;font-size:16px;transition: border 0.3s, box-shadow 0.3s}
input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 8px rgba(15,178,208,0.3);outline:none}
button{background:var(--primary);color:#fff;padding:12px;font-size:16px;border:none;border-radius:8px;cursor:pointer;transition: transform 0.3s, background 0.3s, box-shadow 0.3s}
button:hover{background:var(--accent);transform: scale(1.05);box-shadow:0 6px 16px rgba(0,0,0,0.2)}
/* Reference logos carousel */
.references {
  overflow: hidden;
  white-space: nowrap;
  background: #0a1628;
  padding: 20px 0;
  margin-top: 20px;
  border-top: 2px solid var(--primary);
}
.references h4 {
  color: #fff;
  margin-bottom: 15px;
  text-align: center;
  font-size: 20px;
}
.logo-slider {
  display: inline-block;
  animation: scroll 25s linear infinite;
}
.logo-slider img {
  height: 60px;
  margin: 0 40px;
  vertical-align: middle;
  filter: grayscale(100%);
  opacity: 0.8;
  transition: filter 0.3s, opacity 0.3s;
}
.logo-slider img:hover {
  filter: grayscale(0%);
  opacity: 1;
}

@keyframes scroll {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}