/* Base reset */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f7f7f7;
  --card:#ffffff;
  --text:#222;
  --primary:#0d47a1;
  --muted:#666;
}
[data-theme="dark"]{
  --bg:#0b1220;
  --card:#071022;
  --text:#e6eef8;
  --muted:#9fb3d6;
  --primary:#5fb0ff;
}
body{font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; background:var(--bg); color:var(--text); line-height:1.5}
.container{max-width:1100px;margin:0 auto;padding:20px}

/* Header */
.site-header{background:linear-gradient(90deg,var(--primary),#1976d2);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 8px rgba(0,0,0,0.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{font-size:1.2rem;font-weight:800;letter-spacing:0.5px}
.main-nav a{color:#fff;margin-left:18px;text-decoration:none;font-weight:600;transition:opacity .15s}
.main-nav a:hover{opacity:.85}
.controls{display:flex;align-items:center}
#theme-toggle{background:transparent;border:1px solid rgba(255,255,255,0.12);color:#fff;padding:6px 10px;border-radius:6px;cursor:pointer}

/* Hero */
.hero{padding:56px 0;color:#fff;text-align:center;background:linear-gradient(135deg,#1976d2 0%,#42a5f5 100%);margin-bottom:18px}
.hero h2{font-size:1.8rem;margin-bottom:8px;animation:fadeInUp .6s ease}

/* Cards & services */
.services, .overview, .strengths, .mission, .customers, .contact{background:var(--card);margin-top:18px;padding:20px;border-radius:10px;box-shadow:0 6px 18px rgba(12,20,30,0.04)}
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{padding:16px;border-radius:8px;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);transition:transform .22s, box-shadow .22s}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(2,12,40,0.08)}
.card h3{color:var(--primary);margin-bottom:8px}

/* Customers carousel */
.customers h2{text-align:center}
.carousel{display:flex;align-items:center;gap:12px;margin-top:16px}
.carousel-track-wrapper{overflow:hidden;flex:1}
.carousel-track{display:flex;gap:12px;transition:transform .5s ease}
.carousel-slide{min-width:300px;flex:0 0 300px;border-radius:8px;overflow:hidden;background:linear-gradient(180deg,rgba(0,0,0,0.03),transparent);display:flex;align-items:center;justify-content:center}
.carousel-slide img{width:100%;height:auto;display:block;object-fit:contain}

/* Buttons */
.carousel-btn{background:var(--card);border:1px solid rgba(0,0,0,0.06);padding:8px 12px;border-radius:8px;cursor:pointer;font-size:18px}
.carousel-btn:hover{transform:translateY(-2px)}

/* Footer */
.site-footer{margin-top:22px;padding:18px;text-align:center;color:var(--muted)}

/* Animations */
@keyframes fadeInUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Responsive */
@media (max-width:700px){
  .header-inner{flex-direction:column;gap:12px;align-items:flex-start}
  .carousel-slide{min-width:240px;flex:0 0 240px}
}