:root{
  --blue:#143a59;
}

body{
  margin:0;
  font-family:"Segoe UI",sans-serif;
  background:#fff;
  color:#333;
}
/* NAV */
/* HEADER */
.header{
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999;
  background: #0b2c3d; /* scroll ke baad wala color */
  box-shadow: 0 6px 20px rgba(0,0,0,.15);
}

/* NAV CONTAINER */
.nav-container{
  max-width:1200px;
  margin:auto;
  padding:15px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

/* LOGO */
.logo{
  color:#fff;
  font-size:20px;
  font-weight:700;
}

/* NAV */
.nav-list{
  list-style:none;
  display:flex;
  gap:25px;
}
.nav-list li{
  position:relative;
}
.nav-list a{
  color:#fff;
  text-decoration:none;
  font-weight:600;
}

/* SUBMENU */
.submenu{
  position:absolute;
  top:120%;
  left:0;
  background:#fff;
  min-width:200px;
  border-radius:6px;
  box-shadow:0 10px 25px rgba(0,0,0,.2);
  opacity:0;
  visibility:hidden;
  transition:.3s;
}
.submenu a{
  color:#333;
  padding:10px 15px;
  display:block;
}
.dropdown:hover .submenu{
  opacity:1;
  visibility:visible;
}

/* MOBILE */
.menu-toggle{
  display:none;
  font-size:26px;
  color:#fff;
  cursor:pointer;
}

@media(max-width:768px){
  .menu-toggle{display:block;}
  .nav{
    position:absolute;
    top:100%;
    left:0;
    width:100%;
    background:#0b2c3d;
    display:none;
  }
  .nav.active{display:block;}
  .nav-list{
    flex-direction:column;
    text-align:center;
  }
  .submenu{
    position:static;
    opacity:1;
    visibility:visible;
    display:none;
    box-shadow:none;
  }
  .dropdown.active .submenu{
    display:block;
  }
}

/* HERO */
.hero{
  position:relative;
  height:70vh;
  overflow:hidden;
}

.hero-slider img{
  position:absolute;
  width:100%;
  height:100%;
  object-fit:cover;
  top:0;
  left:0;
  opacity:0;
  transition:opacity 1s ease-in-out;
}

.hero-slider img.active{
  opacity:1;
}

.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(20,58,89,.5); /* slightly transparent */
  z-index:1;
}

.hero-content{
  position:absolute;
  inset:0;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  color:#fff;
  padding:20px;
}


/* SECTION */
.section{
  padding:80px 8%;
}
.section h2{
  color:var(--blue);
  font-size:34px;
  margin-bottom:20px;
}
.section p{
  font-size:17px;
  line-height:1.8;
}

/* SPLIT */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:center;
}
.split img{
  width:100%;
  border-radius:20px;
  box-shadow:0 15px 40px rgba(0,0,0,.15);
}

/* CARDS */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:30px;
  margin-top:40px;
}
.card{
  background:#fff;
  padding:30px;
  border-radius:20px;
  box-shadow:0 15px 40px rgba(0,0,0,.1);
  transition:.4s;
}
.card:hover{
  transform:translateY(-12px);
}
.card h4{
  color:var(--blue);
}

/* STATS */
.stats{
  background:var(--blue);
  color:#fff;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  text-align:center;
}
.stats div{
  padding:40px;
}
.stats h3{
  font-size:38px;
}

/* ANIMATION */
.reveal{
  opacity:0;
  transform:translateY(40px);
  transition:1s;
}
.reveal.show{
  opacity:1;
  transform:none;
}

/* MOBILE */
@media(max-width:900px){
  .hero{grid-template-columns:1fr;height:60vh;}
  .split{grid-template-columns:1fr;}
  .hero-content h1{font-size:30px;}
}