*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial, sans-serif;
}

body{
  background:#0e1a2b;
  color:white;
}

header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  background:rgba(0,0,0,0.7);
  backdrop-filter:blur(10px);
  padding:10px 0;
  z-index:1000;
}

nav{
  width:90%;
  margin:auto;
  display:flex;
  justify-content:space-between;
  align-items:center;
}

nav img{
  height:55px;
}

nav ul{
  list-style:none;
  display:flex;
  gap:30px;
}



nav ul li a{
  display:inline-block;
  text-decoration:none;
  color:white;
  font-weight:bold;
  transition:0.3s;
  background:#00bfff;
  padding:12px 22px;
  border-radius:30px;
}

nav ul li a:hover{
  background:#0080ff;
  color:white;
}












/* HERO */
.hero{
  min-height:100vh;
  background:
    linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
    url("../img/hero-bg.png");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:120px 20px 60px;
}

.hero-content{
  width:100%;
  max-width:900px;
}

.hero h1{
  font-size:60px;
  margin-bottom:15px;
}

.hero p{
  font-size:20px;
  margin-bottom:25px;
}

.btn{
  display:inline-block;
  margin-bottom:35px;
  padding:12px 25px;
  background:#00bfff;
  color:white;
  text-decoration:none;
  border-radius:30px;
  transition:0.3s;
}

.btn:hover{
  background:#0080ff;
}

/* TRANSPORT CALCULATOR */
.transport-overlay{
  width:100%;
  max-width:520px;
  margin:0 auto;
  background:rgba(0,0,0,0.55);
  backdrop-filter:blur(8px);
  padding:35px;
  border-radius:20px;
  box-shadow:0 10px 30px rgba(0,0,0,0.35);
  text-align:left;
}

.transport-overlay h2{
  text-align:center;
  margin-bottom:25px;
  color:white;
}

.transport-form{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:15px;
}

.transport-form input{
  width:100%;
  padding:12px;
  border:none;
  border-radius:10px;
  font-size:15px;
  outline:none;
}

.transport-form button{
  grid-column:1 / 3;
  width:100%;
  padding:12px;
  background:#19b5ea;
  color:white;
  border:none;
  border-radius:10px;
  font-size:16px;
  cursor:pointer;
  transition:0.3s;
}

.transport-form button:hover{
  background:#0998ca;
}

#clearBtn{
  background:#444;
  color:white;
}

#clearBtn:hover{
  background:#666;
}

.calc-result{
  margin-top:20px;
  padding:18px;
  border-radius:12px;
  background:rgba(255,255,255,0.12);
  color:white;
  font-size:18px;
  line-height:1.7;
  display:none;
}

/* COMMON SECTION */
.section{
  padding:120px 10% 80px;
}

.section h2{
  text-align:center;
  margin-bottom:40px;
}

/* ACTIVITY CARDS */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:25px;
  align-items:stretch;
}

.card{
  background:#2c5aa4;
  padding:30px 25px;
  border-radius:15px;
  transition:0.3s;
  min-height:180px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}

.card h3{
  margin-bottom:15px;
  font-size:24px;
}

.card p{
  font-size:17px;
  line-height:1.6;
}

.card:hover{
  transform:translateY(-5px);
}

/* GALLERY */
.gallery{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
  margin-top:30px;
}

.gallery img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:12px;
  cursor:pointer;
  transition:transform 0.3s ease;
  display:block;
}

.gallery img:hover{
  transform:scale(1.04);
}

/* GALLERY POPUP */
#popup{
  display:none;
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.92);
  justify-content:center;
  align-items:center;
  z-index:5000;
}

#popup img{
  max-width:80%;
  max-height:80%;
  border-radius:12px;
  box-shadow:0 10px 35px rgba(0,0,0,0.5);
}

.close-btn{
  position:absolute;
  top:20px;
  right:30px;
  font-size:42px;
  color:white;
  cursor:pointer;
  z-index:5002;
}

.nav-btn{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:50px;
  color:white;
  cursor:pointer;
  user-select:none;
  padding:10px 16px;
  background:rgba(0,0,0,0.35);
  border-radius:10px;
  z-index:5002;
}

.prev-btn{
  left:30px;
}

.next-btn{
  right:30px;
}

.nav-btn:hover,
.close-btn:hover{
  opacity:0.8;
}

/* CONTACT FORM */
.contact-form{
  max-width:600px;
  margin:0 auto 30px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:15px;
  background: rgba(0,0,0,55);
  backdrop-filter: blur(8px);
}



.contact-form input,
.contact-form textarea,
.contact-form button{
  width:100%;
  padding:10px;
  border:none;
  border-radius:10px;
  font-size:15px;
}

.contact-form textarea{
  grid-column:1 / 3;
  min-height:140px;
  resize:vertical;
}

.contact-form button{
  grid-column:1 / 3;
  background:#00bfff;
  color:white;
  cursor:pointer;
  transition:0.3s;
}

.contact-form button:hover{
  background:#0080ff;
}

/* MAP */
.map-wrap{
  max-width:900px;
  margin:0 auto;
}

.map-wrap iframe{
  width:100%;
  height:420px;
  border:0;
  border-radius:12px;
  display:block;
}

/* FOOTER */
footer{
  text-align:center;
  padding:20px;
  background:#000;
}

/* RESPONSIVE */
@media (max-width: 900px){
  .gallery{
    grid-template-columns:repeat(2, 1fr);
  }
}

@media (max-width: 768px){
  .hero h1{
    font-size:38px;
  }

  .hero p{
    font-size:18px;
  }

  .transport-form{
    grid-template-columns:1fr;
  }

  .transport-form button{
    grid-column:1 / 2;
  }

  .contact-form{
    grid-template-columns:1fr;
  }

  .contact-form textarea,
  .contact-form button{
    grid-column:1 / 2;
  }
}

@media (max-width: 600px){
  .gallery{
    grid-template-columns:1fr;
  }

  .gallery img{
    height:200px;
  }

  #popup img{
    max-width:90%;
    max-height:75%;
  }

  .nav-btn{
    font-size:36px;
  }

  .close-btn{
    font-size:34px;
  }

  nav{
    flex-direction:column;
    gap:15px;
  }

  nav ul{
    flex-wrap:wrap;
    justify-content:center;
    gap:15px;
  }
}