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

body{
  background:#f6f7fb;
  color:#1f2933;
  overflow-x:hidden;
  text-align:center;
}

/* CANVAS */
#bg-neurons{
  position:fixed;
  inset:0;
  z-index:-1;
}

/* HEADER */
.header{
  padding:70px 20px 50px;
}

.logo-img{
  max-width:180px;
  margin-bottom:15px;
}

.subtitle{
  color:#6b7280;
}

/* PORTFOLIO */
.portfolio{
  max-width:1200px;
  margin:auto;
  padding:40px;
  display:grid;
  gap:30px;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
}

/* CARD */
.card{
  background:#fff;
  border-radius:22px;
  overflow:hidden;
  box-shadow:0 20px 40px rgba(0,0,0,.06);
  text-decoration:none;
  color:inherit;
  transform:translateY(40px);
  opacity:0;
  transition:.6s ease;
  position:relative;
}

.card.show{
  transform:translateY(0);
  opacity:1;
}

.card img{
  width:100%;
  display:block;
}

.card-content{
  padding:24px;
}

.card-content h3{
  margin-bottom:6px;
}

/* CARD HOVER ANIMATION */
.card::after{
  content:"";
  position:absolute;
  bottom:0;
  left:0;
  height:6px;
  width:0;
  transition:.4s ease;
}

.card:hover{
  transform:translateY(-8px) scale(1.02);
}

.card:hover::after{
  width:100%;
}

/* COLORS */
.c1::after{background:#3b82f6;}
.c2::after{background:#22c55e;}
.c3::after{background:#f59e0b;}
.c4::after{background:#ef4444;}
.c5::after{background:#8b5cf6;}
.c6::after{background:#14b8a6;}


.whatsapp-float {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 9999;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-float img {
    width: 35px;
    height: 35px;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 35px rgba(0,0,0,0.35);
}