/* General */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}
h1, h2, h3, h4 { color: #222; }
p { color: #555; }
a { text-decoration: none; color: inherit; }

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #111;
  padding: 10px 20px;
}
.logo { color: #fff; font-size: 1.5em; font-weight: bold; }
.nav-links { list-style: none; display: flex; gap: 20px; }
.nav-links li a { color: #fff; transition: 0.3s; }
.nav-links li a.active, .nav-links li a:hover { color: #00aced; }
.menu-toggle { display: none; font-size: 24px; color: #fff; cursor: pointer; }

/* Hero */
.hero {
  background: linear-gradient(to right, #0077b6, #00b4d8);
  color: #fff; text-align: center;
  padding: 100px 20px;
}
.btn {
  background: #fff; color: #0077b6;
  padding: 10px 20px; border-radius: 5px;
  font-weight: bold; display: inline-block; margin-top: 20px;
  transition: 0.3s;
}
.btn:hover { background: #00b4d8; color: #fff; }

/* Grid */
.grid {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  padding: 20px;
}
.card {
  background: #f9f9f9; padding: 20px;
  border-radius: 8px; text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}
.card:hover { transform: translateY(-5px); }

/* Testimonials */
.testimonials { padding: 40px; background: #f1f1f1; text-align: center; }
.slider .slide { display: none; }
.slider .slide.active { display: block; font-style: italic; }

/* Projects */
.projects { padding: 40px; }
.filters { text-align: center; margin-bottom: 20px; }
.filter-btn {
  background: #0077b6; color: #fff; border: none;
  padding: 8px 15px; margin: 5px; border-radius: 5px;
  cursor: pointer; transition: 0.3s;
}
.filter-btn.active, .filter-btn:hover { background: #00b4d8; }

.project-card img {
  width: 100%; border-radius: 8px;
}

/* Lightbox */
.lightbox {
  display: none; position: fixed; top:0; left:0; width:100%; height:100%;
  background: rgba(0,0,0,0.8); justify-content:center; align-items:center;
  flex-direction:column; z-index:1000;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 90%; max-height: 80%; border-radius: 8px; }
#lightboxClose {
  position:absolute; top:20px; right:30px;
  font-size: 2rem; color:#fff; cursor:pointer;
}

/* Contact */
.contact { padding: 40px; max-width: 600px; margin: auto; }
form { display: flex; flex-direction: column; }
label { margin-top: 10px; }
input, textarea {
  padding: 10px; margin-top: 5px; border: 1px solid #ccc; border-radius: 5px;
}
button.btn { margin-top: 15px; }

/* Footer */
footer {
  text-align: center; padding: 20px;
  background: #111; color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; }
  .nav-links.active { display: flex; background:#111; position:absolute; top:50px; right:0; padding:20px; }
  .menu-toggle { display: block; }
}