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

/* HEADER */
.header {
  position: sticky;
  top: 0;
  background: #0f172a;
  color: white;
  padding: 15px 0;
  z-index: 1000;
  animation: slideDown 0.6s ease;
}

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

.logo {
  font-size: 22px;
  font-weight: bold;
  color: #38bdf8;
}

/* NAV */
.nav {
  display: flex;
  gap: 20px;
}

.nav a {
  color: white;
  text-decoration: none;
  transition: 0.3s;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0%;
  height: 2px;
  background: #38bdf8;
  transition: 0.3s;
}

.nav a:hover {
  color: #38bdf8;
}

.nav a:hover::after {
  width: 100%;
}

/* MOBILE MENU */
.menu-btn {
  display: none;
  font-size: 28px;
  cursor: pointer;
}

/* HERO */
.hero {
  height: 60vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
  color: white;
  text-align: center;
  animation: fadeIn 1s ease;
}

/* FOOTER */
.footer {
  background: #0f172a;
  color: white;
  padding: 40px 0 10px;
}

.footer-container {
  width: 90%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-box {
  flex: 1;
  min-width: 200px;
}

.footer-box h3 {
  margin-bottom: 10px;
  color: #38bdf8;
}

.footer-box a {
  display: block;
  color: #ccc;
  text-decoration: none;
  margin: 5px 0;
  transition: 0.3s;
}

.footer-box a:hover {
  color: #38bdf8;
  transform: translateX(5px);
}

.footer-bottom {
  text-align: center;
  margin-top: 20px;
  padding-top: 10px;
  border-top: 1px solid #334155;
  font-size: 14px;
  color: #94a3b8;
}

/* ANIMATION */
@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {

  .nav {
    position: absolute;
    top: 60px;
    right: 0;
    background: #0f172a;
    flex-direction: column;
    width: 200px;
    display: none;
    padding: 20px;
  }

  .nav.active {
    display: flex;
    animation: fadeIn 0.4s ease;
  }

  .menu-btn {
    display: block;
    color: white;
  }
}