html, body {
  height: 100%;
  margin: 0;
  scroll-behavior: smooth;
}

main {
  flex:1;
}

body {
  display: flex;
  flex-direction: column;
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at top center, #222831, #121416);
  color: #f1f1f1;
  padding-top: 56px;
  min-height: 100vh;
  margin: 0;
}

.navbar {
  backdrop-filter: blur(12px);
  background-color: rgba(0, 0, 0, 0.7) !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.navbar-logo {
  width: 40px;
  height: auto;
  margin-right: 10px;
  vertical-align: middle;
  filter: drop-shadow(0 0 3px #0d6efd80);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.3rem;
  color: #e0e0e0;
  transition: color 1s ease;
  line-height: 1;
}

.navbar-brand:hover {
  color: #0d6efd;
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: #d0d0d0;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link:hover {
  color: #0d6efd;
  text-shadow: 0 0 5px #0d6efd88;
}

.hero {
  background: radial-gradient(circle at top center, #222831, #121416);
  color: #f1f1f1;
  padding: 120px 20px 140px;
  text-align: center;
  border-radius: 0 0 40px 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
}

.hero-logo {
  width: 140px;
  margin-bottom: 25px;
  filter: drop-shadow(0 0 12px #0d6efdaa);
  transition: transform 0.3s ease;
}

.hero-logo:hover {
  transform: scale(1.05);
}

h1, .section-title {
  font-size: 3.2rem;
  font-weight: 700;
  text-shadow: 1px 1px 8px #000000cc;
  margin-bottom: 16px;
}

p.lead {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 30px;
  color: #cccccc;
  text-shadow: 0 1px 3px #000000cc;
  line-height: 1.6;
}

.btn-lg {
  font-size: 1.2rem;
  padding: 14px 36px;
  border-radius: 30px;
  font-weight: 600;
  background-color: #0d6efd;
  color: white;
  box-shadow: 0 8px 20px rgba(13, 110, 253, 0.6);
  transition: all 0.3s ease;
}

.btn-lg:hover {
  background-color: #0b5ed7;
  box-shadow: 0 12px 28px rgba(11, 94, 215, 0.8);
  transform: translateY(-5px);
}

footer {
  background-color: #111;
  text-align: center;
  padding: 22px 0;
  font-size: 1rem;
  font-weight: 500;
  color: #999999;
  box-shadow: 0 -5px 12px rgba(0, 0, 0, 0.5);
}