* {
  margin: 0; padding: 0; box-sizing: border-box;
}
html, body {
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: white;
}
.background {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: url('../img/forest.jpg') no-repeat center center fixed;
  background-size: cover; filter: brightness(0.5); z-index: -1;
}
.navbar {
  position: fixed; top: 20px; left: 50%;
  transform: translateX(-50%);
  width: 90%; max-width: 680px;
  padding: 10px 20px;
  background-color: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 10;
}
.nav-list {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 24px;
}
.nav-list a {
  position: relative;
  color: white;
  text-decoration: none;
  font-size: 1rem;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.nav-list a:hover,
.nav-list a.active {
  color: #adadad;
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: #a7a7a7;
  transition: width 0.4s ease;
}
.nav-list a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.4);
  color: white;
  text-align: center;
  padding: 10px;
  font-size: 0.85rem;
  z-index: 1000;
}

body {
  padding-bottom: 50px;  
}