:root {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --link-color: #82aaff;
  --link-hover: #c3f0ff;
  --card-bg: #1e1e1e;
  --shadow: rgba(0, 0, 0, 0.5);
  --hover-bg: #333;
  --hover-color: #fff;
  --active-bg: #82aaff;
  --active-color: #121212;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  animation: fadeIn 1.2s ease-in-out;
  transition: background-color 0.3s ease, color 0.3s ease;
}

@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  background-color: var(--bg-color);
  padding: 15px;
  flex-wrap: wrap;
}

nav a {
  color: var(--link-color);
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  padding: 10px 15px;
  border-radius: 10px;
  transition: background-color 0.3s, color 0.3s;
}

nav a:hover {
  background-color: var(--hover-bg);
  color: var(--hover-color);
}

nav a.active {
  background-color: var(--active-bg);
  color: var(--active-color);
}

.toggle-theme {
  position: absolute;
  right: 20px;
  top: 12px;
  padding: 6px 12px;
  border: 2px solid var(--link-color);
  background: none;
  color: var(--link-color);
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-theme:hover {
  background-color: var(--link-color);
  color: #000;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
  background-color: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 0 10px var(--shadow);
}

h1, h2 {
  color: var(--text-color);
}

p {
  color: var(--text-color);
  line-height: 1.8;
}

.profile-pic img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--link-color);
}

.links a {
  display: inline-block;
  margin: 10px 15px 0 0;
  color: var(--link-color);
  text-decoration: none;
}

.links a:hover {
  color: var(--link-hover);
}

/* Responsive Navbar for Mobile */
@media (max-width: 600px) {
  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  nav a {
    font-size: 14px;
    padding: 6px 10px;
    margin: 2px;
  }

  .toggle-theme {
    font-size: 13px;
    padding: 5px 8px;
    margin-top: 8px;
    position: relative;
    right: auto;
    top: auto;
  }
}