:root {
  background-color:#F0FFFF ;
  --text-color: #111;
  --card-bg: #fff;
  --accent-color: #4CAF50;
  --btn-bg: #111;
  --btn-color: #fff;
  --nav-bg: #FFF8DC;
}

body.dark {
  background-color: #2B3856;
  --text-color: #f0f0f0;
  --card-bg: #1e1e1e;
  --accent-color: #90ee90;
  --btn-bg: #f0f0f0;
  --btn-color: #121212;
  --nav-bg: #1a1a1a;
}

body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: 0.3s ease;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--nav-bg);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}


.nav-links li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
}

.toggle-mode {
  padding: 6px 10px;
  background: var(--btn-bg);
  color: var(--btn-color);
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.bar {
  height: 3px;
  width: 25px;
  background-color: var(--text-color);
  border-radius: 2px;
}

/* Responsive Menu */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 70px;
    right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    width: 200px;
    display: none;
    padding: 1rem;
    border-radius: 0 0 0 10px;
  }

  .nav-links.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }
}

/* Header */
.header {
  text-align: center;
  padding: 2rem;
}

.profile-img {
  width: 140px;
  height: 140px;
  border-radius: 80%;
  object-fit: cover;
  border: none;
  margin-bottom: 1rem;
}

section {
  padding: 2rem;
  max-width: 900px;
  margin: auto;
  text-align: center;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.project-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s;
}

.project-card:hover {
  transform: translateY(-5px);
}

a {
  color: var(--accent-color);
  text-decoration: none;
}
footer {
  background: var(--card-bg);
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
  border-top: 1px solid #ccc;
}