/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; }

body { background: #f4f4f4; color: #333; transition: all 0.3s; }

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

.nav-links { display: flex; list-style: none; }
.nav-links li { margin-left: 20px; }
.nav-links a { text-decoration: none; color: #333; transition: 0.3s; }
.nav-links a:hover { color: #0078ff; }
#toggle-dark { cursor: pointer; background: none; border: none; font-size: 1.2rem; }

/* Hero */
.hero { height: 80vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; background: linear-gradient(120deg,#0078ff,#00c6ff); color: white; }
.hero span { color: #ffeb3b; }
.btn { background: #0078ff; color: white; padding: 10px 20px; border-radius: 5px; margin-top: 20px; cursor: pointer; transition: 0.3s; }
.btn:hover { background: #005bb5; }

/* Projects */
.projects { padding: 50px 20px; background: #fafafa; }
.project-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap: 20px; }
.card { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); transition: transform 0.3s; }
.card:hover { transform: translateY(-5px); }

/* Contact */
.contact { padding: 50px 20px; text-align: center; }
.contact form { display: flex; flex-direction: column; max-width: 400px; margin: auto; }
.contact input, .contact textarea { margin: 10px 0; padding: 10px; border-radius: 5px; border: 1px solid #ccc; }

/* Dark Mode */
.dark { background: #121212; color: #fff; }
.dark .navbar, .dark .card, .dark footer { background: #1e1e1e; color: #fff; }