:root {
  --bg: #ffffff;
  --text: #000000;
  --accent: #0077ff;
}

[data-theme="dark"] {
  --bg: #121212;
  --text: #e0e0e0;
  --accent: #00cfff;
}

body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  background: var(--accent);
  color: white;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  align-items: center;
}

.hero {
  padding: 100px 20px;
  background: #f0f0f0;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
}

.btn {
  padding: 10px 20px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-radius: 5px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 20px;
}

.project-card {
  border: 1px solid #ccc;
  padding: 15px;
  border-radius: 10px;
  background: white;
  transition: transform 0.3s;
}

.project-card:hover {
  transform: scale(1.02);
}

.tech-icons i {
  margin-right: 10px;
}

.skills-list i {
  font-size: 2rem;
  margin: 10px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #333;
  color: white;
}