:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #555;
  --border: #eaeaea;
  --primary: #0066cc;
  --primary-hover: #004b99;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 2rem 1rem;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

/* Profile Header */
.profile {
  text-align: center;
  margin-bottom: 3rem;
}

.profile-avatar {
  font-size: 4rem;
  margin-bottom: 0.5rem;
}

.profile h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.tagline {
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.bio {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 1.5rem;
  font-size: 0.95rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  background: var(--primary);
  color: white;
}

.btn:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  background: var(--surface);
  border-color: #ccc;
}

.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 0.5rem 0.5rem;
}

.btn-text:hover {
  background: rgba(0,102,204,0.05);
}

/* Projects Section */
.projects h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  font-weight: 600;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}

.project-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.project-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.project-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.project-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Footer */
footer {
  text-align: center;
  margin-top: 3rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}