:root {
  --primary: #6b5cff;
  --primary-light: #f3f1ff;
  --text: #1f1f1f;
  --muted: #666;
  --border: #e6e6e6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: #ffffff;
  line-height: 1.6;
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  opacity: 0.85;
}

/* Navigation */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2rem;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
}

.nav a {
  color: var(--primary);
  margin-left: 1rem;
  font-weight: 500;
}

.logo {
  font-weight: 700;
}

.nav-links a.active {
  background: var(--primary-light);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
}

/* Layout */
.content {
  max-width: 900px;
  margin: auto;
  padding: 3rem 1.5rem;
}

section {
  margin-top: 4rem;
}

/* Headings */
h1 {
  margin-top: 0;
}

h3 {
  position: relative;
  padding-left: 0.75rem;
  margin-bottom: 1rem;
}

h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 4px;
  height: 1.2rem;
  border-radius: 999px;
  background: var(--primary);
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 1rem;
  background: var(--primary-light);
  border-radius: 12px;
  border: 1px solid rgba(107, 92, 255, 0.18);
}

.hero h1 {
  margin-bottom: 0.35rem;
}

.hero h2 {
  margin-top: 0;
  font-weight: 500;
  color: var(--muted);
}

.buttons {
  margin-top: 1.5rem;
}

/* Buttons */
.btn {
  display: inline-block;
  margin: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: #ffffff;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.9;
}

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

/* Pills */
.pills span {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.35rem 0.7rem;
  margin: 0.3rem;
  border-radius: 999px;
  font-size: 0.85rem;
  border: 1px solid rgba(107, 92, 255, 0.25);
}

/* Project cards */
.project-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1.5rem;
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.project-card h4 {
  margin-top: 0;
}

.tag {
  font-size: 0.8rem;
  color: var(--primary);
}

/* Lists */
ul {
  padding-left: 1.25rem;
}

li {
  margin: 0.4rem 0;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

/* Mobile improvements */
@media (max-width: 700px) {
  .nav {
    flex-direction: column;
    gap: 0.8rem;
    align-items: flex-start;
  }

  .nav-links a {
    margin-left: 0;
    margin-right: 1rem;
    display: inline-block;
    margin-top: 0.3rem;
  }

  .content {
    padding: 2rem 1.2rem;
  }

  .hero {
    padding: 3rem 1rem;
  }
}