:root {
  /* Light mode - Minimalist with green accents */
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --bg-card: #ffffff;
  --text-primary: #0a0a0a;
  --text-secondary: #737373;
  --accent: #22c55e;
  --accent-hover: #16a34a;
  --border: #e5e5e5;
  --shadow: rgba(0, 0, 0, 0.03);
  --shadow-lg: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
  /* Dark mode - Minimalist with green accents */
  --bg-primary: #0a0a0a;
  --bg-secondary: #171717;
  --bg-card: #171717;
  --text-primary: #fafafa;
  --text-secondary: #a3a3a3;
  --accent: #22c55e;
  --accent-hover: #4ade80;
  --border: #262626;
  --shadow: rgba(255, 255, 255, 0.03);
  --shadow-lg: rgba(255, 255, 255, 0.05);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: background-color 0.3s ease;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent);
}

.lang-toggle,
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  width: 45px;
  height: 45px;
}

.lang-toggle {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.theme-toggle {
  font-size: 1.25rem;
}

.lang-toggle:hover,
.theme-toggle:hover {
  background-color: var(--bg-secondary);
}

/* Hero Section */
.hero {
  padding: 4rem 0;
  background-color: var(--bg-secondary);
  transition: background-color 0.3s ease;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.bio {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.75rem 2rem;
  border-radius: 2px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-secondary:hover {
  background-color: var(--accent);
  color: white;
  transform: translateY(-2px);
}

/* Sections */
section {
  padding: 3rem 0;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* Social Links */
.social-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 2px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px var(--shadow);
}

.social-link:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px var(--shadow-lg);
  border-color: var(--accent);
}

.social-link svg {
  width: 24px;
  height: 24px;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2rem;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px var(--shadow);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px var(--shadow-lg);
}

.project-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.tag {
  background-color: var(--bg-secondary);
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 2px;
  font-size: 0.875rem;
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.project-link:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    display: none;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .social-links {
    flex-direction: column;
  }

}

@media (max-width: 480px) {
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }
}