:root {
  --bg: #e8e8e8;
  --text: #1a1a1a;
  --text-secondary: #444444;
  --text-muted: #777777;
  --accent: #0055aa;
  --border: #cccccc;
}

[data-theme="dark"] {
  --bg: #111111;
  --text: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #4da6ff;
  --border: #333333;
}

* {
  box-sizing: border-box;
}

::selection {
  background: #555;
  color: #fff;
}

::-moz-selection {
  background: #555;
  color: #fff;
}

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: color 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

[data-theme="light"] .icon-sun,
[data-theme="dark"] .icon-moon {
  display: none;
}

[data-theme="light"] .icon-moon,
[data-theme="dark"] .icon-sun {
  display: block;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 24px;
}

.profile img {
  width: 128px;
  height: 128px;
  border-radius: 12px;
}

.info {
  max-width: 480px;
}

h1 {
  margin: 0 0 4px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.role {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
}

.bio {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-secondary);
}

.tagline {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 300;
  font-style: italic;
  color: var(--text-muted);
}

.keywords {
  margin: 0 0 24px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 12px;
}

nav.secondary {
  margin-bottom: 0;
}

nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

nav a:hover {
  color: var(--text);
}

footer {
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
  cursor: pointer;
}

footer a:hover {
  color: var(--text-secondary);
}

@media (max-width: 600px) {
  main {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
    padding: 60px 24px;
  }

  .profile img {
    width: 100px;
    height: 100px;
  }

  .info {
    max-width: 100%;
  }

  nav {
    justify-content: center;
  }

  .keywords {
    justify-content: center;
  }

  .theme-toggle {
    top: 16px;
    right: 16px;
  }
}