:root {
  --bg: #e5e5e5;
  --fg: #000000;
  --muted: #333333;
  --accent: #000000;
  --max-width: 640px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.avatar {
  display: block;
  width: 200px;
  height: 200px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  object-fit: cover;
}

h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
}

.tagline {
  margin: 0.25rem 0 0;
  font-size: 1.1rem;
  color: var(--muted);
}

.bio {
  margin-top: 2.5rem;
  font-size: 1.05rem;
}

.bio p {
  margin: 0 0 1rem;
}

.contact {
  margin-top: 2rem;
  text-align: center;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--accent);
  border-radius: 4px;
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.button:hover,
.button:focus {
  background-color: var(--accent);
  color: var(--bg);
}

.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

a {
  color: var(--fg);
}