:root {
  --bg-color: #121212;
  --text-color: rgba(255, 255, 255, 0.87);
  --text-muted: rgba(255, 255, 255, 0.6);
  --font-main: "Inter", sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  background: var(--bg-color);
  color: var(--text-color);
}

body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.5;
  max-width: 580px;
  margin: 15vh auto 10vh;
  padding: 0 20px;
}

header {
  margin-bottom: 80px;
}

h1 {
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.022em;
  line-height: 1.3;
  margin-bottom: 20px;
}

h2 {
  font-size: 15px;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--text-muted);
}

p {
  margin-bottom: 24px;
  color: var(--text-muted);
}

section {
  margin-bottom: 60px;
}

ul {
  list-style: none;
  margin: 0;
}

li {
  color: var(--text-muted);
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
}

li a {
  text-decoration: none;
}

li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

a {
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: border-color 0.2s ease;
}

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

.greeting {
  font-size: 14px;
  color: var(--text-muted);
}

.portfolio-link a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.portfolio-link a:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

footer {
  margin-top: 100px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  body {
    margin: 10vh auto;
  }
  
  h1 {
    font-size: 28px;
  }
}