:root {
  --bg-color: #ffffff;
  --text-color: #111111;
  --border-color: #dddddd;
  --link-color: #333333;
  --link-hover: #000000;
  --button-bg: #f7f7f7;
  --button-hover: #eaeaea;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1rem;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.6;
  font-size: 16px;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

.logo {
  max-width: 120px;
  height: auto;
  opacity: 0.95;
  margin-bottom: 1rem;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 0;
  font-weight: 600;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
  background-color: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  font-weight: 500;
}

h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
}

p {
  margin-top: 1rem;
}

ul {
  margin: 1rem 0 1rem 1.5rem;
  padding-left: 0;
}

li {
  margin-bottom: 0.5rem;
}

a {
  display: inline-block;
  margin-top: 1rem;
  margin-right: 1rem;
  padding: 0.5rem 1rem;
  background-color: var(--button-bg);
  color: var(--link-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  background-color: var(--button-hover);
  color: var(--link-hover);
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: #888;
  font-size: 0.9rem;
}

/* 2-column layout for GitHub / HuggingFace projects */
.project-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 1rem;
}

.project-columns .column {
  flex: 1 1 300px;
}

.project-columns h3 {
  margin-bottom: 0.5rem;
}
.project-columns ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.project-columns li {
  margin-bottom: 0.5rem;
}

.highlight {
  background: #f9f9f9;
  padding: 1rem;
  margin: 2rem 0;
  border-left: 4px solid var(--border-color);
}

@media (max-width: 600px) {
  a {
    display: block;
    width: 100%;
    text-align: center;
    margin: 1rem 0 0;
  }

  .project-columns {
    flex-direction: column;
  }
}