/* :root defines theme colors */
:root {
  --bg: #f4f7fa;
  --text: #1a202c;
  --primary: #0073bb;
  --secondary: #a31f34;
  --accent: #f9a826;
  --card: #ffffff;
  --hover: #e6f2fb;
  --footer: #2d3748;
  --link-hover: #0096e6;
  --font-main: 'Segoe UI', sans-serif;
}

/* Reset & global styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  line-height: 1.6;
  padding: 20px;
}

/* Header styles */
header {
  text-align: center;
  padding: 2rem 1rem;
  background-color: var(--card);
  border-bottom: 4px solid var(--primary);
  border-radius: 8px;
  margin-bottom: 2rem;
}

.headshot {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid var(--primary);
  margin-bottom: 1rem;
}

/* Contact links */
.contact a {
  color: var(--primary);
  text-decoration: none;
  margin: 0 0.3rem;
}
.contact a:hover {
  color: var(--link-hover);
}

/* Section styles */
main section {
  background-color: var(--card);
  border-left: 6px solid var(--secondary);
  margin: 1rem 0;
  padding: 1rem 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.timeline-item {
  background-color: var(--hover);
  padding: 1rem;
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  transition: background-color 0.3s ease;
  cursor: pointer;
}
.timeline-item:hover {
  background-color: var(--accent);
  color: #fff;
}

/* Footer */
footer {
  text-align: center;
  background-color: var(--footer);
  color: #fff;
  padding: 1.5rem;
  margin-top: 2rem;
  border-radius: 6px;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  .timeline-item {
    font-size: 0.9rem;
  }
}