:root {
  --bg: #ffffff;
  --text: #1f2933;
  --accent: #2563eb;
  --muted: #6b7280;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 2rem;
}

header {
  border-bottom: 1px solid var(--border);
}

.header-content {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.profile-img {
  width: 120px;
  height: 120px;
  border-radius: 100%;
  object-fit: cover;
}

h1 {
  margin: 0;
  font-size: 2rem;
}

h2 {
  margin: 0.25rem 0;
  font-weight: 400;
  color: var(--muted);
}

.links a {
  margin-right: 1rem;
  text-decoration: none;
  color: var(--accent);
  font-weight: 500;
}

section {
  margin-top: 3rem;
}

h3 {
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.5rem;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}

.skills li {
  background: #f3f4f6;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
}

.project {
  margin-top: 1.5rem;
}

.project h4 {
  margin-bottom: 0.3rem;
}

.project .tech {
  color: var(--muted);
  font-size: 0.9rem;
}

.project a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

.highlight-project {
  margin-top: 2rem;
}

.swmmx-project {
  border: 2px solid #1f6feb;
  background: #f6f9ff;
  padding: 1.5rem;
  border-radius: 12px;
}

.swmmx-project h4 {
  color: #1f6feb;
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.project a {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  text-decoration: none;
}

.project a:hover {
  text-decoration: underline;
}