:root {
  --bg: #ffffff;
  --surface: #f7f7f8;
  --border: #e4e4e7;
  --text: #1a1a1e;
  --text-dim: #6b6b74;
  --accent: #2952e3;
  --accent-wash: rgba(41, 82, 227, 0.08);
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

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

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Nav */

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav .site-name {
  font-weight: 600;
  font-size: 1rem;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

/* Hero / page header */

.hero,
.page-header {
  padding: 3rem 1.5rem 2rem;
  max-width: 720px;
  margin: 0 auto;
}

.avatar {
  display: block;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 0 1.5rem;
  border: 1px solid var(--border);
}

.hero h1,
.page-header h1 {
  font-size: 1.75rem;
  line-height: 1.35;
  margin: 0 0 1rem;
}

.hero .subhead,
.page-header .subhead {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
  max-width: 55ch;
}

.hero .note {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  margin: 0 0 1.75rem;
}

/* Pill links (GitHub / LinkedIn) */

.links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 1.1rem;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.links a:hover {
  background: var(--accent-wash);
  border-color: var(--accent);
  color: var(--accent);
}

/* Project cards */

.project-list {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.project-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.project-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.project-card .card-arrow {
  color: var(--accent);
  transition: transform 0.15s ease;
}

.project-card:hover .card-arrow {
  transform: translateX(3px);
}

.project-card p {
  margin: 0 0 0.5rem;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.project-card .card-link {
  margin: 0;
  color: var(--accent);
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (max-width: 480px) {
  .hero h1,
  .page-header h1 {
    font-size: 1.45rem;
  }
}