:root {
  --main: #25274D;
  --accent: #29648A;
  --contrast: #2E9CCA;
  --bg: #f4f4f8;
  --card: #ffffff;
  --text: #22223b;
  --muted: #8d99ae;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  background: var(--main);
  color: #fff;
  padding: 1.5rem 1rem 1rem;
  text-align: center;
}

header h1 { margin: 0; }

nav ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem;
}

nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  transition: background 0.2s;
}

nav a:hover { background: var(--accent); }

main {
  max-width: 850px;
  margin: 2rem auto;
  padding: 0 1rem;
}

section { margin-bottom: 2.5rem; }

h2 {
  margin-top: 0;
  color: var(--accent);
}

ul.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
}

ul.tags li {
  list-style: none;
  background: var(--contrast);
  color: #fff;
  border-radius: 15px;
  padding: 0.4rem 1rem;
  font-size: 1rem;
}

.project-card {
  background: var(--card);
  border-radius: 8px;
  box-shadow: 0 1px 4px #0001;
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}

footer {
  background: var(--main);
  color: #fff;
  text-align: center;
  padding: 1rem 0;
  margin-top: 2.5rem;
}

@media (max-width: 600px) {
  main { padding: 0 0.5rem; }
  nav ul { flex-direction: column; gap: 0.5rem; }
}