:root {
  --navy: #1a2b45;
  --navy-dark: #101c2e;
  --teal: #2a9d8f;
  --teal-dark: #21807a;
  --bg-alt: #f4f6f8;
  --text: #222;
  --text-light: #555;
}

* { box-sizing: border-box; }

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

.navbar {
  position: sticky;
  top: 0;
  background: var(--navy);
  z-index: 100;
}

.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.navbar nav a {
  color: #dbe4ee;
  text-decoration: none;
  margin-left: 24px;
  font-size: 0.95rem;
}

.navbar nav a:hover { color: var(--teal); }

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  padding: 100px 24px;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  margin: 0 0 12px;
}

.hero .tagline {
  font-size: 1.2rem;
  color: #cfe0e8;
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-links { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); }

.btn-secondary { background: transparent; color: #fff; border: 1px solid #fff; }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }

.section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 72px 24px;
}

.section.alt { background: var(--bg-alt); max-width: none; }
.section.alt > * { max-width: 1000px; margin-left: auto; margin-right: auto; }

.section h2 {
  font-size: 1.8rem;
  color: var(--navy);
  margin-bottom: 20px;
  border-bottom: 3px solid var(--teal);
  display: inline-block;
  padding-bottom: 6px;
}

.section-intro { color: var(--text-light); margin-bottom: 32px; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.project-card {
  background: #fff;
  border: 1px solid #e0e4e8;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.project-card h3 { margin-top: 0; color: var(--navy); }

.project-tags {
  font-size: 0.8rem;
  color: var(--teal-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.project-card a {
  color: var(--teal-dark);
  font-weight: 600;
  text-decoration: none;
}

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

.skills-table {
  width: 100%;
  border-collapse: collapse;
  max-width: 600px;
}

.skills-table th, .skills-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid #e0e4e8;
}

.skills-table th {
  background: var(--navy);
  color: #fff;
}

.contact-list {
  list-style: none;
  padding: 0;
}

.contact-list li { margin-bottom: 10px; }

.contact-list a { color: var(--teal-dark); text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }

footer {
  text-align: center;
  padding: 32px 24px;
  background: var(--navy-dark);
  color: #9aa8b8;
  font-size: 0.85rem;
}