:root {
  --clr-navy: #0F2A4A;
  --clr-accent: #E85D04;
  --clr-text: #1B1F27;
  --clr-muted: #5B6472;
  --clr-bg: #FAFBFD;
  --font-body: "Inter", system-ui, sans-serif;
  --font-heading: "Playfair Display", Georgia, serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --clr-navy: #A9C7FF;
    --clr-accent: #FF9F5A;
    --clr-text: #E8EAED;
    --clr-muted: #9AA3B2;
    --clr-bg: #12151B;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.5;
  padding: var(--space-lg);
  max-width: 65ch;
  margin: 0 auto;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--clr-navy);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 1.75rem;
  margin: var(--space-lg) 0 var(--space-sm);
}

a {
  color: var(--clr-accent);
}

.card {
  width: 200px;
  padding: 24px;
  border: 4px solid var(--clr-accent);
  margin: 16px;
  background: white;
  margin-top: 32px;
}

.card {
  box-sizing: content-box;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--clr-navy);
  color: white;
  max-width: none;
  margin: 0 -3rem var(--space-lg);
}
.site-header .logo { color: white; font-weight: 700; text-decoration: none; }
.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-md);
}
.nav-links a { color: white; text-decoration: none; }
.nav-links a:hover { color: var(--clr-accent); }

.nav-links a.current {
  text-decoration: underline;
  text-decoration-color: var(--clr-accent);
  text-underline-offset: 4px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.project-card.featured {
  grid-column: span 1;
  grid-row: span 1;
}

@media (min-width: 600px) {
  .project-card.featured {
    grid-column: span 2;
    grid-row: span 2;
  }
}
.project-card {
  padding: var(--space-md);
  border-radius: 12px;
  background: white;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}
.project-card h3 { color: var(--clr-navy); margin-bottom: var(--space-xs); }

.projects {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  padding: 0 var(--space-lg);
  box-sizing: border-box;
  overflow-x: hidden;
}