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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

body > main,
body > .project-content {
  flex: 1;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: clamp(16px, 1.5vw, 32px) clamp(20px, 2.2vw, 48px);
}

.logo {
  font-weight: 400;
  font-size: clamp(14px, 1vw, 18px);
  color: #000;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: clamp(16px, 1.5vw, 32px);
}

.nav-link {
  font-size: clamp(14px, 1vw, 18px);
  color: rgba(0, 0, 0, 0.5);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: #000;
}

.section-label {
  font-size: clamp(12px, 0.9vw, 16px);
  font-weight: 600;
  color: #000;
  margin-bottom: clamp(8px, 0.7vw, 14px);
  letter-spacing: 0.01em;
}

/* Footer */
footer {
  padding: clamp(40px, 4vw, 80px) clamp(20px, 2.2vw, 48px);
}

footer::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: rgba(0, 0, 0, 0.15);
  margin-bottom: clamp(24px, 2.5vw, 48px);
}

.footer-grid {
  display: flex;
  gap: clamp(40px, 4vw, 80px);
}

.footer-col p,
.footer-col a {
  font-size: clamp(12px, 0.9vw, 16px);
  color: rgba(0, 0, 0, 0.5);
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-col:first-child p {
  max-width: 20em;
}

.footer-col a:hover {
  color: #000;
}

.footer-col a {
  display: block;
}

.footer-copyright {
  margin-top: clamp(32px, 3vw, 60px);
  font-size: clamp(11px, 0.7vw, 13px);
  color: rgba(0, 0, 0, 0.3);
}

/* Colour picker swatch — clean circle */
#bg-color::-webkit-color-swatch-wrapper { padding: 0; }
#bg-color::-webkit-color-swatch { border: none; border-radius: 50%; }
#bg-color::-moz-color-swatch { border: none; border-radius: 50%; }

/* Mobile */
@media (max-width: 768px) {
  header {
    padding: 16px 20px;
  }

  footer {
    padding: 40px 20px;
  }

  .footer-grid {
    flex-direction: column;
    gap: 24px;
  }
}