:root {
  --primary: #16a34a;
  --dark: #0f172a;
  --light: #f8fafc;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(135deg, #ecfeff, #f0fdf4);
  color: var(--dark);
}

a {
  text-decoration: none;
  color: inherit;
}

.hidden {
  display: none;
}

header:not(#mainNav) {
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary);
}

nav a {
  margin-left: 16px;
  font-weight: 500;
}

nav a.btn {
  padding: 8px 16px;
  background: var(--primary);
  color: white;
  border-radius: 6px;
}

footer {
  text-align: center;
  padding: 30px;
  font-size: 14px;
  color: #64748b;
}

.breadcrumb {
  font-size: 13px;
  margin-bottom: 16px;
  color: #64748b;
}

.breadcrumb a {
  color: #2563eb;
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}