@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css");

:root {
  --bg-color: #1b1d25;
  --bg-nav: #0f1118;
  --text-color: #e5e7eb;
  --accent: #22d3ee;
  --muted: #9ca3af;
  --divider: rgba(229,231,235,0.25);
}

.light {
  --bg-color: #ffffff;
  --bg-nav: #f8fafc;
  --text-color: #1f2937;
  --divider: rgba(31,41,55,0.25);
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
header {
  background: var(--bg-nav);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.6);
  padding: 0 1rem;
}

/* Toggle button (hidden on desktop) */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Main nav */
nav.main-nav {
  justify-self: center;
}
nav.main-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav.main-nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem; 
}
nav.main-nav a[aria-current="page"] {
  color: white;
  font-weight: 700;
}
nav.main-nav a:hover {
  color: var(--accent);
}

/* Dark/light toggle icon */
.moon {
  font-size: 1.35rem;
  cursor: pointer;
  user-select: none;
  margin-right: 1.5rem;
}