/* ==========================================================================
   Navigation
   ========================================================================== */
   .nav {
    position: sticky;
    top: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: var(--clr-bg);
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  }
  
  .nav__brand {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--clr-primary);
  }
  
  .nav__links {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
  
  /* standard link */
  .nav__links a,
  .nav__link {
    text-decoration: none;
    font-weight: 500;
    color: var(--clr-text);
    transition: color 0.2s;
  }
  .nav__links a:hover,
  .nav__link:hover {
    color: var(--clr-primary);
  }
  
  /* small “Contact” button */
  .btn--small {
    padding: 0.35rem 0.75rem;
    font-size: 0.875rem;
  }
  
  /* Primary button */
  .btn--primary {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-weight: 600;
    background: var(--clr-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s;
  }
  .btn--primary:hover {
    background: var(--clr-primary-hover);
  }
  
  /* Secondary button (for “Logout” or other less-urgent CTAs) */
  .btn--secondary {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-weight: 600;
    background: transparent;
    color: var(--clr-primary);
    border: 2px solid var(--clr-primary);
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
  }
  .btn--secondary:hover {
    background: var(--clr-primary);
    color: #fff;
  }
  
  /* Theme toggle */
  .theme-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--clr-text);
    cursor: pointer;
  }
  .theme-toggle:hover {
    color: var(--clr-primary);
  }
  
  /* Mobile nav */
  .nav__toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
  }
  @media (max-width: 48rem) {
    .nav__toggle {
      display: block;
    }
    .nav__links {
      position: fixed;
      inset: 0 0 0 auto;
      width: 60%;
      flex-direction: column;
      padding-top: 5rem;
      background: var(--clr-bg);
      transform: translateX(100%);
      transition: transform 0.3s;
    }
    .nav__links.open {
      transform: translateX(0);
    }
  }