/* Base page styling */
body {
  background-color: #0d1a0d; /* deep forest green */
  color: #e3f5e3; /* soft light green */
  font-family: Verdana, sans-serif;
  margin: 0;
  padding: 0;
}

/* Sidebar navigation (desktop) */
.sidenav {
  width: 130px;
  position: fixed;
  z-index: 1000;
  top: 20px;
  left: 10px;
  background: #142814; /* dark muted green */
  overflow-x: hidden;
  padding: 8px 0;
  border-radius: 6px;
  border: 1px solid #1f3d1f;
}

.sidenav a {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 22px;
  color: #a8e6a8; /* accessible green */
  display: block;
  font-weight: bold;
}

.sidenav a:hover {
  color: #ffffff; /* high contrast */
  background-color: #1c3a1c;
}

/* Main content area */
.main {
  margin-left: 140px;
  padding: 20px;
  font-size: 22px;
  line-height: 1.5;
  color: #e3f5e3;
}

/* Responsive images */
.responsive {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 10px 0;
  border-radius: 4px;
  border: 2px solid #1f3d1f;
}

/* Mobile layout */
@media screen and (max-width: 600px) {

  /* Sidebar becomes a fixed top nav */
  .sidenav {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    border-radius: 0;
    padding: 10px 0;
    text-align: center;
    background: #142814;
    border-bottom: 2px solid #1f3d1f;
  }

  .sidenav a {
    font-size: 18px;
    padding: 10px 14px;
    display: inline-block;
  }

  /* Push main content down so it doesn't hide under nav */
  .main {
    margin-left: 0;
    margin-top: 80px;
    font-size: 18px;
    padding: 15px;
  }
}

/* Extra small screens */
@media screen and (max-width: 400px) {
  .sidenav a {
    font-size: 16px;
    padding: 8px;
  }

  .main {
    font-size: 17px;
  }
}