/* Header container */
#site-header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 60px;
  background-color: black;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* Inner wrapper */
.header-content {
  width: 100%;
  max-width: 1200px;
  padding: 0 20px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

/* Social icon nav */
.social-links {
  display: flex;
  gap: 15px;
}

/* Icons */
.social-links img {
  width: 30px;
  height: 30px;
  object-fit: contain;
  transition: transform 0.2s ease;
}

.social-links img:hover {
  transform: scale(1.1);
}

#nav-help-container {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;
  display: inline-block;
}

#nav-help-button {
  background-color: #333;
  color: white;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  text-align: center;
  line-height: 32px;
  font-weight: bold;
  font-size: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  box-shadow: 0 0 0px rgba(255, 255, 255, 0.2);
  position: relative;
}

#nav-instructions {
  position: absolute;
  top: 40px; /* above the button */
  left: 55px;  /* to the left of the button */
  display: none;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-family: Arial, sans-serif;
  text-align: left;
  white-space: nowrap;
  pointer-events: none;
  transform: translate(0, -50%);
}

#nav-help-container:hover #nav-instructions {
  display: block;
}

html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
  width: 100%;
}

canvas {
  display: block;
  z-index: 0;
  pointer-events: auto;
}