/* style.css */
/* Source: https://github.com/trcrsired/pwa-wasm-example
   License: GNU GPL v3.0 */

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background-color: #f9f9f9;
  color: #222;
  line-height: 1.6;
}

/* Ensure proper scaling on mobile */
body {
  font-size: 18px;
  padding: 1rem;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  body {
    font-size: 20px; /* bump font size on small screens */
  }
  h1 {
    font-size: 2.2rem;
  }
}

/* Auto dark mode based on OS preference */
@media (prefers-color-scheme: dark) {
  html, body {
    background-color: #121212;
    color: #e0e0e0;
  }

  h1 {
    color: #ffffff;
  }

  a {
    color: #90caf9;
  }

  ul, li {
    color: #cccccc;
  }
}

/* 🔧 Back to Top button styling — circular and safe */
#backToTop {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom));
  right: calc(20px + env(safe-area-inset-right));
  width: 48px;
  height: 48px;
  font-size: 24px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none; /* Hidden by default */
  z-index: 999;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: background-color 0.3s ease, transform 0.2s ease;
  text-align: center;
  line-height: 48px; /* vertically center the ↑ */
}

#backToTop:hover {
  background-color: #0056b3;
  transform: translateY(-2px);
}

.title-link {
  color: inherit;        /* use the same color as the h1 */
  text-decoration: none; /* remove underline */
  cursor: pointer;       /* show pointer on hover */
}

.title-link:hover {
  text-decoration: none; /* keep underline off on hover */
  color: inherit;        /* prevent color change */
}