/* General styles */
body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #333;
  transition: background-color 0.3s, color 0.3s;
}

/* General Layout */
.container {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding: 10px 0;
  background: linear-gradient(135deg, #007BFF, #0056b3);
  color: white;
  border-radius: 10px;
}

header h1 {
  font-size: 2rem;
  margin: 0;
}

.controls {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
}

/* Buttons */
button {
  padding: 10px 20px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

#toggle-dark-mode {
  background-color: #222;
  color: #fff;
}

#toggle-dark-mode.light-mode {
  background-color: #fff;
  color: #000;
  border: 1px solid #ccc;
}

#toggle-format, #toggle-fullscreen {
  background-color: #007BFF;
  color: #fff;
}

button:hover {
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

/* Story Content */
#story-content {
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

#story-content.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: white;
  z-index: 1000;
  padding: 0;
  box-shadow: none;
}

iframe {
  width: 100%;
  height: 100vh;
  border: none;
}

/* Exit Fullscreen Button */
#exit-fullscreen {
  display: none;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1100;
  padding: 10px 20px;
  background-color: #FF4136;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
}

/* Chapter List */
.chapter-list {
  margin-top: 20px;
}

.chapter-list h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: #007BFF;
}

.chapter-item {
  margin: 5px 0;
  padding: 10px 15px;
  background-color: #e9f5ff;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.chapter-item:hover {
  background-color: #cceeff;
}

.chapter-item:active {
  background-color: #99ddff;
}

/* Dark Mode */
.dark-mode {
  background-color: #222;
  color: #fff;
}

.dark-mode #story-content {
  background-color: #333;
  color: #ddd;
}

.dark-mode .chapter-item {
  background-color: #333;
  color: #fff;
}

.dark-mode .chapter-item:hover {
      background-color: #444;
    }