* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
  padding: 20px;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #2c3e50;
}

.card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 25px;
  margin-bottom: 30px;
}

h2 {
  color: #2c3e50;
  margin-bottom: 15px;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

ol {
  padding-left: 20px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 10px;
}

code {
  background-color: #f8f8f8;
  padding: 3px 6px;
  border-radius: 3px;
  font-family: monospace;
}

.overlay-url {
  background-color: #f8f8f8;
  padding: 15px;
  border-radius: 5px;
  margin-top: 20px;
}

.overlay-url h3 {
  margin-bottom: 10px;
  color: #34495e;
}

input[type="text"] {
  width: calc(100% - 100px);
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

button {
  padding: 10px 15px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #2980b9;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}

input[type="number"], 
input[type="color"],
select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

input[type="checkbox"] {
  margin-right: 10px;
}

input[type="color"] {
  height: 40px;
  width: 60px;
  padding: 2px;
}

input[type="range"] {
  width: calc(100% - 90px);
  margin: 0 10px;
}

.color-control {
  display: flex;
  align-items: center;
}

#apply-settings {
  width: 100%;
  margin-top: 10px;
  background-color: #2ecc71;
}

#apply-settings:hover {
  background-color: #27ae60;
}

.preview-container {
  width: 100%;
  height: 400px;
  border: 1px solid #ddd;
  border-radius: 4px;
  overflow: hidden;
  background-color: #333;
  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4QEFECsmoylg4QAAABl0RVh0Q29tbWVudABDcmVhdGVkIHdpdGggR0lNUFeBDhcAAAAkSURBVDjLY2AYBaNgFIwCMsB/MiaHj9o+asCoTKPAw4MGAABzywJJKdKKKwAAAABJRU5ErkJggg==');
  background-repeat: repeat;
}

#preview-frame {
  width: 100%;
  height: 100%;
  border: none;
}

/* Notes and information boxes */
.note {
  font-size: 0.8em;
  color: #666;
  margin-top: 5px;
  font-style: italic;
}

.info-box {
  background-color: #e8f4fd;
  border-left: 4px solid #3498db;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.info-box p {
  margin: 0;
  color: #2c3e50;
  font-size: 0.9em;
}

/* Tabs styling */
.settings-tabs {
  display: flex;
  margin-bottom: 20px;
  border-bottom: 1px solid #ddd;
}

.tab-btn {
  padding: 10px 15px;
  background-color: #f5f5f5;
  color: #333;
  border: none;
  cursor: pointer;
  margin-right: 5px;
  border-radius: 4px 4px 0 0;
}

.tab-btn.active {
  background-color: #3498db;
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Preset themes */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.preset-card {
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}

.preset-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.preset-card.selected {
  border: 2px solid #3498db;
  box-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

.preset-preview {
  height: 80px;
  border-radius: 5px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4QEFECsmoylg4QAAABl0RVh0Q29tbWVudABDcmVhdGVkIHdpdGggR0lNUFeBDhcAAAAkSURBVDjLY2AYBaNgFIwCMsB/MiaHj9o+asCoTKPAw4MGAABzywJJKdKKKwAAAABJRU5ErkJggg==');
  background-repeat: repeat;
}

.preview-msg {
  width: 80%;
  height: 30px;
  border-radius: 8px;
}

/* Dark theme preview */
.dark-preview .preview-msg {
  background-color: rgba(60, 60, 60, 0.8);
}

/* Light theme preview */
.light-preview .preview-msg {
  background-color: rgba(255, 255, 255, 0.9);
}

/* Transparent theme preview */
.transparent-preview .preview-msg {
  background-color: rgba(0, 0, 0, 0.5);
}

/* Purple theme preview */
.purple-preview .preview-msg {
  background-color: rgba(83, 49, 156, 0.8);
}

/* Green theme preview */
.green-preview .preview-msg {
  background-color: rgba(0, 92, 75, 0.8);
}

/* Gaming theme preview */
.gaming-preview .preview-msg {
  background-color: rgba(20, 20, 20, 0.9);
  border: 1px solid #00ff00;
  box-shadow: 0 0 8px rgba(0, 255, 0, 0.6);
}

@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  input[type="text"] {
    width: 100%;
    margin-bottom: 10px;
  }
  
  #copy-btn {
    width: 100%;
  }
  
  .preset-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .preset-grid {
    grid-template-columns: 1fr;
  }
  
  .settings-tabs {
    flex-direction: column;
  }
  
  .tab-btn {
    width: 100%;
    margin-bottom: 5px;
    border-radius: 4px;
  }
}