:root {
  --bg: #1e1e1e;
  --panel-bg: #252525;
  --text: #f0f0f0;
  --subtext: #aaa;
  --accent: #3a3a3a;
  --border: #444;
  --font: 'Segoe UI', sans-serif;
  --highlight: #4caf50;
}

html, body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  margin: 0;
  padding: 0;
}

.html-minifier-page {
  padding: 2rem;
  max-width: 1280px;
  margin: auto;
}

.html-minifier-page h1 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

/* Controls */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  background-color: var(--panel-bg);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

.control-group {
  flex: 1 1 260px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.button-group button,
.download-controls button,
select,
input[type="file"] {
  padding: 0.6rem 1rem;
  background-color: var(--accent);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
}

.button-group button:hover,
.download-controls button:hover,
select:hover {
  background-color: #4a4a4a;
}

.upload-group label,
.download-group label {
  font-size: 0.9rem;
}

.download-group .download-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.toggle-group label {
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  gap: 0.5rem;
  cursor: pointer;
}

/* Stats */

.stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--subtext);
  margin-bottom: 2rem;
}

/* Code Editors */

.code-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.panel {
  display: flex;
  flex-direction: column;
  min-width: 0; /* ✅ Prevent overflow inside grid */
}


.panel label {
  margin-bottom: 0.5rem;
  font-weight: bold;
  font-size: 0.95rem;
}

textarea {
  position: absolute;
  height: 0;
  width: 0;
  opacity: 0;
  pointer-events: none;
}

.CodeMirror {
  height: 400px;
  width: 100%;
  max-width: 100%;
  background-color: #1b1b1b;
  color: var(--text);
  font-family: monospace;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-sizing: border-box;
  overflow: auto;
}

/* Preview */

.preview {
  background-color: var(--panel-bg);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 2rem;
}

.preview h2 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

#previewFrame {
  width: 100%;
  height: 300px;
  background: #fff;
  border: none;
  border-radius: 4px;
}

/* DOM Tree */

.tree-view {
  background: #121212;
  padding: 1.25rem;
  border-radius: 6px;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

.tree-view h2 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.dom-tree-output {
  font-family: monospace;
  font-size: 0.9rem;
  line-height: 1.4;
  color: #ddd;
  background: #181818;
  padding: 1rem;
  border-radius: 6px;
  max-height: 400px;
  overflow-y: auto;
  white-space: normal;
}

/* Tree View Interactive Branches */
.dom-tree-node {
  margin-left: 1.25rem;
  position: relative;
}

.dom-tree-toggle {
  cursor: pointer;
  color: #4fc3f7;
  user-select: none;
}

.dom-tree-tag {
  color: #81d4fa;
}

.dom-tree-content {
  margin-left: 1rem;
  display: none;
}

.dom-tree-node.open > .dom-tree-content {
  display: block;
}

.dom-tree-node.open > .dom-tree-toggle::before {
  content: '▼ ';
}

.dom-tree-toggle::before {
  content: '▶ ';
}

/* How to Use */

.how-to-use {
  background-color: #141414;
  padding: 1.5rem;
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.6;
  border: 1px solid var(--border);
}

.how-to-use h2 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.how-to-use ul {
  padding-left: 1.25rem;
  list-style-type: disc;
}

/* Responsive Layout */

@media (max-width: 768px) {
  .code-panels {
    grid-template-columns: 1fr;
  }
}

.CodeMirror {
  width: 100%;
  max-width: 100%;
  overflow: auto;
  white-space: pre-wrap; /* ✅ Wrap long lines */
  word-wrap: break-word; /* ✅ Ensure text doesn't overflow horizontally */
  box-sizing: border-box;
}