body {
  margin: 0;
  font-family: sans-serif;
  background: #111;
  color: #fff;
}

.container {
  max-width: 960px;
  margin: auto;
  padding: 20px;
}

.tab-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tab-button {
  flex: 1;
  padding: 10px;
  background: #444;
  color: white;
  border: none;
  font-weight: bold;
  cursor: pointer;
  border-radius: 5px;
}

.tab-button.active {
  background: crimson;
}

.tool-section {
  margin-top: 20px;
}

.hidden {
  display: none;
}

textarea {
  width: 100%;
  height: 200px;
  background: #222;
  color: #fff;
  padding: 10px;
  border: 1px solid #666;
  border-radius: 5px;
  resize: none;
  font-size: 1rem;
  margin-bottom: 10px;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin: 10px 0;
}

.button-grid button,
input[type="file"] {
  background: #444;
  color: white;
  border: none;
  padding: 10px;
  border-radius: 5px;
  cursor: pointer;
}

canvas {
  width: 100%;
  background: #222;
  border-radius: 5px;
  margin-top: 10px;
}

video {
  width: 100%;
  max-height: 400px;
  background: black;
  border-radius: 5px;
  margin: 10px 0;
}