body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: #f0f0f0;
  display: flex;
  justify-content: center;
  padding: 40px;
}

.container {
  max-width: 1000px;
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  padding: 30px;
  border-radius: 16px;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 40px rgba(0, 255, 255, 0.5), 0 0 80px rgba(0, 255, 255, 0.3),
    0 0 120px rgba(0, 255, 255, 0.2);
  transition: box-shadow 0.4s ease;
}

.container:hover {
  box-shadow: 0 0 60px rgba(0, 255, 255, 0.7), 0 0 100px rgba(0, 255, 255, 0.4),
    0 0 160px rgba(0, 255, 255, 0.3);
}

h1 {
  font-size: 2.5rem;
  text-align: center;
  color: #00ffff;
  margin-bottom: 5px;
}

.subheading {
  text-align: center;
  font-style: italic;
  color: #ccc;
  margin-bottom: 30px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

select {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  border-radius: 8px;
  background-color: #1e2b35;
  color: #fff;
  border: none;
}

input[type="radio"] {
  margin-right: 8px;
  accent-color: #00ffff;
}

input[type="range"] {
  width: 100%;
  margin-bottom: 20px;
}

textarea {
  width: 100%;
  height: 150px;
  font-family: monospace;
  font-size: 14px;
  padding: 10px;
  border-radius: 8px;
  border: none;
  resize: vertical;
  background: #1e2b35;
  color: #fff;
}

input[type="file"] {
  background-color: #1e2b35;
  padding: 10px;
  color: #fff;
  border-radius: 8px;
  margin-bottom: 20px;
  width: 100%;
}

.upload-section,
.input-section {
  margin-bottom: 30px;
}

.buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

button {
  background: #00ffff;
  border: none;
  color: #000;
  padding: 12px 24px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #00cccc;
}

#output canvas {
  margin-bottom: 20px;
  max-width: 100%;
  border: 1px solid #444;
  border-radius: 8px;
}