body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.container {
  max-width: 420px;
  background: #fff;
  margin: 40px auto;
  padding: 20px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}

h2 {
  margin-bottom: 5px;
}

.owner {
  margin-top: 0;
  margin-bottom: 15px;
  font-size: 14px;
  color: #555;
}

.owner span {
  font-weight: bold;
  color: #667eea;
}

input, select, button {
  width: 100%;
  margin: 8px 0;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 14px;
}

.row {
  display: flex;
  gap: 10px;
}

button {
  background: #667eea;
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background: #5a67d8;
}

canvas {
  max-width: 100%;
  margin-top: 15px;
  border-radius: 6px;
}

#finalSize {
  margin-top: 10px;
  font-size: 14px;
  color: #333;
}

#download {
  display: block;
  margin-top: 12px;
  background: green;
  color: #fff;
  padding: 10px;
  text-decoration: none;
  border-radius: 6px;
}

#statusMsg {
  display: none;
  margin-top: 10px;
  font-size: 14px;
  color: #2d7a2d;
}