/* Base styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9f9;
  color: #222;
  margin: 0;
  padding: 20px;
  min-height: 125vh;
}

.wrapper {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-top: 45px;
}

h1 {
  font-size: 2em;
  margin-bottom: 10px;
}

h2, h4 {
  margin-top: 20px;
  margin-bottom: 10px;
}

.back-button {
  position: absolute;
  top: 20px;
  left: 20px;
  background-color: black;
  color: white;
  padding: 8px 14px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
  z-index: 1000;
}

.back-button:hover {
  background-color: #333;
}


/* Canvas styles */
.canvas-container {
  margin: 20px auto;
  display: flex;
  justify-content: center;
}

canvas {
  border: 2px solid #ccc;
  border-radius: 6px;
}

.dimension-buttons button {
  margin: 5px;
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
}

#dimension-select {
  margin: 10px 0;
  padding: 10px 14px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background-color: #f5f5f5;
  color: #333;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

#dimension-select:hover {
  border-color: #888;
}

#dimension-select:focus {
  border-color: #007BFF;
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
  background-color: #fff;
}

label[for="dimension-select"] {
  font-weight: 600;
  font-size: large;
  display: block;
  margin-top: 20px;
  margin-bottom: 6px;
  color: #000000;
}