* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Tahoma, sans-serif;
  background: #f5f5f5;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  gap: 20px;
}

h1 {
  color: #2c3e50;
  margin-bottom: 10px;
}

canvas {
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

button {
  padding: 12px 30px;
  font-size: 18px;
  font-family: Tahoma, sans-serif;
  background: #e74c3c;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #c0392b;
}

button:disabled {
  background: #aaa;
  cursor: not-allowed;
}

#result {
  font-size: 24px;
  font-weight: bold;
  color: #2c3e50;
}

/* ادمین */
#add-section {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

input {
  padding: 10px;