/* 头部样式 */
header {
  background: linear-gradient(45deg, #2c3e50, #34495e);
  color: white;
  padding: 30px;
  text-align: center;
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.2em;
  opacity: 0.9;
}

.content {
  padding: 40px;
}

/* 区块样式 */
.section {
  margin-bottom: 40px;
  padding: 30px;
  background: #f8f9fa;
  border-radius: 10px;
  border-left: 5px solid #3498db;
}

.section h2 {
  color: #2c3e50;
  margin-bottom: 20px;
  font-size: 1.8em;
}

/* 输入框样式 */
.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: #34495e;
}

.input-group input,
.input-group textarea,
.input-group select {
  width: 100%;
  padding: 12px;
  border: 2px solid #bdc3c7;
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.3s;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
  outline: none;
  border-color: #3498db;
}

.input-group textarea {
  min-height: 100px;
  resize: vertical;
}

/* 按钮样式 */
.btn {
  background: linear-gradient(45deg, #3498db, #2980b9);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s;
  margin: 5px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.btn-danger {
  background: linear-gradient(45deg, #e74c3c, #c0392b);
}

.btn-success {
  background: linear-gradient(45deg, #27ae60, #229954);
}

/* 结果显示区域 */
.result {
  margin-top: 20px;
  padding: 20px;
  background: white;
  border-radius: 8px;
  border: 2px solid #ecf0f1;
  min-height: 50px;
}

.result h3 {
  color: #2c3e50;
  margin-bottom: 10px;
}