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

body {
  font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

.title {
  font-size: 2.5rem;
  color: #4a5568;
  margin-bottom: 10px;
  font-weight: 300;
  letter-spacing: 2px;
}

.subtitle {
  color: #718096;
  font-size: 1rem;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 25px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #4a5568;
  font-size: 1rem;
}

.form-input {
  width: 100%;
  padding: 15px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #f7fafc;
  text-align: center;
}

.form-input:focus {
  outline: none;
  border-color: #667eea;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 25px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.result-section {
  margin-top: 30px;
}

.result-title {
  font-size: 1.3rem;
  color: #4a5568;
  margin-bottom: 20px;
  text-align: center;
  font-weight: 500;
}

.loading {
  display: none;
  text-align: center;
  color: #667eea;
  font-style: italic;
  margin-bottom: 20px;
}

.result-container {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.result-card {
  background: #f7fafc;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s ease;
}

.result-card:hover {
  border-color: #667eea;
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.card-title {
  font-size: 1.1rem;
  color: #4a5568;
  margin-bottom: 15px;
  text-align: center;
  font-weight: 600;
}

.score-display {
  font-size: 2.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.score-desc {
  text-align: center;
  color: #718096;
  font-size: 0.9rem;
  line-height: 1.5;
}

.meaning-content {
  color: #2d3748;
  line-height: 1.8;
  font-size: 1rem;
  text-align: left;
  white-space: pre-wrap;
}

.error {
  color: #e53e3e;
  background: #fed7d7;
  border: 1px solid #feb2b2;
  padding: 15px;
  border-radius: 8px;
  margin-top: 15px;
}

/* 平板和桌面端优化 */
@media (min-width: 768px) {
  .result-container {
    grid-template-columns: 1fr 1fr;
  }
  
  .result-card:last-child {
    grid-column: 1 / -1;
  }
}

/* 手机端优化 */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .container {
    padding: 20px;
    margin: 10px;
  }

  .title {
    font-size: 2rem;
  }

  .form-input {
    padding: 12px;
  }

  .btn {
    padding: 12px;
  }

  .result-card {
    padding: 15px;
  }

  .score-display {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 1.8rem;
    letter-spacing: 1px;
  }

  .container {
    padding: 15px;
  }

  .result-card {
    padding: 12px;
  }

  .score-display {
    font-size: 1.8rem;
  }

  .meaning-content {
    font-size: 0.9rem;
  }
}