/*
* 文件名: tools.css
* 功能: 工具箱页面样式文件
* 作者: AI助手
* 创建日期: 2024年12月
* 描述: 为工具箱页面提供专业的视觉设计和交互效果
*/

/* 页面头部样式 */
.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.header-content {
  position: relative;
  z-index: 2;
}

.header-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.header-content p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* 工具导航样式 */
.tools-nav {
  margin: 40px 0;
  text-align: center;
}

.nav-tabs {
  display: inline-flex;
  background: #f8f9fa;
  border-radius: 50px;
  padding: 5px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.tab-btn {
  background: none;
  border: none;
  padding: 12px 24px;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
  color: #666;
  white-space: nowrap;
}

.tab-btn.active {
  background: #667eea;
  color: white;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.tab-btn:hover:not(.active) {
  background: #e9ecef;
  color: #333;
}

/* 工具区域样式 */
.tools-section {
  display: none;
  margin-bottom: 60px;
}

.tools-section.active {
  display: block;
  animation: fadeInUp 0.5s ease;
}

.tools-section h2 {
  font-size: 2rem;
  margin-bottom: 30px;
  text-align: center;
  color: #333;
}

/* 工具网格布局 */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

/* 工具卡片样式 */
.tool-card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid #e9ecef;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.tool-header {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  padding: 25px;
  border-bottom: 1px solid #dee2e6;
}

.tool-header h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  color: #333;
  font-weight: 600;
}

.tool-header p {
  color: #666;
  margin: 0;
  font-size: 0.95rem;
}

/* 表单样式 */
.tool-form {
  padding: 25px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #fff;
}

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

.form-group textarea {
  resize: vertical;
  min-height: 80px;
  font-family: inherit;
}

/* 计算按钮样式 */
.calc-btn {
  width: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 15px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
}

.calc-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

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

/* 结果显示样式 */
.result {
  margin-top: 20px;
  padding: 15px;
  border-radius: 8px;
  font-weight: 500;
  display: none;
}

.result.show {
  display: block;
  animation: slideDown 0.3s ease;
}

.result.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.result.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.result.info {
  background: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* 结果详情样式 */
.result-details {
  margin-top: 10px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 5px 0;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.result-item:last-child {
  border-bottom: none;
  font-weight: 600;
  font-size: 1.1rem;
}

.result-label {
  color: #666;
}

.result-value {
  font-weight: 600;
  color: #333;
}

.result-value.positive {
  color: #28a745;
}

.result-value.negative {
  color: #dc3545;
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
  }
  to {
    opacity: 1;
    max-height: 200px;
    padding-top: 15px;
    padding-bottom: 15px;
  }
}

/* 加载状态 */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 提示信息样式 */
.tooltip {
  position: relative;
  display: inline-block;
  cursor: help;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .page-header {
    padding: 60px 0 40px;
  }
  
  .header-content h1 {
    font-size: 2.2rem;
  }
  
  .header-content p {
    font-size: 1rem;
  }
  
  .nav-tabs {
    flex-wrap: wrap;
    gap: 5px;
  }
  
  .tab-btn {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .tool-card {
    margin: 0 10px;
  }
  
  .tool-header,
  .tool-form {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .header-content h1 {
    font-size: 1.8rem;
  }
  
  .nav-tabs {
    width: 100%;
    justify-content: center;
  }
  
  .tab-btn {
    flex: 1;
    min-width: 0;
    padding: 8px 12px;
    font-size: 0.85rem;
  }
  
  .tool-header h3 {
    font-size: 1.2rem;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 10px 12px;
  }
  
  .calc-btn {
    padding: 12px;
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  .tool-card {
    background: #2d3748;
    border-color: #4a5568;
    color: #e2e8f0;
  }
  
  .tool-header {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    border-color: #4a5568;
  }
  
  .tool-header h3 {
    color: #e2e8f0;
  }
  
  .tool-header p {
    color: #a0aec0;
  }
  
  .form-group label {
    color: #e2e8f0;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    background: #4a5568;
    border-color: #718096;
    color: #e2e8f0;
  }
  
  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: #667eea;
  }
}

/* 打印样式 */
@media print {
  .navbar,
  .footer,
  .tools-nav {
    display: none;
  }
  
  .page-header {
    background: none;
    color: #333;
    padding: 20px 0;
  }
  
  .tool-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  .calc-btn {
    display: none;
  }
}