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

body {
  background-color: #f5f7fa;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

.container {
  max-width: 1200px;
  padding: 0 20px;
  margin: 0 auto;
}

.nav {
  background: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 30px;
  padding: 15px 0;
  position: relative;
  overflow: hidden;
}

.nav::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.9) 1px, transparent 1px);
  background-size: 20px 20px;
  background-color: #409EFF;
  opacity: 0.1;
  z-index: 0;
}

.nav .container {
  position: relative;
  z-index: 1;
}

.nav .logo {
  font-size: 32px;
  font-weight: bold;
  color: #1a365d;
  text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
  margin-bottom: 25px;
  letter-spacing: 2px;
  background: linear-gradient(45deg, #1a365d, #2c5282);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.nav .logo::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #409EFF, transparent);
}

.nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 30px;
}

.nav ul li a {
  color: #606266;
  text-decoration: none;
  font-size: 15px;
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.nav ul li a:hover {
  color: #409EFF;
  background: #ecf5ff;
}

.nav ul li a.active {
  color: #409EFF;
  background: #ecf5ff;
  font-weight: 500;
}

.content {
  margin-top: 40px;
  position: relative;
}

.content::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(64, 158, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(64, 158, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
}

.row {
  display: flex;
  gap: 20px;
  margin: 0 -10px;
}

.col {
  flex: 1;
  padding: 0 10px;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  margin-bottom: 20px;
  overflow: hidden;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255,255,255,0.8);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(64, 158, 255, 0.15);
}

.card-header {
  padding: 15px 20px;
  border-bottom: 1px solid rgba(235, 238, 245, 0.6);
  font-size: 16px;
  font-weight: 500;
  color: #303133;
  background: linear-gradient(to right, rgba(255,255,255,0.95), rgba(255,255,255,0.8));
}

.card-body {
  padding: 20px;
}

.badge {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  margin-left: 8px;
}

.badge-black {
  background-color: #303133;
  color: white;
}

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

.form-label {
  display: block;
  margin-bottom: 8px;
  color: #606266;
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid rgba(220, 223, 230, 0.8);
  border-radius: 4px;
  transition: all 0.3s;
  outline: none;
  box-sizing: border-box;
  background: rgba(255,255,255,0.9);
}

.form-input:focus {
  border-color: #409EFF;
  box-shadow: 0 0 0 3px rgba(64,158,255,0.15);
  background: white;
}

.form-input[readonly] {
  background-color: #f5f7fa;
  cursor: not-allowed;
}

.btn {
  padding: 8px 15px;
  font-size: 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  outline: none;
  background: linear-gradient(45deg, #409EFF, #66b1ff);
  color: white;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255,255,255,0.3),
    transparent
  );
  transition: 0.5s;
}

.btn:hover::after {
  left: 100%;
}

.btn:disabled {
  background-color: #a0cfff;
  cursor: not-allowed;
}

.btn-clear {
  background-color: #909399;
  margin-left: 10px;
}

.btn-clear:hover {
  background-color: #a6a9ad;
}

.btn-group {
  display: flex;
  gap: 10px;
}

.keys-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
  border-radius: 4px;
  overflow: hidden;
  background: white;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.keys-table th, .keys-table td {
  border: 1px solid #ddd;
  padding: 12px 15px;
  text-align: left;
}

.keys-table th {
  background: #f8f9fa;
  color: #606266;
  font-weight: 500;
  padding: 12px 15px;
  text-align: left;
  white-space: nowrap;
  position: relative;
  display: table-cell;
  border-bottom: 2px solid #ebeef5;
}

.keys-table tr:nth-child(even) {
  background-color: #f9f9f9;
}

.keys-table tr:hover {
  background: rgba(236, 245, 255, 0.5);
}

.product-section {
  margin-bottom: 15px;
}

.product-header {
  background: linear-gradient(to right, #f4f6f8, #ecf5ff);
  padding: 12px 15px;
  margin: 5px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 6px;
  transition: all 0.3s ease;
  border: 1px solid rgba(64, 158, 255, 0.1);
}

.product-header:hover {
  background: linear-gradient(to right, #ecf5ff, #e8f4ff);
  border-color: rgba(64, 158, 255, 0.2);
  transform: translateY(-1px);
}

.product-content {
  display: none;
  margin-top: 10px;
}

.product-content.show {
  display: block;
}

.toggle-icon {
  font-size: 18px;
  transition: transform 0.3s;
}

.product-header.active .toggle-icon {
  transform: rotate(180deg);
}

.key-count {
  font-size: 14px;
  color: #666;
  margin-left: 10px;
}

.available-count {
  color: #67c23a;
}

.available {
  color: #67c23a;
  font-weight: 500;
}

.unavailable {
  color: #f56c6c;
  font-weight: 500;
}

.product-header div {
  font-weight: 500;
  color: #303133;
}

.product-header.active div {
  color: #409EFF;
}

@media (max-width: 768px) {
  .col {
    flex: 0 0 100%;
  }
  
  .row {
    flex-direction: column;
  }
  
  .card {
    margin-bottom: 15px;
    height: auto;
  }
  
  .container {
    padding: 0 10px;
  }
  
  .content {
    margin-top: 20px;
  }
  
  .form-group {
    margin-bottom: 10px;
  }
  
  .nav {
    padding: 5px 0;
  }
  
  .nav a {
    padding: 10px 15px;
  }
  
  .btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .btn-clear {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 5px;
  }
  
  .card {
    border-radius: 0;
    margin-bottom: 10px;
  }
  
  .form-input {
    padding: 6px 10px;
  }
  
  .btn-group .btn {
    width: 100%;
  }
}

.input-wrapper {
  position: relative;
  width: 100%;
}

.clear-input {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: #999;
  padding: 4px;
  display: none;
  background: none;
  border: none;
  font-size: 16px;
}

.clear-input:hover {
  color: #666;
}

.input-wrapper.has-value .clear-input {
  display: block;
}

.input-wrapper .form-input {
  padding-right: 30px;
}

/* 默认状态（大屏幕）下隐藏换行 */
.nav ul li a br {
    display: none;
}

/* 修改响应式导航菜单样式 */
@media screen and (max-width: 768px) {
    .nav ul {
        padding: 0;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .nav ul li {
        padding: 5px;
        width: calc(20% - 8px);
        text-align: center;
    }
    
    .nav ul li a {
        font-size: 14px;
        white-space: normal;
        display: flex;
        flex-direction: column;
        align-items: center;
        line-height: 1.2;
        padding: 5px;
        height: 100%;
    }
    
    .nav ul li a br {
        display: block; /* 小屏幕时显示换行 */
    }
}

@media screen and (max-width: 480px) {
    .nav ul li {
        padding: 3px;
    }
    
    .nav ul li a {
        font-size: 12px;
    }
}

/* 添加底部版权样式 */
.footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    color: #909399;
    font-size: 14px;
}

.footer a {
    color: #409EFF;
    text-decoration: none;
}

.footer a:hover {
    color: #66b1ff;
}

@media (max-width: 768px) {
    .footer {
        margin-top: 20px;
        padding: 15px 0;
        font-size: 12px;
    }
}

.lang-switch {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
    font-size: 14px;
}

.lang-switch a {
    color: #606266;
    text-decoration: none;
    padding: 2px 8px;
    border-radius: 4px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.lang-switch a:hover {
    background: #ecf5ff;
    color: #409EFF;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(64, 158, 255, 0.1);
}

.lang-switch a.active {
    background: #409EFF;
    color: white;
    box-shadow: 0 2px 4px rgba(64, 158, 255, 0.2);
}

.lang-switch a::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255,255,255,0.3),
        transparent
    );
    transition: 0.5s;
}

.lang-switch a:hover::after {
    left: 100%;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #409EFF;
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

.loading-indicator {
    text-align: center;
    color: #409EFF;
    margin: 10px 0;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.loading-indicator::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid #409EFF;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    background: #fef0f0;
    color: #f56c6c;
    padding: 8px 16px;
    border-radius: 4px;
    margin-top: 8px;
    font-size: 14px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 优化排序按钮样式 */
.sort-btn {
    background: none;
    border: 1px solid transparent;
    cursor: pointer;
    padding: 2px 6px;
    margin-left: 5px;
    color: #909399;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    vertical-align: middle;
    line-height: 1;
}

.sort-btn:hover {
    background: #f5f7fa;
    border-color: #dcdfe6;
    color: #409EFF;
}

.sort-btn.active {
    color: #409EFF;
    background: #ecf5ff;
    border-color: #b3d8ff;
}

.sort-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    margin-left: 3px;
    font-size: 12px;
    transition: all 0.2s ease;
}

/* 优化排序时的过渡效果 */
.keys-table tbody tr {
    transition: all 0.2s ease-out;
}

.keys-table tbody tr.sorting {
    background-color: rgba(64, 158, 255, 0.04);
}

/* 添加排序时的表格行高亮效果 */
.keys-table tbody tr:hover {
    background-color: #fafafa;
}

/* 添加激活状态的动画效果 */
.sort-btn.active .sort-icon {
    transform: scale(1.1);
}

/* 添加按钮点击效果 */
.sort-btn:active {
    transform: translateY(1px);
}

/* 添加无障碍焦点样式 */
.sort-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(64, 158, 255, 0.2);
}

/* 优化移动端样式 */
@media (max-width: 768px) {
    .sort-btn {
        padding: 4px 8px;
        font-size: 14px;
    }

    .sort-icon {
        width: 16px;
        height: 16px;
    }
}

/* 搜索框样式 */
.search-box {
    position: relative;
    margin-bottom: 20px;
}

.search-box .form-input {
    padding-right: 40px;
    padding-left: 15px;
    height: 40px;
    font-size: 14px;
    border-radius: 20px;
    background: #f5f7fa;
    transition: all 0.3s ease;
}

.search-box .form-input:focus {
    background: #fff;
    box-shadow: 0 0 0 3px rgba(64, 158, 255, 0.1);
}

.search-box .search-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #909399;
    font-size: 16px;
    pointer-events: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .search-box .form-input {
        height: 36px;
        font-size: 13px;
    }
    
    .search-box .search-icon {
        font-size: 14px;
    }
}