:root {
  --primary: #7367f0;
  --secondary: #6c757d;
  --success: #198754;
  --info: #0dcaf0;
  --warning: #ffc107;
  --danger: #dc3545;
  --light: #f8f9fa;
  --dark: #212529;
  --body-bg: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #212529;
  --border-color: rgba(0, 0, 0, 0.125);
  --sidebar-bg: #ffffff;
  --sidebar-hover: #f8f9fa;
  --sidebar-active: linear-gradient(72.47deg, rgb(115, 103, 240) 22.16%, rgba(115, 103, 240, .7) 76.47%);
  --sidebar-active-text: #ffffff;
  --sidebar-active-shadow: 0 2px 6px rgba(115, 103, 240, .48);
  --v-global-theme-primary: 115, 103, 240;
  --v-theme-primary: var(--v-global-theme-primary);
  --v-theme-on-primary: 255, 255, 255;
  --v-theme-primary-overlay-multiplier: 2;
}

/* 暗黑模式 */
[data-theme="dark"] {
  --primary: #7367f0;
  --secondary: #8c959e;
  --success: #28a745;
  --info: #17a2b8;
  --warning: #ffca2c;
  --danger: #e74c3c;
  --light: #343a40;
  --dark: #e9ecef;
  --body-bg: #121212;
  --card-bg: #1e1e1e;
  --text-color: #e9ecef;
  --border-color: rgba(255, 255, 255, 0.125);
  --sidebar-bg: #1e1e1e;
  --sidebar-hover: #2c2c2c;
  --sidebar-active: linear-gradient(72.47deg, rgb(115, 103, 240) 22.16%, rgba(115, 103, 240, .7) 76.47%);
  --sidebar-active-text: #ffffff;
  --sidebar-active-shadow: 0 2px 6px rgba(115, 103, 240, .48);
  --v-global-theme-primary: 115, 103, 240;
  --v-theme-primary: var(--v-global-theme-primary);
  --v-theme-on-primary: 255, 255, 255;
  --v-theme-primary-overlay-multiplier: 2;
}

body {
  background-color: var(--body-bg);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

/* 侧边栏样式 */
.sidebar {
  background-color: var(--sidebar-bg);
  padding: 0;
  transition: all 0.3s ease;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar .nav-link {
  color: var(--text-color);
  border-radius: .4rem;
  padding: 0.5rem 1rem;
  margin: 0.1rem 0.5rem;
  transition: all 0.2s ease-in-out;
}

.sidebar .nav-link:hover {
  background-color: var(--sidebar-hover);
}

.sidebar .nav-link.active {
  background: var(--sidebar-active);
  color: var(--sidebar-active-text);
  box-shadow: var(--sidebar-active-shadow);
  font-weight: 500;
  border-radius: .4rem;
}

.sidebar .nav-link i {
  margin-right: 8px;
}

.sidebar .nav-header {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--secondary);
  padding: 1rem 1rem 0.25rem;
  font-weight: bold;
}

/* 主内容区 */
.main-content {
  flex: 1;
  padding: 0;
  min-height: 100vh;
  transition: all 0.3s ease;
}

/* 卡片样式 */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  margin-bottom: 1rem;
}

.card-header {
  background-color: rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  font-weight: 500;
}

[data-theme="dark"] .card-header {
  background-color: rgba(255, 255, 255, 0.05);
}

/* 工具项卡片悬停效果 */
.card:hover {
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

/* 主题切换按钮 */
#theme-toggle {
  border-radius: 50%;
  width: 38px;
  height: 38px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--light);
  border: none;
  color: var(--dark);
}

[data-theme="dark"] #theme-toggle {
  background-color: var(--dark);
  color: var(--light);
}

/* 页脚样式 */
.footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: 1rem 0;
  margin-top: auto;
}

/* 二维码工具样式 */
.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 256px;
  border: 2px dashed var(--border-color);
  border-radius: 8px;
}

#qr-result img {
  max-width: 100%;
  border-radius: 8px;
}

.qr-history-item {
  cursor: pointer;
  transition: all 0.2s ease;
}

.qr-history-item:hover {
  transform: scale(1.03);
}

/* 响应式布局调整 */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  
  .sidebar .d-flex {
    height: auto !important;
  }
  
  .main-content {
    margin-left: 0 !important;
    width: 100%;
  }
}

/* 工具内容通用样式 */
.tool-container {
  padding: 20px;
}

/* 复制按钮样式 */
.copy-btn {
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  background-color: var(--light);
  border: 1px solid var(--border-color);
  font-size: 14px;
}

[data-theme="dark"] .copy-btn {
  background-color: var(--dark);
}

.copy-btn:hover {
  background-color: var(--primary);
  color: white;
}

/* 表单元素样式优化 */
.form-control, .form-select {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

.form-control:focus, .form-select:focus {
  background-color: var(--card-bg);
  color: var(--text-color);
}

[data-theme="dark"] .form-control, 
[data-theme="dark"] .form-select {
  background-color: #2c2c2c;
  color: var(--text-color);
}

/* 历史记录项样式 */
.history-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.history-item:hover {
  background-color: var(--sidebar-hover);
}

/* 使用记录图表区域 */
#popular-tools-chart {
  min-height: 200px;
}

/* 最近使用列表 */
#recent-tools-list .list-group-item {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

/* 美化滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--body-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 正则表达式测试器样式 */
#highlight-container {
  font-family: monospace;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 400px;
  overflow-y: auto;
}

.line-numbers {
  counter-reset: line;
}

.line-numbers .line {
  position: relative;
  padding-left: 3.5em;
  min-height: 1.5em;
  line-height: 1.5em;
}

.line-numbers .line-number {
  position: absolute;
  left: 0;
  width: 2.5em;
  color: var(--secondary);
  text-align: right;
  padding-right: 0.5em;
  border-right: 1px solid var(--border-color);
  user-select: none;
}

#match-table code {
  white-space: pre-wrap;
  word-break: break-all;
  background-color: var(--light);
  padding: 2px 4px;
  border-radius: 3px;
}

[data-theme="dark"] #match-table code {
  background-color: #2c2c2c;
}

.reference-container .table {
  font-size: 0.9rem;
}

.reference-container .card {
  margin-bottom: 1rem;
}

.reference-container .card-header {
  font-weight: bold;
}

/* 文本差异对比样式 */
.diff-content {
  font-family: 'Courier New', Courier, monospace;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 14px;
  line-height: 1.5;
  padding: 10px;
  margin: 0;
  max-height: 400px;
  overflow-y: auto;
}

.diff-added {
  background-color: #e6ffed;
  color: #22863a;
  text-decoration: none;
  padding: 1px 0;
}

.diff-removed {
  background-color: #ffeef0;
  color: #cb2431;
  text-decoration: line-through;
  padding: 1px 0;
}

.diff-sample {
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 3px;
}

.diff-sample.diff-added {
  background-color: #e6ffed;
  border: 1px solid #22863a;
}

.diff-sample.diff-removed {
  background-color: #ffeef0;
  border: 1px solid #cb2431;
}

.diff-sample.diff-unchanged {
  background-color: #f6f8fa;
  border: 1px solid #d1d5da;
}

/* 按钮主题色覆盖 */
.btn-primary {
  background-color: rgb(var(--v-theme-primary)) !important;
  color: rgb(var(--v-theme-on-primary)) !important;
  border-color: rgb(var(--v-theme-primary)) !important;
  --v-theme-overlay-multiplier: var(--v-theme-primary-overlay-multiplier);
}

.btn-primary:hover {
  background-color: rgba(var(--v-theme-primary), 0.8) !important;
  border-color: rgba(var(--v-theme-primary), 0.8) !important;
}

.btn-outline-primary {
  color: rgb(var(--v-theme-primary)) !important;
  border-color: rgb(var(--v-theme-primary)) !important;
}

.btn-outline-primary:hover {
  background-color: rgb(var(--v-theme-primary)) !important;
  color: rgb(var(--v-theme-on-primary)) !important;
}