/* ========================================
   CSS变量定义
   ======================================== */
:root {
    /* 颜色变量 */
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    --success-color: #48bb78;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --bg-sidebar: #2d3748;
    --bg-hover: #e2e8f0;
    
    /* 文字颜色 */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    --text-sidebar: #e2e8f0;
    
    /* 边框 */
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    
    /* 布局 */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 60px;
    --topbar-height: 60px;
    --container-padding: 24px;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 暗色主题 */
[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    --bg-sidebar: #1a202c;
    --bg-hover: #4a5568;
    
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #cbd5e0;
    --text-light: #a0aec0;
    
    --border-color: #4a5568;
}

/* ========================================
   全局样式重置
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
}

/* ========================================
   应用容器布局
   ======================================== */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* ========================================
   侧边栏样式
   ======================================== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-width)));
}

/* 侧边栏头部 */
.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-sidebar);
    cursor: pointer;
    padding: 8px;
}

.sidebar-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    margin: 4px 0;
    transition: var(--transition-fast);
}

/* 导航菜单 */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
}

.nav-group {
    margin-bottom: 24px;
}

.nav-group-title {
    padding: 8px 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-list {
    list-style: none;
}

.nav-item {
    position: relative;
    cursor: pointer;
    transition: var(--transition-fast);
}

.nav-item:hover {
    background: rgba(255,255,255,0.05);
}

.nav-item.active {
    background: rgba(255,255,255,0.1);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
}

.nav-item {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-sidebar);
}

.nav-icon {
    font-size: 18px;
}

.nav-text {
    font-size: 14px;
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
}

.sidebar-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 12px;
    transition: var(--transition-fast);
}

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

.separator {
    color: var(--text-light);
    font-size: 12px;
}

.copyright {
    text-align: center;
    color: var(--text-light);
    font-size: 11px;
}

/* ========================================
   主内容区域
   ======================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed + .main-content {
    margin-left: 0;
}

/* 顶部栏 */
.top-bar {
    height: var(--topbar-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--container-padding);
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-right: 16px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    transition: var(--transition-fast);
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.top-bar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 语言选择器 */
.language-selector {
    position: relative;
}

.language-selector select {
    appearance: none;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 32px 8px 12px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.language-selector select:hover {
    background: var(--bg-hover);
}

.language-selector select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.language-selector::after {
    content: '▼';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 12px;
    color: var(--text-muted);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-hover);
}

/* ========================================
   工具容器
   ======================================== */
.tool-container {
    flex: 1;
    padding: var(--container-padding);
    background: var(--bg-secondary);
}

.tool-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    margin-bottom: 24px;
}

.tool-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.tool-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.tool-desc {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   表单元素
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 250px;
    font-family: 'Consolas', 'Monaco', monospace;
}

/* 输入框操作按钮 */
.input-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* 复选框 */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ========================================
   工具特定样式
   ======================================== */

/* 两列布局 */
.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

/* 三列布局 */
.three-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.column {
    display: flex;
    flex-direction: column;
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.column-header label {
    font-weight: 500;
    color: var(--text-primary);
}

.column-stats {
    font-size: 12px;
    color: var(--text-muted);
}

/* 文本域容器 */
.textarea-container {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.tool-textarea {
    flex: 1;
    min-height: 300px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    resize: vertical;
}

.textarea-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 4px;
}

.action-btn {
    padding: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.action-btn:hover {
    background: var(--bg-hover);
}

/* ========================================
   Toast提示
   ======================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 20px;
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 2000;
    animation: slideInUp 0.3s ease;
}

.toast.show {
    display: block;
}

.toast.success {
    background: var(--success-color);
    color: white;
}

.toast.error {
    background: var(--danger-color);
    color: white;
}

.toast.warning {
    background: var(--warning-color);
    color: white;
}

.toast.info {
    background: var(--info-color);
    color: white;
}

/* ========================================
   Loading样式
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 3000;
}

.loading-overlay.show {
    display: flex;
}

.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    margin-top: 16px;
    color: var(--text-secondary);
}

.loading-overlay .loading-text {
    color: white;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .three-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* 移动端侧边栏 */
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    /* 主内容区域 */
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    /* 顶部栏 */
    .top-bar {
        padding: 0 16px;
    }
    
    .page-title {
        font-size: 18px;
    }
    
    /* 工具容器 */
    .tool-container {
        padding: 16px;
    }
    
    .tool-panel {
        padding: 16px;
    }
    
    /* 两列布局 */
    .two-columns {
        grid-template-columns: 1fr;
    }
    
    /* 文本域 */
    .tool-textarea {
        min-height: 200px;
    }
    
    /* 按钮组 */
    .btn-group {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    /* 更小屏幕的调整 */
    .sidebar-header {
        padding: 16px;
    }
    
    .logo-text {
        font-size: 16px;
    }
    
    .tool-title {
        font-size: 20px;
    }
    
    .form-control {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* 输入框操作按钮在手机端换行 */
    .input-actions {
        flex-wrap: wrap;
    }
    
    .input-actions .btn {
        flex: 1;
        min-width: 120px;
    }
}

/* 域名IP查询结果样式 */
.domain-ip-results {
    margin-top: 16px;
}

.domain-result {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    padding: 16px;
    background: var(--bg-secondary);
}

.domain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-success {
    background: var(--success-color);
    color: white;
}

.status-warning {
    background: var(--warning-color);
    color: white;
}

.status-danger {
    background: var(--danger-color);
    color: white;
}

.ip-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ip-record {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
}

.record-type {
    background: var(--primary-color);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 500;
    min-width: 40px;
    text-align: center;
}

.ip-address {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.ttl {
    color: var(--text-muted);
    font-size: 12px;
}

/* ========================================
   动画定义
   ======================================== */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========================================
   工具特定样式补充
   ======================================== */

/* 验证码显示 */
.code-display {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    text-align: center;
    margin: 20px 0;
}

.code-text {
    font-size: 36px;
    font-weight: 700;
    font-family: 'Consolas', 'Monaco', monospace;
    letter-spacing: 8px;
    color: var(--primary-color);
}

.code-progress {
    margin-top: 16px;
    height: 4px;
    background: var(--bg-hover);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 1s linear;
}

/* 二维码容器 */
.qr-container {
    display: flex;
    justify-content: center;
    padding: 20px;
    background: white;
    border-radius: var(--border-radius);
    margin: 20px 0;
}

.qr-container canvas {
    max-width: 100%;
    height: auto;
}

/* 状态表格 */
.status-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.status-table th,
.status-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.status-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.status-table tr:hover {
    background: var(--bg-hover);
}

/* 状态标签 */
.status-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.status-badge.success {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
}

.status-badge.error {
    background: rgba(245, 101, 101, 0.1);
    color: var(--danger-color);
}

.status-badge.pending {
    background: rgba(237, 137, 54, 0.1);
    color: var(--warning-color);
}

/* 选项列表 */
.option-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 12px;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.option-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.option-item span {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 工具操作按钮 */
.tool-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* 信息提示框 */
.info-box {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--info-color);
    border-radius: var(--border-radius);
    padding: 16px;
    margin: 20px 0;
}

.info-box h3 {
    color: var(--text-primary);
    font-size: 16px;
    margin-bottom: 8px;
}

.info-box p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.info-box ul {
    margin-top: 8px;
    margin-left: 20px;
}

.info-box li {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 4px;
}

/* 保存的项目列表 */
.saved-items-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.saved-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.saved-item:hover {
    background: var(--bg-hover);
}

.saved-item-info {
    flex: 1;
}

.saved-item-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.saved-item-value {
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'Consolas', 'Monaco', monospace;
}

.saved-item-actions {
    display: flex;
    gap: 8px;
}

.saved-item-actions .btn {
    padding: 6px 12px;
    font-size: 12px;
}

/* 未激活DNS表格样式 */
.nameserver-item {
    font-family: monospace;
    font-size: 12px;
    padding: 2px 0;
    color: var(--text-color);
}

.sort-indicator {
    font-size: 12px;
    margin-left: 4px;
    color: var(--text-muted);
}

.table th[onclick] {
    user-select: none;
}

.table th[onclick]:hover {
    background-color: var(--bg-tertiary);
}

.badge-warning {
    background-color: #ffc107;
    color: #212529;
}

/* 未激活DNS表格美化样式 */
.inactive-dns-container {
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 18px;
}

.domain-count {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
}

.inactive-dns-table {
    margin: 0;
    width: 100%;
    min-width: 800px;
}

.inactive-dns-table th {
    background: var(--bg-tertiary);
    color: var(--text-color);
    font-weight: 600;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border-color);
}

.inactive-dns-table td {
    padding: 16px;
    vertical-align: top;
    border-bottom: 1px solid var(--border-color);
}

.domain-cell .domain-name {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 14px;
    margin-bottom: 4px;
}

.domain-cell .domain-id {
    font-size: 11px;
    color: var(--text-muted);
    font-family: monospace;
}

.status-cell {
    text-align: center;
}

.nameservers-cell {
    max-width: 300px;
}

.nameserver-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nameserver-item:last-child {
    border-bottom: none;
}

.ns-icon {
    font-size: 12px;
}

.ns-name {
    font-family: monospace;
    font-size: 12px;
    color: var(--text-color);
    flex: 1;
    word-break: break-all;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 10px;
    opacity: 0.6;
    transition: all 0.2s;
}

.copy-btn:hover {
    opacity: 1;
    background: var(--bg-tertiary);
}

.no-nameservers {
    color: var(--text-muted);
    font-style: italic;
    font-size: 12px;
}

.created-cell .created-date {
    font-weight: 500;
    color: var(--text-color);
    font-size: 13px;
}

.created-cell .created-time {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.no-date {
    color: var(--text-muted);
    font-style: italic;
    font-size: 12px;
}

.table-footer {
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.table-tips {
    font-size: 12px;
    color: var(--text-muted);
}

.table-tips p {
    margin: 0 0 8px 0;
    font-weight: 600;
}

.table-tips ul {
    margin: 0;
    padding-left: 20px;
}

.table-tips li {
    margin-bottom: 4px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .table-header {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .inactive-dns-table {
        min-width: 600px;
    }
    
    .nameservers-cell {
        max-width: 200px;
    }
    
    .ns-name {
        font-size: 10px;
    }
}

/* 顶级域名表格样式 */
.top-level-domains-container {
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    overflow: hidden;
}

.top-level-domains-table {
    margin: 0;
    width: 100%;
}

.top-level-domains-table th {
    background: var(--bg-tertiary);
    color: var(--text-color);
    font-weight: 600;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border-color);
}

.top-level-domains-table td {
    padding: 12px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.sequence-cell {
    text-align: center;
    font-weight: 500;
    color: var(--text-muted);
}

.top-level-domains-table .domain-name {
    font-weight: 500;
    color: var(--primary-color);
    font-family: monospace;
    font-size: 14px;
}

.action-cell {
    text-align: center;
}

.load-more-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 20px;
}

.load-more-section .btn {
    min-width: 150px;
}

.load-info {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

.btn-outline-primary {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

/* 表格头部信息区域调整 */
.table-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .table-info {
        flex-direction: column;
        gap: 8px;
        align-items: flex-end;
    }
    
    .top-level-domains-table .domain-name {
        font-size: 12px;
        word-break: break-all;
    }
    
    .load-more-section {
        padding: 16px;
    }
}

/* 操作状态容器样式 */
.operation-status-container {
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    overflow: hidden;
}

.operation-status-container h4 {
    margin: 0;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 16px;
}

.table-responsive {
    overflow-x: auto;
    padding: 16px;
}

.table-responsive .table {
    width: 100%;
    margin: 0;
}

/* 调试信息样式 */
.debug-info {
    padding: 12px 16px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    background: var(--bg-tertiary);
}

/* 表格信息区域按钮间距调整 */
.table-info .btn {
    margin: 0 4px;
}

.table-info .btn:first-child {
    margin-left: 0;
}

.table-info .btn:last-child {
    margin-right: 0;
}

/* ===== 首页样式 ===== */
.homepage-container {
    padding: 20px 0;
    max-width: none;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

/* 工具网格 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
    flex: 1;
}

/* 工具卡片 */
.tool-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out both;
    display: flex;
    flex-direction: column;
    min-height: 280px;
    justify-content: space-between;
}

.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.2s; }
.tool-card:nth-child(3) { animation-delay: 0.3s; }
.tool-card:nth-child(4) { animation-delay: 0.4s; }
.tool-card:nth-child(5) { animation-delay: 0.5s; }
.tool-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

.tool-card:hover::before {
    left: 100%;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

.tool-card:active {
    transform: translateY(-5px) scale(0.98);
}

.tool-card.coming-soon {
    opacity: 0.7;
    cursor: not-allowed;
}

.tool-card.coming-soon:hover {
    transform: none;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-color: var(--border-color);
}

.tool-card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.tool-card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0 0 12px 0;
    color: var(--text-color);
}

.tool-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.tool-card-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 0 20px 0;
}

.tool-card-footer {
    margin-top: auto;
    flex-shrink: 0;
}

.tool-card-tag {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.tool-card.coming-soon .tool-card-tag {
    background: var(--text-muted);
}

/* 首页底部 */
.homepage-footer {
    background: var(--bg-tertiary);
    padding: 40px 20px;
    border-top: 1px solid var(--border-color);
}

.stats-section {
    display: flex;
    justify-content: center;
    gap: 60px;
    max-width: 600px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    animation: countUp 2s ease-out 1s both;
}

@keyframes countUp {
    from { opacity: 0; transform: scale(0.5); }
    to { opacity: 1; transform: scale(1); }
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 30px 15px;
    }
    
    .tool-card {
        padding: 25px;
    }
    
    .stats-section {
        gap: 40px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .homepage-header {
        padding: 40px 15px 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .tools-grid {
        padding: 20px 10px;
    }
    
    .tool-card {
        padding: 20px;
    }
    
    .stats-section {
        flex-direction: column;
        gap: 30px;
    }
}

/* 暗色主题适配 */
[data-theme="dark"] .homepage-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

[data-theme="dark"] .tool-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

[data-theme="dark"] .tool-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

/* 移动端侧边栏遮罩层 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

/* 确保侧边栏在遮罩层之上 */
@media (max-width: 768px) {
    .sidebar.show {
        z-index: 999;
    }
}

/* 防止背景滚动 */
body.sidebar-open {
    overflow: hidden;
}

/* 手机号裂变工具样式 */
.form-row {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
}

.form-column {
    flex: 1;
    min-width: 0;
}

/* 控制栏样式 - 所有元素在一行 */
.control-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.control-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    white-space: nowrap;
}

.control-input {
    width: 80px;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    text-align: center;
    background: var(--bg-primary);
    color: var(--text-color);
}

.control-buttons {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.control-info {
    display: flex;
    align-items: center;
    padding: 6px 12px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.control-info .result-count {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.result-count {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 20px;
    }
    
    .form-column {
        width: 100%;
    }
    
    .control-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    .control-group {
        justify-content: space-between;
    }
    
    .control-buttons {
        justify-content: center;
    }
    
    .control-info {
        justify-content: center;
    }
}

@media (max-width: 1200px) {
    .control-bar {
        gap: 15px;
    }
    
    .control-input {
        width: 70px;
    }
}

/* 手机号输入框样式优化 */
.phone-textarea {
    font-family: "Courier New", Consolas, monospace;
    font-size: 14px;
    line-height: 1.4;
    min-height: 300px;
    height: 300px;
    resize: vertical;
}

.phone-textarea::placeholder {
    font-family: inherit;
    color: var(--text-muted);
    opacity: 0.7;
}

/* 确保两个输入框高度一致 */
.form-row .form-column {
    display: flex;
    flex-direction: column;
}

.form-row .form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.form-row .phone-textarea {
    flex: 1;
}

/* 裂变数量输入框 */
#phoneSplitCount {
    text-align: center;
    font-weight: 500;
}

/* 按钮组间距调整 */
.btn-group .btn {
    margin-right: 10px;
}

.btn-group .btn:last-child {
    margin-right: 0;
}

/* ===== 简洁导航栏样式 ===== */

/* 导航菜单 */
.nav-menu {
    list-style: none;
    padding: 20px 0;
    margin: 0;
}

/* 导航项目 */
.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    margin: 2px 0;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-color);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(74, 144, 226, 0.08);
    border-left-color: var(--primary-color);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
    border-left-color: var(--primary-dark);
}

/* 导航图标 */
.nav-icon {
    font-size: 16px;
    margin-right: 12px;
    width: 20px;
    text-align: center;
}

/* 导航文字 */
.nav-text {
    font-size: 14px;
    font-weight: 400;
}

/* 分隔线 */
.nav-divider {
    padding: 16px 20px 8px 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 8px;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
        padding: 16px 0;
    }
    
    .nav-item {
        padding: 10px 16px;
    }
    
    .nav-icon {
        font-size: 14px;
        margin-right: 10px;
        width: 18px;
    }
    
    .nav-text {
        font-size: 13px;
    }
    
    .nav-divider {
        padding: 12px 16px 6px 16px;
        font-size: 11px;
    }
}

/* ===== 差异比对样式 ===== */

/* 差异比对控制区域 */
.diff-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.diff-options {
    display: flex;
    gap: 16px;
}

/* 差异比对容器 */
.diff-container {
    margin-top: 20px;
}

/* 输入区域 */
.diff-input-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.diff-input-column {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-secondary);
}

.diff-input-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.diff-label {
    font-weight: 600;
    color: var(--text-primary);
}

.btn-clear {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.btn-clear:hover {
    background: var(--danger-color);
    color: white;
}

.diff-input-area {
    padding: 0;
}

.diff-input-textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: vertical;
    font-family: 'Courier New', Consolas, monospace;
    font-size: 13px;
    line-height: 1.5;
    padding: 16px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 300px;
}

.diff-input-textarea:focus {
    background: var(--bg-primary);
}

/* 结果区域 */
.diff-results-section {
    margin-top: 32px;
}

.diff-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.diff-results-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.diff-stats {
    display: flex;
    gap: 16px;
    align-items: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
}

.stat-item.added {
    color: var(--success-color);
}

.stat-item.deleted {
    color: var(--danger-color);
}

.stat-item.similarity {
    color: var(--text-muted);
}

.stat-icon {
    font-weight: bold;
    font-size: 16px;
}

/* 并排结果容器 */
.diff-result-container {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-secondary);
}

.diff-result-wrapper {
    display: flex;
    flex-direction: column;
}

.diff-result-headers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border-color);
}

.diff-result-header {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    font-weight: 600;
    text-align: center;
    color: var(--text-primary);
}

.diff-result-scroll-container {
    max-height: 500px;
    overflow-y: auto;
    overflow-x: auto;
    scroll-behavior: smooth;
}

.diff-result-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border-color);
    min-height: 100%;
}

.diff-result-content {
    background: var(--bg-secondary);
    font-family: 'Courier New', Consolas, monospace;
    font-size: 13px;
    line-height: 1.4;
    overflow: visible;
    padding: 0;
}

.diff-side-content {
    width: 100%;
}

/* 差异行样式 */
.diff-line {
    display: flex;
    align-items: stretch;
    padding: 2px 8px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    white-space: pre-wrap;
    word-break: break-word;
    height: 22px;
    line-height: 1.4;
    box-sizing: border-box;
}

.diff-line:last-child {
    border-bottom: none;
}

.line-number {
    display: inline-block;
    width: 40px;
    text-align: right;
    color: var(--text-muted);
    font-size: 12px;
    margin-right: 12px;
    flex-shrink: 0;
    user-select: none;
}

.line-content {
    flex: 1;
    word-break: break-word;
    line-height: 1.4;
    display: flex;
    align-items: center;
    height: 18px;
    overflow: hidden;
}

/* 差异类型样式 */
.diff-line-added {
    background-color: rgba(72, 187, 120, 0.15);
    border-left: 3px solid var(--success-color);
}

.diff-line-deleted {
    background-color: rgba(245, 101, 101, 0.15);
    border-left: 3px solid var(--danger-color);
}

.diff-line-modified {
    background-color: rgba(255, 193, 7, 0.15);
    border-left: 3px solid var(--warning-color);
}

.diff-line-equal {
    background-color: var(--bg-secondary);
}

.diff-line-empty {
    background-color: rgba(108, 117, 125, 0.1);
    color: var(--text-muted);
}

/* 暗色主题适配 */
[data-theme="dark"] .diff-line-added {
    background-color: rgba(72, 187, 120, 0.2);
}

[data-theme="dark"] .diff-line-deleted {
    background-color: rgba(245, 101, 101, 0.2);
}

[data-theme="dark"] .diff-line-modified {
    background-color: rgba(255, 193, 7, 0.2);
}

[data-theme="dark"] .diff-line-equal {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .diff-line-empty {
    background-color: rgba(108, 117, 125, 0.2);
}

/* 响应式适配 */
@media (max-width: 768px) {
    .diff-controls {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .diff-options {
        justify-content: center;
    }
    
    .diff-input-section {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .diff-result-headers {
        grid-template-columns: 1fr;
    }
    
    .diff-result-content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .diff-results-header {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .diff-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .diff-input-textarea {
        min-height: 200px;
        font-size: 12px;
    }
    
    .line-number {
        width: 30px;
        font-size: 11px;
        margin-right: 8px;
    }
    
    .diff-result-content {
        font-size: 12px;
        max-height: 400px;
    }
}

/* ===== 表单帮助信息样式 ===== */
.form-help {
    margin-top: 4px;
}

.form-help .text-muted {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.4;
}

.form-help .text-muted::before {
    content: '';
    display: inline-block;
    width: 2px;
    height: 12px;
    background: var(--primary-color);
    margin-right: 6px;
    vertical-align: middle;
    border-radius: 1px;
}

/* ===== 反馈表单样式 ===== */
.feedback-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger-color);
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.feedback-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

.form-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    min-width: 160px;
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

/* 响应式适配 */
@media (max-width: 768px) {
    .feedback-form {
        max-width: 100%;
        padding: 0 16px;
    }
    
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-large {
        min-width: auto;
        width: 100%;
    }
    
    .form-control {
        padding: 10px 12px;
        font-size: 16px; /* 防止iOS缩放 */
    }
}

/* ===== 反馈成功页面样式 ===== */
.success-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 40px 20px;
}

.success-animation {
    margin-bottom: 32px;
}

.success-checkmark {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: inline-block;
    stroke-width: 2;
    stroke: var(--success-color);
    stroke-miterlimit: 10;
    margin: 10% auto;
    box-shadow: inset 0px 0px 0px var(--success-color);
    animation: fill 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
    position: relative;
}

.success-checkmark.animate {
    animation: fill 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
}

.success-checkmark .check-icon {
    width: 80px;
    height: 80px;
    position: relative;
    border-radius: 50%;
    box-sizing: border-box;
    border: 2px solid var(--success-color);
}

.success-checkmark .check-icon::before {
    top: 3px;
    left: -2px;
    width: 30px;
    transform-origin: 100% 50%;
    border-radius: 100px 0 0 100px;
}

.success-checkmark .check-icon::after {
    top: 0;
    left: 30px;
    width: 60px;
    transform-origin: 0 50%;
    border-radius: 0 100px 100px 0;
    animation: rotate-circle 4.25s ease-in;
}

.success-checkmark .check-icon::before,
.success-checkmark .check-icon::after {
    content: '';
    height: 100px;
    position: absolute;
    background: var(--bg-primary);
    transform: rotate(-45deg);
}

.success-checkmark .icon-line {
    height: 2px;
    background: var(--success-color);
    display: block;
    border-radius: 2px;
    position: absolute;
    z-index: 10;
}

.success-checkmark .icon-line.line-tip {
    top: 46px;
    left: 14px;
    width: 25px;
    transform: rotate(45deg);
    animation: icon-line-tip 0.75s;
}

.success-checkmark .icon-line.line-long {
    top: 38px;
    right: 8px;
    width: 47px;
    transform: rotate(-45deg);
    animation: icon-line-long 0.75s;
}

.success-checkmark .icon-circle {
    top: -2px;
    left: -2px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 2px solid var(--success-color);
    position: absolute;
    z-index: 10;
    animation: icon-circle 0.6s;
}

.success-checkmark .icon-fix {
    top: 8px;
    width: 5px;
    left: 26px;
    z-index: 1;
    height: 85px;
    position: absolute;
    transform: rotate(-45deg);
    background: var(--bg-primary);
}

@keyframes icon-line-tip {
    0% { width: 0; left: 1px; top: 19px; }
    54% { width: 0; left: 1px; top: 19px; }
    70% { width: 50px; left: -8px; top: 37px; }
    84% { width: 17px; left: 21px; top: 48px; }
    100% { width: 25px; left: 14px; top: 45px; }
}

@keyframes icon-line-long {
    0% { width: 0; right: 46px; top: 54px; }
    65% { width: 0; right: 46px; top: 54px; }
    84% { width: 55px; right: 0px; top: 35px; }
    100% { width: 47px; right: 8px; top: 38px; }
}

@keyframes icon-circle {
    0% { top: -2px; left: -2px; width: 0; height: 0; border: 6px solid var(--success-color); }
    50% { top: -2px; left: -2px; width: 0; height: 0; border: 6px solid var(--success-color); }
    100% { top: -2px; left: -2px; width: 80px; height: 80px; border: 2px solid var(--success-color); }
}

@keyframes fill {
    100% { box-shadow: inset 0px 0px 0px 30px var(--success-color); }
}

@keyframes scale {
    0%, 100% { transform: none; }
    50% { transform: scale3d(1.1, 1.1, 1); }
}

.success-content {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.success-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.success-message {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 32px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.success-details {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 32px;
    border: 1px solid var(--border-color);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 14px;
}

.detail-value {
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
    font-size: 14px;
    background: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.success-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: left;
}

.info-icon {
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 4px;
}

.info-text h4 {
    margin: 0 0 8px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.info-text p {
    margin: 0;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
}

.success-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式适配 */
@media (max-width: 768px) {
    .success-container {
        padding: 20px 16px;
    }
    
    .success-checkmark {
        width: 60px;
        height: 60px;
    }
    
    .success-checkmark .check-icon {
        width: 60px;
        height: 60px;
    }
    
    .success-title {
        font-size: 24px;
    }
    
    .success-message {
        font-size: 15px;
    }
    
    .success-info {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .success-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .detail-value {
        align-self: stretch;
        text-align: center;
    }
}

/* ========================================
   Cloudflare DNS操作控制样式
   ======================================== */
.operation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.operation-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

.operation-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.operation-controls .btn {
    font-size: 13px;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.operation-controls .btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.operation-controls .btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.operation-controls .btn-warning:hover {
    background-color: #d69e2e;
}

.operation-controls .btn-success {
    background-color: var(--success-color);
    color: white;
}

.operation-controls .btn-success:hover {
    background-color: #38a169;
}

.operation-controls .btn-secondary {
    background-color: #718096;
    color: white;
}

.operation-controls .btn-secondary:hover {
    background-color: #4a5568;
}

/* ========================================
   操作状态表格优化
   ======================================== */
.operation-status-container .results-table {
    table-layout: fixed;
    width: 100%;
}

.operation-status-container .results-table th,
.operation-status-container .results-table td {
    word-wrap: break-word;
    word-break: break-all;
    vertical-align: middle;
    padding: 8px 12px;
}

/* 表格列宽分配 */
.operation-status-container .results-table th:nth-child(1),
.operation-status-container .results-table td:nth-child(1) {
    width: 8%;
    text-align: center;
}

.operation-status-container .results-table th:nth-child(2),
.operation-status-container .results-table td:nth-child(2) {
    width: 35%;
    font-size: 13px;
    line-height: 1.3;
}

.operation-status-container .results-table th:nth-child(3),
.operation-status-container .results-table td:nth-child(3) {
    width: 15%;
    text-align: center;
}

.operation-status-container .results-table th:nth-child(4),
.operation-status-container .results-table td:nth-child(4) {
    width: 42%;
    font-size: 13px;
    line-height: 1.3;
}

/* 域名列自适应字体大小 */
.operation-status-container .results-table td:nth-child(2) {
    font-family: 'Courier New', monospace;
    position: relative;
}

/* 长域名自动缩小字体 */
.operation-status-container .results-table td:nth-child(2):has-text {
    font-size: clamp(10px, 2vw, 13px);
}

/* 状态列样式优化 */
.operation-status-container .results-table td:nth-child(4) {
    position: relative;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .operation-status-container .results-table th:nth-child(2),
    .operation-status-container .results-table td:nth-child(2) {
        width: 40%;
        font-size: 11px;
    }
    
    .operation-status-container .results-table th:nth-child(4),
    .operation-status-container .results-table td:nth-child(4) {
        width: 37%;
        font-size: 11px;
    }
}

.operation-controls .btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.operation-controls .btn-danger:hover {
    background-color: #e53e3e;
}