:root {
    /* 专业配色 - 无蓝紫色 */
    --primary: #059669; /* Emerald */
    --primary-dark: #047857;
    --primary-light: #10b981;
    --secondary: #4b5563; /* Gray */
    --accent: #ea580c; /* Orange */
    --background: #f9fafb;
    --surface: #ffffff;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 6px 12px -1px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 25px -3px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    /* 动画 */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 应用容器 */
.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
    box-shadow: var(--shadow);
    z-index: 10;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo i {
    font-size: 24px;
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.tagline {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.4;
}

/* 最近查询 */
.recent-queries h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.recent-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: white;
}

.recent-item i {
    font-size: 14px;
    color: var(--text-light);
}

.recent-item:hover i {
    color: white;
}

/* 统计信息 */
.stats {
    margin-top: auto;
    padding: 20px 0;
    border-top: 1px solid var(--border);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.stat-item i {
    font-size: 20px;
    color: var(--primary);
    width: 32px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

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

.sidebar-footer {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-light);
    text-align: center;
}

.version {
    font-family: monospace;
    background: var(--background);
    padding: 2px 6px;
    border-radius: 4px;
    margin-top: 4px;
    display: inline-block;
}

/* 主内容区 */
.main-content {
    padding: 24px 32px;
    overflow-y: auto;
}

/* 搜索面板 */
.search-panel {
    background: var(--surface);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 32px;
}

.search-container {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.search-input-group {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-group i {
    position: absolute;
    left: 16px;
    color: var(--text-light);
    font-size: 18px;
}

#domainInput {
    width: 100%;
    padding: 16px 20px 16px 48px;
    font-size: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--background);
    color: var(--text);
    transition: var(--transition);
}

#domainInput:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.domain-hint {
    position: absolute;
    right: 12px;
    color: var(--text-light);
    font-size: 14px;
    background: var(--background);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    pointer-events: none;
}

.search-button {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
}

.search-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.search-button:active {
    transform: translateY(0);
}

/* 快捷域名 */
.quick-domains {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.quick-label {
    font-size: 14px;
    color: var(--text-light);
}

.quick-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.quick-btn {
    padding: 10px 16px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

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

.quick-btn i {
    font-size: 16px;
}

/* 结果容器 */
.results-container {
    min-height: 500px;
}

.state-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 48px;
    text-align: center;
}

/* 加载状态 */
.loader {
    margin-bottom: 24px;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}

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

.loader-text p {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.loader-text small {
    color: var(--text-light);
    font-size: 14px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 24px;
}

.progress-fill {
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(300%); }
}

/* 错误状态 */
.error-icon {
    font-size: 64px;
    color: var(--error);
    margin-bottom: 24px;
}

.error-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text);
}

.error-content p {
    color: var(--text-light);
    margin-bottom: 24px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.retry-btn {
    padding: 12px 24px;
    background: var(--error);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.retry-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* 成功结果 */
.results {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 域名概览 */
.domain-overview {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    padding: 32px;
    color: white;
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
}

.domain-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
}

.domain-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.domain-title h2 {
    font-size: 28px;
    font-weight: 700;
}

.domain-tld {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.domain-status {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.status-badge {
    background: white;
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.query-time {
    font-size: 13px;
    opacity: 0.9;
}

.domain-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.meta-item i {
    font-size: 20px;
    opacity: 0.9;
}

.meta-item div {
    display: flex;
    flex-direction: column;
}

.meta-item small {
    font-size: 12px;
    opacity: 0.8;
}

.meta-item strong {
    font-size: 16px;
    font-weight: 600;
}

/* 信息卡片 */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.info-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.info-card.full-width {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    background: var(--background);
    border-bottom: 1px solid var(--border);
}

.card-header i {
    font-size: 20px;
    color: var(--primary);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

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

.card-content {
    padding: 20px;
}

/* 信息行 */
.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--text-light);
    font-size: 14px;
}

.info-value {
    font-weight: 600;
    color: var(--text);
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

/* DNS 服务器 */
.dns-servers {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.dns-server {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', monospace;
    font-size: 14px;
}

.dns-server i {
    color: var(--primary);
}

/* 状态网格 */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.status-item {
    padding: 12px 16px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-item i {
    color: var(--success);
}

/* 技术详情 */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tech-label {
    font-size: 13px;
    color: var(--text-light);
}

.tech-value {
    font-weight: 600;
    color: var(--text);
    font-family: 'SF Mono', monospace;
}

.tech-value.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--background);
    border-radius: 20px;
    font-size: 12px;
    font-family: 'Inter', sans-serif;
}

/* 原始数据 */
.raw-data {
    margin-top: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.raw-data pre {
    margin: 0;
    padding: 20px;
    background: #1e1e1e;
    color: #d4d4d4;
    font-family: 'SF Mono', monospace;
    font-size: 13px;
    line-height: 1.6;
    max-height: 400px;
    overflow: auto;
}

/* 操作栏 */
.action-bar {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    padding: 20px;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.action-btn {
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: none;
}

.action-btn.secondary {
    background: var(--background);
    color: var(--text);
    border: 1px solid var(--border);
}

.action-btn.secondary:hover {
    background: var(--surface);
    transform: translateY(-2px);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 通知 */
.notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 16px 20px;
    min-width: 300px;
    max-width: 400px;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.notification-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.notification-text {
    flex: 1;
    font-size: 14px;
}

/* 实用类 */
.hidden {
    display: none !important;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .main-content {
        padding: 16px;
    }
}

@media (max-width: 768px) {
    .search-container {
        flex-direction: column;
    }
    
    .domain-header {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .domain-status {
        align-items: flex-start;
    }
    
    .info-cards {
        grid-template-columns: 1fr;
    }
    
    .action-bar {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
  }