/* ==================== 全局样式 ==================== */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;

    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-hover: #f1f5f9;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: var(--spacing-lg);
}

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

/* ==================== 页头 ==================== */
.site-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: white;
}

.header-content {
    animation: fadeInDown 0.6s ease-out;
}

.site-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    width: 48px;
    height: 48px;
}

.site-description {
    font-size: 1.125rem;
    opacity: 0.95;
}

/* ==================== 向导容器 ==================== */
.wizard-container {
    background: var(--bg-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== 步骤指示器 ==================== */
.step-indicator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    padding: 0 var(--spacing-md);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 0 0 auto;
    transition: all 0.3s ease;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.step-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    transition: color 0.3s ease;
}

.step.active .step-number {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.step.active .step-label {
    color: var(--primary-color);
    font-weight: 600;
}

.step.completed .step-number {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.step.completed .step-label {
    color: var(--success-color);
}

.step-line {
    flex: 1;
    height: 2px;
    background: var(--border-color);
    margin: 0 var(--spacing-sm);
    position: relative;
    top: -10px;
}

.step.completed + .step-line {
    background: var(--success-color);
}

/* ==================== 步骤内容 ==================== */
.step-content {
    animation: fadeIn 0.4s ease-out;
}

.step-card {
    max-width: 800px;
    margin: 0 auto;
}

.step-card h2 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.step-description {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.domain-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.domain-input-wrapper .form-input {
    flex: 1;
}

.history-toggle-btn {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.history-toggle-btn:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.history-toggle-btn svg {
    width: 20px;
    height: 20px;
}

.domain-history {
    margin-top: var(--spacing-xs);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    max-height: 250px;
    overflow-y: auto;
    animation: fadeIn 0.2s ease-out;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 1;
}

.history-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.clear-history-btn {
    padding: 4px var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--danger-color);
    border-radius: 4px;
    color: var(--danger-color);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.history-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.history-list li {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
}

.history-list li:last-child {
    border-bottom: none;
}

.history-list li:hover {
    background: var(--bg-hover);
}

.history-item-domain {
    flex: 1;
    font-family: 'Courier New', Courier, monospace;
}

.history-item-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: var(--spacing-sm);
}

.history-item-delete {
    margin-left: var(--spacing-sm);
    padding: 4px 8px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.history-item-delete:hover {
    background: var(--danger-color);
    color: white;
}

.history-empty {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ==================== 信息框 ==================== */
.info-box,
.ca-info-box,
.success-box {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
}

.info-box {
    background: #eff6ff;
    border-left: 4px solid var(--info-color);
    display: flex;
    gap: var(--spacing-md);
}

.ca-info-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.ca-info-box h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.ca-info-box ul {
    list-style: none;
    padding-left: 0;
}

.ca-info-box li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.ca-info-box li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 600;
}

.success-box {
    background: #f0fdf4;
    border: 2px solid var(--success-color);
    text-align: center;
}

.success-icon {
    color: var(--success-color);
    margin-bottom: var(--spacing-md);
}

.info-icon {
    color: var(--info-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.info-content strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* ==================== 验证方式选项 ==================== */
.verification-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.verification-option {
    position: relative;
}

.verification-option input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.verification-option label {
    display: block;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.verification-option input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.verification-option label:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.option-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.option-icon {
    color: var(--primary-color);
}

.option-title {
    font-weight: 600;
    font-size: 1.0625rem;
}

.option-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.option-suitable {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ==================== 验证方式详情 ==================== */
.verification-details {
    margin-top: var(--spacing-xl);
}

.verification-method {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.verification-method h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.verification-method h4 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.verification-method .icon {
    color: var(--primary-color);
}

.method-description {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.method-steps ol {
    padding-left: 1.5rem;
}

.method-steps li {
    margin-bottom: var(--spacing-lg);
}

.method-steps strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.method-steps pre {
    background: var(--text-primary);
    color: #e2e8f0;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: var(--spacing-sm) 0;
}

.method-steps code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
}

.dns-record-info table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.dns-record-info td {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.dns-record-info code {
    background: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875rem;
}

.method-notes ul {
    list-style: none;
    padding-left: 0;
}

.method-notes li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.method-notes li:before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: var(--warning-color);
}

.dns-provider-guides {
    margin-top: var(--spacing-lg);
}

.provider-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.provider-links a {
    padding: var(--spacing-xs) var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.2s ease;
}

.provider-links a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ==================== 验证清单 ==================== */
.verification-checklist {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
}

.verification-checklist h3 {
    margin-bottom: var(--spacing-md);
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.checklist-item input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checklist-item label {
    cursor: pointer;
    flex: 1;
}

/* ==================== 证书格式选项 ==================== */
.cert-format-options {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.cert-format-option {
    position: relative;
}

.cert-format-option input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.cert-format-option label {
    display: block;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.cert-format-option input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.cert-format-option label:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.format-header {
    margin-bottom: var(--spacing-sm);
}

.format-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.format-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.format-files ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--spacing-xs);
}

.format-files li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

.format-files code {
    background: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--primary-color);
}

/* ==================== 安装指南 ==================== */
.installation-guide {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.installation-guide h2,
.installation-guide h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.installation-guide h2:first-child,
.installation-guide h3:first-child {
    margin-top: 0;
}

.installation-guide pre {
    background: var(--text-primary);
    color: #e2e8f0;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.installation-guide code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
}

.installation-guide p code {
    background: white;
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 4px;
}

/* ==================== 按钮 ==================== */
.button-group {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-2xl);
}

.btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ==================== 页脚 ==================== */
.site-footer {
    margin-top: var(--spacing-2xl);
    text-align: center;
    color: white;
    opacity: 0.9;
}

.footer-content p {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 var(--spacing-sm);
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-note {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .site-title {
        font-size: 1.875rem;
    }

    .site-description {
        font-size: 1rem;
    }

    .wizard-container {
        padding: var(--spacing-lg);
    }

    .step-indicator {
        padding: 0;
        overflow-x: auto;
    }

    .step {
        flex: 0 0 auto;
    }

    .step-label {
        font-size: 0.75rem;
    }

    .step-number {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }

    .step-card h2 {
        font-size: 1.5rem;
    }

    .verification-options {
        grid-template-columns: 1fr;
    }

    .button-group {
        flex-direction: column-reverse;
    }

    .btn {
        width: 100%;
    }

    .method-steps pre {
        font-size: 0.75rem;
    }

    .provider-links {
        flex-direction: column;
    }

    .provider-links a {
        text-align: center;
    }

    /* 域名历史记录移动端优化 */
    .domain-input-wrapper {
        gap: 4px;
    }

    .history-toggle-btn {
        width: 40px;
        height: 40px;
    }

    .domain-history {
        max-height: 200px;
    }

    .history-item-time {
        display: none;
    }

    .history-item-domain {
        font-size: 0.875rem;
    }

    /* DNS 服务商选择移动端优化 */
    .dns-provider-options {
        grid-template-columns: 1fr;
    }

    .dns-provider-option {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .provider-name {
        font-size: 0.875rem;
    }

    .provider-desc {
        font-size: 0.6875rem;
    }
}

@media (max-width: 480px) {
    .site-title {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .step-line {
        min-width: 20px;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .site-footer,
    .button-group {
        display: none;
    }

    .wizard-container {
        box-shadow: none;
    }
}

/* ==================== 辅助类 ==================== */
.domain-placeholder {
    color: var(--primary-color);
    font-weight: 600;
}

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

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* ==================== 验证相关样式 ==================== */

/* DNS 服务商选择 */
.dns-provider-selection {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
    border: 1px solid var(--border-color);
}

.dns-provider-selection h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.dns-provider-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.dns-provider-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.dns-provider-option:hover {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.dns-provider-option input[type="radio"] {
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

.dns-provider-option input[type="radio"]:checked {
    accent-color: var(--primary-color);
}

.dns-provider-option:has(input[type="radio"]:checked) {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.provider-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.provider-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.provider-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 验证信息摘要 */
.verification-summary {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.verification-summary h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.summary-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.summary-item strong {
    display: inline-block;
    min-width: 100px;
    color: var(--text-primary);
}

/* DNS 记录添加说明框 */
.dns-instruction-box {
    background: #fef3c7;
    border: 2px solid #f59e0b;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.dns-instruction-box h4 {
    margin-bottom: var(--spacing-md);
    color: #92400e;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.dns-instruction-box p {
    margin-bottom: var(--spacing-md);
    color: #78350f;
}

.dns-instruction-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.dns-instruction-table tr {
    border-bottom: 1px solid #fde68a;
}

.dns-instruction-table tr:last-child {
    border-bottom: none;
}

.dns-instruction-table td {
    padding: var(--spacing-sm) var(--spacing-md);
}

.dns-instruction-table td.label {
    font-weight: 600;
    color: #92400e;
    width: 120px;
    white-space: nowrap;
}

.dns-instruction-table td.value {
    color: #78350f;
}

.dns-instruction-table code {
    background: #fef3c7;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.9375rem;
    color: #92400e;
    font-weight: 600;
    word-break: break-all;
}

.dns-instruction-note {
    font-size: 0.875rem;
    color: #78350f;
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
    margin-bottom: 0;
}

.dns-instruction-note code {
    background: #fef3c7;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8125rem;
}

/* 验证状态显示 */
.verification-status {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.status-icon {
    margin-bottom: var(--spacing-md);
}

.status-loading {
    color: var(--info-color);
}

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

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

.verification-status h3 {
    margin-bottom: var(--spacing-sm);
}

/* 旋转动画 */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.rotating {
    animation: rotate 1s linear infinite;
}

/* 验证详情框 */
.verification-details-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.verification-details-box h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* 验证日志 */
.verification-log {
    background: var(--text-primary);
    color: #e2e8f0;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    max-height: 300px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
}

.log-entry {
    padding: var(--spacing-xs) 0;
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.log-time {
    color: #94a3b8;
    flex-shrink: 0;
}

.log-icon {
    flex-shrink: 0;
    font-weight: bold;
}

.log-message {
    flex: 1;
    word-break: break-word;
    white-space: pre-wrap;
}

.log-success .log-icon {
    color: var(--success-color);
}

.log-error .log-icon {
    color: var(--danger-color);
}

.log-warning .log-icon {
    color: var(--warning-color);
}

.log-info .log-icon {
    color: var(--info-color);
}

/* 验证结果状态框 */
.status-pending,
.status-loading,
.status-success,
.status-error {
    animation: fadeIn 0.3s ease-out;
}

/* info-box 中的 note 样式 */
.info-box .note {
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--text-secondary);
}

/* 验证目标容器 */
#verification-target-container {
    word-break: break-all;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .verification-log {
        font-size: 0.75rem;
        max-height: 200px;
    }
    
    .log-entry {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .summary-item strong {
        display: block;
        margin-bottom: var(--spacing-xs);
    }
}

/* ==================== Nginx 完整配置示例样式 ==================== */

/* 帮助按钮 */
.help-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    padding: 0;
    margin-left: var(--spacing-xs);
    background: var(--info-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    vertical-align: middle;
}

.help-toggle-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.help-toggle-btn.active {
    background: var(--primary-hover);
}

.help-toggle-btn svg {
    width: 12px;
    height: 12px;
}

/* Nginx 示例容器 */
.nginx-examples-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: #fefce8;
    border: 2px solid var(--warning-color);
    border-radius: var(--border-radius);
    animation: fadeIn 0.3s ease-out;
}

.nginx-examples-container .example-header {
    margin-bottom: var(--spacing-lg);
}

.nginx-examples-container .example-header h5 {
    color: #92400e;
    font-size: 1.125rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* 示例区块 */
.example-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.example-section:last-child {
    margin-bottom: 0;
}

.example-section h6 {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-primary);
    font-size: 1rem;
}

.example-section.example-important {
    border: 2px solid var(--warning-color);
    background: #fffbeb;
}

.example-section.example-important h6 {
    color: #92400e;
}

.example-note {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-left: 3px solid var(--info-color);
    border-radius: 4px;
}

.example-note.error {
    background: #fef2f2;
    border-left-color: var(--danger-color);
    color: #991b1b;
}

/* 错误配置 */
.example-wrong {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: #fef2f2;
    border-left: 4px solid var(--danger-color);
    border-radius: 4px;
}

.example-wrong p {
    margin: 0 0 var(--spacing-sm) 0;
    color: #991b1b;
    font-weight: 600;
}

.example-wrong pre {
    margin: var(--spacing-sm) 0 0 0;
}

/* 正确配置 */
.example-correct {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: #f0fdf4;
    border-left: 4px solid var(--success-color);
    border-radius: 4px;
}

.example-correct p {
    margin: 0 0 var(--spacing-sm) 0;
    color: #065f46;
    font-weight: 600;
}

.example-correct pre {
    margin: var(--spacing-sm) 0 0 0;
}

/* 配置说明 */
.example-tips {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: #eff6ff;
    border-left: 4px solid var(--info-color);
    border-radius: 4px;
}

.example-tips p {
    margin: 0 0 var(--spacing-sm) 0;
    color: #1e40af;
    font-weight: 600;
}

.example-tips ul {
    margin: 0;
    padding-left: var(--spacing-lg);
    list-style: disc;
}

.example-tips li {
    margin-bottom: var(--spacing-xs);
    color: #1e3a8a;
}

.example-tips li:last-child {
    margin-bottom: 0;
}

.example-tips code {
    background: white;
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary-color);
    font-size: 0.875rem;
}

/* 验证配置区块 */
.example-verify {
    margin: var(--spacing-md) 0 0 0;
    padding: var(--spacing-md);
    background: #faf5ff;
    border-left: 4px solid #7c3aed;
    border-radius: 4px;
}

.example-verify p {
    margin: 0 0 var(--spacing-sm) 0;
    color: #5b21b6;
    font-weight: 600;
}

.example-verify pre {
    margin: var(--spacing-sm) 0 0 0;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .nginx-examples-container {
        padding: var(--spacing-md);
    }

    .example-section {
        padding: var(--spacing-md);
    }

    .example-section pre {
        font-size: 0.75rem;
    }
}

/* ==================== SSL证书信息显示 ==================== */
.ssl-cert-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--border-radius);
    color: white;
    animation: fadeIn 0.3s ease-out;
}

.cert-info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.cert-info-header svg {
    flex-shrink: 0;
}

.cert-info-title {
    font-size: 1.0625rem;
    font-weight: 600;
    flex: 1;
}

.cert-info-badge {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.cert-info-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.cert-info-note {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    line-height: 1.5;
    border-left: 3px solid rgba(255, 255, 255, 0.4);
}

.cert-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
}

.cert-label {
    font-weight: 500;
    opacity: 0.9;
}

.cert-value {
    font-weight: 600;
    font-family: 'Courier New', Courier, monospace;
}

.cert-days.cert-success {
    color: #86efac;
}

.cert-days.cert-warning {
    color: #fcd34d;
}

.cert-days.cert-danger {
    color: #fca5a5;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@media (max-width: 768px) {
    .cert-info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

/* ==================== 证书下载区域 ==================== */
.cert-download-box {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
    border: 2px solid var(--border-color);
}

.cert-download-box h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.cert-download-box h3 svg {
    color: var(--primary-color);
}

.download-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.cert-files-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.cert-file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.cert-file-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.cert-file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.cert-file-icon {
    flex-shrink: 0;
    color: var(--primary-color);
}

.cert-file-details {
    flex: 1;
}

.cert-file-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-family: 'Courier New', Courier, monospace;
}

.cert-file-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.btn-download {
    flex-shrink: 0;
    min-width: 80px;
}

.download-all-section {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
}

.btn-download-all {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
}

.btn-download-all:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-download-all:disabled:hover {
    background: var(--secondary-color);
    transform: none;
}

.btn-download-all svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .cert-file-item {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .cert-file-info {
        width: 100%;
    }

    .btn-download {
        width: 100%;
    }

    .btn-download-all {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== 复制按钮样式 ==================== */
.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

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

.copy-btn:active {
    transform: scale(0.95);
}

.copy-btn svg {
    flex-shrink: 0;
}

/* 确保代码块有足够的右边距 */
.copy-btn + pre,
pre:has(+ .copy-btn) {
    padding-right: 100px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .copy-btn {
        position: static;
        margin-top: 8px;
        width: 100%;
        justify-content: center;
    }

    .copy-btn + pre,
    pre:has(+ .copy-btn) {
        padding-right: 16px;
    }
}