/**
 * 系统设置界面 - 现代化重构样式
 * 精致数据驱动风格 - 专业、清晰、现代
 */

/* ===== 自定义字体 ===== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* ===== CSS 变量 ===== */
.modern-settings-modal {
    --settings-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", sans-serif;
    --settings-bg: #F8FAFC;
    --settings-card-bg: #FFFFFF;
    --settings-border: #E2E8F0;
    --settings-border-light: #F1F5F9;
    --settings-text-primary: #1E293B;
    --settings-text-secondary: #64748B;
    --settings-text-muted: #94A3B8;
    
    /* 主题色 */
    --settings-blue: #3B82F6;
    --settings-blue-light: #EFF6FF;
    --settings-emerald: #10B981;
    --settings-emerald-light: #ECFDF5;
    --settings-amber: #F59E0B;
    --settings-amber-light: #FFFBEB;
    --settings-rose: #F43F5E;
    --settings-rose-light: #FFF1F2;
    --settings-violet: #8B5CF6;
    --settings-violet-light: #F5F3FF;
    
    /* 渐变 */
    --gradient-blue: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
    --gradient-emerald: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-amber: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --gradient-rose: linear-gradient(135deg, #F43F5E 0%, #E11D48 100%);
    --gradient-violet: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 模态框容器 ===== */
.modern-settings-modal {
    font-family: var(--settings-font);
    width: 95%;
    max-width: 960px;
    max-height: 85vh;
    background: var(--settings-card-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0, 0, 0, 0.05);
    animation: settingsModalIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

@keyframes settingsModalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ===== 模态框头部 ===== */
.modern-settings-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    border-bottom: 1px solid var(--settings-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.modern-settings-modal .modal-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    color: var(--settings-text-primary);
    letter-spacing: -0.02em;
}

.modern-settings-modal .modal-title::before {
    content: '';
    display: inline-block;
    width: 32px;
    height: 32px;
    background: var(--gradient-blue);
    border-radius: 10px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M10.343 3.94c.09-.542.56-.94 1.11-.94h1.093c.55 0 1.02.398 1.11.94l.149.894c.07.424.384.764.78.93.398.164.855.142 1.205-.108l.737-.527a1.125 1.125 0 011.45.12l.773.774c.39.389.44 1.002.12 1.45l-.527.737c-.25.35-.272.806-.107 1.204.165.397.505.71.93.78l.893.15c.543.09.94.56.94 1.109v1.094c0 .55-.397 1.02-.94 1.11l-.893.149c-.425.07-.765.383-.93.78-.165.398-.143.854.107 1.204l.527.738c.32.447.269 1.06-.12 1.45l-.774.773a1.125 1.125 0 01-1.449.12l-.738-.527c-.35-.25-.806-.272-1.203-.107-.397.165-.71.505-.781.929l-.149.894c-.09.542-.56.94-1.11.94h-1.094c-.55 0-1.019-.398-1.11-.94l-.148-.894c-.071-.424-.384-.764-.781-.93-.398-.164-.854-.142-1.204.108l-.738.527c-.447.32-1.06.269-1.45-.12l-.773-.774a1.125 1.125 0 01-.12-1.45l.527-.737c.25-.35.273-.806.108-1.204-.165-.397-.505-.71-.93-.78l-.894-.15c-.542-.09-.94-.56-.94-1.109v-1.094c0-.55.398-1.02.94-1.11l.894-.149c.424-.07.765-.383.93-.78.165-.398.143-.854-.107-1.204l-.527-.738a1.125 1.125 0 01.12-1.45l.773-.773a1.125 1.125 0 011.45-.12l.737.527c.35.25.807.272 1.204.107.397-.165.71-.505.78-.929l.15-.894z'/%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M15 12a3 3 0 11-6 0 3 3 0 016 0z'/%3E%3C/svg%3E");
    background-size: 20px 20px;
    background-repeat: no-repeat;
    background-position: center;
}

.modern-settings-modal .close-button {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--settings-bg);
    border-radius: 10px;
    color: var(--settings-text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modern-settings-modal .close-button:hover {
    background: var(--settings-rose-light);
    color: var(--settings-rose);
    transform: rotate(90deg);
}

/* ===== 双栏布局 ===== */
.modern-settings-modal .settings-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ===== 左侧导航 ===== */
.modern-settings-modal .settings-nav {
    width: 220px;
    min-width: 220px;
    background: var(--settings-bg);
    border-right: 1px solid var(--settings-border);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.modern-settings-modal .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    background: transparent;
    text-align: left;
    width: 100%;
    font-family: inherit;
}

.modern-settings-modal .nav-item:hover {
    background: rgba(59, 130, 246, 0.06);
}

.modern-settings-modal .nav-item.active {
    background: var(--settings-card-bg);
    box-shadow: var(--shadow-sm), 0 0 0 1px rgba(59, 130, 246, 0.1);
}

.modern-settings-modal .nav-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: white;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.modern-settings-modal .nav-item:hover .nav-icon {
    transform: scale(1.05);
}

.modern-settings-modal .nav-icon.icon-subjects {
    background: var(--gradient-blue);
}

.modern-settings-modal .nav-icon.icon-total-score {
    background: var(--gradient-emerald);
}

.modern-settings-modal .nav-icon.icon-custom-grade {
    background: var(--gradient-amber);
}

.modern-settings-modal .nav-icon.icon-data-management {
    background: var(--gradient-rose);
}

.modern-settings-modal .nav-icon.icon-version-updates {
    background: var(--gradient-blue);
}

.modern-settings-modal .nav-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.modern-settings-modal .nav-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--settings-text-primary);
    line-height: 1.3;
}

.modern-settings-modal .nav-desc {
    font-size: 11px;
    color: var(--settings-text-muted);
    line-height: 1.3;
}

.modern-settings-modal .nav-item.active .nav-title {
    color: var(--settings-blue);
}

/* ===== 版本更新列表 ===== */
.modern-settings-modal .version-timeline {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 12px;
}

.modern-settings-modal .version-entry {
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--settings-border);
    background: var(--settings-bg);
    box-shadow: var(--shadow-sm);
}

.modern-settings-modal .version-entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.modern-settings-modal .version-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--settings-blue-light);
    color: var(--settings-blue);
    font-weight: 600;
    font-size: 12px;
}

.modern-settings-modal .version-date {
    font-size: 12px;
    color: var(--settings-text-muted);
}

.modern-settings-modal .version-changes {
    margin: 0;
    padding-left: 18px;
    color: var(--settings-text-secondary);
    line-height: 1.6;
    font-size: 13px;
}

/* ===== 右侧内容区 ===== */
.modern-settings-modal .settings-content {
    flex: 1;
    overflow-y: auto;
    background: var(--settings-bg);
}

.modern-settings-modal .settings-panel {
    display: none;
    padding: 24px 28px;
    animation: panelFadeIn 0.3s ease;
}

.modern-settings-modal .settings-panel.active {
    display: block;
}

@keyframes panelFadeIn {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== 面板标题 ===== */
.modern-settings-modal .panel-header {
    margin-bottom: 24px;
}

.modern-settings-modal .panel-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--settings-text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.modern-settings-modal .panel-subtitle {
    font-size: 14px;
    color: var(--settings-text-secondary);
    line-height: 1.5;
}

/* ===== 设置卡片 ===== */
.modern-settings-modal .settings-card {
    background: var(--settings-card-bg);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--settings-border-light);
    transition: box-shadow var(--transition-base);
}

/* 在设置面板内的卡片，使用扁平化设计，避免框套框 */
.modern-settings-modal .settings-panel .settings-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
    margin-bottom: 24px;
    border-radius: 0;
}

.modern-settings-modal .settings-panel .settings-card:hover {
    box-shadow: none;
}

/* 为卡片内的 h4 标题添加轻微背景区分 */
.modern-settings-modal .settings-panel .settings-card h4 {
    background: var(--settings-bg);
    padding: 12px 16px;
    margin: 0 -16px 16px -16px;
    border-radius: 10px;
    border-left: 3px solid transparent;
}

/* 为卡片内容区域添加轻微背景（可选，用于需要视觉分组的场景） */
.modern-settings-modal .settings-panel .settings-card.has-background {
    background: var(--settings-bg);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

/* 保留卡片内的分组样式 */
.modern-settings-modal .settings-panel .settings-card > *:first-child {
    margin-top: 0;
}

.modern-settings-modal .settings-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--settings-text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--settings-border-light);
}

.modern-settings-modal .settings-card h4 .card-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: white;
}

/* ===== 提示框样式 ===== */
.modern-settings-modal .info-box {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-size: 13px;
    line-height: 1.6;
}

.modern-settings-modal .info-box.info-blue {
    background: var(--settings-blue-light);
    border-left: 3px solid var(--settings-blue);
    color: #1E40AF;
}

.modern-settings-modal .info-box.info-amber {
    background: var(--settings-amber-light);
    border-left: 3px solid var(--settings-amber);
    color: #92400E;
}

.modern-settings-modal .info-box.info-emerald {
    background: var(--settings-emerald-light);
    border-left: 3px solid var(--settings-emerald);
    color: #065F46;
}

.modern-settings-modal .info-box.info-rose {
    background: var(--settings-rose-light);
    border-left: 3px solid var(--settings-rose);
    color: #9F1239;
}

.modern-settings-modal .info-box-icon {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ===== 按钮样式 ===== */
.modern-settings-modal .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    outline: none;
}

.modern-settings-modal .btn-primary {
    background: var(--gradient-blue);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.modern-settings-modal .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.modern-settings-modal .btn-secondary {
    background: var(--settings-bg);
    color: var(--settings-text-primary);
    border: 1px solid var(--settings-border);
}

.modern-settings-modal .btn-secondary:hover {
    background: var(--settings-card-bg);
    border-color: var(--settings-blue);
    color: var(--settings-blue);
}

.modern-settings-modal .btn-success {
    background: var(--gradient-emerald);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.modern-settings-modal .btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.modern-settings-modal .btn-danger {
    background: var(--gradient-rose);
    color: white;
    box-shadow: 0 2px 8px rgba(244, 63, 94, 0.3);
}

.modern-settings-modal .btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(244, 63, 94, 0.4);
}

.modern-settings-modal .btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ===== 表单元素 ===== */
.modern-settings-modal .form-input {
    padding: 10px 14px;
    border: 1px solid var(--settings-border);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    color: var(--settings-text-primary);
    background: var(--settings-card-bg);
    transition: all var(--transition-base);
    outline: none;
}

.modern-settings-modal .form-input:focus {
    border-color: var(--settings-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.modern-settings-modal .form-input:hover:not(:focus) {
    border-color: var(--settings-text-muted);
}

.modern-settings-modal .form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--settings-border-light);
}

.modern-settings-modal .form-row:last-child {
    border-bottom: none;
}

.modern-settings-modal .form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--settings-text-primary);
}

.modern-settings-modal .form-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.modern-settings-modal .form-input-group .form-input {
    width: 80px;
    text-align: center;
}

.modern-settings-modal .form-suffix {
    font-size: 13px;
    color: var(--settings-text-secondary);
    font-weight: 500;
}

/* ===== 单选按钮组 ===== */
.modern-settings-modal .radio-group {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.modern-settings-modal .radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.modern-settings-modal .radio-item input[type="radio"] {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    accent-color: var(--settings-blue);
}

.modern-settings-modal .radio-item span {
    font-size: 14px;
    color: var(--settings-text-primary);
}

/* ===== 学科设置列表 ===== */
.modern-settings-modal #subjectSettingsList {
    min-height: 60px;
    border: 2px dashed var(--settings-border);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 16px;
    background: var(--settings-bg);
    transition: all var(--transition-base);
}

.modern-settings-modal #subjectSettingsList:empty::after {
    content: '暂无学科设置，请点击下方按钮添加';
    display: block;
    text-align: center;
    color: var(--settings-text-muted);
    font-size: 13px;
    padding: 20px;
}

/* ===== 数据管理列表 ===== */
.modern-settings-modal #dataManagementList {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--settings-border-light);
    border-radius: 12px;
    background: var(--settings-bg);
}

.modern-settings-modal #dataManagementList::-webkit-scrollbar {
    width: 6px;
}

.modern-settings-modal #dataManagementList::-webkit-scrollbar-track {
    background: transparent;
}

.modern-settings-modal #dataManagementList::-webkit-scrollbar-thumb {
    background: var(--settings-border);
    border-radius: 3px;
}

.modern-settings-modal #dataManagementList::-webkit-scrollbar-thumb:hover {
    background: var(--settings-text-muted);
}

/* ===== 等级模式选择 ===== */
.modern-settings-modal .grade-mode-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modern-settings-modal .grade-mode-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--settings-bg);
    border-radius: 12px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modern-settings-modal .grade-mode-option:hover {
    background: var(--settings-card-bg);
    border-color: var(--settings-border);
}

.modern-settings-modal .grade-mode-option:has(input:checked) {
    background: var(--settings-blue-light);
    border-color: var(--settings-blue);
}

.modern-settings-modal .grade-mode-option input[type="radio"] {
    margin-top: 2px;
    accent-color: var(--settings-blue);
}

.modern-settings-modal .grade-mode-option label {
    cursor: pointer;
}

.modern-settings-modal .grade-mode-option label strong {
    display: block;
    font-size: 14px;
    color: var(--settings-text-primary);
    margin-bottom: 4px;
}

.modern-settings-modal .mode-desc {
    font-size: 12px;
    color: var(--settings-text-secondary);
}

/* ===== 模板选择 ===== */
.modern-settings-modal .template-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.modern-settings-modal .template-option {
    padding: 14px 16px;
    background: var(--settings-bg);
    border-radius: 12px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modern-settings-modal .template-option:hover {
    background: var(--settings-card-bg);
    border-color: var(--settings-border);
    transform: translateY(-2px);
}

.modern-settings-modal .template-option.selected {
    background: var(--settings-violet-light);
    border-color: var(--settings-violet);
}

.modern-settings-modal .template-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.modern-settings-modal .template-icon {
    font-size: 18px;
}

.modern-settings-modal .template-header strong {
    font-size: 13px;
    color: var(--settings-text-primary);
}

.modern-settings-modal .template-preview {
    font-size: 11px;
    color: var(--settings-text-muted);
    line-height: 1.4;
}

/* ===== 底部操作栏 ===== */
.modern-settings-modal .settings-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: var(--settings-card-bg);
    border-top: 1px solid var(--settings-border);
}

.modern-settings-modal .footer-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.modern-settings-modal .footer-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modern-settings-modal .danger-zone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--settings-text-muted);
}

.modern-settings-modal .danger-zone button {
    padding: 8px 14px;
    font-size: 12px;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .modern-settings-modal {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }
    
    .modern-settings-modal .settings-layout {
        flex-direction: column;
    }
    
    .modern-settings-modal .settings-nav {
        width: 100%;
        min-width: unset;
        flex-direction: row;
        overflow-x: auto;
        padding: 12px;
        gap: 8px;
        border-right: none;
        border-bottom: 1px solid var(--settings-border);
    }
    
    .modern-settings-modal .nav-item {
        flex-direction: column;
        padding: 10px 16px;
        min-width: fit-content;
    }
    
    .modern-settings-modal .nav-text {
        align-items: center;
        text-align: center;
    }
    
    .modern-settings-modal .nav-desc {
        display: none;
    }
    
    .modern-settings-modal .template-options {
        grid-template-columns: 1fr;
    }
    
    .modern-settings-modal .settings-footer {
        flex-direction: column;
        gap: 16px;
    }
    
    .modern-settings-modal .footer-left,
    .modern-settings-modal .footer-right {
        width: 100%;
        justify-content: center;
    }
}

/* ===== 滚动条美化 ===== */
.modern-settings-modal .settings-content::-webkit-scrollbar,
.modern-settings-modal .settings-nav::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.modern-settings-modal .settings-content::-webkit-scrollbar-track,
.modern-settings-modal .settings-nav::-webkit-scrollbar-track {
    background: transparent;
}

.modern-settings-modal .settings-content::-webkit-scrollbar-thumb,
.modern-settings-modal .settings-nav::-webkit-scrollbar-thumb {
    background: var(--settings-border);
    border-radius: 3px;
}

.modern-settings-modal .settings-content::-webkit-scrollbar-thumb:hover,
.modern-settings-modal .settings-nav::-webkit-scrollbar-thumb:hover {
    background: var(--settings-text-muted);
}

/* ===== 预览区域 ===== */
.modern-settings-modal .preview-box {
    background: linear-gradient(135deg, var(--settings-blue-light) 0%, #E0E7FF 100%);
    border-radius: 12px;
    padding: 16px 20px;
    margin-top: 16px;
}

.modern-settings-modal .preview-box h5 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--settings-blue);
    margin-bottom: 12px;
}

.modern-settings-modal .preview-content {
    font-size: 13px;
    color: var(--settings-text-primary);
    line-height: 1.8;
}

/* ===== 设置分割线 ===== */
.modern-settings-modal .settings-divider {
    height: 1px;
    background: var(--settings-border-light);
    margin: 20px 0;
}

/* ===== 输入模式切换标签 ===== */
.modern-settings-modal .mode-tabs {
    display: inline-flex;
    background: var(--settings-bg);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
    margin-bottom: 16px;
}

.modern-settings-modal .mode-tab {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    background: transparent;
    color: var(--settings-text-secondary);
    font-family: inherit;
}

.modern-settings-modal .mode-tab:hover {
    color: var(--settings-text-primary);
}

.modern-settings-modal .mode-tab.active {
    background: var(--settings-card-bg);
    color: var(--settings-blue);
    box-shadow: var(--shadow-sm);
}

/* ===== 激活码信息面板样式 ===== */
.modern-settings-modal .license-info-item {
    display: flex;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--settings-border-light);
}

.modern-settings-modal .license-info-item:last-child {
    border-bottom: none;
}

.modern-settings-modal .license-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--settings-text-secondary);
    min-width: 120px;
    flex-shrink: 0;
}

.modern-settings-modal .license-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--settings-text-primary);
}

.modern-settings-modal .license-value.status-active {
    color: var(--settings-emerald);
}

.modern-settings-modal .license-value.status-inactive {
    color: var(--settings-rose);
}

.modern-settings-modal .license-code-container {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.modern-settings-modal .license-code-display {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 15px;
    font-weight: 600;
    color: var(--settings-amber);
    background: linear-gradient(135deg, #FEF3C7, #FDE68A);
    padding: 10px 16px;
    border-radius: 8px;
    letter-spacing: 1px;
    border: 1px solid #F59E0B;
    user-select: all;
}

.modern-settings-modal .btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
}

.modern-settings-modal .icon-license {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}