/**
 * =============================================================================
 * LittleAIBox 政策页面样式
 * =============================================================================
 */

:root {
    color-scheme: light;

    /* 浅色主题配色 - 与主应用一致 */
    --accent-color: #1a73e8;
    --bg-color: #fff;
    --sidebar-bg: #f7f7f8;
    --text-color: #333;
    --text-secondary: #666;
    --border-color: #e0e0e0;
    --hover-bg: #e8f0fe;
    --card-bg: #fff;
    --header-bg: rgba(255, 255, 255, 0.95);
    --shadow: 0 2px 8px rgba(159, 150, 150, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);

    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* 暗黑主题 - 与主应用一致 */
html[data-theme='dark'] {
    color-scheme: dark;

    --accent-color: #3b82f6;
    --bg-color: #1e1e1e;
    --sidebar-bg: #2a2a2e;
    --text-color: #e2e2e2;
    --text-secondary: #a0a0a0;
    --border-color: #3c3c3c;
    --hover-bg: #3a3a3a;
    --card-bg: #252528;
    --header-bg: rgba(42, 42, 46, 0.95);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.3);
}


/**
 * =============================================================================
 * 全局样式
 * =============================================================================
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}

html[data-theme='dark'] ::-webkit-scrollbar-thumb {
    background-color: #6b6b6b;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.3);
}

html[data-theme='dark'] ::-webkit-scrollbar-thumb:hover {
    background-color: #8e8e8e;
}


/**
 * =============================================================================
 * 顶部导航栏
 * =============================================================================
 */

.policy-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.6rem 0;
    box-shadow: var(--shadow);
}

.header-container {
    max-width: none;
    margin: 0;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-logo h1 {
    font-size: 1.6rem;
    font-weight: 600;
    font-family: 'Space Grotesk', var(--font-family);
    letter-spacing: 0.2px;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.header-logo a {
    text-decoration: none;
    color: inherit;
}

.header-logo h1:hover {
    color: var(--accent-color);
}

.header-nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after {
    width: 100%;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    padding: 0.6rem 1.5rem;
    border-radius: 24px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

html[data-theme='dark'] .btn-primary {
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

html[data-theme='dark'] .btn-primary:hover {
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.mobile-menu-btn:hover {
    background-color: var(--hover-bg);
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

.policy-theme-indicator {
    cursor: pointer;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: background-color 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.policy-theme-indicator .theme-icon {
    width: 18px;
    height: 18px;
}

.policy-theme-indicator:hover {
    background-color: var(--hover-bg);
}

.policy-theme-indicator:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.policy-theme-indicator .theme-icon-moon {
    display: none;
}

html[data-theme='dark'] .policy-theme-indicator .theme-icon-sun {
    display: none;
}

html[data-theme='dark'] .policy-theme-indicator .theme-icon-moon {
    display: block;
}

html[data-theme='dark'] .policy-theme-indicator {
    color: #f5c451;
}


/**
 * =============================================================================
 * 移动端菜单
 * =============================================================================
 */

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 80%;
    max-width: 320px;
    background: var(--bg-color);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.mobile-menu.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.mobile-menu-close {
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.mobile-menu-close:hover {
    background-color: var(--hover-bg);
}

.mobile-menu-close svg {
    width: 24px;
    height: 24px;
}

.mobile-menu-nav {
    padding: 1rem;
}

.mobile-nav-link {
    display: block;
    padding: 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    border-radius: 12px;
    transition: background-color 0.3s ease;
    margin-bottom: 0.5rem;
}

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


/**
 * =============================================================================
 * 主内容区域
 * =============================================================================
 */

.policy-main {
    flex: 1;
    padding: 3rem 0;
}

.policy-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
    margin-left: 400px;
    padding-right: 2rem;
}


/**
 * =============================================================================
 * 侧边栏导航
 * =============================================================================
 */

.policy-sidebar {
    position: fixed;
    left: 0;
    top: 100px;
    bottom: 2rem;
    width: 360px;
    background: var(--sidebar-bg);
    box-shadow: var(--shadow);
    border-right: 1px solid var(--border-color);
    border-radius: 0 16px 16px 0;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    padding-top: 2rem;
    padding-bottom: 2rem;
    overflow-y: auto;
    z-index: 100;
}

html[data-theme='dark'] .policy-sidebar {
    background: var(--sidebar-bg);
    border-right-color: var(--border-color);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.sidebar-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    padding: 0 0.75rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
}

.sidebar-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

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

.sidebar-link:hover svg {
    opacity: 1;
}

.sidebar-link.active {
    background-color: var(--accent-color);
    color: white;
}

.sidebar-link.active svg {
    opacity: 1;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.policy-language {
    position: relative;
    margin-bottom: 1rem;
}

.policy-language-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.policy-language-toggle svg {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.policy-language-toggle:hover {
    background-color: var(--hover-bg);
}

.policy-language-current {
    margin-left: auto;
    font-weight: 600;
    color: var(--text-color);
}

.policy-language-menu {
    position: absolute;
    left: 0;
    right: 0;
    bottom: calc(100% + 8px);
    display: none;
    padding: 0.4rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    z-index: 5;
}

.policy-language.open .policy-language-menu {
    display: block;
}

.policy-language-option {
    width: 100%;
    text-align: left;
    padding: 0.55rem 0.6rem;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.policy-language-option:hover,
.policy-language-option[aria-checked="true"] {
    background-color: var(--hover-bg);
    color: var(--accent-color);
}

.sidebar-contact {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.sidebar-email {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
    word-break: break-word;
    margin-bottom: 1rem;
}

.sidebar-email:hover {
    background-color: var(--hover-bg);
}

.sidebar-email svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.sidebar-copyright {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
    text-align: center;
    margin-top: 0.5rem;
    line-height: 1.4;
}


/**
 * =============================================================================
 * 政策内容区域
 * =============================================================================
 */

.policy-content {
    min-width: 0;
    position: fixed;
    top: 100px;
    bottom: 2rem;
    right: 2rem;
    left: 400px;
    overflow-y: auto;
    padding-right: 1rem;
}

.policy-section {
    display: none;
    animation: fadeIn 0.4s ease;
}

.policy-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 2rem;
    text-align: center;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.section-date {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.section-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

html[data-theme='dark'] .section-content {
    background: var(--sidebar-bg);
}

/* 政策内容样式 */
.section-content h2,
.section-content h3,
.section-content h4 {
    color: var(--text-color);
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.section-content h2 {
    font-size: 1.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.section-content h3 {
    font-size: 1.5rem;
}

.section-content h4 {
    font-size: 1.25rem;
}

.section-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.section-content ul,
.section-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.section-content li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.8;
}

.section-content strong {
    color: var(--text-color);
    font-weight: 600;
}

.section-content a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.section-content a:hover {
    border-bottom-color: var(--accent-color);
}

html[data-theme='dark'] .section-content a {
    color: #4db6ac;
}

html[data-theme='dark'] .section-content a:hover {
    border-bottom-color: #4db6ac;
    color: #26a69a;
}

/**
 * =============================================================================
 * 隐私协议内容复用样式
 * =============================================================================
 */

.policy-content .privacy-policy-content h2 {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: #111;
    margin-top: 0;
    margin-bottom: 16px;
}

.policy-content .privacy-policy-content h2+p {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px dashed #ccc;
}

.policy-content .privacy-policy-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: #111;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-top: 32px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.policy-content .privacy-policy-content>h3:first-of-type {
    margin-top: 0;
}

.policy-content .privacy-policy-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 24px;
    margin-bottom: 8px;
}

.policy-content .privacy-policy-content p {
    margin-bottom: 1.2em;
    color: #444;
}

.policy-content .privacy-policy-content strong {
    color: #111 !important;
    font-weight: 700 !important;
}

.policy-content .privacy-policy-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}

.policy-content .privacy-policy-content li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: #444;
}

.policy-content .privacy-policy-content li::before {
    content: '•';
    position: absolute;
    left: 4px;
    top: -1px;
    color: var(--accent-color);
    font-size: 20px;
    font-weight: bold;
}

.policy-content .privacy-policy-content a {
    color: #26A69A;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

.policy-content .privacy-policy-content a:hover {
    border-bottom-color: #26A69A;
    color: #1e8577;
}

.policy-content .privacy-policy-content a:hover strong {
    color: #1e8577 !important;
}

.policy-content .privacy-policy-content a strong {
    color: #26A69A !important;
    font-weight: 700;
    text-decoration: none;
}

.policy-content .privacy-policy-content a[href^="mailto:"] {
    color: #26A69A;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease-in-out;
}

.policy-content .privacy-policy-content a[href^="mailto:"]:hover {
    border-bottom: 1px solid #26A69A;
    color: #1e7e72;
}

html[data-theme='dark'] .policy-content .privacy-policy-content h2 {
    text-align: center;
    color: var(--text-color) !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content h2+p {
    text-align: center;
    color: var(--text-secondary) !important;
    border-bottom-color: var(--border-color);
}

html[data-theme='dark'] .policy-content .privacy-policy-content p,
html[data-theme='dark'] .policy-content .privacy-policy-content li {
    color: var(--text-secondary);
}

html[data-theme='dark'] .policy-content .privacy-policy-content h3,
html[data-theme='dark'] .policy-content .privacy-policy-content h4,
html[data-theme='dark'] .policy-content .privacy-policy-content strong {
    color: var(--text-color) !important;
    font-weight: 700 !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a {
    color: #4db6ac !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a:hover {
    border-bottom-color: #4db6ac;
    color: #26a69a !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a:hover strong {
    color: #26a69a !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a strong {
    color: #4db6ac !important;
    font-weight: 700;
    text-decoration: none;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a[href^="mailto:"] {
    color: #4db6ac !important;
}

html[data-theme='dark'] .policy-content .privacy-policy-content a[href^="mailto:"]:hover {
    border-bottom-color: #4db6ac;
    color: #26a69a !important;
}


/**
 * =============================================================================
 * 响应式设计
 * =============================================================================
 */

/* 平板设备 */
@media (max-width: 1024px) {
    .policy-sidebar {
        width: 300px;
        padding: 1.5rem;
    }

    .policy-container {
        margin-left: 340px;
        padding-right: 1.5rem;
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-menu {
        display: block;
    }

    .mobile-menu-btn {
        display: block;
    }

    .header-container {
        padding: 0 1rem;
    }

    .policy-sidebar {
        position: relative;
        width: 100%;
        height: auto;
        top: 0;
        bottom: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        border-radius: 0;
        padding: 1.5rem;
    }

    .policy-container {
        margin-left: 0;
        padding: 0;
    }

    .policy-content {
        position: relative;
        top: auto;
        bottom: auto;
        left: auto;
        right: auto;
        padding: 0 1rem;
        overflow-y: visible;
    }

    .policy-main {
        padding: 2rem 0;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .section-content {
        padding: 1.5rem;
    }
}

/* 超小移动设备 */
@media (max-width: 480px) {
    .section-header h2 {
        font-size: 1.5rem;
    }

    .section-content {
        padding: 1rem;
    }

    .btn-primary {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}


/**
 * =============================================================================
 * 深色主题额外样式
 * =============================================================================
 */

html[data-theme='dark'] .section-content h2 {
    border-bottom-color: var(--border-color);
}