/* RSSFlow Reader 帮助中心样式 */

/* 导航栏样式 */
.help-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-home {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-home:hover {
    color: var(--secondary-color);
    transform: translateX(-3px);
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

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

/* 语言选择器样式 */
.language-selector {
    position: relative;
    display: inline-block;
}

.language-btn {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 25px;
    padding: 0.6rem 1.2rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-color);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 130px;
    justify-content: space-between;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    outline: none;
}

.language-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.language-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.language-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    min-width: 160px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.language-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.language-menu a {
    display: block;
    padding: 0.9rem 1.2rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    white-space: nowrap;
}

.language-menu a:last-child {
    border-bottom: none;
}

.language-menu a:hover {
    background: linear-gradient(135deg, var(--primary-color), #4a90e2);
    color: white;
    transform: translateX(3px);
}

.language-menu a:first-child {
    border-radius: 12px 12px 0 0;
}

.language-menu a:last-child {
    border-radius: 0 0 12px 12px;
}

/* 当前选中语言的样式 */
.language-menu a.current {
    background: rgba(var(--primary-color-rgb, 74, 144, 226), 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.language-menu a.current:hover {
    background: var(--primary-color);
    color: white;
}

/* 主容器样式 */
.help-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    text-align: left;
}

.help-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.help-header .page-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.help-header .tagline {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 500;
}

.faq-intro {
    font-size: 1.1rem;
    color: #666;
    margin: 1rem auto;
    max-width: 600px;
    line-height: 1.6;
}

/* 帮助区块样式 */
.help-section {
    margin: 3rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.help-section h2 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.help-section h3 {
    color: var(--secondary-color);
    margin: 2rem 0 1rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.help-section h4 {
    color: var(--text-color);
    margin: 1.5rem 0 0.8rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.help-section h5 {
    color: var(--primary-color);
    margin: 1rem 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

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

.help-section li {
    margin: 0.5rem 0;
    line-height: 1.6;
}

.help-section p {
    margin: 1rem 0;
    line-height: 1.6;
    color: var(--text-color);
}

/* 快速链接样式 */
.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.quick-link {
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.quick-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.quick-link h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.quick-link p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.4;
}

/* 代码块样式 */
.code-block {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1.2rem;
    margin: 1.5rem 0;
    font-family: 'Courier New', 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-x: auto;
    color: #495057;
}

/* 提示框样式 */
.warning {
    background: linear-gradient(135deg, #fff3cd 0%, #fef9e7 100%);
    border: 1px solid #ffeaa7;
    border-left: 4px solid #f39c12;
    border-radius: 8px;
    padding: 1.2rem;
    margin: 1.5rem 0;
}

.info {
    background: linear-gradient(135deg, #d1ecf1 0%, #e8f6f8 100%);
    border: 1px solid #bee5eb;
    border-left: 4px solid #17a2b8;
    border-radius: 8px;
    padding: 1.2rem;
    margin: 1.5rem 0;
}

.highlight {
    background: linear-gradient(135deg, #fff3cd 0%, #fef9e7 100%);
    border: 1px solid #ffeaa7;
    border-left: 4px solid #ffc107;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

/* 链接框样式 */
.link-box {
    background: linear-gradient(135deg, #d1ecf1 0%, #e8f6f8 100%);
    border: 1px solid #bee5eb;
    border-left: 4px solid #17a2b8;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.link-box a {
    color: #0c5460;
    text-decoration: none;
    font-weight: 600;
}

.link-box a:hover {
    text-decoration: underline;
    color: var(--primary-color);
}

/* 微信联系区域样式 */
.wechat-contact {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 16px;
    padding: 2.5rem;
    margin: 2rem 0;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.wechat-contact h4 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.wechat-qr-container {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.qr-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    min-width: 200px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.qr-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.qr-item img {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    border: 2px solid #f0f0f0;
}

.qr-item h5 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 600;
}

.qr-item p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.4;
}

.wechat-tips {
    background: linear-gradient(135deg, #e8f4fd 0%, #f0f8ff 100%);
    border: 1px solid #bee5eb;
    border-left: 4px solid #17a2b8;
    border-radius: 8px;
    padding: 1.2rem;
    margin-top: 2rem;
    font-size: 0.95rem;
    color: #0c5460;
    text-align: left;
}

/* FAQ样式 */
.faq-container {
    margin: 2rem 0;
}

.faq-item {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    margin: 1.5rem 0;
    border: 1px solid rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.faq-item:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
    border-color: var(--primary-color);
}

.faq-question {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 1.5rem;
    cursor: pointer;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: linear-gradient(135deg, #e9ecef 0%, #f8f9fa 100%);
}

.faq-question h4 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    flex: 1;
    line-height: 1.4;
}

.faq-toggle {
    font-size: 1.3rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
    font-weight: bold;
    margin-left: 1rem;
}

.faq-answer {
    padding: 1.5rem;
    display: none;
    line-height: 1.6;
    background: white;
}

.faq-answer.active {
    display: block;
}

.faq-answer p {
    margin: 1rem 0;
    color: var(--text-color);
}

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

.faq-answer li {
    margin: 0.5rem 0;
    color: var(--text-color);
}

.faq-answer strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .nav-links {
        gap: 0.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .language-btn {
        min-width: 110px;
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
        border-radius: 20px;
    }

    .language-menu {
        min-width: 140px;
        right: 0;
        left: auto;
        transform-origin: top right;
    }

    .language-menu.show {
        transform: translateY(0) scale(1);
    }

    .language-menu a {
        padding: 0.8rem 1rem;
        font-size: 0.85rem;
    }

    .help-container {
        padding: 1rem;
    }

    .help-header {
        padding: 1rem 0;
        margin-bottom: 2rem;
    }

    .help-header .page-title {
        font-size: 2rem;
    }

    .help-section {
        padding: 1.5rem;
        margin: 2rem 0;
    }

    .help-section h2 {
        font-size: 1.5rem;
    }

    .quick-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .wechat-contact {
        padding: 1.5rem;
    }

    .wechat-qr-container {
        gap: 2rem;
        flex-direction: column;
        align-items: center;
    }

    .qr-item {
        min-width: auto;
        width: 100%;
        max-width: 280px;
    }

    .qr-item img {
        width: 120px;
        height: 120px;
    }

    .faq-question {
        padding: 1.2rem;
    }

    .faq-question h4 {
        font-size: 1rem;
    }

    .faq-answer {
        padding: 1.2rem;
    }

    .code-block {
        font-size: 0.8rem;
        padding: 1rem;
    }
}