/* PWA 底部导航栏 - 固定在屏幕底部 */
/* 统一所有页面的底部导航栏样式，确保在同一水平线上 */
/* 默认在浏览器中隐藏，只在 PWA 模式下显示 */

/* 最高优先级：非PWA模式下强制隐藏 */
/* 注意：这个规则不能太早执行，否则会阻止PWA模式的显示 */
.bottom-nav:not(.pwa-mode):not([style*="display: flex"]),
body:not(.pwa-active) .bottom-nav:not(.pwa-mode):not([style*="display: flex"]),
html:not(.pwa-active) .bottom-nav:not(.pwa-mode):not([style*="display: flex"]) {
    display: none !important;
}

.bottom-nav {
    position: fixed !important;
    bottom: 0 !important; /* 强制贴底，使用0而不是safe-area-inset-bottom */
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    display: none !important; /* 默认隐藏，JavaScript会根据PWA模式控制显示 */
    justify-content: space-around;
    align-items: center;
    padding-top: 0.5rem;
    /* 统一：padding-bottom 只使用安全区域，确保所有页面贴底在同一水平线 */
    /* 通过padding处理安全区域，而不是通过bottom值 */
    padding-bottom: env(safe-area-inset-bottom, 0px) !important;
    padding-left: env(safe-area-inset-left, 0px) !important;
    padding-right: env(safe-area-inset-right, 0px) !important;
    z-index: 10000 !important;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    /* 统一宽度，确保所有页面一致 */
    width: 100vw !important;
    max-width: 100vw !important;
    min-width: 100vw !important;
    box-sizing: border-box !important;
    /* 统一：确保所有页面无margin，真正贴底 */
    margin: 0 !important;
    margin-bottom: 0 !important;
    /* 统一：确保定位属性一致 */
    transform: none !important;
    clear: both !important;
    float: none !important;
    /* 强制贴底 - 使用 bottom:0 和 inset 确保所有页面在同一水平线 */
    inset: auto 0 0 0 !important;
}

/* 首页的底部导航栏 - 确保与其他页面在同一水平线 */
/* 使用与所有页面相同的定位策略 */
body.homepage .bottom-nav:not(.pwa-mode) {
    display: none !important; /* 非PWA模式下强制隐藏 */
}

body.homepage .bottom-nav {
    /* 使用与基础样式完全相同的定位 */
    position: fixed !important;
    bottom: 0 !important; /* 强制贴底，使用0而不是safe-area-inset-bottom */
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    z-index: 10000 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    min-width: 100vw !important;
    margin: 0 !important;
    margin-bottom: 0 !important;
    padding: 0 !important;
    padding-top: 0.5rem !important;
    /* 统一：与其他页面使用相同的 padding-bottom，通过padding处理安全区域 */
    padding-bottom: env(safe-area-inset-bottom, 0px) !important;
    padding-left: env(safe-area-inset-left, 0px) !important;
    padding-right: env(safe-area-inset-right, 0px) !important;
    box-sizing: border-box !important;
    transform: none !important;
    clear: both !important;
    float: none !important;
    /* 确保不被 body 的定位影响 */
    isolation: isolate !important;
    /* 统一布局 */
    justify-content: space-around !important;
    align-items: center !important;
    /* 强制贴底 - 确保与其他页面在同一水平线，使用bottom:0而不是inset */
    inset: auto 0 0 0 !important;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* 优化padding，确保按钮内容正确显示 */
    padding: 0.5rem 1rem;
    padding-bottom: 0.5rem; /* 确保图标和文字之间有间距 */
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 60px;
    min-height: 60px;
    border-radius: 8px;
    position: relative;
    touch-action: manipulation;
    /* 确保按钮不会影响底部导航栏的位置 */
    margin: 0;
    box-sizing: border-box;
}

.bottom-nav-item i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    transition: all 0.3s ease;
}

.bottom-nav-item span {
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.bottom-nav-item:hover {
    color: var(--primary-color);
    background: rgba(0, 212, 255, 0.1);
}

.bottom-nav-item.active {
    color: var(--primary-color);
}

.bottom-nav-item.active i {
    transform: scale(1.1);
}

.bottom-nav-item.active::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 0 0 3px 3px;
}

/* PWA 模式下，优化底部导航栏样式 */
@media (display-mode: standalone) {
    .bottom-nav.pwa-mode,
    .bottom-nav {
        display: flex !important; /* PWA 模式下强制显示 */
        background: rgba(10, 14, 39, 0.98) !important;
        backdrop-filter: blur(10px) !important;
        -webkit-backdrop-filter: blur(10px) !important;
        /* 强制固定在屏幕底部，不受任何影响，相对于视口定位 */
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        /* PWA 安全区域适配 - 适配所有设备 */
        /* padding-bottom 只使用安全区域，确保真正贴底 */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-left: env(safe-area-inset-left, 0px) !important;
        padding-right: env(safe-area-inset-right, 0px) !important;
        padding-top: 0.5rem !important;
        /* 确保在所有设备上都能正确显示，使用视口单位 */
        width: 100vw !important;
        max-width: 100vw !important;
        min-width: 100vw !important;
        z-index: 10000 !important; /* 确保在最上层，高于所有其他元素 */
        box-sizing: border-box !important;
        margin: 0 !important;
        /* 确保不会被其他元素覆盖，真正贴在底部 */
        transform: none !important;
        top: auto !important;
        /* 移除任何可能影响定位的属性 */
        clear: both !important;
        float: none !important;
        /* 确保相对于视口定位，不受父元素影响 */
        contain: layout style paint !important;
    }
    
    /* 首页的底部导航栏 - 确保与其他页面在同一水平线 */
    /* 使用与所有页面完全相同的样式，确保一致性 */
    body.homepage .bottom-nav {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        top: auto !important;
        z-index: 10000 !important;
        width: 100vw !important;
        max-width: 100vw !important;
        min-width: 100vw !important;
        margin: 0 !important;
        margin-bottom: 0 !important;
        padding: 0 !important;
        padding-top: 0.5rem !important;
        /* 统一：与其他页面使用相同的 padding-bottom */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-left: env(safe-area-inset-left, 0px) !important;
        padding-right: env(safe-area-inset-right, 0px) !important;
        box-sizing: border-box !important;
        transform: none !important;
        clear: both !important;
        float: none !important;
        /* 确保不被 body 的定位影响 */
        isolation: isolate !important;
        /* 统一布局 */
        display: flex !important;
        justify-content: space-around !important;
        align-items: center !important;
        /* 强制贴底 - 确保与其他页面在同一水平线 */
        inset: auto 0 0 0 !important;
    }
    
    /* PWA 模式下，确保页面内容不被底部导航栏遮挡 */
    /* 统一所有页面的 padding-bottom，确保底部导航栏在同一水平线 */
    .main-content {
        padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)) !important;
    }
    
    /* 确保客服和我的页面的底部导航栏也在同一水平线 */
    .support-page .main-content,
    .orders-page .main-content,
    .support-page,
    .orders-page {
        padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)) !important;
        margin-bottom: 0 !important;
    }
    
    /* 确保这些页面的底部导航栏定位一致 */
    .support-page .bottom-nav,
    .orders-page .bottom-nav {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        top: auto !important;
        z-index: 10000 !important;
        width: 100vw !important;
        max-width: 100vw !important;
        min-width: 100vw !important;
        margin: 0 !important;
        margin-bottom: 0 !important;
        padding: 0 !important;
        padding-top: 0.5rem !important;
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-left: env(safe-area-inset-left, 0px) !important;
        padding-right: env(safe-area-inset-right, 0px) !important;
        box-sizing: border-box !important;
        transform: none !important;
        clear: both !important;
        float: none !important;
        display: flex !important;
        justify-content: space-around !important;
        align-items: center !important;
        inset: auto 0 0 0 !important;
    }
    
    /* PWA 模式下，确保底部导航栏在所有设备上都能正确显示 */
    body {
        padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)) !important;
    }
    
    /* 确保没有任何元素覆盖底部导航栏 */
    /* 移除空规则集，避免警告 */
    
    /* 确保 hero-section 不会遮挡底部导航栏 */
    .hero-section {
        z-index: 1 !important;
    }
}

/* 普通浏览器模式下，也需要添加底部 padding 避免内容被遮挡 */
.main-content {
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
}

/* 移动端优化 */
@media (max-width: 768px) {
    .bottom-nav:not(.pwa-mode) {
        display: none !important; /* 非PWA模式下强制隐藏 */
    }
    
    .bottom-nav {
        padding-top: 0.5rem;
        /* 移动端也使用相同的padding-bottom策略，只包含安全区域 */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-left: env(safe-area-inset-left, 0px);
        padding-right: env(safe-area-inset-right, 0px);
        /* 确保在移动端正确固定在底部 */
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin: 0 !important;
        transform: none !important;
        z-index: 10000 !important;
    }
    
    .bottom-nav-item {
        padding: 0.5rem 0.75rem;
        min-width: 50px;
        min-height: 50px;
        /* 适配安全区域 */
        margin-left: env(safe-area-inset-left, 0px);
        margin-right: env(safe-area-inset-right, 0px);
    }
    
    .bottom-nav-item i {
        font-size: 1.25rem;
    }
    
    .bottom-nav-item span {
        font-size: 0.7rem;
    }
    
    .main-content {
        padding-bottom: calc(70px + env(safe-area-inset-bottom, 0px));
    }
}

/* PWA + 移动端模式 - 确保底部导航栏在所有移动设备上正确显示 */
@media (max-width: 768px) and (display-mode: standalone) {
    .bottom-nav.pwa-mode,
    .bottom-nav {
        display: flex !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100% !important;
        min-width: 100% !important;
        /* 使用安全区域作为padding-bottom，确保真正贴底 */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-left: env(safe-area-inset-left, 0px) !important;
        padding-right: env(safe-area-inset-right, 0px) !important;
        padding-top: 0.5rem !important;
        z-index: 10000 !important; /* 确保在最上层 */
        box-sizing: border-box !important;
        margin: 0 !important;
        transform: none !important;
        top: auto !important;
        clear: both !important;
        float: none !important;
    }
}

/* 横屏模式 + PWA - 确保底部导航栏在横屏时也能正确显示 */
@media (orientation: landscape) and (display-mode: standalone) {
    .bottom-nav.pwa-mode,
    .bottom-nav {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100% !important;
        z-index: 10000 !important;
        /* 横屏模式下，使用安全区域作为padding-bottom */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        padding-top: 0.4rem !important;
        margin: 0 !important;
        transform: none !important;
        box-sizing: border-box !important;
    }
}

/* 超小屏设备适配 */
@media (max-width: 360px) {
    .bottom-nav:not(.pwa-mode) {
        display: none !important; /* 非PWA模式下强制隐藏 */
    }
    
    .bottom-nav {
        padding-top: 0.4rem;
        /* 超小屏也确保真正贴底 */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100% !important;
        z-index: 10000 !important;
        margin: 0 !important;
        box-sizing: border-box !important;
        transform: none !important;
    }
    
    .bottom-nav-item {
        padding: 0.4rem 0.5rem;
        min-width: 45px;
        min-height: 45px;
    }
    
    .bottom-nav-item i {
        font-size: 1.1rem;
    }
    
    .bottom-nav-item span {
        font-size: 0.65rem;
    }
}

/* 横屏模式适配 */
@media (orientation: landscape) {
    .bottom-nav:not(.pwa-mode) {
        display: none !important; /* 非PWA模式下强制隐藏 */
    }
    
    .bottom-nav {
        /* 横屏模式下，底部导航栏可能需要调整高度 */
        padding-top: 0.4rem;
        /* 横屏模式确保真正贴底 */
        padding-bottom: env(safe-area-inset-bottom, 0px) !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100vw !important;
        max-width: 100% !important;
        z-index: 10000 !important;
        margin: 0 !important;
        box-sizing: border-box !important;
        transform: none !important;
    }
    
    .bottom-nav-item {
        min-height: 50px;
    }
}

/* 所有设备通用 - 确保底部导航栏始终固定在底部，无空隙 */
/* 注意：非PWA模式下会被上面的规则隐藏 */
.bottom-nav:not(.pwa-mode) {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.bottom-nav {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 10000 !important;
    /* 确保没有任何margin或额外的padding导致空隙 */
    margin-bottom: 0 !important;
    margin-top: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    /* 确保padding-bottom只使用安全区域，确保真正贴底 */
    padding-bottom: env(safe-area-inset-bottom, 0px) !important;
    /* 确保真正贴在底部 */
    box-sizing: border-box !important;
    transform: none !important;
    clear: both !important;
    float: none !important;
}

/* 非PWA模式下强制隐藏 */
.bottom-nav:not(.pwa-mode):not([style*="display: flex"]) {
    display: none !important;
}

/* PWA模式下显示 - 最高优先级 */
.bottom-nav.pwa-mode,
body.pwa-active .bottom-nav,
html.pwa-active .bottom-nav,
.bottom-nav[style*="display: flex"] {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
}

/* 联系页面样式 */
.contact-page {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-details h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form-wrapper {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.contact-form-wrapper h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-header h1 {
        font-size: 2rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
}