/* 全局底部导航样式 - 严格遵循文档 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px; /* 文档要求高度 */
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(238, 238, 238, 0.5);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    /* 适配iOS安全区 */
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #666;
    flex: 1;
    height: 100%;
    transition: all 0.2s;
}
.nav-item.active {
    color: #FF719A; /* 文档指定激活色 */
}
.nav-item.active .nav-icon {
    transform: scale(1.1); /* 文档要求图标放大 */
}
.nav-icon {
    font-size: 24px; /* 文档要求 */
    margin-bottom: 4px;
    transition: transform 0.2s;
}
.nav-text {
    font-size: 12px; /* 文档要求 */
    font-weight: 500;
}
/* 顶部导航通用样式 */
.top-nav {
    background: #FFFFFF;
    border-bottom: 1px solid #F3E7F0;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
    position: sticky;
    top: 0;
    z-index: 999;
}
.top-nav-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
}
/* 页面通用布局，为底部导航预留空间 */
body.has-bottom-nav {
    padding-bottom: 65px;
}