/* css/common_nav.css */
:root {
    --nav-font-zh: "KaiTi-CJK", "LXGW WenKai Lite", serif;
    --nav-font-en: "LXGW WenKai Lite", sans-serif;
}

/* 🌟 全局统一导航栏容器 */
.mecc-global-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: #598586;
    border-bottom: 5px solid #f3b236;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    box-sizing: border-box;
    padding: 0 14px;
}

/* 🌟 全局统一返回按钮（融入导航栏） */
.mecc-nav-back {
    position: absolute;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: #ffffff;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: bold;
    transition: opacity 0.2s ease;
    cursor: pointer;
    white-space: nowrap;
    max-width: 42%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mecc-nav-back:hover {
    opacity: 0.7;
}

.mecc-nav-back svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* 🌟 全局统一标题 */
.mecc-nav-title {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: bold;
    margin: 0;
    letter-spacing: 1px;
    text-align: center;
    line-height: 1.1;
    max-width: min(68vw, 760px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 字体适配 */
.mecc-nav-title,
.mecc-nav-back span {
    font-family: var(--nav-font-zh) !important;
}

.mecc-nav-title.en,
.mecc-nav-back.en span {
    font-family: var(--nav-font-en) !important;
}

/* 平板与小屏电脑微调 */
@media (max-width: 1024px) {
    .mecc-nav-back {
        max-width: 36%;
    }

    .mecc-nav-title {
        max-width: 52vw;
    }
}

/* 手机端：只保留返回箭头，隐藏文字，避免与标题重叠 */
@media (max-width: 768px) {
    .mecc-global-nav {
        height: 54px;
        padding: 0 10px;
    }

    .mecc-nav-back {
        left: 10px;
        font-size: 0.95rem;
        gap: 0 !important;
        max-width: none;
    }

    .mecc-nav-back span {
        display: none !important;
    }

    .mecc-nav-title {
        font-size: 1.15rem;
        max-width: calc(100vw - 88px);
    }
}