/**
 * 移动端顶部导航栏 + 侧边栏（与首页一致的公用样式）
 * 用于 index / article / search / textbooks / account 等页面
 * 避免与 style.css 中的 .sidebar 冲突，侧栏面板使用 .app-mobile-sidebar
 */

/* 汉堡按钮：默认隐藏，由各页面在 @media (max-width: 768px) 内显示 */
.navbar-hamburger {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    margin: 0 4px 0 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm, 8px);
    color: var(--text-secondary, #4b5563);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.navbar-hamburger:hover {
    color: var(--primary, #ff8c69);
    background: var(--bg-page, #f8fafc);
}
.navbar-hamburger i {
    font-size: 1.4rem;
}
@media (max-width: 768px) {
    .navbar-hamburger {
        display: flex;
        min-width: 44px;
        min-height: 44px;
    }
    /* 使用移动端侧栏的顶栏：隐藏文字链接与创作按钮，仅保留汉堡/图标 */
    .navbar-with-mobile-menu {
        padding: 0 16px;
    }
    .navbar-with-mobile-menu .navbar-link,
    .navbar-with-mobile-menu .btn-create {
        display: none !important;
    }
    .navbar-with-mobile-menu .navbar-right {
        gap: 4px;
    }
    .navbar-with-mobile-menu .navbar-right .navbar-search-icon,
    .navbar-with-mobile-menu .navbar-right .navbar-avatar,
    .navbar-with-mobile-menu .navbar-right .language-selector {
        flex-shrink: 0;
    }
}

/* 侧边栏遮罩 */
.app-mobile-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}
.app-mobile-sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 侧边栏面板（避免与 style.css 的 .sidebar 冲突） */
.app-mobile-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: #fff;
    z-index: 1002;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg, 0 10px 30px -10px rgba(0, 0, 0, 0.1));
}
.app-mobile-sidebar.show {
    transform: translateX(0);
}
.app-mobile-sidebar .sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.app-mobile-sidebar .sidebar-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary, #ff8c69);
}
.app-mobile-sidebar .sidebar-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-secondary, #4b5563);
    border-radius: var(--radius-sm, 8px);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.app-mobile-sidebar .sidebar-close:hover {
    background: var(--bg-page, #f8fafc);
}
.app-mobile-sidebar .sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}
.app-mobile-sidebar .sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary, #4b5563);
    text-decoration: none;
    border-radius: var(--radius-sm, 8px);
    margin-bottom: 4px;
    transition: all 0.2s;
}
.app-mobile-sidebar .sidebar-item:hover {
    background: var(--bg-page, #f8fafc);
    color: var(--text-primary, #111827);
}
.app-mobile-sidebar .sidebar-item.active {
    background: var(--primary-soft, rgba(255, 140, 105, 0.14));
    color: var(--primary, #ff8c69);
    font-weight: 600;
}
.app-mobile-sidebar .sidebar-item i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}
.app-mobile-sidebar .sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color, #e5e7eb);
}