/*! nju.atlas - layout.css (全局布局) */

/* ========== 主布局容器 ========== */
.app-layout.mobile-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    background: var(--bg-secondary);
    position: relative;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding-bottom: calc(var(--bottom-tab-height) + 16px);
}

.content-area {
    flex: 1;
    padding: 12px 12px 0;
    overflow-y: auto;
    /* 必须显式锁定横向：否则 overflow-y:auto 会让 overflow-x 计算为 auto，
       导致移动端页面可被左右拖动（应只占满宽度、仅纵向滚动）。 */
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.page { display: none; }
.page.active-page { display: block; position: relative; overflow: hidden; }

/* 内容页宽度：必须在首屏 layout 中定义，不可仅放在 partner.css 懒加载 */
#partnerPage,
#guidePage,
#profilePage,
#messagesPage {
    width: min(1180px, calc(100% - 40px)) !important;
    max-width: 100%;
    margin-left: auto !important;
    margin-right: auto !important;
    padding: 24px 0 calc(96px + var(--atlas-bottombar)) !important;
    box-sizing: border-box;
}
@media (max-width: 768px) {
    .content-area {
        padding: 0 12px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    #partnerPage,
    #guidePage,
    #profilePage,
    #messagesPage {
        width: 100% !important;
        max-width: 100% !important;
        margin-left: auto !important;
        margin-right: auto !important;
        padding-bottom: calc(92px + var(--atlas-bottombar)) !important;
        box-sizing: border-box;
    }
}

/* ========== 顶部栏 ========== */
.top-bar {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
}
.top-bar-left { display: flex; align-items: center; gap: 6px; }
.top-bar-right { display: flex; align-items: center; gap: 8px; }

.brand-mark {
    min-height: 44px;
    border: 0;
    padding: 0;
    background: transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
}
/* 艺术字品牌标识：用 PNG 作为遮罩，颜色由主题紫色控制（昼夜自适应） */
.brand-logo {
    display: block;
    height: clamp(26px, 4.6vw, 34px);
    aspect-ratio: 513 / 122;
    background-color: var(--primary);
    -webkit-mask: url('../image/brand-logo.png') no-repeat left center / contain;
    mask: url('../image/brand-logo.png') no-repeat left center / contain;
    transition: background-color 0.3s ease;
}
.theme-toggle-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--btn-radius);
    background: transparent;
    box-shadow: none;
    cursor: pointer;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    top: 2px;
}
.theme-toggle-btn i.fas {
    -webkit-text-fill-color: currentColor;
    -webkit-text-stroke: 0;
}
.locale-toggle-btn {
    height: 44px;
    padding: 0 10px;
    border: none;
    border-radius: var(--btn-radius);
    background: transparent;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
    position: relative;
    top: 2px;
}
.locale-toggle-btn:hover {
    color: var(--btn-primary-bg);
}
.page-title {
    color: var(--atlas-muted);
    font-size: 0.92rem;
    font-weight: 800;
}

/* 登录/用户区域 */
.login-round-btn:hover { filter: brightness(1.05); }
.topbar-user {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
}
.topbar-username {
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--atlas-muted);
    max-width: 72px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
    line-height: 1;
}
.topbar-username:hover {
    color: var(--btn-primary-bg);
}
.logout-btn {
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    border-radius: var(--btn-radius);
    border: 1.5px solid var(--btn-border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.72rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}
.logout-btn i.fas {
    -webkit-text-fill-color: currentColor;
    -webkit-text-stroke: 0;
}
.logout-btn:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: transparent;
}

/* ========== 顶栏头像（替代用户名文字） ========== */
.topbar-username.topbar-avatar {
    width: 34px;
    height: 34px;
    min-width: 34px;
    max-width: 34px;
    min-height: 34px;
    padding: 0;
    border-radius: 50%;
    overflow: hidden;
    border: 1.5px solid var(--btn-border);
    background: var(--bg-tertiary);
    flex-shrink: 0;
    line-height: 0;
    transition: border-color 0.18s ease, transform 0.18s ease;
}
.topbar-username.topbar-avatar:hover {
    border-color: var(--btn-primary-bg);
    transform: translateY(-1px);
    color: inherit;
}
.topbar-username.topbar-avatar img,
.topbar-username.topbar-avatar span {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}
/* 移动端原本隐藏用户名文字，这里让头像变体保持显示 */
@media (max-width: 768px) {
    .topbar-username.topbar-avatar {
        display: inline-flex !important;
        width: 32px;
        height: 32px;
        min-width: 32px;
        max-width: 32px;
        min-height: 32px;
    }
}

/* ========== 桌面导航 ========== */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0;
    border: none;
    border-bottom: 1px solid var(--btn-border);
    border-radius: 0;
    background: transparent;
}
.desktop-nav-item {
    min-height: 44px;
    padding: 0 16px 10px;
    border: 0;
    border-radius: 0;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    background: transparent;
    color: var(--atlas-muted);
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    white-space: nowrap;
}
.desktop-nav-item.active {
    background: transparent;
    color: var(--btn-primary-bg);
    border-bottom-color: var(--btn-primary-bg);
    box-shadow: none;
}

/* ========== 底部 Tab 栏（移动端） ========== */
.bottom-tab-bar {
    display: none;
    justify-content: space-around;
    align-items: center;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: min(100%, 520px);
    height: 66px;
    padding: 4px 8px;
    z-index: var(--z-tabbar);
    border-top: 1px solid var(--atlas-line);
    background: var(--atlas-card);
    backdrop-filter: blur(18px);
    transition: transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.28s ease;
}
/* 智能显隐：向下滚动时收起到屏幕外，减少存在感（JS 控制 class） */
.bottom-tab-bar.tabbar-hidden {
    transform: translate(-50%, 130%);
    opacity: 0;
}
.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-width: 44px;
    min-height: 44px;
    padding: 4px 10px;
    border: none;
    background: transparent;
    color: var(--atlas-muted);
    font-size: 0.68rem;
    font-weight: 700;
    cursor: pointer;
    transition: color 0.2s;
}
.tab-item i { font-size: 1.15rem; }
.tab-item.active { color: var(--btn-primary-bg); }
.tab-item, .desktop-nav-item { position: relative; overflow: visible; }
.nav-unread-badge {
    position: absolute;
    top: 2px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 999px;
    background: #e5484d;
    color: #fff;
    font-size: 0.6rem;
    font-weight: 800;
    line-height: 16px;
    text-align: center;
    pointer-events: none;
    z-index: 2;
    box-shadow: 0 0 0 2px var(--atlas-bg, #fff);
}
.tab-item .nav-unread-badge {
    left: 50%;
    margin-left: 6px;
    right: auto;
}
.desktop-nav-item .nav-unread-badge { top: 6px; right: 2px; left: auto; margin-left: 0; }

/* ========== 按钮美化覆盖 ========== */
.logout-btn, .map-expand-btn, .primary-btn,
.secondary-btn, .small-btn, .join-btn {
    min-height: 44px;
    border-radius: var(--btn-radius);
}
.topbar-user .logout-btn {
    min-height: 28px;
}
.login-round-btn {
    width: auto;
    height: 44px;
    min-width: 64px;
    min-height: 44px;
    padding: 0 14px;
    border-radius: var(--btn-radius);
    border: 1.5px solid var(--btn-primary-bg);
    background: transparent;
    color: var(--btn-primary-bg);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.logout-btn, .map-expand-btn, .secondary-btn, .small-btn {
    border: 1.5px solid var(--btn-border);
    background: transparent;
    color: var(--atlas-ink);
    box-shadow: none;
}
.primary-btn, .join-btn {
    border: 0;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
}

/* ========== 暗色模式 ========== */
:root[data-theme="dark"] .top-bar {
    background: rgba(20, 16, 30, 0.96);
    border-bottom-color: var(--atlas-line);
}
:root[data-theme="dark"] .brand-mark {
    color: var(--atlas-ink);
}
:root[data-theme="dark"] .theme-toggle-btn {
    background: transparent;
    border-color: var(--btn-border);
    color: var(--btn-primary-bg);
    box-shadow: none;
}
:root[data-theme="dark"] .theme-toggle-btn:hover {
    border-color: var(--btn-primary-bg);
}
:root[data-theme="dark"] .locale-toggle-btn {
    color: var(--text-primary);
}
:root[data-theme="dark"] .locale-toggle-btn:hover {
    color: var(--btn-primary-bg);
}
:root[data-theme="dark"] .page-title {
    color: var(--atlas-muted);
}
:root[data-theme="dark"] .desktop-nav {
    background: transparent;
    border-bottom-color: var(--btn-border);
}
:root[data-theme="dark"] .desktop-nav-item {
    color: var(--atlas-muted);
}
:root[data-theme="dark"] .desktop-nav-item.active {
    background: transparent;
    color: var(--btn-primary-bg);
    border-bottom-color: var(--btn-primary-bg);
    box-shadow: none;
}
:root[data-theme="dark"] .topbar-user {
    background: transparent;
    border: none;
}
:root[data-theme="dark"] .topbar-username {
    color: var(--atlas-muted);
}
:root[data-theme="dark"] .topbar-username:hover {
    color: var(--btn-primary-bg);
}
:root[data-theme="dark"] .logout-btn {
    background: transparent;
    border-color: var(--btn-border);
    color: var(--text-secondary);
}
:root[data-theme="dark"] .logout-btn:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: transparent;
}
:root[data-theme="dark"] .bottom-tab-bar {
    background: var(--atlas-card);
    border-top-color: var(--atlas-line);
}
:root[data-theme="dark"] .tab-item {
    color: var(--atlas-muted);
}
:root[data-theme="dark"] .tab-item.active {
    color: var(--btn-primary-bg);
}
:root[data-theme="dark"] .login-round-btn {
    background: transparent;
    border-color: var(--btn-primary-bg);
    color: var(--btn-primary-bg);
}
:root[data-theme="dark"] .login-round-btn:hover {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
}
:root[data-theme="dark"] .secondary-btn, :root[data-theme="dark"] .small-btn {
    background: transparent;
    border-color: var(--btn-border);
    color: var(--atlas-ink);
}

/* 桌面端暗色模式顶部栏覆盖 */
@media (min-width: 769px) {
    :root[data-theme="dark"] .top-bar {
        background: rgba(20, 16, 30, 0.92) !important;
        border-bottom-color: var(--atlas-line) !important;
    }
}

/* ========== 响应式：桌面端顶部栏固定 ========== */
@media (min-width: 769px) {
    .top-bar {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        z-index: var(--z-topbar) !important;
        height: var(--atlas-topbar) !important;
        width: 100% !important;
        padding: 0 clamp(18px, 4vw, 56px) !important;
        background: rgba(255, 255, 255, 0.86) !important;
        border-bottom: 1px solid var(--atlas-line) !important;
        backdrop-filter: blur(18px);
        box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset;
    }
    /* 导航贴底：撑满顶栏高度、底边线与顶栏底边重合，去除中间悬空的缝隙 */
    .top-bar-right { align-self: stretch; }
    .desktop-nav {
        align-self: stretch;
        align-items: flex-end;
        border-bottom: none;
        height: 100%;
    }
    .desktop-nav-item {
        height: 100%;
        min-height: 0;
        padding: 0 16px;
        margin-bottom: 0;
        border-bottom-width: 2px;
        align-items: center;
        font-size: 0.92rem;
        font-weight: 800;
    }
    .desktop-nav-item.active {
        border-bottom-color: var(--btn-primary-bg);
    }
    .main-content {
        padding-top: var(--atlas-topbar) !important;
        padding-bottom: 0 !important;
    }
    .content-area {
        padding: 0 !important;
        overflow: auto !important;
        position: relative;
        z-index: 1;
    }
    .bottom-tab-bar { display: none !important; }
    .topbar-user {
        align-self: stretch;
        height: 100%;
        padding-bottom: 1px;
    }
    .topbar-username {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        max-width: 80px;
        font-size: 0.88rem;
    }
    .topbar-user .logout-btn {
        width: 28px;
        height: 28px;
        min-width: 28px;
        min-height: 28px;
        flex-shrink: 0;
        align-self: center;
    }
}

/* ========== 移动端顶部栏调整 ========== */
@media (max-width: 768px) {
    :root { --atlas-topbar: 58px; }
    .top-bar { padding: 0 14px !important; }
    .desktop-nav, .topbar-username, .page-title { display: none !important; }
    .logout-btn {
        width: 28px !important;
        height: 28px !important;
        min-height: 28px !important;
        font-size: 0.75rem !important;
    }
    .topbar-user {
        padding: 2px 2px 2px 8px !important;
        gap: 4px !important;
        height: 40px !important;
        min-height: 40px !important;
        align-items: center !important;
    }
    .topbar-username {
        height: 32px !important;
        line-height: 32px !important;
    }
    .logout-btn {
        width: 30px !important;
        height: 30px !important;
        min-width: 30px !important;
        min-height: 30px !important;
        padding: 0 !important;
        border-radius: 999px !important;
        flex: 0 0 30px !important;
        font-size: 0.85rem !important;
    }
    .brand-mark { font-size: 1.35rem; }
    .bottom-tab-bar {
        display: flex !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }
}