/* ==========================================================================
   朔晞探微 · 全局 Layout 骨架 (终极整合版)
   ========================================================================== */

body.has-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
    background-color: var(--color-bg-body);
    margin: 0;
}

/* ========== 侧边栏 ========== */
.sidebar {
    width: 240px;
    background: var(--color-bg-sidebar);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    border-right: 1px solid var(--color-border-dark);
}

.sidebar .logo-area {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center; /* 品牌名居中 */
    padding: 0 16px;
    border-bottom: 1px solid var(--color-border-dark);
}

.sidebar .logo {
    color: var(--color-text-on-dark);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.4;
    text-align: center;
    width: 100%;
}

.sidebar .logo.logo-long {
    font-size: 13px !important;
    letter-spacing: 0 !important;
    white-space: normal !important;
    word-break: break-all !important;
}

.sidebar .nav-menu {
    flex: 1;
    padding: 16px 0;
    overflow-y: auto;
}

.sidebar .nav-item {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: #94a3b8;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.15s;
    margin: 4px 0;
    border-left: 3px solid transparent;
}

.sidebar .nav-item:hover {
    background: rgba(255,255,255,0.05);
    color: var(--color-text-on-dark);
}

.sidebar .nav-item.active {
    background: rgba(255,255,255,0.15);
    color: #ffffff;
    font-weight: 600;
    border-left: 3px solid var(--color-brand-primary);
}

.sidebar .nav-footer-group {
    display: flex;
    border-top: 1px solid var(--color-border-dark);
}

.sidebar .nav-footer {
    flex: 1;
    padding: 16px 0;
    color: #94a3b8;
    font-size: 13px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    border: none;
}

.sidebar .nav-footer:first-child {
    border-right: 1px solid var(--color-border-dark);
}

.sidebar .nav-footer:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

/* ========== 右侧主区域 ========== */
.main-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* ========== 顶栏（统一深蓝底色） ========== */
.topbar {
    height: 64px;
    background: var(--color-bg-sidebar);
    color: var(--color-text-on-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--color-border-dark);
    box-shadow: none;
    z-index: 10;
}

.topbar .breadcrumb {
    font-size: 14px;
    color: #94a3b8;
}

.topbar .breadcrumb strong {
    color: #ffffff;
    font-weight: 500;
}

.topbar .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: #e2e8f0;
}

.topbar .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
}