/**
 * Layout Styles
 * 主布局样式
 */

/* 应用容器 */
.app-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--color-bg);
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, #1e3a5f 0%, #0f2744 100%);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: var(--z-sidebar);
    transition: transform var(--transition-slow), width var(--transition-slow);
    box-shadow: var(--shadow-lg);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .logo-text {
    opacity: 0;
    width: 0;
}

/* 侧边导航 */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    padding: 0 12px;
    margin-bottom: 8px;
}

.sidebar.collapsed .nav-section-title {
    opacity: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item.active {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.nav-item-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-item-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar.collapsed .nav-item-text {
    opacity: 0;
    width: 0;
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 10px;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition);
}

.collapse-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.collapse-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition);
}

.sidebar.collapsed .collapse-btn svg {
    transform: rotate(180deg);
}

/* 主内容包装器 */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-slow);
}

/* 顶部导航 */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: var(--z-header);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: all var(--transition);
}

.menu-toggle:hover {
    background: var(--color-bg-secondary);
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-item::before {
    content: '/';
    color: var(--color-text-light);
}

.breadcrumb-item:first-child::before {
    display: none;
}

.breadcrumb-item:last-child {
    color: var(--color-text);
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.header-btn:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

.header-btn svg {
    width: 20px;
    height: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.user-info:hover {
    background: var(--color-border);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

/* 主内容区 */
.main-content {
    flex: 1;
    padding: 24px;
}

/* 底部版权 */
.footer {
    height: var(--footer-height);
    display: flex;
    align-items: center;
    justify-content: center;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-card);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* 侧边栏遮罩层 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sidebar) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 加载状态 */
.loading-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    gap: 16px;
    color: var(--color-text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 响应式布局 */
@media (max-width: 767px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .header {
        padding: 0 16px;
    }
    
    .user-name {
        display: none;
    }
    
    .main-content {
        padding: 16px;
    }
    
    .logo-text {
        font-size: 1.1rem;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .sidebar {
        width: var(--sidebar-collapsed-width);
    }
    
    .sidebar .logo-text,
    .sidebar .nav-item-text,
    .sidebar .nav-section-title {
        opacity: 0;
        width: 0;
    }
    
    .main-wrapper {
        margin-left: var(--sidebar-collapsed-width);
    }
}

/* 收起侧边栏时的布局调整 */
@media (min-width: 1024px) {
    .sidebar.collapsed {
        width: var(--sidebar-collapsed-width);
    }
    
    .sidebar.collapsed .logo-text,
    .sidebar.collapsed .nav-item-text,
    .sidebar.collapsed .nav-section-title {
        opacity: 0;
        width: 0;
    }
    
    .main-wrapper {
        margin-left: var(--sidebar-collapsed-width);
    }
}