/* 布局相关样式 */

/* 应用容器 */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-speed);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    /* 后台风格：全宽铺展，子元素拉伸 */
    align-items: stretch;
}

.sidebar-collapsed .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* 头部区域 */
.header {
    height: var(--header-height);
    background: linear-gradient(135deg, white 0%, var(--gray-50) 100%);
    box-shadow: var(--box-shadow);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: var(--z-header);
    overflow: visible;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.2;
}

/* 头部左侧 */
.header-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.header-left h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 500;
    color: var(--text-color);
    line-height: 1.4;
}

/* 面包屑导航 */
.breadcrumb {
    margin: 0;
    padding: 0;
    background: none;
    font-size: 12px;
    margin-top: 2px;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    color: var(--gray-500);
    margin: 0 8px;
}

.breadcrumb-item a {
    color: var(--gray-500);
    transition: color var(--transition-speed);
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--text-color);
}

/* 头部右侧 */
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* 内容包装器 */
.content-wrapper {
    padding: 24px;
    flex: 1;
    background-color: var(--light-color);
    position: relative;
    z-index: 1;
    overflow-x: auto;
    /* 保持全宽，由内部组件控制密度 */
    width: 100%;
}



/* 页脚 */
.footer {
    height: var(--footer-height);
    background-color: white;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0 30px;
    display: flex;
    align-items: center;
    margin-top: auto;
}

.footer p {
    margin: 0;
    color: var(--gray-500);
    font-size: 12px;
}

/* 栅格系统增强 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}

.col, .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, 
.col-7, .col-8, .col-9, .col-10, .col-11, .col-12,
.col-sm, .col-sm-1, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6,
.col-sm-7, .col-sm-8, .col-sm-9, .col-sm-10, .col-sm-11, .col-sm-12,
.col-md, .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6,
.col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12,
.col-lg, .col-lg-1, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6,
.col-lg-7, .col-lg-8, .col-lg-9, .col-lg-10, .col-lg-11, .col-lg-12,
.col-xl, .col-xl-1, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6,
.col-xl-7, .col-xl-8, .col-xl-9, .col-xl-10, .col-xl-11, .col-xl-12 {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}

.col {
    flex-basis: 0;
    flex-grow: 1;
    max-width: 100%;
}

.col-auto {
    flex: 0 0 auto;
    width: auto;
    max-width: 100%;
}

/* 容器 */
.container {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.container-fluid {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* 间距类 */
.g-0 {
    --bs-gutter-x: 0;
    --bs-gutter-y: 0;
}

.g-1 {
    --bs-gutter-x: 0.25rem;
    --bs-gutter-y: 0.25rem;
}

.g-2 {
    --bs-gutter-x: 0.5rem;
    --bs-gutter-y: 0.5rem;
}

.g-3 {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 1rem;
}

.g-4 {
    --bs-gutter-x: 1.5rem;
    --bs-gutter-y: 1.5rem;
}

.g-5 {
    --bs-gutter-x: 3rem;
    --bs-gutter-y: 3rem;
}

.row > * {
    padding-right: calc(var(--bs-gutter-x, 0.75rem) * 0.5);
    padding-left: calc(var(--bs-gutter-x, 0.75rem) * 0.5);
    margin-top: var(--bs-gutter-y, 0);
}

/* 让头部/页脚始终占满宽度，内容区可居中收敛 */
.main-content > .header,
.main-content > .footer {
    align-self: stretch;
}

/* --- Responsive column widths (minimal subset) --- */
@media (min-width: 768px) {
    .col-md-12 { flex: 0 0 auto; width: 100%; }
    .col-md-8  { flex: 0 0 auto; width: 66.6667%; }
    .col-md-6  { flex: 0 0 auto; width: 50%; }
    .col-md-4  { flex: 0 0 auto; width: 33.3333%; }
}

@media (min-width: 992px) {
    .col-lg-6 { flex: 0 0 auto; width: 50%; }
}

@media (min-width: 1200px) {
    .col-xl-6 { flex: 0 0 auto; width: 50%; }
    .col-xl-3 { flex: 0 0 auto; width: 25%; }
}