/* Bootstrap CSS 本地文件 */
/* 请从 https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css 下载完整文件 */
/* 或者使用以下简化版本 */

/* 基础样式 */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    color: #212529;
    background-color: #fff;
}

/* 容器 */
.container {
    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;
    }
}

/* 网格系统 */
.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-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-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 {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}

/* 响应式列 */
@media (min-width: 768px) {
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
}

@media (min-width: 992px) {
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    .col-lg-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
}

/* 导航栏 */
.navbar {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
}

.navbar-dark {
    background-color: #343a40 !important;
}

.navbar-brand {
    display: inline-block;
    padding-top: 0.3125rem;
    padding-bottom: 0.3125rem;
    margin-right: 1rem;
    font-size: 1.25rem;
    line-height: inherit;
    white-space: nowrap;
    color: #fff !important;
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    flex-direction: row;
    padding-left: 0;
    margin-bottom: 0;
    list-style: none;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: rgba(255, 255, 255, 0.75) !important;
    text-decoration: none;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 1) !important;
}

.nav-link.active {
    color: #fff !important;
}

/* 按钮 */
.btn {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    text-decoration: none;
}

.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    color: #fff;
    background-color: #0069d9;
    border-color: #0062cc;
}

.btn-lg {
    padding: 0.5rem 1rem;
    font-size: 1.25rem;
    line-height: 1.5;
    border-radius: 0.3rem;
}

/* 卡片 */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0, 0, 0, 0.125);
    border-radius: 0.25rem;
}

.card-body {
    flex: 1 1 auto;
    padding: 1.25rem;
}

.card-header {
    padding: 0.75rem 1.25rem;
    margin-bottom: 0;
    background-color: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

/* 文本工具类 */
.text-center { text-align: center !important; }
.text-muted { color: #6c757d !important; }
.text-white { color: #fff !important; }
.text-primary { color: #007bff !important; }

/* 背景工具类 */
.bg-primary { background-color: #007bff !important; }
.bg-light { background-color: #f8f9fa !important; }
.bg-dark { background-color: #343a40 !important; }

/* 间距工具类 */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }

.me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }

.ms-auto { margin-left: auto !important; }

.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }
.p-4 { padding: 1.5rem !important; }
.p-5 { padding: 3rem !important; }

/* 显示工具类 */
.d-flex { display: flex !important; }
.d-none { display: none !important; }
.d-block { display: block !important; }

@media (min-width: 768px) {
    .d-md-block { display: block !important; }
    .d-md-none { display: none !important; }
    .text-md-end { text-align: right !important; }
}

@media (min-width: 992px) {
    .d-lg-block { display: block !important; }
    .d-lg-none { display: none !important; }
}

/* 图片 */
.img-fluid {
    max-width: 100%;
    height: auto;
}

.img-fluid.rounded {
    border-radius: 0.25rem;
}

.img-fluid.rounded-circle {
    border-radius: 50%;
}

/* 表单 */
.form-control {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    color: #495057;
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-select {
    display: block;
    width: 100%;
    padding: 0.375rem 2.25rem 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    appearance: none;
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    list-style: none;
    background-color: transparent;
    border-radius: 0.25rem;
}

.breadcrumb-item + .breadcrumb-item {
    padding-left: 0.5rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding-right: 0.5rem;
    color: #6c757d;
    content: "/";
}

/* 手风琴 */
.accordion-item {
    border: 1px solid rgba(0, 0, 0, 0.125);
}

.accordion-button {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    color: #212529;
    text-align: left;
    background-color: #fff;
    border: 0;
    border-radius: 0;
    overflow-anchor: none;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, border-radius 0.15s ease;
}

.accordion-button:not(.collapsed) {
    color: #0c63e4;
    background-color: #e7f1ff;
    box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.125);
}

.accordion-button::after {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-left: auto;
    content: "";
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23212529'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 1.25rem;
    transition: transform 0.15s ease;
}

.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230c63e4'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transform: rotate(-180deg);
}

.accordion-collapse {
    border-top: 1px solid rgba(0, 0, 0, 0.125);
}

.accordion-body {
    padding: 1rem 1.25rem;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
}

.bg-primary {
    background-color: #007bff !important;
}

/* 工具提示 */
.tooltip {
    position: absolute;
    z-index: 1070;
    display: block;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
    text-align: left;
    text-decoration: none;
    text-shadow: none;
    text-transform: none;
    letter-spacing: normal;
    word-break: normal;
    word-spacing: normal;
    white-space: normal;
    line-break: auto;
    font-size: 0.875rem;
    word-wrap: break-word;
    opacity: 0;
}

.tooltip.show {
    opacity: 0.9;
}

.tooltip-inner {
    max-width: 200px;
    padding: 0.25rem 0.5rem;
    color: #fff;
    text-align: center;
    background-color: #000;
    border-radius: 0.25rem;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1055;
    display: none;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    outline: 0;
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 0.5rem;
    pointer-events: none;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 0.3rem;
    outline: 0;
}

.modal-header {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-bottom: 1px solid #dee2e6;
    border-top-left-radius: calc(0.3rem - 1px);
    border-top-right-radius: calc(0.3rem - 1px);
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: 1rem;
}

.modal-footer {
    display: flex;
    flex-wrap: wrap;
    flex-shrink: 0;
    align-items: center;
    justify-content: flex-end;
    padding: 0.75rem;
    border-top: 1px solid #dee2e6;
    border-bottom-right-radius: calc(0.3rem - 1px);
    border-bottom-left-radius: calc(0.3rem - 1px);
}

/* 分页 */
.pagination {
    display: flex;
    padding-left: 0;
    list-style: none;
    border-radius: 0.25rem;
}

.page-link {
    position: relative;
    display: block;
    padding: 0.5rem 0.75rem;
    margin-left: -1px;
    line-height: 1.25;
    color: #007bff;
    background-color: #fff;
    border: 1px solid #dee2e6;
    text-decoration: none;
}

.page-link:hover {
    z-index: 2;
    color: #0056b3;
    text-decoration: none;
    background-color: #e9ecef;
    border-color: #dee2e6;
}

.page-item.active .page-link {
    z-index: 3;
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    float: left;
    min-width: 10rem;
    padding: 0.5rem 0;
    margin: 0.125rem 0 0;
    font-size: 1rem;
    color: #212529;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 0.25rem;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 0.25rem 1rem;
    clear: both;
    font-weight: 400;
    color: #212529;
    text-align: inherit;
    text-decoration: none;
    white-space: nowrap;
    background-color: transparent;
    border: 0;
}

.dropdown-item:hover {
    color: #1e2125;
    background-color: #e9ecef;
}

/* 导航栏折叠 */
.navbar-collapse {
    flex-basis: 100%;
    flex-grow: 1;
    align-items: center;
}

.navbar-toggler {
    padding: 0.25rem 0.75rem;
    font-size: 1.25rem;
    line-height: 1;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    transition: box-shadow 0.15s ease-in-out;
}

.navbar-toggler-icon {
    display: inline-block;
    width: 1.5em;
    height: 1.5em;
    vertical-align: middle;
    content: "";
    background: no-repeat center center;
    background-size: 100% 100%;
}

@media (max-width: 991.98px) {
    .navbar-expand-lg > .container,
    .navbar-expand-lg > .container-fluid {
        padding-right: 0;
        padding-left: 0;
    }
    
    .navbar-expand-lg .navbar-nav {
        flex-direction: column;
    }
    
    .navbar-expand-lg .navbar-nav .dropdown-menu {
        position: static;
        float: none;
    }
    
    .navbar-expand-lg .navbar-collapse {
        display: none !important;
    }
    
    .navbar-expand-lg .navbar-toggler {
        display: block;
    }
}

@media (min-width: 992px) {
    .navbar-expand-lg .navbar-collapse {
        display: flex !important;
        flex-basis: auto;
    }
    
    .navbar-expand-lg .navbar-toggler {
        display: none;
    }
}