/* 问题1：界面优化 - 全局与组件样式 */

/* 导航栏：同一行显示，无圆点 */
.navbar .container,
.navbar .container-fluid {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    justify-content: space-between !important;
}
.navbar .navbar-toggler { margin-left: auto; }
.navbar .navbar-collapse {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    flex-grow: 1 !important;
    justify-content: flex-end !important;
}
.navbar .navbar-collapse .me-auto { margin-right: auto !important; }
/* 小屏折叠时由 Bootstrap 控制显示/隐藏；大屏下保持横向 */
@media (min-width: 992px) {
    .navbar .navbar-collapse { display: flex !important; }
}
.navbar-nav {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
}
.navbar-nav .nav-item {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
}
@media (max-width: 991.98px) {
    .navbar .navbar-collapse { flex-direction: column !important; align-items: flex-start !important; }
    .navbar .navbar-collapse .navbar-nav { flex-direction: column !important; }
}

/* 卡片统一风格 */
.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.12);
}
.card-header {
    font-weight: 600;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 0.875rem 1rem;
    background: #fff;
    border-radius: 0.5rem 0.5rem 0 0;
}

/* 统计卡片（仪表板/管理端） */
.stats-card {
    border: none !important;
    border-radius: 0.5rem;
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.stats-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.15);
}
.stats-card .card-title {
    font-size: 0.95rem;
    opacity: 0.95;
}
.stats-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0;
}

/* 表格 */
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.06);
}
.table thead th {
    font-weight: 600;
    color: #495057;
    border-bottom-width: 1px;
}

/* 按钮 */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
}
.btn-primary {
    box-shadow: 0 2px 4px rgba(13, 110, 253, 0.3);
}
.btn-primary:hover {
    box-shadow: 0 4px 8px rgba(13, 110, 253, 0.4);
}

/* 表单 */
.form-control, .form-select {
    border-radius: 0.375rem;
    border-color: #dee2e6;
}
.form-control:focus, .form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}

/* 首页功能卡片：小图标，不依赖图标字体时也不出现大色块 */
.feature-icon-wrap {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.375rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}
.feature-icon-wrap.text-primary { background: rgba(13, 110, 253, 0.1); color: #0d6efd; }
.feature-icon-wrap.text-success { background: rgba(25, 135, 84, 0.1); color: #198754; }
.feature-icon-wrap.text-info    { background: rgba(13, 202, 240, 0.1); color: #0dcaf0; }

/* 首页：图2/图3 风格 - 浅灰底+点状纹理、双栏白卡片 */
.index-wrap {
    background-color: #f5f5f5;
    min-height: calc(100vh - 140px);
    padding: 1.5rem 0 2rem;
}
.index-wrap::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle, #ddd 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}
.index-wrap .container {
    position: relative;
    z-index: 1;
}
.index-panel {
    background: #fff;
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.25rem;
}
.index-panel .panel-title {
    font-size: 1rem;
    font-weight: 700;
    color: #212529;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #0d6efd;
    display: inline-block;
}
.index-panel .panel-body {
    font-size: 0.9375rem;
    color: #495057;
    line-height: 1.6;
}
.index-panel ul {
    margin-bottom: 0;
    padding-left: 1.25rem;
}
.index-panel ul li {
    margin-bottom: 0.35rem;
}
.index-hero {
    background: #fff;
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    padding: 2rem 2rem 2.25rem;
    margin-bottom: 1.25rem;
}
.index-hero h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #212529;
    margin-bottom: 1rem;
    line-height: 1.35;
}
.index-hero .lead {
    font-size: 0.9375rem;
    color: #495057;
    margin-bottom: 0.5rem;
}
.index-hero p {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 1.25rem;
}
.index-hero .btn-lg {
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    border-radius: 0.375rem;
}
.index-features {
    display: grid;
    gap: 1rem;
}
.index-feature-item {
    padding: 1rem 0;
    border-bottom: 1px solid #f0f0f0;
}
.index-feature-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.index-feature-item h6 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #212529;
    margin-bottom: 0.35rem;
}
.index-feature-item p {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 0;
    line-height: 1.5;
}
@media (min-width: 992px) {
    .index-main-row {
        align-items: stretch;
    }
    .index-side-col .index-panel {
        height: 100%;
    }
}

/* 首页主横幅（保留兼容） */
.hero-card {
    border: none;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.08);
}
.hero-card .display-5 {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.3;
}
@media (max-width: 768px) {
    .hero-card .display-5 { font-size: 1.35rem; white-space: normal; }
}

/* 登录/注册页居中 */
.auth-wrapper {
    min-height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
}
.auth-card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
}
.auth-card .card-header {
    border-radius: 0.75rem 0.75rem 0 0;
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
}

/* 内容区块标题 */
.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #212529;
    margin-bottom: 1rem;
}
.section-title i {
    margin-right: 0.35rem;
}

/* 管理端标签页 */
.nav-tabs .nav-link {
    font-weight: 500;
    color: #6c757d;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 0.6rem 1rem;
}
.nav-tabs .nav-link:hover {
    color: #0d6efd;
    border-bottom-color: transparent;
}
.nav-tabs .nav-link.active {
    color: #0d6efd;
    background: transparent;
    border-bottom-color: #0d6efd;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #0d6efd;
    animation: spin 1s ease-in-out infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.nowrap { white-space: nowrap; }

/* 仪表板/管理端：侧边栏布局与链接（修复错位、竖排、无列表符号） */
#layoutSidenav_nav {
    overflow-x: hidden;
    overflow-y: auto;
}
#layoutSidenav_nav .sb-sidenav-menu .nav {
    display: flex !important;
    flex-direction: column !important;
    flex-wrap: nowrap !important;
    list-style: none !important;
    margin: 0 !important;
    padding: 0 0.5rem !important;
}
#layoutSidenav_nav .sb-sidenav-menu .nav .sb-sidenav-menu-heading {
    padding: 1.75rem 1rem 0.75rem !important;
    font-size: 0.75rem !important;
    font-weight: bold !important;
    text-transform: uppercase !important;
}
#layoutSidenav_nav .sb-sidenav-menu .nav .nav-link {
    display: flex !important;
    align-items: center !important;
    padding: 0.75rem 1rem !important;
    margin-bottom: 0 !important;
    border-radius: 0.25rem !important;
    text-decoration: none !important;
    list-style: none !important;
    pointer-events: auto !important;
    cursor: pointer !important;
}
#layoutSidenav_nav .sb-sidenav-footer {
    padding: 0.75rem 1rem !important;
    border-top: 1px solid rgba(255,255,255,0.1) !important;
}
#layoutSidenav_nav a[href^="/"] {
    pointer-events: auto !important;
}
.sb-topnav .dropdown-menu .dropdown-item[href^="/"] {
    cursor: pointer !important;
}

/* 主内容区可点击（避免被 SB Admin 层叠挡住统计卡片与标签页） */
#layoutSidenav_content main {
    position: relative;
    z-index: 2;
    pointer-events: auto !important;
}
#layoutSidenav_content main .container-fluid {
    pointer-events: auto !important;
}
/* 统计卡片与所在行强制可点击（仪表板/管理端） */
#layoutSidenav_content .stats-card,
#layoutSidenav_content #statsCards,
#layoutSidenav_content #adminStats {
    pointer-events: auto !important;
    position: relative;
    z-index: 1;
}
#layoutSidenav_content .nav-tabs,
#layoutSidenav_content .nav-tabs .nav-link {
    pointer-events: auto !important;
    cursor: pointer !important;
}

/* 跳转中提示（点击导航时立即显示） */
/* 弹窗居中包装层（由 showModalFallback 创建，保证在视口正中央） */
.modal-fallback-center-wrapper {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 1055 !important;
    padding: 12vh 2rem 2rem 2rem !important;
    box-sizing: border-box !important;
}

/* 弹窗居中（仪表板/管理端详情弹窗），贴近屏幕中心 */
.modal.show {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 2rem !important;
    min-height: 100vh;
    min-height: 100dvh;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    box-sizing: border-box !important;
}
.modal.show .modal-dialog {
    pointer-events: auto;
    margin: auto !important;
    max-height: calc(100vh - 4rem);
    flex-shrink: 0;
}
/* 若弹窗仍在侧栏布局内，通过 dialog 自身定位实现视口居中 */
body > .modal.show .modal-dialog {
    position: relative;
}

/* 无 Bootstrap 时 fallback 弹窗与遮罩可点击关闭 */
.modal-backdrop[data-modal-backdrop] {
    cursor: pointer;
    pointer-events: auto !important;
}
.modal.show .modal-footer button,
.modal.show [data-bs-dismiss="modal"],
.modal.show .btn-close {
    pointer-events: auto !important;
    cursor: pointer !important;
}

.sb-nav-loading-toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 99999;
    padding: 0.75rem 1.5rem;
    background: rgba(0,0,0,0.75);
    color: #fff;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    pointer-events: none;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}