/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f9fa;
}

/* PWA模式样式 */
body.pwa-mode {
    padding-top: 0;
}

body.pwa-mode .navbar {
    border-radius: 0;
}

/* PWA安装横幅样式 */
.install-banner {
    animation: slideDown 0.3s ease-out;
    border: none;
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    backdrop-filter: blur(10px);
}

.install-banner .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* 网络状态指示器 */
#network-status {
    animation: pulse 2s infinite;
    font-size: 0.8rem;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

/* 离线模式样式 */
.offline-indicator {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffc107;
    color: #212529;
    text-align: center;
    padding: 0.5rem;
    z-index: 1060;
    font-size: 0.9rem;
}

/* 加载中样式 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: bold;
    font-size: 1.2rem;
}

.navbar-nav .nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    margin: 0 0.1rem;
    transition: all 0.3s ease;
}

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

.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: 500;
}

/* 内容区域样式 */
.content-section {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: box-shadow 0.15s ease-in-out;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
    font-weight: 500;
}

/* 统计卡片样式 */
.card.bg-primary,
.card.bg-success,
.card.bg-warning,
.card.bg-info {
    border: none;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

.card.bg-primary .card-body,
.card.bg-success .card-body,
.card.bg-warning .card-body,
.card.bg-info .card-body {
    padding: 1.5rem;
}

.card.bg-primary h4,
.card.bg-success h4,
.card.bg-warning h4,
.card.bg-info h4 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* 表格样式 */
.table {
    margin-bottom: 0;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
    background-color: #f8f9fa;
}

.table td {
    vertical-align: middle;
}

.table-responsive {
    border-radius: 0.375rem;
}

/* 按钮样式 */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.15s ease-in-out;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.btn-outline-secondary:hover {
    color: #fff;
    background-color: #6c757d;
    border-color: #6c757d;
}

/* 分页样式 */
.pagination {
    margin-bottom: 0;
}

.page-link {
    color: #0d6efd;
    border-radius: 0.375rem;
    margin: 0 0.125rem;
    border: 1px solid #dee2e6;
}

.page-link:hover {
    color: #0a58ca;
    background-color: #e9ecef;
    border-color: #dee2e6;
}

.page-item.active .page-link {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.modal-header {
    border-bottom: 1px solid #dee2e6;
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid #dee2e6;
    padding: 1rem 1.5rem;
}

/* 表单样式 */
.form-control,
.form-select {
    border-radius: 0.375rem;
    border: 1px solid #ced4da;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus,
.form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 500;
    color: #495057;
    margin-bottom: 0.5rem;
}

/* 输入组样式 */
.input-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* 加载覆盖层 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}

/* 状态标签样式 */
.badge {
    font-size: 0.75rem;
    font-weight: 500;
}

.status-paid {
    background-color: #198754;
}

.status-unpaid {
    background-color: #dc3545;
}

.status-partial {
    background-color: #fd7e14;
}

/* 图表容器样式 */
.chart-container {
    position: relative;
    height: 300px;
    margin: 1rem 0;
}

/* 搜索框样式 */
.search-box {
    position: relative;
}

.search-box .form-control {
    padding-right: 2.5rem;
}

.search-box .search-icon {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
}

/* 操作按钮组 */
.btn-group-sm .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* 数据为空时的样式 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1rem;
    }
    
    .card.bg-primary h4,
    .card.bg-success h4,
    .card.bg-warning h4,
    .card.bg-info h4 {
        font-size: 1.5rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn-group-sm .btn {
        padding: 0.125rem 0.25rem;
        font-size: 0.7rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 工具提示样式 */
.tooltip {
    font-size: 0.875rem;
}

/* 进度条样式 */
.progress {
    height: 0.5rem;
    border-radius: 0.25rem;
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 0.75rem 1rem;
}

/* 日期选择器样式 */
.date-picker-container {
    position: relative;
}

.date-picker-container .form-control {
    padding-right: 2.5rem;
}

.date-picker-container .calendar-icon {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    pointer-events: none;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 0.25rem;
    background-color: #e9ecef;
    color: #495057;
    margin: 0.125rem;
}

.tag-primary {
    background-color: #cfe2ff;
    color: #084298;
}

.tag-success {
    background-color: #d1e7dd;
    color: #0f5132;
}

.tag-warning {
    background-color: #fff3cd;
    color: #664d03;
}

.tag-danger {
    background-color: #f8d7da;
    color: #842029;
}