/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

/* 侧边栏样式 */
.sidebar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
}

.sidebar .nav-link {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8) !important;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin: 0.25rem 0.5rem;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
    color: #fff !important;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.sidebar .nav-link.active {
    color: #fff !important;
    background-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sidebar .nav-link i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
}

/* 主内容区样式 */
main {
    transition: margin-left 0.3s ease;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px 15px 0 0 !important;
    border: none;
}

/* 统计卡片样式 - 使用Bootstrap 5的border-start */
.border-start.border-primary {
    border-left-color: #4e73df !important;
}

.border-start.border-success {
    border-left-color: #1cc88a !important;
}

.border-start.border-info {
    border-left-color: #36b9cc !important;
}

.border-start.border-warning {
    border-left-color: #f6c23e !important;
}

/* 文本样式 */
.text-dark {
    color: #5a5c69 !important;
}

.text-muted {
    color: #858796 !important;
}

/* 按钮样式 */
.btn {
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-outline-secondary {
    border-color: #858796;
    color: #858796;
}

.btn-outline-secondary:hover {
    background-color: #858796;
    border-color: #858796;
    color: white;
}

/* 表格样式 */
.table {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.table thead th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.05);
}

/* 表单样式 */
.form-control, .form-select {
    border-radius: 10px;
    border: 2px solid #e3e6f0;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 模态框样式 */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px 15px 0 0;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* 响应式设计 */
@media (max-width: 767.98px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        z-index: 1000;
        transition: left 0.3s ease;
    }
    
    .sidebar.show {
        left: 0;
    }
    
    main {
        margin-left: 0 !important;
    }
    
    .col-xl-3 {
        margin-bottom: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 加载状态 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 状态徽章 */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending {
    background-color: #fff3cd;
    color: #856404;
}

.status-approved {
    background-color: #d4edda;
    color: #155724;
}

.status-rejected {
    background-color: #f8d7da;
    color: #721c24;
}

/* 金额显示 */
.amount-positive {
    color: #1cc88a;
    font-weight: 600;
}

.amount-negative {
    color: #e74a3b;
    font-weight: 600;
}

.amount-neutral {
    color: #858796;
    font-weight: 600;
}