/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --sidebar-width: 250px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    margin: 0 0.25rem;
    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: 600;
}

/* 主要内容区域 */
.main-content {
    margin-top: 76px; /* 导航栏高度 */
    min-height: calc(100vh - 76px);
    padding-bottom: 2rem;
}

.full-page {
    min-height: 100vh;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 0.75rem;
    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: 600;
    border-radius: 0.75rem 0.75rem 0 0 !important;
}

/* 按钮样式 */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

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

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
}

/* 表格样式 */
.table {
    border-radius: 0.5rem;
    overflow: hidden;
}

.table th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    padding: 1rem 0.75rem;
}

.table td {
    padding: 0.75rem;
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.025);
}

/* 分页样式 */
.pagination {
    border-radius: 0.5rem;
}

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

.page-link:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 表单样式 */
.form-control {
    border-radius: 0.5rem;
    border: 1px solid #ced4da;
    padding: 0.75rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

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

.form-select {
    border-radius: 0.5rem;
    padding: 0.75rem;
}

/* 徽章样式 */
.badge {
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
}

/* 状态颜色 */
.status-normal { color: var(--success-color); }
.status-late { color: var(--warning-color); }
.status-absent { color: var(--danger-color); }
.status-leave { color: var(--info-color); }

/* 统计卡片 */
.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

/* 登录页面样式 */
.min-vh-100 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        margin-top: 66px;
        padding: 1rem;
    }

    .card {
        margin-bottom: 1rem;
    }

    .table-responsive {
        border-radius: 0.5rem;
    }

    .btn-group-vertical {
        width: 100%;
    }

    .btn-group-vertical .btn {
        margin-bottom: 0.5rem;
    }
}

/* 加载动画 */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

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

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

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

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

/* 打印样式 */
@media print {
    .navbar, .btn, .pagination {
        display: none !important;
    }

    .main-content {
        margin-top: 0;
    }

    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}