/* 自定义样式 */
:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 25px rgba(0,0,0,0.12);
}

.card-header {
    border-radius: 12px 12px 0 0 !important;
    border-bottom: 1px solid #e9ecef;
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* 表单样式 */
.form-control {
    border-radius: 8px;
    border: 1px solid #dee2e6;
    padding: 0.75rem 1rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* 按钮样式 */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* 进度条样式 */
.progress {
    border-radius: 10px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 10px;
    transition: width 0.6s ease;
}

/* 模态框样式 */
.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.modal-header {
    border-radius: 12px 12px 0 0;
    border-bottom: 1px solid #e9ecef;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.6s ease-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 2rem;
        font-size: 1rem;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
}

/* 表单验证样式 */
.was-validated .form-control:valid {
    border-color: var(--success-color);
}

.was-validated .form-control:invalid {
    border-color: var(--danger-color);
}

.was-validated .form-check-input:valid {
    border-color: var(--success-color);
}

.was-validated .form-check-input:invalid {
    border-color: var(--danger-color);
}

/* 加载动画 */
.spinner-border {
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 10px;
}

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

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

/* 表格样式 */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    background-color: var(--light-color);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
}

/* 徽章样式 */
.badge {
    border-radius: 6px;
    font-weight: 500;
}

/* 导航样式 */
.nav-pills .nav-link {
    border-radius: 8px;
    margin-right: 0.5rem;
}

.nav-pills .nav-link.active {
    background-color: var(--primary-color);
}

/* 分页样式 */
.pagination .page-link {
    border-radius: 6px;
    margin: 0 2px;
    border: 1px solid #dee2e6;
}

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

/* 警告框样式 */
.alert {
    border-radius: 8px;
    border: none;
}

.alert-info {
    background-color: rgba(13, 202, 240, 0.1);
    color: #055160;
}

/* 输入组样式 */
.input-group .form-control {
    border-radius: 8px 0 0 8px;
}

.input-group .btn {
    border-radius: 0 8px 8px 0;
}

/* 下拉菜单样式 */
.dropdown-menu {
    border-radius: 8px;
    border: none;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.dropdown-item:hover {
    background-color: var(--light-color);
}

/* 面包屑样式 */
.breadcrumb {
    background-color: transparent;
    padding: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: #6c757d;
}