/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    background-color: #1890ff;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

/* 导航样式 */
.nav {
    padding: 12px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    padding: 6px 0;
    position: relative;
}

.nav a:hover {
    color: #fff;
}

.nav a.active {
    color: #fff;
    font-weight: 600;
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #fff;
    border-radius: 1px;
}

/* 主要内容样式 */
.main {
    padding: 30px 0;
    min-height: 80vh;
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 30px;
}

.card-header {
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-align: center;
    text-decoration: none;
}

.btn-primary {
    background-color: #1890ff;
    color: #fff;
}

.btn-primary:hover {
    background-color: #40a9ff;
}

.btn-secondary {
    background-color: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background-color: #e0e0e0;
}

.btn-danger {
    background-color: #ff4d4f;
    color: #fff;
}

.btn-danger:hover {
    background-color: #ff7875;
}

.btn-success {
    background-color: #52c41a;
    color: #fff;
}

.btn-success:hover {
    background-color: #73d13d;
}

.btn-warning {
    background-color: #faad14;
    color: #fff;
}

.btn-warning:hover {
    background-color: #ffc53d;
}

/* 表单样式 */
.form-item {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    height: 36px;
    padding: 0 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: all 0.3s;
}

.form-input:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-select {
    width: 100%;
    height: 36px;
    padding: 0 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    background-color: #fff;
}

.form-select:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    resize: vertical;
    min-height: 100px;
}

.form-textarea:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-actions {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.table th {
    background-color: #fafafa;
    font-weight: 500;
    color: #333;
}

.table td {
    color: #666;
}

.table tr:hover {
    background-color: #fafafa;
}

/* 网格样式 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 列表样式 */
.list {
    list-style: none;
}

.list-item {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
}

.list-item:last-child {
    border-bottom: none;
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
}

.badge-primary {
    background-color: #e6f7ff;
    color: #1890ff;
}

.badge-success {
    background-color: #f6ffed;
    color: #52c41a;
}

.badge-warning {
    background-color: #fff7e6;
    color: #faad14;
}

.badge-danger {
    background-color: #fff2f0;
    color: #ff4d4f;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 8px;
    margin-bottom: 8px;
}

.tag-primary {
    background-color: #1890ff;
    color: #fff;
}

.tag-success {
    background-color: #52c41a;
    color: #fff;
}

.tag-warning {
    background-color: #faad14;
    color: #fff;
}

.tag-danger {
    background-color: #ff4d4f;
    color: #fff;
}

/* 消息提示样式 */
.message {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 14px;
}

.message-success {
    background-color: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
}

.message-error {
    background-color: #fff2f0;
    border: 1px solid #ffccc7;
    color: #ff4d4f;
}

.message-warning {
    background-color: #fff7e6;
    border: 1px solid #ffd591;
    color: #faad14;
}

.message-info {
    background-color: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #1890ff;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.pagination-item {
    padding: 6px 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.pagination-item:hover {
    border-color: #1890ff;
    color: #1890ff;
}

.pagination-item.active {
    background-color: #1890ff;
    color: #fff;
    border-color: #1890ff;
}

/* 加载动画样式 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #1890ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 响应式样式 */
@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .nav ul {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .main {
        padding: 20px 0;
    }
    
    .card {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1f1f1f;
        color: #e0e0e0;
    }
    
    .card {
        background-color: #2f2f2f;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    .card-title {
        color: #e0e0e0;
    }
    
    .table th {
        background-color: #3f3f3f;
        color: #e0e0e0;
    }
    
    .table td {
        color: #b0b0b0;
    }
    
    .table tr:hover {
        background-color: #3f3f3f;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        background-color: #3f3f3f;
        border-color: #5f5f5f;
        color: #e0e0e0;
    }
    
    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
        border-color: #1890ff;
        box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.3);
    }
    
    .btn-secondary {
        background-color: #3f3f3f;
        color: #e0e0e0;
    }
    
    .btn-secondary:hover {
        background-color: #4f4f4f;
    }
}

/* 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;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 隐藏滚动条但保留功能 */
::-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: #a1a1a1;
}

/* 打印样式 */
@media print {
    .header,
    .nav,
    .footer {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}