/* 全局样式 */
:root {
    --primary-color: #0052d9;
    --primary-hover: #0066ff;
    --secondary-color: #f2f3f5;
    --success-color: #00a870;
    --warning-color: #ed7b2f;
    --danger-color: #e34d59;
    --text-primary: #1f2329;
    --text-secondary: #5e6673;
    --text-tertiary: #86909c;
    --border-color: #e5e6eb;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --sidebar-width: 240px;
    --header-height: 60px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-color);
    line-height: 1.6;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.app-header {
    height: var(--header-height);
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a7fff 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    box-shadow: 0 2px 8px rgba(0, 82, 217, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
}

.logo i {
    font-size: 24px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}

.sidebar.collapsed {
    width: 60px;
}

.sidebar-menu {
    flex: 1;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border-left: 3px solid transparent;
}

.sidebar-item:hover {
    background-color: rgba(0, 82, 217, 0.05);
    color: var(--primary-color);
}

.sidebar-item.active {
    background-color: rgba(0, 82, 217, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.sidebar-toggle {
    padding: 16px;
    display: flex;
    justify-content: center;
    color: var(--text-tertiary);
    cursor: pointer;
    border-top: 1px solid var(--border-color);
}

.sidebar-toggle:hover {
    color: var(--primary-color);
}

/* 内容区域 */
.content-area {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    background-color: var(--bg-color);
}

.content-header {
    margin-bottom: 24px;
}

.content-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.content-subtitle {
    color: var(--text-tertiary);
    font-size: 14px;
}

/* 卡片样式 */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, #fafbfc 100%);
    border-radius: 8px;
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
}

.trend-up {
    color: var(--success-color);
}

.trend-down {
    color: var(--danger-color);
}

/* 表格样式 */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.data-table th {
    background-color: var(--secondary-color);
    color: var(--text-secondary);
    font-weight: 600;
    text-align: left;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:hover {
    background-color: rgba(0, 82, 217, 0.02);
}

/* 标签样式 */
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-urgent {
    background-color: rgba(227, 77, 89, 0.1);
    color: var(--danger-color);
}

.status-high {
    background-color: rgba(237, 123, 47, 0.1);
    color: var(--warning-color);
}

.status-medium {
    background-color: rgba(0, 168, 112, 0.1);
    color: var(--success-color);
}

.status-low {
    background-color: rgba(94, 102, 115, 0.1);
    color: var(--text-secondary);
}

.status-completed {
    background-color: rgba(0, 82, 217, 0.1);
    color: var(--primary-color);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 82, 217, 0.1);
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #e5e6eb;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #00c27e;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #ff6b7a;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* 过滤器区域 */
.filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar.collapsed {
        width: 100%;
        height: 60px;
        overflow: hidden;
    }
    
    .content-area {
        padding: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .header-actions {
        gap: 8px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* 加载状态 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: var(--text-tertiary);
}

.loading i {
    font-size: 24px;
    animation: spin 1s linear infinite;
}

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

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 20px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-tertiary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.modal-close:hover {
    background-color: var(--secondary-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 表单行 */
.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* 部门统计 */
.department-stat-item {
    margin-bottom: 20px;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
}

.department-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.department-header h4 {
    margin: 0;
    font-size: 16px;
    color: var(--text-primary);
}

.department-count {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-bar {
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #1a7fff);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.department-details {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 部门列表 */
.departments-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.department-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    transition: all 0.2s ease;
}

.department-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 82, 217, 0.1);
}

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

.department-info i {
    font-size: 20px;
    color: var(--primary-color);
}

.department-info h4 {
    margin: 0;
    font-size: 16px;
    color: var(--text-primary);
}

.department-info p {
    margin: 4px 0 0;
    font-size: 12px;
    color: var(--text-tertiary);
}

.department-actions {
    display: flex;
    gap: 8px;
}

/* 成员列表 */
.members-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.member-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
}

.member-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #1a7fff);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.member-info {
    flex: 1;
}

.member-info h4 {
    margin: 0;
    font-size: 16px;
    color: var(--text-primary);
}

.member-info p {
    margin: 4px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.member-stats {
    display: flex;
    gap: 16px;
    margin-top: 8px;
}

.stat-item {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 2px 8px;
    background-color: var(--secondary-color);
    border-radius: 4px;
}

.member-actions {
    display: flex;
    gap: 8px;
}

/* 任务详情 */
.task-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.task-description {
    font-size: 12px;
    color: var(--text-tertiary);
    line-height: 1.4;
}

.task-actions {
    display: flex;
    gap: 8px;
}

/* 标签 */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.tag {
    padding: 4px 12px;
    background-color: var(--secondary-color);
    color: var(--text-secondary);
    border-radius: 12px;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tag-input {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 12px;
    width: 100px;
}

/* 报表样式 */
.report-actions {
    display: flex;
    gap: 8px;
}

.chart-placeholder {
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-color);
    border-radius: 6px;
    color: var(--text-tertiary);
}

.chart-placeholder i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.performance-item {
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
}

.performance-item h4 {
    margin: 0 0 12px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.performance-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

/* 设置页面 */
.settings-form {
    max-width: 500px;
}

.settings-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--secondary-color);
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.theme-options {
    display: flex;
    gap: 12px;
}

.theme-option {
    flex: 1;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-option:hover {
    border-color: var(--primary-color);
}

.theme-option.active {
    border-color: var(--primary-color);
    background-color: rgba(0, 82, 217, 0.05);
}

.theme-option i {
    font-size: 24px;
    color: var(--text-primary);
}

.system-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.info-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
}

/* 用户角色 */
.user-role {
    font-size: 12px;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 8px;
}

/* 间距工具类 */
.mt-3 {
    margin-top: 12px;
}

/* 文本域样式 */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
    font-family: inherit;
}

/* 选择框样式 */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%235e6673' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 36px;
}

/* 禁用状态 */
.form-control:disabled,
.form-control[readonly] {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.7;
}

/* 表格行间距 */
.data-table td:first-child,
.data-table th:first-child {
    padding-left: 0;
}

.data-table td:last-child,
.data-table th:last-child {
    padding-right: 0;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background-color: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--text-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

/* 打印样式 */
@media print {
    .app-header,
    .sidebar,
    .filter-bar,
    .task-actions,
    .modal-overlay {
        display: none !important;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .content-area {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}