/* KA管理系统 - 全局样式 */

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

:root {
    --primary: #1890ff;
    --success: #52c41a;
    --warning: #faad14;
    --danger: #ff4d4f;
    --bg: #f0f2f5;
    --card-bg: #fff;
    --text: #333;
    --text-secondary: #666;
    --border: #e8e8e8;
}

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

/* 登录页面 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary);
}

/* 表单通用 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* 按钮 */
.btn {
    padding: 10px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

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

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

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

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

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

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

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 卡片 */
.card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* 表格 */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

th {
    background: #fafafa;
    font-weight: 600;
    position: relative;
}

th .resizer {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 5px;
    cursor: col-resize;
    background: transparent;
}

th .resizer:hover,
th .resizer.resizing {
    background: var(--primary);
}

tr:hover {
    background: #fafafa;
}

/* 复选框样式 */
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 导航栏 */
.navbar {
    background: var(--primary);
    color: #fff;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    font-size: 20px;
    font-weight: 600;
}

.navbar-menu {
    display: flex;
    gap: 8px;
}

.navbar-menu a {
    color: #fff;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: rgba(255,255,255,0.2);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.navbar-user .role-badge {
    background: rgba(255,255,255,0.2);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.stat-card .label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 600;
    color: var(--primary);
}

.stat-card .value.positive {
    color: var(--success);
}

.stat-card .value.negative {
    color: var(--danger);
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--card-bg);
    border-radius: 8px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    /* 可拖动样式 */
    position: relative;
}

.modal.draggable {
    position: fixed;
    cursor: move;
}

.modal-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* 拖动把手样式 */
    cursor: move;
    user-select: none;
}

.modal-header:active {
    cursor: moving;
}

.modal-header h3 {
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 筛选区域 */
.filter-bar {
    background: var(--card-bg);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.filter-bar select,
.filter-bar input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
}

/* 操作栏 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.toolbar-left {
    display: flex;
    gap: 8px;
    align-items: center;
}

.toolbar-right {
    display: flex;
    gap: 8px;
}

/* 付款记录动态列 */
.payments-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.payment-item {
    display: flex;
    gap: 8px;
    align-items: center;
    background: #f5f5f5;
    padding: 8px 12px;
    border-radius: 4px;
}

.payment-item input {
    width: 120px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 4px;
}

/* 汇总信息 */
.summary-bar {
    background: #e6f7ff;
    padding: 12px 16px;
    border-radius: 6px;
    margin-top: 16px;
    display: flex;
    gap: 24px;
}

.summary-bar .item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.summary-bar .label {
    color: var(--text-secondary);
}

.summary-bar .value {
    font-weight: 600;
    color: var(--primary);
}

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

.empty-state .icon {
    font-size: 48px;
    margin-bottom: 16px;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* 错误提示 */
.error-msg {
    color: var(--danger);
    font-size: 12px;
    margin-top: 4px;
}

/* 成功提示 */
.success-msg {
    color: var(--success);
    font-size: 12px;
    margin-top: 4px;
}

/* ============ 角色权限控制（无闪烁方案） ============ */
/* requires-auth 默认隐藏，等待 JS 确认角色后再显示 */
.requires-auth { display: none !important; }
.admin-only    { display: none !important; }

/* admin / operation 角色：显示 requires-auth 元素 */
.role-granted .requires-auth          { display: inline-flex !important; }
.role-granted a.requires-auth         { display: inline !important; }
.role-granted li.requires-auth        { display: block !important; }
.role-granted .btn.requires-auth      { display: inline-flex !important; }

/* admin 角色：额外显示 admin-only 元素 */
.admin-granted .admin-only            { display: inline-flex !important; }
.admin-granted li.admin-only          { display: block !important; }
.admin-granted button.admin-only      { display: inline-flex !important; }
.admin-granted a.admin-only           { display: inline !important; }

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        height: auto;
        padding: 12px;
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .modal {
        width: 95%;
        margin: 20px;
    }
}

/* 批量导入区域 */
.batch-import-area {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    cursor: pointer;
    transition: border-color 0.3s;
}

.batch-import-area:hover {
    border-color: var(--primary);
}

.batch-import-area .hint {
    color: var(--text-secondary);
    margin-top: 8px;
}

/* 标签页 */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.3s;
}

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

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* 仪表盘布局 */
.dashboard-layout {
    display: grid;
    grid-template-columns: 160px 1fr;
    min-height: calc(100vh - 60px);
    margin-left: -8px;
}

.sidebar {
    background: var(--card-bg);
    padding: 16px 0;
    margin-left: 8px;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin: 2px 0;
}

.sidebar-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 13px;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: #e6f7ff;
    color: var(--primary);
    border-left: 3px solid var(--primary);
}

.main-content {
    padding: 24px;
    overflow-y: auto;
}

/* 公式显示 */
.formula-display {
    background: #f5f5f5;
    padding: 12px 16px;
    border-radius: 6px;
    font-family: monospace;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}