/**
 * 工作看板 - 样式表
 * 基于 OLLAMA 风格：黑白为主，简约扁平
 */

/* ========== CSS 变量 ========== */
html {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e8e8e8;
    --bg-hover: #ebebeb;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #d0d0d0;
    --border-light: #e8e8e8;
    --accent: #000000;
    --accent-hover: #333333;

    --priority-urgent: #dc2626;
    --priority-urgent-bg: rgba(220, 38, 38, 0.1);
    --priority-normal: #666666;
    --priority-normal-bg: rgba(102, 102, 102, 0.1);
    --priority-low: #999999;
    --priority-low-bg: rgba(153, 153, 153, 0.1);

    --status-todo: #666666;
    --status-progress: #000000;
    --status-done: #999999;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    --radius: 6px;
    --radius-sm: 4px;
    --radius-lg: 8px;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Consolas, monospace;

    --header-height: 56px;
    --sidebar-width: 240px;
}

html.dark {
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-hover: #222222;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;
    --border-color: #333333;
    --border-light: #222222;
    --accent: #ffffff;
    --accent-hover: #cccccc;

    --priority-urgent: #ff4444;
    --priority-urgent-bg: rgba(255, 68, 68, 0.1);
    --priority-normal: #888888;
    --priority-normal-bg: rgba(136, 136, 136, 0.1);
    --priority-low: #555555;
    --priority-low-bg: rgba(85, 85, 85, 0.1);

    --status-todo: #888888;
    --status-progress: #ffffff;
    --status-done: #555555;
}

/* ========== 重置样式 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    outline: none;
    transition: border-color 0.15s;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--text-secondary);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ========== 通用组件 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius);
    font-weight: 500;
    transition: all 0.15s;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-ghost {
    background: transparent;
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
}

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

.btn-danger:hover {
    background: #ff6666;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* 卡片 */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

/* 表单 */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-input {
    width: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* 标签 */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.tag-urgent {
    background: var(--priority-urgent-bg);
    color: var(--priority-urgent);
}

.tag-normal {
    background: var(--priority-normal-bg);
    color: var(--priority-normal);
}

.tag-low {
    background: var(--priority-low-bg);
    color: var(--priority-low);
}

/* 头像 */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar img, .avatar span {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar span {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.avatar-sm {
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
}

.avatar-lg {
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--priority-urgent);
    color: white;
}

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

.empty-state svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    opacity: 0.5;
}

/* 加载状态 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.2s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.modal-close:hover {
    background: var(--bg-hover);
}

.modal-body {
    padding: var(--spacing-lg);
}

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

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

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.table th {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.table tr:hover td {
    background: var(--bg-hover);
}

/* 消息提示 */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    z-index: 2000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: #22c55e;
}

.toast.error {
    border-color: var(--priority-urgent);
}

/* 分页 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg);
}

.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.pagination a:hover {
    background: var(--bg-tertiary);
}

.pagination .current {
    background: var(--accent);
    color: var(--bg-primary);
}

/* ========== 登录页 ========== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.login-box {
    width: 100%;
    max-width: 360px;
}

.login-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.login-form .form-group {
    margin-bottom: var(--spacing-md);
}

.login-form .btn {
    margin-top: var(--spacing-md);
}

.login-error {
    background: var(--priority-urgent-bg);
    color: var(--priority-urgent);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

/* ========== 头部导航 ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.menu-toggle {
    display: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.menu-toggle:hover {
    background: var(--bg-hover);
}

.logo {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-xl);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all 0.15s;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
}

.notification-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.notification-btn:hover {
    background: var(--bg-hover);
}

.notification-btn.has-badge .badge {
    position: absolute;
    top: 2px;
    right: 2px;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.theme-toggle:hover {
    background: var(--bg-hover);
}

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.user-btn:hover {
    background: var(--bg-hover);
}

.user-btn .username {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.15s;
    z-index: 200;
}

.dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: background 0.15s;
}

.dropdown a:hover {
    background: var(--bg-hover);
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ========== 主布局 ========== */
.main {
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ========== 工作台 ========== */
.welcome-section {
    margin-bottom: var(--spacing-xl);
}

.welcome-section h2 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.stat-card h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 600;
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

/* ========== 任务列表 ========== */
.task-filters {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.task-filters .filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.task-filters select {
    min-width: 140px;
}

/* 看板 */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    align-items: start;
}

.kanban-column {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

.kanban-header h3 {
    font-size: 0.9rem;
    font-weight: 600;
}

.kanban-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.kanban-body {
    padding: var(--spacing-sm);
    min-height: 200px;
}

.task-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.15s;
}

.task-card:hover {
    border-color: var(--text-secondary);
}

.task-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.task-priority {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.task-priority.urgent {
    background: var(--priority-urgent);
}

.task-priority.normal {
    background: var(--priority-normal);
}

.task-priority.low {
    background: var(--priority-low);
}

.task-card-title {
    flex: 1;
    font-weight: 500;
    line-height: 1.4;
}

.task-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.task-card-meta svg {
    width: 14px;
    height: 14px;
    vertical-align: -2px;
    margin-right: 2px;
}

.task-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
}

/* 列表视图 */
.task-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.task-list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all 0.15s;
}

.task-list-item:hover {
    border-color: var(--text-secondary);
}

.task-list-item .task-priority {
    width: 10px;
    height: 10px;
    margin-top: 0;
}

.task-list-item .task-info {
    flex: 1;
    min-width: 0;
}

.task-list-item .task-title {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.task-list-item .task-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== 用户管理 ========== */
.user-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-md);
}

.user-card .user-info {
    flex: 1;
    min-width: 0;
}

.user-card .user-name {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.user-card .user-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.user-card .user-role {
    margin-left: auto;
}

/* ========== 设置页 ========== */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .header {
        padding: 0 var(--spacing-sm);
    }

    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        bottom: 0;
        width: var(--sidebar-width);
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        margin-left: 0;
        transform: translateX(-100%);
        transition: transform 0.2s;
        z-index: 95;
    }

    .nav.show {
        transform: translateX(0);
    }

    .nav-link {
        padding: var(--spacing-md);
    }

    .header-right .username {
        display: none;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .kanban-board {
        grid-template-columns: 1fr;
    }

    .task-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .task-filters .filter-group {
        width: 100%;
    }

    .task-filters select {
        flex: 1;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 24px;
    }

    .container {
        padding: var(--spacing-md);
    }

    .modal {
        width: 95%;
        margin: var(--spacing-md);
    }
}