/* ============================================
   全局样式
   ============================================ */

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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --sidebar-width: 240px;
}

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

/* ============================================
   登录界面
   ============================================ */

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

.login-box {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 5px;
    font-size: 28px;
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 14px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-hint {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

/* ============================================
   主界面布局
   ============================================ */

.main-container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    background: #1e293b;
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #334155;
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 5px;
}

.sidebar-header .version {
    font-size: 12px;
    color: #94a3b8;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.2s;
    gap: 12px;
}

.sidebar-nav a:hover {
    background: #334155;
    color: white;
}

.sidebar-nav a.active {
    background: var(--primary-color);
    color: white;
}

.sidebar-nav .icon {
    font-size: 18px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid #334155;
}

.user-info {
    margin-bottom: 10px;
    color: #cbd5e1;
    font-size: 14px;
}

.btn-logout {
    width: 100%;
    padding: 8px;
    background: transparent;
    border: 1px solid #475569;
    color: #cbd5e1;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-logout:hover {
    background: #334155;
    color: white;
}

/* 内容区 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 顶部状态栏 */
.top-bar {
    background: white;
    padding: 15px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    font-size: 20px;
    font-weight: 600;
}

.status-indicators {
    display: flex;
    gap: 20px;
    font-size: 14px;
}

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

.status-item span {
    color: var(--text-secondary);
}

.status-item .connected,
.status-item .online {
    color: var(--success-color);
    font-weight: 500;
}

/* 页面内容 */
.page-content {
    padding: 30px;
    flex: 1;
}

/* ============================================
   卡片组件
   ============================================ */

.card {
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.card h3 {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 16px;
    font-weight: 600;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    padding: 0;
    border: none;
    margin: 0;
}

.card-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ============================================
   表单组件
   ============================================ */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

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

/* ============================================
   按钮组件
   ============================================ */

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

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

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-small {
    padding: 4px 12px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-danger {
    background: var(--danger-color);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #dc2626;
}

/* ============================================
   表格组件
   ============================================ */

.table-container {
    overflow-x: auto;
}

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

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.data-table th {
    background: var(--bg-color);
    font-weight: 600;
    color: var(--text-secondary);
}

.data-table tbody tr:hover {
    background: #f1f5f9;
}

/* ============================================
   状态指示
   ============================================ */

.status-online,
.online,
.connected {
    color: var(--success-color);
}

.status-offline,
.offline,
.disconnected {
    color: var(--text-secondary);
}

.status-running {
    color: var(--success-color);
    font-weight: 500;
}

.status-stopped {
    color: var(--text-secondary);
}

.status-paused {
    color: var(--warning-color);
}

/* ============================================
   价格涨跌颜色
   ============================================ */

.price-up,
.buy {
    color: #ef4444;
}

.price-down,
.sell {
    color: #10b981;
}

.price-flat {
    color: var(--text-primary);
}

.pnl-positive {
    color: #ef4444;
}

.pnl-negative {
    color: #10b981;
}

/* ============================================
   总览页面网格
   ============================================ */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.status-list,
.account-info,
.position-summary,
.orders-summary {
    padding: 15px;
}

.status-row,
.account-row,
.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.status-row:last-child,
.account-row:last-child,
.summary-row:last-child {
    border-bottom: none;
}

.amount {
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

/* ============================================
   交易页面网格
   ============================================ */

.trading-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 20px;
}

.order-form {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* ============================================
   日志组件
   ============================================ */

.logs-card {
    min-height: 400px;
}

.logs-container {
    padding: 15px;
    max-height: 500px;
    overflow-y: auto;
    background: #1e293b;
    color: #e2e8f0;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    border-radius: 0 0 8px 8px;
}

.log-entry {
    display: flex;
    gap: 10px;
    padding: 4px 0;
    border-bottom: 1px solid #334155;
}

.log-entry:last-child {
    border-bottom: none;
}

.log-time {
    color: #94a3b8;
    min-width: 140px;
}

.log-level {
    min-width: 70px;
    font-weight: 600;
}

.log-debug .log-level {
    color: #64748b;
}

.log-info .log-level {
    color: #3b82f6;
}

.log-warning .log-level {
    color: #f59e0b;
}

.log-error .log-level {
    color: #ef4444;
}

.log-message {
    flex: 1;
    word-break: break-all;
}

/* ============================================
   搜索输入
   ============================================ */

.search-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    min-width: 200px;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ============================================
   无数据提示
   ============================================ */

.no-data {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
}

/* ============================================
   错误提示
   ============================================ */

.error-message {
    background: #fef2f2;
    color: var(--danger-color);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    border: 1px solid #fecaca;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
    .trading-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .status-indicators {
        flex-direction: column;
        gap: 5px;
    }

    .card-actions {
        flex-direction: column;
    }
}