/* ============================================
   自动出餐系统 - 专业后台管理风格
   ============================================ */

:root {
    --primary: #1890ff;
    --primary-dark: #096dd9;
    --success: #52c41a;
    --warning: #faad14;
    --danger: #ff4d4f;
    --text-primary: #262626;
    --text-secondary: #595959;
    --text-muted: #8c8c8c;
    --bg-body: #f0f2f5;
    --bg-sidebar: #001529;
    --bg-sidebar-hover: #1890ff;
    --bg-card: #ffffff;
    --border: #e8e8e8;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.03);
    --shadow: 0 2px 8px rgba(0,0,0,0.06);
    --radius: 4px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5715;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   登录页
   ============================================ */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1890ff 0%, #722ed1 100%);
}

.login-box {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.12);
    padding: 40px;
    width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 32px;
    font-size: 14px;
}

/* ============================================
   表单元素
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #d9d9d9;
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
    background: #fff;
    color: var(--text-primary);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-group input::placeholder {
    color: #bfbfbf;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid #d9d9d9;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-family: inherit;
    background: #fff;
    color: var(--text-primary);
}

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

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

.btn-secondary {
    background: #fff;
    border-color: #d9d9d9;
    color: var(--text-primary);
}

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

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

.btn-danger:hover {
    background: #fff1f0;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* ============================================
   后台整体布局
   ============================================ */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 200px;
    background: var(--bg-sidebar);
    color: rgba(255,255,255,0.65);
    flex-shrink: 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar .logo {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    gap: 10px;
}

.sidebar .menu {
    padding-top: 16px;
}

.sidebar .menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.65);
}

.sidebar .menu-item:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sidebar .menu-item.active {
    color: #fff;
    background: var(--primary);
}

.sidebar .menu-item .icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 200px;
    display: flex;
    flex-direction: column;
}

/* 顶部栏 */
.topbar {
    height: 64px;
    background: #fff;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar .breadcrumb {
    color: var(--text-muted);
    font-size: 14px;
}

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

.topbar .user-info .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* 内容区 */
.content-area {
    padding: 24px;
    flex: 1;
}

/* ============================================
   卡片
   ============================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
}

.card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 24px;
}

/* ============================================
   筛选栏
   ============================================ */
.filter-bar {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

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

.filter-item label {
    color: var(--text-secondary);
    font-size: 14px;
    white-space: nowrap;
}

.filter-item input,
.filter-item select {
    width: 200px;
    padding: 6px 12px;
    border: 1px solid #d9d9d9;
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
}

.filter-item input:focus,
.filter-item select:focus {
    border-color: var(--primary);
}

/* ============================================
   标签页
   ============================================ */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.tab {
    padding: 12px 16px;
    cursor: pointer;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 500;
}

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

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

table th,
table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table th {
    background: #fafafa;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}

table td {
    color: var(--text-primary);
    font-size: 14px;
}

table tr:hover td {
    background: #fafafa;
}

/* ============================================
   状态标签
   ============================================ */
.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    line-height: 20px;
}

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

.tag-warning {
    background: #fffbe6;
    color: #faad14;
    border: 1px solid #ffe58f;
}

.tag-danger {
    background: #fff1f0;
    color: #ff4d4f;
    border: 1px solid #ffa39e;
}

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

/* ============================================
   模态框
   ============================================ */
.modal-mask {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.45);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-mask.show {
    display: flex;
}

.modal {
    background: #fff;
    border-radius: 8px;
    width: 600px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.modal-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 18px;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* ============================================
   配置表单
   ============================================ */
.config-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.config-item {
    display: flex;
    flex-direction: column;
}

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

.config-item input {
    padding: 8px 12px;
    border: 1px solid #d9d9d9;
    border-radius: var(--radius);
    font-size: 14px;
    transition: all 0.2s;
}

.config-item input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

/* ============================================
   复选框
   ============================================ */
input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

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

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}