/* ===================================================================
 * 系规必背 · 管理后台
 *
 * 风格：和主 App 保持一致（暗色 + 紫蓝 primary + 同字体）。
 * 不引入任何 CSS 框架，纯手写。
 * =================================================================== */

:root {
    --bg: #0a0b14;
    --bg-2: #15172a;
    --bg-3: #1e2138;
    --text: #f0f2ff;
    --text-2: #a3a8c5;
    --text-muted: #6b7099;
    --border: #2a2e4a;
    --primary: #6366f1;
    --primary-hover: #7c7ff3;
    --success: #10b981;
    --warn: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI',
                 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}
code { font-family: ui-monospace, 'SF Mono', Menlo, monospace; background: var(--bg-3); padding: 1px 5px; border-radius: 4px; font-size: 12px; }

/* ============= 登录页 ============= */
#loginBox {
    position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
    background: var(--bg);
}
#loginBox .login-card {
    width: min(420px, 90vw);
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
}
#loginBox h1 { margin: 0 0 4px; font-size: 22px; }
#loginBox .sub { color: var(--text-2); margin: 0 0 20px; font-size: 13px; }
#loginBox .err { color: var(--warn); margin-top: 8px; min-height: 18px; font-size: 12px; }
#loginBox .login-actions { display: flex; gap: 8px; margin-top: 16px; }
#loginBox .login-actions .btn { flex: 1; }
#loginBox .hint { color: var(--text-muted); font-size: 12px; margin-top: 14px; }

/* ============= 主框架 ============= */
#app { display: flex; flex-direction: column; height: 100vh; }

/* 顶栏 */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 20px;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.topbar h1 { margin: 0; font-size: 16px; }
.topbar .right { display: flex; align-items: center; gap: 12px; }
.mode-badge {
    padding: 3px 10px; border-radius: 12px; font-size: 12px; font-weight: 600;
}
.mode-real { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.mode-mock { background: rgba(245, 158, 11, 0.15); color: var(--warn); }

/* 侧导航 + 主内容 */
.body { display: flex; flex: 1; overflow: hidden; }
.sidenav {
    width: 200px;
    background: var(--bg-2);
    border-right: 1px solid var(--border);
    padding: 12px 0;
    flex-shrink: 0;
    overflow-y: auto;
}
.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 20px; cursor: pointer;
    color: var(--text-2);
    transition: background 0.15s, color 0.15s;
    font-size: 14px;
}
.nav-item:hover { background: var(--bg-3); color: var(--text); }
.nav-item.active { background: rgba(99, 102, 241, 0.15); color: var(--primary); border-left: 3px solid var(--primary); padding-left: 17px; }
.nav-icon { font-size: 16px; }

#main { flex: 1; overflow-y: auto; padding: 24px 28px; }
#main h2 { margin: 0 0 20px; font-size: 20px; }
#main h3 { margin: 24px 0 12px; font-size: 15px; color: var(--text-2); }

/* ============= 通用组件 ============= */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 7px 14px; border: 1px solid var(--border); border-radius: 6px;
    background: var(--bg-3); color: var(--text);
    font-size: 13px; cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
    font-family: inherit;
}
.btn:hover { background: #2a2e4a; }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--bg-3); color: var(--text); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.sel, .input, .textarea {
    padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px;
    background: var(--bg-3); color: var(--text);
    font-size: 13px; font-family: inherit;
    outline: none;
}
.sel:focus, .input:focus, .textarea:focus { border-color: var(--primary); }
.textarea { width: 100%; font-family: ui-monospace, monospace; resize: vertical; }

.card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px 20px;
    margin-bottom: 18px;
}
.card h3 { margin-top: 0; }

.empty { color: var(--text-muted); padding: 18px; text-align: center; font-size: 13px; }
.error { color: var(--danger); padding: 10px 14px; background: rgba(239, 68, 68, 0.08); border-radius: 6px; }
.warn { color: var(--warn); padding: 10px 14px; background: rgba(245, 158, 11, 0.08); border-radius: 6px; }
.loading { color: var(--text-muted); padding: 24px; text-align: center; }
.about { line-height: 2; color: var(--text-2); font-size: 13px; }

/* ============= 统计卡 ============= */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px 16px;
}
.stat-card-label { color: var(--text-2); font-size: 12px; }
.stat-card-value { font-size: 28px; font-weight: 700; color: var(--text); margin-top: 6px; display: flex; align-items: baseline; gap: 4px; }
.stat-card-unit { font-size: 13px; color: var(--text-muted); font-weight: 400; }

/* ============= 趋势条 ============= */
.trend-box {
    display: flex; align-items: flex-end; gap: 14px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px 20px;
    height: 200px;
}
.trend-bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; }
.trend-bar-val { font-size: 12px; color: var(--text-2); }
.trend-bar {
    width: 100%; max-width: 40px;
    background: linear-gradient(180deg, var(--primary), #4338ca);
    border-radius: 4px 4px 0 0;
    flex: 1;
    min-height: 4px;
}
.trend-bar-day { font-size: 11px; color: var(--text-muted); }

/* ============= 表格 ============= */
.data-table {
    width: 100%; border-collapse: collapse;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 12px;
}
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
.data-table th { background: var(--bg-3); color: var(--text-2); font-weight: 600; font-size: 12px; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(99, 102, 241, 0.04); }
.data-table .code { font-size: 12px; }

/* SKU 标签 */
.sku-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* 状态标签 */
.status-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}
.status-active { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.status-disabled { background: rgba(107, 114, 128, 0.18); color: var(--text-muted); }
.status-pending { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.status-used { background: rgba(16, 185, 129, 0.18); color: var(--success); }
.status-expired { background: rgba(239, 68, 68, 0.16); color: #f87171; }

/* ============= 批量操作条 ============= */
.bulk-bar {
    display: flex; align-items: center; gap: 10px; margin-bottom: 12px;
    padding: 8px 12px; background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.3); border-radius: 8px;
}
.bulk-count { font-weight: 600; color: var(--text); font-size: 13px; }

/* 表格多选 */
.data-table .row-cb { width: 16px; height: 16px; cursor: pointer; }
.data-table tr.row-selected td { background: rgba(99, 102, 241, 0.08); }

/* ============= 商品档位选择 ============= */
.preset-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 6px 0 14px; }
.preset-btn {
    text-align: left; padding: 10px 12px; border: 1px solid var(--border);
    border-radius: 8px; background: var(--bg-3); cursor: pointer; color: var(--text);
    transition: all .15s;
}
.preset-btn:hover { border-color: var(--primary); }
.preset-btn.active { border-color: var(--primary); background: rgba(99, 102, 241, 0.12); box-shadow: 0 0 0 2px rgba(99,102,241,0.25); }
.preset-label { font-weight: 700; font-size: 14px; }
.preset-hint { font-size: 11px; color: var(--text-2); margin-top: 2px; }
.preset-price { font-size: 12px; color: var(--success); font-weight: 700; margin-top: 4px; }

.row-actions { display: flex; gap: 6px; }

/* ============= 工具栏 ============= */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar-spacer { flex: 1; }
.toolbar .sel, .toolbar .input { min-width: 140px; }
.toolbar .input { flex: 0 1 240px; }
/* 工具栏内所有控件统一高度：某些字形（⤓ 等）行盒偏大会把按钮撑高 */
.toolbar .btn, .toolbar .sel, .toolbar .input {
    height: 34px; box-sizing: border-box; padding-top: 0; padding-bottom: 0;
}
.toolbar .btn { white-space: nowrap; }

/* ============= 分页 ============= */
.pagination { display: flex; align-items: center; gap: 10px; justify-content: flex-end; padding: 8px 0; }
.pag-info { color: var(--text-2); font-size: 12px; }

/* ============= 表单 ============= */
.form-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.form-row-label { flex: 0 0 90px; width: 90px; color: var(--text-2); font-size: 13px; }
.form-row .input { flex: 0 0 200px; }
.form-row .hint-inline { color: var(--text-3); font-size: 12px; }
.form-row-check { align-items: center; padding-left: 130px; color: var(--text-2); font-size: 12px; }
.order-form, .lookup-form { display: block; }

/* ============= 模态框 ============= */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.modal {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 22px;
    width: min(420px, 90vw);
    box-shadow: var(--shadow);
}
.modal-wide { width: min(640px, 92vw); }
.modal-title { font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.modal-body { margin-bottom: 14px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.modal-hint { color: var(--text-muted); font-size: 12px; margin-bottom: 12px; padding: 8px 12px; background: var(--bg-3); border-radius: 6px; }

/* ============= Toast ============= */
#toastBox {
    position: fixed; bottom: 24px; right: 24px;
    z-index: 9999;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-size: 13px;
    max-width: 360px;
    transition: opacity 0.3s;
}
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warn { border-left: 3px solid var(--warn); }
.toast-info { border-left: 3px solid var(--primary); }

/* ============= 查询结果 ============= */
.result-block {
    background: var(--bg-3);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 14px;
    line-height: 1.8;
}
.result-block ul { margin: 6px 0 0 0; padding-left: 20px; }
.result-block ul li { padding: 2px 0; }
.result-block code { background: var(--bg); }

/* 响应式 */
@media (max-width: 720px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .sidenav { width: 60px; }
    .nav-item { padding: 10px; justify-content: center; }
    .nav-item span:not(.nav-icon) { display: none; }
    #main { padding: 16px; }
    .form-row-label { min-width: 100px; }
    .form-row-check { padding-left: 0; }
}