/* ═══════════ 瑞邦供应链 · 库存预警系统 · 企业级 ERP 主题 ═══════════ */
:root {
  --bg-base: #f5f7fa;
  --bg-card: #ffffff;
  --bg-sidebar: #1b2a4a;
  --bg-sidebar-hover: #243558;
  --bg-sidebar-active: #2d4470;
  --bg-topbar: #ffffff;
  --bg-input: #f0f3f8;
  --border: #e2e8f0;
  --border-light: #edf2f7;
  --border-sidebar: rgba(255,255,255,.08);
  --text: #1a202c;
  --text2: #4a5568;
  --text3: #a0aec0;
  --text-white: #ffffff;
  --text-sidebar: rgba(255,255,255,.72);
  --text-sidebar-active: #ffffff;
  --primary: #3182ce;
  --primary-light: #ebf8ff;
  --primary-dark: #2b6cb0;
  --danger: #e53e3e;
  --danger-light: #fff5f5;
  --danger-border: #feb2b2;
  --warning: #dd6b20;
  --warning-light: #fffaf0;
  --warning-border: #fbd38d;
  --slow: #d69e2e;
  --slow-light: #fffff0;
  --slow-border: #fefcbf;
  --success: #38a169;
  --success-light: #f0fff4;
  --success-border: #c6f6d5;
  --sidebar-w: 230px;
  --topbar-h: 56px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.05), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.08);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
body { font: 13.5px/1.6 'Inter', -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif; background: var(--bg-base); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; }
::selection { background: var(--primary); color: #fff; }

/* ── 登录 ── */
.login-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #1b2a4a 0%, #2d4470 50%, #1b2a4a 100%); }
.login-card { width: 400px; background: #fff; border-radius: 16px; padding: 48px 40px 36px; text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,.18); }
.login-logo { margin-bottom: 28px; }
.logo-icon { font-size: 32px; color: var(--primary); display: block; margin-bottom: 8px; }
.logo-icon.small { font-size: 20px; margin: 0; }
.login-card h1 { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.login-card > p { color: var(--text3); font-size: 13px; margin-top: 4px; }
.login-card footer { color: var(--text3); font-size: 11px; margin-top: 24px; border-top: 1px solid var(--border); padding-top: 16px; }
.login-card form { text-align: left; margin-top: 28px; }
.login-card label { display: block; color: var(--text2); font-size: 12px; font-weight: 600; margin-bottom: 6px; }
.login-card input[type="password"] { display: block; width: 100%; height: 44px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); padding: 0 14px; font: inherit; outline: none; transition: border-color .2s, box-shadow .2s; }
.login-card input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(49,130,206,.15); }
.error-text { color: var(--danger); font-size: 12px; margin-top: 10px; text-align: center; }

/* ── 按钮 ── */
.btn-primary { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 20px; border: 0; border-radius: var(--radius-sm); background: var(--primary); color: #fff; font: 600 13px inherit; cursor: pointer; transition: background .15s, box-shadow .15s; box-shadow: 0 1px 2px rgba(49,130,206,.3); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; height: 36px; padding: 0 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff; color: var(--text2); font: 500 13px inherit; cursor: pointer; transition: all .15s; }
.btn-secondary:hover { background: var(--bg-input); border-color: var(--text3); }
.btn-ghost { height: 34px; border: 1px solid var(--border-sidebar); border-radius: var(--radius-sm); background: rgba(255,255,255,.06); color: var(--text-sidebar); font: 500 12px inherit; cursor: pointer; transition: background .15s; }
.btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-text { border: 0; background: none; color: var(--primary); font: 600 12px inherit; cursor: pointer; padding: 4px 6px; }
.btn-text:hover { text-decoration: underline; }
.btn-icon { border: 0; background: none; color: var(--text3); font-size: 16px; cursor: pointer; }
.full { width: 100%; }
button:disabled { opacity: .5; cursor: not-allowed !important; }
.btn-primary.full { margin-top: 16px; height: 44px; font-size: 14px; }

/* ── 主布局 ── */
.app { display: flex; min-height: 100vh; }
.sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: var(--sidebar-w); background: var(--bg-sidebar); display: flex; flex-direction: column; z-index: 100; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 18px 16px; border-bottom: 1px solid var(--border-sidebar); }
.sidebar-brand strong { display: block; font-size: 14px; color: #fff; font-weight: 700; }
.sidebar-brand small { display: block; color: rgba(255,255,255,.4); font-size: 9px; letter-spacing: 1.2px; font-weight: 600; margin-top: 2px; }
.sidebar-nav { flex: 1; padding: 10px 8px; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--text-sidebar); font-weight: 500; font-size: 13px; margin-bottom: 2px; transition: background .15s, color .15s; position: relative; }
.nav-item i { font-style: normal; font-size: 15px; width: 20px; text-align: center; opacity: .85; }
.nav-item:hover { background: var(--bg-sidebar-hover); color: rgba(255,255,255,.92); }
.nav-item.active { background: var(--bg-sidebar-active); color: var(--text-sidebar-active); font-weight: 600; }
.badge { position: absolute; right: 10px; background: var(--danger); color: #fff; font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: 99px; min-width: 18px; text-align: center; }
.sidebar-footer { padding: 12px 12px 14px; border-top: 1px solid var(--border-sidebar); }
.sync-ind { display: flex; align-items: center; gap: 6px; font-size: 11px; color: rgba(255,255,255,.4); margin-bottom: 8px; }
.sync-ind .dot { width: 6px; height: 6px; border-radius: 50%; background: rgba(255,255,255,.25); flex-shrink: 0; }
.sync-ind.online .dot { background: var(--success); box-shadow: 0 0 4px var(--success); }

.main { flex: 1; margin-left: var(--sidebar-w); min-height: 100vh; }
.topbar { height: var(--topbar-h); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; border-bottom: 1px solid var(--border); background: var(--bg-topbar); position: sticky; top: 0; z-index: 50; }
.topbar h2 { font-size: 16px; font-weight: 700; color: var(--text); }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.sync-time { font-size: 11px; color: var(--text3); }
.page { padding: 22px 24px 32px; animation: fadeIn .2s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ── 时间选择器 ── */
.period-tabs { display: inline-flex; background: var(--bg-input); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; }
.period-tabs button { height: 32px; padding: 0 14px; border: 0; background: transparent; color: var(--text2); font: 500 12px inherit; cursor: pointer; transition: all .15s; border-right: 1px solid var(--border); }
.period-tabs button:last-child { border-right: 0; }
.period-tabs button:hover { background: rgba(49,130,206,.06); }
.period-tabs button.active { background: var(--primary); color: #fff; }

/* ── 数据卡片 ── */
.cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 22px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); position: relative; }
.card .card-icon { position: absolute; top: 16px; right: 16px; width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.card .card-label { font-size: 12px; color: var(--text3); font-weight: 500; margin-bottom: 6px; }
.card .card-value { font-size: 26px; font-weight: 800; color: var(--text); letter-spacing: -0.8px; line-height: 1.2; }
.card .card-sub { font-size: 11px; color: var(--text3); margin-top: 6px; }
.card .card-trend { font-size: 11px; font-weight: 600; margin-top: 6px; }
.card .card-trend.up { color: var(--success); }
.card .card-trend.down { color: var(--danger); }
.card.danger { border-left: 3px solid var(--danger); }
.card.danger .card-value { color: var(--danger); }
.card.danger .card-icon { background: var(--danger-light); color: var(--danger); }
.card.warning .card-icon { background: var(--warning-light); color: var(--warning); }
.card.slow { border-left: 3px solid var(--slow); }
.card.slow .card-value { color: var(--slow); }
.card.slow .card-icon { background: var(--slow-light); color: var(--slow); }
.card.accent .card-icon { background: var(--primary-light); color: var(--primary); }
.card.success .card-icon { background: var(--success-light); color: var(--success); }

/* ── 面板 ── */
.panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 18px; overflow: hidden; }
.panel-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--border-light); }
.panel-header h3 { font-size: 14px; font-weight: 700; color: var(--text); }
.panel-body { padding: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; }
.chart-wrap { height: 260px; position: relative; }

/* ── 工具栏 ── */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.spacer { flex: 1; }
.search-box { display: flex; align-items: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0 10px; width: 280px; box-shadow: var(--shadow); transition: border-color .2s; }
.search-box:focus-within { border-color: var(--primary); }
.search-box input { border: 0; background: none; color: var(--text); outline: 0; width: 100%; height: 36px; font: inherit; }
.search-box input::placeholder { color: var(--text3); }
select, .input-sm { height: 36px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); padding: 0 10px; font: inherit; cursor: pointer; box-shadow: var(--shadow); }
.input-sm { width: 180px; cursor: text; }
.inline-label { font-size: 13px; color: var(--text2); font-weight: 600; }
.toolbar-info { font-size: 13px; color: var(--text2); font-weight: 500; }
.page-desc { color: var(--text2); font-size: 13px; margin-bottom: 16px; padding: 12px 16px; border-left: 3px solid var(--danger); background: var(--danger-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* ── 表格 ── */
.table-responsive { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th { text-align: left; font-size: 11px; font-weight: 600; color: var(--text3); letter-spacing: .3px; text-transform: uppercase; padding: 10px 14px; background: var(--bg-input); border-bottom: 1px solid var(--border); }
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--primary); }
th .sort-arrow { font-size: 10px; margin-left: 3px; }
td { padding: 11px 14px; border-bottom: 1px solid var(--border-light); vertical-align: middle; font-size: 13px; }
tbody tr { transition: background .1s; }
tbody tr:hover { background: rgba(49,130,206,.03); }
td strong { display: block; color: var(--text); font-weight: 600; }
td small { display: block; color: var(--text3); font-size: 11px; margin-top: 1px; }
.num { text-align: right; font-variant-numeric: tabular-nums; font-weight: 500; }
.negative { color: var(--danger) !important; font-weight: 600; }
.empty-row { text-align: center; padding: 36px !important; color: var(--text3); }

/* ── 状态标签 ── */
.tag { display: inline-flex; padding: 3px 10px; border-radius: 4px; font-size: 11px; font-weight: 600; letter-spacing: .2px; }
.tag-danger { color: var(--danger); background: var(--danger-light); border: 1px solid var(--danger-border); }
.tag-slow { color: #92400e; background: #fffbeb; border: 1px solid #fde68a; }
.tag-warning { color: #9a3412; background: var(--warning-light); border: 1px solid var(--warning-border); }
.tag-normal { color: #276749; background: var(--success-light); border: 1px solid var(--success-border); }
.tag-excluded { color: var(--text3); background: var(--bg-input); border: 1px solid var(--border); }

/* ── 分页 ── */
.pagination { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; }
.pagination .page-btns { display: flex; gap: 4px; }
.pagination button { height: 32px; min-width: 32px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff; color: var(--text2); font: 500 12px inherit; cursor: pointer; }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:hover:not(.active):not(:disabled) { background: var(--bg-input); }
.page-info { font-size: 12px; color: var(--text3); }

/* ── 弹窗 ── */
.modal-overlay { position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.35); backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; }
.modal { width: min(860px, calc(100vw - 24px)); max-height: calc(100vh - 40px); overflow-y: auto; background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg), 0 20px 80px rgba(0,0,0,.12); }
.modal header { display: flex; align-items: center; justify-content: space-between; padding: 16px 22px; border-bottom: 1px solid var(--border); }
.modal header h2 { font-size: 15px; font-weight: 700; }
.modal-close { border: 0; background: none; color: var(--text3); font-size: 24px; cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 22px; }
.detail-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.detail-box { background: var(--bg-input); border-radius: var(--radius-sm); padding: 14px; }
.detail-box .label { font-size: 11px; color: var(--text3); font-weight: 500; }
.detail-box .val { font-size: 17px; font-weight: 700; margin-top: 4px; color: var(--text); }
.modal h3 { font-size: 13px; color: var(--primary); margin: 18px 0 10px; font-weight: 700; }

/* ── 表单 ── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid label { font-size: 12px; color: var(--text2); font-weight: 600; }
.form-grid input, .form-grid select { display: block; width: 100%; height: 38px; margin-top: 5px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); padding: 0 10px; font: inherit; outline: none; transition: border-color .2s, box-shadow .2s; }
.form-grid input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(49,130,206,.1); }
.form-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

/* ── 库存健康度仪表 ── */
.health-bar { display: flex; height: 8px; border-radius: 4px; overflow: hidden; background: var(--bg-input); margin-top: 10px; }
.health-bar span { transition: width .4s ease; }
.health-bar .bar-danger { background: var(--danger); }
.health-bar .bar-slow { background: var(--slow); }
.health-bar .bar-warning { background: var(--warning); }
.health-bar .bar-normal { background: var(--success); }

/* ── 响应式 ── */
@media (max-width: 1200px) { .cards { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px) {
  .sidebar { width: 56px; }
  .sidebar-brand div, .nav-item span, .sidebar-footer > *:not(.btn-ghost), .nav-item .badge { display: none; }
  .nav-item { justify-content: center; padding: 11px; }
  .btn-ghost { font-size: 0; padding: 0 10px; }
  .main { margin-left: 56px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .detail-grid { grid-template-columns: 1fr 1fr; }
  .search-box { width: 100%; }
}
@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .page { padding: 14px; }
}

.customer-summary-cards { grid-template-columns: repeat(4, 1fr); }
.customer-search { width: 260px; }
.customer-help { color: var(--text2); font-size: 13px; line-height: 1.9; }
.customer-help p { margin-bottom: 12px; }
.customer-help strong { color: var(--text); }
@media (max-width: 1200px) { .customer-summary-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .customer-summary-cards { grid-template-columns: 1fr; } .customer-search { width: 100%; } }