:root{
  --primary:#e63900; --bg:#f4f6fb; --card:#fff; --text:#1a2233; --text-muted:#8a94a6;
  --border:#e5e8f0; --success:#16a34a; --sidebar:#111c33; --sidebar-text:#c7d0e3;
  --radius:12px;
}
[data-theme="dark"]{
  --bg:#0f1420; --card:#182034; --text:#e8ecf5; --text-muted:#8b96ad; --border:#26314b;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text)}
.app-shell{display:flex;min-height:100vh}

.sidebar{width:264px;background:var(--sidebar);color:var(--sidebar-text);position:fixed;inset:0 auto 0 0;z-index:50;display:flex;flex-direction:column;transition:transform .25s,width .25s}
.sidebar.collapsed{width:76px}
.sidebar.collapsed .brand-text,.sidebar.collapsed .nav-label,.sidebar.collapsed .chevron{display:none}
.sidebar.collapsed .nav-sub{display:none}
.sidebar.collapsed .brand{justify-content:center}
.sidebar.collapsed .nav-link{justify-content:center;padding:11px 0}
.sidebar.collapsed .nav-link{position:relative}
.sidebar.collapsed .nav-link[data-tooltip]:hover::after{content:attr(data-tooltip);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);background:var(--card);color:var(--text);padding:7px 12px;border-radius:8px;font-size:12px;font-weight:500;white-space:nowrap;border:1px solid var(--border);box-shadow:0 8px 24px rgba(0,0,0,.25);z-index:100}
.app-shell.sb-collapsed .main-content{margin-left:76px}
.main-content{transition:margin-left .25s}
@media(max-width:1000px){.sidebar.collapsed{width:264px}.app-shell.sb-collapsed .main-content{margin-left:0}}
.sidebar-header{padding:18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:#fff}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--primary);display:grid;place-items:center;color:#fff}
.brand-name{display:block;font-weight:800;color:#fff;font-size:17px}
.brand-sub{display:block;font-size:11px;opacity:.7}
.sidebar-nav{flex:1;overflow-y:auto;padding:12px}
.nav-list{list-style:none;display:flex;flex-direction:column;gap:4px}
.nav-link{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;color:var(--sidebar-text);text-decoration:none;font-size:14px;cursor:pointer}
.nav-link:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-link.active{background:var(--primary);color:#fff}
.nav-link .chevron{margin-left:auto;transition:transform .2s}
.nav-link.open .chevron{transform:rotate(90deg)}
.nav-sub{list-style:none;overflow:hidden;max-height:0;transition:max-height .25s;margin-left:20px;border-left:1px solid rgba(255,255,255,.12);padding-left:8px}
.nav-sub .nav-link{padding:9px 10px;font-size:13px}
.nav-badge{font-size:9.5px;font-weight:800;letter-spacing:.6px;background:linear-gradient(135deg,#eab308,#fde047);color:#422006;padding:2px 7px;border-radius:999px;line-height:1.4;flex-shrink:0}
.nav-link.active .nav-badge{background:rgba(255,255,255,.25)}
.nav-count{margin-left:auto;font-size:11px;font-weight:800;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:#ef4444;color:#fff;display:inline-grid;place-items:center;flex-shrink:0}
.nav-sub .nav-count{margin-left:auto}
.sidebar-backdrop{display:none}

.main-content{flex:1;margin-left:264px;min-width:0}
.topbar{position:sticky;top:0;background:var(--card);border-bottom:1px solid var(--border);padding:12px 20px;display:flex;align-items:center;gap:14px;z-index:20}
.btn-icon{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:var(--card);cursor:pointer;display:grid;place-items:center;color:var(--text)}
.tb-title{font-size:18px}.tb-crumb{font-size:12px;color:var(--text-muted)}.tb-crumb-sep{margin:0 6px}.current{color:var(--primary)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.tu-trigger{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:12px;padding:6px 10px;background:var(--card);cursor:pointer;color:var(--text)}
.tu-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700}
.tu-role{font-size:11px;color:var(--text-muted);display:block}
.content{padding:20px}

.pos-layout{display:grid;grid-template-columns:1fr 360px;gap:16px}
.pos-left,.pos-right{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.pos-search-row{display:flex;gap:10px;margin-bottom:12px}
.field-input{display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:10px;padding:0 12px;background:var(--card)}
.field-input input{border:0;outline:0;flex:1;height:100%;background:transparent;color:var(--text)}
.pos-cats{display:flex;gap:8px;overflow-x:auto;margin-bottom:0;padding-bottom:4px;scrollbar-width:none}
.pos-cats::-webkit-scrollbar{display:none}
.pos-cat{white-space:nowrap;border:1px solid var(--border);border-radius:20px;padding:8px 14px;background:var(--card);cursor:pointer;color:var(--text);display:inline-flex;align-items:center;gap:6px}
.pos-cat.active{background:var(--text);color:var(--bg)}
.pos-cat-count{background:var(--bg);border:1px solid var(--border);border-radius:12px;font-size:11px;padding:1px 7px}
.pos-cat.active .pos-cat-count{background:transparent;border-color:currentColor}
.pos-cats-wrap{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.pos-cats-arrow{flex:0 0 28px;width:28px;height:28px;border-radius:50%;border:1px solid var(--border);background:var(--card);cursor:pointer;display:grid;place-items:center;color:var(--text)}
.pos-cats-arrow.disabled{opacity:.3;pointer-events:none}
.pos-cats{flex:1}
.pos-hist-btn{display:inline-flex;align-items:center;gap:6px;text-decoration:none;font-size:13px;white-space:nowrap}
.pos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;max-height:60vh;overflow:auto}
.pos-card{border:1px solid var(--border);border-radius:12px;overflow:hidden;cursor:pointer;background:var(--card);position:relative;transition:transform .12s,border-color .12s}
.pos-card:hover{border-color:var(--primary);transform:translateY(-1px)}
.pos-card.out{opacity:.6;cursor:not-allowed}
.pc-img{background:linear-gradient(135deg,#f1f3f9,#e2e7f2);height:84px;display:grid;place-items:center}
[data-theme="dark"] .pc-img{background:linear-gradient(135deg,#232d47,#1a2238)}
.pc-img-ph{font-size:34px}
.pc-stock{font-size:11px;font-weight:700;padding:4px 8px;background:#e8f7ee;color:#15803d}
.pc-stock.low{background:#fef3c7;color:#b45309}
.pc-stock.out{background:#fee2e2;color:#b91c1c}
.pc-body{padding:10px}
.pc-name{font-size:13px;font-weight:600;min-height:36px;line-height:1.25}
.pc-meta{display:flex;gap:6px;align-items:center;margin-top:4px;font-size:11px;color:var(--text-muted)}
.pc-meta code{background:var(--bg);padding:1px 5px;border-radius:5px}
.pos-empty{grid-column:1/-1;text-align:center;color:var(--text-muted);padding:24px;border:1px dashed var(--border);border-radius:12px}
.pos-cart-body{min-height:200px;max-height:40vh;overflow:auto;display:flex;flex-direction:column;gap:8px;margin:10px 0}
.cart-item{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--border);border-radius:10px;padding:8px}
.qty{display:flex;gap:6px;align-items:center}
.qty button{width:24px;height:24px;border-radius:6px;border:1px solid var(--border);cursor:pointer}
.pos-totals{border-top:1px dashed var(--border);padding-top:10px}
.qt-row{display:flex;justify-content:space-between;font-size:14px;padding:2px 0}
.qt-row.total{font-size:18px;font-weight:800}
.btn-primary{background:var(--primary);color:#fff;border:0;border-radius:10px;padding:12px;width:100%;cursor:pointer;font-weight:700}
.btn-primary:disabled{opacity:.4}
.btn-outline{border:1px solid var(--border);border-radius:10px;padding:10px 14px;background:var(--card);cursor:pointer;color:var(--text)}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}
code{background:var(--bg);padding:2px 6px;border-radius:6px}
[data-theme="dark"] .icon-sun{display:none}
[data-theme="light"] .icon-moon{display:none}
@media(max-width:1000px){.pos-layout{grid-template-columns:1fr}.main-content{margin-left:0}.sidebar{transform:translateX(-100%)}.sidebar.show{transform:none}.sidebar-backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40}}

.topbar-noti{position:relative}
.topbar-noti .btn-icon{position:relative}
.topbar-noti .badge{position:absolute;top:2px;right:2px;min-width:19px;height:19px;padding:0 5px;border-radius:999px;background:#ef4444;color:#fff;font-size:10.5px;font-weight:800;display:grid;place-items:center;border:2px solid var(--card)}
.noti-menu{position:absolute;right:0;top:calc(100% + 10px);width:min(350px,90vw);background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:0 16px 40px rgba(0,0,0,.18);display:none;overflow:hidden;z-index:60}
.topbar-noti.open .noti-menu{display:block}
.noti-head{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;border-bottom:1px solid var(--border);font-weight:800;font-size:14px}
.noti-count{font-size:11px;font-weight:800;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:var(--primary);color:#fff;display:inline-grid;place-items:center}
.noti-list{max-height:min(380px,70vh);overflow-y:auto;padding:7px}
.noti-item{display:flex;gap:11px;align-items:center;padding:10px;border-radius:10px;text-decoration:none;color:var(--text)}
.noti-item:hover{background:var(--bg)}
.noti-ico{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}
.noti-ico.n-red{color:#dc2626;background:rgba(220,38,38,.12)}
.noti-ico.n-amber{color:#d97706;background:rgba(245,158,11,.15)}
.noti-ico.n-blue{color:#2563eb;background:rgba(37,99,235,.12)}
.noti-body{display:flex;flex-direction:column;gap:1px;min-width:0;flex:1}
.noti-title{font-size:13px;font-weight:700}
.noti-meta{font-size:11.5px;color:var(--text-muted)}
.noti-arrow{color:var(--text-muted);flex-shrink:0}
.noti-empty{text-align:center;color:var(--text-muted);font-size:13px;padding:22px 10px}

.btn-icon svg{width:16px;height:16px;flex-shrink:0}
.cli-av svg{width:18px;height:18px}
.stat-icon svg{width:22px;height:22px}
.ph-icon svg{width:18px;height:18px}
.gift-badge svg{width:13px;height:13px;vertical-align:-2px}
.hist-gift svg{width:15px;height:15px;vertical-align:-2px}

.topbar-user{position:relative}
.tu-info{display:flex;flex-direction:column;align-items:flex-start;line-height:1.2}
.tu-name{font-size:13px;font-weight:700;color:var(--text)}
.tu-menu{position:absolute;right:0;top:calc(100% + 8px);background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.18);min-width:210px;display:none;z-index:70;overflow:hidden}
.topbar-user.open .tu-menu{display:block}
.tu-menu a,.tu-menu button{display:flex;align-items:center;gap:8px;width:100%;padding:10px 14px;font-size:13px;color:var(--text);text-decoration:none;background:none;border:0;cursor:pointer;text-align:left}
.tu-menu a:hover,.tu-menu button:hover{background:var(--bg)}
.tu-head{padding:10px 14px;border-bottom:1px solid var(--border);font-size:12px;color:var(--text-muted)}