:root{--primary:#2457e6;--primary-dark:#183ea8;--sidebar:#14203a;--sidebar-hover:#22345b;--bg:#f4f6fa;--card:#fff;--text:#1c2534;--muted:#6b7485;--border:#dde2ea;--success:#16885c;--danger:#c93f3f;--warning:#c77a00;--shadow:0 10px 30px rgba(26,42,80,.08)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,#15213a,#10192d);color:#fff;padding:22px 14px;overflow:auto}.brand{display:flex;gap:12px;align-items:center;padding:0 10px 22px;border-bottom:1px solid rgba(255,255,255,.1)}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,#4b7bff,#8aa8ff);font-weight:800;font-size:22px;box-shadow:0 8px 24px rgba(73,117,255,.35)}.brand strong{display:block;font-size:17px}.brand small{display:block;margin-top:4px;color:#aab5cb}.nav{display:grid;gap:5px;margin-top:18px}.nav a{display:flex;align-items:center;gap:12px;padding:12px 13px;border-radius:10px;color:#d9e0ed;font-size:14px}.nav a:hover,.nav a.active{background:var(--sidebar-hover);color:#fff}.nav .icon{width:22px;text-align:center}.sidebar-footer{margin-top:24px;padding:14px 10px;border-top:1px solid rgba(255,255,255,.1);color:#b9c2d3;font-size:12px}.main{min-width:0}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 28px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.topbar h1{font-size:20px;margin:0}.topbar-meta{display:flex;align-items:center;gap:14px}.user-chip{display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#e9efff;color:var(--primary);font-weight:700}.user-chip strong{display:block;font-size:13px}.user-chip small{display:block;color:var(--muted);font-size:12px}.content{padding:26px;max-width:1600px;margin:0 auto}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:20px}.page-header h2{margin:0 0 6px;font-size:24px}.page-header p{margin:0;color:var(--muted);font-size:14px}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.btn{appearance:none;border:1px solid var(--border);background:#fff;color:var(--text);border-radius:9px;padding:9px 15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:600;font-size:14px;min-height:40px}.btn:hover{filter:brightness(.98);transform:translateY(-1px)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-danger{background:#fff2f2;border-color:#ffd1d1;color:var(--danger)}.btn-success{background:#ecfbf5;border-color:#c9f1e0;color:var(--success)}.btn-sm{padding:6px 10px;min-height:32px;font-size:12px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}.card-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}.card-header h3{margin:0;font-size:16px}.card-body{padding:20px}.stats{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:16px;margin-bottom:20px}.stat{padding:19px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}.stat small{color:var(--muted);font-size:13px}.stat strong{display:block;font-size:27px;margin-top:10px;letter-spacing:-.5px}.stat .hint{font-size:12px;color:var(--success);margin-top:7px}.grid-2{display:grid;grid-template-columns:1.5fr 1fr;gap:18px}.grid-equal{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;white-space:nowrap}.table th{padding:12px 14px;text-align:left;background:#f8f9fc;color:var(--muted);font-weight:600;font-size:12px;border-bottom:1px solid var(--border)}.table td{padding:13px 14px;border-bottom:1px solid #edf0f5;font-size:13px;vertical-align:middle}.table tr:last-child td{border-bottom:0}.table tr:hover td{background:#fbfcff}.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;font-size:12px;background:#eef2ff;color:var(--primary)}.badge-success{background:#e9f8f1;color:var(--success)}.badge-danger{background:#fff0f0;color:var(--danger)}.badge-warning{background:#fff7e7;color:var(--warning)}.muted{color:var(--muted)}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.amount{font-variant-numeric:tabular-nums;font-weight:700}.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.input,.select,.textarea{width:100%;border:1px solid #cfd6e1;border-radius:9px;padding:10px 12px;background:#fff;color:var(--text);outline:none;min-height:42px}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,87,230,.12)}.textarea{min-height:92px;resize:vertical}.field label{display:block;margin-bottom:7px;font-size:13px;font-weight:600}.field .help{margin-top:6px;color:var(--muted);font-size:12px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-actions{display:flex;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--border)}.search-input{min-width:250px}.flash{padding:12px 15px;border-radius:10px;margin-bottom:18px;border:1px solid}.flash-success{background:#ecfbf5;border-color:#c9f1e0;color:#116b49}.flash-danger{background:#fff1f1;border-color:#ffd0d0;color:#9e2929}.empty{padding:44px 20px;text-align:center;color:var(--muted)}.detail-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.detail-item{padding:14px;border-radius:10px;background:#f8f9fc}.detail-item small{display:block;color:var(--muted);margin-bottom:6px}.detail-item strong{font-size:15px}.split-actions{display:flex;gap:8px;align-items:center}.inline-form{display:inline-flex;gap:7px;align-items:center}.login-page{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;background:#eef2fa}.login-hero{padding:72px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(145deg,#12203b,#2457e6);color:white;position:relative;overflow:hidden}.login-hero:before,.login-hero:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08)}.login-hero:before{width:380px;height:380px;right:-120px;top:-100px}.login-hero:after{width:260px;height:260px;left:-70px;bottom:-80px}.login-hero h1{font-size:44px;margin:0 0 18px;max-width:600px;position:relative}.login-hero p{font-size:17px;line-height:1.8;max-width:600px;color:#dbe5ff;position:relative}.login-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:30px;position:relative}.login-feature{background:rgba(255,255,255,.1);padding:15px;border-radius:12px;border:1px solid rgba(255,255,255,.12)}.login-panel{display:flex;align-items:center;justify-content:center;padding:40px}.login-box{width:min(430px,100%);background:#fff;padding:36px;border-radius:18px;box-shadow:0 25px 70px rgba(24,45,90,.18)}.login-box h2{margin:0 0 8px;font-size:27px}.login-box>p{margin:0 0 26px;color:var(--muted)}.login-box .field{margin-bottom:15px}.login-box .btn{width:100%;margin-top:8px}.pos-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(340px,.7fr);gap:18px;align-items:start}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.product-card{border:1px solid var(--border);border-radius:12px;padding:14px;background:#fff;cursor:pointer;text-align:left}.product-card:hover{border-color:var(--primary);box-shadow:0 8px 20px rgba(36,87,230,.1)}.product-card h4{margin:8px 0 6px;font-size:14px}.product-card .price{font-size:17px;color:var(--primary);font-weight:800}.cart{position:sticky;top:94px}.cart-line{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:12px 0;border-bottom:1px solid var(--border)}.qty{display:flex;align-items:center;gap:7px}.qty button{width:28px;height:28px;border:1px solid var(--border);background:#fff;border-radius:7px;cursor:pointer}.totals{display:grid;gap:9px;padding:15px 0}.total-row{display:flex;justify-content:space-between;color:var(--muted)}.total-row.final{font-size:19px;color:var(--text);font-weight:800;border-top:1px solid var(--border);padding-top:12px}.tabs-note{padding:12px;background:#fff8e8;border-radius:9px;color:#7a5a11;font-size:12px;margin-bottom:12px}.mobile-menu{display:none}.hide{display:none!important}
@media(max-width:1150px){.stats{grid-template-columns:repeat(3,1fr)}.product-grid{grid-template-columns:repeat(2,1fr)}.detail-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:850px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:50;left:-260px;width:244px;transition:left .2s}.sidebar.open{left:0}.mobile-menu{display:inline-flex}.topbar{padding:0 16px}.content{padding:18px}.stats{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-equal,.pos-layout{grid-template-columns:1fr}.cart{position:static}.form-grid{grid-template-columns:1fr}.login-page{grid-template-columns:1fr}.login-hero{display:none}.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stats,.product-grid,.grid-3{grid-template-columns:1fr}.detail-list{grid-template-columns:1fr}.page-header{flex-direction:column}.search-input{min-width:100%}.login-panel{padding:18px}.login-box{padding:25px}.content{padding:14px}.topbar-meta .merchant-label{display:none}}