:root{--blue:#1565d8;--blue2:#0d47a1;--navy:#0b2550;--yellow:#ffc928;--bg:#f2f6fc;--card:#fff;--line:#dfe6f1;--text:#16233a;--muted:#6b7a90;--red:#d93838;--green:#17a05d;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:var(--blue)}
.sidebar{position:fixed;inset:0 auto 0 0;width:210px;background:var(--navy);overflow-y:auto;z-index:20}
.sidebar .brand{display:block;padding:14px 16px;background:#fff}
.sidebar .brand img{width:100%;display:block}
.sidebar nav a{display:flex;gap:10px;align-items:center;color:#c9d6ee;text-decoration:none;padding:10px 18px;border-left:4px solid transparent}
.sidebar nav a i{font-style:normal;width:20px;text-align:center}
.sidebar nav a:hover{background:#13336a;color:#fff}
.sidebar nav a.on{background:#13336a;color:#fff;border-left-color:var(--yellow)}
.main{margin-left:210px;padding:24px;max-width:1400px}
.topbar{display:none}
h1{margin:0 0 18px;font-size:24px;color:var(--navy)}
h2{font-size:17px;margin:0 0 12px;color:var(--navy)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;border-top:4px solid var(--blue)}
.stat.y{border-top-color:var(--yellow)}.stat.g{border-top-color:var(--green)}.stat.r{border-top-color:var(--red)}
.stat small{color:var(--muted);display:block;margin-bottom:6px;text-transform:uppercase;font-size:11px;letter-spacing:.05em}
.stat b{font-size:22px}
table{width:100%;border-collapse:collapse}
th,td{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{font-size:12px;color:var(--muted);text-transform:uppercase;font-weight:600;background:#f7f9fd}
td.n,th.n{text-align:right;white-space:nowrap}
.tablewrap{overflow-x:auto}
input,select,textarea{font:inherit;padding:8px 10px;border:1px solid #c8d3e4;border-radius:8px;background:#fff;width:100%;color:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid #9cc2ff;border-color:var(--blue)}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px;font-weight:600}
.field{margin-bottom:12px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.row>*{flex:1;min-width:120px}
.row>.auto{flex:0 0 auto;min-width:0}
.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:8px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:var(--blue2)}
.btn.y{background:var(--yellow);color:var(--navy)}.btn.r{background:var(--red)}.btn.g{background:var(--green)}
.btn.o{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.big{padding:14px 20px;font-size:17px;width:100%}
.inline{display:inline}
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:700;background:#e6eefb;color:var(--blue2)}
.badge.r{background:#fde6e6;color:var(--red)}.badge.y{background:#fff3cc;color:#8a6500}.badge.g{background:#dff5ea;color:var(--green)}
.muted{color:var(--muted)}.red{color:var(--red)}.green{color:var(--green)}
.flash{padding:12px 16px;border-radius:10px;margin-bottom:16px;background:#dff5ea;color:#0d6b3c;font-weight:600}
.flash.err{background:#fde6e6;color:#9b1c1c}
.head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.head h1{margin:0}
.thumb{width:40px;height:40px;object-fit:cover;border-radius:8px;background:#eef2f8}
.bars{display:flex;align-items:flex-end;gap:4px;height:140px}
.bars div{flex:1;background:var(--blue);border-radius:4px 4px 0 0;min-height:2px;position:relative}
.bars div:hover{background:var(--yellow)}
.bars div span{position:absolute;bottom:-18px;left:50%;transform:translateX(-50%);font-size:10px;color:var(--muted)}
.tabs{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.tabs a{padding:7px 14px;border-radius:20px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--text)}
.tabs a.on{background:var(--blue);color:#fff;border-color:var(--blue)}
/* POS */
.pos{display:grid;grid-template-columns:1fr 400px;gap:16px;align-items:start}
.pos-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;max-height:calc(100vh - 190px);overflow-y:auto;padding:2px}
.pitem{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;cursor:pointer;text-align:left;font:inherit}
.pitem:hover{border-color:var(--blue);box-shadow:0 2px 8px #1565d822}
.pitem b{display:block;font-size:13px}.pitem small{color:var(--muted);display:block}
.pitem .p{color:var(--blue2);font-weight:700;margin-top:4px}
.pitem.out{opacity:.45}
.cart{position:sticky;top:16px}
.cart table td{padding:6px 4px}
.cart input.q{width:54px;padding:4px}.cart input.d{width:64px;padding:4px}
.total{font-size:26px;font-weight:800;color:var(--navy)}
.seg{display:flex;border:1px solid var(--blue);border-radius:8px;overflow:hidden}
.seg button{flex:1;border:0;background:#fff;color:var(--blue);padding:8px;font:inherit;font-weight:600;cursor:pointer}
.seg button.on{background:var(--blue);color:#fff}
/* receipt */
.receipt{max-width:340px;margin:0 auto;background:#fff;padding:18px;font-family:ui-monospace,Consolas,monospace;font-size:12px}
.receipt img{width:160px;display:block;margin:0 auto 6px}
.receipt table td{padding:3px 0;border:0}
.receipt hr{border:0;border-top:1px dashed #999}
.login{max-width:360px;margin:8vh auto;background:#fff;border-radius:16px;padding:28px;border:1px solid var(--line)}
.login img{width:100%;margin-bottom:16px}
@media print{.sidebar,.topbar,.noprint{display:none!important}.main{margin:0;padding:0}body{background:#fff}.card{border:0}}
@media (max-width:1000px){.pos{grid-template-columns:1fr}.cart{position:static}.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:800px){
  .sidebar{transform:translateX(-100%);transition:.2s}.nav-open .sidebar{transform:none}
  .topbar{display:flex;align-items:center;gap:10px;background:#fff;border-bottom:1px solid var(--line);padding:8px 12px;position:sticky;top:0;z-index:10}
  .topbar img{height:30px}.menu-btn{font-size:22px;background:none;border:0;cursor:pointer}
  .main{margin-left:0;padding:16px}.g2,.g3{grid-template-columns:1fr}
}