:root{
  --indigo:#4f46e5; --indigo-d:#4338ca; --indigo-l:#eef2ff;
  --ink:#1e293b; --muted:#64748b; --line:#e2e8f0; --bg:#f6f7fb;
  --green:#16a34a; --green-l:#dcfce7; --red:#dc2626; --red-l:#fee2e2;
  --amber:#d97706; --amber-l:#fef3c7; --white:#fff;
  --shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.04);
  --shadow-l:0 10px 30px rgba(15,23,42,.12);
  --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--ink);
  display:flex;font-size:14px;-webkit-font-smoothing:antialiased}

/* Sidebar */
.sidebar{width:230px;background:#0f1535;color:#c7cce0;display:flex;flex-direction:column;
  padding:20px 14px;flex-shrink:0;height:100vh;position:sticky;top:0}
.brand{display:flex;align-items:center;gap:11px;padding:6px 8px 22px}
.brand-mark{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,#6366f1,#a855f7);
  display:grid;place-items:center;font-weight:800;color:#fff;letter-spacing:.5px}
.brand-text b{display:block;color:#fff;font-size:16px;letter-spacing:.3px}
.brand-text span{font-size:11px;color:#8891b4}
nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-btn{display:flex;align-items:center;gap:11px;background:none;border:none;color:#aeb5d4;
  padding:11px 13px;border-radius:10px;font-size:14px;font-weight:500;cursor:pointer;text-align:left;
  font-family:inherit;transition:.15s}
.nav-btn .ic{font-size:16px}
.nav-btn:hover{background:#1b2348;color:#fff}
.nav-btn.active{background:var(--indigo);color:#fff;box-shadow:0 4px 12px rgba(79,70,229,.4)}
.sidebar-foot{font-size:12px;color:#8891b4;padding:10px 8px;display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:#64748b}
.dot.ok{background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.2)}
.dot.bad{background:#ef4444}

/* Layout */
main{flex:1;height:100vh;overflow:auto;padding:26px 30px}
.head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap}
.head h1{font-size:22px;font-weight:700}
.head p{color:var(--muted);font-size:13px;margin-top:2px}
.loader{display:grid;place-items:center;height:60vh;color:var(--muted)}

/* Cards / KPIs */
.grid{display:grid;gap:16px}
.kpis{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.kpi{padding:18px 20px}
.kpi .label{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.kpi .val{font-size:26px;font-weight:800;margin-top:7px;letter-spacing:-.5px}
.kpi .sub{font-size:12px;color:var(--muted);margin-top:3px}
.kpi .val.green{color:var(--green)} .kpi .val.indigo{color:var(--indigo)}

/* Caja layout */
.caja{display:grid;grid-template-columns:1fr 380px;gap:20px;height:calc(100vh - 52px)}
.col{display:flex;flex-direction:column;min-height:0;min-width:0}
.searchbar{display:flex;gap:10px;margin-bottom:14px}
input,select,button,textarea{font-family:inherit;font-size:14px}
.inp{flex:1;padding:13px 15px;border:1px solid var(--line);border-radius:11px;background:#fff;outline:none;transition:.15s}
.inp:focus{border-color:var(--indigo);box-shadow:0 0 0 3px var(--indigo-l)}
.chips{display:flex;gap:7px;overflow-x:auto;padding-bottom:10px;margin-bottom:6px}
.chip{padding:7px 13px;border:1px solid var(--line);background:#fff;border-radius:999px;cursor:pointer;
  white-space:nowrap;font-size:13px;color:var(--muted);font-weight:500;transition:.15s}
.chip.active{background:var(--indigo);color:#fff;border-color:var(--indigo)}

.prod-list{overflow:auto;flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:12px;align-content:start;padding-right:4px}
.prod{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px;cursor:pointer;
  transition:.12s;display:flex;flex-direction:column;gap:6px;position:relative}
.prod:hover{border-color:var(--indigo);box-shadow:var(--shadow-l);transform:translateY(-2px)}
.prod .nm{font-weight:600;font-size:13px;line-height:1.3;height:34px;overflow:hidden}
.prod .meta{font-size:11px;color:var(--muted)}
.prod .pr{font-size:17px;font-weight:800;color:var(--indigo)}
.prod .stk{position:absolute;top:10px;right:10px;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}
.stk.ok{background:var(--green-l);color:var(--green)}
.stk.low{background:var(--amber-l);color:var(--amber)}
.stk.zero{background:var(--red-l);color:var(--red)}

/* Carrito */
.cart{background:#fff;border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;
  box-shadow:var(--shadow);overflow:hidden}
.cart h2{padding:16px 18px;font-size:16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.cart h2 .clear{font-size:12px;color:var(--red);cursor:pointer;font-weight:500}
.cart-items{flex:1;overflow:auto;padding:8px}
.cart-empty{text-align:center;color:var(--muted);padding:40px 20px;font-size:13px}
.ci{display:flex;gap:10px;align-items:center;padding:10px;border-radius:10px}
.ci:hover{background:var(--bg)}
.ci .info{flex:1;min-width:0}
.ci .info .n{font-weight:600;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ci .info .p{font-size:12px;color:var(--muted)}
.qty{display:flex;align-items:center;gap:6px}
.qty button{width:26px;height:26px;border:1px solid var(--line);background:#fff;border-radius:7px;cursor:pointer;font-weight:700;color:var(--indigo)}
.qty span{min-width:22px;text-align:center;font-weight:600}
.ci .imp{font-weight:700;min-width:60px;text-align:right}
.ci .rm{color:var(--muted);cursor:pointer;font-size:16px;padding:0 2px}
.cart-foot{border-top:1px solid var(--line);padding:16px 18px;background:#fbfbfe}
.pay-row{display:flex;gap:8px;margin-bottom:12px}
.pay-row button{flex:1;padding:9px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;font-weight:600;color:var(--muted);font-size:13px}
.pay-row button.active{background:var(--indigo);color:#fff;border-color:var(--indigo)}
.total-row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}
.total-row .t{font-size:13px;color:var(--muted)}
.total-row .v{font-size:30px;font-weight:800;letter-spacing:-1px}
.btn{padding:13px;border:none;border-radius:11px;background:var(--indigo);color:#fff;font-weight:700;
  cursor:pointer;width:100%;font-size:15px;transition:.15s}
.btn:hover{background:var(--indigo-d)} .btn:disabled{opacity:.4;cursor:not-allowed}
.btn.sm{padding:8px 14px;width:auto;font-size:13px;border-radius:9px}
.btn.ghost{background:#fff;color:var(--indigo);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--indigo-l)}

/* Tablas */
table{width:100%;border-collapse:collapse;background:#fff}
.tbl-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.tbl-scroll{overflow:auto;max-height:calc(100vh - 220px)}
th{text-align:left;padding:12px 16px;font-size:11px;text-transform:uppercase;letter-spacing:.4px;
  color:var(--muted);background:#fafbff;position:sticky;top:0;border-bottom:1px solid var(--line);font-weight:700}
td{padding:12px 16px;border-bottom:1px solid #f1f5f9;font-size:13px}
tr:hover td{background:#fafbff}
.r{text-align:right} .c{text-align:center}
.pill{display:inline-block;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700}
.pill.green{background:var(--green-l);color:var(--green)}
.pill.amber{background:var(--amber-l);color:var(--amber)}
.pill.red{background:var(--red-l);color:var(--red)}
.pill.gray{background:#f1f5f9;color:var(--muted)}
.link{color:var(--indigo);cursor:pointer;font-weight:600}

.toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.toolbar .inp{flex:0 1 280px}
.sel{padding:11px 13px;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer}

/* Modal */
.modal-wrap{position:fixed;inset:0;background:rgba(15,23,42,.5);display:grid;place-items:center;z-index:50;padding:20px;backdrop-filter:blur(2px)}
.modal{background:#fff;border-radius:18px;width:100%;max-width:480px;box-shadow:var(--shadow-l);
  max-height:90vh;overflow:auto;animation:pop .18s ease}
@keyframes pop{from{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}
.modal-h{padding:20px 24px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.modal-h h3{font-size:18px}.modal-h .x{cursor:pointer;color:var(--muted);font-size:22px;line-height:1}
.modal-b{padding:22px 24px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:5px}
.field .inp,.field .sel{width:100%}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* Drawer / panel lateral */
.drawer-wrap{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:60;opacity:0;
  transition:opacity .2s;backdrop-filter:blur(2px)}
.drawer-wrap.show{opacity:1}
.drawer{position:fixed;top:0;right:0;height:100vh;width:440px;max-width:94vw;background:#fff;
  box-shadow:-12px 0 34px rgba(15,23,42,.18);transform:translateX(100%);
  transition:transform .26s cubic-bezier(.32,.72,0,1);display:flex;flex-direction:column}
.drawer-wrap.show .drawer{transform:translateX(0)}
.drawer-h{padding:20px 24px;border-bottom:1px solid var(--line);display:flex;
  justify-content:space-between;align-items:flex-start;gap:12px}
.drawer-h h3{font-size:18px;line-height:1.3}
.drawer-h .sub{font-size:12px;color:var(--muted);margin-top:4px}
.drawer-h .x{cursor:pointer;color:var(--muted);font-size:24px;line-height:1}
.drawer-b{padding:20px 24px;overflow:auto;flex:1}
.drawer-foot{padding:16px 24px;border-top:1px solid var(--line);background:#fbfbfe;display:flex;gap:10px}
.dl{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid #f1f5f9;font-size:13px}
.dl .k{color:var(--muted)} .dl .v{font-weight:600;text-align:right}
.dline{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid #f1f5f9}
.dline .n{font-weight:600;font-size:13px} .dline .s{font-size:12px;color:var(--muted)}
.dline .a{font-weight:700;white-space:nowrap}

/* Ticket */
.ticket{font-family:ui-monospace,monospace;font-size:12px}
.ticket .tl{display:flex;justify-content:space-between;padding:3px 0}
.ticket hr{border:none;border-top:1px dashed var(--line);margin:8px 0}
.ticket .big{font-size:16px;font-weight:800}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#0f1535;color:#fff;
  padding:13px 22px;border-radius:11px;box-shadow:var(--shadow-l);z-index:80;font-weight:500;font-size:14px;
  animation:pop .2s}
.toast.err{background:var(--red)} .toast.ok{background:var(--green)}
.hidden{display:none!important}
.muted{color:var(--muted)} .small{font-size:12px}
.empty{text-align:center;color:var(--muted);padding:50px}

@media(max-width:900px){
  .sidebar{width:64px;padding:16px 8px}.brand-text,.nav-btn span:not(.ic),.sidebar-foot span:last-child{display:none}
  .nav-btn{justify-content:center}.caja{grid-template-columns:1fr;height:auto}
  main{padding:18px}
}