:root{
  --bg:#f1f5f9; --card:#fff; --line:#e2e8f0; --ink:#0f172a; --muted:#64748b;
  --brand:#2563eb; --brand-d:#1d4ed8; --ok:#16a34a; --warn:#f59e0b; --danger:#dc2626;
  --radius:14px; --shadow:0 4px 20px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-tap-highlight-color:transparent}

/* ---------- LOGIN ---------- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#1e3a8a,#2563eb)}
.login-card{background:#fff;padding:32px;border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.25);width:340px;max-width:92vw}
.login-card h1{margin:0;font-size:24px;text-align:center}
.login-card .sub{margin:2px 0 20px;text-align:center;color:var(--muted)}
.login-card label{display:block;font-weight:600;font-size:13px;margin:14px 0 6px}
.login-card input{width:100%;padding:13px;border:1px solid var(--line);border-radius:10px;font-size:16px}
.login-card button{margin-top:22px;width:100%;padding:14px;background:var(--brand);color:#fff;border:0;border-radius:10px;font-size:16px;font-weight:700;cursor:pointer}
.login-card button:active{background:var(--brand-d)}

/* ---------- LAYOUT ---------- */
.topbar{position:fixed;top:0;left:0;right:0;height:58px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:12px;padding:0 16px;z-index:40}
.brand{font-weight:800;font-size:18px;color:var(--brand)}
.topuser{margin-left:auto;display:flex;align-items:center;gap:12px;color:var(--muted);font-size:14px}
.logout{text-decoration:none;font-size:20px;color:var(--danger);background:#fef2f2;width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center}
.menu-toggle{display:none;font-size:22px;background:none;border:0;cursor:pointer}

.sidenav{position:fixed;top:58px;bottom:0;left:0;width:210px;background:#fff;border-right:1px solid var(--line);padding:14px 10px;overflow:auto;z-index:30}
.sidenav a{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;margin-bottom:4px}
.sidenav a .ico{font-size:18px;width:22px;text-align:center;color:var(--brand)}
.sidenav a:hover{background:#f1f5f9}
.sidenav a.on{background:var(--brand);color:#fff}
.sidenav a.on .ico{color:#fff}
.nav-backdrop{display:none}

.content{margin-left:210px;margin-top:58px;padding:22px;max-width:1200px}
.page-title{font-size:24px;margin:0 0 18px}

/* ---------- COMPONENTS ---------- */
.flash{padding:13px 16px;border-radius:12px;margin-bottom:16px;font-weight:600}
.flash-ok{background:#ecfdf5;color:#065f46;border:1px solid #6ee7b7}
.flash-err{background:#fef2f2;color:#991b1b;border:1px solid #fca5a5}
.flash-warn{background:#fffbeb;color:#92400e;border:1px solid #fcd34d}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:22px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.kpi .lbl{color:var(--muted);font-size:13px;font-weight:600}
.kpi .val{font-size:26px;font-weight:800;margin-top:6px}
.kpi.brand{background:var(--brand);color:#fff;border:0}
.kpi.brand .lbl{color:#dbeafe}
.kpi.warn .val{color:var(--warn)}
.kpi.danger .val{color:var(--danger)}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.panel h2{font-size:16px;margin:0;padding:16px 18px;border-bottom:1px solid var(--line)}
.panel .body{padding:18px}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:14px}
th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em}
tr:last-child td{border-bottom:0}
.num{text-align:right;font-variant-numeric:tabular-nums}

.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 18px;background:var(--brand);color:#fff;border:0;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none}
.btn:active{background:var(--brand-d)}
.btn.sm{padding:8px 12px;font-size:13px}
.btn.gray{background:#e2e8f0;color:var(--ink)}
.btn.green{background:var(--ok)}
.btn.red{background:var(--danger)}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}

.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge.debt{background:#fef2f2;color:#991b1b}
.badge.credit{background:#ecfdf5;color:#065f46}
.badge.low{background:#fffbeb;color:#92400e}
.badge.ok{background:#eff6ff;color:#1e40af}

label.field{display:block;font-weight:600;font-size:13px;margin:12px 0 6px}
input[type=text],input[type=number],input[type=password],input[type=search],input[type=date],select,textarea{
  width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:16px;background:#fff}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar .grow{flex:1;min-width:180px}
.right{margin-left:auto}
.muted{color:var(--muted)}
.small{font-size:13px}

/* ---------- MODALE ---------- */
.modal-bg{display:none;position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:60;align-items:center;justify-content:center;padding:16px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:16px;width:460px;max-width:100%;max-height:90vh;overflow:auto}
.modal h3{margin:0;padding:18px 20px;border-bottom:1px solid var(--line);font-size:17px}
.modal .mbody{padding:20px}
.modal .mfoot{padding:14px 20px;border-top:1px solid var(--line);display:flex;gap:10px;justify-content:flex-end}

/* ---------- CAISSE / POS ---------- */
.pos{display:grid;grid-template-columns:1fr 380px;gap:16px;align-items:start}
.pos-products{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin-top:14px}
.prod-tile{border:1px solid var(--line);border-radius:12px;padding:12px;text-align:left;cursor:pointer;background:#fff;transition:.1s}
.prod-tile:active{transform:scale(.97)}
.prod-tile:hover{border-color:var(--brand)}
.prod-tile .ptImg{width:100%;height:70px;object-fit:cover;border-radius:8px;margin-bottom:8px;background:#f8fafc}
.prod-tile .pn{font-weight:700;font-size:14px;line-height:1.25;min-height:34px}
.prod-tile .pp{color:var(--brand);font-weight:800;margin-top:6px}
.prod-tile .ps{font-size:12px;margin-top:4px}
.prod-tile.out{opacity:.5;pointer-events:none}

.cart{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);position:sticky;top:74px;display:flex;flex-direction:column;max-height:calc(100vh - 90px)}
.cart-head{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.cart-head .htotal,.cart-head .chev{display:none}
.cart-items{overflow:auto;flex:1;min-height:80px}
.ci{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line)}
.ci .cn{flex:1;font-weight:600;font-size:14px}
.ci .cq{display:flex;align-items:center;gap:6px}
.qbtn{width:32px;height:32px;border:1px solid var(--line);background:#f8fafc;border-radius:8px;font-size:18px;font-weight:700;cursor:pointer;line-height:1}
.ci .cst{width:82px;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.qin{width:46px;height:32px;text-align:center;border:1px solid var(--line);border-radius:8px;font-size:15px;font-weight:700;padding:0 2px;-moz-appearance:textfield}
.qin::-webkit-outer-spin-button,.qin::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.delbtn{width:30px;height:30px;border:0;background:#fef2f2;color:var(--danger);border-radius:8px;font-size:14px;cursor:pointer;margin-left:6px;flex:none}
.delbtn:active{background:#fecaca}
.cart-empty{padding:30px 16px;text-align:center;color:var(--muted)}
.cart-foot{border-top:1px solid var(--line);padding:14px 16px}
.cart-total{display:flex;justify-content:space-between;font-size:22px;font-weight:800;margin-bottom:12px}
.pay-btn{width:100%;padding:16px;font-size:18px;font-weight:800;justify-content:center}

/* payment options */
.pay-opt{display:flex;gap:8px;margin:10px 0}
.pay-opt button{flex:1;padding:12px;border:2px solid var(--line);background:#fff;border-radius:10px;font-weight:700;cursor:pointer;font-size:14px}
.pay-opt button.on{border-color:var(--brand);background:#eff6ff;color:var(--brand)}

/* ---------- RESPONSIVE ---------- */
/* ---- Toast de confirmation de scan ---- */
.pos-toast{position:fixed;top:70px;left:50%;transform:translateX(-50%) translateY(-16px);
  background:var(--ok);color:#fff;padding:12px 20px;border-radius:12px;font-weight:700;font-size:15px;
  box-shadow:0 8px 24px rgba(0,0,0,.22);z-index:80;opacity:0;pointer-events:none;transition:.2s;max-width:90vw;text-align:center}
.pos-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.pos-toast.err{background:var(--danger)}

/* ---- Tablette (portrait) & mobile : menu en hamburger, panier ancre en bas ---- */
@media(max-width:900px){
  .menu-toggle{display:block}
  .sidenav{transform:translateX(-100%);transition:.25s;box-shadow:0 0 40px rgba(0,0,0,.2)}
  body.nav-open .sidenav{transform:translateX(0)}
  body.nav-open .nav-backdrop{display:block;position:fixed;inset:58px 0 0 0;background:rgba(0,0,0,.35);z-index:25}
  .content{margin-left:0;padding:16px 16px 110px}
  .row2{grid-template-columns:1fr}
  .table-wrap{overflow-x:auto}

  /* Produits en pleine largeur, vignettes plus grandes pour le doigt */
  .pos{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
  .prod-tile{padding:16px}
  .prod-tile .pn{font-size:15px}

  /* Panier ancre en bas, total TOUJOURS visible sur la poignee */
  .cart{position:fixed;inset:auto 0 0 0;top:auto;max-height:80vh;border-radius:20px 20px 0 0;z-index:35;
    transform:translateY(calc(100% - 82px));transition:transform .25s;box-shadow:0 -8px 30px rgba(0,0,0,.20)}
  .cart.open{transform:translateY(0)}
  .cart-head{cursor:pointer;height:82px;padding:0 18px}
  .cart-head b{font-size:17px}
  .cart-head .htotal{display:block;margin-left:auto;font-size:22px;font-weight:800;color:var(--brand)}
  .cart-head .chev{display:block;margin-left:6px;font-size:12px;color:var(--muted);transition:transform .25s}
  .cart.open .cart-head .chev{transform:rotate(180deg)}
  .cart-head #cartCount{margin-left:0}

  /* Boutons de quantite plus gros au toucher */
  .qbtn{width:42px;height:42px;font-size:20px}
  .ci{padding:14px}
  .pay-btn{padding:18px;font-size:19px}
}