* { box-sizing: border-box; }
:root {
  --bg:#f4f6f8; --card:#fff; --card-soft:#f9fafb; --text:#1f2937; --muted:#6b7280;
  --border:#e2e8f0; --border-strong:#cbd5e1; --primary:#2563eb; --primary-hover:#1d4ed8;
  --primary-soft:#eff6ff; --ok:#16a34a; --ok-soft:#f0fdf4; --err:#dc2626; --err-soft:#fef2f2;
  --warn:#d97706; --warn-soft:#fffbeb; --radius:4px;
  --shadow:0 4px 16px rgba(15,23,42,.06);
}
html,body{margin:0;padding:0;min-height:100%;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text);}
.wrap{max-width:900px;margin:0 auto;padding:20px;}
.topbar{background:#fff;border-bottom:1px solid var(--border);}
.topbar-inner{max-width:900px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.brand{font-weight:800;letter-spacing:-.02em;display:flex;align-items:center;gap:10px;}
.brand-mark{width:34px;height:34px;border-radius:var(--radius);background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:16px;}
h1{font-size:26px;letter-spacing:-.03em;margin:0 0 14px;}
h2{font-size:19px;letter-spacing:-.02em;margin:0 0 12px;}
label{display:block;font-size:14px;font-weight:700;margin-bottom:6px;}
input[type=text],input[type=password],input[type=search]{width:100%;border:1px solid var(--border-strong);border-radius:var(--radius);padding:14px 15px;font-size:16px;font-family:inherit;background:#fff;color:var(--text);}
input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.15);}
.field{margin-bottom:16px;position:relative;}
.btn,button{border:0;border-radius:var(--radius);padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--primary);color:#fff;transition:.16s ease;}
.btn:hover,button:hover{background:var(--primary-hover);}
.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--border-strong);}
.btn-secondary:hover{background:var(--card-soft);border-color:var(--primary);color:var(--primary);}
.btn-danger{background:var(--err);}
.btn-danger:hover{background:#b91c1c;}
.btn-full{width:100%;}
.muted{color:var(--muted);font-size:14px;}
.row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid var(--border);}
.row:first-child{border-top:0;}
.badge{font-size:12px;font-weight:700;padding:4px 10px;border-radius:var(--radius);display:inline-flex;align-items:center;gap:6px;}
.badge-ok{background:var(--ok-soft);color:var(--ok);}
.badge-err{background:var(--err-soft);color:var(--err);}
.badge-wait{background:var(--warn-soft);color:var(--warn);}
.badge-open{background:var(--primary-soft);color:var(--primary);}
.alert{padding:12px 14px;border-radius:var(--radius);margin-bottom:14px;font-size:14px;}
.alert-error{background:var(--err-soft);color:#991b1b;border:1px solid #fecaca;}
.alert-info{background:var(--primary-soft);color:#1e3a8a;border:1px solid #bfdbfe;}
table{width:100%;border-collapse:collapse;}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-size:14px;}
th{color:var(--muted);font-weight:700;}
.autocomplete{position:absolute;left:0;right:0;top:100%;background:#fff;border:1px solid var(--border-strong);border-radius:var(--radius);box-shadow:var(--shadow);z-index:30;overflow:hidden;}
.autocomplete div{padding:12px 15px;cursor:pointer;font-size:15px;}
.autocomplete div:hover,.autocomplete div.active{background:var(--primary-soft);color:var(--primary);}
/* écran scan */
.net-dot{width:10px;height:10px;border-radius:50%;display:inline-block;}
.net-online{background:var(--ok);} .net-offline{background:var(--err);}
#scan-input{font-size:20px;padding:18px;text-align:center;letter-spacing:.04em;}
.scan-list{margin-top:6px;}
.scan-item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 4px;border-top:1px solid var(--border);font-size:15px;}
.scan-ean{font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.flash-error{animation:flashred .5s ease;}
@keyframes flashred{0%{background:var(--err);}100%{background:var(--bg);}}
/* ===== Pop-up (modal) collée en bas de l'écran ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:100;display:none;}
.modal-overlay.show{display:block;}
.modal-sheet{position:fixed;left:0;right:0;bottom:0;background:#fff;
  border-radius:4px 4px 0 0;box-shadow:0 -8px 30px rgba(15,23,42,.18);
  padding:34px 24px calc(30px + env(safe-area-inset-bottom));
  transform:translateY(100%);transition:transform .22s ease;max-width:640px;margin:0 auto;
  min-height:48vh;display:flex;flex-direction:column;}
.modal-overlay.show .modal-sheet{transform:translateY(0);}
.modal-title{font-size:24px;font-weight:800;letter-spacing:-.02em;margin:0 0 14px;color:var(--text);}
.modal-desc{font-size:17px;line-height:1.6;color:var(--muted);margin:0 0 24px;white-space:pre-line;flex:1;}
.modal-actions{display:flex;flex-direction:column;gap:12px;margin-top:auto;}
.modal-btn{width:100%;min-height:60px;border:0;border-radius:4px;font-size:17px;font-weight:800;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.modal-btn-valider{background:var(--ok);color:#fff;}
.modal-btn-valider:hover{background:#15803d;}
.modal-btn-annuler{background:#fff;color:var(--text);border:1px solid var(--border-strong);}
.modal-btn-annuler:hover{background:var(--card-soft);}
.modal-icon{font-size:22px;}
/* lien accès admin depuis la page de connexion */
.admin-link{display:inline-flex;align-items:center;gap:7px;margin-top:18px;font-size:13px;font-weight:700;color:var(--muted);text-decoration:none;padding:9px 15px;border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--card);transition:.16s ease;}
.admin-link:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft);}
/* groupe d'actions : en ligne sur desktop */
.actions-stack{display:flex;flex-direction:row;flex-wrap:wrap;gap:8px;align-items:center;}
.table-scroll{width:100%;}
/* liste déroulante */
select{width:100%;border:1px solid var(--border-strong);border-radius:var(--radius);padding:13px 15px;font-size:16px;font-family:inherit;background:#fff;color:var(--text);appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center;}
select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.15);}
/* encart boutique (dashboard admin) */
.boutique-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px;}
.boutique-stats{display:flex;gap:10px;margin-bottom:12px;}
.stat{flex:1;background:var(--card-soft);border:1px solid var(--border);border-radius:var(--radius);padding:12px;text-align:center;}
.stat-val{display:block;font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--text);line-height:1.1;}
.stat-lbl{display:block;font-size:12px;color:var(--muted);margin-top:2px;}

/* ===== Optimisation mobile ===== */
@media (max-width: 640px){
  .wrap{padding:14px;}
  h1{font-size:22px;}
  h2{font-size:17px;}

  /* Rangées (dashboard, boutique) : empilées verticalement, boutons pleine largeur */
  .row{flex-direction:column;align-items:stretch;gap:10px;padding:16px 0;}
  /* Le bloc d'actions (2e enfant direct de .row) prend toute la largeur */
  .row > div:last-child{display:flex;flex-direction:column;gap:8px;width:100%;}
  .row .btn, .row button{width:100%;min-height:46px;font-size:15px;}

  /* Boutons dans les en-têtes de carte (détail session) : pleine largeur empilée */
  .card .row + * {width:100%;}
  form{width:100%;}
  form .btn, form button{width:100%;}

  /* Tableaux (historique, session) : défilement horizontal propre, pas de débordement de page */
  .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -6px;}
  table{min-width:0;}
  th,td{padding:9px 8px;font-size:13px;}
  /* Boutons dans les cellules d'action : empilés pleine largeur */
  td .btn{display:block;width:100%;margin-bottom:6px;min-height:42px;}
  td .btn:last-child{margin-bottom:0;}

  /* Barre du haut : marque + bouton lisibles */
  .topbar-inner{padding:12px 14px;gap:10px;}
  .brand{font-size:15px;}
  .topbar-inner > .btn, .topbar-inner > a.btn{padding:10px 12px;font-size:13px;white-space:nowrap;}

  /* Zone d'actions générique (flex avec plusieurs boutons) -> empilée pleine largeur */
  .actions-stack{display:flex;flex-direction:column;gap:8px;width:100%;}
  .actions-stack .btn, .actions-stack button{width:100%;min-height:46px;}
}