:root{
    --ink:#1B2A26;
    --ink-soft:#2C3E38;
    --cream:#F7F5F0;
    --card:#FFFFFF;
    --line:#E4E0D6;
    --green:#2F7A5C;
    --green-dark:#245F48;
    --green-bg:#EDF5F0;
    --red:#C1442D;
    --red-bg:#FBEAE6;
    --amber:#E8B04B;
    --amber-bg:#FCF3E1;
    --blue:#2A5B72;
    --blue-bg:#EAF1F5;
    --text:#1B2A26;
    --text-mute:#6B7570;
    --radius:10px;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;height:100%;}
  body{
    font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
    background:var(--cream);
    color:var(--text);
    font-variant-numeric: tabular-nums;
  }
  .shell{
    display:grid;
    grid-template-columns:220px 1fr;
    height:100vh;
  }

  /* Sidebar */
  .sidebar{
    background:var(--ink);
    color:#fff;
    display:flex;
    flex-direction:column;
    padding:18px 0;
  }
  .brand{
    padding:0 20px 20px;
    font-size:15px;
    font-weight:800;
    letter-spacing:-0.2px;
    border-bottom:1px solid #33453D;
    margin-bottom:12px;
  }
  .brand .sub{
    display:block;
    font-size:11.5px;
    font-weight:500;
    color:#8FA39B;
    margin-top:3px;
  }
  .nav-item{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 20px;
    font-size:14px;
    font-weight:600;
    color:#B9C7C0;
    cursor:pointer;
    border-left:3px solid transparent;
  }
  .nav-item .ic{font-size:17px; width:20px; text-align:center;}
  .nav-item:hover{background:#233530; color:#fff;}
  .nav-item.active{
    background:#233530;
    color:#fff;
    border-left-color:var(--green);
  }
  .sidebar-foot{
    margin-top:auto;
    padding:14px 20px;
    font-size:12px;
    color:#6B8378;
    border-top:1px solid #33453D;
  }

  /* Collapsible sidebar */
  .shell{ transition:grid-template-columns .16s ease; }
  .shell.collapsed{ grid-template-columns:0 1fr; }
  .shell.collapsed .sidebar{ width:0; padding:0; overflow:hidden; opacity:0; }
  .menu-btn{
    width:34px; height:34px; border-radius:8px; border:1px solid var(--line);
    background:#fff; cursor:pointer; font-size:15px; display:flex; align-items:center; justify-content:center;
    flex-shrink:0;
  }
  .menu-btn:hover{ background:#F3F1EB; }

  /* Main area */
  .mainarea{
    display:flex;
    flex-direction:column;
    overflow:hidden;
  }
  .screen{
    display:none;
    flex-direction:column;
    height:100%;
    overflow:hidden;
  }
  .screen.active{display:flex;}

  .screen-topbar{
    padding:18px 26px;
    border-bottom:1px solid var(--line);
    display:flex;
    align-items:center;
    gap:16px;
    background:#fff;
  }
  .screen-topbar h1{
    font-size:18px;
    margin:0;
    font-weight:800;
    letter-spacing:-0.2px;
  }
  .screen-topbar .meta{
    font-size:13px;
    color:var(--text-mute);
    font-weight:600;
  }
  .screen-topbar .spacer{flex:1;}
  .btn{
    padding:10px 16px;
    border-radius:8px;
    border:1px solid var(--line);
    background:#fff;
    font-size:13.5px;
    font-weight:700;
    cursor:pointer;
    color:var(--text);
  }
  .btn:hover{background:#F3F1EB;}
  .btn-primary{
    background:var(--green);
    color:#fff;
    border-color:var(--green);
  }
  .btn-primary:hover{background:var(--green-dark);}
  .btn-danger{color:var(--red); border-color:#EBD3CC;}

  .screen-body{
    flex:1;
    overflow-y:auto;
    padding:24px 26px;
  }

  /* ===== VENTE screen (POS) ===== */
  .pos-main{
    display:grid;
    grid-template-columns:1fr 360px;
    height:100%;
    overflow:hidden;
  }
  .cats{
    display:flex; gap:8px; padding:14px 22px; border-bottom:1px solid var(--line); overflow-x:auto; background:#fff;
  }
  .cat-btn{
    padding:9px 16px; border-radius:8px; border:1px solid var(--line); background:#fff;
    font-size:13.5px; font-weight:600; color:var(--text-mute); cursor:pointer; white-space:nowrap;
  }
  .cat-btn.active{ background:var(--ink); color:#fff; border-color:var(--ink); }
  .pos-left{ display:flex; flex-direction:column; overflow:hidden; }
  .products{
    padding:18px 22px; overflow-y:auto;
    display:grid; grid-template-columns:repeat(auto-fill,minmax(140px,1fr)); gap:12px; align-content:start;
  }
  .prod{
    background:var(--card); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
    cursor:pointer; display:flex; flex-direction:column; position:relative;
  }
  .prod:hover{box-shadow:0 2px 10px rgba(27,42,38,0.08);}
  .prod .thumb{ width:100%; aspect-ratio:1.3/1; object-fit:cover; background:#EFEDE5; }
  .prod .thumb-fallback{ width:100%; aspect-ratio:1.3/1; display:flex; align-items:center; justify-content:center; font-size:20px; font-weight:800; color:#fff; }
  .prod .body{ padding:9px 10px 11px; display:flex; flex-direction:column; gap:5px; }
  .prod .tag{ width:20px; height:4px; border-radius:2px; }
  .prod .name{ font-size:13.5px; font-weight:600; line-height:1.25; }
  .prod .price{ font-size:14px; font-weight:700; color:var(--green-dark); }
  .prod .stock-low{ position:absolute; top:8px; right:8px; width:9px; height:9px; border-radius:50%; background:var(--amber); box-shadow:0 0 0 2px #fff; }

  .cart{ background:#fff; border-left:1px solid var(--line); display:grid; grid-template-rows:auto 1fr auto; overflow:hidden; }
  .cart-head{ padding:16px 18px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:baseline; }
  .cart-head h2{ font-size:15px; margin:0; }
  .cart-head .count{ font-size:13px; color:var(--text-mute); font-weight:600; }
  .cart-items{ overflow-y:auto; padding:6px 12px; }
  .cart-empty{ color:var(--text-mute); font-size:13px; text-align:center; padding:36px 20px; }
  .cart-line{ display:grid; grid-template-columns:1fr auto; gap:4px 10px; padding:11px 8px; border-bottom:1px solid #F0EEE7; }
  .cart-line .name{ font-size:13.5px; font-weight:600; }
  .cart-line .line-total{ font-size:14px; font-weight:700; }
  .qty-row{ grid-column:1/-1; display:flex; align-items:center; gap:10px; }
  .qty-ctrl{ display:flex; border:1px solid var(--line); border-radius:7px; overflow:hidden; }
  .qty-ctrl button{ width:28px; height:28px; border:none; background:#F3F1EB; font-size:15px; font-weight:700; cursor:pointer; }
  .qty-ctrl .qty-val{ width:28px; text-align:center; font-size:13px; font-weight:700; }
  .unit-price{ font-size:11.5px; color:var(--text-mute); }
  .remove-btn{ margin-left:auto; background:none; border:none; color:var(--red); font-size:11.5px; font-weight:600; cursor:pointer; }
  .cart-foot{ border-top:1px solid var(--line); padding:14px 18px 16px; }
  .total-row{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:12px; }
  .total-row .label{ font-size:13.5px; color:var(--text-mute); font-weight:600; }
  .total-row .amount{ font-size:27px; font-weight:800; letter-spacing:-0.5px; }
  .pay-grid{ display:grid; grid-template-columns:1fr 1fr 1fr; gap:7px; }
  .pay-btn{ padding:13px 6px; border-radius:8px; border:none; font-size:12.5px; font-weight:700; cursor:pointer; display:flex; flex-direction:column; gap:5px; align-items:center; }
  .pay-cash{background:var(--green-bg); color:var(--green-dark);}
  .pay-card{background:var(--blue-bg); color:var(--blue);}
  .pay-twint{background:#FBEFE3; color:#A15A1F;}
  .validate-btn{ margin-top:9px; width:100%; padding:14px; border:none; border-radius:8px; background:var(--green); color:#fff; font-size:14px; font-weight:700; cursor:pointer; }
  .validate-btn:disabled{ background:#D8D4C8; color:#9C978A; }

  /* ===== Generic table styles (Produits, Stock, Rapports) ===== */
  .toolbar{ display:flex; gap:10px; margin-bottom:18px; align-items:center; }
  .toolbar input[type=text]{
    padding:10px 14px; border-radius:8px; border:1px solid var(--line); font-size:13.5px; width:280px; background:#fff;
  }
  table.data{ width:100%; border-collapse:collapse; background:#fff; border-radius:var(--radius); overflow:hidden; border:1px solid var(--line); }
  table.data th{
    text-align:left; font-size:11.5px; text-transform:uppercase; letter-spacing:0.4px; color:var(--text-mute);
    padding:12px 16px; border-bottom:1px solid var(--line); background:#FAF8F3; font-weight:700;
  }
  table.data td{ padding:12px 16px; font-size:13.5px; border-bottom:1px solid #F0EEE7; vertical-align:middle; }
  table.data tr:last-child td{ border-bottom:none; }
  table.data tr:hover td{ background:#FAF9F5; }
  .row-thumb{ width:38px; height:38px; border-radius:6px; object-fit:cover; background:#EFEDE5; display:inline-block; vertical-align:middle; }
  .row-thumb-fallback{ width:38px; height:38px; border-radius:6px; display:inline-flex; align-items:center; justify-content:center; color:#fff; font-weight:800; font-size:13px; }
  .pill{ display:inline-block; padding:4px 10px; border-radius:999px; font-size:11.5px; font-weight:700; }
  .pill-ok{ background:var(--green-bg); color:var(--green-dark); }
  .pill-low{ background:var(--amber-bg); color:#8A6116; }
  .pill-out{ background:var(--red-bg); color:var(--red); }
  .cell-actions{ display:flex; gap:8px; }
  .cell-actions button{ background:none; border:none; font-size:12.5px; font-weight:700; cursor:pointer; color:var(--blue); }
  .cell-actions button.del{ color:var(--red); }

  /* Product edit panel (slide-over) */
  .overlay{
    position:fixed; inset:0; background:rgba(27,42,38,0.35); display:none; align-items:stretch; justify-content:flex-end; z-index:50;
  }
  .overlay.open{ display:flex; }
  .panel{
    width:420px; background:#fff; height:100%; overflow-y:auto; padding:24px;
    box-shadow:-8px 0 24px rgba(0,0,0,0.12);
  }
  .panel h2{ font-size:17px; margin:0 0 20px; }
  .field{ margin-bottom:16px; }
  .field label{ display:block; font-size:12px; font-weight:700; color:var(--text-mute); margin-bottom:6px; text-transform:uppercase; letter-spacing:0.3px; }
  .field input[type=text], .field input[type=number], .field select{
    width:100%; padding:10px 12px; border-radius:7px; border:1px solid var(--line); font-size:13.5px; background:#fff;
  }
  .img-upload{
    border:2px dashed var(--line); border-radius:10px; padding:20px; text-align:center; color:var(--text-mute);
    font-size:13px; cursor:pointer; background:#FAF9F5;
  }
  .img-upload:hover{ border-color:var(--green); color:var(--green-dark); }
  .img-upload img{ max-width:100%; max-height:120px; border-radius:8px; margin-bottom:8px; }
  .panel-actions{ display:flex; gap:10px; margin-top:22px; }
  .panel-actions .btn{ flex:1; text-align:center; }

  /* Session screen */
  .cards-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-bottom:22px; }
  .stat-card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:18px; }
  .stat-card .label{ font-size:12px; color:var(--text-mute); font-weight:700; text-transform:uppercase; letter-spacing:0.3px; margin-bottom:8px; }
  .stat-card .value{ font-size:24px; font-weight:800; }
  .denom-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-bottom:20px; }
  .denom-box{ background:#fff; border:1px solid var(--line); border-radius:8px; padding:10px 12px; }
  .denom-box .lbl{ font-size:12px; color:var(--text-mute); font-weight:700; margin-bottom:6px; }
  .denom-box input{ width:100%; border:none; font-size:15px; font-weight:700; padding:0; background:transparent; }

  /* Settings screen */
  .settings-tabs{ display:flex; gap:6px; margin-bottom:20px; border-bottom:1px solid var(--line); }
  .stab{ padding:11px 16px; font-size:13.5px; font-weight:700; color:var(--text-mute); cursor:pointer; border-bottom:2px solid transparent; }
  .stab.active{ color:var(--ink); border-bottom-color:var(--green); }
  .settings-pane{ display:none; }
  .settings-pane.active{ display:block; }
  .form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; max-width:640px; }
  .form-grid .full{ grid-column:1/-1; }
  .toggle-row{ display:flex; align-items:center; justify-content:space-between; padding:14px 0; border-bottom:1px solid #F0EEE7; max-width:640px; }
  .toggle-row .t-name{ font-size:13.5px; font-weight:700; }
  .toggle-row .t-desc{ font-size:12px; color:var(--text-mute); margin-top:2px; }
  .switch{ width:42px; height:24px; border-radius:12px; background:var(--line); position:relative; cursor:pointer; flex-shrink:0; }
  .switch.on{ background:var(--green); }
  .switch::after{ content:''; position:absolute; top:3px; left:3px; width:18px; height:18px; border-radius:50%; background:#fff; transition:left .12s ease; }
  .switch.on::after{ left:21px; }

  /* Print preview modal */
  .print-overlay{
    position:fixed; inset:0; background:rgba(27,42,38,0.45); display:none;
    align-items:center; justify-content:center; z-index:60; padding:30px;
  }
  .print-overlay.open{ display:flex; }
  .print-modal{
    background:#fff; border-radius:12px; max-height:90vh; overflow:hidden;
    display:flex; box-shadow:0 20px 50px rgba(0,0,0,0.25);
  }
  .print-modal-preview{
    background:#EDEAE0; padding:30px; overflow-y:auto; display:flex; justify-content:center;
  }
  .print-modal-side{
    width:220px; padding:22px; border-left:1px solid var(--line); display:flex; flex-direction:column; gap:10px;
  }
  .print-modal-side h3{ font-size:14px; margin:0 0 4px; }
  .print-modal-side .btn{ width:100%; }
  .close-print{ background:none; border:none; font-size:13px; color:var(--text-mute); cursor:pointer; text-align:left; padding:0; }

  /* Ticket thermique 80mm */
  .ticket-paper{
    width:280px; background:#fff; padding:18px 16px; font-family:'Courier New',monospace;
    box-shadow:0 4px 14px rgba(0,0,0,0.12); font-size:12px; color:#1B2A26;
  }
  .ticket-paper .t-center{ text-align:center; }
  .ticket-paper .t-logo{ font-weight:800; font-size:14px; margin-bottom:2px; }
  .ticket-paper .t-sub{ font-size:10.5px; color:#555; margin-bottom:10px; }
  .ticket-paper hr{ border:none; border-top:1px dashed #999; margin:8px 0; }
  .ticket-paper .t-line{ display:flex; justify-content:space-between; margin-bottom:3px; }
  .ticket-paper .t-total{ display:flex; justify-content:space-between; font-weight:800; font-size:13px; margin-top:6px; }
  .ticket-paper .t-foot{ text-align:center; font-size:10px; color:#555; margin-top:12px; }

  /* Rapport A4 */
  .a4-paper{
    width:480px; min-height:600px; background:#fff; padding:36px 32px;
    box-shadow:0 4px 14px rgba(0,0,0,0.12); font-size:12.5px;
  }
  .a4-paper h2{ font-size:17px; margin:0 0 4px; }
  .a4-paper .a4-sub{ font-size:12px; color:var(--text-mute); margin-bottom:20px; }
  .a4-paper table{ width:100%; border-collapse:collapse; margin-bottom:18px; }
  .a4-paper th{ text-align:left; font-size:11px; text-transform:uppercase; color:var(--text-mute); border-bottom:1px solid var(--line); padding:6px 4px; }
  .a4-paper td{ padding:6px 4px; border-bottom:1px solid #F0EEE7; font-size:12.5px; }

  /* Print template editor */
  .tmpl-layout{ display:grid; grid-template-columns:260px 1fr; gap:24px; max-width:820px; }
  .tmpl-list{ display:flex; flex-direction:column; gap:8px; }
  .tmpl-item{ padding:12px 14px; border:1px solid var(--line); border-radius:8px; background:#fff; font-size:13.5px; font-weight:600; cursor:pointer; }
  .tmpl-item.active{ border-color:var(--green); background:var(--green-bg); color:var(--green-dark); }
  .tmpl-editor{ background:#fff; border:1px solid var(--line); border-radius:10px; padding:20px; }
  .tmpl-preview-wrap{ display:flex; justify-content:center; padding:20px; background:#EDEAE0; border-radius:10px; margin-top:16px; }

/* ===== Écran de connexion ===== */
.login-body{
  height:100vh; display:flex; align-items:center; justify-content:center;
  background:var(--ink);
}
.login-box{
  background:#fff; border-radius:16px; padding:40px 44px; width:380px;
  box-shadow:0 20px 60px rgba(0,0,0,0.3);
}
.login-brand{
  font-size:19px; font-weight:800; text-align:center; margin-bottom:26px; color:var(--ink);
}
.login-brand .sub{ display:block; font-size:12px; font-weight:500; color:var(--text-mute); margin-top:3px; }
.login-hint{ text-align:center; font-size:13.5px; color:var(--text-mute); font-weight:600; margin-bottom:18px; }
.user-grid{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.user-tile{
  display:flex; flex-direction:column; align-items:center; gap:8px; padding:18px 10px;
  border:1px solid var(--line); border-radius:10px; background:#fff; cursor:pointer; font-size:13.5px; font-weight:700;
}
.user-tile:hover{ border-color:var(--green); background:var(--green-bg); }
.user-avatar{
  width:44px; height:44px; border-radius:50%; background:var(--ink); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:17px; font-weight:800;
}
.pin-dots{ display:flex; justify-content:center; gap:12px; margin-bottom:8px; }
.pin-dots span{ width:14px; height:14px; border-radius:50%; border:2px solid var(--line); display:block; }
.pin-dots span.filled{ background:var(--ink); border-color:var(--ink); }
.pin-error{ text-align:center; color:var(--red); font-size:12.5px; font-weight:600; min-height:18px; margin-bottom:8px; }
.pin-pad{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin-bottom:18px; }
.pin-pad button{
  padding:16px 0; font-size:18px; font-weight:700; border-radius:10px; border:1px solid var(--line);
  background:#FAF9F5; cursor:pointer; color:var(--ink);
}
.pin-pad button:hover{ background:#F0EEE7; }
.login-back{ width:100%; text-align:center; }

/* ===== Barre d'ouverture/fermeture de caisse ===== */
.session-gate{
  height:100%; display:flex; align-items:center; justify-content:center;
}
.session-gate-box{
  background:#fff; border:1px solid var(--line); border-radius:14px; padding:36px 40px; width:360px; text-align:center;
}
.session-gate-box h2{ font-size:17px; margin:0 0 6px; }
.session-gate-box p{ font-size:13px; color:var(--text-mute); margin:0 0 22px; }
.session-gate-box input{
  width:100%; padding:14px; font-size:20px; font-weight:700; text-align:center; border-radius:8px;
  border:1px solid var(--line); margin-bottom:16px;
}

/* Champ mot de passe admin sur l'écran de connexion */
.password-field{
  position:relative; margin-bottom:8px;
}
.password-field input{
  width:100%; padding:14px 44px 14px 14px; font-size:15px; border-radius:8px;
  border:1px solid var(--line); box-sizing:border-box;
}
.password-toggle{
  position:absolute; right:8px; top:50%; transform:translateY(-50%);
  background:none; border:none; cursor:pointer; font-size:16px; padding:6px;
}

/* Boutons de modèle de rôle / type d'accès (panneau utilisateur) */
.role-template-row{
  display:flex; gap:6px;
}
.role-tmpl-btn{
  flex:1; padding:9px 6px; font-size:12.5px; font-weight:700; border-radius:7px;
  border:1px solid var(--line); background:#fff; cursor:pointer; color:var(--text-mute);
}
.role-tmpl-btn:hover{ background:#F3F1EB; }
.role-tmpl-btn.active{ background:var(--ink); color:#fff; border-color:var(--ink); }