:root{
  --bg:#f4f6f9; --card:#ffffff; --ink:#111827; --muted:#6b7280;
  --primary:#0f172a; --accent:#2563eb; --green:#16a34a; --yellow:#d97706; --red:#dc2626;
  --border:#e5e7eb; --radius:10px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);}
a{color:inherit;text-decoration:none;}
input,select,textarea,button{font-family:inherit;font-size:15px;}

/* ---------- LOGIN / PLAIN PAGES ---------- */
.content-plain{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;}
.auth-card{background:var(--card);padding:36px 32px;border-radius:var(--radius);box-shadow:0 8px 30px rgba(0,0,0,.08);width:100%;max-width:380px;}
.auth-card h1{font-size:22px;margin:0 0 4px;}
.auth-card p.sub{color:var(--muted);margin:0 0 24px;font-size:14px;}
.auth-card label{display:block;margin-bottom:14px;font-size:14px;font-weight:600;}
.auth-card input{width:100%;padding:10px 12px;margin-top:6px;border:1px solid var(--border);border-radius:8px;}
.auth-card button{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-weight:700;cursor:pointer;margin-top:8px;}
.auth-card .hint{margin-top:16px;font-size:12px;color:var(--muted);text-align:center;}

/* ---------- APP SHELL ---------- */
.app-shell{display:flex;min-height:100vh;}
.sidebar{width:230px;background:var(--primary);color:#e5e7eb;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:20;transition:transform .2s;}
.sidebar .brand{font-size:18px;font-weight:800;padding:20px 18px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);}
.sidebar nav{flex:1;overflow-y:auto;padding:10px;}
.sidebar nav a{display:block;padding:10px 12px;border-radius:8px;color:#cbd5e1;font-size:14px;margin-bottom:2px;}
.sidebar nav a:hover{background:rgba(255,255,255,.06);}
.sidebar nav a.active{background:var(--accent);color:#fff;font-weight:600;}
.sidebar-footer{padding:14px 18px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;}
.sidebar-footer .who{margin-bottom:8px;}
.sidebar-footer a.logout{color:#f87171;font-weight:600;}

.main{margin-left:230px;flex:1;display:flex;flex-direction:column;min-height:100vh;width:100%;}
.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:14px 22px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:10;}
.topbar h1{font-size:19px;margin:0;}
.menu-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;}
.content{padding:22px;flex:1;}

/* ---------- FLASH ---------- */
.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px;}
.flash-success{background:#dcfce7;color:#166534;}
.flash-error{background:#fee2e2;color:#991b1b;}
.flash-info{background:#dbeafe;color:#1e40af;}

/* ---------- GRID / CARDS ---------- */
.grid{display:grid;gap:16px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media(max-width:900px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr 1fr;}}
@media(max-width:600px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.06);border:1px solid var(--border);}
.card h3{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);}
.card .big{font-size:26px;font-weight:800;}
.card.accent-green .big{color:var(--green);}
.card.accent-yellow .big{color:var(--yellow);}
.card.accent-red .big{color:var(--red);}

.section-title{font-size:16px;font-weight:700;margin:28px 0 12px;}

/* ---------- HEALTH BADGE ---------- */
.health{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:20px;font-weight:700;font-size:14px;}
.health-green{background:#dcfce7;color:#166534;}
.health-yellow{background:#fef3c7;color:#92400e;}
.health-red{background:#fee2e2;color:#991b1b;}

/* ---------- BUTTONS ---------- */
.btn{display:inline-block;padding:9px 16px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;font-size:14px;}
.btn.secondary{background:#e5e7eb;color:var(--ink);}
.btn.danger{background:var(--red);color:#fff;}
.btn.success{background:var(--green);color:#fff;}
.btn.small{padding:6px 10px;font-size:12px;}
.btn.big{padding:18px;font-size:16px;width:100%;}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- FORMS ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:700px){.form-grid{grid-template-columns:1fr;}}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#374151;}
.field input,.field select,.field textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;background:#fff;}
.field small.hint{color:var(--muted);}

/* ---------- TABLES ---------- */
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px;}
th{background:#f9fafb;font-size:12px;text-transform:uppercase;color:var(--muted);letter-spacing:.03em;}
tr:last-child td{border-bottom:none;}
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);}
.table-wrap table{border:none;border-radius:0;}

.badge{display:inline-block;padding:3px 9px;border-radius:12px;font-size:11px;font-weight:700;text-transform:uppercase;}
.badge-waiting{background:#fef3c7;color:#92400e;}
.badge-in_progress{background:#dbeafe;color:#1e40af;}
.badge-completed{background:#e0e7ff;color:#3730a3;}
.badge-collected{background:#dcfce7;color:#166534;}
.badge-active{background:#dcfce7;color:#166534;}
.badge-inactive{background:#f3f4f6;color:#6b7280;}

/* ---------- POS ---------- */
.pos-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:18px;align-items:start;}
@media(max-width:1000px){.pos-layout{grid-template-columns:1fr;}}
.pos-search{margin-bottom:14px;}
.pos-search input{width:100%;padding:14px;font-size:16px;border:1px solid var(--border);border-radius:10px;}
.pos-products{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;max-height:60vh;overflow-y:auto;}
.pos-product{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:12px;cursor:pointer;text-align:left;}
.pos-product:hover{border-color:var(--accent);}
.pos-product .name{font-weight:700;font-size:14px;margin-bottom:4px;}
.pos-product .price{color:var(--accent);font-weight:700;}
.pos-product .stock{font-size:12px;color:var(--muted);}
.cart-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--border);}
.cart-item .qty-controls{display:flex;align-items:center;gap:6px;}
.cart-item .qty-controls button{width:26px;height:26px;border-radius:6px;border:1px solid var(--border);background:#fff;cursor:pointer;}
.cart-total{display:flex;justify-content:space-between;font-size:20px;font-weight:800;margin:14px 0;}

/* ---------- QUICK ACTIONS (mobile worker) ---------- */
.quick-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px;}
@media(max-width:600px){.quick-actions{grid-template-columns:1fr 1fr;}}
.quick-actions a{background:var(--primary);color:#fff;text-align:center;padding:22px 10px;border-radius:12px;font-weight:700;font-size:14px;}
.quick-actions a:nth-child(2){background:var(--accent);}
.quick-actions a:nth-child(3){background:var(--green);}

@media(max-width:860px){
  .sidebar{transform:translateX(-100%);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .menu-toggle{display:block;}
}