:root{
  --bg:#f8fafc; --bg-soft:#eef2ff; --card:#ffffff; --card-glass:rgba(255,255,255,.75);
  --primary:#6366f1; --primary-dark:#4f46e5; --primary-light:#e0e7ff; --primary-glow:rgba(99,102,241,.25);
  --accent:#ec4899; --accent-glow:rgba(236,72,153,.2);
  --success:#10b981; --danger:#f43f5e; --warn:#f59e0b; --info:#06b6d4;
  --text:#0f172a; --muted:#64748b; --border:#e2e8f0;
  --radius:22px; --radius-sm:14px;
  --shadow:0 10px 40px rgba(15,23,42,.08); --shadow-lg:0 20px 60px rgba(99,102,241,.15);
  --font:'Cairo',Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;direction:rtl;overflow-x:hidden;transition:background .3s,color .3s}
body::before{content:'';position:fixed;inset:0;background:
  radial-gradient(circle at 10% 10%, rgba(99,102,241,.12), transparent 35%),
  radial-gradient(circle at 90% 90%, rgba(236,72,153,.10), transparent 35%),
  radial-gradient(circle at 50% 50%, rgba(16,185,129,.06), transparent 45%);
  pointer-events:none;z-index:0}
a{color:var(--primary);text-decoration:none}
button{cursor:pointer;font-family:var(--font)}
input,select,textarea{font-family:var(--font);font-size:15px;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;background:#fff;color:var(--text);transition:.2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light);background:#fff}
.btn{padding:12px 18px;border:none;border-radius:var(--radius-sm);font-weight:700;transition:.2s;display:inline-flex;align-items:center;gap:8px;letter-spacing:.2px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 6px 20px var(--primary-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px var(--primary-glow)}
.btn-success{background:linear-gradient(135deg,var(--success),#34d399);color:#fff}
.btn-success:hover{transform:translateY(-2px)}
.btn-danger{background:linear-gradient(135deg,var(--danger),#fb7185);color:#fff}
.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{background:var(--bg-soft);transform:translateY(-1px);border-color:var(--primary)}
.btn-sm{padding:7px 12px;font-size:13px}
.btn-block{width:100%;justify-content:center}
.btn:active{transform:scale(.97)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;position:relative;z-index:1;transition:.25s}
.card:hover{box-shadow:var(--shadow-lg);border-color:rgba(99,102,241,.25)}
.card-h{font-weight:800;font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:8px;color:var(--text)}
.grid-2{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar input,.toolbar select{width:auto;min-width:140px;flex:1}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row>*{flex:1}
.form-group{margin-bottom:14px}
.form-group label{display:block;margin-bottom:6px;font-weight:700;font-size:13px;color:var(--muted)}
.table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow)}
.table th,.table td{padding:12px;border-bottom:1px solid var(--border);text-align:right;font-size:14px}
.table th{background:var(--bg-soft);font-weight:800;color:var(--muted);font-size:12px}
.table tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:var(--bg-soft)}
.badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:800}
.badge-ok{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}
.badge-low{background:#fef3c7;color:#92400e;border:1px solid #fde68a}
.badge-out{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}
.empty{text-align:center;color:var(--muted);padding:40px;font-size:14px}
.loading{text-align:center;color:var(--muted);padding:50px;font-size:15px}
.muted{color:var(--muted);font-size:13px}
.close{position:absolute;top:14px;left:14px;background:#f1f5f9;border:none;font-size:22px;color:var(--muted);cursor:pointer;border-radius:10px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;transition:.2s}
.close:hover{background:#fee2e2;color:var(--danger)}

/* Auth */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,#eef2ff,#fce7f3,#ecfeff);position:relative;overflow:hidden}
.auth-wrap::before{content:'';position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,.25),transparent 70%);top:-100px;right:-100px;animation:float 8s ease-in-out infinite}
.auth-wrap::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(236,72,153,.2),transparent 70%);bottom:-80px;left:-80px;animation:float 10s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-20px)}}
.auth-card{background:rgba(255,255,255,.85);border:1px solid #fff;border-radius:28px;box-shadow:var(--shadow-lg);padding:48px 36px;width:100%;max-width:420px;text-align:center;backdrop-filter:blur(20px);position:relative;z-index:1;animation:cardIn .6s cubic-bezier(.2,.8,.2,1)}
@keyframes cardIn{from{opacity:0;transform:translateY(30px) scale(.96)}to{opacity:1;transform:none}}
.auth-logo{font-size:64px;margin-bottom:12px;animation:bounce 2s ease-in-out infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.auth-card h2{margin-bottom:4px;font-size:26px;font-weight:900;color:var(--text)}
.auth-card .muted{margin-bottom:24px}

/* App shell */
.app-shell{display:flex;min-height:100vh;position:relative;z-index:1}
.sidebar{width:260px;background:linear-gradient(180deg,#ffffff,#f8fafc);border-left:1px solid var(--border);display:flex;flex-direction:column;transition:.3s;position:sticky;top:0;height:100vh;z-index:50;box-shadow:4px 0 24px rgba(15,23,42,.04)}
.brand{padding:22px 18px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border)}
.brand-icon{font-size:34px;filter:drop-shadow(0 0 8px var(--primary-glow))}
.brand-name{font-weight:900;font-size:16px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{font-size:12px;color:var(--muted);margin-top:2px}
.side-nav{flex:1;padding:12px;display:flex;flex-direction:column;gap:6px}
.side-nav button{background:transparent;border:none;color:var(--muted);padding:12px 14px;border-radius:14px;text-align:right;font-weight:700;display:flex;align-items:center;gap:12px;transition:.2s;font-size:14px}
.side-nav button:hover{background:var(--primary-light);color:var(--primary);transform:translateX(-4px)}
.side-nav button.active{background:linear-gradient(135deg,var(--primary-light),#fce7f3);color:var(--primary);box-shadow:inset 0 0 0 1px rgba(99,102,241,.2)}
.nav-ico{font-size:20px}
.sidebar-footer{padding:14px;border-top:1px solid var(--border)}
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:rgba(255,255,255,.8);backdrop-filter:blur(20px);padding:16px 24px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40;box-shadow:0 2px 12px rgba(15,23,42,.04)}
.topbar h1{font-size:20px;flex:1;font-weight:900;background:linear-gradient(135deg,var(--text),var(--primary));-webkit-background-clip:text;background-clip:text;color:transparent}
.menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text)}
.user-chip{background:linear-gradient(135deg,var(--primary-light),#fce7f3);color:var(--primary);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;border:1px solid var(--primary-light)}
.view{padding:24px;flex:1;animation:fadeIn .4s ease}

/* Stats */
.stat-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);display:flex;align-items:center;gap:16px;transition:.3s;animation:cardIn .5s ease backwards}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.stat-ico{font-size:36px;width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light),#fce7f3)}
.stat-label{color:var(--muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.stat-value{font-size:22px;font-weight:900;margin-top:4px;background:linear-gradient(135deg,var(--text),var(--primary));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-sub{color:var(--muted);font-size:11px;margin-top:4px}

/* POS */
.pos-layout{display:grid;grid-template-columns:1fr 380px;gap:20px;align-items:start}
.pos-search{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.pos-search input{flex:1;min-width:160px}
.pos-search select{width:170px}
.pos-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));max-height:calc(100vh-200px);overflow:auto;padding:4px}
.pos-grid::-webkit-scrollbar{width:6px}
.pos-grid::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}
.pos-item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:10px;cursor:pointer;transition:.25s;position:relative;overflow:hidden;box-shadow:0 2px 8px rgba(15,23,42,.04)}
.pos-item::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent,rgba(99,102,241,.08));opacity:0;transition:.25s}
.pos-item:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.pos-item:hover::before{opacity:1}
.pos-item.disabled{opacity:.35;cursor:not-allowed;filter:grayscale(.6)}
.pos-item img{width:100%;height:100px;object-fit:cover;border-radius:12px;transition:.3s}
.pos-item:hover img{transform:scale(1.05)}
.pos-img-ph{height:100px;display:flex;align-items:center;justify-content:center;font-size:40px;background:linear-gradient(135deg,var(--primary-light),#fce7f3);border-radius:12px}
.pos-name{font-weight:800;font-size:13px;margin-top:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pos-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:4px;font-weight:600}
.pos-avail{color:var(--success);font-weight:800;font-size:12px}
.pos-cart{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;position:sticky;top:80px;box-shadow:var(--shadow)}
.cart-h{font-weight:900;font-size:17px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.cart-count{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:900}
.cart-items{max-height:320px;overflow:auto;margin-bottom:12px;padding-right:4px}
.cart-items::-webkit-scrollbar{width:4px}
.cart-items::-webkit-scrollbar-thumb{background:var(--primary);border-radius:2px}
.cart-line{display:grid;grid-template-columns:1fr auto auto auto;gap:8px;align-items:center;padding:10px 0;border-bottom:1px solid var(--border);animation:slideIn .25s ease}
@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}
.cart-line-name{font-size:13px;font-weight:700}
.cart-line-ctrl{display:flex;align-items:center;gap:6px}
.qbtn{width:30px;height:30px;border:1px solid var(--border);background:#fff;border-radius:8px;cursor:pointer;font-weight:900;color:var(--text);transition:.15s}
.qbtn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.qty{min-width:28px;text-align:center;font-weight:900;cursor:pointer;padding:2px 6px;border-radius:6px;transition:.15s}
.qty:hover{background:var(--primary-light)}
.cart-line-total{font-size:13px;font-weight:900;color:var(--primary)}
.rm{background:none;border:none;color:var(--danger);cursor:pointer;font-size:16px;transition:.15s}
.rm:hover{transform:scale(1.2)}
.cart-totals{border-top:2px solid var(--border);padding-top:12px;margin-bottom:12px}
.cart-row{display:flex;justify-content:space-between;font-size:18px;font-weight:900}
.cart-actions{display:flex;gap:8px}

/* Inventory */
.inv-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}
.inv-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:.3s;box-shadow:0 2px 8px rgba(15,23,42,.04)}
.inv-card:hover{transform:translateY(-6px) scale(1.02);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.inv-img{height:150px;background:linear-gradient(135deg,var(--primary-light),#fce7f3);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.inv-img img{width:100%;height:100%;object-fit:cover;transition:.4s}
.inv-card:hover .inv-img img{transform:scale(1.1)}
.inv-ph{font-size:48px}
.inv-body{padding:14px}
.inv-name{font-weight:800;font-size:15px}
.inv-cat{color:var(--muted);font-size:12px;margin-top:3px}
.inv-row{display:flex;justify-content:space-between;align-items:center;margin-top:10px}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.4);display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px;backdrop-filter:blur(6px);animation:fadeIn .2s ease}
.modal{background:#fff;border:1px solid var(--border);border-radius:24px;max-width:560px;width:100%;max-height:90vh;overflow:auto;padding:28px;position:relative;box-shadow:var(--shadow-lg);animation:modalIn .3s cubic-bezier(.2,.8,.2,1)}
@keyframes modalIn{from{opacity:0;transform:scale(.9) translateY(20px)}to{opacity:1;transform:none}}
.modal h2{margin-bottom:14px;font-weight:900;font-size:20px;color:var(--text)}
.img-modal img{max-width:100%;max-height:70vh;border-radius:14px;box-shadow:var(--shadow)}
.detail-grid{display:grid;gap:8px;font-size:14px}
.receipt{max-width:420px}
.receipt-h{text-align:center;margin-bottom:14px}
.receipt-h h2{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.receipt-meta{display:flex;flex-direction:column;gap:3px;font-size:13px;color:var(--muted);margin-bottom:14px}
.receipt-actions{display:flex;gap:10px;justify-content:center;margin-top:16px}

/* Charts */
.bar-chart{display:flex;align-items:flex-end;gap:10px;height:180px;padding:10px 0}
.bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%}
.bar{width:100%;background:linear-gradient(180deg,var(--primary),var(--accent));border-radius:8px 8px 0 0;min-height:4px;transition:.4s;box-shadow:0 4px 12px var(--primary-glow)}
.bar-lbl{font-size:10px;color:var(--muted);font-weight:600}

/* Toast */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#fff;color:var(--text);padding:14px 24px;border-radius:14px;z-index:2000;box-shadow:var(--shadow-lg);font-size:14px;font-weight:600;border:1px solid var(--border);animation:toastIn .3s ease}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,30px) scale(.9)}to{opacity:1;transform:translate(-50%,0) scale(1)}}

/* Scrollbar */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:#f1f5f9}
::-webkit-scrollbar-thumb{background:linear-gradient(var(--primary),var(--accent));border-radius:4px}

/* Chat */
.chat-layout{display:grid;grid-template-columns:220px 1fr;gap:16px;align-items:start}
.chat-contacts{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:12px;box-shadow:var(--shadow)}
.chat-contact{display:block;width:100%;text-align:right;padding:10px 12px;border:none;background:transparent;border-radius:10px;cursor:pointer;font-weight:700;color:var(--muted);transition:.2s;margin-bottom:4px}
.chat-contact:hover{background:var(--bg-soft);color:var(--primary)}
.chat-contact.active{background:linear-gradient(135deg,var(--primary-light),#fce7f3);color:var(--primary)}
.chat-main{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;height:60vh}
.chat-messages{flex:1;overflow:auto;padding:8px;display:flex;flex-direction:column;gap:8px}
.chat-msg{display:flex;flex-direction:column;max-width:75%}
.chat-msg.me{align-self:flex-end;align-items:flex-end}
.chat-msg.them{align-self:flex-start;align-items:flex-start}
.chat-bubble{padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.4}
.chat-msg.me .chat-bubble{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.chat-msg.them .chat-bubble{background:var(--bg-soft);color:var(--text)}
.chat-meta{font-size:10px;color:var(--muted);margin-top:2px}
.chat-input{display:flex;gap:8px;margin-top:10px}
.chat-input input{flex:1}
@media (max-width:700px){.chat-layout{grid-template-columns:1fr}.chat-contacts{display:flex;gap:8px;overflow:auto}.chat-contact{width:auto;white-space:nowrap}}
@media print{
  .sidebar,.topbar,.toolbar,.btn,.receipt-actions,.menu-btn{display:none !important}
  body::before{display:none}
  .main{padding:0}
  .view{padding:0}
  .modal-backdrop{position:static;background:none;backdrop-filter:none}
  .modal{box-shadow:none;max-width:100%;background:#fff;color:#000}
}

/* Big buttons & touch */
.btn{padding:14px 20px;font-size:16px}
.btn-sm{padding:9px 14px;font-size:14px}
.pos-item{padding:12px}
.numpad-grid button{padding:18px;font-size:20px}
.qbtn{width:34px;height:34px;font-size:18px}
.cart-h{font-size:19px}
@media (max-width:600px){
  .btn{padding:16px 20px;font-size:17px}
  .pos-grid{grid-template-columns:repeat(2,1fr)}
  .numpad-grid button{padding:20px;font-size:22px}
}
@media(max-width:900px){
  .pos-layout{grid-template-columns:1fr}
  .pos-cart{position:static}
  .sidebar{position:fixed;right:0;top:0;z-index:100;transform:translateX(110%);transition:.3s}
  .sidebar.open{transform:translateX(0)}
  .menu-btn{display:block}
}
@media(max-width:600px){
  .stat-grid{grid-template-columns:1fr 1fr}
  .inv-grid{grid-template-columns:1fr 1fr}
  .view{padding:14px}
  .topbar{padding:12px 16px}
  .topbar h1{font-size:17px}
}
@media(max-width:420px){
  .stat-grid{grid-template-columns:1fr}
  .inv-grid{grid-template-columns:1fr}
  .pos-grid{grid-template-columns:repeat(2,1fr)}
}

/* Animations base */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes cardIn{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
.view{animation:fadeIn .4s ease}
.stat-card{animation:cardIn .5s ease backwards}
.stat-card:nth-child(2){animation-delay:.08s}
.stat-card:nth-child(3){animation-delay:.16s}
.stat-card:nth-child(4){animation-delay:.24s}

/* Mode toggle */
.mode-toggle{display:flex;gap:8px;margin-bottom:12px}
/* Numpad */
.numpad{margin:12px 0}
.numpad-display{font-size:32px;font-weight:900;text-align:center;padding:12px;background:var(--bg-soft);border-radius:12px;margin-bottom:10px;border:2px solid var(--primary)}
.numpad-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.numpad-grid button{padding:14px;font-size:18px;font-weight:900}

body.dark{
  --bg:#0f172a; --bg-soft:#1e293b; --card:#1e293b; --text:#f8fafc; --muted:#94a3b8; --border:#334155; --primary-light:#312e81;
  --shadow:0 10px 40px rgba(0,0,0,.3);
}
body.dark::before{background:
  radial-gradient(circle at 10% 10%, rgba(99,102,241,.15), transparent 35%),
  radial-gradient(circle at 90% 90%, rgba(236,72,153,.12), transparent 35%)}
body.dark .card,body.dark .table,body.dark .pos-item,body.dark .pos-cart,body.dark .inv-card{background:#1e293b}
body.dark input,body.dark select,body.dark textarea{background:#0f172a;color:#f8fafc;border-color:#334155}
body.dark .btn-ghost{background:#1e293b;color:#f8fafc;border-color:#334155}
body.dark .sidebar{background:linear-gradient(180deg,#1e293b,#0f172a)}
body.dark .topbar{background:rgba(30,41,59,.8)}
body.dark .modal{background:#1e293b;color:#f8fafc}
body.dark .toast{background:#1e293b;color:#f8fafc}
body.dark .auth-wrap{background:linear-gradient(135deg,#0f172a,#1e1b4b,#0f172a)}