/* ══════════════════════════════════════════
   AL-SHIFA POS - MODERN RESPONSIVE DESIGN
   WhatsApp-style bottom nav on mobile
   ══════════════════════════════════════════ */
:root {
  --green-50: #ecfdf5; --green-100: #d1fae5; --green-200: #a7f3d0;
  --green-500: #10b981; --green-600: #059669; --green-700: #047857; --green-dark: #065f46;
  --blue: #2563eb; --blue-light: #eff6ff;
  --amber: #f59e0b; --amber-light: #fffbeb;
  --red: #ef4444; --red-light: #fef2f2;
  --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb; --gray-300: #d1d5db;
  --gray-400: #9ca3af; --gray-500: #6b7280; --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937;
  --shadow-xs: 0 1px 2px rgba(0,0,0,.03); --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow: 0 4px 12px rgba(0,0,0,.06); --shadow-md: 0 8px 24px rgba(0,0,0,.08);
  --radius-sm: 8px; --radius: 12px; --radius-lg: 16px; --transition: .2s cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  background:#f5f7fa;color:var(--gray-800);line-height:1.5;
  -webkit-font-smoothing:antialiased;min-height:100vh;min-height:100dvh;
}
.wrapper{max-width:1400px;margin:0 auto;display:flex;flex-direction:column;min-height:100vh}

/* ── TOP BAR ──────────────────────── */
.topbar{
  background:var(--green-dark);color:#fff;padding:10px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  position:sticky;top:0;z-index:90;box-shadow:0 2px 8px rgba(0,0,0,.15);flex-shrink:0;flex-wrap:wrap;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.logo span{color:#a7f3d0}
.logo small{font-size:10px;opacity:.75;font-weight:400;background:rgba(255,255,255,.15);padding:2px 10px;border-radius:20px;margin-left:4px}
.nav-tabs{display:flex;gap:2px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.nav-tab{
  padding:8px 16px;border-radius:8px;font-size:13px;cursor:pointer;
  border:none;background:transparent;color:rgba(255,255,255,.75);font-weight:500;
  white-space:nowrap;transition:all var(--transition);font-family:inherit;
  display:flex;align-items:center;gap:6px;
}
.nav-tab:hover{background:rgba(255,255,255,.12);color:#fff}
.nav-tab.active{background:rgba(255,255,255,.2);color:#fff;font-weight:600}

/* ── BOTTOM NAV (Mobile WhatsApp Style) ── */
.bottom-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;
  background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
  border-top:1px solid var(--gray-200);z-index:100;
  padding:6px 4px;padding-bottom:max(8px,env(safe-area-inset-bottom));
  box-shadow:0 -4px 20px rgba(0,0,0,.06);justify-content:space-around;
}
.bottom-nav-btn{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 2px;border:none;background:transparent;cursor:pointer;
  border-radius:12px;color:var(--gray-500);font-size:10px;font-weight:500;
  transition:all var(--transition);font-family:inherit;min-width:0;
}
.bottom-nav-btn .nav-icon{font-size:22px;line-height:1;transition:var(--transition)}
.bottom-nav-btn .nav-label{font-size:10px;letter-spacing:.2px}
.bottom-nav-btn.active{color:var(--green-700);background:var(--green-50)}
.bottom-nav-btn.active .nav-icon{transform:scale(1.1)}

/* ── CONTENT ─────────────────────── */
.content{flex:1;padding:16px}
.page{display:none;animation:fadeSlideIn .3s ease}
.page.active{display:block}
@keyframes fadeSlideIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ── CARDS ────────────────────────── */
.card{
  background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);
  padding:18px 20px;margin-bottom:14px;box-shadow:var(--shadow-xs);transition:all var(--transition);
}
.card:hover{box-shadow:var(--shadow-sm)}
.card-title{
  font-size:12px;font-weight:600;color:var(--gray-500);text-transform:uppercase;
  letter-spacing:.6px;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}

/* ── FLEX/GRID ────────────────────── */
.flex{display:flex;gap:10px;align-items:center}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.flex1{flex:1}

/* ── INPUTS ───────────────────────── */
input[type=text],input[type=number],input[type=date],select,textarea{
  width:100%;padding:10px 14px;border:1.5px solid var(--gray-300);border-radius:10px;
  font-size:13.5px;background:#fff;color:var(--gray-800);transition:all var(--transition);font-family:inherit;
}
input:focus,select:focus{outline:none;border-color:var(--green-500);box-shadow:0 0 0 4px rgba(16,185,129,.08)}
label{font-size:11px;font-weight:600;color:var(--gray-600);display:block;margin-bottom:6px}

/* ── BUTTONS ──────────────────────── */
.btn{
  padding:10px 18px;border-radius:10px;font-size:13px;cursor:pointer;
  border:1.5px solid var(--gray-300);background:#fff;color:var(--gray-700);
  font-weight:500;transition:all var(--transition);white-space:nowrap;
  display:inline-flex;align-items:center;gap:6px;justify-content:center;font-family:inherit;
}
.btn:hover{background:var(--gray-50);border-color:var(--gray-400)}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--green-500);color:#fff;border-color:var(--green-500);font-weight:600;box-shadow:0 2px 10px rgba(16,185,129,.3)}
.btn-primary:hover{background:var(--green-600);border-color:var(--green-600);box-shadow:0 4px 18px rgba(16,185,129,.4);transform:translateY(-1px)}
.btn-danger{background:#fff;color:var(--red);border-color:#fecaca}
.btn-danger:hover{background:var(--red-light);border-color:var(--red)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}

/* ── SALE LAYOUT ──────────────────── */
.sale-layout{display:flex;flex-direction:column;gap:14px}
.sale-left{display:flex;flex-direction:column;gap:12px}
.sale-right{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow);display:flex;flex-direction:column}
.sale-right-top{padding:16px 18px;flex:1;overflow-y:auto;max-height:45vh}
.sale-right-bottom{border-top:1px solid var(--gray-200);padding:16px 18px;background:var(--gray-50)}

/* ── CART ─────────────────────────── */
.cart-item{display:flex;align-items:flex-start;gap:10px;padding:12px 8px;border-bottom:1px solid var(--gray-100);font-size:13px}
.cart-item:last-child{border-bottom:none}
.ci-info{flex:1;min-width:0}
.ci-name{font-weight:600;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ci-meta{font-size:11px;color:var(--gray-500);margin-top:2px}
.ci-price{font-weight:700;color:var(--green-700);white-space:nowrap}
.cart-empty{text-align:center;padding:35px 10px;color:var(--gray-400)}
.cart-empty .empty-icon{font-size:40px;display:block;margin-bottom:8px;opacity:.6}

/* ── SEARCH ───────────────────────── */
.med-item{
  padding:14px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius);
  cursor:pointer;transition:all var(--transition);margin-bottom:8px;background:#fff;
}
.med-item:hover{border-color:var(--green-400);background:var(--green-50);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.med-name{font-weight:600;font-size:14px}
.med-sub{font-size:11px;color:var(--gray-500);margin:4px 0;display:flex;gap:10px;flex-wrap:wrap}
.price-tags{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}

/* ── QTY PANEL ────────────────────── */
.qty-panel{background:var(--green-50);border:2px solid var(--green-200);border-radius:var(--radius-lg);padding:16px;display:none;margin-top:10px}
.qty-panel.show{display:block;animation:fadeSlideIn .25s ease}
.qty-type-row{display:flex;gap:8px;margin-bottom:12px}
.qty-btn{
  flex:1;padding:10px 8px;border-radius:10px;text-align:center;font-size:13px;
  cursor:pointer;border:2px solid var(--green-200);background:#fff;color:var(--green-700);
  font-weight:500;transition:all var(--transition);
}
.qty-btn.sel{background:var(--green-500);color:#fff;border-color:var(--green-500);font-weight:700}

/* ── BADGES ───────────────────────── */
.badge{display:inline-block;font-size:10px;padding:3px 10px;border-radius:20px;font-weight:600}
.badge-green{background:var(--green-50);color:var(--green-700)}
.badge-blue{background:var(--blue-light);color:var(--blue)}
.badge-amber{background:var(--amber-light);color:#92400e}
.badge-red{background:var(--red-light);color:var(--red)}

/* ── PRICE PREVIEW ────────────────── */
.price-preview{display:flex;gap:20px;background:linear-gradient(135deg,var(--green-50),var(--green-100));border-radius:var(--radius);padding:14px 16px;margin-top:6px}
.pp-item{text-align:center;flex:1}
.pp-val{font-size:18px;font-weight:700;color:var(--green-dark)}
.pp-lbl{font-size:10px;color:var(--green-600);margin-top:3px;font-weight:500}

/* ── TABLES ──────────────────────── */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl{width:100%;border-collapse:collapse;font-size:13px;min-width:700px}
.tbl th{text-align:left;padding:12px 14px;background:var(--gray-50);border-bottom:1px solid var(--gray-200);font-size:11px;font-weight:600;color:var(--gray-600);text-transform:uppercase;letter-spacing:.4px;white-space:nowrap}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--gray-100)}
.tbl tbody tr:hover td{background:#f8fdfb}

/* ── STAFF ───────────────────────── */
.staff-row{display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px solid var(--gray-100)}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--green-100),var(--green-200));display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--green-700);font-size:14px;flex-shrink:0}

/* ── TOAST ───────────────────────── */
#toast{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast-msg{background:#1f2937;color:#fff;padding:14px 20px;border-radius:var(--radius);font-size:13.5px;font-weight:500;box-shadow:var(--shadow-md);animation:toastIn .35s ease;pointer-events:all;max-width:380px}
.toast-msg.success{background:var(--green-600)}
.toast-msg.error{background:var(--red)}
.toast-msg.removing{animation:toastOut .3s ease forwards}
@keyframes toastIn{from{opacity:0;transform:translateX(120%)}to{opacity:1;transform:translateX(0)}}
@keyframes toastOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(120%)}}

/* ── MODAL ───────────────────────── */
#saleDetailModal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:999;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
#saleDetailModal.show{display:flex}

/* ── SCROLLBAR ───────────────────── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:10px}

/* ── RESPONSIVE ──────────────────── */
@media(min-width:769px){
  .content{padding:24px 16px}
  .sale-layout{display:grid;grid-template-columns:1fr 400px;gap:18px;align-items:start}
  .sale-left{order:1}
  .sale-right{order:2;position:sticky;top:80px;max-height:calc(100vh - 110px)}
  .sale-right-top{max-height:calc(100vh - 280px)}
  .bottom-nav{display:none!important}
  body{padding-bottom:0}
}
@media(max-width:768px){
  .topbar .nav-tabs.desktop-nav{display:none}
  .bottom-nav{display:flex}
  .g2{grid-template-columns:1fr}
  .sale-layout{display:flex;flex-direction:column}
  .sale-right{position:relative;top:auto;margin-top:14px}
  .sale-right-top{max-height:none}
  .card{padding:14px 16px}
  .btn{padding:10px 14px;font-size:12.5px}
  body{padding-bottom:75px}
  .content{padding:10px 6px}
  .tbl{min-width:500px}
}
@media(max-width:480px){
  .topbar{padding:8px 10px}
  .logo{font-size:15px}
  .bottom-nav-btn .nav-icon{font-size:20px}
  .bottom-nav-btn .nav-label{font-size:9px}
}