/* =========================================================
   StockPro — Sales & Stock Management
   Design System & Layout
   ========================================================= */

:root{
  --primary:#2563EB; --primary-dark:#1d4ed8;
  --secondary:#1E293B;
  --success:#10B981; --warning:#F59E0B; --danger:#EF4444;
  --bg:#F8FAFC; --surface:#ffffff; --text:#334155; --muted:#64748b;
  --border:#e2e8f0; --sidebar-bg:#1E293B; --sidebar-text:#cbd5e1;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 10px 25px rgba(0,0,0,.12);
  --radius:12px; --radius-sm:8px;
  --sidebar-w:248px; --sidebar-collapsed:72px; --navbar-h:64px;
  --font:'Segoe UI',Roboto,system-ui,-apple-system,sans-serif;
}
html.dark{
  --bg:#0f172a; --surface:#1e293b; --text:#e2e8f0; --muted:#94a3b8;
  --border:#334155; --sidebar-bg:#020617; --sidebar-text:#cbd5e1;
  --shadow:0 1px 3px rgba(0,0,0,.4); --shadow-lg:0 10px 25px rgba(0,0,0,.5);
}

*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer}

/* ---------------- Layout ---------------- */
.layout{display:flex;min-height:100vh}
.main{flex:1;margin-left:var(--sidebar-w);transition:margin .25s;min-width:0}
body.sidebar-collapsed .main{margin-left:var(--sidebar-collapsed)}
.content{padding:24px}

/* ---------------- Sidebar ---------------- */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;
  transition:width .25s;z-index:100;overflow:hidden}
body.sidebar-collapsed .sidebar{width:var(--sidebar-collapsed)}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:20px;font-size:20px;font-weight:700;color:#fff}
.sidebar-brand i{color:var(--primary);font-size:24px;min-width:24px}
.sidebar-nav{flex:1;padding:8px;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:var(--radius-sm);
  color:var(--sidebar-text);margin-bottom:4px;white-space:nowrap;transition:.15s}
.nav-item i{min-width:20px;text-align:center;font-size:16px}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.active{background:var(--primary);color:#fff}
.sidebar-footer{padding:8px;border-top:1px solid rgba(255,255,255,.1)}
body.sidebar-collapsed .brand-text,
body.sidebar-collapsed .nav-text{display:none}

/* ---------------- Navbar ---------------- */
.navbar{position:sticky;top:0;height:var(--navbar-h);background:var(--surface);
  border-bottom:1px solid var(--border);display:flex;align-items:center;
  justify-content:space-between;padding:0 20px;gap:16px;z-index:90}
.navbar-left{display:flex;align-items:center;gap:14px}
.page-title{font-size:18px;font-weight:600}
.navbar-center{flex:1;max-width:480px}
.navbar-right{display:flex;align-items:center;gap:8px}
.icon-btn{width:40px;height:40px;border:none;background:transparent;border-radius:var(--radius-sm);
  color:var(--text);font-size:16px;position:relative;display:inline-flex;align-items:center;justify-content:center}
.icon-btn:hover{background:var(--bg)}
.badge{position:absolute;top:4px;right:4px;background:var(--danger);color:#fff;
  font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;padding:0 4px}

/* Global search */
.global-search{position:relative;width:100%}
.global-search>i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.global-search input{width:100%;padding:10px 14px 10px 40px;border:1px solid var(--border);
  border-radius:20px;background:var(--bg);color:var(--text);font-size:14px}
.global-search input:focus{outline:none;border-color:var(--primary)}
.search-results{position:absolute;top:48px;left:0;right:0;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);
  max-height:360px;overflow-y:auto;display:none;z-index:120}
.search-results.show{display:block}
.search-group-title{padding:8px 14px;font-size:11px;text-transform:uppercase;
  color:var(--muted);font-weight:700;background:var(--bg)}
.search-item{display:flex;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--border)}
.search-item:hover{background:var(--bg)}

/* ---------------- Dropdowns ---------------- */
.dropdown{position:relative}
.dropdown-menu{position:absolute;right:0;top:48px;min-width:240px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);
  display:none;z-index:120;overflow:hidden}
.dropdown-menu.show{display:block}
.dropdown-header{padding:12px 16px;font-weight:600;border-bottom:1px solid var(--border)}
.dropdown-link{display:flex;align-items:center;gap:10px;padding:12px 16px}
.dropdown-link:hover{background:var(--bg)}
.dropdown-foot{display:block;padding:10px 16px;text-align:center;color:var(--primary);
  border-top:1px solid var(--border);font-size:13px}
.user-chip{display:flex;align-items:center;gap:10px;padding:6px 10px;border:none;
  background:transparent;border-radius:var(--radius-sm);color:var(--text)}
.user-chip:hover{background:var(--bg)}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700}
.user-meta{display:flex;flex-direction:column;align-items:flex-start;line-height:1.1}
.user-name{font-weight:600;font-size:13px}
.user-role{font-size:11px;color:var(--muted)}
.notif-menu{min-width:320px}
.notif-list{max-height:320px;overflow-y:auto}
.notif-row{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;gap:10px}
.notif-row.unread{background:rgba(37,99,235,.06)}
.notif-row i{color:var(--primary)}
.notif-row.warning i{color:var(--warning)}
.notif-empty{padding:20px;text-align:center;color:var(--muted)}
.notif-title{font-weight:600}
.notif-time{font-size:11px;color:var(--muted)}

/* ---------------- Cards & KPI ---------------- */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.kpi-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow)}
.kpi-icon{width:52px;height:52px;border-radius:var(--radius-sm);display:flex;align-items:center;
  justify-content:center;font-size:22px;color:#fff;flex-shrink:0}
.kpi-info h3{font-size:24px;font-weight:700}
.kpi-info p{color:var(--muted);font-size:13px}
.bg-primary{background:var(--primary)} .bg-success{background:var(--success)}
.bg-warning{background:var(--warning)} .bg-danger{background:var(--danger)}
.bg-secondary{background:var(--secondary)}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:24px}
.card-head{display:flex;justify-content:space-between;align-items:center;
  padding:16px 20px;border-bottom:1px solid var(--border)}
.card-head h3{font-size:16px;font-weight:600}
.card-body{padding:20px}

.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.chart-box{position:relative;height:300px}

/* ---------------- Buttons ---------------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border:none;
  border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:.15s}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}
.btn-success{background:var(--success);color:#fff}
.btn-warning{background:var(--warning);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-light{background:var(--bg);color:var(--text);border:1px solid var(--border)}
.btn-sm{padding:6px 10px;font-size:12px}
.btn-block{width:100%;justify-content:center}
.btn-icon{width:34px;height:34px;padding:0;justify-content:center;border-radius:var(--radius-sm)}

/* ---------------- Tables ---------------- */
.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
th{font-size:12px;text-transform:uppercase;color:var(--muted);font-weight:700;background:var(--bg)}
tbody tr:hover{background:var(--bg)}
.tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600}
.tag-success{background:rgba(16,185,129,.15);color:var(--success)}
.tag-warning{background:rgba(245,158,11,.15);color:var(--warning)}
.tag-danger{background:rgba(239,68,68,.15);color:var(--danger)}
.tag-muted{background:var(--bg);color:var(--muted)}

/* ---------------- Forms ---------------- */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:13px}
.form-control,input[type=text],input[type=email],input[type=password],input[type=number],
input[type=date],input[type=datetime-local],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text);font-size:14px;font-family:inherit}
.form-control:focus,input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.checkbox{display:flex;align-items:center;gap:8px;margin-bottom:16px;font-size:13px}
.checkbox input{width:auto}

/* ---------------- Alerts & Toasts ---------------- */
.alert{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:16px}
.alert-danger{background:rgba(239,68,68,.12);color:var(--danger)}
.alert-warning{background:rgba(245,158,11,.12);color:#b45309}
.alert-success{background:rgba(16,185,129,.12);color:var(--success)}
.alert-info{background:rgba(37,99,235,.12);color:var(--primary)}
.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.toast{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);
  border-left:4px solid var(--primary);padding:14px 18px;border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);min-width:260px;animation:slideIn .25s}
.toast.success{border-left-color:var(--success)}.toast.error{border-left-color:var(--danger)}
.toast.warning{border-left-color:var(--warning)}
@keyframes slideIn{from{transform:translateX(40px);opacity:0}to{transform:none;opacity:1}}

/* ---------------- Modal ---------------- */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;
  align-items:flex-start;justify-content:center;z-index:1000;padding:40px 16px;overflow-y:auto}
.modal-overlay.show{display:flex}
.modal{background:var(--surface);border-radius:var(--radius);width:100%;max-width:560px;box-shadow:var(--shadow-lg)}
.modal.wide{max-width:880px}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-body{padding:20px}

/* ---------------- Toolbar / pagination ---------------- */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:16px}
.toolbar .filters{display:flex;gap:10px;flex-wrap:wrap}
.toolbar input,.toolbar select{width:auto;min-width:160px}
.pagination{display:flex;gap:6px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.pagination button{min-width:36px;height:36px;border:1px solid var(--border);background:var(--surface);
  border-radius:var(--radius-sm);color:var(--text)}
.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.pagination button:disabled{opacity:.4}

/* ---------------- Login ---------------- */
.login-body{background:linear-gradient(135deg,#2563EB,#1E293B);min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-wrap{width:100%;max-width:400px;padding:20px}
.login-card{background:#fff;border-radius:16px;padding:36px;box-shadow:var(--shadow-lg)}
.login-brand{text-align:center;margin-bottom:24px;color:var(--secondary)}
.login-brand i{font-size:42px;color:var(--primary)}
.login-brand h1{font-size:26px;margin-top:8px}
.login-brand p{color:var(--muted)}
.input-icon{position:relative}
.input-icon>i:first-child{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted)}
.input-icon input{padding-left:38px}
.toggle-pwd{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--muted);cursor:pointer}
.login-hint{margin-top:20px;text-align:center;font-size:12px;color:var(--muted)}
.login-hint code{background:#eef2ff;padding:2px 6px;border-radius:4px;color:var(--primary)}

/* ---------------- POS ---------------- */
.pos-grid{display:grid;grid-template-columns:1fr 380px;gap:20px;align-items:start}
.pos-products{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}
.pos-product{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:14px;text-align:center;cursor:pointer;transition:.15s}
.pos-product:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.pos-product .pp-name{font-weight:600;font-size:13px;margin-bottom:2px}
.pos-product .pp-code{font-size:11px;color:var(--muted);margin-bottom:8px}
.pos-product .pp-foot{display:flex;flex-direction:column;gap:2px}
.pos-product .pp-price{color:var(--primary);font-weight:700}
.pos-product .pp-stock{font-size:11px;color:var(--muted)}
.cart{position:sticky;top:84px}
.cart-items{max-height:320px;overflow-y:auto;margin-bottom:8px}
.cart-item{display:flex;align-items:center;gap:8px;padding:10px 0;border-bottom:1px solid var(--border)}
.cart-item .ci-info{flex:1;min-width:0}
.cart-item .ci-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-item .ci-price{font-size:11px;color:var(--muted)}
.cart-item .ci-qty{display:flex;align-items:center;gap:2px}
.cart-item .ci-qty button{width:24px;height:24px;border:1px solid var(--border);background:var(--bg);
  border-radius:6px;cursor:pointer;color:var(--text);line-height:1}
.cart-item .ci-qty input{width:42px;text-align:center;padding:2px}
.cart-item .ci-sub{font-size:12px;font-weight:700;min-width:84px;text-align:right}
.cart-item .ci-del{border:none;background:none;color:var(--danger);cursor:pointer;font-size:14px}
.cart-totals{padding-top:12px}
.cart-totals .line{display:flex;justify-content:space-between;padding:4px 0}
.cart-totals .grand{font-size:18px;font-weight:700;border-top:1px solid var(--border);padding-top:10px;margin-top:6px}

.empty-state{text-align:center;padding:48px;color:var(--muted)}
.empty-state i{font-size:42px;margin-bottom:12px;display:block}
.text-right{text-align:right}.text-center{text-align:center}
.flex{display:flex;gap:8px;align-items:center}
.mt{margin-top:16px}.mb{margin-bottom:16px}

/* ---------------- Responsive ---------------- */
@media(max-width:992px){
  .sidebar{transform:translateX(-100%);transition:transform .25s;width:var(--sidebar-w)}
  body.sidebar-open .sidebar{transform:none}
  .main{margin-left:0!important}
  .navbar-center{display:none}
  .pos-grid{grid-template-columns:1fr}
  .cart{position:static}
}
@media(max-width:640px){
  .content{padding:14px}
  .form-row{grid-template-columns:1fr}
  .user-meta{display:none}
  .kpi-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
}
.overlay-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:80;display:none}
body.sidebar-open .overlay-backdrop{display:block}
@media(min-width:993px){.overlay-backdrop{display:none!important}}

/* Inline status pill */
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:600;
  background:var(--bg);border:1px solid var(--border);color:var(--text)}
.pill.success{background:rgba(16,185,129,.12);color:var(--success);border-color:transparent}
.pill.warning{background:rgba(245,158,11,.12);color:var(--warning);border-color:transparent}
.pill.danger{background:rgba(239,68,68,.12);color:var(--danger);border-color:transparent}
.pill.info{background:rgba(37,99,235,.12);color:var(--primary);border-color:transparent}