:root{
  --primary:#0b5ed7;
  --primary-dark:#084298;
  --sidebar:#101828;
  --sidebar-muted:#98a2b3;
  --bg:#f5f7fb;
  --card:#fff;
  --border:#e5e7eb;
  --text:#1d2939;
  --muted:#667085;
  --success:#12b76a;
  --danger:#f04438;
  --warning:#f79009;
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{margin:0;font-family:"Cairo",sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{text-decoration:none}
.app-shell{display:flex;min-height:100vh}
.sidebar{width:270px;background:var(--sidebar);color:#fff;padding:18px 14px;display:flex;flex-direction:column;position:fixed;inset:0 0 0 auto;z-index:1040;overflow-y:auto;transition:.25s ease}
.brand-box{display:flex;align-items:center;gap:12px;padding:8px 8px 22px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:18px}
.brand-icon{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#2e90fa,#175cd3);display:grid;place-items:center;font-size:24px;box-shadow:0 8px 22px rgba(46,144,250,.25)}
.brand-box strong{display:block;font-size:16px}.brand-box small{color:var(--sidebar-muted);font-size:11px}
.sidebar .nav-link{color:#d0d5dd;padding:11px 13px;border-radius:11px;display:flex;align-items:center;gap:11px;font-weight:600;transition:.2s}
.sidebar .nav-link i{font-size:17px}.sidebar .nav-link:hover,.sidebar .nav-link.active{background:rgba(255,255,255,.1);color:#fff}.sidebar .nav-link.active{box-shadow:inset -3px 0 0 #53b1fd}
.sidebar-user{display:flex;align-items:center;gap:10px;border-top:1px solid rgba(255,255,255,.08);padding:16px 6px 0;margin-top:26px}.sidebar-user small{color:var(--sidebar-muted)}
.avatar{width:40px;height:40px;border-radius:12px;background:#344054;display:grid;place-items:center;font-weight:800}.logout-btn{color:#fda29b;font-size:19px;padding:6px}
.main-content{margin-right:270px;min-width:0;width:calc(100% - 270px)}
.topbar{height:76px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 26px;position:sticky;top:0;z-index:1020}
.menu-btn{display:none;font-size:22px}.global-search{flex:1;max-width:660px;position:relative}.global-search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:#98a2b3}.global-search input{width:100%;height:44px;border:1px solid var(--border);border-radius:12px;padding:0 44px 0 14px;outline:0;background:#f9fafb}.global-search input:focus{border-color:#84adff;background:#fff;box-shadow:0 0 0 4px rgba(46,144,250,.1)}
.page-wrap{padding:26px}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}.page-heading h1{font-size:26px;font-weight:800;margin:0 0 5px}.page-heading p{color:var(--muted);margin:0}.page-actions{display:flex;gap:8px;flex-wrap:wrap}
.card{border:1px solid var(--border);border-radius:16px;box-shadow:0 3px 12px rgba(16,24,40,.04)}.card-header{background:#fff;border-bottom:1px solid var(--border);padding:16px 18px;border-radius:16px 16px 0 0!important}.card-body{padding:18px}.card-title{font-weight:700}
.stat-card{padding:18px;display:flex;align-items:center;gap:14px;height:100%}.stat-icon{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:22px}.stat-icon.blue{background:#eff8ff;color:#1570ef}.stat-icon.green{background:#ecfdf3;color:#039855}.stat-icon.orange{background:#fffaeb;color:#dc6803}.stat-icon.red{background:#fef3f2;color:#d92d20}.stat-label{color:var(--muted);font-size:13px}.stat-value{font-size:23px;font-weight:800;margin-top:3px}
.table{margin-bottom:0}.table th{font-weight:700;color:#475467;background:#f9fafb;white-space:nowrap}.table td{vertical-align:middle}.table-responsive{border-radius:12px}.empty-state{text-align:center;padding:44px 20px;color:var(--muted)}.empty-state i{font-size:44px;display:block;margin-bottom:10px;color:#b9c2d0}
.btn{border-radius:10px;font-weight:600}.form-control,.form-select{border-radius:10px;border-color:#d0d5dd;min-height:42px}.form-control:focus,.form-select:focus{border-color:#84adff;box-shadow:0 0 0 4px rgba(46,144,250,.1)}.form-label{font-weight:700;font-size:13px}.required::after{content:" *";color:var(--danger)}
.badge{font-weight:600;padding:.45em .7em;border-radius:7px}.search-filter{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;margin-bottom:18px}.search-filter .row{row-gap:10px}
.invoice-total-box{background:#f8fafc;border:1px solid var(--border);border-radius:14px;padding:16px}.invoice-total-row{display:flex;justify-content:space-between;padding:7px 0}.invoice-total-row.final{font-size:18px;font-weight:800;border-top:1px dashed #d0d5dd;margin-top:5px;padding-top:12px}.product-picker{position:relative}.picker-results{position:absolute;z-index:1060;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 30px rgba(16,24,40,.12);width:100%;max-height:300px;overflow:auto;display:none}.picker-item{padding:11px 13px;border-bottom:1px solid #f2f4f7;cursor:pointer}.picker-item:hover{background:#f9fafb}.picker-item:last-child{border-bottom:0}.stock-low{color:var(--danger);font-weight:700}.stock-ok{color:var(--success);font-weight:700}
.login-page{min-height:100vh;background:radial-gradient(circle at 20% 10%,rgba(46,144,250,.2),transparent 35%),linear-gradient(135deg,#101828,#1d2939);display:grid;place-items:center;padding:20px}.login-card{width:min(430px,100%);background:#fff;border-radius:22px;padding:30px;box-shadow:0 30px 80px rgba(0,0,0,.28)}.login-logo{width:66px;height:66px;border-radius:20px;background:linear-gradient(135deg,#2e90fa,#175cd3);color:#fff;display:grid;place-items:center;font-size:32px;margin:0 auto 16px}.login-card h1{text-align:center;font-size:24px;font-weight:800}.login-card .subtitle{text-align:center;color:var(--muted);margin-bottom:24px}
.install-page{min-height:100vh;background:#f2f4f7;padding:30px 15px}.install-card{max-width:850px;margin:auto;background:#fff;border:1px solid var(--border);border-radius:20px;padding:28px;box-shadow:0 12px 35px rgba(16,24,40,.08)}
.sidebar-overlay{display:none}
@media(max-width:991px){.sidebar{transform:translateX(100%)}.sidebar.open{transform:translateX(0)}.main-content{margin-right:0;width:100%}.menu-btn{display:inline-flex}.sidebar-overlay{position:fixed;inset:0;background:rgba(16,24,40,.55);z-index:1030}.sidebar-overlay.show{display:block}.page-wrap{padding:18px}.topbar{padding:0 14px}.page-heading{flex-direction:column}.page-heading h1{font-size:22px}}
@media(max-width:575px){body{font-size:13px}.topbar .btn-primary{display:none!important}.page-wrap{padding:14px}.card-body{padding:14px}.stat-value{font-size:20px}.global-search input{font-size:12px}.page-actions{width:100%}.page-actions .btn{flex:1}.table{font-size:12px}.login-card{padding:24px 18px}}
@media print{.sidebar,.topbar,.page-heading,.no-print,.sidebar-overlay{display:none!important}.main-content{margin:0!important;width:100%!important}.page-wrap{padding:0}.card{box-shadow:none;border:0}}