:root{
    --navy:#0a2f68;
    --blue:#1458a6;
    --sky:#eaf4ff;
    --yellow:#f4e900;
    --green:#1d8a55;
    --red:#c43d3d;
    --orange:#c77812;
    --ink:#172033;
    --muted:#667085;
    --line:#dbe3ec;
    --surface:#ffffff;
    --bg:#f4f7fb;
    --shadow:0 8px 26px rgba(16,43,78,.08);
}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink)}
a{color:inherit}
.app-shell{min-height:100vh}
.topbar{position:fixed;z-index:50;top:0;left:0;right:0;height:70px;background:var(--navy);color:#fff;display:flex;align-items:center;padding:0 20px;box-shadow:0 2px 12px rgba(0,0,0,.18)}
.menu-button{display:none;border:0;background:transparent;color:#fff;font-size:28px;margin-right:10px}
.brand{display:flex;align-items:center;gap:11px}
.brand-drop,.login-logo{display:grid;place-items:center;background:var(--yellow);color:var(--navy);font-weight:900;border-radius:15px 15px 15px 4px}
.brand-drop{width:42px;height:42px}
.brand strong{display:block;font-size:18px;letter-spacing:.5px}
.brand small{display:block;opacity:.75;font-size:12px;margin-top:2px}
.topbar-user{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:14px}
.sidebar{position:fixed;z-index:40;top:70px;left:0;bottom:0;width:240px;background:#fff;border-right:1px solid var(--line);padding:18px 12px;overflow-y:auto}
.sidebar nav{display:grid;gap:6px}
.sidebar nav a{display:flex;align-items:center;gap:12px;text-decoration:none;padding:13px 14px;border-radius:12px;color:#31415a;font-weight:700}
.sidebar nav a span{width:24px;text-align:center;color:var(--blue)}
.sidebar nav a:hover,.sidebar nav a.active{background:var(--sky);color:var(--navy)}
.sidebar-note{margin-top:20px;background:#f8fafc;border:1px solid var(--line);padding:13px;border-radius:12px}
.sidebar-note strong,.sidebar-note small{display:block}
.sidebar-note small{margin-top:6px;color:var(--muted);line-height:1.45}
.content{margin-left:240px;padding:94px 24px 40px;max-width:1700px}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}
.page-head h1{font-size:28px;margin:0 0 6px}
.page-head p{margin:0;color:var(--muted);line-height:1.5}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-5{grid-template-columns:repeat(5,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.card h2,.card h3{margin:0 0 14px}
.card h2{font-size:20px}
.card h3{font-size:16px}
.stat-card{min-height:126px;display:flex;flex-direction:column;justify-content:space-between}
.stat-label{color:var(--muted);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.35px}
.stat-value{font-size:27px;font-weight:900;color:var(--navy);margin:10px 0 4px}
.stat-note{font-size:12px;color:var(--muted)}
.stock-card{border-top:5px solid var(--blue)}
.stock-card.low{border-top-color:var(--red)}
.stock-name{font-weight:800}
.stock-number{font-size:24px;font-weight:900;color:var(--navy);margin:12px 0 4px}
.stock-sub{font-size:13px;color:var(--muted)}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:26px 0 12px}
.section-title h2{margin:0;font-size:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:10px 14px;text-decoration:none;font-weight:800;cursor:pointer;font-size:14px}
.btn-primary{background:var(--blue);color:#fff}
.btn-success{background:var(--green);color:#fff}
.btn-danger{background:var(--red);color:#fff}
.btn-warning{background:var(--orange);color:#fff}
.btn-light{background:#fff;color:var(--navy)}
.btn-outline{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn-muted{background:#edf1f5;color:#44536a}
.btn-small{padding:7px 10px;font-size:12px}
.btn-block{width:100%}
form .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
form .form-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
label{font-size:13px;font-weight:800;color:#34445b}
input,select,textarea{width:100%;border:1px solid #cdd7e3;border-radius:10px;background:#fff;padding:11px 12px;font:inherit;color:var(--ink);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,88,166,.12)}
textarea{min-height:88px;resize:vertical}
.help{font-size:12px;color:var(--muted);line-height:1.45}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
th,td{padding:12px 13px;border-bottom:1px solid #e8edf3;text-align:left;vertical-align:top;font-size:13px}
th{background:#f7f9fc;color:#40506a;font-size:12px;text-transform:uppercase;letter-spacing:.3px}
tr:last-child td{border-bottom:0}
.text-right{text-align:right}
.text-center{text-align:center}
.text-danger{color:var(--red)}
.text-success{color:var(--green)}
.text-muted{color:var(--muted)}
.nowrap{white-space:nowrap}
.badge{display:inline-flex;align-items:center;padding:5px 8px;border-radius:999px;font-size:11px;font-weight:800;white-space:nowrap}
.badge-success{background:#e5f7ee;color:#176941}
.badge-danger{background:#fdeaea;color:#9a2e2e}
.badge-warning{background:#fff2dd;color:#945c0c}
.badge-info{background:#e5f1ff;color:#14518d}
.badge-muted{background:#edf1f5;color:#596579}
.alert{border-radius:12px;padding:12px 14px;margin-bottom:14px;font-size:14px;line-height:1.45}
.alert-success{background:#e8f7ef;color:#14613b;border:1px solid #bfe8d2}
.alert-danger{background:#fdecec;color:#942f2f;border:1px solid #f4caca}
.alert-warning{background:#fff5df;color:#805009;border:1px solid #f5dda9}
.alert-info{background:#eaf4ff;color:#174f86;border:1px solid #c9e2fa}
.empty{padding:28px;text-align:center;color:var(--muted)}
.kpi-line{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:10px 0;border-bottom:1px dashed var(--line)}
.kpi-line:last-child{border-bottom:0}
.kpi-line strong{font-size:16px}
.flow{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.flow span{background:var(--sky);color:var(--navy);font-weight:800;border-radius:999px;padding:8px 11px;font-size:12px}
.flow b{color:#8a98aa}
.inline-summary{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.inline-summary span{padding:8px 10px;background:#f7f9fc;border:1px solid var(--line);border-radius:9px;font-size:12px}
.photo-thumb{width:54px;height:54px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.quick-actions{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{padding:9px 12px;border-radius:9px;text-decoration:none;background:#eaf0f7;color:#40506a;font-weight:800;font-size:13px}
.tabs a.active{background:var(--blue);color:#fff}
.login-body{min-height:100vh;display:grid;place-items:center;background:linear-gradient(150deg,#07234d,#1458a6);padding:20px}
.login-card{width:min(420px,100%);background:#fff;border-radius:22px;padding:28px;box-shadow:0 25px 70px rgba(0,0,0,.25)}
.login-logo{width:64px;height:64px;margin:0 auto 12px;font-size:22px}
.login-card h1{text-align:center;margin:0;color:var(--navy)}
.login-card>p{text-align:center;color:var(--muted);margin:8px 0 22px}
.login-card form{display:grid;gap:10px}
.login-card small{display:block;text-align:center;color:var(--muted);margin-top:18px}
.invoice-sheet{max-width:850px;margin:0 auto;background:#fff;padding:28px;border-radius:16px;border:1px solid var(--line)}
.invoice-head{display:flex;justify-content:space-between;gap:20px;border-bottom:2px solid var(--navy);padding-bottom:18px;margin-bottom:18px}
.invoice-total{font-size:25px;font-weight:900;color:var(--navy)}
.two-column-info{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:18px}
@media (max-width:1200px){.grid-5{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){
    .menu-button{display:block}.sidebar{transform:translateX(-105%);transition:.2s}.sidebar.open{transform:translateX(0)}.content{margin-left:0;padding:88px 14px 30px}.topbar{padding:0 12px}.topbar-user span{display:none}.grid-5,.grid-4,.grid-3,.grid-2{grid-template-columns:1fr 1fr}.page-head{flex-direction:column}.page-head h1{font-size:24px}
}
@media (max-width:600px){
    .grid-5,.grid-4,.grid-3,.grid-2,form .form-grid,form .form-grid-3,.two-column-info{grid-template-columns:1fr}.card{padding:15px}.stat-value{font-size:23px}.brand small{display:none}.content{padding-left:10px;padding-right:10px}.topbar-user{gap:6px}.invoice-sheet{padding:16px}.invoice-head{flex-direction:column}
}
@media print{
    .topbar,.sidebar,.no-print,.alert{display:none!important}.content{margin:0;padding:0}.invoice-sheet{border:0;box-shadow:none;max-width:none;padding:0}.invoice-sheet .table-wrap{border:0}body{background:#fff}
}