:root{--bg:#0f172a;--primary:#2563eb}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#f1f5f9;color:#0f172a}
a{text-decoration:none;color:inherit}.topbar{position:sticky;top:0;z-index:20;background:var(--bg);color:#fff;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand a{font-weight:800}
.nav-toggle{display:none;background:#1e293b;color:#fff;border:0;padding:8px 10px;border-radius:10px}.shell{display:flex;min-height:calc(100vh - 58px)}.sidebar{width:250px;background:#fff;border-right:1px solid #e2e8f0;padding:14px;display:flex;flex-direction:column;gap:8px}.sidebar a{padding:12px;border-radius:12px}.sidebar a:hover{background:#eef2ff}.content{flex:1;padding:18px}.top-actions{display:flex;align-items:center;gap:10px}.user-pill{font-size:14px;color:#cbd5e1}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 14px;border-radius:12px;border:0;cursor:pointer;font-weight:700}.btn-primary{background:var(--primary);color:#fff}.btn-light{background:#fff;color:#0f172a}.full{width:100%}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:16px;box-shadow:0 8px 24px rgba(15,23,42,.06)}.split{display:grid;grid-template-columns:360px 1fr;gap:16px}.grid-3,.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.stats-grid .stat{background:#fff;padding:16px;border-radius:18px;border:1px solid #e2e8f0}.stat span{display:block;color:#64748b;font-size:14px}.stat strong{font-size:28px}
label{display:block;margin:10px 0 6px;font-size:14px;color:#334155}input,select,textarea{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:12px;background:#fff}textarea{min-height:90px;resize:vertical}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid #e2e8f0;text-align:left;font-size:14px}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px}.alert.success{background:#dcfce7;color:#166534}.alert.danger{background:#fee2e2;color:#991b1b}.centered{max-width:460px;margin:16px auto 0}
.auth-body{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#dbeafe,#eff6ff)}.auth-wrap{width:min(100%,430px);padding:16px}.muted{color:#64748b}.demo-box{margin-top:14px;padding:12px;border-radius:12px;background:#f8fafc;border:1px dashed #cbd5e1}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:center;padding:32px 0}.badge{display:inline-block;background:#dbeafe;color:#1d4ed8;padding:8px 10px;border-radius:999px;font-size:12px;font-weight:800}.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.05;margin:12px 0}.hero p{font-size:18px;color:#475569}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.hero-card{background:linear-gradient(180deg,#0f172a,#1e293b);color:#fff;padding:18px;border-radius:22px}.metric{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}.metric:last-child{border-bottom:0}
.inline-form{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.inline-form>div{flex:1}.pos-layout{grid-template-columns:340px 1fr}.totals{display:grid;gap:8px;margin:14px 0}.grand{font-size:20px}
@media (max-width:980px){.split,.grid-3,.stats-grid,.hero,.pos-layout{grid-template-columns:1fr}.nav-toggle{display:inline-flex}.sidebar{position:fixed;left:-270px;top:58px;bottom:0;z-index:30;transition:.2s}body.nav-open .sidebar{left:0}.content{padding:14px}}