:root{--bg:#f4f7fb;--card:#fff;--dark:#0f172a;--dark2:#1e293b;--text:#111827;--muted:#64748b;--blue:#2563eb;--green:#16a34a;--orange:#f97316;--red:#dc2626;--purple:#7c3aed;--cyan:#0891b2;--border:#e5e7eb}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}
.app{display:flex;min-height:100vh}.side{width:270px;background:var(--dark);color:#e5e7eb;padding:18px;position:fixed;top:0;bottom:0;overflow:auto}.brand{font-size:20px;font-weight:900;margin-bottom:16px;line-height:1.25}.brand small{display:block;color:#94a3b8;font-size:12px;margin-top:4px}
.nav a{display:block;padding:11px 13px;border-radius:14px;margin:4px 0;color:#cbd5e1;font-size:14px}.nav a:hover,.nav a.active{background:var(--dark2);color:#fff}
.main{margin-left:270px;width:calc(100% - 270px);padding:22px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.top h1{margin:0;font-size:26px}.top p{margin:4px 0;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:18px;box-shadow:0 10px 28px rgba(15,23,42,.07);margin-bottom:16px}.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g5{grid-template-columns:repeat(5,1fr)}.g6{grid-template-columns:repeat(6,1fr)}
.stat{position:relative;overflow:hidden}.stat:after{content:"";position:absolute;right:-25px;top:-25px;width:95px;height:95px;border-radius:50%;background:rgba(37,99,235,.13)}.stat.green:after{background:rgba(22,163,74,.14)}.stat.orange:after{background:rgba(249,115,22,.15)}.stat.purple:after{background:rgba(124,58,237,.14)}.stat.red:after{background:rgba(220,38,38,.13)}.stat.cyan:after{background:rgba(8,145,178,.14)}
.label{color:var(--muted);font-weight:700}.value{font-size:25px;font-weight:900;margin-top:8px}.btn{display:inline-block;border:1px solid var(--border);background:#fff;border-radius:12px;padding:9px 13px;font-weight:700;cursor:pointer;margin:2px}.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn.green{background:var(--green);color:#fff;border-color:var(--green)}.btn.orange{background:var(--orange);color:#fff;border-color:var(--orange)}.btn.red{background:var(--red);color:#fff;border-color:var(--red)}.btn.purple{background:var(--purple);color:#fff;border-color:var(--purple)}.btn.small{font-size:12px;padding:6px 9px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;margin-bottom:8px}textarea{min-height:90px}.filters{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:14px}
.table{overflow:auto;border:1px solid var(--border);border-radius:18px;background:#fff}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{background:#f8fafc;color:#475569}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px;font-weight:700}.badge.green{background:#dcfce7;color:#166534}.badge.red{background:#fee2e2;color:#991b1b}.badge.orange{background:#ffedd5;color:#9a3412}.badge.cyan{background:#cffafe;color:#155e75}
.pos{display:grid;grid-template-columns:1.45fr .8fr;gap:16px}.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.p-card{border:1px solid var(--border);background:#fff;border-radius:18px;padding:14px;cursor:pointer}.p-card:hover{border-color:var(--blue);box-shadow:0 8px 20px rgba(37,99,235,.12)}
.invoice th:nth-child(1){background:#eff6ff}.invoice th:nth-child(2){background:#f0fdf4}.invoice th:nth-child(3){background:#fff7ed}.invoice th:nth-child(4){background:#fef2f2}.invoice th:nth-child(5){background:#f5f3ff}.invoice th:nth-child(6){background:#ecfeff}.total{display:flex;justify-content:space-between;border-top:2px dashed var(--border);padding-top:12px;margin-top:12px;font-weight:900;font-size:22px}
.sig{width:100%;height:180px;border:2px dashed var(--border);border-radius:16px;background:#fff;touch-action:none}.preview{max-width:420px;border:2px dashed #94a3b8;border-radius:16px;padding:18px;background:#fff}.chartbar{height:220px;display:flex;align-items:end;gap:10px;padding:10px;border:1px solid var(--border);border-radius:18px;background:#fff}.bar{flex:1;background:linear-gradient(180deg,#60a5fa,#2563eb);border-radius:10px 10px 0 0;min-height:8px;position:relative}.bar span{position:absolute;bottom:-22px;left:0;right:0;text-align:center;font-size:11px;color:#64748b}
.notice{padding:12px 14px;border-radius:14px;background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe;margin-bottom:12px}
@media(max-width:1100px){.side{position:relative;width:100%;height:auto}.app{display:block}.main{margin-left:0;width:100%}.g6,.g5,.g4,.g3,.g2,.filters,.pos,.products-grid{grid-template-columns:1fr}}
@media print{.side,.top,.no-print,.btn,.filters{display:none!important}.main{margin:0;width:100%;padding:0}.card{box-shadow:none;border:0}.app{display:block}}