:root{--bg:#f4f7fb;--card:#fff;--text:#14213d;--muted:#64748b;--primary:#1f3b7a;--accent:#8fa8d9;--danger:#b42318;--ok:#067647;--border:#e2e8f0}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{background:#102a5b;color:#fff;padding:22px;position:sticky;top:0;height:100vh}.brand{font-size:22px;font-weight:800;margin-bottom:25px}.nav a{display:block;padding:11px 12px;border-radius:10px;margin:4px 0;color:#e8eefc}.nav a:hover,.nav a.active{background:#ffffff18}.content{padding:28px;min-width:0}.topbar{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:20px}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.card{background:var(--card);border:1px solid var(--border);border-radius:15px;padding:18px;box-shadow:0 4px 16px #0f172a08}.metric{font-size:26px;font-weight:800;margin-top:5px}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;background:#e8eefc;color:#14213d}.btn.primary{background:var(--primary);color:#fff}.btn.danger{background:#fee4e2;color:var(--danger)}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 11px;background:#fff;font:inherit}label{display:block;font-size:13px;font-weight:700;color:#475569}label input,label select,label textarea{margin-top:5px}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--border);border-radius:14px}table{width:100%;border-collapse:collapse;min-width:720px}th,td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}th{background:#f8fafc}.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:800}.badge.ok{background:#dcfae6;color:var(--ok)}.badge.danger{background:#fee4e2;color:var(--danger)}.alert{padding:12px 14px;border-radius:10px;margin:12px 0}.alert.ok{background:#dcfae6;color:#05603a}.alert.danger{background:#fee4e2;color:#912018}.auth{display:grid;place-items:center;min-height:100vh;padding:20px}.auth-card{width:min(520px,100%);background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px}.grid{display:grid;gap:12px}hr{border:0;border-top:1px solid var(--border);width:100%}.pos{display:grid;grid-template-columns:1.3fr .7fr;gap:16px}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.product-btn{border:1px solid var(--border);background:#fff;padding:12px;border-radius:12px;text-align:left;cursor:pointer}.product-btn strong{display:block}.cart-line{display:grid;grid-template-columns:1fr 70px 90px 34px;gap:6px;align-items:center;padding:8px 0;border-bottom:1px solid var(--border)}.mobile-menu{display:none}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{display:none;position:fixed;z-index:20;width:260px}.sidebar.open{display:block}.mobile-menu{display:inline-flex}.cards{grid-template-columns:repeat(2,1fr)}.form-grid,.product-grid{grid-template-columns:1fr 1fr}.pos{grid-template-columns:1fr}.content{padding:16px}}@media(max-width:560px){.cards,.form-grid,.product-grid{grid-template-columns:1fr}.cart-line{grid-template-columns:1fr 58px 80px 32px}.topbar{align-items:flex-start}}