:root{--mt:#0f766e;--mt-dark:#134e4a;--bg:#f4f7f8}
body{background:var(--bg);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}
.navbar-brand{font-weight:800;letter-spacing:.2px}
.sidebar{min-height:calc(100vh - 56px);background:#fff;border-right:1px solid #e5e7eb}
.sidebar .nav-link{color:#334155;border-radius:.5rem;margin:.1rem .5rem}
.sidebar .nav-link:hover{background:#ecfdf5;color:var(--mt-dark)}
.card{border:0;box-shadow:0 1px 3px rgba(15,23,42,.08)}
.btn-primary{background:var(--mt);border-color:var(--mt)}
.pos-shell{height:calc(100vh - 80px)}
.pos-products,.pos-cart{height:100%;overflow:auto}
.touch-btn{min-height:52px;font-size:1.05rem}
.product-tile{min-height:92px;cursor:pointer}
.product-tile:hover{outline:2px solid #99f6e4}
@media(max-width:991px){.sidebar{display:none}.pos-shell{height:auto}.pos-cart{min-height:45vh}}