body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, sans-serif;
}
.card {
    border: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    border-radius: 12px;
}
.card-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    font-weight: 600;
}
.btn-action {
    border-radius: 8px;
    padding: 10px 16px;
}
.table-responsive {
    border-radius: 10px;
    overflow: hidden;
}
.badge-stock-bajo {
    background-color: #dc3545;
    color: #fff;
}
#scanner-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}
#scanner-container video,
#scanner-container canvas {
    width: 100% !important;
    border-radius: 10px;
}
.scan-drawing {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 3px dashed #0d6efd;
    border-radius: 10px;
    pointer-events: none;
}
@media (max-width: 576px) {
    .btn-action { width: 100%; margin-bottom: 8px; }
    .navbar-brand { font-size: 1rem; }
}