/* Global Styles */
html, body {
    margin: 0;
    padding: 0;
    background-color: #FFFFFF;
    font-family: Arial, sans-serif;
    color: #000000;
}

/* Screen containers */
.screen {
    padding: 20px;
}
.hidden {
    display: none !important;
}

/* Typography */
h1 {
    font-size: 32pt;
    margin-bottom: 20px;
    text-align: center;
}
label {
    font-size: 24pt;
    display: block;
    margin-top: 10px;
}

/* Inputs */
input[type="text"],
input[type="number"],
input[type="tel"],
input[type="search"] {
    width: 100%;
    height: 60px;
    padding: 10px;
    font-size: 24pt;
    box-sizing: border-box;
    margin-top: 10px;
    margin-bottom: 10px;
}

/* Buttons */
.btn {
    width: 100%;
    height: 120px;
    border: none;
    color: #FFFFFF;
    font-size: 24pt;
    margin-top: 10px;
    margin-bottom: 10px;
    cursor: pointer;
}

/* Button Variants */
#btn-add, #btn-save, #btn-sync, #btn-passcode {
    background-color: #007BFF;
}
#btn-view {
    background-color: #28A745;
}
#btn-tips {
    background-color: #FFC107;
    color: #000000;
}
#btn-cancel, #btn-back-list, #btn-back-tips {
    background-color: #6C757D;
}

/* Error and Note Messages */
.msg.error {
    color: #FF0000;
    font-size: 20pt;
    margin-top: 5px;
}
.note {
    color: #6C757D;
    font-size: 20pt;
    margin-top: 5px;
}

/* Table Styles */
#table-products {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}
#table-products th,
#table-products td {
    border: 1px solid #000000;
    padding: 10px;
    font-size: 20pt;
    text-align: left;
}
#table-products th {
    font-size: 22pt;
}
#table-products tbody tr {
    height: 50px;
}

/* Action buttons in table */
.action-btn {
    font-size: 20pt;
    padding: 5px;
    min-width: 50px;
    margin-right: 5px;
}

/* Profit display */
#calc-profit, #calc-margin {
    font-size: 20pt;
    margin-top: 10px;
}

/* Offline note */
#offline-note {
    font-size: 20pt;
    color: #6C757D;
    margin-top: 10px;
}

/* Responsive tweaks */
@media (max-width: 400px) {
    h1 { font-size: 28pt; }
    label, input, button { font-size: 20pt; }
    #table-products th, #table-products td { font-size: 18pt; }
}