/* --- Global & Variables --- */
:root {
    --primary-color: #007aff;
    --success-color: #34c759;
    --danger-color: #ff3b30;
    --background-color: #f2f2f7;
    --surface-color: #ffffff;
    --secondary-surface-color: #f8f8f8;
    --text-color: #1c1c1e;
    --text-light-color: #636366;
    --border-color: #e5e5ea;
    --spacing: 16px;
    --border-radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    color: var(--text-color);
    font-size: 16px;
    background-color: var(--background-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Base Form & Button Styles --- */
.form-control,
.login-form input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1em;
    background-color: var(--surface-color);
    color: var(--text-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control:focus,
.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

.login-form input:-webkit-autofill,
.login-form input:-webkit-autofill:hover,
.login-form input:-webkit-autofill:focus,
.login-form input:-webkit-autofill:active {
    box-shadow: 0 0 0 30px var(--surface-color) inset !important;
    -webkit-text-fill-color: var(--text-color) !important;
}

.button { padding: 10px 15px; border-radius: var(--border-radius); border: 1px solid transparent; font-size: 1em; font-weight: 500; cursor: pointer; transition: all 0.2s ease-in-out; }
.button:disabled { background-color: #adb5bd; border-color: #adb5bd; color: white; cursor: not-allowed; opacity: 0.7; }
.button-primary { background-color: var(--primary-color); color: white; }
.button-primary:hover { background-color: #0062cc; }
.button-success { background-color: var(--success-color); color: white; }
.button-success:hover { background-color: #28a745; }
.button-danger { background-color: var(--danger-color); color: white; }
.button-danger:hover { background-color: #d92218; }
.button-secondary { background-color: var(--surface-color); color: var(--text-color); border: 1px solid var(--border-color); }
.button-secondary:hover { background-color: var(--secondary-surface-color); }

.icon-button { background: var(--surface-color); color: var(--text-light-color); border-radius: var(--border-radius); width: 38px; height: 38px; cursor: pointer; font-size: 1.2em; display: grid; place-items: center; }
.icon-button:hover { background-color: var(--secondary-surface-color); }
.icon-button.danger { color: var(--danger-color); }

/* --- Login Page Styles --- */
.login-page-body { display: flex; align-items: center; justify-content: center; height: 100vh; background-color: var(--background-color); }
.login-container { background: var(--surface-color); padding: 40px; border-radius: 12px; box-shadow: var(--shadow); width: 100%; max-width: 400px; text-align: center; }
.login-container h2 { margin-top: 0; }
.login-container p { color: var(--text-light-color); margin-bottom: 25px; }
.login-form .form-group { text-align: left; margin-bottom: 20px; }
.login-form label { display: block; margin-bottom: 5px; font-weight: 500; }
.login-form .remember-me { display: flex; align-items: center; justify-content: center; gap: 8px; }
.login-form .remember-me label { margin-bottom: 0; font-weight: normal; color: var(--text-light-color); }
.login-form .remember-me input { width: auto; }
.login-button { width: 100%; padding: 12px; background: var(--primary-color); color: white; border: none; border-radius: var(--border-radius); font-size: 1.1em; cursor: pointer; font-weight: 500; }
.login-button:hover { background-color: #0062cc; }
.flash-message { padding: 15px; margin-bottom: 20px; border-radius: var(--border-radius); background-color: var(--danger-color); color: white; text-align: left; }

/* --- Main Application Layout --- */
.app-container { display: flex; height: 100vh; overflow: hidden; }
.orders-sidebar-container, .cart-container { background: var(--surface-color); display: flex; flex-direction: column; box-shadow: var(--shadow); flex-shrink: 0; transition: all 0.3s ease-in-out; }
.orders-sidebar-container { flex-basis: 280px; border-right: 1px solid var(--border-color); }
.cart-container { flex-basis: 400px; border-left: 1px solid var(--border-color); }
.sidebar-header { padding: var(--spacing); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.sidebar-header h2 { margin: 0; font-size: 1.2em; }
.cart-header { display: flex; justify-content: space-between; align-items: center; }
.cart-header .header-buttons { display: flex; gap: 10px; }
.order-list { list-style: none; padding: 0; margin: 0; flex: 1; overflow-y: auto; }
.order-list-item { padding: var(--spacing); border-bottom: 1px solid var(--border-color); cursor: pointer; }
.order-list-item:hover { background-color: var(--secondary-surface-color); }

.products-container { position: relative; transition: all 0.3s ease-in-out; }
#toggle-orders-btn { position: absolute; top: 10px; left: 10px; z-index: 10; }
.orders-sidebar-container.collapsed { flex-basis: 0; min-width: 0; transform: translateX(-100%); border-right: none; overflow: hidden; }

/* --- Products Section --- */
.products-container { flex: 1; display: flex; flex-direction: column; padding: var(--spacing); overflow: hidden; }
.main-header { display: flex; justify-content: space-between; align-items: center; padding-bottom: var(--spacing); flex-shrink: 0; padding-left: 60px; }
.main-header .user-info { display: flex; align-items: center; gap: 12px; }
.logout-button { color: var(--primary-color); text-decoration: none; }
.filter-bar { display: flex; gap: var(--spacing); margin-bottom: var(--spacing); align-items: center; flex-shrink: 0; }
#product-search { flex-grow: 1; }
.product-grid { flex: 1; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--spacing); overflow-y: auto; padding: 5px; }

/* --- Product Card --- */
.product-card { background: var(--surface-color); border: 1px solid var(--border-color); border-radius: var(--border-radius); display: flex; flex-direction: column; position: relative; transition: box-shadow 0.2s, transform 0.2s; cursor: pointer; }
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.product-card .image-container { height: 180px; padding: var(--spacing); display: flex; align-items: center; justify-content: center; }
.product-card img { max-width: 100%; max-height: 100%; object-fit: contain; }
.product-details { padding: var(--spacing); text-align: center; border-top: 1px solid var(--border-color); flex-grow: 1; display: flex; flex-direction: column; justify-content: space-between; }
.product-name { font-weight: 600; font-size: 0.9em; margin-bottom: 8px; color: var(--text-color); }
.product-price { color: var(--primary-color); font-weight: bold; font-size: 1.1em; }
.product-stock { position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,0.6); color: white; font-size: 0.75em; padding: 3px 8px; border-radius: 12px; }

/* --- Cart & Customer Section --- */
.customer-section { padding: var(--spacing); border-bottom: 1px solid var(--border-color); }
.customer-search-wrapper { display: flex; gap: 10px; }
#selected-customer-container { background-color: var(--surface-color); border: 1px solid var(--border-color); padding: var(--spacing); border-radius: var(--border-radius); box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.selected-customer-header { font-weight: 600; font-size: 1.15em; padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.points-balance { margin-top: 0; display: flex; flex-direction: column; gap: 12px; }
.points-display { font-size: 1em; line-height: 1.4; }
.points-display small { font-size: 0.9em; }
.points-actions { display: flex; gap: 10px; }
.points-actions .form-control { flex-grow: 1; }
.points-actions .button { flex-shrink: 0; }

.cart-items { list-style: none; padding: var(--spacing); margin: 0; flex: 1; overflow-y: auto; }
.cart-empty-message { text-align: center; padding: 40px; color: var(--text-light-color); }
.cart-item { display: grid; grid-template-columns: 1fr auto auto; gap: var(--spacing); padding: 12px 0; border-bottom: 1px solid var(--border-color); align-items: center; }
.cart-item-name { font-weight: 500; }
.cart-item.discount { color: var(--success-color); }
.cart-item-remove { background: none; border: none; color: var(--danger-color); font-size: 1.6em; cursor: pointer; padding: 0 5px; line-height: 1; }
.cart-summary { padding: var(--spacing); border-top: 2px solid var(--border-color); background-color: var(--secondary-surface-color); }
.summary-line { display: flex; justify-content: space-between; font-size: 1.4em; font-weight: bold; margin-bottom: var(--spacing); }
.checkout-button { width: 100%; padding: 18px; background-color: var(--success-color); color: white; border: none; border-radius: var(--border-radius); font-size: 1.2em; font-weight: bold; cursor: pointer; }

/* --- Toggle Switch --- */
.toggle-switch { display: flex; align-items: center; gap: 8px; font-size: 0.9em; color: var(--text-light-color); cursor: pointer; white-space: nowrap; }
.toggle-switch input { width: 40px; height: 20px; appearance: none; background: #ccc; border-radius: 20px; position: relative; cursor: pointer; transition: background-color 0.2s; }
.toggle-switch input::before { content: ''; position: absolute; width: 16px; height: 16px; border-radius: 50%; background: white; top: 2px; left: 2px; transition: transform 0.2s; }
.toggle-switch input:checked { background: var(--success-color); }
.toggle-switch input:checked::before { transform: translateX(20px); }

/* --- General Helper Classes --- */
.loader { text-align: center; padding: 50px; color: var(--text-light-color); font-size: 1.1em; }

/* --- Modals --- */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; backdrop-filter: blur(4px); }
.modal-content { background: white; padding: 25px; border-radius: 12px; width: 90%; max-width: 500px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.modal-content.large { max-width: 650px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 20px; }
.modal-header h2 { margin: 0; }
.close-button { background: none; border: none; font-size: 2em; cursor: pointer; color: var(--text-light-color); line-height: 1; padding: 0; }
.modal-footer { border-top: 1px solid var(--border-color); padding-top: 20px; margin-top: 20px; display: flex; justify-content: flex-end; gap: 15px; }
.modal-content .form-group { margin-bottom: 15px; }
.modal-content .form-group label { display: block; margin-bottom: 6px; font-weight: 500; }
.payment-summary { display: flex; justify-content: space-between; font-size: 1.2em; font-weight: 500; padding: 15px; background-color: var(--secondary-surface-color); border-radius: var(--border-radius); margin-bottom: 20px; }
.payment-summary .remaining { font-weight: bold; }
#added-payments-list { list-style: none; padding: 0; margin: 0 0 20px 0; }
.add-payment-controls { display: grid; grid-template-columns: 1fr 1fr auto; gap: 15px; align-items: center; margin-bottom: 15px; }
#stripe-status-container { background-color: var(--secondary-surface-color); padding: 10px; border-radius: var(--border-radius); font-size: 0.9em; margin-top: 15px; }
.modal-footer .full-width { width: 100%; padding: 15px; font-size: 1.2em; }
#order-success-message { text-align: center; font-size: 1.2em; margin: 20px 0; }

#stripe-reader-list { list-style: none; padding: 0; margin: 0; max-height: 150px; overflow-y: auto; border-radius: var(--border-radius); margin-top: var(--spacing); }
#stripe-reader-list li { padding: 12px; border: 1px solid var(--border-color); border-radius: var(--border-radius); cursor: pointer; font-weight: 500; margin-bottom: 8px; }
#stripe-reader-list li:last-child { border-bottom: 1px solid var(--border-color); }
#stripe-reader-list li:hover { background-color: var(--secondary-surface-color); border-color: var(--primary-color); }
#stripe-reader-status { font-weight: 500; margin-bottom: 10px; }

/* --- Product Card: Edit Button Position --- */
.product-card .edit-btn { position: absolute; top: 8px; left: 8px; background: rgba(255, 255, 255, 0.8); border: 1px solid var(--border-color); color: var(--text-light-color); border-radius: 50%; width: 28px; height: 28px; cursor: pointer; font-size: 14px; z-index: 2; display: grid; place-items: center; line-height: 1; padding: 0; }
.product-card .edit-btn:hover { background: white; color: var(--text-color); }

/* --- Customer Search Results Dropdown --- */
#customer-search-container { position: relative; }
#customer-search-results { position: absolute; background: var(--surface-color); z-index: 100; border: 1px solid var(--border-color); border-top: none; width: 100%; box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1); border-bottom-left-radius: var(--border-radius); border-bottom-right-radius: var(--border-radius); overflow: hidden; }
#customer-search-results div { padding: 12px 15px; cursor: pointer; font-size: 0.9em; border-bottom: 1px solid var(--border-color); }
#customer-search-results div:last-child { border-bottom: none; }
#customer-search-results div:hover { background-color: var(--secondary-surface-color); color: var(--primary-color); }

/* --- PIN Modal Styles --- */
#pin-modal .modal-content { max-width: 350px; text-align: center; }
#pin-display { width: 100%; padding: 15px; font-size: 2em; text-align: center; letter-spacing: 0.5em; margin-bottom: 20px; border: 2px solid var(--border-color); }
#pin-display.error { border-color: var(--danger-color); animation: shake 0.5s; }
#pin-numpad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
#pin-numpad button { padding: 20px; font-size: 1.5em; border-radius: var(--border-radius); border: 1px solid var(--border-color); background-color: var(--surface-color); cursor: pointer; }
#pin-numpad button:hover { background-color: var(--secondary-surface-color); }

@keyframes shake {
  0%, 100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); }
}

/* --- End of Day Report Modal Styles --- */
#eod-report-table { width: 100%; border-collapse: collapse; margin-top: 15px; }
#eod-report-table th, #eod-report-table td { padding: 10px; border: 1px solid var(--border-color); text-align: left; }
#eod-report-table th { background-color: var(--secondary-surface-color); }
.eod-till-section { margin-bottom: 20px; }
.eod-till-section h3 { margin-bottom: 10px; border-bottom: 1px solid var(--border-color); padding-bottom: 5px; }