/* --- QK-Bills Web App Styling --- */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Nunito:wght@400;600;700;800&display=swap');

:root {
    --primary-red: #F33535;
    --primary-red-hover: #D62828;
    --dark-bg: #111116;
    --light-bg: #F4F6F9;
    --card-bg: #FFFFFF;
    --border-color: #E2E8F0;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --sidebar-active: #F1F5F9;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* --- Layout Structure --- */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* --- Top Header (Fix on Top) --- */
.top-header {
    height: 60px;
    background-color: var(--dark-bg);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-section h1 {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 24px;
    letter-spacing: -0.5px;
}

.logo-section h1 span.qk {
    color: var(--primary-red);
}

.logo-section h1 span.bills {
    color: white;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.store-badge {
    background-color: rgba(255,255,255,0.1);
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: #E2E8F0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-header {
    border: none;
    outline: none;
    border-radius: 50px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-header.company {
    background-color: #FFE5E8;
    color: var(--primary-red);
}

.btn-header.company:hover {
    background-color: #FFCCD2;
    transform: translateY(-1px);
}

.btn-header.printer {
    background-color: var(--primary-red);
    color: white;
}

.btn-header.printer:hover {
    background-color: var(--primary-red-hover);
    box-shadow: 0 4px 12px rgba(243, 53, 53, 0.3);
    transform: translateY(-1px);
}

/* --- Sidebar --- */
.sidebar {
    width: 240px;
    background-color: white;
    border-right: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 60px; /* Offset for top header */
    height: calc(100vh - 60px);
    overflow: hidden;
    flex-shrink: 0;
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar.collapsed .menu-item a span {
    display: none;
}

.sidebar.collapsed .menu-item a {
    justify-content: center;
    padding: 12px 0;
}

/* Flicker-free preload styles */
.sidebar-collapsed-state .sidebar {
    width: 70px !important;
}

.sidebar-collapsed-state .sidebar .menu-item a span {
    display: none !important;
}

.sidebar-collapsed-state .sidebar .menu-item a {
    justify-content: center !important;
    padding: 12px 0 !important;
}

.menu-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 12px;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.menu-item a:hover {
    background-color: var(--sidebar-active);
    color: var(--primary-red);
}

.menu-item.active a {
    background-color: var(--sidebar-active);
    color: var(--primary-red);
    font-weight: 600;
}

.menu-item a svg {
    width: 18px;
    height: 18px;
    transition: transform 0.2s ease;
}

.menu-item a:hover svg {
    transform: scale(1.15);
}

/* --- Main Content Area --- */
.main-content {
    flex-grow: 1;
    margin-top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
    padding: 24px;
    background-color: var(--light-bg);
}

/* --- Page Components --- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

/* --- Table Styles (Inventory) --- */
.table-container {
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
    flex-wrap: wrap;
}

.search-input-wrapper {
    position: relative;
    flex-grow: 1;
    max-width: 400px;
}

.search-input-wrapper input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    outline: none;
    font-size: 14px;
    transition: all 0.2s;
}

.search-input-wrapper input:focus {
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(243, 53, 53, 0.15);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.btn {
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--text-primary);
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn:hover {
    background-color: var(--sidebar-active);
    border-color: var(--text-secondary);
}

.btn.btn-primary {
    background-color: var(--primary-red);
    color: white;
    border-color: var(--primary-red);
}

.btn.btn-primary:hover {
    background-color: var(--primary-red-hover);
    box-shadow: 0 4px 12px rgba(243, 53, 53, 0.2);
}

.btn.btn-edit {
    background-color: #F8FAFC;
    border-color: var(--border-color);
    color: #0284C7;
}

.btn.btn-edit:hover {
    background-color: #F0F9FF;
    border-color: #38BDF8;
}

.btn-icon-only {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: white;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-icon-only:hover {
    background-color: var(--sidebar-active);
}

.btn-icon-only.delete {
    color: #EF4444;
}

.btn-icon-only.delete:hover {
    background-color: #FEF2F2;
    border-color: #FCA5A5;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th {
    background-color: #F8FAFC;
    padding: 14px 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 16px 20px;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:hover td {
    background-color: #F8FAFC;
}

.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.yes {
    background-color: #DCFCE7;
    color: #15803D;
}

.status-badge.no {
    background-color: #FEE2E2;
    color: #B91C1C;
}

.pagination-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* --- Pagination Styles --- */
ul.pagination {
    display: flex;
    list-style: none;
    padding-left: 0;
    margin: 0;
    gap: 6px;
    align-items: center;
}

li.page-item {
    display: inline-block;
}

li.page-item .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    min-width: 34px;
    padding: 0 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
}

li.page-item .page-link:hover {
    background-color: var(--sidebar-active);
    border-color: var(--text-secondary);
    color: var(--primary-red);
}

li.page-item.active .page-link {
    background-color: var(--primary-red);
    border-color: var(--primary-red);
    color: white;
    box-shadow: 0 4px 10px rgba(243, 53, 53, 0.2);
}

li.page-item.disabled .page-link {
    background-color: #F8FAFC;
    border-color: var(--border-color);
    color: #94A3B8;
    cursor: not-allowed;
}

/* --- POS Screen Styles --- */
.pos-container {
    display: flex;
    gap: 20px;
    height: calc(100vh - 110px);
}

.pos-catalog-panel {
    flex-grow: 1;
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.pos-cart-panel {
    width: 420px;
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}

.pos-catalog-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    align-items: center;
}

.category-selector {
    width: 140px;
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.category-btn {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    text-align: left;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-primary);
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.category-btn:hover {
    background-color: var(--sidebar-active);
    color: var(--primary-red);
}

.category-btn.active {
    background-color: #FFE5E8;
    color: var(--primary-red);
    border-left-color: var(--primary-red);
    font-weight: 600;
}

.catalog-body {
    display: flex;
    flex-grow: 1;
    overflow: hidden;
}

.product-grid {
    flex-grow: 1;
    padding: 16px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    align-content: start;
}

.product-card {
    background-color: #F8FAFC;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 140px;
}

.product-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-red);
    box-shadow: var(--shadow-md);
}

.product-card .name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

.product-card .stock {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.product-card .price-tag {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-red);
    margin-top: auto;
}

/* --- Cart Styles --- */
.cart-header {
    background-color: #0284C7;
    color: white;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-count-badge {
    background-color: white;
    color: #0284C7;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

.cart-items-list {
    flex-grow: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cart-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

.cart-item-info {
    flex-grow: 1;
}

.cart-item-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.cart-item-price {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qty-btn {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: white;
    cursor: pointer;
    font-weight: 600;
}

.qty-btn:hover {
    background-color: var(--sidebar-active);
}

.qty-val {
    font-size: 13px;
    font-weight: 600;
    width: 20px;
    text-align: center;
}

.cart-totals-section {
    border-top: 1px solid var(--border-color);
    padding: 16px;
    background-color: #F8FAFC;
}

.pos-input-group {
    margin-bottom: 12px;
}

.pos-input-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
}

.pos-input-group input {
    width: 100%;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    outline: none;
    font-size: 13px;
}

.pos-input-group input:focus {
    border-color: #0284C7;
}

.totals-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.totals-row.grand-total {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
    margin-top: 8px;
}

.totals-row.grand-total span.amount {
    color: #16A34A;
}

.payment-modes {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    margin-bottom: 16px;
}

.payment-mode-btn {
    flex: 1;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: white;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s;
}

.payment-mode-btn.active {
    background-color: #FFE5E8;
    color: var(--primary-red);
    border-color: var(--primary-red);
}

.btn-checkout {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    background-color: var(--primary-red);
    color: white;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(243, 53, 53, 0.2);
}

.btn-checkout:hover {
    background-color: var(--primary-red-hover);
    transform: translateY(-1px);
}

.btn-checkout:disabled {
    background-color: #CBD5E1;
    color: #94A3B8;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* --- Modals, Forms & Inputs --- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    align-items: center;
    justify-content: center;
}

.modal-box {
    background: white;
    border-radius: 12px;
    width: 100%;
    max-width: 550px;
    box-shadow: var(--shadow-lg);
    animation: modalFadeIn 0.25s ease-out;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    background-color: var(--dark-bg);
    color: white;
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 700;
    margin: 0;
    font-family: 'Nunito', sans-serif;
}

.modal-close {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 24px;
    cursor: pointer;
    outline: none;
    line-height: 1;
    transition: color 0.15s;
}

.modal-close:hover {
    color: var(--primary-red);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background-color: #F8FAFC;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* --- Form Controls --- */
.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 11px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    outline: none;
    font-size: 14px;
    font-weight: 500;
    background-color: #F8FAFC;
    color: var(--text-primary);
    transition: all 0.2s ease-in-out;
    font-family: inherit;
}

.form-control:focus {
    background-color: white;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(243, 53, 53, 0.12);
}

.form-control::placeholder {
    color: #94A3B8;
}

/* Custom Select styling */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}

/* Custom File upload field styling */
.file-upload-wrapper {
    position: relative;
    border: 2px dashed var(--border-color);
    background-color: #F8FAFC;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-upload-wrapper:hover {
    border-color: var(--primary-red);
    background-color: #FFE5E8;
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
}

.file-upload-wrapper .upload-text {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.file-upload-wrapper .upload-icon {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.file-upload-wrapper:hover .upload-icon {
    color: var(--primary-red);
}

/* Custom Checkbox styling */
input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: #F8FAFC;
    display: inline-grid;
    place-content: center;
    cursor: pointer;
    transition: all 0.2s;
    vertical-align: middle;
}

input[type="checkbox"]:hover {
    border-color: var(--primary-red);
}

input[type="checkbox"]:checked {
    background-color: var(--primary-red);
    border-color: var(--primary-red);
}

input[type="checkbox"]::before {
    content: "";
    width: 10px;
    height: 10px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    box-shadow: inset 1em 1em white;
    transform-origin: center;
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

input[type="checkbox"]:checked::before {
    transform: scale(1);
}