/* ===================================
   MODERN POS - CSS FRAMEWORK
   Rounded cards with thick borders design
   =================================== */

/* === CSS RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --primary: #FFD93D;        /* Yellow */
    --primary-dark: #F4C430;   /* Gold */
    --primary-light: #FFF4CC;  /* Light Yellow */
    
    --secondary: #6BCF7F;      /* Green */
    --accent: #4A90E2;         /* Blue */
    --accent-orange: #FF8C42;  /* Orange */
    
    --bg-primary: #F5F5F5;     /* Light Gray */
    --bg-secondary: #FFFFFF;   /* White */
    --bg-card: #FEFEFE;        /* Off White */
    
    --text-primary: #1A1A1A;   /* Almost Black */
    --text-secondary: #666666; /* Gray */
    --text-light: #999999;     /* Light Gray */
    
    --border: #000000;         /* Black */
    --border-width: 3px;       /* Thick borders */
    --shadow: rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* === HEADER === */
.header {
    background: var(--bg-secondary);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: var(--border-width) solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo i {
    width: 36px;
    height: 36px;
    stroke-width: 2.5;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* === BUTTONS === */
.btn-icon {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

.btn-icon:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-icon.active {
    background: var(--primary);
}

.btn-icon i {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-primary);
    border: var(--border-width) solid var(--border);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 2px 8px var(--shadow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: var(--border-width) solid var(--border);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-secondary:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-checkout {
    width: 100%;
    background: var(--secondary);
    color: white;
    border: var(--border-width) solid var(--border);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 700;
    font-size: 1.125rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 16px rgba(107, 207, 127, 0.3);
}

.btn-checkout:hover {
    background: #5AB86E;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(107, 207, 127, 0.4);
}

/* === MAIN CONTAINER === */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* === VIEWS === */
.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.view-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* === CARD COMPONENT === */
.card {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-primary);
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

/* === POS LAYOUT === */
.pos-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--spacing-xl);
    min-height: calc(100vh - 200px);
}

/* === CART PANEL === */
.cart-panel {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 16px var(--shadow);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-primary);
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* === BARCODE SCANNER === */
.barcode-scanner {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.barcode-scanner input {
    flex: 1;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: white;
    font-weight: 500;
}

.barcode-scanner input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 217, 61, 0.2);
}

/* === CART ITEMS === */
.cart-items {
    flex: 1;
    overflow-y: auto;
    margin-bottom: var(--spacing-lg);
    padding-right: var(--spacing-sm);
}

.cart-items::-webkit-scrollbar {
    width: 8px;
}

.cart-items::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
}

.cart-items::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: var(--radius-sm);
}

.empty-cart {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-light);
}

.empty-cart i {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.cart-item {
    background: white;
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.cart-item:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px var(--shadow);
}

.cart-item-info h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.cart-item-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
}

.quantity-control button {
    background: var(--text-primary);
    color: white;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.quantity-control button:hover {
    background: var(--primary);
    color: var(--text-primary);
}

.quantity-control span {
    min-width: 30px;
    text-align: center;
    font-weight: 600;
}

.cart-item-price {
    font-weight: 700;
    font-size: 1.125rem;
}

.remove-item {
    background: #FF4444;
    color: white;
    border: none;
    padding: var(--spacing-xs);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-item:hover {
    background: #CC0000;
}

/* === CART SUMMARY === */
.cart-summary {
    background: var(--primary-light);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-weight: 500;
}

.summary-row.total {
    border-top: 2px solid var(--border);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* === PRODUCT GRID === */
.product-grid-panel {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 16px var(--shadow);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: white;
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 217, 61, 0.2);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-md);
    overflow-y: auto;
    padding-right: var(--spacing-sm);
}

.product-card {
    background: white;
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 4px 12px var(--shadow);
}

.product-card i {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
}

.product-card h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.product-card .price {
    color: var(--secondary);
    font-weight: 700;
    font-size: 1.125rem;
}

.product-card .stock {
    color: var(--text-light);
    font-size: 0.8125rem;
    margin-top: var(--spacing-xs);
}

/* === ADMIN DASHBOARD === */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px var(--shadow);
}

.stat-card.yellow {
    background: var(--primary-light);
}

.stat-card.green {
    background: #E8F8EC;
}

.stat-card.blue {
    background: #E3F2FD;
}

.stat-card.orange {
    background: #FFF3E0;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: var(--border-width) solid var(--border);
    background: white;
}

.stat-icon i {
    width: 32px;
    height: 32px;
}

.stat-icon.yellow i {
    color: var(--primary-dark);
}

.stat-icon.green i {
    color: var(--secondary);
}

.stat-icon.blue i {
    color: var(--accent);
}

.stat-icon.orange i {
    color: var(--accent-orange);
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
}

.stat-content .trend {
    font-size: 0.8125rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-content .trend.up {
    color: var(--secondary);
}

.stat-content .trend.down {
    color: #FF4444;
}

/* === DATA TABLES === */
.data-table {
    width: 100%;
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 8px var(--shadow);
}

.data-table thead {
    background: var(--primary);
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 700;
    border-bottom: var(--border-width) solid var(--border);
}

.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--bg-primary);
}

.data-table tbody tr:hover {
    background: var(--bg-primary);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.table-actions button {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-edit {
    background: var(--accent);
    color: white;
}

.btn-edit:hover {
    background: #3A7BC8;
}

.btn-delete {
    background: #FF4444;
    color: white;
}

.btn-delete:hover {
    background: #CC0000;
}

.btn-stock {
    background: var(--accent-orange);
    color: white;
}

.btn-stock:hover {
    background: #E67A2E;
}

/* === BADGES === */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    border: 2px solid var(--border);
}

.badge-success {
    background: var(--secondary);
    color: white;
}

.badge-warning {
    background: var(--accent-orange);
    color: white;
}

.badge-danger {
    background: #FF4444;
    color: white;
}

/* === MODALS === */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-primary);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* === FORMS === */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: white;
    font-weight: 500;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 217, 61, 0.2);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* === CHECKOUT MODAL === */
.checkout-summary {
    text-align: center;
}

.checkout-total {
    background: var(--primary);
    border: var(--border-width) solid var(--border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.checkout-total span:first-child {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.checkout-total span:last-child {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.payment-btn {
    background: white;
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.payment-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-4px);
    box-shadow: 0 4px 12px var(--shadow);
}

.payment-btn i {
    width: 48px;
    height: 48px;
}

.payment-btn span {
    font-weight: 600;
}

/* === RECEIPT === */
.receipt-content {
    max-width: 400px;
}

.receipt {
    background: white;
    border: 2px dashed var(--border);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.receipt-header {
    text-align: center;
    border-bottom: 2px dashed var(--border);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.receipt-header h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.receipt-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.receipt-items {
    margin-bottom: var(--spacing-md);
}

.receipt-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--bg-primary);
}

.receipt-totals {
    border-top: 2px dashed var(--border);
    padding-top: var(--spacing-md);
}

.receipt-total-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
}

.receipt-total-row.final {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 2px solid var(--border);
}

.receipt-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 2px dashed var(--border);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.receipt-actions {
    display: flex;
    gap: var(--spacing-md);
}

.receipt-actions button {
    flex: 1;
}

/* === DATE FILTER === */
.date-filter {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.date-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    background: white;
    font-weight: 500;
}

.date-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .pos-layout {
        grid-template-columns: 1fr;
    }
    
    .cart-panel {
        order: 2;
    }
    
    .product-grid-panel {
        order: 1;
        max-height: 500px;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    
    .payment-methods {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* === PRINT STYLES === */
@media print {
    body * {
        visibility: hidden;
    }
    
    .receipt,
    .receipt * {
        visibility: visible;
    }
    
    .receipt {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
}

/* === UTILITY CLASSES === */
.text-center {
    text-align: center;
}

.hidden {
    display: none;
}