:root {
    --primary-color: #FFD300;     /* Supeco Bright Yellow */
    --secondary-color: #111111;   /* Supeco Matte Black */
    --accent-color: #E60000;      /* Supeco Accent/Discount Red */
    --success-color: #2ecc71;
    --warning-color: #FFD300;
    --light-bg: #F5F5F5;
    --white: #ffffff;
    --text-color: #111111;
    --border-color: #cccccc;
    --shadow: 0 4px 10px rgba(0,0,0,0.08);
    --font-family: 'Cairo', sans-serif;
}

[data-theme="dark"] {
    --light-bg: #111111;
    --white: #1e1e1e;
    --text-color: #ffffff;
    --border-color: #333333;
    --secondary-color: #000000;
    --shadow: 0 4px 10px rgba(0,0,0,0.3);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--light-bg);
    color: var(--text-color);
    direction: rtl;
    overflow-x: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: linear-gradient(180deg, var(--secondary-color) 0%, #000000 100%);
    color: var(--white);
    display: flex;
    flex-direction: column;
    transition: width 0.3s;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.logo {
    padding: 20px;
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.2);
}

.sidebar nav ul {
    list-style: none;
    padding: 0;
}

.sidebar nav ul li {
    padding: 15px 20px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
    border-right: 4px solid transparent;
}

.sidebar nav ul li:hover, .sidebar nav ul li.active {
    background-color: rgba(255,255,255,0.1);
    border-right-color: var(--primary-color);
    padding-right: 25px;
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: var(--light-bg);
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* POS Layout */
.pos-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    height: calc(100vh - 40px);
}

.products-area {
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow: hidden;
}

.pos-header {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-bar {
    flex: 1;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 10px 40px 10px 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-family);
}

.search-bar i {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
}

.categories-filter {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.filter-btn {
    padding: 8px 15px;
    border: 1px solid var(--border-color);
    background: var(--white);
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: #111111;
    border-color: var(--primary-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
    overflow-y: auto;
    padding: 5px;
}

/* Product Card Styles */
.product-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    border: 1px solid transparent;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-color);
}

.product-card.low-stock {
    border-color: var(--accent-color);
}

.product-image {
    position: relative;
    width: 100%;
    padding-top: 75%; /* 4:3 Aspect Ratio */
    background-color: #f1f5f9;
    overflow: hidden;
}

.product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.stock-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    z-index: 1;
}

.stock-badge.available {
    background-color: var(--success-color);
}

.stock-badge.low {
    background-color: var(--accent-color);
}

.product-details {
    padding: 16px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
}

.product-details h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 0 0 12px 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid #f1f5f9;
}

.product-details .price {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary-color);
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.product-details .price small {
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
}

.stock-count {
    font-size: 0.8rem;
    color: #64748b;
    font-weight: 500;
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
}

/* Cart Area */
.cart-area {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.cart-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--secondary-color);
    color: var(--white);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.cart-item:hover {
    background-color: #f9f9f9;
}

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

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

.qty-btn {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--light-bg);
    cursor: pointer;
}

/* Quick Cash Buttons */
.quick-cash-panel {
    padding: 15px;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
}

.panel-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #64748b;
    margin-bottom: 10px;
    text-align: center;
}

.cash-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.cash-btn {
    padding: 10px 5px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.cash-btn img {
    width: 100%;
    max-width: 70px;
    height: 42px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
    transition: transform 0.2s;
    background-color: #e2e8f0; /* Fallback background */
}

.cash-btn:hover {
    background: #f8fafc;
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.cash-btn:hover img {
    transform: scale(1.05);
}

.quick-cash-modal {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.cash-btn-modal {
    padding: 10px 5px;
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    color: var(--text-color);
}

.cash-btn-modal img {
    width: 100%;
    max-width: 90px;
    height: 55px;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: transform 0.2s;
    background-color: #e2e8f0; /* Fallback background */
}

.cash-btn-modal:hover img {
    transform: scale(1.05);
}

.cash-btn-modal i {
    font-size: 1.5rem;
}

.cash-btn-modal:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.cash-btn-modal.clear {
    background: #fee2e2;
    color: #ef4444;
    border-color: #fecaca;
}

.cash-btn-modal.clear:hover {
    background: #ef4444;
    color: white;
}

.cart-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
    background: var(--light-bg);
}

.cart-summary {
    margin-bottom: 15px;
    font-size: 1.2rem;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
}

.cart-actions {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-family);
    transition: all 0.2s;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    opacity: 0.95;
}

.btn:active {
    transform: translateY(0);
}

.btn-primary { background: var(--primary-color); color: #000000; }
.btn-secondary { background: var(--secondary-color); color: var(--white); }
.btn-success { background: var(--success-color); color: var(--white); }
.btn-warning { background: var(--warning-color); color: var(--text-color); }
.btn-danger { background: var(--accent-color); color: var(--white); }
.btn-icon { background: none; border: none; cursor: pointer; color: var(--white); }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }

/* Tables */
.table-container {
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow-x: auto;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--light-bg);
    font-weight: bold;
}

/* Dashboard */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stat-card {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #111111;
}

.stat-card.warning .stat-icon {
    color: #ffd300;
    background: #332200;
}

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

.modal-content {
    background: var(--white);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideDown 0.3s;
}

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

.modal-header {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-modal {
    cursor: pointer;
    font-size: 1.5rem;
}

.modal-body {
    padding: 20px;
}

/* Image Upload Styles */
.image-upload-wrapper {
    border: 2px dashed #cbd5e1;
    padding: 20px;
    border-radius: 12px;
    background: #f8fafc;
    transition: all 0.3s;
}

.image-upload-wrapper:hover {
    border-color: var(--primary-color);
    background: #f1f5f9;
}

#image-preview-container {
    position: relative;
    padding: 10px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

#product-image-preview {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
}

.w-full {
    width: 100%;
}

.modal-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
    text-align: left;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-family);
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

.input-group {
    display: flex;
    gap: 5px;
}

/* Scanner Styles */
#scanner-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    position: relative;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 4/3;
    border: 4px solid transparent;
    transition: border-color 0.3s;
}

#scanner-container::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 10%;
    width: 80%;
    height: 2px;
    background: rgba(231, 76, 60, 0.6);
    box-shadow: 0 0 8px rgba(231, 76, 60, 0.8);
    animation: scanMove 2s infinite ease-in-out;
    z-index: 10;
}

@keyframes scanMove {
    0%, 100% { top: 20%; }
    50% { top: 80%; }
}

#scanner-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanner-controls-overlay {
    position: absolute;
    bottom: 15px;
    right: 15px;
    z-index: 20;
}

.btn-icon-circle {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon-circle:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.btn-icon-circle.active {
    background: var(--warning-color);
    color: var(--secondary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0 10px;
    }
    
    .sidebar nav ul {
        display: flex;
        overflow-x: auto;
    }
    
    .sidebar nav ul li span {
        display: none;
    }
    
    .pos-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .cart-area {
        height: 400px;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 10px;
    }

    .product-details {
        padding: 10px;
    }

    .product-details h4 {
        font-size: 0.9rem;
        margin-bottom: 8px;
    }

    .product-details .price {
        font-size: 1rem;
    }
}