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

:root {
    --primary-green: #4CAF50;
    --dark-green: #388E3C;
    --light-green: #C8E6C9;
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --dark-gray: #333333;
    --border-color: #DDDDDD;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.green-bg {
    background-color: var(--primary-green);
    color: var(--white);
}

.white-bg {
    background-color: var(--white);
    color: var(--dark-gray);
}

/* Navigation */
nav {
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.1rem;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

.nav-actions {
    display: flex;
    gap: 1.5rem;
}

.nav-actions a {
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
}

.admin-link {
    background-color: var(--dark-green);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

/* Homepage Layout */
.home-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

/* Sidebar */
.sidebar {
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: fit-content;
}

.sidebar h3 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-green);
}

.category-list {
    list-style: none;
}

.category-item {
    margin-bottom: 0.5rem;
}

.category-item > a {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: bold;
    display: block;
    padding: 0.5rem 0;
}

.category-item > a:hover {
    color: var(--primary-green);
}

.subcategory-list {
    list-style: none;
    padding-left: 1rem;
    margin-top: 0.25rem;
}

.subcategory-list li {
    margin-bottom: 0.25rem;
}

.subcategory-list a {
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
}

.subcategory-list a:hover {
    color: var(--primary-green);
}

/* Hero Section */
.hero-section {
    padding: 3rem;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 2rem;
}

.hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.product-card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.out-of-stock {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(0,0,0,0.7);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.product-info {
    padding: 1rem;
}

.product-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.category {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.add-to-cart {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-bottom: 0.5rem;
}

.add-to-cart:hover {
    background-color: var(--dark-green);
}

.add-to-cart.disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.view-details {
    display: block;
    text-align: center;
    color: var(--primary-green);
    text-decoration: none;
    font-size: 0.9rem;
}

/* Admin Dashboard */
.admin-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-nav {
    background-color: var(--white);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.admin-nav a {
    color: var(--dark-gray);
    text-decoration: none;
    padding: 0.5rem 1rem;
    margin-right: 1rem;
    border-radius: 4px;
}

.admin-nav a:hover,
.admin-nav a.active {
    background-color: var(--primary-green);
    color: var(--white);
}

.admin-section {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.btn-primary:hover {
    background-color: var(--dark-green);
}

.btn-secondary {
    background-color: #ccc;
    color: var(--dark-gray);
}

.btn-secondary:hover {
    background-color: #bbb;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th {
    background-color: var(--primary-green);
    color: var(--white);
    padding: 0.75rem;
    text-align: left;
}

.data-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table tr:hover {
    background-color: var(--light-green);
}

.status-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: bold;
}

.status-processing {
    background-color: #FFC107;
    color: #000;
}

.status-shipment {
    background-color: #17A2B8;
    color: var(--white);
}

.status-delivered {
    background-color: var(--primary-green);
    color: var(--white);
}

/* Cart Page */
.cart-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.cart-items {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 2fr 1fr 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 4px;
}

.cart-summary {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.total-row {
    font-weight: bold;
    font-size: 1.3rem;
    border-top: 2px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

/* Checkout Page */
.checkout-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
}

.checkout-form {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
}

.order-summary {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    height: fit-content;
}

/* Login/Register Pages */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    margin-top: auto;
    padding: 3rem 2rem 1rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .home-container {
        grid-template-columns: 1fr;
    }
    
    .checkout-container {
        grid-template-columns: 1fr;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}