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

body {
    font-family: Arial, sans-serif;
    background: #fff;
    color: #333;
}

a {
    text-decoration: none;
    color: inherit;
}

ul { list-style: none; }

img { max-width: 100%; }

button { cursor: pointer; }

.header {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
    padding: 15px 20px;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.nav ul {
    display: flex;
    gap: 20px;
}

.nav a { color: #555; }
.nav a:hover, .nav a.active { color: #2196F3; }

.user-area {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}
.user-area a { color: #2196F3; }
.user-area a:hover { color: #1976D2; }

.cart-container { position: relative; }

.cart-btn {
    background: none;
    border: none;
    font-size: 18px;
    padding: 5px 10px;
}

.cart-count {
    background: #e53935;
    color: white;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 10px;
}

.cart-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    width: 300px;
    background: white;
    border: 1px solid #ddd;
    padding: 15px;
    z-index: 100;
}

.cart-container:hover .cart-dropdown { display: block; }

.cart-dropdown h3 {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.cart-items li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.cart-items img {
    width: 50px;
    height: 50px;
    object-fit: cover;
}

.item-info { flex: 1; }
.item-info span { display: block; }

.item-info .price {
    color: #4CAF50;
    font-size: 14px;
}

.cart-items input {
    width: 50px;
    padding: 5px;
    text-align: center;
}

.remove-btn {
    background: none;
    border: none;
    color: #e53935;
    font-size: 16px;
    padding: 5px;
    cursor: pointer;
}
.remove-btn:hover { color: #b71c1c; }

.cart-total {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-weight: bold;
}

.checkout-btn {
    width: 100%;
    padding: 10px;
    background: #2196F3;
    color: white;
    border: none;
    margin-top: 10px;
}
.checkout-btn:hover { background: #1976D2; }

.hero {
    background: #e3f2fd;
    padding: 50px 20px;
    text-align: center;
}
.hero h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.breadcrumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    font-size: 14px;
}
.breadcrumb a { color: #2196F3; }
.breadcrumb span { color: #666; }

.categories, .products {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.categories h2, .products h2 {
    text-align: center;
    margin-bottom: 20px;
}

.category-grid {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.category-card {
    flex: 1;
    min-width: 200px;
    border: 1px solid #ddd;
    text-align: center;
}
.category-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}
.category-card span {
    display: block;
    padding: 10px;
    background: #333;
    color: white;
}

.product-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.product-card {
    flex: 1 1 calc(33.33% - 20px);
    min-width: 250px;
    border: 1px solid #ddd;
    padding: 0;
    background: white;
}
.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.product-card h3 {
    padding: 10px;
    font-size: 16px;
}
.product-card .price {
    display: block;
    padding: 0 10px;
    color: #4CAF50;
    font-weight: bold;
}

.add-btn {
    display: block;
    width: calc(100% - 20px);
    margin: 10px;
    padding: 10px;
    background: #2196F3;
    color: white;
    border: none;
}
.add-btn:hover { background: #1976D2; }

.product-detail {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.product-image {
    flex: 1;
    min-width: 300px;
}
.product-image img {
    width: 100%;
    border: 1px solid #ddd;
}

.product-info {
    flex: 1;
    min-width: 300px;
}
.product-info h1 {
    font-size: 28px;
    margin-bottom: 10px;
}
.product-info .price {
    font-size: 24px;
    color: #4CAF50;
    font-weight: bold;
    display: block;
    margin-bottom: 15px;
}
.product-info .description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}
.product-info .add-btn {
    width: auto;
    margin: 0;
    padding: 12px 30px;
}

.product-specs {
    margin-top: 20px;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}
.product-specs table { width: 100%; }
.product-specs td {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}
.product-specs td:first-child {
    color: #666;
    width: 100px;
}

.category-header {
    background: #e3f2fd;
    padding: 30px 20px;
    text-align: center;
}
.category-header h1 { font-size: 28px; }

footer {
    background: #333;
    color: #fff;
    margin-top: 40px;
    padding: 30px 20px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-section {
    flex: 1;
    min-width: 150px;
}
.footer-section h4 { margin-bottom: 15px; }
.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.footer-section a { color: #aaa; }
.footer-section a:hover { color: #fff; }
.footer-section p {
    color: #aaa;
    font-size: 14px;
}

.admin-container { max-width: 900px; margin: 20px auto; padding: 0 20px; }
.admin-section { border: 1px solid #ddd; padding: 20px; margin-bottom: 20px; background: #fff; }
.admin-section h2 { margin-bottom: 15px; }
.form-group { margin-bottom: 10px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; font-size: 14px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 8px; border: 1px solid #ddd; font-family: inherit;
}
.form-group textarea { height: 80px; resize: vertical; }
.submit-btn { padding: 10px 20px; background: #2196F3; color: white; border: none; cursor: pointer; }
.submit-btn:hover { background: #1976D2; }
.delete-btn { padding: 5px 10px; background: #e53935; color: white; border: none; cursor: pointer; }
.delete-btn:hover { background: #b71c1c; }
.edit-btn { padding: 5px 10px; background: #FF9800; color: white; border: none; cursor: pointer; }
.edit-btn:hover { background: #F57C00; }
.item-list { margin-top: 15px; }
.item-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid #eee; }
.item-row span { flex: 1; }
.item-row .btns { display: flex; gap: 5px; }
.msg { padding: 10px; margin-bottom: 10px; display: none; }

.auth-container {
    max-width: 420px;
    margin: 60px auto;
    padding: 0 20px;
}
.auth-box {
    border: 1px solid #ddd;
    padding: 30px;
    background: #fff;
}
.auth-box h1 {
    margin-bottom: 20px;
    text-align: center;
}
.auth-msg {
    padding: 10px;
    margin-bottom: 10px;
    background: #ffebee;
    color: #c62828;
    display: none;
}
.auth-link {
    margin-top: 15px;
    text-align: center;
    font-size: 14px;
    color: #666;
}
.auth-link a { color: #2196F3; }

.back-link { color: #2196F3; }
.back-link:hover { color: #1976D2; }

@media (max-width: 768px) {
    .nav { display: none; }
    .product-card { flex: 1 1 100%; }
    .product-detail { flex-direction: column; }
}