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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.9;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-btn, .cart button {
    background: white;
    color: #667eea;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.auth-btn:hover, .cart button:hover {
    transform: scale(1.05);
}

.language-selector {
    display: flex;
    align-items: center;
}

.language-select {
    background: white;
    color: #667eea;
    border: 2px solid white;
    padding: 0.6rem 1rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    outline: none;
}

.language-select:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.language-select:focus {
    border-color: #764ba2;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

.user-info span {
    font-weight: 500;
}

.logout-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: rgba(255,255,255,0.3);
}

/* Hero Section */
#hero {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.cta-btn {
    background: white;
    color: #f5576c;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 30px;
    cursor: pointer;
    transition: transform 0.3s;
}

.cta-btn:hover {
    transform: scale(1.1);
}

/* Categories Section */
#categories {
    padding: 4rem 0;
    background: white;
}

#categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #667eea;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
}

.category-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-card h3 {
    font-size: 1.2rem;
}

/* Products Section */
#products {
    padding: 4rem 0;
    background: #f8f9fa;
}

#products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #667eea;
}

.search-container {
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

#search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 3px solid #667eea;
    border-radius: 50px;
    outline: none;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
}

#search-input:focus {
    border-color: #764ba2;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #333;
}

.product-price {
    font-size: 1.5rem;
    color: #f5576c;
    font-weight: bold;
    margin-bottom: 1rem;
}

.product-description {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.add-to-cart-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.8rem;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s;
}

.add-to-cart-btn:hover {
    opacity: 0.9;
}

/* About Section */
#about {
    padding: 4rem 0;
    background: white;
}

#about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #667eea;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-content p {
    margin-bottom: 1rem;
}

/* Contact Section */
#contact {
    padding: 4rem 0;
    background: #f8f9fa;
}

#contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #667eea;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.3s, box-shadow 0.3s;
}

.contact-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.contact-item h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-item p {
    margin-bottom: 1rem;
}

.contact-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s, transform 0.2s;
}

.contact-btn:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

footer p {
    margin: 0.5rem 0;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 80%;
    max-width: 600px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.3);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

#cart-items {
    margin: 2rem 0;
    min-height: 200px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

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

.cart-item-name {
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.cart-item-price {
    color: #f5576c;
}

.remove-btn {
    background: #f5576c;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
}

.cart-total {
    margin-top: 2rem;
    text-align: right;
}

.cart-total h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

.checkout-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
}

.checkout-btn:hover {
    opacity: 0.9;
}

/* Checkout Form Styles */
.checkout-form-content {
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
}

.close-checkout {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-checkout:hover {
    color: #000;
}

.checkout-summary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    text-align: center;
}

.checkout-summary h3 {
    margin: 0;
    font-size: 1.5rem;
}

.form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.form-section h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

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

.card-icons {
    margin-top: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.back-to-cart-btn {
    background: #6c757d;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s;
}

.back-to-cart-btn:hover {
    opacity: 0.9;
}

.place-order-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s;
}

.place-order-btn:hover {
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

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

    .form-actions {
        flex-direction: column;
    }

    .checkout-form-content {
        width: 95%;
        margin: 2% auto;
    }

    .header-actions {
        flex-wrap: wrap;
    }
}

/* Authentication Modal Styles */
.auth-modal-content {
    max-width: 450px;
}

.close-auth {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-auth:hover {
    color: #000;
}

#auth-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #eee;
}

.auth-tab {
    flex: 1;
    background: none;
    border: none;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.auth-tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.auth-tab:hover {
    color: #667eea;
}

.auth-form-container h2 {
    text-align: center;
    color: #667eea;
    margin-bottom: 2rem;
}

.auth-submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: opacity 0.3s;
    margin-top: 1rem;
}

.auth-submit-btn:hover {
    opacity: 0.9;
}

.auth-message {
    text-align: center;
    margin-top: 1rem;
    padding: 0.5rem;
    border-radius: 5px;
    font-size: 0.9rem;
}

.auth-message.success {
    background: #d4edda;
    color: #155724;
}

.auth-message.error {
    background: #f8d7da;
    color: #721c24;
}