/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Sora', sans-serif;
    line-height: 1.6;
    color: #1a2b3c;
    background:
        radial-gradient(ellipse 80% 40% at 10% 0%, rgba(44, 167, 224, 0.12), transparent 50%),
        #f4f8fb;
}

.demo-back {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 5000;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    color: #fff;
    background: rgba(6, 21, 38, 0.88);
    border: 1px solid rgba(94, 200, 245, 0.35);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(10, 35, 66, 0.08);
    box-shadow: 0 8px 28px rgba(10, 35, 66, 0.06);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: #0a2342;
    letter-spacing: -0.02em;
}

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

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

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #2ca7e0;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: #2ca7e0;
}

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

.search-box {
    display: flex;
    align-items: center;
    background: #f3f4f6;
    border-radius: 25px;
    padding: 0.5rem 1rem;
    min-width: 250px;
}

.search-box input {
    border: none;
    background: none;
    outline: none;
    flex: 1;
    padding: 0.5rem;
}

.search-btn {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
}

.cart-icon,
.user-icon {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.cart-icon:hover,
.user-icon:hover {
    background-color: #f3f4f6;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 4.5rem 1.5rem;
    background:
        radial-gradient(ellipse 70% 60% at 80% 20%, rgba(94, 200, 245, 0.28), transparent 55%),
        linear-gradient(145deg, #061526 0%, #0a2342 45%, #12375a 100%);
    color: white;
    display: flex;
    align-items: center;
    min-height: 78vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    margin-right: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-btn {
    background: linear-gradient(120deg, #2ca7e0, #0a2342);
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 12px 28px rgba(44, 167, 224, 0.35);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.product-showcase {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.product-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    min-width: 150px;
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card.featured {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.product-image {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.price {
    font-size: 1.2rem;
    font-weight: 600;
    color: #5ec8f5;
}

/* Products Section */
.products-section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1f2937;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: #f3f4f6;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: #0a2342;
    color: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-item {
    background: white;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(10, 35, 66, 0.08);
    box-shadow: 0 10px 28px rgba(10, 35, 66, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(44, 167, 224, 0.18);
    border-color: rgba(44, 167, 224, 0.35);
}

.product-image {
    height: 200px;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #666;
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

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

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #10b981;
    margin-bottom: 1rem;
}

.add-to-cart {
    width: 100%;
    background: #2ca7e0;
    color: white;
    border: none;
    padding: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.add-to-cart:hover {
    background: #1d4ed8;
}

/* Cart Sidebar */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 2000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.cart-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close-cart {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

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

.cart-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.cart-item-image {
    width: 60px;
    height: 60px;
    background: #f8f9fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #666;
}

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

.cart-item-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.cart-item-price {
    color: #10b981;
    font-weight: 600;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quantity-btn {
    background: #f3f4f6;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quantity-btn:hover {
    background: #e5e7eb;
}

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

.remove-item {
    background: #ef4444;
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid #e5e7eb;
}

.cart-total {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
}

.checkout-btn {
    width: 100%;
    background: #10b981;
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.checkout-btn:hover {
    background: #059669;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 3000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.modal-body {
    padding: 1.5rem;
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #374151;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.8rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #2ca7e0;
}

.submit-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.submit-btn:hover {
    background: #059669;
}

/* User Menu */
.user-menu {
    position: fixed;
    top: 80px;
    right: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    min-width: 200px;
    display: none;
    z-index: 1500;
}

.user-menu.active {
    display: block;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.user-menu-item:hover {
    background-color: #f3f4f6;
}

.user-menu-item i {
    width: 20px;
    color: #666;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #10b981;
}

.footer-section p {
    margin-bottom: 1rem;
    color: #d1d5db;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #10b981;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #374151;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #10b981;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .nav {
        display: none;
    }
    
    .search-box {
        min-width: 200px;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .product-showcase {
        margin-top: 2rem;
    }
    
    .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-showcase {
        flex-direction: column;
        align-items: center;
    }
}