/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --primary: #6c5ce7;
    --primary-dark: #5b4cdb;
    --primary-light: #a29bfe;
    --secondary: #00cec9;
    --accent: #fd79a8;
    --warning: #fdcb6e;
    --success: #00b894;
    --danger: #d63031;

    --dark: #2d3436;
    --gray-900: #2d3436;
    --gray-800: #636e72;
    --gray-700: #b2bec3;
    --gray-600: #dfe6e9;
    --gray-500: #f5f6fa;
    --white: #ffffff;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

/* ========================================
   Top Banner
   ======================================== */
.top-banner {
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    color: var(--white);
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
}

.top-banner strong {
    background: var(--warning);
    color: var(--dark);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    margin-left: 0.5rem;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.logo-icon {
    font-size: 1.8rem;
}

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

.nav-links a {
    font-weight: 500;
    color: var(--gray-800);
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

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

.icon-btn {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    position: relative;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--gray-500);
}

.cart-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero-carousel {
    position: relative;
    min-height: 500px;
}

.hero-slide {
    display: none;
    align-items: center;
    gap: 4rem;
    padding: 2rem;
    animation: fadeIn 0.6s ease;
}

.hero-slide.active {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-800);
    margin-bottom: 2rem;
}

.hero-subtitle strong {
    color: var(--primary);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.hero-img-placeholder {
    width: 400px;
    height: 400px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    box-shadow: var(--shadow-xl);
}

.hero-img-placeholder.summer {
    background: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
}

.hero-img-placeholder.arrivals {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.hero-img-placeholder.tech {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

/* Carousel Controls */
.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.carousel-btn {
    background: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-700);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    width: 30px;
    border-radius: 6px;
}

/* ========================================
   Features Bar
   ======================================== */
.features {
    background: var(--white);
    padding: 2rem 0;
    border-bottom: 1px solid var(--gray-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
}

.feature-icon {
    font-size: 2.5rem;
}

.feature-text h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.feature-text p {
    font-size: 0.85rem;
    color: var(--gray-800);
}

/* ========================================
   Section Header
   ======================================== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
}

.view-all {
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
}

.view-all:hover {
    color: var(--primary-dark);
}

/* ========================================
   Categories
   ======================================== */
.categories {
    background: var(--gray-500);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.category-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    text-align: center;
    padding: 2rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.category-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.category-img.electronics {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.category-img.fashion {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.category-img.home {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.category-img.beauty {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.category-img.sports {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.category-img.books {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

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

.category-info p {
    color: var(--gray-800);
    font-size: 0.9rem;
}

/* ========================================
   Products
   ======================================== */
.product-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab {
    background: none;
    border: 2px solid var(--gray-600);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.tab:hover,
.tab.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 2;
}

.badge-sale {
    background: var(--danger);
    color: var(--white);
}

.badge-new {
    background: var(--success);
    color: var(--white);
}

.badge-hot {
    background: var(--warning);
    color: var(--dark);
}

.product-wishlist {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    font-size: 1.1rem;
}

.product-wishlist:hover {
    background: var(--accent);
    color: var(--white);
}

.product-img {
    padding: 2rem;
}

.product-img-placeholder {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.product-info {
    padding: 0 1.5rem 1.5rem;
}

.product-category {
    font-size: 0.8rem;
    color: var(--gray-800);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.stars {
    color: var(--warning);
}

.review-count {
    font-size: 0.85rem;
    color: var(--gray-800);
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.price-current {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.price-original {
    font-size: 1rem;
    color: var(--gray-700);
    text-decoration: line-through;
}

.btn-add-cart {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-add-cart:hover {
    background: var(--primary-dark);
    transform: scale(1.02);
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* ========================================
   Deal Section
   ======================================== */
.deal-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 4rem 0;
}

.deal-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.deal-badge {
    display: inline-block;
    background: var(--warning);
    color: var(--dark);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.deal-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.deal-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.deal-timer {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.timer-unit {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    text-align: center;
    backdrop-filter: blur(10px);
}

.timer-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
}

.timer-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
}

.timer-separator {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
}

.deal-price {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.deal-current {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
}

.deal-original {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: line-through;
}

.deal-section .btn-primary {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.deal-section .btn-primary:hover {
    background: var(--gray-500);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.deal-img-placeholder {
    width: 350px;
    height: 350px;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   Testimonials
   ======================================== */
.testimonials {
    background: var(--gray-500);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-rating {
    color: var(--warning);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1rem;
    color: var(--gray-800);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 1rem;
}

.author-info span {
    font-size: 0.85rem;
    color: var(--success);
}

/* ========================================
   Newsletter
   ======================================== */
.newsletter {
    background: var(--white);
}

.newsletter-content {
    max-width: 650px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.newsletter-text {
    color: var(--gray-800);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.newsletter-input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--gray-600);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary);
}

.newsletter-privacy {
    font-size: 0.85rem;
    color: var(--gray-700);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-about {
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-col h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: var(--gray-700);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--white);
}

.contact-info li {
    color: var(--gray-700);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: var(--gray-700);
}

.payment-methods {
    display: flex;
    gap: 1rem;
    align-items: center;
    color: var(--gray-700);
    font-size: 0.9rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-slide.active {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-img-placeholder {
        width: 300px;
        height: 300px;
        font-size: 6rem;
    }

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

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

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

    .deal-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .deal-title {
        font-size: 2rem;
    }

    .deal-timer {
        justify-content: center;
    }

    .deal-price {
        justify-content: center;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

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

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .deal-img-placeholder {
        width: 250px;
        height: 250px;
        font-size: 7rem;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.product-badge {
    animation: pulse 2s infinite;
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}