/* css/style.css */

/* ========== CSS Variables ========== */
:root {
    /* Brand Colors from Logo */
    --primary-dark: #0a1628;
    --primary-blue: #00bfff;
    --primary-light-blue: #4dd4ff;
    --accent-cyan: #00e5ff;
    --white: #ffffff;
    --off-white: #f5f7fa;
    --gray-100: #e8ecf1;
    --gray-200: #c9d1dc;
    --gray-300: #9aa5b5;
    --gray-600: #4a5568;
    --gray-800: #2d3748;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0a1628 0%, #1a3a5c 100%);
    --gradient-blue: linear-gradient(135deg, #00bfff 0%, #00e5ff 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    --shadow-glow: 0 0 20px rgba(0,191,255,0.3);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--off-white);
    min-height: 100vh;
    overflow-x: hidden;
    padding-top: 60px;
    padding-bottom: 70px;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ========== Top Bar ========== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-lg);
}

.menu-btn, .cart-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-xl);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.menu-btn:hover, .cart-btn:hover {
    background: rgba(255,255,255,0.1);
}

.logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.logo-img {
    height: 40px;
    width: auto;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.language-selector select {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    cursor: pointer;
}

.language-selector select option {
    background: var(--primary-dark);
    color: var(--white);
}

.cart-btn {
    position: relative;
}

.cart-count {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--accent-cyan);
    color: var(--primary-dark);
    font-size: 10px;
    font-weight: 600;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== Side Menu ========== */
.side-menu {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    background: var(--gradient-primary);
    z-index: var(--z-modal);
    transition: var(--transition-normal);
    overflow-y: auto;
}

.side-menu.active {
    left: 0;
}

.side-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.side-logo {
    height: 35px;
}

.close-menu {
    color: var(--white);
    font-size: var(--font-size-xl);
    padding: var(--space-sm);
}

.side-menu-list {
    list-style: none;
    padding: var(--space-md);
}

.side-menu-list li {
    margin-bottom: var(--space-xs);
}

.side-menu-list a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    color: var(--gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.side-menu-list a:hover,
.side-menu-list a.active {
    background: rgba(0,191,255,0.1);
    color: var(--primary-blue);
}

.side-menu-list i {
    width: 24px;
    text-align: center;
}

.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    z-index: calc(var(--z-modal) - 1);
    transition: var(--transition-normal);
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========== Main Content ========== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-md);
}

/* ========== Hero Banner ========== */
.hero-section {
    position: relative;
    margin-bottom: var(--space-xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.banner-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    max-height: 400px;
}

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-xl);
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white);
}

.banner-content h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-sm);
}

.banner-content p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.slider-dots {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-sm);
}

.slider-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dot.active {
    background: var(--primary-blue);
    width: 24px;
}

/* ========== Promotions ========== */
.promotions-section {
    margin-bottom: var(--space-xl);
}

.promo-banner {
    background: var(--gradient-blue);
    color: var(--primary-dark);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: 500;
    box-shadow: var(--shadow-glow);
}

/* ========== Search ========== */
.search-section {
    margin-bottom: var(--space-xl);
}

.search-container {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
}

.search-container input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) 48px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    background: var(--white);
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-300);
}

.search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-300);
    padding: var(--space-sm);
    display: none;
}

.search-clear.visible {
    display: block;
}

/* ========== Section Titles ========== */
.section-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-left: var(--space-md);
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-blue);
    border-radius: var(--radius-full);
}

/* ========== Categories ========== */
.categories-section {
    margin-bottom: var(--space-xl);
}

.categories-scroll {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    padding-bottom: var(--space-md);
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.categories-scroll::-webkit-scrollbar {
    display: none;
}

.category-card {
    flex: 0 0 auto;
    width: 100px;
    text-align: center;
    scroll-snap-align: start;
    cursor: pointer;
    transition: var(--transition-fast);
}

.category-card:hover {
    transform: translateY(-4px);
}

.category-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--space-sm);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--primary-blue);
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.category-card:hover .category-icon {
    box-shadow: var(--shadow-glow);
}

.category-card span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-600);
}

/* ========== Products Grid ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-md);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--gray-100);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    background: var(--accent-cyan);
    color: var(--primary-dark);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.product-wishlist {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 32px;
    height: 32px;
    background: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.product-wishlist:hover,
.product-wishlist.active {
    color: var(--error);
}

.product-info {
    padding: var(--space-md);
}

.product-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.price-current {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-blue);
}

.price-original {
    font-size: var(--font-size-sm);
    color: var(--gray-300);
    text-decoration: line-through;
}

.add-to-cart-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: var(--transition-fast);
}

.add-to-cart-btn:hover {
    background: var(--gradient-blue);
    color: var(--primary-dark);
}

/* ========== Loading Spinner ========== */
.loading-spinner {
    display: flex;
    justify-content: center;
    padding: var(--space-2xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-blue);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== Bottom Navigation ========== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: var(--white);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
    z-index: var(--z-sticky);
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-sm);
    color: var(--gray-300);
    font-size: var(--font-size-xs);
    transition: var(--transition-fast);
    position: relative;
}

.nav-item i {
    font-size: var(--font-size-xl);
}

.nav-item.active,
.nav-item:hover {
    color: var(--primary-blue);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--gradient-blue);
    border-radius: var(--radius-full);
}

.cart-nav {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: 0;
    right: 50%;
    transform: translateX(100%);
    background: var(--error);
    color: var(--white);
    font-size: 10px;
    font-weight: 600;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== Modal ========== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 36px;
    height: 36px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    z-index: 1;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-200);
}

.modal-body {
    padding: var(--space-xl);
}

.modal-product-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

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

.modal-product-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--space-sm);
}

.modal-product-price {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--space-md);
}

.modal-product-description {
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.quantity-selector label {
    font-weight: 500;
    color: var(--gray-600);
}

.quantity-controls {
    display: flex;
    align-items: center;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.quantity-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.quantity-btn:hover {
    background: var(--gray-200);
}

.quantity-input {
    width: 60px;
    height: 40px;
    text-align: center;
    border: none;
    font-size: var(--font-size-base);
    font-weight: 500;
}

.quantity-input:focus {
    outline: none;
}

.modal-add-btn {
    width: 100%;
    padding: var(--space-md);
    background: var(--gradient-blue);
    color: var(--primary-dark);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: var(--transition-fast);
}

.modal-add-btn:hover {
    box-shadow: var(--shadow-glow);
}

/* ========== Toast ========== */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary-dark);
    color: var(--white);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-toast);
    opacity: 0;
    transition: var(--transition-normal);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success .toast-icon::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--success);
}

.toast.error .toast-icon::before {
    content: '\f00d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--error);
}

/* ========== Responsive ========== */
@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .category-card {
        width: 120px;
    }
}

@media (min-width: 768px) {
    .main-content {
        padding: var(--space-xl);
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: var(--space-lg);
    }
    
    .banner-content h2 {
        font-size: var(--font-size-3xl);
    }
}

@media (min-width: 1024px) {
    body {
        padding-bottom: 0;
    }
    
    .bottom-nav {
        display: none;
    }
    
    .side-menu {
        position: fixed;
        left: 0;
        width: 240px;
        transform: none;
    }
    
    .main-content {
        margin-left: 240px;
    }
    
    .top-bar {
        left: 240px;
    }
    
    .menu-btn {
        display: none;
    }
    
    .logo {
        position: static;
        transform: none;
    }
}

@media (min-width: 1280px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}