/**
 * Sheetaroo - Main Stylesheet
 * Pixel-perfect clone of theworksheetstore.com
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Colors */
    --color-primary: #000000;
    --color-secondary: #ffffff;
    --color-accent-yellow: #FFD700;
    --color-accent-blue: #4169E1;
    --color-accent-green: #32CD32;
    --color-accent-red: #FF6347;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --color-bg-light: #f9f9f9;
    --color-success: #28a745;
    --color-error: #dc3545;

    /* Typography */
    --font-primary: 'Assistant', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-h1: 48px;
    --font-size-h2: 36px;
    --font-size-h3: 24px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;

    /* Layout */
    --container-max-width: 1200px;
    --header-height: 70px;
    --announcement-bar-height: 40px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-secondary);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    border: 1px solid var(--color-border);
    padding: 12px 16px;
    border-radius: 4px;
    width: 100%;
    transition: var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-h2);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: 4px;
    transition: var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #333;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-block {
    width: 100%;
    display: block;
}

/* ============================================
   ANNOUNCEMENT BAR
   ============================================ */
.announcement-bar {
    background-color: var(--color-primary);
    color: var(--color-secondary);
    text-align: center;
    padding: 10px 0;
    font-size: var(--font-size-small);
    font-weight: 500;
}

.announcement-bar p {
    margin: 0;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    background-color: var(--color-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-md);
}

.nav-left,
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.nav-right {
    justify-content: flex-end;
}

.logo {
    flex: 1;
}

.logo a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

#site-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    display: none;
    /* Hidden by default until loaded */
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
    margin: 0;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    padding: 8px 12px;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-light);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--color-text);
    transition: var(--transition-fast);
    position: relative;
}

.icon-btn:hover {
    background-color: var(--color-bg-light);
    color: var(--color-primary);
}

.cart-btn {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--color-primary);
    color: var(--color-secondary);
    font-size: 11px;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    color: var(--color-text);
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-secondary);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transition: var(--transition-normal);
    padding: var(--spacing-md);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    font-size: 24px;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-sm);
    font-size: var(--font-size-large);
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-light);
}

/* ============================================
   HERO SLIDER
   ============================================ */
.hero-slider {
    position: relative;
    height: 500px;
    width: 100%;
    overflow: hidden;
    background-color: #f5f5f5;
}

.slider-wrapper {
    position: relative;
    height: 100%;
    width: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 2;
    pointer-events: none;
}

.slider-btn {
    background-color: rgba(255, 255, 255, 0.5);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    color: #333;
    pointer-events: auto;
    transition: background-color 0.3s;
}

.slider-btn:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s;
}

.dot.active {
    background-color: var(--color-primary);
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .hero-slider {
        height: 300px;
    }
}

/* ============================================
   SHOP BY GRADE
   ============================================ */
.shop-by-grade {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-secondary);
}

.grade-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 992px) {
    .grade-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .grade-grid {
        grid-template-columns: 1fr;
    }
}

.grade-card {
    text-align: center;
    transition: var(--transition-normal);
    cursor: pointer;
}

.grade-card:hover {
    transform: translateY(-8px);
}

.grade-icon {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: 700;
    color: var(--color-secondary);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    overflow: hidden;
    /* Ensure image stays in circle */
    background-color: #f0f0f0;
}

.grade-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.grade-card:hover .grade-icon {
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.grade-name {
    font-size: var(--font-size-h3);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.grade-age {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
}

.grade-view-btn {
    margin-top: var(--spacing-sm);
    padding: 8px 24px;
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition-fast);
}

.grade-view-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-secondary);
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.featured-products {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background-color: var(--color-secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    cursor: pointer;
}

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

.product-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background-color: var(--color-bg-light);
    position: relative;
    background-size: cover;
    /* CHANGED: Added for div background images */
    background-position: center;
    /* CHANGED: Added for centering */
    background-repeat: no-repeat;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--color-error);
    color: var(--color-secondary);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: var(--font-size-small);
    font-weight: 700;
}

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

.product-category {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-name {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

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

.price-sale {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
}

.price-original {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    text-decoration: line-through;
}

.product-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-add-cart {
    flex: 1;
    padding: 12px;
    background-color: var(--color-primary);
    color: var(--color-secondary);
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-add-cart:hover {
    background-color: #333;
}

/* ============================================
   WORKSHEETS INFO
   ============================================ */
.worksheets-info {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-secondary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.info-item {
    text-align: center;
    padding: var(--spacing-md);
}

.info-item i {
    font-size: 48px;
    color: var(--color-accent-blue);
    margin-bottom: var(--spacing-md);
}

.info-item h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.info-item p {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-secondary);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-brand h3 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-small);
}

/* ============================================
   CART DRAWER
   ============================================ */
.cart-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 3000;
    pointer-events: none;
}

.cart-drawer.active {
    pointer-events: all;
}

.cart-drawer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: var(--transition-normal);
}

.cart-drawer.active .cart-drawer-overlay {
    opacity: 1;
}

.cart-drawer-content {
    position: absolute;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 420px;
    height: 100%;
    background-color: var(--color-secondary);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
}

.cart-drawer.active .cart-drawer-content {
    right: 0;
}

.cart-drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.cart-drawer-header h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
}

.cart-drawer-close {
    font-size: 24px;
    color: var(--color-text);
}

.cart-drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.cart-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    background-color: var(--color-bg-light);
}

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

.cart-item-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.cart-item-price {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.qty-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition-fast);
}

.qty-btn:hover {
    background-color: var(--color-bg-light);
}

.qty-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    min-width: 30px;
    text-align: center;
}

.cart-item-remove {
    color: var(--color-error);
    font-size: var(--font-size-small);
    margin-top: var(--spacing-xs);
    cursor: pointer;
}

.cart-empty {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--color-text-light);
}

.cart-empty i {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.cart-drawer-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-large);
    font-weight: 700;
}

.cart-total-amount {
    color: var(--color-primary);
}

/* ============================================
   WHATSAPP FLOAT BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: var(--color-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {

    .nav-left,
    .logo h1 {
        display: none;
    }

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

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .grade-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .grade-icon {
        width: 120px;
        height: 120px;
        font-size: 36px;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .grade-grid {
        grid-template-columns: 1fr;
    }

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