/* ============================================ */
/* TECH BLUE ECOMMERCE THEME                  */
/* Modern Electronics Store                   */
/* ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    /* Tech Blue Palette */
    --primary-color: #2563eb;          /* Tech Blue */
    --primary-dark: #1e40af;           /* Deep Blue */
    --primary-light: #3b82f6;          /* Bright Blue */
    --secondary-color: #1e293b;        /* Dark Navy */
    --accent-color: #60a5fa;           /* Light Blue */
    --accent-secondary: #f59e0b;       /* Amber */
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-accent: rgba(37, 99, 235, 0.05);
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-accent: var(--primary-color);
    
    /* Border & Effects */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 2px 4px rgba(37, 99, 235, 0.08);
    --shadow-md: 0 4px 12px rgba(37, 99, 235, 0.12);
    --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.16);
    --shadow-xl: 0 12px 32px rgba(37, 99, 235, 0.2);
    
    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), #334155);
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--primary-light));
    --gradient-hero: linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(96, 165, 250, 0.88));
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.5s ease;
}

/* ============================================ */
/* GLOBAL BASE STYLES                          */
/* ============================================ */

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

body {
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    line-height: 1.6;
    font-size: 16px;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================ */
/* TYPOGRAPHY                                  */
/* ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2.5rem; font-weight: 600; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.1rem; }

.section-title {
    color: var(--primary-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-align: center;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

/* ============================================ */
/* BUTTONS & INTERACTIVE ELEMENTS             */
/* ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    text-transform: none;
    letter-spacing: normal;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-large {
    padding: 1.125rem 2.25rem;
    font-size: 1.0625rem;
}

.btn-small {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

.btn-add-to-cart {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-base);
    width: 100%;
    font-size: 0.9375rem;
}

.btn-add-to-cart:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-buy-now {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-base);
    width: 100%;
}

.btn-buy-now:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================ */
/* HEADER - ECOMMERCE                         */
/* ============================================ */

.header-ecommerce {
    background: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-base);
}

.header-ecommerce.sticky {
    box-shadow: var(--shadow-md);
}

.header-topbar {
    background: var(--bg-secondary);
    padding: 0.5rem 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

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

.topbar-left,
.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.topbar-phone,
.topbar-email {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    font-size: 0.8125rem;
}

.topbar-phone:hover,
.topbar-email:hover {
    color: var(--primary-color);
}

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

.social-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.header-main {
    padding: 1rem 0;
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.site-logo img {
    max-height: 50px;
    width: auto;
}

.site-logo .logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.main-nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
    position: relative;
    font-family: var(--font-body);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.main-nav a:hover {
    color: var(--primary-color);
}

.main-nav a:hover::after {
    width: 100%;
}

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

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box input {
    padding: 0.625rem 1rem 0.625rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    width: 250px;
    transition: var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-box i {
    position: absolute;
    left: 0.875rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.icon-link {
    position: relative;
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
}

.icon-link:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* ============================================ */
/* HERO ECOMMERCE                              */
/* ============================================ */

.hero-ecommerce {
    background: var(--gradient-hero);
    min-height: 600px;
    display: flex;
    align-items: center;
    color: white;
    position: relative;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 4rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    font-family: var(--font-heading);
}

.hero-tagline {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.95;
    font-weight: 400;
}

.hero-description {
    font-size: 1.125rem;
    margin: 0 auto 2.5rem;
    opacity: 0.9;
    max-width: 600px;
}

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

/* ============================================ */
/* PRODUCT GRID & CARDS                        */
/* ============================================ */

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.product-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.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: 12px;
    left: 12px;
    background: var(--gradient-primary);
    color: white;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.product-badge.sale {
    background: var(--gradient-secondary);
}

.product-badge.new {
    background: var(--gradient-primary);
}

.product-badge.featured {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.product-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition-base);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.action-btn {
    width: 36px;
    height: 36px;
    background: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.product-content {
    padding: 1.5rem;
}

.product-category {
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    display: block;
}

.product-title {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
    line-height: 1.4;
}

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

.product-title a:hover {
    color: var(--primary-color);
}

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

.stars {
    color: #fbbf24;
    display: flex;
    gap: 0.125rem;
}

.rating-count {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.product-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

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

.price-discount {
    background: #dc2626;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.stock-status {
    font-size: 0.875rem;
    font-weight: 500;
}

.stock-status.in-stock {
    color: #059669;
}

.stock-status.low-stock {
    color: #d97706;
}

.stock-status.out-of-stock {
    color: #dc2626;
}

/* ============================================ */
/* FEATURED CATEGORIES                         */
/* ============================================ */

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.category-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    position: relative;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.category-image {
    height: 200px;
    overflow: hidden;
    background: var(--bg-secondary);
}

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

.category-card:hover .category-image img {
    transform: scale(1.1);
}

.category-content {
    padding: 1.5rem;
    text-align: center;
}

.category-title {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.category-count {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================ */
/* SPECIAL OFFERS BANNER                       */
/* ============================================ */

.offers-banner {
    background: var(--gradient-primary);
    padding: 1.5rem 0;
    text-align: center;
    color: white;
    margin: 3rem 0;
}

.offers-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.offers-text {
    font-size: 1.25rem;
    font-weight: 600;
}

.offers-timer {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.timer-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

/* ============================================ */
/* NEWSLETTER SECTION                          */
/* ============================================ */

.newsletter-section {
    background: var(--bg-secondary);
    padding: 4rem 0;
    margin: 4rem 0 0;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-title {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.newsletter-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ============================================ */
/* FOOTER ECOMMERCE                            */
/* ============================================ */

.footer-ecommerce {
    background: var(--secondary-color);
    color: white;
    margin-top: 0;
}

.footer-main {
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-col h4 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    font-family: var(--font-heading);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: #cbd5e1;
    font-size: 0.9375rem;
}

.footer-contact i {
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    text-decoration: none;
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    color: #94a3b8;
    margin: 0;
    font-size: 0.875rem;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.footer-bottom-links a:hover {
    color: white;
}

/* ============================================ */
/* FLOATING & UTILITY BUTTONS                  */
/* ============================================ */

.floating-cart-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    z-index: 999;
    transition: var(--transition-base);
    font-size: 0.875rem;
}

.floating-cart-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ============================================ */
/* RESPONSIVE DESIGN                           */
/* ============================================ */

@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .search-box input {
        width: 200px;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .section-title { font-size: 2rem; }
    .hero-title { font-size: 2.5rem; }
    
    .header-topbar {
        font-size: 0.75rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .floating-cart-btn {
        bottom: 1rem;
        right: 1rem;
        padding: 0.875rem 1.25rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-tagline { font-size: 1.25rem; }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================ */
/* UTILITY CLASSES                             */
/* ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: white; }

.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-accent { background: var(--bg-accent); }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.flex-1 { flex: 1; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }

.w-full { width: 100%; }
.h-full { height: 100%; }
.w-auto { width: auto; }
.h-auto { height: auto; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ============================================ */
/* LOADING & ANIMATIONS                        */
/* ============================================ */

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* ============================================ */
/* CUSTOM SCROLLBAR                            */
/* ============================================ */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}