:root {
    /* Colors */
    --primary-dark: #0a192f;
    --primary-light: #112240;
    --accent-blue: #007bff;
    --accent-blue-hover: #0056b3;
    --text-main: #e6f1ff;
    --text-muted: #8892b0;
    --white: #ffffff;
    --success: #64ffda;
    --danger: #ff4444;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0a192f 0%, #112240 100%);
    --gradient-card: linear-gradient(145deg, #112240, #0a192f);
    
    /* Typography */
    --font-main: 'Outfit', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --header-height: 80px;
    
    /* Effects */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

/* Typography Utilities */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(to right, var(--text-main), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

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

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* Header */
#main-header {
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.navbar {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
}

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

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: var(--accent-blue);
}

.cart-btn {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 8px 16px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition);
}

.cart-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--accent-blue);
}

.cart-count {
    background: var(--accent-blue);
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 700;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 123, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(100, 255, 218, 0.05) 0%, transparent 40%);
    z-index: -2;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 123, 255, 0.1);
    color: var(--accent-blue);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(0, 123, 255, 0.2);
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Winners Ticker */
.winners-ticker {
    background: var(--primary-light);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 12px 0;
    overflow: hidden;
}

.ticker-wrap {
    display: flex;
    align-items: center;
    max-width: 100%;
    white-space: nowrap;
}

.ticker-title {
    padding: 0 24px;
    font-weight: 700;
    color: var(--accent-blue);
    z-index: 2;
    background: var(--primary-light);
}

.ticker-move {
    display: inline-block;
    animation: ticker 30s linear infinite;
}

.ticker-item {
    display: inline-block;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.ticker-item strong {
    color: var(--text-main);
}

.ticker-item .time {
    color: var(--accent-blue);
    font-size: 0.8rem;
    margin-left: 4px;
}

@keyframes ticker {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-100%, 0, 0); }
}

/* Categories */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.category-card {
    background: var(--primary-light);
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
}

.category-card:hover {
    transform: translateY(-10px);
    background: var(--gradient-card);
    border-color: var(--accent-blue);
}

.card-icon-wrapper {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: var(--transition);
}

.category-card:hover .card-icon-wrapper {
    background: var(--accent-blue);
    transform: scale(1.1);
}

.category-icon {
    font-size: 2rem;
}

.category-card h3 {
    margin-bottom: 8px;
    font-size: 1.25rem;
}

.category-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* E-books */
.ebooks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 32px;
}

.ebook-card {
    background: var(--primary-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
    display: flex;
    flex-direction: column;
}

.ebook-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 123, 255, 0.3);
}

.ebook-image {
    height: 220px;
    background: linear-gradient(45deg, #1a365d, #0a192f);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.ebook-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ebook-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-blue);
    font-weight: 700;
    margin-bottom: 12px;
}

.ebook-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.ebook-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
    flex: 1;
}

.ebook-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.ebook-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.add-to-cart-btn {
    background: transparent;
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.add-to-cart-btn:hover {
    background: var(--accent-blue);
    color: var(--white);
}

/* About */
.about-wrapper {
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    padding: 60px;
    border: 1px solid rgba(255,255,255,0.05);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 48px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    text-align: left;
}

.benefit-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.benefit-icon {
    font-size: 1.5rem;
    background: rgba(255,255,255,0.05);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.benefit-item p {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* Footer */
.main-footer {
    background: #050d1a;
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-muted);
    margin: 20px 0;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-blue);
    transform: translateY(-3px);
}

.footer-links-col h4,
.footer-contact h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-links-col ul li {
    margin-bottom: 12px;
}

.footer-links-col ul li a {
    color: var(--text-muted);
}

.footer-links-col ul li a:hover {
    color: var(--accent-blue);
    padding-left: 5px;
}

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    gap: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Modal */
.modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal-backdrop.active {
    display: flex;
    opacity: 1;
}

.modal-container {
    background: var(--primary-light);
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.3s;
}

.modal-backdrop.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--white);
}

.modal-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.modal-footer {
    padding: 24px;
    border-top: 1px solid rgba(255,255,255,0.05);
    background: rgba(0,0,0,0.2);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.cart-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.remove-item-btn {
    background: rgba(255, 68, 68, 0.1);
    color: var(--danger);
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.remove-item-btn:hover {
    background: var(--danger);
    color: white;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .about-wrapper {
        padding: 32px;
    }
}