:root {
    --primary-color: #1a1a1a;
    --secondary-color: #4a4a4a;
    --accent-color: #0066cc;
    --background-color: #ffffff;
    --text-color: #333333;
    --border-color: #e1e1e1;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    padding: 1rem 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 600;
    font-size: 1.2rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6rem 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    padding-right: 2rem;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

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

.book-preview {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-preview img {
    max-width: 100%;
    height: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.book-preview img[src*="book-cover.jpg"] {
    width: 320px;
    aspect-ratio: 1461 / 2000;
    object-fit: fill;
}

/* Buttons */
.cta-buttons {
    display: flex;
    gap: 1rem;
}

button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pre-order-main, .pre-order-nav {
    background-color: var(--accent-color);
    color: white;
}

.learn-more {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature {
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.feature h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Video Section */
.video-section {
    padding: 4rem 2rem;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Newsletter Section */
.newsletter {
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

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

.signup-form {
    width: 100%;
    height: 600px;
    border: none;
    margin-top: 2rem;
    background-color: white;
    border-radius: 8px;
}

/* Footer */
footer {
    padding: 2rem;
    background-color: var(--primary-color);
    color: white;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.footer-links a {
    color: white;
    text-decoration: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    max-width: 500px;
    margin: 15vh auto;
    position: relative;
}

.close-modal {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
}

.retailer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.retailer-button {
    padding: 1rem;
    text-align: center;
    background-color: #f8f9fa;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* Animations */
.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.reveal-text {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

.reveal-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 8rem;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}