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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-dark: #1f2937;
    --text-medium: #4b5563;
    --text-light: #6b7280;
    --bg-white: #ffffff;
    --bg-light: #f3f4f6;
    --bg-lighter: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
}

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

.nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-medium);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    padding: 8px 0;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-lighter) 0%, var(--bg-light) 100%);
    padding: 80px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    text-align: left;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-medium);
    line-height: 1.6;
}

.hero-image img {
    width: 100%;
    height: auto;
    max-width: 600px;
}

/* Sections */
section {
    padding: 60px 0;
}

section h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
    text-align: center;
}

.intro-section {
    background-color: var(--bg-white);
}

.intro-section p {
    font-size: 18px;
    color: var(--text-medium);
    max-width: 900px;
    margin: 0 auto 20px;
    text-align: center;
    line-height: 1.8;
}

/* Featured Lists */
.featured-lists {
    background-color: var(--bg-lighter);
}

.section-disclaimer {
    font-size: 14px;
    color: var(--text-light);
    max-width: 900px;
    margin: 16px auto 32px;
    text-align: center;
    font-style: italic;
    line-height: 1.6;
}

.lists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.list-card {
    background-color: var(--bg-white);
    padding: 32px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s;
}

.list-card:hover {
    box-shadow: var(--shadow-md);
}

.card-image {
    width: 100%;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.card-image img {
    width: 100%;
    height: auto;
    max-width: 400px;
    border-radius: 6px;
}

.list-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.list-card > p {
    font-size: 16px;
    color: var(--text-medium);
    margin-bottom: 16px;
    line-height: 1.6;
}

.list-note {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 20px;
    font-style: italic;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.book-list {
    list-style: none;
    padding: 0;
}

.book-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.6;
}

.book-list li:last-child {
    border-bottom: none;
}

.book-list strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* Why Us Section */
.why-us {
    background-color: var(--bg-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.benefit-card {
    text-align: center;
    padding: 24px;
}

.benefit-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.benefit-icon img {
    width: 80px;
    height: 80px;
}

.benefit-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.6;
}

/* Reading Guide Section */
.reading-guide {
    background-color: var(--bg-white);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.guide-card {
    background-color: var(--bg-lighter);
    padding: 28px;
    border-radius: 6px;
    border-left: 4px solid var(--primary-color);
}

.guide-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.guide-card p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.7;
}

/* Literary Insights Section */
.literary-insights {
    background-color: var(--bg-lighter);
}

.insights-content {
    max-width: 900px;
    margin: 0 auto;
    margin-top: 32px;
}

.insights-content > p {
    font-size: 18px;
    color: var(--text-medium);
    margin-bottom: 32px;
    line-height: 1.8;
}

.insight-section {
    background-color: var(--bg-white);
    padding: 24px;
    margin-bottom: 24px;
    border-radius: 6px;
    box-shadow: var(--shadow);
}

.insight-section h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.insight-section p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.8;
}

/* Reader Benefits Section */
.reader-benefits {
    background-color: var(--bg-white);
}

.section-intro {
    font-size: 18px;
    color: var(--text-medium);
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
    line-height: 1.8;
}

.benefits-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 32px;
}

.detailed-benefit {
    background-color: var(--bg-lighter);
    padding: 28px;
    border-radius: 6px;
}

.detailed-benefit h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.detailed-benefit p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.7;
}

/* Reading Community Section */
.reading-community {
    background-color: var(--bg-lighter);
}

.reading-community > .container > p {
    font-size: 18px;
    color: var(--text-medium);
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
    line-height: 1.8;
}

.community-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 32px;
}

.feature-item {
    background-color: var(--bg-white);
    padding: 32px;
    border-radius: 6px;
    box-shadow: var(--shadow);
    text-align: center;
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.feature-item p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.7;
}

/* Intro Section Additional Styles */
.intro-section h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 32px;
    margin-bottom: 16px;
}

/* CTA Section */
.cta-section {
    background-color: var(--bg-light);
    text-align: center;
}

.cta-section p {
    font-size: 18px;
    color: var(--text-medium);
    max-width: 800px;
    margin: 0 auto 20px;
    line-height: 1.8;
}

.cta-section p:last-of-type {
    margin-bottom: 32px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 16px;
    transition: background-color 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

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

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--bg-light);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--bg-white);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--bg-light);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--bg-light);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.contact-info {
    list-style: none;
}

.contact-info li {
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--bg-light);
}

.contact-info strong {
    color: var(--bg-white);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--bg-light);
}

/* Form Styles */
.contact-notice {
    background-color: var(--bg-lighter);
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    margin-bottom: 32px;
    border-radius: 4px;
}

.contact-notice p {
    margin: 0;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-medium);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control::placeholder {
    color: #9ca3af;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

.form-disclaimer {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.form-disclaimer a {
    color: var(--primary-color);
    text-decoration: none;
}

.form-disclaimer a:hover {
    text-decoration: underline;
}

/* Content Pages */
.content-page {
    background-color: var(--bg-lighter);
    padding: 60px 0;
}

.content-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--bg-white);
    padding: 48px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.page-header-image {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.page-header-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 8px;
}

.content-container h1 {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 32px;
}

.content-container h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 32px;
    margin-bottom: 16px;
    text-align: left;
}

.content-container h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-dark);
    margin-top: 24px;
    margin-bottom: 12px;
}

.content-container p {
    font-size: 16px;
    color: var(--text-medium);
    margin-bottom: 16px;
    line-height: 1.8;
}

.content-container ul,
.content-container ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.content-container li {
    font-size: 16px;
    color: var(--text-medium);
    margin-bottom: 8px;
    line-height: 1.7;
}

.content-container strong {
    color: var(--text-dark);
    font-weight: 600;
}

.last-updated {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px;
    font-style: italic;
}

/* FAQ Styles */
.faq-item {
    background-color: var(--bg-lighter);
    padding: 20px;
    margin-bottom: 16px;
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.faq-item p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Contact Info Boxes */
.info-box {
    background-color: var(--bg-lighter);
    padding: 24px;
    border-radius: 6px;
    margin-bottom: 32px;
}

.info-box h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.info-box p {
    font-size: 16px;
    color: var(--text-medium);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        box-shadow: var(--shadow-md);
        padding: 20px;
        gap: 16px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-text {
        text-align: center;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    section h2 {
        font-size: 28px;
    }
    
    .content-container {
        padding: 24px;
    }
    
    .content-container h1 {
        font-size: 32px;
    }
    
    .lists-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    section {
        padding: 40px 0;
    }
    
    .list-card,
    .benefit-card {
        padding: 20px;
    }
}