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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --radius-lg: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

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

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.125rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
}

/* Navigation */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--white);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
    color: var(--white);
    min-height: 70vh;
    display: flex;
    flex-direction: column;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: 1.5rem;
    font-size: 3rem;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent);
    color: var(--dark);
    padding: 1rem 2.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1.125rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    color: var(--dark);
}

/* Sections */
.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--light);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--gray);
    max-width: 700px;
    margin-bottom: 3rem;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    color: var(--primary);
    margin-bottom: 1rem;
}

.benefit-card h3 {
    color: var(--dark);
}

.benefit-card p {
    color: var(--gray);
    margin-bottom: 0;
}

/* Info Box */
.info-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-top: 3rem;
}

.info-box h3 {
    margin-bottom: 1rem;
}

.info-box p {
    opacity: 0.95;
    margin-bottom: 0;
}

/* Type Cards */
.type-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

.type-content {
    padding: 2rem;
}

.type-card h3 {
    color: var(--primary);
}

.feature-list {
    list-style: none;
    margin: 1rem 0;
    padding-left: 0;
}

.feature-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--gray);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.product-mention {
    background-color: var(--light);
    padding: 1rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    margin-top: 1rem;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 2rem;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-card.featured {
    border: 2px solid var(--primary);
}

.badge {
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.budget {
    background: var(--secondary);
}

.badge.premium {
    background: var(--accent);
    color: var(--dark);
}

.product-card h3 {
    color: var(--dark);
    margin-top: 0.5rem;
}

.price-range {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.product-features {
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
}

.product-features li {
    padding: 0.25rem 0;
    padding-left: 1.25rem;
    position: relative;
    color: var(--gray);
    font-size: 0.9rem;
}

.product-features li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary);
}

.product-description {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.product-link {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    transition: background-color 0.2s ease;
}

.product-link:hover {
    background: var(--primary-dark);
    color: var(--white);
}

/* Comparison Table */
.table-wrapper {
    overflow-x: auto;
    margin-top: 2rem;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--light);
}

.comparison-table th {
    background: var(--dark);
    color: var(--white);
    font-weight: 600;
}

.comparison-table tr:hover {
    background-color: var(--light);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

/* Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tip-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
}

.tip-card h3 {
    color: var(--primary);
    font-size: 1.1rem;
}

.tip-card p {
    color: var(--gray);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-item summary {
    padding: 1.25rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--dark);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: "+";
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    padding: 0 1.25rem 1.25rem;
    color: var(--gray);
    margin-bottom: 0;
}

/* Glossary Grid */
.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.glossary-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.glossary-item h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.glossary-item p {
    color: var(--gray);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: var(--accent);
    margin-bottom: 1rem;
}

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

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s ease;
}

.footer-section ul a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.affiliate-disclosure {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 700px;
    margin: 0 auto 1rem;
}

.copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 1rem 2rem;
        gap: 1rem;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .section {
        padding: 3rem 0;
    }

    .benefits-grid,
    .product-grid,
    .tips-grid,
    .glossary-grid {
        grid-template-columns: 1fr;
    }

    .comparison-table {
        font-size: 0.85rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    .product-card,
    .benefit-card,
    .tip-card {
        padding: 1.5rem;
    }
}

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

.benefit-card,
.type-card,
.product-card,
.tip-card,
.glossary-item {
    animation: fadeIn 0.5s ease forwards;
}