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

:root {
    --bg-primary: #0D0D0D;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #222;
    --text-primary: #FFFFFF;
    --text-secondary: #8E8E93;
    --text-tertiary: #666;
    --accent-blue: #007AFF;
    --accent-purple: #8B5CF6;
    --border-color: #222;
    --gradient-start: #007AFF;
    --gradient-end: #8B5CF6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    color: var(--accent-purple);
    text-decoration: underline;
}

/* Navigation */
nav {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(13, 13, 13, 0.9);
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover {
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Main Content */
main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    width: 100%;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0 5rem;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.3);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 122, 255, 0.4);
    text-decoration: none;
    color: var(--text-primary);
}

.download-btn.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

.app-store-note {
    margin-top: 1rem;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* Sections */
section {
    margin-bottom: 5rem;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* Features Grid */
.features {
    margin-top: 4rem;
}

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

.feature {
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature:hover {
    transform: translateY(-4px);
    border-color: var(--accent-blue);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature h3 {
    margin-bottom: 0.75rem;
}

.feature p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* Examples */
.examples {
    margin-top: 4rem;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.example-card {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border-left: 4px solid var(--accent-blue);
    transition: transform 0.2s ease;
}

.example-card:hover {
    transform: translateX(4px);
}

.example-card p {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

/* Pricing */
.pricing {
    margin-top: 4rem;
    padding: 3rem 2rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 16px;
    border: 2px solid var(--border-color);
    position: relative;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.premium {
    border-color: var(--accent-blue);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-primary);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    text-align: center;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 1rem;
}

.price-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.price-option {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
}

.price-option .price {
    font-size: 2rem;
    margin: 0;
}

.price-option .period {
    color: var(--text-secondary);
    font-size: 1rem;
}

.price-option .savings {
    background: var(--accent-blue);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.pricing-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.pricing-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 700;
}

.pricing-note {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* How It Works */
.how-it-works {
    margin-top: 4rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    margin-bottom: 0.75rem;
}

.step p {
    color: var(--text-secondary);
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin-top: 4rem;
}

.cta h2 {
    margin-bottom: 1rem;
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Page Content (support, privacy) */
.page {
    max-width: 800px;
    margin: 0 auto;
}

.page h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page .meta {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.page section {
    margin-bottom: 2.5rem;
}

.page h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-align: left;
}

.page h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    margin-top: 1.5rem;
}

.page ul {
    margin-left: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.page li {
    margin-bottom: 0.5rem;
}

.page p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* FAQ */
.faq {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.faq:last-child {
    border-bottom: none;
}

.faq h3 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.faq p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Footer */
footer {
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

footer p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

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

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .feature-grid,
    .example-grid,
    .pricing-grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 2rem 0 3rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .download-btn {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .pricing {
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .description {
        font-size: 1rem;
    }

    .nav-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
    }
}