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

:root {
    --primary-color: #FF5A5F;
    --text-dark: #1a1a1a;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --border-light: #E5E5E5;
}

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

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
}

.logo img {
    border-radius: 10px;
}

/* Hero Section */
.hero {
    background: var(--bg-white);
    padding: 60px 0 40px;
}

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

.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-gray);
    line-height: 1.5;
}

.free-badge {
    font-size: 15px;
    color: var(--text-gray);
    font-weight: 500;
    margin-bottom: 24px;
}

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

.hero-badges {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.badge {
    background: var(--bg-light);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-gray);
    border: 1px solid var(--border-light);
}

.app-store-button {
    display: inline-block;
    transition: transform 0.2s, opacity 0.2s;
}

.app-store-button:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.app-store-button img {
    display: block;
    height: 50px;
    width: auto;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 280px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* Privacy Banner */
.privacy-banner {
    background: var(--bg-light);
    padding: 50px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.privacy-banner h2 {
    font-size: 28px;
    margin-bottom: 12px;
    color: var(--text-dark);
    text-align: center;
}

.privacy-banner > .container > p {
    font-size: 16px;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto 32px;
    text-align: center;
}

.privacy-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.privacy-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-white);
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    border: 1px solid var(--border-light);
}

.privacy-item .check {
    color: #34C759;
    font-size: 18px;
    font-weight: bold;
}

/* Features Section */
.features {
    padding: 60px 0;
    background: var(--bg-white);
}

.features h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-dark);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 40px;
}

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

.feature-card {
    background: var(--bg-white);
    padding: 28px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 60px 0;
    background: var(--bg-light);
    border-top: 1px solid var(--border-light);
}

.screenshots h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--text-dark);
    font-weight: 700;
}

.screenshots-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    padding: 0 20px;
}

.screenshots-slider img {
    width: 100%;
    max-width: 240px;
    height: auto;
    margin: 0 auto;
    display: block;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.screenshots-slider img:hover {
    transform: scale(1.03);
}

/* Use Cases Section */
.use-cases {
    padding: 60px 0;
    background: var(--bg-white);
}

.use-cases h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--text-dark);
    font-weight: 700;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.use-case {
    background: var(--bg-light);
    padding: 28px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
}

.use-case h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
    font-weight: 600;
}

.use-case p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 60px 0;
    background: var(--bg-light);
    text-align: center;
    border-top: 1px solid var(--border-light);
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-dark);
    font-weight: 700;
}

.cta-section p {
    font-size: 16px;
    margin-bottom: 32px;
    color: var(--text-gray);
}

/* Footer */
footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border-light);
    padding: 32px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
}

.footer-logo img {
    border-radius: 8px;
}

footer p {
    color: var(--text-light);
    font-size: 13px;
}

.footer-email {
    margin: 8px 0;
}

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

.footer-email a:hover {
    color: var(--text-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-badges {
        justify-content: center;
    }
    
    .hero-image img {
        max-width: 240px;
    }
    
    .features h2,
    .screenshots h2,
    .use-cases h2,
    .cta-section h2 {
        font-size: 28px;
    }
    
    .features-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-slider {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .privacy-features {
        grid-template-columns: 1fr;
    }
    
    .privacy-banner h2 {
        font-size: 24px;
    }
}