:root {
    --primary-color: #4F46E5;
    --primary-light: #818CF8;
    --primary-dark: #3730A3;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --background-color: #ffffff;
    --background-alt: #F3F4F6;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header Styles */
header {
    background: linear-gradient(to right, var(--primary-dark), var(--primary-color));
    padding: 80px 0;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><circle cx="2" cy="2" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.5;
}

.header-content {
    position: relative;
    z-index: 1;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
    border: 4px solid rgba(255, 255, 255, 0.1);
}

.tagline {
    font-size: 1.4em;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 16px;
    font-weight: 300;
}

/* Main Content */
main {
    padding: 60px 0;
}

/* Card Styles */
.card {
    background: var(--background-color);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.feature-card {
    padding: 24px;
    border-radius: var(--radius-md);
    background: var(--background-color);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.feature-icon {
    background: var(--primary-light);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 60px 0;
    background: var(--background-alt);
    border-radius: var(--radius-lg);
    margin: 48px 0;
}

.app-store-button {
    display: inline-flex;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-store-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background-color: var(--primary-dark);
}

/* FAQ Section */
.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding: 24px 0;
}

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

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.2em;
}

/* Support Section */
.support-section {
    max-width: 800px;
    margin: 0 auto;
}

.contact {
    text-align: center;
    padding: 48px;
    background: var(--background-alt);
    border-radius: var(--radius-lg);
    margin-bottom: 48px;
}

.contact a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.contact a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background-color: var(--background-alt);
    padding: 48px 0;
    text-align: center;
    margin-top: 80px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    header {
        padding: 60px 0;
    }

    .app-icon {
        width: 100px;
        height: 100px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 16px;
    }
}

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

.animate-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.faq-card {
    background: var(--background-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.faq-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.faq-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.faq-icon i {
    color: white;
    font-size: 20px;
}

/* Privacy Policy Styles */
.policy-section {
    margin-bottom: 32px;
}

.section-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.section-icon i {
    color: white;
    font-size: 24px;
}

.policy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.policy-item {
    padding: 16px;
    background: var(--background-alt);
    border-radius: var(--radius-sm);
}

.policy-item h4 {
    color: var(--primary-color);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.security-features {
    display: flex;
    gap: 24px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.security-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.security-item i {
    color: var(--success-color);
}

.service-list {
    margin-top: 24px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.service-item:last-child {
    border-bottom: none;
}

.service-item i {
    color: var(--primary-color);
    font-size: 24px;
}

.service-item h4 {
    margin-bottom: 4px;
    color: var(--text-primary);
}

.service-item p {
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* Animation Classes */
.animate-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .faq-grid,
    .policy-grid {
        grid-template-columns: 1fr;
    }
    
    .security-features {
        flex-direction: column;
        gap: 16px;
    }
    
    .service-item {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
}