/* Design System Colors - matching iOS app */
:root {
    --color-purple: #8B5CF6;
    --color-cyan: #06B6D4;
    --color-orange: #F97316;
    --color-green: #10B981;
    --color-fire: #FF6B35;

    --color-bg: #FFFFFF;
    --color-text: #1F2937;
    --color-text-secondary: #6B7280;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    --spacing-4xl: 64px;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navigation */
nav {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid #E5E7EB;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-purple), var(--color-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-cta {
    color: var(--color-purple);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.nav-cta:hover {
    opacity: 0.7;
}

/* Hero */
.hero {
    padding: var(--spacing-4xl) 0;
    text-align: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-purple), var(--color-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-purple), var(--color-cyan));
    color: white;
    padding: var(--spacing-lg) var(--spacing-3xl);
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

/* Features */
.features {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-3xl);
}

.feature {
    text-align: center;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
}

.feature h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

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

/* CTA Section */
.cta-section {
    padding: var(--spacing-4xl) 0;
    text-align: center;
    background: linear-gradient(135deg,
        rgba(139, 92, 246, 0.05),
        rgba(6, 182, 212, 0.05)
    );
}

.cta-section h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-section > p {
    color: var(--color-text-secondary);
    font-size: 18px;
    margin-bottom: var(--spacing-2xl);
}

.privacy-note {
    margin-top: var(--spacing-xl);
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* Footer */
footer {
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid #E5E7EB;
    text-align: center;
}

footer p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .features .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .cta-section h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-3xl) 0;
    }

    .hero-title {
        font-size: 32px;
    }

    .cta-button {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 16px;
    }
}