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

/* Root Variables */
:root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --accent-color: #007AFF;
    --bg-color: #FFFFFF;
    --bg-secondary: #F5F5F7;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border-color: #d2d2d7;
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header & Navigation */
header {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 16px 0;
}

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

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
#hero {
    text-align: center;
    padding: 80px 24px 100px;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-purple);
    color: white;
    padding: 8px 20px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
}

#hero h1 {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 21px;
    line-height: 1.5;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 40px;
}

/* App Store Button */
.app-store-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background-color: var(--primary-color);
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
}

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

.app-store-button.large {
    padding: 20px 40px;
    font-size: 19px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--border-color);
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat span {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* How It Works Section */
#how-it-works {
    padding: 80px 24px;
    background-color: var(--bg-secondary);
}

#how-it-works h2 {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 56px;
    letter-spacing: -1px;
}

.steps-simple {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.step-simple {
    flex: 1;
    text-align: center;
}

.step-emoji {
    font-size: 64px;
    margin-bottom: 16px;
    line-height: 1;
}

.step-simple h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.step-simple p {
    font-size: 16px;
    color: var(--text-secondary);
}

.arrow {
    font-size: 32px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

/* Features Section */
#features {
    padding: 80px 24px;
}

#features h2 {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 56px;
    letter-spacing: -1px;
}

.features-simple {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-simple {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-simple:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.feature-emoji {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.feature-simple h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-simple p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Use Cases Section */
#use-cases-new {
    padding: 80px 24px;
    background-color: var(--bg-secondary);
}

#use-cases-new h2 {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 56px;
    letter-spacing: -1px;
}

.use-cases-simple {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.use-case-simple {
    background: white;
    padding: 32px 24px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.use-case-simple:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}

.use-case-icon {
    font-size: 56px;
    margin-bottom: 16px;
}

.use-case-simple h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.use-case-simple p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* Social Proof Section */
#social-proof {
    padding: 80px 24px;
}

.proof-box {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    background: var(--gradient-purple);
    padding: 64px 48px;
    border-radius: 24px;
    color: white;
}

.proof-box h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 32px;
    letter-spacing: -1px;
}

.proof-text {
    font-size: 22px;
    line-height: 1.5;
    margin-bottom: 16px;
    font-style: italic;
    opacity: 0.95;
}

.proof-author {
    font-size: 16px;
    margin-bottom: 48px;
    opacity: 0.85;
}

.proof-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.proof-stat {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.85;
}

/* Final CTA Section */
#final-cta {
    padding: 100px 24px;
    text-align: center;
}

#final-cta h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

#final-cta p {
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
}

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

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

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

/* Support and Privacy Policy Pages */
#support,
#privacy-policy {
    padding: 80px 0;
}

#support .container,
#privacy-policy .container {
    max-width: 800px;
}

#support h1,
#privacy-policy h1 {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: -1px;
}

#support h2,
#privacy-policy h2 {
    font-size: 32px;
    font-weight: 600;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

#support h3,
#privacy-policy h3 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

#support p,
#privacy-policy p,
#privacy-policy ul {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

#privacy-policy ul {
    list-style-type: disc;
    margin-left: 24px;
}

#privacy-policy ul li {
    margin-bottom: 8px;
}

.faq-item {
    background-color: var(--bg-secondary);
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.faq-item h3 {
    color: var(--text-primary);
    margin-bottom: 8px;
    margin-top: 0;
}

.faq-item p {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    #hero h1 {
        font-size: 40px;
        letter-spacing: -1px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

    #how-it-works h2,
    #features h2,
    #use-cases-new h2,
    #final-cta h2 {
        font-size: 36px;
    }

    .steps-simple {
        flex-direction: column;
        gap: 48px;
    }

    .arrow {
        transform: rotate(90deg);
    }

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

    .use-cases-simple {
        grid-template-columns: 1fr;
    }

    .proof-box {
        padding: 48px 32px;
    }

    .proof-box h2 {
        font-size: 32px;
    }

    .proof-text {
        font-size: 18px;
    }

    .proof-stats {
        flex-direction: column;
        gap: 32px;
    }

    .footer-links {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    #hero {
        padding: 60px 16px 80px;
    }

    #hero h1 {
        font-size: 32px;
    }

    .app-store-button {
        padding: 14px 24px;
        font-size: 15px;
    }

    .app-store-button.large {
        padding: 16px 32px;
        font-size: 17px;
    }
}