/* CSS Variables */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #252525;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #4ade80;
    --accent-hover: #22c55e;
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: 40px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero-image {
    max-width: 500px;
    margin: 0 auto 40px;
    border-radius: 16px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* CTA Button */
.cta-button {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.play-badge {
    height: 60px;
    width: auto;
}

/* Section Titles */
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-primary);
}

/* Feature Sections */
.feature-section {
    padding: 80px 0;
    background-color: var(--bg-primary);
}

.feature-section.alt {
    background-color: var(--bg-secondary);
}

.feature-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.feature-image {
    flex-shrink: 0;
}

.feature-text {
    text-align: center;
    max-width: 500px;
}

.feature-text h2 {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.watch-image {
    width: 200px;
    height: auto;
    border-radius: 50%;
    box-shadow: 0 20px 60px rgba(74, 222, 128, 0.2);
}

.phone-image {
    width: 250px;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* CTA Section */
.cta-section {
    padding: 60px 0;
    background-color: var(--bg-secondary);
    text-align: center;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background-color: var(--bg-primary);
    text-align: center;
}

.footer-cta {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.footer .play-badge {
    margin: 0 auto 40px;
}

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

/* Responsive */
@media (min-width: 768px) {
    .feature-row {
        flex-direction: row;
        justify-content: center;
        gap: 60px;
    }

    .feature-row.reverse {
        flex-direction: row-reverse;
    }

    .feature-text {
        text-align: left;
        flex: 1;
    }

    .feature-image {
        flex: 0 0 auto;
    }
}

@media (min-width: 1024px) {
    .hero-image {
        max-width: 600px;
    }

    .watch-image {
        width: 250px;
    }

    .phone-image {
        width: 300px;
    }

    .feature-row {
        gap: 80px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .cta-button,
    .feature-card {
        transition: none;
    }
}

/* Focus states */
a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}