:root {
    --bg-dark: #111827;
    --bg-light: #1F2937;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --accent: #38BDF8;
    --border-color: #374151;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.1), transparent 30%),
        radial-gradient(circle at 80% 90%, rgba(139, 92, 246, 0.1), transparent 30%);
    animation: move-gradient 20s infinite alternate ease-in-out;
}

@keyframes move-gradient {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(100px, -100px);
    }
}

.main-header {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: 1.25rem;
}

.beta-tag {
    font-size: 0.6em;
    font-weight: bold;
    color: var(--accent);
    vertical-align: super;
    margin-left: 4px;
    text-transform: uppercase;
}

.header-cta {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.2s;
    border: 1px solid var(--border-color);
}

.header-cta:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 8rem 2rem 4rem;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 8rem;
}

.hero-title {
    font-family: 'Manrope', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 auto 1.5rem;
    max-width: 800px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

.main-cta {
    display: inline-block;
    background: var(--accent);
    color: var(--bg-dark);
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.main-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.5);
}

.hero-animation-container {
    margin-top: 4rem;
    position: relative;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-animation {
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    font-size: 1rem; /* Larger font for hero */
}

/* Features Section */
.features-section {
    margin-bottom: 8rem;
    text-align: center;
}
.features-title {
    font-family: 'Manrope', sans-serif;
    font-size: 2.5rem;
    margin: 0 auto 3rem;
    color: var(--text-primary);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    text-align: left;
}
.feature-item {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}
.feature-item h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.25rem;
    margin: 0 0 0.75rem;
    color: var(--text-primary);
}
.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}


/* Testimonial Section */
.testimonial-section {
    max-width: 700px;
    margin: 0 auto 8rem;
    text-align: center;
}

.testimonial-section blockquote {
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1.5;
    margin: 0 0 1.5rem;
    border-left: 3px solid var(--accent);
    padding-left: 1.5rem;
    text-align: left;
}

.testimonial-section cite {
    font-style: normal;
    color: var(--text-secondary);
}

/* Final CTA */
.final-cta-section {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--bg-light);
    border-radius: 16px;
    margin-bottom: 4rem;
}

.final-cta-section h2 {
    font-family: 'Manrope', sans-serif;
    font-size: 2.5rem;
    margin: 0 0 1rem;
}

.final-cta-section p {
    color: var(--text-secondary);
    margin: 0 0 2rem;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

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

.usp-card:nth-child(2) {
    transition-delay: 0.1s;
}

.usp-card:nth-child(3) {
    transition-delay: 0.2s;
}

.usp-card:nth-child(4) {
    transition-delay: 0.3s;
}


/* Responsive */
@media (max-width: 1024px) {
    .container {
        padding: 6rem 2rem 4rem;
    }

    .hero-title {
        font-size: 3rem;
    }
}


@media (max-width: 768px) {
    .main-header {
        padding: 1rem;
    }

    .container {
        padding: 6rem 1rem 3rem;
    }

    .hero {
        margin-bottom: 6rem;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-item {
        padding: 1.5rem;
    }

    .testimonial-section {
        margin-bottom: 6rem;
    }

    .testimonial-section blockquote {
        font-size: 1.25rem;
    }

    .final-cta-section {
        padding: 3rem 1.5rem;
    }

    .final-cta-section h2 {
        font-size: 2rem;
    }
}