:root {
    --bg-color: #000000;
    --card-bg: rgba(22, 22, 23, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #FFFFFF;
    --text-secondary: #d1d1d6;
    /* Brighter for better visibility */
    --accent-color: #2684FC;
    --accent-glow: rgba(38, 132, 252, 0.4);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --section-padding: 160px 80px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Video Background */
.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
    overflow: hidden;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6) contrast(1.1);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.5) 100%),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8));
    z-index: -5;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 30px 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    transition: color 0.3s ease;
    opacity: 0.8;
}

.nav-links a:hover {
    color: var(--text-primary);
    opacity: 1;
}

.nav-cta {
    display: flex;
    gap: 24px;
    align-items: center;
}

.btn-secondary {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color);
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero .badge {
    background: rgba(38, 132, 252, 0.1);
    border: 1px solid rgba(38, 132, 252, 0.2);
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent-color);
    margin-bottom: 32px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 100px;
    font-weight: 800;
    line-height: 1.0;
    margin-bottom: 32px;
    max-width: 1100px;
    letter-spacing: -4px;
    background: linear-gradient(180deg, #FFFFFF 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 24px;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 50px;
    font-weight: 400;
    opacity: 0.9;
}

/* Features Grid */
.features {
    padding: var(--section-padding);
    background: #000;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 100px;
}

.section-header h2 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 60px 40px;
    border-radius: 32px;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.icon-box {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 32px;
    font-size: 24px;
    color: var(--accent-color);
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}

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

/* How it Works */
.how-it-works {
    padding: var(--section-padding);
    background: #050505;
}

.how-it-works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-top: 80px;
}

.step-item {
    text-align: center;
}

.step-number {
    width: 64px;
    height: 64px;
    background: var(--text-primary);
    color: var(--bg-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: 800;
    margin: 0 auto 32px;
}

/* AI Deep Dive */
.ai-deep-dive {
    padding: var(--section-padding);
    background: radial-gradient(circle at bottom left, #111 0%, #000 70%);
}

.glass-panel {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 80px;
    border-radius: 48px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
    align-items: center;
}

/* CTA */
.cta-banner {
    padding: 120px 80px;
    text-align: center;
    background: var(--text-primary);
    color: var(--bg-color);
    border-radius: 60px;
    margin: 80px;
    position: relative;
    overflow: hidden;
}

.cta-banner h2 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 32px;
    letter-spacing: -3px;
}

.cta-banner .btn-primary {
    background: var(--bg-color);
    color: var(--text-primary);
    padding: 20px 60px;
    font-size: 18px;
}

/* Pricing */
.pricing {
    padding: var(--section-padding);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 60px;
    border-radius: 40px;
    transition: all 0.4s ease;
}

.pricing-card.premium {
    background: #FFFFFF;
    color: #000000;
    transform: scale(1.05);
}

.pricing-card.premium .pricing-features li {
    color: rgba(0, 0, 0, 0.7);
}

.pricing-card.premium .btn-primary {
    background: #000;
    color: #FFF;
}

.price {
    font-size: 56px;
    font-weight: 800;
    margin: 24px 0 40px;
    letter-spacing: -2px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 40px;
}

.pricing-features li {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 16px;
}

@media (max-width: 1200px) {

    .features-grid,
    .pricing-grid,
    .how-it-works-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 64px;
    }

    nav {
        padding: 30px 40px;
    }

    .glass-panel {
        grid-template-columns: 1fr;
        padding: 40px;
    }
}