:root {
    --bg: #0b1021; /* Deep navy */
    --card: #111735; /* Slightly lighter */
    --accent: #6dd3ff; /* Cyan */
    --accent-2: #a8ffb5; /* Mint */
    --text: #e8ecf3; /* Light */
    --muted: #b7c1d6; /* Muted */
    --border: #1c244b; /* Border */
    --ok: #21c274; /* Success */
    --warn: #ffc857; /* Warning */
    --shadow: 0 10px 30px rgba(0,0,0,.35);
    --radius: 18px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(11, 16, 33, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 0;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

    .nav-links a {
        color: var(--muted);
        text-decoration: none;
        transition: color 0.3s ease;
    }

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

.cta-button {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

    .cta-button:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow);
    }

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(109, 211, 255, 0.1) 0%, transparent 70%);
        border-radius: 50%;
        z-index: -1;
    }

    .hero h1 {
        font-size: 3.5rem;
        font-weight: 800;
        margin-bottom: 1.5rem;
        background: linear-gradient(135deg, var(--text), var(--accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .hero .subtitle {
        font-size: 1.3rem;
        color: var(--muted);
        margin-bottom: 2rem;
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
    }

.hero-taglines {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tagline {
    background: var(--card);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    color: var(--accent);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.secondary-button {
    background: transparent;
    color: var(--accent);
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--accent);
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

    .secondary-button:hover {
        background: var(--accent);
        color: var(--bg);
    }

/* Features Grid */
.features {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.feature-card {
    background: var(--card);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

    .feature-card:hover {
        transform: translateY(-5px);
    }

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent);
}

.feature-card p {
    color: var(--muted);
    line-height: 1.6;
}

/* Value Propositions */
.value-props {
    background: linear-gradient(135deg, var(--card), rgba(17, 23, 53, 0.8));
    padding: 4rem 2rem;
    margin: 4rem 0;
}

.value-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

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

    .value-item h3 {
        font-size: 1.5rem;
        color: var(--accent-2);
        margin-bottom: 1rem;
        font-weight: 600;
    }

.value-list {
    list-style: none;
    text-align: left;
}

    .value-list li {
        padding: 0.5rem 0;
        color: var(--muted);
        position: relative;
        padding-left: 2rem;
    }

        .value-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--ok);
            font-weight: bold;
        }

/* Use Cases */
.use-cases {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.use-case {
    background: var(--card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--accent);
    transition: border-left-color 0.3s ease;
}

    .use-case:hover {
        border-left-color: var(--accent-2);
    }

    .use-case h4 {
        color: var(--accent);
        font-weight: 600;
        margin-bottom: 0.5rem;
    }

    .use-case p {
        color: var(--muted);
        font-size: 0.9rem;
    }

/* Pricing Preview */
.pricing-preview {
    background: var(--card);
    padding: 4rem 2rem;
    text-align: center;
}

.pricing-highlight {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(109, 211, 255, 0.1), rgba(168, 255, 181, 0.1));
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

    .pricing-highlight h3 {
        font-size: 1.8rem;
        color: var(--text);
        margin-bottom: 1rem;
    }

    .pricing-highlight p {
        color: var(--muted);
        margin-bottom: 2rem;
    }

/* Footer */
footer {
    background: var(--bg);
    border-top: 1px solid var(--border);
    padding: 3rem 2rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

    .footer-links a {
        color: var(--muted);
        text-decoration: none;
        transition: color 0.3s ease;
    }

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .hero-taglines {
        flex-direction: column;
        align-items: center;
    }

    .nav-links {
        display: none;
    }

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

    .value-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero, .features, .value-props, .use-cases {
    animation: fadeInUp 0.8s ease-out;
}