:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #8b5cf6;
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a2e;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #1e293b;
    --radius: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.8);
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 700;
}

.logo .highlight {
    color: var(--primary-light);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-nav {
    background: var(--primary);
    color: white;
    padding: 8px 20px;
}

.btn-nav:hover {
    background: var(--primary-dark);
    color: white;
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-secondary:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.btn-full {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
}

/* Hero */
.hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto;
}

/* Features */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.02), transparent);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step {
    position: relative;
    padding: 32px;
}

.step-number {
    font-size: 4rem;
    font-weight: 800;
    color: rgba(99, 102, 241, 0.15);
    line-height: 1;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.step p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* Use Cases */
.use-cases {
    padding: 100px 0;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.use-case-card {
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.use-case-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.use-case-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.use-case-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* Contact */
.contact {
    padding: 100px 0;
}

.contact-content {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.contact-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-content > p {
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 1.05rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s;
    outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
}

/* Footer */
.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
    max-width: 280px;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text);
    margin-bottom: 4px;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 80px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .features-grid,
    .steps,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}