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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #0a0e27;
    overflow-x: hidden;
}

/* Quantum-inspired gradient background */
.quantum-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 25%, #2d3748 50%, #1a237e 75%, #3f51b5 100%);
    z-index: -2;
}

.quantum-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(63, 81, 181, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 35, 126, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(55, 71, 200, 0.2) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    z-index: -1;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(10px) rotate(240deg); }
}

/* Header */
header {
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(63, 81, 181, 0.2);
}

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: bold;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: "⚛";
    font-size: 1.8rem;
    color: #3f51b5;
}

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

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3f51b5;
}

.cta-button {
    background: linear-gradient(135deg, #3f51b5 0%, #1a237e 100%);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(63, 81, 181, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(63, 81, 181, 0.4);
}

/* Main Content */
main {
    margin-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0 6rem;
    text-align: center;
    color: white;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #3f51b5 50%, #1a237e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.hero-cta {
    margin: 3rem 0;
}

.hero-cta .cta-button {
    font-size: 1.2rem;
    padding: 1rem 2rem;
    margin: 0 1rem;
}

/* Problem Section */
.problem {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    color: #333;
}

.problem h2 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    color: #1a237e;
    text-align: center;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #3f51b5;
}

.problem-card h3 {
    color: #d32f2f;
    margin-bottom: 1rem;
}

/* Solution Section */
.solution {
    padding: 4rem 0;
    color: white;
}

.solution h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(63, 81, 181, 0.3);
    transition: transform 0.3s;
}

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

.feature-card h3 {
    color: #3f51b5;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-card h3::before {
    content: "✅";
    font-size: 1.2rem;
}

/* Demo Section */
.demo {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    color: #333;
    text-align: center;
}

.demo h2 {
    font-size: 2.2rem;
    color: #1a237e;
    margin-bottom: 2rem;
}

.demo-mockup {
    max-width: 800px;
    margin: 3rem auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #e0e0e0;
}

.mockup-header {
    background: #f5f5f5;
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mockup-dots {
    display: flex;
    gap: 0.3rem;
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.mockup-dot:nth-child(1) { background: #ff5f56; }
.mockup-dot:nth-child(2) { background: #ffbd2e; }
.mockup-dot:nth-child(3) { background: #27ca3f; }

.mockup-content {
    padding: 2rem;
    text-align: left;
}

.audit-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    margin: 0.5rem 0;
    border-radius: 8px;
    border-left: 4px solid #4caf50;
}

.audit-result.warning {
    border-left-color: #ff9800;
}

.audit-result.error {
    border-left-color: #f44336;
}

/* Free Section */
.free {
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.free h2 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
}

.free .highlight {
    font-size: 1.5rem;
    color: #4caf50;
    font-weight: bold;
    margin: 1rem 0;
}

/* FAQ Section */
.faq {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    color: #333;
}

.faq h2 {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #1a237e;
}

.faq-item {
    background: white;
    margin: 1rem 0;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.faq-question {
    background: #3f51b5;
    color: white;
    padding: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #1a237e;
}

.faq-answer {
    padding: 1.5rem;
    background: white;
}

/* Footer */
footer {
    background: #0a0e27;
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(63, 81, 181, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    margin: 0.5rem 0;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #3f51b5;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

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

    .hero h1 {
        font-size: 2rem;
    }

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

    .container {
        padding: 0 1rem;
    }
}