/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1f2937;
    --darker: #0f172a;
    --light: #f8fafc;
    --gray: #64748b;
    --border: #e2e8f0;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--darker);
    color: white;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.logo .tagline {
    font-size: 0.875rem;
    color: var(--gray);
    opacity: 0.8;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

/* Problem Section */
.problem {
    padding: 5rem 0;
    background: white;
}

.problem h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.problem-card {
    background: var(--light);
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border);
}

.problem-card .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.problem-card ul {
    list-style: none;
}

.problem-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.problem-card li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--gray);
}

/* Solution Section */
.solution {
    padding: 5rem 0;
    background: var(--light);
}

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

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

.solution-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--secondary);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.solution-card .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.solution-card ul {
    list-style: none;
}

.solution-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.solution-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.solution-card strong {
    color: var(--dark);
}

/* Marketplace Benefits Section */
.marketplace-benefits {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
}

.marketplace-benefits h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--darker);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
    text-align: center;
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.benefit-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Products Section */
.products {
    padding: 5rem 0;
    background: white;
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 3rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid var(--border);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.product-tagline {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    display: block;
}

.product-card p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.status.live {
    background: #dcfce7;
    color: #166534;
}

.status.beta {
    background: #dbeafe;
    color: #1e40af;
}

.status.development {
    background: #fef3c7;
    color: #92400e;
}

.product-link {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.product-link:hover {
    text-decoration: underline;
}

/* Principles Section */
.principles {
    padding: 5rem 0;
    background: var(--light);
}

.principles h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.principle-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid var(--border);
    transition: all 0.3s;
    position: relative;
}

.principle-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--primary);
}

.principle-card .number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.2;
    margin-bottom: 1rem;
}

.principle-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.principle-card p {
    color: var(--gray);
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: white;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info p {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--gray);
}

.contact-info strong {
    color: var(--dark);
}

/* Footer */
.footer {
    background: var(--darker);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer a {
    color: #93c5fd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: white;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer .version {
    color: var(--gray);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    opacity: 0.7;
}

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav {
        display: none; /* Add mobile menu toggle in JS */
    }

    .product-grid,
    .principles-grid,
    .problem-grid,
    .solution-grid {
        grid-template-columns: 1fr;
    }
}