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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #374151;
    background-color: #ffffff;
}

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

/* Header Styles */
.header {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #5850EC;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #5850EC;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-login {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.2s ease;
}

.btn-login:hover {
    color: #5850EC;
}

.btn-signup {
    background: #5850EC;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background-color 0.2s ease;
}

.btn-signup:hover {
    background: #4338CA;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: #ffffff;
    color: #5850EC;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background: transparent;
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.hero-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: #f9fafb;
}

.features-intro {
    text-align: center;
    margin-bottom: 4rem;
}

.features-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-description {
    color: #6b7280;
    line-height: 1.7;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: white;
    text-align: center;
}

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

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.cta-description {
    font-size: 1.1rem;
    color: #6b7280;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

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

.cta .btn-primary {
    background: #5850EC;
    color: white;
}

.cta .btn-primary:hover {
    background: #4338CA;
}

.cta .btn-secondary {
    background: transparent;
    color: #5850EC;
    border: 2px solid #5850EC;
}

.cta .btn-secondary:hover {
    background: #5850EC;
    color: white;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.footer-logo .logo-text {
    color: white;
}

.footer-description {
    color: #d1d5db;
    line-height: 1.6;
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-column a {
    color: #d1d5db;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: #5850EC;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .features {
        padding: 4rem 0;
    }
    
    .cta {
        padding: 4rem 0;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }