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

:root {
    --primary-color: #6B46C1;
    --secondary-color: #F59E0B;
    --accent-color: #10B981;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --background-light: #F9FAFB;
    --white: #FFFFFF;
    --border-color: #E5E7EB;
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    font-size: 16px;
}

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

/* Header */
.header {
    background: var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.nav-brand h2 {
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
}

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

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #8B5CF6 100%);
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.5;
    margin-bottom: 32px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--white);
    padding: 16px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--warning-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* About Section */
.about {
    padding: 80px 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 64px;
    align-items: center;
}

.about h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-dark);
}

.about p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 24px;
    color: var(--text-light);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--background-light);
}

.features h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 64px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature {
    background: var(--white);
    padding: 32px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 24px;
}

.feature h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.feature p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.5;
}

/* Testimonials Section */
.testimonials {
    padding: 80px 0;
    background: var(--white);
}

.testimonials h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 64px;
    color: var(--text-dark);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.testimonial {
    background: var(--background-light);
    padding: 32px;
    border-radius: 16px;
    border-left: 4px solid var(--primary-color);
}

.testimonial-content p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 24px;
    color: var(--text-light);
    font-style: italic;
}

.testimonial-author strong {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.testimonial-author span {
    font-size: 14px;
    color: var(--text-light);
}

/* Signup Section */
.signup {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, #8B5CF6 100%);
    color: var(--white);
}

.signup-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.signup h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.signup p {
    font-size: 18px;
    margin-bottom: 48px;
    opacity: 0.9;
}

.signup-form {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    text-align: left;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

.form-checkbox {
    margin-bottom: 32px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 4px;
    width: auto;
    flex-shrink: 0;
}

.form-checkbox label {
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-light);
}

.form-checkbox a {
    color: var(--primary-color);
    text-decoration: none;
}

.form-checkbox a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

.footer-brand p {
    color: var(--text-light);
    font-size: 16px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-links a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    color: var(--text-light);
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .nav {
        padding: 16px;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .about,
    .features,
    .testimonials,
    .signup {
        padding: 60px 0;
    }
    
    .features h2,
    .testimonials h2,
    .about h2,
    .signup h2 {
        font-size: 28px;
    }
    
    .signup-form {
        padding: 24px;
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .cta-button {
        padding: 12px 24px;
        font-size: 16px;
    }
    
    .feature,
    .testimonial {
        padding: 24px;
    }
}