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

:root {
    --primary-color: #0066cc;
    --secondary-color: #00d4ff;
    --dark-color: #1a1a1a;
    --light-color: #f5f5f5;
    --text-color: #333;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

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

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

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

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

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

/* Hero Section */
.hero {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: #555;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* Buttons */
.btn {
    padding: 12px 32px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* Features Section */
.features {
    padding: 80px 20px;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

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

.feature-card {
    padding: 2rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #e0e0e0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 102, 204, 0.15);
    background: white;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.feature-card p {
    color: #666;
}

/* Social Proof Section */
.social-proof {
    padding: 80px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.stat h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Testimonials Section */
.testimonials {
    padding: 80px 20px;
    background: var(--light-color);
}

.testimonials h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

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

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
}

.stars {
    color: #ffc107;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.testimonial-card p {
    margin-bottom: 1.5rem;
    color: #555;
    font-size: 1rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.testimonial-author strong {
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.testimonial-author span {
    color: #999;
    font-size: 0.9rem;
}

/* Download Section */
.download {
    padding: 80px 20px;
    background: linear-gradient(135deg, #0066cc 0%, #00d4ff 100%);
    color: white;
    text-align: center;
}

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

.download p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.store-button {
    padding: 15px 30px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.store-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.store-icon {
    font-size: 2rem;
}

.store-button div {
    text-align: left;
}

.store-button small {
    display: block;
    opacity: 0.8;
}

.store-button strong {
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 20px 1rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-section p {
    opacity: 0.8;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #aaa;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    opacity: 0.6;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    margin: 10% auto;
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

.close {
    color: #aaa;
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-content h2 {
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.modal-content p {
    color: #555;
    margin-bottom: 1rem;
}

.email-form {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.email-form input {
    flex: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.email-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.email-form button {
    padding: 12px 24px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

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

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

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .features h2,
    .testimonials h2,
    .social-proof h2,
    .download h2 {
        font-size: 2rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .store-button {
        width: 100%;
        justify-content: center;
    }

    .footer .container {
        grid-template-columns: 1fr;
    }
}