:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --background-color: #f3f4f6;
    --testimonial-bg: #4f46e5;
    --testimonial-text: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

/* Header Styles */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease-in-out;
}

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

.nav-link:hover::after {
    width: 100%;
}

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

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem 1rem;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.hero-content {
    flex: 1;
}

.hero-image {
    flex: 1;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #4b5563;
}

/* Features Section */
.features {
    background-color: var(--background-color);
    padding: 4rem 1rem;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    max-width: 1200px;
    margin: 0 auto 3rem;
    display: flex;
    gap: 2rem;
    align-items: center;
    padding: 2rem;
    border-radius: 0.5rem;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    background-color: white;
}

.feature-content {
    flex: 1;
}

.feature-image {
    flex: 1;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

.feature-card li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-right: 1.5rem;
}

.feature-card li::before {
    content: "✓";
    color: var(--primary-color);
    position: absolute;
    right: 0;
}

/* Testimonials Section */
.testimonials {
    background-color: var(--testimonial-bg);
    color: var(--testimonial-text);
    padding: 4rem 1rem;
}

.testimonials h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 0.5rem;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    background: rgba(255, 255, 255, 0.15);
}

.testimonial-text {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: bold;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 4rem auto;
    padding: 2rem 1rem;
}

.contact-form h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 0.25rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--text-color);
    color: white;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.25rem;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: var(--secondary-color);
}

.submit-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 1rem;
}

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

/* Responsive Images */
.placeholder-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: 0.5rem;
    cursor: pointer;
}

img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0.5rem;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

img:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.modal.visible {
    opacity: 1;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90vh;
}

.modal-image {
    width: 100%;
    height: auto;
    border-radius: 1rem;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Media Queries */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .feature-card {
        flex-direction: column;
        text-align: center;
        padding: 0 1rem;
    }

    .feature-card:nth-child(even) {
        flex-direction: column;
    }

    .feature-card li {
        padding-right: 0;
        padding-left: 0;
    }

    .feature-card li::before {
        position: static;
        margin-left: 0.5rem;
    }

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

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

@media (max-width: 480px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}