:root {
    --primary-color: #0066ff;
    --secondary-color: #f0f4f8;
    --text-color: #333;
    --light-text-color: #666;
    --background-color: #ffffff;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

header {
    background-color: var(--background-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    margin: 1rem 0rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.btn i {
    margin-left: 0.5rem;
}

.btn:hover {
    transform: translateY(-2px);
}

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

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

.btn-large {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

.hero {
    background-color: var(--secondary-color);
    text-align: center;
    padding: 4rem 0;
}

.hero .container {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--light-text-color);
    margin-bottom: 2rem;
}

.hero .btn {
    font-size: 1.1rem;
    padding: 0.75rem 1.5rem;
}

.subtext {
    font-size: 0.8rem;
    color: var(--light-text-color);
    margin-top: 0.5rem;
    margin-bottom: 2rem;
}

.hero-image {
    max-width: 100%;
    height: auto;
    margin-top: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.highlight {
    position: relative;
    font-weight: bold;
    z-index: 1;
    display: inline-block;
}

.highlight::before {
    content: "";
    position: absolute;
    left: -0.1em;
    right: -0.1em;
    top: 0.1em;
    bottom: 0.1em;
    background-color: rgba(0, 102, 255, 0.2);
    transform: rotate(-2deg);
    z-index: -1;
}

.clients {
    background-color: var(--background-color);
    padding: 2rem 0;
    text-align: center;
    margin-bottom: -3em;
}

.clients .container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
}

.clients img {
    height: 30px;
    margin: 1rem;
    opacity: 0.7;
    filter: grayscale(1);
    transition: opacity 0.3s ease;
}

.clients img:hover {
    opacity: 1;
    filter: grayscale(0.25);
}

.features {
    padding: 4rem 0;
    background-color: var(--background-color);
}

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

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

.feature-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--secondary-color);
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.feature-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.testimonials {
    background-color: var(--secondary-color);
    padding: 4rem 0;
}

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

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

.testimonial-item {
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

.testimonial-content {
    flex-grow: 1;
}

.testimonial-item p {
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 1rem;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 1rem;
}

.testimonial-author p {
    font-weight: 600;
}

.testimonial-author span {
    font-size: 0.9rem;
    color: var(--light-text-color);
}

.stars {
    color: #ffc107;
    margin-top: 0.5rem;
}

.demo {
    padding: 4rem 0;
    background-color: var(--background-color);
}

.demo h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.demo p {
    text-align: center;
    margin-bottom: 2rem;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.pricing {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.pricing h2 {
    text-align: center;
    margin-bottom: 3rem;
}

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

.pricing-item {
    background-color: var(--background-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.pricing-item.featured {
    background-color: var(--primary-color);
    color: white;
}

.pricing-item h3 {
    margin-bottom: 1rem;
}

.pricing-item .price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.pricing-item .price span {
    font-size: 1rem;
    font-weight: 400;
}

.pricing-item ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-item ul li {
    margin-bottom: 0.5rem;
}

.pricing-item ul li i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.pricing-item.featured ul li i {
    color: white;
}

.faq {
    padding: 4rem 0;
    background-color: var(--background-color);
}

.faq h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--secondary-color);
    border-radius: 5px;
}

.faq-item h3 {
    padding: 1rem;
    cursor: pointer;
    position: relative;
    font-weight: 500;
}

.faq-item h3::after {
    content: '\f078';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    right: 1rem;
    transition: transform 0.3s ease;
}

.faq-item h3.active::after {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 1rem;
    background-color: var(--secondary-color);
}

footer {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons li a {
    font-size: 1.5rem;
    color: #ccc;
    transition: color 0.3s ease;
}

.social-icons li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.otto-in-action {
    margin-top: 100rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

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

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        background-color: var(--background-color);
        width: 100%;
        flex-direction: column;
        align-items: center;
        transition: left 0.3s ease;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 1rem 0;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .cta-buttons {
        display: none;
    }

    .clients img {
        height: 25px;
    }

    .video-container {
        display: none;
    }

    .otto-in-action {
        display: block;
    }
}

@media print {
    .hero, .features, .pricing, .faq {
        page-break-inside: avoid;
    }

    .btn, .video-container {
        display: none;
    }
}