body {
    margin: 0;
    padding: 0;
    background-color: #000000;
    color: white;
    font-family: Arial, sans-serif;
}

.navbar {
    background-color: #0a0a0a;
    padding: 1rem 2rem;
}

.navbar ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 1.5rem;
}

.navbar li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem;
    transition: color 0.3s ease, border-bottom 0.3s ease;
}

.navbar li a:hover,
.navbar li a.active {
    border-bottom: 2px solid #00ffff;
}

header {
    text-align: center;
    padding: 0;
}

.video-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.header-video {
    width: auto;
    height: auto;
    max-height: 250px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
}

.hero {
    text-align: center;
    padding: 3rem 2rem;
    margin-top: 0;
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta {
    display: inline-block;
    background-color: white;
    color: #0a0a0a;
    padding: 0.75rem 1.5rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.cta:hover {
    background-color: #c1c1c1;
}

.about {
    text-align: center;
    padding: 3rem 2rem;
    max-width: 700px;
    margin: 0 auto;
}

.tab-section {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tab-section.visible {
    display: block;
    opacity: 1;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    font-size: 0.9rem;
    color: #777;
}

@media (max-width: 768px) {
    .header-video {
        max-height: 180px;
    }

    .hero {
        padding-top: 2rem;
    }

    .about {
        padding-top: 2rem;
    }
}