body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0d0d0d;
    color: #f5f5f5;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background-color: #1a1a1a;
    padding: 1.5em 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    animation: fadeIn 1.2s ease-out;
}

header h1 {
    color: #00ccff;
    font-size: 2.5em;
    margin: 0;
    letter-spacing: 2px;
    text-transform: uppercase;
}

main {
    padding-top: 0px;
    padding-right: 20px;
    padding-bottom: 40px;
    padding-left: 20px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

h2 {
    color: #ffcc00;
    font-size: 2em;
    margin: 20px 0;
    opacity: 0;
    animation: fadeIn 0.8s ease-in-out forwards;
}

.video-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.video-container {
    background: #3c3a3a;
    padding: 15px;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.video-container:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 255, 255, 0.2);
}

.video-container iframe {
    width: 100%;
    height: 180px;
    border-radius: 10px;
    border: 2px solid #00ccff;
    transition: transform 0.3s ease;
}

.video-container:hover iframe {
    transform: scale(1.02);
}

.video-container p {
    margin: 10px 0 0;
    font-size: 1.1em;
    font-weight: bold;
    color: #f5f5f5;
    opacity: 0;
    animation: fadeIn 0.8s ease-in-out forwards;
}

.button {
    display: inline-block;
    padding: 12px 25px;
    margin-top: 20px;
    background-color: #00ccff;
    color: #0d0d0d;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    text-align: center;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.button:hover {
    background-color: #ffcc00;
    transform: scale(1.05);
}

.section {
    margin: 50px 0;
    padding: 30px;
    background: #3c3a3a;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    animation: fadeIn 0.8s ease-out;
}

.section h2 {
    color: white;
}

footer {
    background-color: #1a1a1a;
    padding: 1.5em 0;
    text-align: center;
    border-top: 2px solid #00ccff;
}

footer p {
    color: #f5f5f5;
    margin: 0;
}

/* Optimalizované animace */
@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

/* Media Queries */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .video-gallery {
        grid-template-columns: 1fr;
    }
    
    iframe {
        height: 160px;
    }
}