body {
    font-family: 'Chakra Petch', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
    color: #333;
    transition: background-color 0.3s, color 0.3s;
}

header {
    background: #333;
    color: white;
    padding: 20px;
    text-align: center;
}

h1 {
    margin: 0;
}

button {
    background: #444;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #555;
}

.chamada {
    display: flex;
    align-items: center;
    padding: 20px;
}

.chamada-texto {
    flex: 1;
    padding: 20px;
}

.video-container {
    flex: 1;
    display: flex;
    justify-content: center;
}

.categoria {
    padding: 20px;
}

.categoria-videos {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.categoria-videos a {
    flex: 1 1 calc(25% - 10px);
    position: relative;
}

.categoria-videos img {
    width: 100%;
    border-radius: 5px;
    transition: transform 0.3s;
}

.categoria-videos img:hover {
    transform: scale(1.05);
}

footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: white;
}

.dark-mode {
    background-color: #121212;
    color: #f0f0f0;
}

.dark-mode header,
.dark-mode footer {
    background-color: #1e1e1e;
}

.dark-mode button {
    background: #555;
}

.dark-mode button:hover {
    background: #666;
}