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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    height: 100%;
    overflow: hidden;
}

.logo {
    margin-left:3vh;
    color: #215ff1;
}

header {
    background: #1a1a1a;
    color: white;
    padding: 10px 0;
    text-align: center;
    margin-top: 0;
    display: flex;
    justify-content: space-between;
    position: static;
    width: 100%;
    box-shadow: rgb(0, 0, 0) 0px 20px 40px -5px;
}

main {
    background-color: #333; 
}

nav {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 0;
}

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    text-decoration: none;
    color: white;
    font-weight: bold;
}

.nav-links a:hover {
    color: #0d6efd;
}

.container {
    display: flex;
    height: 100vh;
}

.video {
    flex: 1; /* Aumenta a área do vídeo */
    padding: 20px;
}

video {
    width: 100%; /* Largura total do contêiner */
    height: auto;
    border: 1px solid #444;
}

.comments {
    flex: 1; /* Área de comentários */
    background-color: #282828;
    padding: 20px;
    overflow-y: auto; /* Permite rolagem se os comentários forem muitos */
}

.comment-box {
    max-height: 70vh; /* Limita a altura dos comentários */
    overflow-y: auto; /* Permite rolagem */
}

.comment-input {
    width: calc(100% - 100px); /* Ajusta a largura do campo de entrada */
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #444;
    background-color: #333;
    color: #fff;
}

.comment-author {
    color: #ffffff48; 
    font-weight: bold;
}

button {
    padding: 10px;
    margin-top: 10px;
    background-color: #086bff; /* Cor do botão */
    color: #ffffff;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #1c76fe; /* Cor do botão ao passar o mouse */
}

.material-curso {
    margin-top: 2%;
}

.download-button {
    background-color: transparent;
    color: #fff;
}

.download-button:hover {
    background-color: transparent;
    color: #0d6efd;
}

.botao {
    background: #0d6efd;
    padding: 10px 20px;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    color: #0d6efd;
}

.botao:hover {
    background: transparent;
    transition: all 0.7s;
    border: #0d6efd solid 3px;
    color: #0d6efd;
}