/* ================== RESET BÁSICO ================== */
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* evita rolagem horizontal */
    font-family: Arial, sans-serif;
    color: white;
    background: linear-gradient(rgba(0, 0, 0, 0.829), rgba(0, 0, 0, 0.829)),
        url("../assents/img/fundovideos.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* ================== CABEÇALHO ================== */
header {
    font-family: "Gill Sans", sans-serif;
    background-color: #000000;
    color: white;
    padding: 10px 0;
    text-align: center;
}

h1 {
    color: white;
    text-align: center;
}

h2 {
    color: white;
    text-align: center;
    text-shadow: 2px 2px 4px black;
}

span {
    color: rgb(255, 217, 0);
}

/* ================== BOTÃO VOLTAR ================== */
.nav-button {
    position: relative;
    max-width: 900px;
    margin: 10px 0 20px 0;
    padding-left: 10px;
    text-align: left;
}

.nav-button button {
    background: none;
    border: none;
    font-size: 2em;
    cursor: pointer;
    padding: 0;
    margin: 0;
    color: #000000;
    transition: background-color 0.3s, color 0.3s;
}

.nav-button button:hover {
    color: rgb(255, 219, 17);
}

a {
    font-size: 1em;
    color: white;
    text-decoration: none;
}

a:hover {
    color: rgb(255, 219, 17);
}

/* ================== CONTAINER PRINCIPAL ================== */
.container {
    background-color: rgb(70, 70, 70);
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    border: 2px solid rgb(255, 217, 0);
    width: fit-content;
    margin: 0 auto 40px auto;
}

.container p {
    text-align: left;
    color: white;
    text-shadow: 2px 2px 4px black;
}

/* ================== VÍDEOS / CAPAS ================== */
.video-container {
    position: relative;
    padding-bottom: 56.25%; /* proporção 16:9 */
    height: 0;
    overflow: hidden;
    margin-bottom: 15px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.7);
}

.video-container iframe,
.video-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    object-fit: cover;
}

.video-container img {
    cursor: pointer;
}

/* ================== FOOTER ================== */
#footer_copyright {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: black;
    color: white;
    text-align: center;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

/* ================== RESPONSIVO ================== */
@media screen and (max-width: 900px) {
    .nav-button {
        position: static;
        max-width: none;
        margin: 20px auto 30px auto;
        text-align: center;
        padding-left: 0;
    }

    .container {
        width: 90%;
        padding: 15px;
    }
}

@media screen and (max-width: 480px) {
    h1,
    h2 {
        font-size: 1.2em;
    }

    .video-container {
        margin-bottom: 20px;
    }
}