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

/* Fonte e cores padrão */
body {
    font-family: 'Arial', sans-serif;
    background-color: #121212;
    color: #f0f0f0;
    line-height: 1.6;
}

header, footer {
    background-color: #1f1f1f;
    padding: 10px 0;
    text-align: center;
}

header h1 {
    color: #00d8ff;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 15px;
}

nav a {
    color: #00d8ff;
    text-decoration: none;
    padding: 5px 10px;
    transition: background 0.3s;
}

nav a:hover {
    background: #00d8ff;
    color: #121212;
    border-radius: 5px;
}

/* Conteúdo principal */
main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.container {
    background: #1f1f1f;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

footer {
    margin-top: 20px;
    color: #888;
}

/* Estilos responsivos */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        padding: 10px;
    }

    nav {
        text-align: center;
        background: #1f1f1f;
        padding: 5px;
    }

    .container {
        padding: 10px;
        margin: 0 auto;
        width: 90%;
    }

    main {
        padding: 10px;
    }

    .saldo-container {
        font-size: 18px;
        text-align: center;
    }

    .notificacoes, .salas {
        flex-direction: column;
        width: 100%;
    }

    .notificacoes, .salas {
        display: flex;
        flex-direction: column;
        margin-top: 10px;
    }

    .mensagem-sistema {
        font-size: 16px;
    }
}

/* Estilos para telas menores */
@media (max-width: 414px) {
    .saldo-container {
        font-size: 16px;
    }

    .notificacoes, .salas {
        font-size: 14px;
    }
}