/* Fundo da tela */
body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: url('https://img.freepik.com/premium-photo/modern-gym-interior-yellow-black-concept_832479-8386.jpg') no-repeat center center fixed;
    background-size: cover;
    font-family: 'Segoe UI', sans-serif;
}

/* Sobreposição escura */
.overlay {
    background-color: rgba(0, 0, 0, 0.6);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Container do formulário */
.form-container {
    background: rgba(0, 0, 0, 0.9); /* Preto com leve transparência */
    padding: 40px;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0,0,0,0.7);
    animation: fadeIn 0.8s ease-in-out;
}

/* Títulos e textos em branco */
.form-container h1,
.form-container h2,
.form-container p {
    color: #fff;
}

/* Inputs e selects */
form input,
form select {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    background: #222;
    color: #fff;
}

/* Placeholder em cinza claro */
form input::placeholder,
form select {
    color: #bbb;
}

/* Botão */
form button {
    width: 100%;
    padding: 12px;
    background-color: #FFD700;
    color: #000;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.3s;
}

form button:hover {
    background-color: #e6c200;
}

/* Animação suave */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}