html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh; 
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Archivo Black', sans-serif;
    background-color: #ff4da6; 
    background-image: url('fundo-quiz.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover/cover; 
    background-attachment: fixed;
    overflow: hidden;
}

.container {
    text-align: center;
    padding: 20px;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    color: #ff4da6;
    text-transform: uppercase;
    line-height: 0.9;
    text-shadow: -4px -4px 0 #000, 4px -4px 0 #000, -4px 4px 0 #000, 4px 4px 0 #000, 8px 8px 0px rgba(0,0,0,0.3);
    animation: impacto 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}

.btn-comecar {
    margin-top: 40px;
    padding: 20px 60px;
    font-size: 1.5rem;
    background-color: #fff;
    color: #000;
    border: 5px solid #000;
    border-radius: 50px;
    cursor: pointer;
    font-family: 'Archivo Black', sans-serif;
    box-shadow: 0px 8px 0px #000;
    transition: all 0.2s;
}

.btn-comecar:hover {
    transform: scale(1.1) translateY(-5px);
    background-color: #000;
    color: #ff4da6;
    border-color: #fff;
    box-shadow: 0px 12px 0px #fff;
}

@keyframes impacto {
    0% { opacity: 0; transform: scale(0.5) rotate(-10deg); }
    100% { opacity: 1; transform: scale(1) rotate(0deg); }
}