body {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    min-height: 100vh;
    font-family: 'Poppins', sans-serif;
    background-image: url(../imagens/relogioback.png);
    background-size: cover;
    background-position: center;
    color: #ff80ff;
}

.container {
    width: 90%;
    max-width: 500px;
    font-size: clamp(1rem, 4vw, 2rem);
    margin-bottom: clamp(2rem, 5vh, 5rem);
    color: #ffffff;
    text-align: center;
    line-height: clamp(1.2rem, 4vw, 1.5rem);
    border-radius: 50px;
    background-color: rgba(255,0,255,0.1);
    padding: clamp(1rem, 3vw, 2rem);
    box-sizing: border-box;
}

.header {
    letter-spacing: 3px;
    text-transform: uppercase;
    font-size: clamp(1.5rem, 5vw, 3rem);
    padding: clamp(0.5rem, 2vw, 1rem);
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
}

.button {
    padding: clamp(0.5rem, 2vw, 1rem) clamp(1rem, 4vw, 2rem);
    font-size: clamp(0.8rem, 2.5vw, 1.2rem);
    background-color: #25002e;
    border: 1px solid #ff00ff;
    color: #fff;
    border-radius: 12px;
    transition: 0.3s;
    cursor: pointer;
    flex: 1 1 40%; /* permite que cada botão ocupe até 40% do container e quebre linha se necessário */
    min-width: 120px;
    box-sizing: border-box;
}

.button:hover {
    background-color: #00e1ff;
    color: #1100ff;
    box-shadow: 0 0 20px #ff00ff, 0 0 40px #00eeff;
}

.button.active {
    background-color: #00e1ff;
    color: #000;
    border-color: #0037ff;
    box-shadow: 0 0 15px #0037ff, 0 0 30px #0037ff;
}

.buttons-container {
    display: flex;
    justify-content: center;
    gap: clamp(0.5rem, 3vw, 1rem);
    margin-top: clamp(1rem, 3vh, 2rem);
    flex-wrap: wrap;
}

#display {
    font-size: clamp(2rem, 10vw, 5rem);
    font-weight: bold;
    color: white;
    margin: clamp(1.5rem, 5vh, 3rem) 0;
    text-shadow: #fff;
    text-align: center;
    word-wrap: break-word;
}

.neon {
    text-align: center;
    color: #fff;
    font-size: clamp(2rem, 8vw, 4rem);
    text-shadow: 0 0 10px #0ff, 0 0 20px #0ff;
}

.neon .top {
    display: block;
    margin-bottom: 10px;
}

.neon .bottom {
    display: block;
}

@media (max-width: 480px) {
    .container {
        font-size: 1rem;
        padding: 0.8rem;
        margin-bottom: 1.5rem;
    }

    .header {
        font-size: 1.5rem;
    }

    #display {
        font-size: 2rem;
        margin: 1rem 0;
    }

    .button {
        flex: 1 1 100%; /* cada botão ocupa 100% em telas muito pequenas */
        padding: 0.5rem 0.8rem;
        font-size: 0.9rem;
    }

    .buttons-container {
        gap: 0.5rem;
    }

    .neon {
        font-size: 2rem;
    }
}