:root {
    --cor-principal: #ffffff;
    --cor-fundo-fallback: #000000;
}

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

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--cor-fundo-fallback);
    color: #fff;
    font-family: "Times New Roman", Times, serif;
}

.hero {
    width: 100%;
    height: 100vh;

    background:
        linear-gradient(
            rgba(0, 0, 0, 0.20),
            rgba(0, 0, 0, 0.45)
        );

    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    padding: 20px;
    transition: background-image 1s ease-in-out;
}

.content-box {
    max-width: 95vw;
    text-align: center;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1;
    letter-spacing: -1px;
    text-align: center;
    white-space: normal;
}

h6 {
    margin-top: 12px;
    font-size: clamp(0.9rem, 1.4vw, 1.2rem);
    font-weight: 400;
    text-align: center;
    letter-spacing: 0.5px;
}

.btn-container {
    margin-top: 5vh;
    display: flex;
    justify-content: center;
    width: 100%;
}

.btn {
    padding: clamp(10px, 1.5vw, 15px)
             clamp(25px, 4vw, 45px);

    font-size: clamp(0.75rem, 1vw, 0.95rem);

    text-transform: uppercase;
    letter-spacing: 3px;
    text-decoration: none;

    color: #fff;

    border: 1px solid rgba(255,255,255,.4);

    background: rgba(255,255,255,.1);

    backdrop-filter: blur(10px);

    transition: all .4s cubic-bezier(.23,1,.32,1);
}

.btn:hover {
    background: rgba(255,255,255,.25);
    border-color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,.3);
}

@media (max-width: 768px) {
    h1 {
        font-size: clamp(2rem, 9vw, 3.2rem);
    }

    h6 {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .btn-container {
        margin-top: 8vh;
    }

    h1 {
        font-size: clamp(1.8rem, 10vw, 2.8rem);
        line-height: 1.05;
    }

    h6 {
        font-size: 0.9rem;
    }
}