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

body {
    background: #0b0b0b;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
    padding: 40px 20px;
    max-width: 720px;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    margin-bottom: 64px;
    letter-spacing: 0.5px;
}

.switch {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    background: transparent;
    color: #ffffff;
    font-size: 2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.35s ease;
}

.switch:hover {
    background: #ffffff;
    color: #0b0b0b;
}

.subtext {
    margin-top: 56px;
    font-size: 1rem;
    opacity: 0.55;
}