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

body {
    background: #f5f5f0;
    min-height: 100vh;
    font-family: 'Helvetica Neue', 'Hiragino Sans', sans-serif;
    color: #1d1d1b;
    overflow: hidden;
    cursor: pointer;
}

.stage {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #1d1d1b;
    transition: transform 0.1s linear;
    transform: scale(0.6);
}

.circle.active {
    background: #ff4200;
}

.hint {
    position: absolute;
    bottom: 18%;
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    letter-spacing: 0.15em;
    color: #1d1d1b;
    opacity: 0.6;
    transition: opacity 0.6s;
    text-transform: lowercase;
    pointer-events: none;
    font-weight: 300;
}

.hint.hidden {
    opacity: 0;
}

.hz {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(9.5rem, 18vw, 12rem);
    letter-spacing: 0.02em;
    color: #1d1d1b;
    opacity: 0;
    font-family: 'SF Mono', 'Fira Code', monospace;
    transition: opacity 0.6s;
    pointer-events: none;
    z-index: 5;
    font-weight: 300;
    mix-blend-mode: difference;
    color: #fff;
}

.hz.visible {
    opacity: 0.4;
}

.silenced .circle {
    background: #ccc;
}

.give-up {
    position: absolute;
    bottom: 6%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    border: 1.5px solid #1d1d1b;
    color: #1d1d1b;
    font-family: inherit;
    font-size: clamp(0.85rem, 1.6vw, 1.05rem);
    padding: 0.6rem 1.4rem;
    cursor: pointer;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    opacity: 0;
    transition: opacity 0.6s, background 0.2s, color 0.2s;
    pointer-events: none;
    border-radius: 2px;
    z-index: 10;
}

.give-up.visible {
    opacity: 1;
    pointer-events: auto;
}

.give-up.visible:hover {
    background: #1d1d1b;
    color: #fff;
}