:root {
    --bg: #171717;
    --text: #ffffff;
    --rainbow: linear-gradient(90deg,
            #ff0000,
            #ff7f00,
            #ffff00,
            #00ff00,
            #00bfff,
            #4b0082,
            #9400d3);
    --action-bg: #2b2b2b;
    --action-border: #ffffff33;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Comic Neue', 'Comic Sans MS', cursive, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: var(--bg);
    color: var(--text);
    text-align: center;
}

h1 {
    font-size: clamp(3rem, 8vw, 15rem);
    font-weight: bolder;
    background: var(--rainbow);
    background-size: 300% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: rainbow 5s linear infinite;
}

.action {
    color: var(--text);
    background: var(--action-bg);
    border: 2px solid var(--action-border);
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.action:hover,
.action:focus-visible {
    background: #3a3a3a;
    border-color: #ffffff66;
    transform: translateY(-1px);
}

.action:active {
    transform: translateY(0);
}

.box {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.command-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: min(880px, 90vw);
}

.command-layer {
    position: relative;
    border-radius: 12px;
    padding: 1rem 1.2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    cursor: text;
    user-select: text;
}

.completed {
    background: #00ff00;
    color: var(--bg);
}

a {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 999px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
}

@keyframes rainbow {
    from {
        background-position: 0% 50%;
    }

    to {
        background-position: 300% 50%;
    }
}