* {
    box-sizing: border-box
}

body.menu-body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #996b07;
    color: #fff;
    font-family: system-ui, sans-serif
}

.home-button {
    position: fixed;
    top: 12px;
    left: 12px;
    color: #fff;
    text-decoration: none;
    display: flex;
    gap: 6px;
    align-items: center;
    background: #0004;
    padding: 8px 12px;
    border-radius: 10px
}

.container {
    text-align: center;
    padding: 24px;
    max-width: 560px
}

h1 {
    font-size: clamp(28px, 6vw, 44px);
    margin: 0 0 6px
}

.subtitle {
    opacity: .85;
    margin: 0 0 24px
}

#levels {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    gap: 10px;
    margin-bottom: 24px
}

.lv {
    display: block;
    padding: 16px 0;
    border-radius: 12px;
    background: #feb854;
    color: #222;
    font-weight: 700;
    text-decoration: none;
    font-size: 18px
}

.lv.done {
    background: #8fd18f
}

.lv.locked {
    background: #0004;
    color: #fff8
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 12px;
    background: #fff;
    color: #222;
    font-weight: 700;
    text-decoration: none;
    font-size: 18px
}

.worlds {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 0 0 16px
}

.worlds[hidden] {
    display: none
}

.worlds h2 {
    margin: 0;
    min-width: 140px;
    font-size: 22px
}

.arrow {
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: #feb854;
    color: #222;
    font-size: 30px;
    font-weight: 700;
    line-height: 1;
    cursor: pointer
}

.arrow:disabled {
    opacity: .35;
    cursor: default
}

.world-note {
    margin: 0 0 16px;
    padding: 10px 14px;
    border-radius: 12px;
    background: #0004;
    font-weight: 600
}

.world-note[hidden] {
    display: none
}

@media (orientation: portrait) and (pointer: coarse) {

    html,
    body {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vh;
        height: 100vw;
        transform-origin: top left;
        transform: translateX(100vw) rotate(90deg);
        overflow: hidden;
    }
}