:root {
    --paper: #F3F3EF;
    --ink: #000000;
    --ink-soft: #4A4A4A;
    --blue: #0000FF;
    --red: #EE0000;
    --blue-pure: #0000FF;

    --frame-offset: 15px;
    --frame-gap: var(--frame-offset);
    --frame-border: 5px;

    --safe-top: env(safe-area-inset-top);
    --safe-right: env(safe-area-inset-right);
    --safe-bottom: env(safe-area-inset-bottom);
    --safe-left: env(safe-area-inset-left);
}

* { box-sizing: border-box; }

html { height: 100%; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background: var(--paper);
    color: var(--ink);
    font-family: 'Inter', 'Space Grotesk', system-ui, sans-serif;
}

.blue-frame {
    position: fixed;
    top: calc(var(--frame-offset) + var(--safe-top));
    right: calc(var(--frame-offset) + var(--safe-right));
    bottom: calc(var(--frame-offset) + var(--safe-bottom));
    left: calc(var(--frame-offset) + var(--safe-left));
    border: var(--frame-border) solid var(--blue-pure);
    background: transparent;
    pointer-events: none;
    z-index: 2;
}

.blue-frame .logo-container,
.blue-frame .menu-container,
.blue-frame .work-note-trigger,
.blue-frame .work-note-panel {
    pointer-events: auto;
}

.cube-stage {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: var(--paper);
}

.cube-canvas {
    display: block;
    width: 100%;
    height: 100%;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    cursor: grab;
}

.cube-canvas:active { cursor: grabbing; }

.cube-noscript {
    position: absolute;
    inset: 0;
    display: flex;
    flex-wrap: wrap;
    align-content: center;
    gap: 18px;
    justify-content: center;
    text-align: center;
    font-size: 13px;
    line-height: 1.5;
    color: var(--ink-soft);
}
.cube-noscript p { flex-basis: 100%; margin: 0; }
.cube-noscript svg { width: 180px; height: 180px; }