#content-div:has(.tb-app) {
    max-width: 70em;
    gap: 0;
}

.tb-app {
    width: 100%;
    max-width: none;
}

.tb-hud {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}

.tb-hud-group {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.tb-hud-label {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #8a8f9c;
}

.tb-hud-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: orange;
    font-variant-numeric: tabular-nums;
}

.tb-hud-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
    flex-wrap: wrap;
}

.tb-chip {
    background: rgba(255, 255, 255, 0.08);
    color: #e6e8ee;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    padding: 0.35rem 0.9rem;
    font-size: 0.8rem;
    cursor: pointer;
}

.tb-chip:hover {
    background: rgba(255, 165, 0, 0.18);
    color: orange;
}

.tb-stage {
    position: relative;
    width: min(100%, (100dvh - 13rem) * 8 / 5);
    aspect-ratio: 8 / 5;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    background: #12131a;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.tb-stage:fullscreen {
    width: 100%;
    height: 100%;
    aspect-ratio: auto;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tb-stage:fullscreen #tb-canvas {
    width: min(100%, 100vh * 8 / 5);
    height: auto;
    aspect-ratio: 8 / 5;
}

#tb-canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

/* The HUD sits outside the stage, so it is not on screen once the stage goes
   fullscreen — without this there is no in-page way back out. */
.tb-exit-fullscreen {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    z-index: 6;
    display: none;
    width: 2.4rem;
    height: 2.4rem;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 50%;
    background: rgba(10, 11, 16, 0.7);
    color: #e6e8ee;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

.tb-stage:fullscreen .tb-exit-fullscreen {
    display: flex;
}

.tb-stage:-webkit-full-screen .tb-exit-fullscreen {
    display: flex;
}

.tb-exit-fullscreen:hover {
    border-color: orange;
    color: orange;
}

.tb-overlay {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(10, 11, 16, 0.78);
    backdrop-filter: blur(3px);
    z-index: 3;
    /* Let taps fall through to the canvas so "tap to launch" works while this is up;
       only the button itself needs to catch them. */
    pointer-events: none;
}

.tb-overlay-visible {
    display: flex;
}

.tb-overlay-card {
    text-align: center;
    max-width: 32em;
}

.tb-overlay-title {
    color: orange;
    margin-bottom: 0.5rem;
}

.tb-overlay-text {
    color: #d7dae2;
    margin-bottom: 0.75rem;
}

.tb-overlay-note {
    color: #9aa0ad;
    font-size: 0.85rem;
    margin: 0.5rem 0 0 0;
}

.tb-overlay-btn {
    margin: 0.5rem auto 0 auto;
    pointer-events: auto;
}

.tb-tilt-preview {
    margin: 0.75rem auto 0.25rem auto;
    max-width: 20em;
}

.tb-tilt-track {
    position: relative;
    height: 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    overflow: hidden;
}

.tb-tilt-marker {
    position: absolute;
    left: calc(50% - 12px);
    top: 0;
    width: 24px;
    height: 100%;
    border-radius: 999px;
    background: orange;
    transition: transform 60ms linear;
}

.tb-tilt-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #9aa0ad;
}

.tb-rotate-nag {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: rgba(10, 11, 16, 0.92);
    color: #d7dae2;
    text-align: center;
    padding: 1rem;
    z-index: 4;
}

.tb-rotate-icon {
    font-size: 2.5rem;
    color: orange;
}

.tb-footnote {
    color: #8a8f9c;
    font-size: 0.85rem;
    text-align: center;
    margin: 0.75rem auto 0 auto;
    max-width: 42em;
}

.tb-formula {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    text-align: center;
    color: orange;
    margin: 0.75rem 0;
}

@media (max-width: 600px) {
    .tb-hud {
        gap: 1rem;
    }

    .tb-hud-actions {
        width: 100%;
        margin-left: 0;
        justify-content: center;
    }
}