/* ===== v2026 · invader protocol — in-scene 3D game HUD + game-over panel ===== */
.invader-hud {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 30;
    display: flex;
    gap: 24px;
    padding: 10px 20px;
    background: rgba(6, 10, 22, 0.72);
    border: 1px solid rgba(111, 214, 255, 0.22);
    border-radius: 10px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    pointer-events: none;
    font: 12px/1 'JetBrains Mono', monospace;
    box-shadow:
        0 12px 28px rgba(0, 0, 0, 0.45),
        0 0 24px rgba(111, 214, 255, 0.12);
}
.invader-hud .ih-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.invader-hud .ih-k {
    color: var(--accent, #6fd6ff);
    letter-spacing: 0.18em;
    font-size: 10px;
    opacity: 0.85;
}
.invader-hud .ih-v {
    color: var(--fg, #f1f4ff);
    font-weight: 600;
    letter-spacing: 0.05em;
    min-width: 3ch;
    text-align: right;
}

.invader-gameover {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 35;
    padding: 22px 38px;
    background: rgba(6, 10, 22, 0.85);
    border: 1px solid rgba(255, 122, 184, 0.45);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-align: center;
    pointer-events: none;
    box-shadow: 0 0 30px rgba(255, 122, 184, 0.25);
    font-family: 'JetBrains Mono', monospace;
}
.invader-gameover .ig-title {
    color: #ff7ab8;
    font-size: 24px;
    letter-spacing: 0.18em;
    text-shadow: 0 0 12px rgba(255, 122, 184, 0.6);
}
.invader-gameover .ig-sub  {
    color: #6fd6ff;
    font-size: 12px;
    margin-top: 12px;
    letter-spacing: 0.12em;
}
.invader-gameover .ig-hint {
    color: rgba(241, 244, 255, 0.55);
    font-size: 11px;
    margin-top: 6px;
}
.invader-gameover .kbd {
    display: inline-block;
    padding: 1px 6px;
    border: 1px solid rgba(111, 214, 255, 0.45);
    border-radius: 4px;
    color: #6fd6ff;
    font-weight: 600;
}

@media (max-width: 640px) {
    .invader-hud { gap: 14px; padding: 8px 12px; font-size: 11px; }
    .invader-gameover .ig-title { font-size: 20px; }
}